BackblazeB2 Class

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The BackblazeB2 class offers an easy to use interface for Backblaze's B2 Cloud Storage service.

Syntax

BackblazeB2

Remarks

The BackblazeB2 class provides an easy-to-use API for the Backblaze B2 Cloud Storage service. Capabilities include uploading and downloading files, bucket management, strong encryption support, and more.

Authentication

Authentication works by exchanging a known application key (which consists of a key Id and the key string itself) for an authorization token which is then used to authorize all further requests. The authentication process also returns information about the account, the capabilities and restrictions associated with the application key, and other details that help the class interact with the Backblaze B2 API.

To authenticate the class with the server, supply an application key using the ApplicationKeyId and ApplicationKey properties, and then call Authorize. This will populate the Account property with the aforementioned information, including the AuthToken.

Eventually, the authorization token returned during the authentication process will expire, at which point it should be exchanged for a new one by calling Authorize again.

Usage

Once authenticated, you can start interacting with the Backblaze B2 Cloud Storage service. The following list shows some of the methods used to accomplish common tasks:

Refer to the complete API, below, for more information.

Property List


The following is the full list of the properties of the class with short descriptions. Click on the links for further details.

AccountDetails about the account and restrictions associated with currently-authenticated application key.
AppKeyMarkerA marker indicating what page of application keys to return next.
AppKeysA collection of application keys.
ApplicationKeyThe application key to use for authentication.
ApplicationKeyIdThe application key Id to use for authentication.
BucketsA collection of buckets.
ContentTypeThe content type to send for a file.
DelimiterThe delimiter string to use when listing files.
EncryptionAlgorithmThe encryption algorithm.
EncryptionPasswordThe encryption password.
FileDataThe data that was downloaded, or that should be uploaded.
FileMarkerA marker indicating what page of files to return next.
FilesA collection of files.
FirewallA set of properties related to firewall access.
IdleThe current status of the class.
LocalFileThe location of the local file.
LocalHostThe name of the local host or user-assigned IP interface through which connections are initiated or accepted.
MetadataA collection of metadata items.
OtherHeadersOther headers as determined by the user (optional).
OverwriteDetermines if local files are overwritten.
ParsedHeadersThis property includes a collection of headers returned from the last request.
PartMarkerA marker indicating what page of parts to return next.
PartsA collection of multipart upload parts.
PrefixA prefix used to restrict the results returned when listing files.
ProxyA set of properties related to proxy access.
QueryParamsAdditional query parameters to be included in the request.
RangeThe range of bytes to request.
SSLAcceptServerCertInstructs the class to unconditionally accept the server certificate that matches the supplied certificate.
SSLCertThe certificate to be used during Secure Sockets Layer (SSL) negotiation.
SSLProviderThe Secure Sockets Layer/Transport Layer Security (SSL/TLS) implementation to use.
SSLServerCertThe server certificate for the last established connection.
StartByteThe byte offset from which to resume the upload or download.
TimeoutThe timeout for the class.
VersionMarkerA marker indicating what page of file versions to return next.

Method List


The following is the full list of the methods of the class with short descriptions. Click on the links for further details.

AbortMultipartUploadAborts a multipart upload.
AddMetadataAdds a metadata item to the Metadata properties.
AddQueryParamAdds a query parameter to the QueryParams properties.
AuthorizeAuthenticates the class with the server using the current application key and Id.
CompleteMultipartUploadCompletes a multipart upload by assembling the previously uploaded parts.
ConfigSets or retrieves a configuration setting.
CopyFileCopies a file.
CopyPartCopies the specified file as part of a multipart upload.
CreateAppKeyCreates a new application key.
CreateBucketCreates a new bucket.
DeleteAppKeyDeletes an application key.
DeleteBucketDeletes a bucket.
DeleteFileDeletes all versions of a file.
DeleteFileVersionDeletes a file version.
DownloadFileDownloads a file by name.
DownloadFileByIdDownloads a file by Id.
GetBucketInfoGets a bucket's information and metadata.
GetDownloadAuthTokenCreate a download authorization token for one or more files in a bucket.
GetFileInfoGets a file's information and metadata.
HideFileHides a file.
InterruptThis method interrupts the current method.
ListAppKeysLists the account's application keys.
ListBucketsLists all buckets in the account.
ListFilesLists the files in a bucket.
ListFileVersionsLists the file versions in a bucket.
ListMultipartUploadsLists the in-progress multipart uploads in a bucket.
ListPartsLists a multipart upload's parts.
ResetResets the class to its initial state.
SendCustomRequestSends a custom request to the Backblaze B2 API.
SetDownloadStreamSets the stream to which downloaded data will be written.
SetUploadStreamSets the stream from which data is read when uploading.
StartMultipartUploadStarts a new multipart upload.
UpdateBucketUpdates a bucket's kind and/or metadata.
UploadFileUploads a file.
UploadPartUploads a multipart upload part.

Event List


The following is the full list of the events fired by the class with short descriptions. Click on the links for further details.

AppKeyListFires once for each application key returned when listing application keys.
BucketListFires once for each bucket returned when listing buckets.
EndTransferThis event fires when a document finishes transferring.
ErrorFired when information is available about errors during data delivery.
FileListFires once for each file returned when listing files.
FragmentCompleteFires after each part in an automatic multipart upload is complete.
HeaderFired every time a header line comes in.
LogFired once for each log message.
MetadataListFires once for each metadata item returned when bucket or file information and metadata is retrieved.
PartListFires once for each part returned when listing a multipart upload's parts.
ProgressFires during an upload or download to indicate transfer progress.
SSLServerAuthenticationFired after the server presents its certificate to the client.
SSLStatusFired when secure connection progress messages are available.
StartTransferThis event fires when a document starts transferring (after the headers).
TransferFired while a document transfers (delivers document).

Config Settings


The following is a list of config settings for the class with short descriptions. Click on the links for further details.

AccumulatePagesWhether the class should accumulate subsequent pages of results when listing them.
APIURLThe base URL used for all except download and upload requests.
APIVersionThe Backblaze B2 REST API version being used by the class.
ClientModifiedTimeThe client-side last modified time.
DownloadAuthTokenThe download authorization token to use.
DownloadTempFileThe temporary file used when downloading encrypted data.
DownloadURLThe base URL used for download requests.
EncryptionIVThe initialization vector to be used for encryption/decryption.
EncryptionKeyThe key to use during encryption/decryption.
EncryptionPasswordKDFThe KDF algorithm to use during password based encryption and decryption.
FragmentSizeThe part size to use when uploading a new file.
IfRevisionThe revision number that the bucket must currently have in order for a request to succeed.
ListWithMetadataWhether to include metadata items when listing buckets, files, etc.
MaxAppKeyResultsThe maximum number of results to return when listing application keys.
MaxPartResultsThe maximum number of results to return when listing parts.
MaxResultsThe maximum number of results to return when listing files or file versions.
ProgressAbsoluteWhether the class should track transfer progress absolutely.
ProgressStepHow often the progress event should be fired, in terms of percentage.
RawRequestReturns the data that was sent to the server.
RawResponseReturns the data that was received from the server.
ResumableUploadStateTracks upload state information during an automatic multipart upload.
SendMetadataOnCopyWhether to send metadata items when copying files.
SimpleUploadLimitThe maximum data size the class should attempt to upload directly when creating a file.
TempPathThe path to the directory where temporary files are created.
XChildCountThe number of child elements of the current element.
XChildName[i]The name of the child element.
XChildXText[i]The inner text of the child element.
XElementThe name of the current element.
XParentThe parent of the current element.
XPathProvides a way to point to a specific element in the returned XML or JSON response.
XSubTreeA snapshot of the current element in the document.
XTextThe text of the current element.
AcceptEncodingUsed to tell the server which types of content encodings the client supports.
AllowHTTPCompressionThis property enables HTTP compression for receiving data.
AllowHTTPFallbackWhether HTTP/2 connections are permitted to fallback to HTTP/1.1.
AppendWhether to append data to LocalFile.
AuthorizationThe Authorization string to be sent to the server.
BytesTransferredContains the number of bytes transferred in the response data.
ChunkSizeSpecifies the chunk size in bytes when using chunked encoding.
CompressHTTPRequestSet to true to compress the body of a PUT or POST request.
EncodeURLIf set to True the URL will be encoded by the class.
FollowRedirectsDetermines what happens when the server issues a redirect.
GetOn302RedirectIf set to True the class will perform a GET on the new location.
HTTP2HeadersWithoutIndexingHTTP2 headers that should not update the dynamic header table with incremental indexing.
HTTPVersionThe version of HTTP used by the class.
IfModifiedSinceA date determining the maximum age of the desired document.
KeepAliveDetermines whether the HTTP connection is closed after completion of the request.
KerberosSPNThe Service Principal Name for the Kerberos Domain Controller.
LogLevelThe level of detail that is logged.
MaxRedirectAttemptsLimits the number of redirects that are followed in a request.
NegotiatedHTTPVersionThe negotiated HTTP version.
OtherHeadersOther headers as determined by the user (optional).
ProxyAuthorizationThe authorization string to be sent to the proxy server.
ProxyAuthSchemeThe authorization scheme to be used for the proxy.
ProxyPasswordA password if authentication is to be used for the proxy.
ProxyPortPort for the proxy server (default 80).
ProxyServerName or IP address of a proxy server (optional).
ProxyUserA user name if authentication is to be used for the proxy.
SentHeadersThe full set of headers as sent by the client.
StatusCodeThe status code of the last response from the server.
StatusLineThe first line of the last response from the server.
TransferredDataThe contents of the last response from the server.
TransferredDataLimitThe maximum number of incoming bytes to be stored by the class.
TransferredHeadersThe full set of headers as received from the server.
TransferredRequestThe full request as sent by the client.
UseChunkedEncodingEnables or Disables HTTP chunked encoding for transfers.
UseIDNsWhether to encode hostnames to internationalized domain names.
UsePlatformHTTPClientWhether or not to use the platform HTTP client.
UseProxyAutoConfigURLWhether to use a Proxy auto-config file when attempting a connection.
UserAgentInformation about the user agent (browser).
ConnectionTimeoutSets a separate timeout value for establishing a connection.
FirewallAutoDetectTells the class whether or not to automatically detect and use firewall system settings, if available.
FirewallHostName or IP address of firewall (optional).
FirewallPasswordPassword to be used if authentication is to be used when connecting through the firewall.
FirewallPortThe TCP port for the FirewallHost;.
FirewallTypeDetermines the type of firewall to connect through.
FirewallUserA user name if authentication is to be used connecting through a firewall.
KeepAliveIntervalThe retry interval, in milliseconds, to be used when a TCP keep-alive packet is sent and no response is received.
KeepAliveRetryCountThe number of keep-alive packets to be sent before the remotehost is considered disconnected.
KeepAliveTimeThe inactivity time in milliseconds before a TCP keep-alive packet is sent.
LingerWhen set to True, connections are terminated gracefully.
LingerTimeTime in seconds to have the connection linger.
LocalHostThe name of the local host through which connections are initiated or accepted.
LocalPortThe port in the local host where the class binds.
MaxLineLengthThe maximum amount of data to accumulate when no EOL is found.
MaxTransferRateThe transfer rate limit in bytes per second.
ProxyExceptionsListA semicolon separated list of hosts and IPs to bypass when using a proxy.
TCPKeepAliveDetermines whether or not the keep alive socket option is enabled.
TcpNoDelayWhether or not to delay when sending packets.
UseIPv6Whether to use IPv6.
LogSSLPacketsControls whether SSL packets are logged when using the internal security API.
OpenSSLCADirThe path to a directory containing CA certificates.
OpenSSLCAFileName of the file containing the list of CA's trusted by your application.
OpenSSLCipherListA string that controls the ciphers to be used by SSL.
OpenSSLPrngSeedDataThe data to seed the pseudo random number generator (PRNG).
ReuseSSLSessionDetermines if the SSL session is reused.
SSLCACertFilePathsThe paths to CA certificate files on Unix/Linux.
SSLCACertsA newline separated list of CA certificates to be included when performing an SSL handshake.
SSLCipherStrengthThe minimum cipher strength used for bulk encryption.
SSLClientCACertsA newline separated list of CA certificates to use during SSL client certificate validation.
SSLEnabledCipherSuitesThe cipher suite to be used in an SSL negotiation.
SSLEnabledProtocolsUsed to enable/disable the supported security protocols.
SSLEnableRenegotiationWhether the renegotiation_info SSL extension is supported.
SSLIncludeCertChainWhether the entire certificate chain is included in the SSLServerAuthentication event.
SSLKeyLogFileThe location of a file where per-session secrets are written for debugging purposes.
SSLNegotiatedCipherReturns the negotiated cipher suite.
SSLNegotiatedCipherStrengthReturns the negotiated cipher suite strength.
SSLNegotiatedCipherSuiteReturns the negotiated cipher suite.
SSLNegotiatedKeyExchangeReturns the negotiated key exchange algorithm.
SSLNegotiatedKeyExchangeStrengthReturns the negotiated key exchange algorithm strength.
SSLNegotiatedVersionReturns the negotiated protocol version.
SSLSecurityFlagsFlags that control certificate verification.
SSLServerCACertsA newline separated list of CA certificates to use during SSL server certificate validation.
TLS12SignatureAlgorithmsDefines the allowed TLS 1.2 signature algorithms when SSLProvider is set to Internal.
TLS12SupportedGroupsThe supported groups for ECC.
TLS13KeyShareGroupsThe groups for which to pregenerate key shares.
TLS13SignatureAlgorithmsThe allowed certificate signature algorithms.
TLS13SupportedGroupsThe supported groups for (EC)DHE key exchange.
AbsoluteTimeoutDetermines whether timeouts are inactivity timeouts or absolute timeouts.
FirewallDataUsed to send extra data to the firewall.
InBufferSizeThe size in bytes of the incoming queue of the socket.
OutBufferSizeThe size in bytes of the outgoing queue of the socket.
BuildInfoInformation about the product's build.
CodePageThe system code page used for Unicode to Multibyte translations.
LicenseInfoInformation about the current license.
MaskSensitiveDataWhether sensitive data is masked in log messages.
ProcessIdleEventsWhether the class uses its internal event loop to process events when the main thread is idle.
SelectWaitMillisThe length of time in milliseconds the class will wait when DoEvents is called if there are no events to process.
UseFIPSCompliantAPITells the class whether or not to use FIPS certified APIs.
UseInternalSecurityAPIWhether or not to use the system security libraries or an internal implementation.

Account Property (BackblazeB2 Class)

Details about the account and restrictions associated with currently-authenticated application key.

Syntax

CloudStorageB2Account* GetAccount();

char* cloudstorage_backblazeb2_getaccountid(void* lpObj);
char* cloudstorage_backblazeb2_getaccountallowedbucketid(void* lpObj);
char* cloudstorage_backblazeb2_getaccountallowedbucketname(void* lpObj);
char* cloudstorage_backblazeb2_getaccountallowedprefix(void* lpObj);
char* cloudstorage_backblazeb2_getaccountauthtoken(void* lpObj);
char* cloudstorage_backblazeb2_getaccountcapabilities(void* lpObj);
int64 cloudstorage_backblazeb2_getaccountminpartsize(void* lpObj);
int64 cloudstorage_backblazeb2_getaccountrecpartsize(void* lpObj);
QString GetAccountId();

QString GetAccountAllowedBucketId();

QString GetAccountAllowedBucketName();

QString GetAccountAllowedPrefix();

QString GetAccountAuthToken();

QString GetAccountCapabilities();

qint64 GetAccountMinPartSize();

qint64 GetAccountRecPartSize();

Remarks

This property holds an B2Account object with information about the account and restrictions associated with the currently-authenticated application key; it's populated after calling Authorize.

This property is read-only and not available at design time.

Data Type

CloudStorageB2Account

AppKeyMarker Property (BackblazeB2 Class)

A marker indicating what page of application keys to return next.

Syntax

ANSI (Cross Platform)
char* GetAppKeyMarker();
int SetAppKeyMarker(const char* lpszAppKeyMarker); Unicode (Windows) LPWSTR GetAppKeyMarker();
INT SetAppKeyMarker(LPCWSTR lpszAppKeyMarker);
char* cloudstorage_backblazeb2_getappkeymarker(void* lpObj);
int cloudstorage_backblazeb2_setappkeymarker(void* lpObj, const char* lpszAppKeyMarker);
QString GetAppKeyMarker();
int SetAppKeyMarker(QString qsAppKeyMarker);

Default Value

""

Remarks

This property will be populated when ListAppKeys is called if the results are paged and there are more pages. To list all application keys, continue to call ListAppKeys until this property returns empty string.

Refer to ListAppKeys for more information.

This property is not available at design time.

Data Type

String

AppKeys Property (BackblazeB2 Class)

A collection of application keys.

Syntax

int cloudstorage_backblazeb2_getappkeycount(void* lpObj);
char* cloudstorage_backblazeb2_getappkeyallowedbucketid(void* lpObj, int appkeyindex);
char* cloudstorage_backblazeb2_getappkeyallowedprefix(void* lpObj, int appkeyindex);
char* cloudstorage_backblazeb2_getappkeycapabilities(void* lpObj, int appkeyindex);
int64 cloudstorage_backblazeb2_getappkeyexpirationtime(void* lpObj, int appkeyindex);
char* cloudstorage_backblazeb2_getappkeyid(void* lpObj, int appkeyindex);
char* cloudstorage_backblazeb2_getappkeyname(void* lpObj, int appkeyindex);
int GetAppKeyCount();

QString GetAppKeyAllowedBucketId(int iAppKeyIndex);

QString GetAppKeyAllowedPrefix(int iAppKeyIndex);

QString GetAppKeyCapabilities(int iAppKeyIndex);

qint64 GetAppKeyExpirationTime(int iAppKeyIndex);

QString GetAppKeyId(int iAppKeyIndex);

QString GetAppKeyName(int iAppKeyIndex);

Remarks

This collection holds a list of B2AppKey items.

Calling ListAppKeys will populate this collection.

This property is read-only and not available at design time.

Data Type

CloudStorageB2AppKey

ApplicationKey Property (BackblazeB2 Class)

The application key to use for authentication.

Syntax

ANSI (Cross Platform)
char* GetApplicationKey();
int SetApplicationKey(const char* lpszApplicationKey); Unicode (Windows) LPWSTR GetApplicationKey();
INT SetApplicationKey(LPCWSTR lpszApplicationKey);
char* cloudstorage_backblazeb2_getapplicationkey(void* lpObj);
int cloudstorage_backblazeb2_setapplicationkey(void* lpObj, const char* lpszApplicationKey);
QString GetApplicationKey();
int SetApplicationKey(QString qsApplicationKey);

Default Value

""

Remarks

This property specifies the application key that should be used for authentication. Both this property and ApplicationKeyId must be set before attempting any operations which connect to the server.

Data Type

String

ApplicationKeyId Property (BackblazeB2 Class)

The application key Id to use for authentication.

Syntax

ANSI (Cross Platform)
char* GetApplicationKeyId();
int SetApplicationKeyId(const char* lpszApplicationKeyId); Unicode (Windows) LPWSTR GetApplicationKeyId();
INT SetApplicationKeyId(LPCWSTR lpszApplicationKeyId);
char* cloudstorage_backblazeb2_getapplicationkeyid(void* lpObj);
int cloudstorage_backblazeb2_setapplicationkeyid(void* lpObj, const char* lpszApplicationKeyId);
QString GetApplicationKeyId();
int SetApplicationKeyId(QString qsApplicationKeyId);

Default Value

""

Remarks

This property specifies the application key Id that should be used for authentication. Both this property and ApplicationKey must be set before attempting any operations which connect to the server.

Data Type

String

Buckets Property (BackblazeB2 Class)

A collection of buckets.

Syntax

int cloudstorage_backblazeb2_getbucketcount(void* lpObj);
char* cloudstorage_backblazeb2_getbucketid(void* lpObj, int bucketindex);
char* cloudstorage_backblazeb2_getbucketkind(void* lpObj, int bucketindex);
char* cloudstorage_backblazeb2_getbucketname(void* lpObj, int bucketindex);
int64 cloudstorage_backblazeb2_getbucketrevision(void* lpObj, int bucketindex);
int GetBucketCount();

QString GetBucketId(int iBucketIndex);

QString GetBucketKind(int iBucketIndex);

QString GetBucketName(int iBucketIndex);

qint64 GetBucketRevision(int iBucketIndex);

Remarks

This collection holds a list of B2Bucket items.

Calling ListBuckets will populate this collection.

This property is read-only and not available at design time.

Data Type

CloudStorageB2Bucket

ContentType Property (BackblazeB2 Class)

The content type to send for a file.

Syntax

ANSI (Cross Platform)
char* GetContentType();
int SetContentType(const char* lpszContentType); Unicode (Windows) LPWSTR GetContentType();
INT SetContentType(LPCWSTR lpszContentType);
char* cloudstorage_backblazeb2_getcontenttype(void* lpObj);
int cloudstorage_backblazeb2_setcontenttype(void* lpObj, const char* lpszContentType);
QString GetContentType();
int SetContentType(QString qsContentType);

Default Value

""

Remarks

This property can be set before calling UploadFile, StartMultipartUpload, or (if the SendMetadataOnCopy configuration setting is enabled) CopyFile to have its value submitted as the file's Content-Type header value.

If this property is empty, the class will send b2/x-auto, which instructs the server to automatically determine the content type based on the file's extension (or set it to application/octet-stream if it cannot).

This property is not available at design time.

Data Type

String

Delimiter Property (BackblazeB2 Class)

The delimiter string to use when listing files.

Syntax

ANSI (Cross Platform)
char* GetDelimiter();
int SetDelimiter(const char* lpszDelimiter); Unicode (Windows) LPWSTR GetDelimiter();
INT SetDelimiter(LPCWSTR lpszDelimiter);
char* cloudstorage_backblazeb2_getdelimiter(void* lpObj);
int cloudstorage_backblazeb2_setdelimiter(void* lpObj, const char* lpszDelimiter);
QString GetDelimiter();
int SetDelimiter(QString qsDelimiter);

Default Value

""

Remarks

If this property is non-empty when ListFiles or ListFileVersions is called, any items whose names contain the same string between the specified Prefix and the first occurrence of the specified delimiter that follow will be rolled up into a virtual "folder" element, which is returned in place of the individual files themselves.

If a particular item is a "folder" instead of an actual file or file version, then the Kind field will be set to folder. The same is also true of the FileList event's Kind parameter.

File Hierarchy Traversal

By using the Delimiter and Prefix properties in tandem, applications can effectively "traverse" a virtual hierarchy of files (or file versions) as if it were a filesystem. For example, assume that files with the following names exist within a bucket:

  • MyCompany
  • MyCompany/Department1
  • MyCompany/Department2
  • MyCompany/Department2/EmployeeA
  • MyCompany/Department2/EmployeeB

With Delimiter set to /, we can set Prefix to successively "deeper" values before calling ListFiles or ListFileVersions for the following effect:

Prefix Value Files Returned Folders Returned
(empty) MyCompany MyCompany/
MyCompany/ MyCompany/Department1

MyCompany/Department2

MyCompany/Department2/
MyCompany/Department2/ MyCompany/Department2/EmployeeA

MyCompany/Department2/EmployeeB

(none)

This property is not available at design time.

Data Type

String

EncryptionAlgorithm Property (BackblazeB2 Class)

The encryption algorithm.

Syntax

ANSI (Cross Platform)
int GetEncryptionAlgorithm();
int SetEncryptionAlgorithm(int iEncryptionAlgorithm); Unicode (Windows) INT GetEncryptionAlgorithm();
INT SetEncryptionAlgorithm(INT iEncryptionAlgorithm);

Possible Values

EA_AES(0), 
EA_BLOWFISH(1),
EA_CAST(2),
EA_DES(3),
EA_IDEA(4),
EA_RC2(5),
EA_RC4(6),
EA_TEA(7),
EA_TRIPLE_DES(8),
EA_TWOFISH(9),
EA_RIJNDAEL(10),
EA_CHA_CHA(11),
EA_XSALSA_20(12)
int cloudstorage_backblazeb2_getencryptionalgorithm(void* lpObj);
int cloudstorage_backblazeb2_setencryptionalgorithm(void* lpObj, int iEncryptionAlgorithm);
int GetEncryptionAlgorithm();
int SetEncryptionAlgorithm(int iEncryptionAlgorithm);

Default Value

0

Remarks

This property specifies the encryption algorithm to be used. The maximum allowable key size is automatically used for the selected algorithm. Possible values are:

Algorithm Key Size
0 (eaAES - default) 256
1 (eaBlowfish) 448
2 (eaCAST) 128
3 (eaDES) 64
4 (eaIDEA) 128
5 (eaRC2) 128
6 (eaRC4) 2048
7 (eaTEA) 128
8 (eaTripleDES) 192
9 (eaTwofish) 256
10 (eaRijndael) 256
11 (eaChaCha) 256
12 (eaXSalsa20) 256

Data Type

Integer

EncryptionPassword Property (BackblazeB2 Class)

The encryption password.

Syntax

ANSI (Cross Platform)
char* GetEncryptionPassword();
int SetEncryptionPassword(const char* lpszEncryptionPassword); Unicode (Windows) LPWSTR GetEncryptionPassword();
INT SetEncryptionPassword(LPCWSTR lpszEncryptionPassword);
char* cloudstorage_backblazeb2_getencryptionpassword(void* lpObj);
int cloudstorage_backblazeb2_setencryptionpassword(void* lpObj, const char* lpszEncryptionPassword);
QString GetEncryptionPassword();
int SetEncryptionPassword(QString qsEncryptionPassword);

Default Value

""

Remarks

If this property is populated when UploadFile or DownloadFile is called, the class will attempt to encrypt or decrypt the data before uploading or after downloading it.

The class uses the value specified here to generate the necessary encryption Key and IV values using the PKCS5 password digest algorithm. This provides a simpler alternative to creating and managing Key and IV values directly.

However, it is also possible to explicitly specify the Key and IV values to use by setting the EncryptionKey and EncryptionIV configuration settings. This may be necessary if, e.g., the data needs to be encrypted/decrypted by another utility which generates Key and IV values differently.

This property is not available at design time.

Data Type

String

FileData Property (BackblazeB2 Class)

The data that was downloaded, or that should be uploaded.

Syntax

ANSI (Cross Platform)
int GetFileData(char* &lpFileData, int &lenFileData);
int SetFileData(const char* lpFileData, int lenFileData); Unicode (Windows) INT GetFileData(LPSTR &lpFileData, INT &lenFileData);
INT SetFileData(LPCSTR lpFileData, INT lenFileData);
int cloudstorage_backblazeb2_getfiledata(void* lpObj, char** lpFileData, int* lenFileData);
int cloudstorage_backblazeb2_setfiledata(void* lpObj, const char* lpFileData, int lenFileData);
QByteArray GetFileData();
int SetFileData(QByteArray qbaFileData);

Default Value

""

Remarks

This property is populated with file data after calling DownloadFile or DownloadFileById if SetDownloadStream and LocalFile are not set.

This property can also be set before calling UploadFile or UploadPart; its data will be uploaded if SetUploadStream and LocalFile are not set.

This property is not available at design time.

Data Type

Binary String

FileMarker Property (BackblazeB2 Class)

A marker indicating what page of files to return next.

Syntax

ANSI (Cross Platform)
char* GetFileMarker();
int SetFileMarker(const char* lpszFileMarker); Unicode (Windows) LPWSTR GetFileMarker();
INT SetFileMarker(LPCWSTR lpszFileMarker);
char* cloudstorage_backblazeb2_getfilemarker(void* lpObj);
int cloudstorage_backblazeb2_setfilemarker(void* lpObj, const char* lpszFileMarker);
QString GetFileMarker();
int SetFileMarker(QString qsFileMarker);

Default Value

""

Remarks

This property will be populated when ListFiles or ListMultipartUploads is called if the results are paged and there are more pages. To list all files or multipart uploads, continue to call ListFiles or ListMultipartUploads (respectively) until this property returns empty string.

Refer to ListFiles or ListMultipartUploads for more information.

This property is not available at design time.

Data Type

String

Files Property (BackblazeB2 Class)

A collection of files.

Syntax

int cloudstorage_backblazeb2_getfilecount(void* lpObj);
char* cloudstorage_backblazeb2_getfilebucketid(void* lpObj, int fileindex);
char* cloudstorage_backblazeb2_getfilecontenttype(void* lpObj, int fileindex);
int64 cloudstorage_backblazeb2_getfilecreatedtime(void* lpObj, int fileindex);
char* cloudstorage_backblazeb2_getfileid(void* lpObj, int fileindex);
char* cloudstorage_backblazeb2_getfilekind(void* lpObj, int fileindex);
char* cloudstorage_backblazeb2_getfilemd5hash(void* lpObj, int fileindex);
int64 cloudstorage_backblazeb2_getfilemodifiedtime(void* lpObj, int fileindex);
char* cloudstorage_backblazeb2_getfilename(void* lpObj, int fileindex);
char* cloudstorage_backblazeb2_getfilesha1hash(void* lpObj, int fileindex);
int64 cloudstorage_backblazeb2_getfilesize(void* lpObj, int fileindex);
int GetFileCount();

QString GetFileBucketId(int iFileIndex);

QString GetFileContentType(int iFileIndex);

qint64 GetFileCreatedTime(int iFileIndex);

QString GetFileId(int iFileIndex);

QString GetFileKind(int iFileIndex);

QString GetFileMD5Hash(int iFileIndex);

qint64 GetFileModifiedTime(int iFileIndex);

QString GetFileName(int iFileIndex);

QString GetFileSHA1Hash(int iFileIndex);

qint64 GetFileSize(int iFileIndex);

Remarks

This collection holds a list of B2File items.

Calling GetFileInfo, ListFiles, ListFileVersions, or ListMultipartUploads will populate this collection.

This property is read-only and not available at design time.

Data Type

CloudStorageB2File

Firewall Property (BackblazeB2 Class)

A set of properties related to firewall access.

Syntax

CloudStorageFirewall* GetFirewall();
int SetFirewall(CloudStorageFirewall* val);
int cloudstorage_backblazeb2_getfirewallautodetect(void* lpObj);
int cloudstorage_backblazeb2_setfirewallautodetect(void* lpObj, int bFirewallAutoDetect);
int cloudstorage_backblazeb2_getfirewalltype(void* lpObj);
int cloudstorage_backblazeb2_setfirewalltype(void* lpObj, int iFirewallType);
char* cloudstorage_backblazeb2_getfirewallhost(void* lpObj);
int cloudstorage_backblazeb2_setfirewallhost(void* lpObj, const char* lpszFirewallHost);
char* cloudstorage_backblazeb2_getfirewallpassword(void* lpObj);
int cloudstorage_backblazeb2_setfirewallpassword(void* lpObj, const char* lpszFirewallPassword);
int cloudstorage_backblazeb2_getfirewallport(void* lpObj);
int cloudstorage_backblazeb2_setfirewallport(void* lpObj, int iFirewallPort);
char* cloudstorage_backblazeb2_getfirewalluser(void* lpObj);
int cloudstorage_backblazeb2_setfirewalluser(void* lpObj, const char* lpszFirewallUser);
bool GetFirewallAutoDetect();
int SetFirewallAutoDetect(bool bFirewallAutoDetect); int GetFirewallType();
int SetFirewallType(int iFirewallType); QString GetFirewallHost();
int SetFirewallHost(QString qsFirewallHost); QString GetFirewallPassword();
int SetFirewallPassword(QString qsFirewallPassword); int GetFirewallPort();
int SetFirewallPort(int iFirewallPort); QString GetFirewallUser();
int SetFirewallUser(QString qsFirewallUser);

Remarks

This is a Firewall-type property, which contains fields describing the firewall through which the class will attempt to connect.

Data Type

CloudStorageFirewall

Idle Property (BackblazeB2 Class)

The current status of the class.

Syntax

ANSI (Cross Platform)
int GetIdle();

Unicode (Windows)
BOOL GetIdle();
int cloudstorage_backblazeb2_getidle(void* lpObj);
bool GetIdle();

Default Value

TRUE

Remarks

This property will be False if the component is currently busy (communicating or waiting for an answer), and True at all other times.

This property is read-only.

Data Type

Boolean

LocalFile Property (BackblazeB2 Class)

The location of the local file.

Syntax

ANSI (Cross Platform)
char* GetLocalFile();
wchar_t* GetLocalFile_W(); // Windows only
int SetLocalFile(const char* lpszLocalFile);
int SetLocalFile(const wchar_t* lpszLocalFile); // Windows only Unicode (Windows) LPWSTR GetLocalFile();
INT SetLocalFile(LPCWSTR lpszLocalFile);
char* cloudstorage_backblazeb2_getlocalfile(void* lpObj);
wchar_t* cloudstorage_backblazeb2_getlocalfile_W(void* lpObj); // Windows only
int cloudstorage_backblazeb2_setlocalfile(void* lpObj, const char* lpszLocalFile);
int cloudstorage_backblazeb2_setlocalfile(void* lpObj, const wchar_t* lpszLocalFile); // Windows only
QString GetLocalFile();
int SetLocalFile(QString qsLocalFile);

Default Value

""

Remarks

This property specifies the location of a file on disk. This is used as the source file when calling UploadFile or UploadPart; and as the destination file when calling DownloadFile or DownloadFileById.

Note: Setting this property to a non-empty value will discard any streams set using SetDownloadStream and SetUploadStream. Similarly, passing a non-null value to either of the aforementioned methods will clear this property.

Data Type

String

LocalHost Property (BackblazeB2 Class)

The name of the local host or user-assigned IP interface through which connections are initiated or accepted.

Syntax

ANSI (Cross Platform)
char* GetLocalHost();
int SetLocalHost(const char* lpszLocalHost); Unicode (Windows) LPWSTR GetLocalHost();
INT SetLocalHost(LPCWSTR lpszLocalHost);
char* cloudstorage_backblazeb2_getlocalhost(void* lpObj);
int cloudstorage_backblazeb2_setlocalhost(void* lpObj, const char* lpszLocalHost);
QString GetLocalHost();
int SetLocalHost(QString qsLocalHost);

Default Value

""

Remarks

This property contains the name of the local host as obtained by the gethostname() system call, or if the user has assigned an IP address, the value of that address.

In multihomed hosts (machines with more than one IP interface) setting LocalHost to the IP address of an interface will make the class initiate connections (or accept in the case of server classs) only through that interface. It is recommended to provide an IP address rather than a hostname when setting this property to ensure the desired interface is used.

If the class is connected, the LocalHost property shows the IP address of the interface through which the connection is made in internet dotted format (aaa.bbb.ccc.ddd). In most cases, this is the address of the local host, except for multihomed hosts (machines with more than one IP interface).

Note: LocalHost is not persistent. You must always set it in code, and never in the property window.

Data Type

String

Metadata Property (BackblazeB2 Class)

A collection of metadata items.

Syntax

int cloudstorage_backblazeb2_getmetadatacount(void* lpObj);
int cloudstorage_backblazeb2_setmetadatacount(void* lpObj, int iMetadataCount);
char* cloudstorage_backblazeb2_getmetadataname(void* lpObj, int metadataindex);
int cloudstorage_backblazeb2_setmetadataname(void* lpObj, int metadataindex, const char* lpszMetadataName);
char* cloudstorage_backblazeb2_getmetadatavalue(void* lpObj, int metadataindex);
int cloudstorage_backblazeb2_setmetadatavalue(void* lpObj, int metadataindex, const char* lpszMetadataValue);
int GetMetadataCount();
int SetMetadataCount(int iMetadataCount); QString GetMetadataName(int iMetadataIndex);
int SetMetadataName(int iMetadataIndex, QString qsMetadataName); QString GetMetadataValue(int iMetadataIndex);
int SetMetadataValue(int iMetadataIndex, QString qsMetadataValue);

Remarks

This collection holds a list of B2Metadata items.

This collection is populated when GetBucketInfo or GetFileInfo is called; and its items are used anytime one of the following methods is called:

Note that there is a limit of 10 metadata items per bucket and per file; the class does not enforce this limit, but the server will return an error if it is exceeded. For files specifically, any value set using the ClientModifiedTime configuration setting will count towards this limit; refer that setting's documentation for more information.

This property is not available at design time.

Data Type

CloudStorageB2Metadata

OtherHeaders Property (BackblazeB2 Class)

Other headers as determined by the user (optional).

Syntax

ANSI (Cross Platform)
char* GetOtherHeaders();
int SetOtherHeaders(const char* lpszOtherHeaders); Unicode (Windows) LPWSTR GetOtherHeaders();
INT SetOtherHeaders(LPCWSTR lpszOtherHeaders);
char* cloudstorage_backblazeb2_getotherheaders(void* lpObj);
int cloudstorage_backblazeb2_setotherheaders(void* lpObj, const char* lpszOtherHeaders);
QString GetOtherHeaders();
int SetOtherHeaders(QString qsOtherHeaders);

Default Value

""

Remarks

This property can be set to a string of headers to be appended to the HTTP request headers created from other properties like ContentType and From.

The headers must follow the format Header: Value as described in the HTTP specifications. Header lines should be separated by CRLF ("\r\n") .

Use this property with caution. If this property contains invalid headers, HTTP requests may fail.

This property is useful for extending the functionality of the class beyond what is provided.

This property is not available at design time.

Data Type

String

Overwrite Property (BackblazeB2 Class)

Determines if local files are overwritten.

Syntax

ANSI (Cross Platform)
int GetOverwrite();
int SetOverwrite(int bOverwrite); Unicode (Windows) BOOL GetOverwrite();
INT SetOverwrite(BOOL bOverwrite);
int cloudstorage_backblazeb2_getoverwrite(void* lpObj);
int cloudstorage_backblazeb2_setoverwrite(void* lpObj, int bOverwrite);
bool GetOverwrite();
int SetOverwrite(bool bOverwrite);

Default Value

FALSE

Remarks

This property controls whether local files are overwritten when calling DownloadFile or DownloadFileById. It is only applicable to local files.

Data Type

Boolean

ParsedHeaders Property (BackblazeB2 Class)

This property includes a collection of headers returned from the last request.

Syntax

CloudStorageList<CloudStorageHeader>* GetParsedHeaders();

int cloudstorage_backblazeb2_getparsedheadercount(void* lpObj);
char* cloudstorage_backblazeb2_getparsedheaderfield(void* lpObj, int parsedheaderindex);
char* cloudstorage_backblazeb2_getparsedheadervalue(void* lpObj, int parsedheaderindex);
int GetParsedHeaderCount();

QString GetParsedHeaderField(int iParsedHeaderIndex);

QString GetParsedHeaderValue(int iParsedHeaderIndex);

Remarks

This property contains a collection of headers returned from the last request. Whenever headers are returned from the server, the headers are parsed into a collection of headers. Each Header in this collection contains information describing that header.

MaxHeaders can be used to control the maximum number of headers saved.

This property is read-only and not available at design time.

Data Type

CloudStorageHeader

PartMarker Property (BackblazeB2 Class)

A marker indicating what page of parts to return next.

Syntax

ANSI (Cross Platform)
char* GetPartMarker();
int SetPartMarker(const char* lpszPartMarker); Unicode (Windows) LPWSTR GetPartMarker();
INT SetPartMarker(LPCWSTR lpszPartMarker);
char* cloudstorage_backblazeb2_getpartmarker(void* lpObj);
int cloudstorage_backblazeb2_setpartmarker(void* lpObj, const char* lpszPartMarker);
QString GetPartMarker();
int SetPartMarker(QString qsPartMarker);

Default Value

""

Remarks

This property will be populated when ListParts is called if the results are paged and there are more pages. To list all parts, continue to call ListParts until this property returns empty string.

Refer to ListParts for more information.

This property is not available at design time.

Data Type

String

Parts Property (BackblazeB2 Class)

A collection of multipart upload parts.

Syntax

int cloudstorage_backblazeb2_getpartcount(void* lpObj);
int64 cloudstorage_backblazeb2_getpartcreatedtime(void* lpObj, int partindex);
char* cloudstorage_backblazeb2_getpartmd5hash(void* lpObj, int partindex);
int cloudstorage_backblazeb2_getpartnumber(void* lpObj, int partindex);
char* cloudstorage_backblazeb2_getpartsha1hash(void* lpObj, int partindex);
int64 cloudstorage_backblazeb2_getpartsize(void* lpObj, int partindex);
int GetPartCount();

qint64 GetPartCreatedTime(int iPartIndex);

QString GetPartMD5Hash(int iPartIndex);

int GetPartNumber(int iPartIndex);

QString GetPartSHA1Hash(int iPartIndex);

qint64 GetPartSize(int iPartIndex);

Remarks

This collection holds a list of B2Part items.

Calling ListParts will populate this collection.

This property is read-only and not available at design time.

Data Type

CloudStorageB2Part

Prefix Property (BackblazeB2 Class)

A prefix used to restrict the results returned when listing files.

Syntax

ANSI (Cross Platform)
char* GetPrefix();
int SetPrefix(const char* lpszPrefix); Unicode (Windows) LPWSTR GetPrefix();
INT SetPrefix(LPCWSTR lpszPrefix);
char* cloudstorage_backblazeb2_getprefix(void* lpObj);
int cloudstorage_backblazeb2_setprefix(void* lpObj, const char* lpszPrefix);
QString GetPrefix();
int SetPrefix(QString qsPrefix);

Default Value

""

Remarks

This property, if non-empty, is used to restrict the values returned by ListFiles, ListFileVersions, or ListMultipartUploads to only the items whose names begin with the given prefix.

Note: If the currently-authenticated application key is restricted to a specific file name prefix (indicated by the AllowedPrefix field being non-empty), then this property will automatically be set to that prefix if it is empty when one of the aforementioned methods is called.

File Hierarchy Traversal

By using the Delimiter and Prefix properties in tandem, applications can effectively "traverse" a virtual hierarchy of files (or file versions) as if it were a filesystem. For example, assume that files with the following names exist within a bucket:

  • MyCompany
  • MyCompany/Department1
  • MyCompany/Department2
  • MyCompany/Department2/EmployeeA
  • MyCompany/Department2/EmployeeB

With Delimiter set to /, we can set Prefix to successively "deeper" values before calling ListFiles or ListFileVersions for the following effect:

Prefix Value Files Returned Folders Returned
(empty) MyCompany MyCompany/
MyCompany/ MyCompany/Department1

MyCompany/Department2

MyCompany/Department2/
MyCompany/Department2/ MyCompany/Department2/EmployeeA

MyCompany/Department2/EmployeeB

(none)

This property is not available at design time.

Data Type

String

Proxy Property (BackblazeB2 Class)

A set of properties related to proxy access.

Syntax

CloudStorageProxy* GetProxy();
int SetProxy(CloudStorageProxy* val);
int cloudstorage_backblazeb2_getproxyauthscheme(void* lpObj);
int cloudstorage_backblazeb2_setproxyauthscheme(void* lpObj, int iProxyAuthScheme);
int cloudstorage_backblazeb2_getproxyautodetect(void* lpObj);
int cloudstorage_backblazeb2_setproxyautodetect(void* lpObj, int bProxyAutoDetect);
char* cloudstorage_backblazeb2_getproxypassword(void* lpObj);
int cloudstorage_backblazeb2_setproxypassword(void* lpObj, const char* lpszProxyPassword);
int cloudstorage_backblazeb2_getproxyport(void* lpObj);
int cloudstorage_backblazeb2_setproxyport(void* lpObj, int iProxyPort);
char* cloudstorage_backblazeb2_getproxyserver(void* lpObj);
int cloudstorage_backblazeb2_setproxyserver(void* lpObj, const char* lpszProxyServer);
int cloudstorage_backblazeb2_getproxyssl(void* lpObj);
int cloudstorage_backblazeb2_setproxyssl(void* lpObj, int iProxySSL);
char* cloudstorage_backblazeb2_getproxyuser(void* lpObj);
int cloudstorage_backblazeb2_setproxyuser(void* lpObj, const char* lpszProxyUser);
int GetProxyAuthScheme();
int SetProxyAuthScheme(int iProxyAuthScheme); bool GetProxyAutoDetect();
int SetProxyAutoDetect(bool bProxyAutoDetect); QString GetProxyPassword();
int SetProxyPassword(QString qsProxyPassword); int GetProxyPort();
int SetProxyPort(int iProxyPort); QString GetProxyServer();
int SetProxyServer(QString qsProxyServer); int GetProxySSL();
int SetProxySSL(int iProxySSL); QString GetProxyUser();
int SetProxyUser(QString qsProxyUser);

Remarks

This property contains fields describing the proxy through which the class will attempt to connect.

Data Type

CloudStorageProxy

QueryParams Property (BackblazeB2 Class)

Additional query parameters to be included in the request.

Syntax

CloudStorageList<CloudStorageQueryParam>* GetQueryParams();
int SetQueryParams(CloudStorageList<CloudStorageQueryParam>* val);
int cloudstorage_backblazeb2_getqueryparamcount(void* lpObj);
int cloudstorage_backblazeb2_setqueryparamcount(void* lpObj, int iQueryParamCount);
char* cloudstorage_backblazeb2_getqueryparamname(void* lpObj, int queryparamindex);
int cloudstorage_backblazeb2_setqueryparamname(void* lpObj, int queryparamindex, const char* lpszQueryParamName);
char* cloudstorage_backblazeb2_getqueryparamvalue(void* lpObj, int queryparamindex);
int cloudstorage_backblazeb2_setqueryparamvalue(void* lpObj, int queryparamindex, const char* lpszQueryParamValue);
int GetQueryParamCount();
int SetQueryParamCount(int iQueryParamCount); QString GetQueryParamName(int iQueryParamIndex);
int SetQueryParamName(int iQueryParamIndex, QString qsQueryParamName); QString GetQueryParamValue(int iQueryParamIndex);
int SetQueryParamValue(int iQueryParamIndex, QString qsQueryParamValue);

Remarks

This is a collection of query parameters that will be added to the request. Parameters can be added via the AddQueryParam method.

Data Type

CloudStorageQueryParam

Range Property (BackblazeB2 Class)

The range of bytes to request.

Syntax

ANSI (Cross Platform)
char* GetRange();
int SetRange(const char* lpszRange); Unicode (Windows) LPWSTR GetRange();
INT SetRange(LPCWSTR lpszRange);
char* cloudstorage_backblazeb2_getrange(void* lpObj);
int cloudstorage_backblazeb2_setrange(void* lpObj, const char* lpszRange);
QString GetRange();
int SetRange(QString qsRange);

Default Value

""

Remarks

This property specifies the range of bytes to request from the server. If this property is non-empty when a DownloadFile or DownloadFileById request is being constructed, a header like Range: bytes=Range will be added to the request, with Range substituted with the specified value.

There are two valid formats for this property's value:

  • StartByte-
  • StartByte-EndByte

Note: If the StartByte property is greater than zero when one of the aforementioned methods is called (i.e., when a download is being resumed), and this property is non-empty, the class will automatically advance the StartByte value in the specified range by StartByte bytes when sending the Range header to the server. This ensures that the previously-downloaded data at the start of the specified range is not downloaded again when the download is resumed.

This property is not available at design time.

Data Type

String

SSLAcceptServerCert Property (BackblazeB2 Class)

Instructs the class to unconditionally accept the server certificate that matches the supplied certificate.

Syntax

CloudStorageCertificate* GetSSLAcceptServerCert();
int SetSSLAcceptServerCert(CloudStorageCertificate* val);
char* cloudstorage_backblazeb2_getsslacceptservercerteffectivedate(void* lpObj);
char* cloudstorage_backblazeb2_getsslacceptservercertexpirationdate(void* lpObj);
char* cloudstorage_backblazeb2_getsslacceptservercertextendedkeyusage(void* lpObj);
char* cloudstorage_backblazeb2_getsslacceptservercertfingerprint(void* lpObj);
char* cloudstorage_backblazeb2_getsslacceptservercertfingerprintsha1(void* lpObj);
char* cloudstorage_backblazeb2_getsslacceptservercertfingerprintsha256(void* lpObj);
char* cloudstorage_backblazeb2_getsslacceptservercertissuer(void* lpObj);
char* cloudstorage_backblazeb2_getsslacceptservercertprivatekey(void* lpObj);
int cloudstorage_backblazeb2_getsslacceptservercertprivatekeyavailable(void* lpObj);
char* cloudstorage_backblazeb2_getsslacceptservercertprivatekeycontainer(void* lpObj);
char* cloudstorage_backblazeb2_getsslacceptservercertpublickey(void* lpObj);
char* cloudstorage_backblazeb2_getsslacceptservercertpublickeyalgorithm(void* lpObj);
int cloudstorage_backblazeb2_getsslacceptservercertpublickeylength(void* lpObj);
char* cloudstorage_backblazeb2_getsslacceptservercertserialnumber(void* lpObj);
char* cloudstorage_backblazeb2_getsslacceptservercertsignaturealgorithm(void* lpObj);
int cloudstorage_backblazeb2_getsslacceptservercertstore(void* lpObj, char** lpSSLAcceptServerCertStore, int* lenSSLAcceptServerCertStore);
int cloudstorage_backblazeb2_setsslacceptservercertstore(void* lpObj, const char* lpSSLAcceptServerCertStore, int lenSSLAcceptServerCertStore);
char* cloudstorage_backblazeb2_getsslacceptservercertstorepassword(void* lpObj);
int cloudstorage_backblazeb2_setsslacceptservercertstorepassword(void* lpObj, const char* lpszSSLAcceptServerCertStorePassword);
int cloudstorage_backblazeb2_getsslacceptservercertstoretype(void* lpObj);
int cloudstorage_backblazeb2_setsslacceptservercertstoretype(void* lpObj, int iSSLAcceptServerCertStoreType);
char* cloudstorage_backblazeb2_getsslacceptservercertsubjectaltnames(void* lpObj);
char* cloudstorage_backblazeb2_getsslacceptservercertthumbprintmd5(void* lpObj);
char* cloudstorage_backblazeb2_getsslacceptservercertthumbprintsha1(void* lpObj);
char* cloudstorage_backblazeb2_getsslacceptservercertthumbprintsha256(void* lpObj);
char* cloudstorage_backblazeb2_getsslacceptservercertusage(void* lpObj);
int cloudstorage_backblazeb2_getsslacceptservercertusageflags(void* lpObj);
char* cloudstorage_backblazeb2_getsslacceptservercertversion(void* lpObj);
char* cloudstorage_backblazeb2_getsslacceptservercertsubject(void* lpObj);
int cloudstorage_backblazeb2_setsslacceptservercertsubject(void* lpObj, const char* lpszSSLAcceptServerCertSubject);
int cloudstorage_backblazeb2_getsslacceptservercertencoded(void* lpObj, char** lpSSLAcceptServerCertEncoded, int* lenSSLAcceptServerCertEncoded);
int cloudstorage_backblazeb2_setsslacceptservercertencoded(void* lpObj, const char* lpSSLAcceptServerCertEncoded, int lenSSLAcceptServerCertEncoded);
QString GetSSLAcceptServerCertEffectiveDate();

QString GetSSLAcceptServerCertExpirationDate();

QString GetSSLAcceptServerCertExtendedKeyUsage();

QString GetSSLAcceptServerCertFingerprint();

QString GetSSLAcceptServerCertFingerprintSHA1();

QString GetSSLAcceptServerCertFingerprintSHA256();

QString GetSSLAcceptServerCertIssuer();

QString GetSSLAcceptServerCertPrivateKey();

bool GetSSLAcceptServerCertPrivateKeyAvailable();

QString GetSSLAcceptServerCertPrivateKeyContainer();

QString GetSSLAcceptServerCertPublicKey();

QString GetSSLAcceptServerCertPublicKeyAlgorithm();

int GetSSLAcceptServerCertPublicKeyLength();

QString GetSSLAcceptServerCertSerialNumber();

QString GetSSLAcceptServerCertSignatureAlgorithm();

QByteArray GetSSLAcceptServerCertStore();
int SetSSLAcceptServerCertStore(QByteArray qbaSSLAcceptServerCertStore); QString GetSSLAcceptServerCertStorePassword();
int SetSSLAcceptServerCertStorePassword(QString qsSSLAcceptServerCertStorePassword); int GetSSLAcceptServerCertStoreType();
int SetSSLAcceptServerCertStoreType(int iSSLAcceptServerCertStoreType); QString GetSSLAcceptServerCertSubjectAltNames(); QString GetSSLAcceptServerCertThumbprintMD5(); QString GetSSLAcceptServerCertThumbprintSHA1(); QString GetSSLAcceptServerCertThumbprintSHA256(); QString GetSSLAcceptServerCertUsage(); int GetSSLAcceptServerCertUsageFlags(); QString GetSSLAcceptServerCertVersion(); QString GetSSLAcceptServerCertSubject();
int SetSSLAcceptServerCertSubject(QString qsSSLAcceptServerCertSubject); QByteArray GetSSLAcceptServerCertEncoded();
int SetSSLAcceptServerCertEncoded(QByteArray qbaSSLAcceptServerCertEncoded);

Remarks

If it finds any issues with the certificate presented by the server, the class will normally terminate the connection with an error.

You may override this behavior by supplying a value for SSLAcceptServerCert. If the certificate supplied in SSLAcceptServerCert is the same as the certificate presented by the server, then the server certificate is accepted unconditionally, and the connection will continue normally.

Note: This functionality is provided only for cases in which you otherwise know that you are communicating with the right server. If used improperly, this property may create a security breach. Use it at your own risk.

Data Type

CloudStorageCertificate

SSLCert Property (BackblazeB2 Class)

The certificate to be used during Secure Sockets Layer (SSL) negotiation.

Syntax

CloudStorageCertificate* GetSSLCert();
int SetSSLCert(CloudStorageCertificate* val);
char* cloudstorage_backblazeb2_getsslcerteffectivedate(void* lpObj);
char* cloudstorage_backblazeb2_getsslcertexpirationdate(void* lpObj);
char* cloudstorage_backblazeb2_getsslcertextendedkeyusage(void* lpObj);
char* cloudstorage_backblazeb2_getsslcertfingerprint(void* lpObj);
char* cloudstorage_backblazeb2_getsslcertfingerprintsha1(void* lpObj);
char* cloudstorage_backblazeb2_getsslcertfingerprintsha256(void* lpObj);
char* cloudstorage_backblazeb2_getsslcertissuer(void* lpObj);
char* cloudstorage_backblazeb2_getsslcertprivatekey(void* lpObj);
int cloudstorage_backblazeb2_getsslcertprivatekeyavailable(void* lpObj);
char* cloudstorage_backblazeb2_getsslcertprivatekeycontainer(void* lpObj);
char* cloudstorage_backblazeb2_getsslcertpublickey(void* lpObj);
char* cloudstorage_backblazeb2_getsslcertpublickeyalgorithm(void* lpObj);
int cloudstorage_backblazeb2_getsslcertpublickeylength(void* lpObj);
char* cloudstorage_backblazeb2_getsslcertserialnumber(void* lpObj);
char* cloudstorage_backblazeb2_getsslcertsignaturealgorithm(void* lpObj);
int cloudstorage_backblazeb2_getsslcertstore(void* lpObj, char** lpSSLCertStore, int* lenSSLCertStore);
int cloudstorage_backblazeb2_setsslcertstore(void* lpObj, const char* lpSSLCertStore, int lenSSLCertStore);
char* cloudstorage_backblazeb2_getsslcertstorepassword(void* lpObj);
int cloudstorage_backblazeb2_setsslcertstorepassword(void* lpObj, const char* lpszSSLCertStorePassword);
int cloudstorage_backblazeb2_getsslcertstoretype(void* lpObj);
int cloudstorage_backblazeb2_setsslcertstoretype(void* lpObj, int iSSLCertStoreType);
char* cloudstorage_backblazeb2_getsslcertsubjectaltnames(void* lpObj);
char* cloudstorage_backblazeb2_getsslcertthumbprintmd5(void* lpObj);
char* cloudstorage_backblazeb2_getsslcertthumbprintsha1(void* lpObj);
char* cloudstorage_backblazeb2_getsslcertthumbprintsha256(void* lpObj);
char* cloudstorage_backblazeb2_getsslcertusage(void* lpObj);
int cloudstorage_backblazeb2_getsslcertusageflags(void* lpObj);
char* cloudstorage_backblazeb2_getsslcertversion(void* lpObj);
char* cloudstorage_backblazeb2_getsslcertsubject(void* lpObj);
int cloudstorage_backblazeb2_setsslcertsubject(void* lpObj, const char* lpszSSLCertSubject);
int cloudstorage_backblazeb2_getsslcertencoded(void* lpObj, char** lpSSLCertEncoded, int* lenSSLCertEncoded);
int cloudstorage_backblazeb2_setsslcertencoded(void* lpObj, const char* lpSSLCertEncoded, int lenSSLCertEncoded);
QString GetSSLCertEffectiveDate();

QString GetSSLCertExpirationDate();

QString GetSSLCertExtendedKeyUsage();

QString GetSSLCertFingerprint();

QString GetSSLCertFingerprintSHA1();

QString GetSSLCertFingerprintSHA256();

QString GetSSLCertIssuer();

QString GetSSLCertPrivateKey();

bool GetSSLCertPrivateKeyAvailable();

QString GetSSLCertPrivateKeyContainer();

QString GetSSLCertPublicKey();

QString GetSSLCertPublicKeyAlgorithm();

int GetSSLCertPublicKeyLength();

QString GetSSLCertSerialNumber();

QString GetSSLCertSignatureAlgorithm();

QByteArray GetSSLCertStore();
int SetSSLCertStore(QByteArray qbaSSLCertStore); QString GetSSLCertStorePassword();
int SetSSLCertStorePassword(QString qsSSLCertStorePassword); int GetSSLCertStoreType();
int SetSSLCertStoreType(int iSSLCertStoreType); QString GetSSLCertSubjectAltNames(); QString GetSSLCertThumbprintMD5(); QString GetSSLCertThumbprintSHA1(); QString GetSSLCertThumbprintSHA256(); QString GetSSLCertUsage(); int GetSSLCertUsageFlags(); QString GetSSLCertVersion(); QString GetSSLCertSubject();
int SetSSLCertSubject(QString qsSSLCertSubject); QByteArray GetSSLCertEncoded();
int SetSSLCertEncoded(QByteArray qbaSSLCertEncoded);

Remarks

This property includes the digital certificate that the class will use during SSL negotiation. Set this property to a valid certificate before starting SSL negotiation. To set a certificate, you may set the Encoded field to the encoded certificate. To select a certificate, use the store and subject fields.

Data Type

CloudStorageCertificate

SSLProvider Property (BackblazeB2 Class)

The Secure Sockets Layer/Transport Layer Security (SSL/TLS) implementation to use.

Syntax

ANSI (Cross Platform)
int GetSSLProvider();
int SetSSLProvider(int iSSLProvider); Unicode (Windows) INT GetSSLProvider();
INT SetSSLProvider(INT iSSLProvider);

Possible Values

SSLP_AUTOMATIC(0), 
SSLP_PLATFORM(1),
SSLP_INTERNAL(2)
int cloudstorage_backblazeb2_getsslprovider(void* lpObj);
int cloudstorage_backblazeb2_setsslprovider(void* lpObj, int iSSLProvider);
int GetSSLProvider();
int SetSSLProvider(int iSSLProvider);

Default Value

0

Remarks

This property specifies the SSL/TLS implementation to use. In most cases the default value of 0 (Automatic) is recommended and should not be changed. When set to 0 (Automatic), the class will select whether to use the platform implementation or the internal implementation depending on the operating system as well as the TLS version being used.

Possible values are as follows:

0 (sslpAutomatic - default)Automatically selects the appropriate implementation.
1 (sslpPlatform) Uses the platform/system implementation.
2 (sslpInternal) Uses the internal implementation.
Additional Notes

In most cases using the default value (Automatic) is recommended. The class will select a provider depending on the current platform.

When Automatic is selected, on Windows, the class will use the platform implementation. On Linux/macOS, the class will use the internal implementation. When TLS 1.3 is enabled via SSLEnabledProtocols, the internal implementation is used on all platforms.

Data Type

Integer

SSLServerCert Property (BackblazeB2 Class)

The server certificate for the last established connection.

Syntax

CloudStorageCertificate* GetSSLServerCert();

char* cloudstorage_backblazeb2_getsslservercerteffectivedate(void* lpObj);
char* cloudstorage_backblazeb2_getsslservercertexpirationdate(void* lpObj);
char* cloudstorage_backblazeb2_getsslservercertextendedkeyusage(void* lpObj);
char* cloudstorage_backblazeb2_getsslservercertfingerprint(void* lpObj);
char* cloudstorage_backblazeb2_getsslservercertfingerprintsha1(void* lpObj);
char* cloudstorage_backblazeb2_getsslservercertfingerprintsha256(void* lpObj);
char* cloudstorage_backblazeb2_getsslservercertissuer(void* lpObj);
char* cloudstorage_backblazeb2_getsslservercertprivatekey(void* lpObj);
int cloudstorage_backblazeb2_getsslservercertprivatekeyavailable(void* lpObj);
char* cloudstorage_backblazeb2_getsslservercertprivatekeycontainer(void* lpObj);
char* cloudstorage_backblazeb2_getsslservercertpublickey(void* lpObj);
char* cloudstorage_backblazeb2_getsslservercertpublickeyalgorithm(void* lpObj);
int cloudstorage_backblazeb2_getsslservercertpublickeylength(void* lpObj);
char* cloudstorage_backblazeb2_getsslservercertserialnumber(void* lpObj);
char* cloudstorage_backblazeb2_getsslservercertsignaturealgorithm(void* lpObj);
int cloudstorage_backblazeb2_getsslservercertstore(void* lpObj, char** lpSSLServerCertStore, int* lenSSLServerCertStore);
char* cloudstorage_backblazeb2_getsslservercertstorepassword(void* lpObj);
int cloudstorage_backblazeb2_getsslservercertstoretype(void* lpObj);
char* cloudstorage_backblazeb2_getsslservercertsubjectaltnames(void* lpObj);
char* cloudstorage_backblazeb2_getsslservercertthumbprintmd5(void* lpObj);
char* cloudstorage_backblazeb2_getsslservercertthumbprintsha1(void* lpObj);
char* cloudstorage_backblazeb2_getsslservercertthumbprintsha256(void* lpObj);
char* cloudstorage_backblazeb2_getsslservercertusage(void* lpObj);
int cloudstorage_backblazeb2_getsslservercertusageflags(void* lpObj);
char* cloudstorage_backblazeb2_getsslservercertversion(void* lpObj);
char* cloudstorage_backblazeb2_getsslservercertsubject(void* lpObj);
int cloudstorage_backblazeb2_getsslservercertencoded(void* lpObj, char** lpSSLServerCertEncoded, int* lenSSLServerCertEncoded);
QString GetSSLServerCertEffectiveDate();

QString GetSSLServerCertExpirationDate();

QString GetSSLServerCertExtendedKeyUsage();

QString GetSSLServerCertFingerprint();

QString GetSSLServerCertFingerprintSHA1();

QString GetSSLServerCertFingerprintSHA256();

QString GetSSLServerCertIssuer();

QString GetSSLServerCertPrivateKey();

bool GetSSLServerCertPrivateKeyAvailable();

QString GetSSLServerCertPrivateKeyContainer();

QString GetSSLServerCertPublicKey();

QString GetSSLServerCertPublicKeyAlgorithm();

int GetSSLServerCertPublicKeyLength();

QString GetSSLServerCertSerialNumber();

QString GetSSLServerCertSignatureAlgorithm();

QByteArray GetSSLServerCertStore();

QString GetSSLServerCertStorePassword();

int GetSSLServerCertStoreType();

QString GetSSLServerCertSubjectAltNames();

QString GetSSLServerCertThumbprintMD5();

QString GetSSLServerCertThumbprintSHA1();

QString GetSSLServerCertThumbprintSHA256();

QString GetSSLServerCertUsage();

int GetSSLServerCertUsageFlags();

QString GetSSLServerCertVersion();

QString GetSSLServerCertSubject();

QByteArray GetSSLServerCertEncoded();

Remarks

This property contains the server certificate for the last established connection.

SSLServerCert is reset every time a new connection is attempted.

This property is read-only.

Data Type

CloudStorageCertificate

StartByte Property (BackblazeB2 Class)

The byte offset from which to resume the upload or download.

Syntax

ANSI (Cross Platform)
int64 GetStartByte();
int SetStartByte(int64 lStartByte); Unicode (Windows) LONG64 GetStartByte();
INT SetStartByte(LONG64 lStartByte);
int64 cloudstorage_backblazeb2_getstartbyte(void* lpObj);
int cloudstorage_backblazeb2_setstartbyte(void* lpObj, int64 lStartByte);
qint64 GetStartByte();
int SetStartByte(qint64 lStartByte);

Default Value

0

Remarks

This property specifies the byte offset from which to resume an automatic multipart upload initiated by UploadFile, or a download initiated by DownloadFile or DownloadFileById. Refer to those methods' documentation for more information about resuming uploads and downloads.

When uploading from a stream, the class will always seek forward in the stream if the value of StartByte is greater than zero when UploadFile is called. Keep this in mind when resuming interrupted uploads.

This property is not available at design time.

Data Type

Long64

Timeout Property (BackblazeB2 Class)

The timeout for the class.

Syntax

ANSI (Cross Platform)
int GetTimeout();
int SetTimeout(int iTimeout); Unicode (Windows) INT GetTimeout();
INT SetTimeout(INT iTimeout);
int cloudstorage_backblazeb2_gettimeout(void* lpObj);
int cloudstorage_backblazeb2_settimeout(void* lpObj, int iTimeout);
int GetTimeout();
int SetTimeout(int iTimeout);

Default Value

60

Remarks

If the Timeout property is set to 0, all operations will run uninterrupted until successful completion or an error condition is encountered.

If Timeout is set to a positive value, the class will wait for the operation to complete before returning control.

The class will use DoEvents to enter an efficient wait loop during any potential waiting period, making sure that all system events are processed immediately as they arrive. This ensures that the host application does not freeze and remains responsive.

If Timeout expires, and the operation is not yet complete, the class fails with an error.

Note: By default, all timeouts are inactivity timeouts, that is, the timeout period is extended by Timeout seconds when any amount of data is successfully sent or received.

The default value for the Timeout property is 60 seconds.

Data Type

Integer

VersionMarker Property (BackblazeB2 Class)

A marker indicating what page of file versions to return next.

Syntax

ANSI (Cross Platform)
char* GetVersionMarker();
int SetVersionMarker(const char* lpszVersionMarker); Unicode (Windows) LPWSTR GetVersionMarker();
INT SetVersionMarker(LPCWSTR lpszVersionMarker);
char* cloudstorage_backblazeb2_getversionmarker(void* lpObj);
int cloudstorage_backblazeb2_setversionmarker(void* lpObj, const char* lpszVersionMarker);
QString GetVersionMarker();
int SetVersionMarker(QString qsVersionMarker);

Default Value

""

Remarks

This property will be populated when ListFileVersions is called if the results are paged and there are more pages. To list all file versions, continue to call ListFileVersions until this property returns empty string.

Refer to ListFileVersions for more information.

This property is not available at design time.

Data Type

String

AbortMultipartUpload Method (BackblazeB2 Class)

Aborts a multipart upload.

Syntax

ANSI (Cross Platform)
int AbortMultipartUpload(const char* lpszMultipartFileId);

Unicode (Windows)
INT AbortMultipartUpload(LPCWSTR lpszMultipartFileId);
int cloudstorage_backblazeb2_abortmultipartupload(void* lpObj, const char* lpszMultipartFileId);
int AbortMultipartUpload(const QString& qsMultipartFileId);

Remarks

This method aborts the multipart upload of the file specified by MultipartFileId, and invalidates the given Id.

When this method is called, all parts that have been uploaded for the multipart upload are deleted from the server.

The currently-authenticated application key must have the writeFiles capability to call this method successfully, otherwise the server will return an error. Refer to the Capabilities field for more information.

Error Handling (C++)

This method returns a result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message. (Note: This method's result code can also be obtained by calling the GetLastErrorCode() method after it returns.)

AddMetadata Method (BackblazeB2 Class)

Adds a metadata item to the Metadata properties.

Syntax

ANSI (Cross Platform)
int AddMetadata(const char* lpszName, const char* lpszValue);

Unicode (Windows)
INT AddMetadata(LPCWSTR lpszName, LPCWSTR lpszValue);
int cloudstorage_backblazeb2_addmetadata(void* lpObj, const char* lpszName, const char* lpszValue);
int AddMetadata(const QString& qsName, const QString& qsValue);

Remarks

This method adds a metadata item with the given Name and Value to the Metadata properties. Name may be up to 50 characters in length, and must consist solely of letters, numbers, hyphens (-), and underscores (_). The server stores all metadata item names in lowercase.

A metadata item's name cannot start with b2- unless said name is one those explicitly defined by the Backblaze B2 API documentation. Keep in mind that the value of such a metadata item must comply with the format specified by the Backblaze B2 API documentation as well, otherwise the server will reject it.

Note that there is a limit of 10 metadata items per bucket and per file; the class does not enforce this limit, but the server will return an error if it is exceeded. For files specifically, any value set using the ClientModifiedTime configuration setting will count towards this limit; refer that setting's documentation for more information.

Error Handling (C++)

This method returns a result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message. (Note: This method's result code can also be obtained by calling the GetLastErrorCode() method after it returns.)

AddQueryParam Method (BackblazeB2 Class)

Adds a query parameter to the QueryParams properties.

Syntax

ANSI (Cross Platform)
int AddQueryParam(const char* lpszName, const char* lpszValue);

Unicode (Windows)
INT AddQueryParam(LPCWSTR lpszName, LPCWSTR lpszValue);
int cloudstorage_backblazeb2_addqueryparam(void* lpObj, const char* lpszName, const char* lpszValue);
int AddQueryParam(const QString& qsName, const QString& qsValue);

Remarks

This method is used to add a query parameter to the QueryParams properties. Name specifies the name of the parameter, and Value specifies the value of the parameter.

All specified Values will be URL encoded by the class automatically. Consult the service documentation for details on the available parameters.

Error Handling (C++)

This method returns a result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message. (Note: This method's result code can also be obtained by calling the GetLastErrorCode() method after it returns.)

Authorize Method (BackblazeB2 Class)

Authenticates the class with the server using the current application key and Id.

Syntax

ANSI (Cross Platform)
int Authorize();

Unicode (Windows)
INT Authorize();
int cloudstorage_backblazeb2_authorize(void* lpObj);
int Authorize();

Remarks

This method authenticates the class with the server using the values held by ApplicationKey and ApplicationKeyId. A successful call to this method will clear and repopulate the following:

  • Account property
  • APIURL configuration setting
  • DownloadURL configuration setting
  • FragmentSize configuration setting (if necessary; refer to its documentation for more information)
  • SimpleUploadLimit configuration setting (if necessary; refer to its documentation for more information)

The class must authenticate with the server before any other requests can be attempted; the class will call it automatically if necessary. As part of the authentication process, the server returns an authorization token which must be used to authorize all further requests; this token is valid for up to 24 hours. When it expires, this method must be called again.

Error Handling (C++)

This method returns a result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message. (Note: This method's result code can also be obtained by calling the GetLastErrorCode() method after it returns.)

CompleteMultipartUpload Method (BackblazeB2 Class)

Completes a multipart upload by assembling the previously uploaded parts.

Syntax

ANSI (Cross Platform)
int CompleteMultipartUpload(const char* lpszMultipartFileId);

Unicode (Windows)
INT CompleteMultipartUpload(LPCWSTR lpszMultipartFileId);
int cloudstorage_backblazeb2_completemultipartupload(void* lpObj, const char* lpszMultipartFileId);
int CompleteMultipartUpload(const QString& qsMultipartFileId);

Remarks

This method completes the multipart upload of the file specified by MultipartFileId. The server will assemble all of the parts that have been uploaded into a single file. (Note: The assembled file keeps MultipartFileId as its Id.)

Note that this method automatically calls ListParts internally to obtain the information needed to complete the multipart upload. This process does not alter the Parts properties, nor does it cause the PartList event to fire.

The currently-authenticated application key must have the writeFiles capability to call this method successfully, otherwise the server will return an error. Refer to the Capabilities field for more information.

Error Handling (C++)

This method returns a result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message. (Note: This method's result code can also be obtained by calling the GetLastErrorCode() method after it returns.)

Config Method (BackblazeB2 Class)

Sets or retrieves a configuration setting.

Syntax

ANSI (Cross Platform)
char* Config(const char* lpszConfigurationString);

Unicode (Windows)
LPWSTR Config(LPCWSTR lpszConfigurationString);
char* cloudstorage_backblazeb2_config(void* lpObj, const char* lpszConfigurationString);
QString Config(const QString& qsConfigurationString);

Remarks

Config is a generic method available in every class. It is used to set and retrieve configuration settings for the class.

These settings are similar in functionality to properties, but they are rarely used. In order to avoid "polluting" the property namespace of the class, access to these internal properties is provided through the Config method.

To set a configuration setting named PROPERTY, you must call Config("PROPERTY=VALUE"), where VALUE is the value of the setting expressed as a string. For boolean values, use the strings "True", "False", "0", "1", "Yes", or "No" (case does not matter).

To read (query) the value of a configuration setting, you must call Config("PROPERTY"). The value will be returned as a string.

Error Handling (C++)

This method returns a String value; after it returns, call the GetLastErrorCode() method to obtain its result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message.

CopyFile Method (BackblazeB2 Class)

Copies a file.

Syntax

ANSI (Cross Platform)
char* CopyFile(const char* lpszSrcFileId, const char* lpszDestBucketId, const char* lpszDestFileName);

Unicode (Windows)
LPWSTR CopyFile(LPCWSTR lpszSrcFileId, LPCWSTR lpszDestBucketId, LPCWSTR lpszDestFileName);
char* cloudstorage_backblazeb2_copyfile(void* lpObj, const char* lpszSrcFileId, const char* lpszDestBucketId, const char* lpszDestFileName);
QString CopyFile(const QString& qsSrcFileId, const QString& qsDestBucketId, const QString& qsDestFileName);

Remarks

This method copies the file version specified by SrcFileId to the bucket specified by DestBucketId with the name DestFileName. The Id of the newly-created file is returned. If DestBucketId is empty, the source file's bucket is used as the destination bucket.

DestFileName is subject to the same restrictions described in the UploadFile method's documentation; refer to it for more information. If a file named DestFileName already exists in the destination bucket, a new version of it is created.

If the SendMetadataOnCopy configuration setting is enabled, and the ContentType property, the Metadata properties, and/or the ClientModifiedTime configuration setting are non-empty, then their values will be applied to the destination file. Otherwise, the server will copy the source file's content type and metadata to the destination file.

Finally, note that this method can only be used to copy files up to 5GB in size (or, if Range is non-empty, a range of up to 5GB of data from a larger file). To copy more than 5GB of data, start a new multipart upload with StartMultipartUpload, and then use the CopyPart method to copy the desired data in parts.

The currently-authenticated application key must have the writeFiles and (if the source file's bucket kind is allPrivate) readFiles capabilities to call this method successfully, otherwise the server will return an error. Refer to the Capabilities field for more information.

Error Handling (C++)

This method returns a String value; after it returns, call the GetLastErrorCode() method to obtain its result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message.

CopyPart Method (BackblazeB2 Class)

Copies the specified file as part of a multipart upload.

Syntax

ANSI (Cross Platform)
int CopyPart(const char* lpszSrcFileId, const char* lpszMultipartFileId, int iPartNumber);

Unicode (Windows)
INT CopyPart(LPCWSTR lpszSrcFileId, LPCWSTR lpszMultipartFileId, INT iPartNumber);
int cloudstorage_backblazeb2_copypart(void* lpObj, const char* lpszSrcFileId, const char* lpszMultipartFileId, int iPartNumber);
int CopyPart(const QString& qsSrcFileId, const QString& qsMultipartFileId, int iPartNumber);

Remarks

This method copies the file version specified by SrcFileId to a new part in the multipart upload of the file specified by MultipartFileId. The part's number is specified by PartNumber; it must be a value in the range 1 to 10000, inclusive. If the specified multipart upload already has a part with the given PartNumber, it is replaced with the one created by this request.

All parts must be between 5MB and 5GB in size (except for the last part, which can be as small as 1 byte). The Range property can optionally be set before calling this method to copy only a specific range of data from the specified source file.

The currently-authenticated application key must have the writeFiles and (if the source file's bucket kind is allPrivate) readFiles capabilities to call this method successfully, otherwise the server will return an error. Refer to the Capabilities field for more information.

Error Handling (C++)

This method returns a result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message. (Note: This method's result code can also be obtained by calling the GetLastErrorCode() method after it returns.)

CreateAppKey Method (BackblazeB2 Class)

Creates a new application key.

Syntax

ANSI (Cross Platform)
char* CreateAppKey(const char* lpszKeyName, const char* lpszCapabilities, const char* lpszAllowedBucketId, const char* lpszAllowedPrefix, int64 lValidityDuration);

Unicode (Windows)
LPWSTR CreateAppKey(LPCWSTR lpszKeyName, LPCWSTR lpszCapabilities, LPCWSTR lpszAllowedBucketId, LPCWSTR lpszAllowedPrefix, LONG64 lValidityDuration);
char* cloudstorage_backblazeb2_createappkey(void* lpObj, const char* lpszKeyName, const char* lpszCapabilities, const char* lpszAllowedBucketId, const char* lpszAllowedPrefix, int64 lValidityDuration);
QString CreateAppKey(const QString& qsKeyName, const QString& qsCapabilities, const QString& qsAllowedBucketId, const QString& qsAllowedPrefix, qint64 lValidityDuration);

Remarks

This method creates a new application key named KeyName with the specified Capabilities. If successful, this method returns a string containing the newly-created application key's Id, followed by the key itself, separated by a newline (\n) character; for example:

[application_key_id]
[application_key]
Important: This is the only time that the application key's key string will be returned, be sure to save it immediately. It is not present in the results returned by the ListAppKeys method (this is a security feature enforced by the server).

The string passed for Capabilities must be formatted as a comma-separated list of one or more of the following:

To restrict the new application key to a specific bucket, pass the bucket's Id for AllowedBucketId. To further restrict it to files with a specific prefix within that bucket, pass said prefix for AllowedPrefix. It is not possible to apply a prefix restriction without a bucket restriction.

The ValidityDuration parameter specifies how many seconds the new application key will be valid for. The maximum valid value is 86400000 (1000 days); values less than 1 will cause the application key to remain valid indefinitely.

The currently-authenticated application key must have the writeKeys capability to call this method successfully, otherwise the server will return an error. Refer to the Capabilities field for more information.

Error Handling (C++)

This method returns a String value; after it returns, call the GetLastErrorCode() method to obtain its result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message.

CreateBucket Method (BackblazeB2 Class)

Creates a new bucket.

Syntax

ANSI (Cross Platform)
char* CreateBucket(const char* lpszBucketName, const char* lpszKind);

Unicode (Windows)
LPWSTR CreateBucket(LPCWSTR lpszBucketName, LPCWSTR lpszKind);
char* cloudstorage_backblazeb2_createbucket(void* lpObj, const char* lpszBucketName, const char* lpszKind);
QString CreateBucket(const QString& qsBucketName, const QString& qsKind);

Remarks

This method creates a new bucket named BucketName of the specified Kind. Valid values for Kind are allPrivate (default if empty) and allPublic. Each account may have up to 100 buckets.

The value passed for BucketName must comply with the following restrictions:

  • Must be between 6 and 50 characters long (inclusive).
  • Must consist solely of letters, digits, and hyphens (-).
  • Cannot start with the string b2-.
  • Must be globally unique (i.e., no two accounts may have a bucket with the same name) when compared case-insensitively.

If any items are present in the Metadata properties, they will also be included in the request and applied to the newly-created bucket. Keep in mind that the server enforces a limit of 10 metadata items per bucket.

The currently-authenticated application key must have the writeBuckets capability to call this method successfully, otherwise the server will return an error. Refer to the Capabilities field for more information.

Error Handling (C++)

This method returns a String value; after it returns, call the GetLastErrorCode() method to obtain its result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message.

DeleteAppKey Method (BackblazeB2 Class)

Deletes an application key.

Syntax

ANSI (Cross Platform)
int DeleteAppKey(const char* lpszKeyId);

Unicode (Windows)
INT DeleteAppKey(LPCWSTR lpszKeyId);
int cloudstorage_backblazeb2_deleteappkey(void* lpObj, const char* lpszKeyId);
int DeleteAppKey(const QString& qsKeyId);

Remarks

This method deletes the application key specified by KeyId.

The currently-authenticated application key must have the deleteKeys capability to call this method successfully, otherwise the server will return an error. Refer to the Capabilities field for more information.

Error Handling (C++)

This method returns a result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message. (Note: This method's result code can also be obtained by calling the GetLastErrorCode() method after it returns.)

DeleteBucket Method (BackblazeB2 Class)

Deletes a bucket.

Syntax

ANSI (Cross Platform)
int DeleteBucket(const char* lpszBucketId);

Unicode (Windows)
INT DeleteBucket(LPCWSTR lpszBucketId);
int cloudstorage_backblazeb2_deletebucket(void* lpObj, const char* lpszBucketId);
int DeleteBucket(const QString& qsBucketId);

Remarks

This method deletes the bucket specified by BucketId. A bucket must be completely empty to be deleted.

Note that bucket names are global, and it may not be possible to recreate a deleted bucket if its name is taken by another user in the meantime.

The currently-authenticated application key must have the deleteBuckets capability to call this method successfully, otherwise the server will return an error. Refer to the Capabilities field for more information.

Error Handling (C++)

This method returns a result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message. (Note: This method's result code can also be obtained by calling the GetLastErrorCode() method after it returns.)

DeleteFile Method (BackblazeB2 Class)

Deletes all versions of a file.

Syntax

ANSI (Cross Platform)
int DeleteFile(const char* lpszBucketId, const char* lpszFileName);

Unicode (Windows)
INT DeleteFile(LPCWSTR lpszBucketId, LPCWSTR lpszFileName);
int cloudstorage_backblazeb2_deletefile(void* lpObj, const char* lpszBucketId, const char* lpszFileName);
int DeleteFile(const QString& qsBucketId, const QString& qsFileName);

Remarks

This method deletes all versions of the file named FileName from the bucket specified by BucketId. If the latest "version" of the specified file is an incomplete multipart upload, the multipart upload is aborted.

The currently-authenticated application key must have the listFiles and deleteFiles capabilities to call this method successfully, otherwise the server will return an error. Refer to the Capabilities field for more information.

Note: This method is offered as a convenience, as the Backblaze B2 REST API does not technically provide a way to delete all versions of a file using a single request. When this method is called, the class uses ListFileVersions to obtain a list of all versions of the specified file, and then uses DeleteFileVersion to delete each one, in order from oldest to newest. If any one request made during this process fails, this method will fail immediately. This process does not alter the Files or FileMarker properties, nor does it cause the FileList event to fire.

Error Handling (C++)

This method returns a result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message. (Note: This method's result code can also be obtained by calling the GetLastErrorCode() method after it returns.)

DeleteFileVersion Method (BackblazeB2 Class)

Deletes a file version.

Syntax

ANSI (Cross Platform)
int DeleteFileVersion(const char* lpszFileId);

Unicode (Windows)
INT DeleteFileVersion(LPCWSTR lpszFileId);
int cloudstorage_backblazeb2_deletefileversion(void* lpObj, const char* lpszFileId);
int DeleteFileVersion(const QString& qsFileId);

Remarks

This method deletes the file version specified by FileId, regardless of whether said version is an actual file or a hide marker

If the most recent version of a file is deleted, and older versions of the file exist, then the most recent older version will become the "current" version. If said version is a hide marker, then the file will become "hidden"; refer to HideFile for more information.

The currently-authenticated application key must have the deleteFiles capability to call this method successfully, otherwise the server will return an error. Refer to the Capabilities field for more information.

Error Handling (C++)

This method returns a result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message. (Note: This method's result code can also be obtained by calling the GetLastErrorCode() method after it returns.)

DownloadFile Method (BackblazeB2 Class)

Downloads a file by name.

Syntax

ANSI (Cross Platform)
int DownloadFile(const char* lpszBucketName, const char* lpszFileName);

Unicode (Windows)
INT DownloadFile(LPCWSTR lpszBucketName, LPCWSTR lpszFileName);
int cloudstorage_backblazeb2_downloadfile(void* lpObj, const char* lpszBucketName, const char* lpszFileName);
int DownloadFile(const QString& qsBucketName, const QString& qsFileName);

Remarks

This method downloads the latest version of the file named FileName from the bucket named BucketName. The Range property can optionally be set before calling this method to download a specific range of data from the file.

This method can be used to download files that are owned by other accounts, so long as an appropriate download authorization token and download URL are supplied using the DownloadAuthToken and DownloadURL configuration settings; refer to their documentation for more information.

If a stream has been specified using SetDownloadStream, the file data will be sent through it. If a stream is not specified, and LocalFile is set, the file data will be saved to the specified location; otherwise, the file data will be held by FileData.

To download and decrypt an encrypted file, set EncryptionAlgorithm and EncryptionPassword before calling this method.

Download Notes

In the simplest use-case, downloading a file looks like this: b2.LocalFile = "../MyData.zip"; b2.DownloadFile("MyBucket", "data.zip"); // Or, DownloadFileById().

Resuming Downloads

The class also supports resuming failed downloads by using the StartByte property. If a download is interrupted, set StartByte to the appropriate offset before calling this method to resume the download. string downloadFile = "../MyData.zip"; b2.LocalFile = downloadFile; b2.DownloadFile("MyBucket", "data.zip"); // Or, DownloadFileById(). //The transfer is interrupted and DownloadFile() above fails. Later, resume the download: //Get the size of the partially downloaded file b2.StartByte = new FileInfo(downloadFile).Length; b2.DownloadFile("MyBucket", "data.zip"); // Or, DownloadFileById().

Resuming Encrypted File Downloads

Resuming encrypted file downloads is only supported when LocalFile was set in the initial download attempt.

If LocalFile is set when beginning an encrypted download, the class creates a temporary file in TempPath to hold the encrypted data until the download is complete. If the download is interrupted, DownloadTempFile will be populated with the path of the temporary file that holds the partial data.

To resume, DownloadTempFile must be populated, along with StartByte, to allow the remainder of the encrypted data to be downloaded. Once the encrypted data is downloaded it will be decrypted and written to LocalFile. b2.LocalFile = "../MyData.zip"; b2.EncryptionPassword = "password"; b2.DownloadFile("MyBucket", "data.zip"); // Or, DownloadFileById(). //The transfer is interrupted and DownloadFile() above fails. Later, resume the download: //Get the size of the partially downloaded temp file b2.StartByte = new FileInfo(b2.Config("DownloadTempFile")).Length; b2.DownloadFile("MyBucket", "data.zip"); // Or, DownloadFileById().

The currently-authenticated application key must have the readFiles capability (unless the bucket is public) to call this method successfully, otherwise the server will return an error. Refer to the Capabilities field for more information.

Error Handling (C++)

This method returns a result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message. (Note: This method's result code can also be obtained by calling the GetLastErrorCode() method after it returns.)

DownloadFileById Method (BackblazeB2 Class)

Downloads a file by Id.

Syntax

ANSI (Cross Platform)
int DownloadFileById(const char* lpszFileId);

Unicode (Windows)
INT DownloadFileById(LPCWSTR lpszFileId);
int cloudstorage_backblazeb2_downloadfilebyid(void* lpObj, const char* lpszFileId);
int DownloadFileById(const QString& qsFileId);

Remarks

This method downloads the file version specified by FileId. The Range property can optionally be set before calling this method to download a specific range of data from the file.

If a stream has been specified using SetDownloadStream, the file data will be sent through it. If a stream is not specified, and LocalFile is set, the file data will be saved to the specified location; otherwise, the file data will be held by FileData.

To download and decrypt an encrypted file, set EncryptionAlgorithm and EncryptionPassword before calling this method.

Download Notes

In the simplest use-case, downloading a file looks like this: b2.LocalFile = "../MyData.zip"; b2.DownloadFile("MyBucket", "data.zip"); // Or, DownloadFileById().

Resuming Downloads

The class also supports resuming failed downloads by using the StartByte property. If a download is interrupted, set StartByte to the appropriate offset before calling this method to resume the download. string downloadFile = "../MyData.zip"; b2.LocalFile = downloadFile; b2.DownloadFile("MyBucket", "data.zip"); // Or, DownloadFileById(). //The transfer is interrupted and DownloadFile() above fails. Later, resume the download: //Get the size of the partially downloaded file b2.StartByte = new FileInfo(downloadFile).Length; b2.DownloadFile("MyBucket", "data.zip"); // Or, DownloadFileById().

Resuming Encrypted File Downloads

Resuming encrypted file downloads is only supported when LocalFile was set in the initial download attempt.

If LocalFile is set when beginning an encrypted download, the class creates a temporary file in TempPath to hold the encrypted data until the download is complete. If the download is interrupted, DownloadTempFile will be populated with the path of the temporary file that holds the partial data.

To resume, DownloadTempFile must be populated, along with StartByte, to allow the remainder of the encrypted data to be downloaded. Once the encrypted data is downloaded it will be decrypted and written to LocalFile. b2.LocalFile = "../MyData.zip"; b2.EncryptionPassword = "password"; b2.DownloadFile("MyBucket", "data.zip"); // Or, DownloadFileById(). //The transfer is interrupted and DownloadFile() above fails. Later, resume the download: //Get the size of the partially downloaded temp file b2.StartByte = new FileInfo(b2.Config("DownloadTempFile")).Length; b2.DownloadFile("MyBucket", "data.zip"); // Or, DownloadFileById().

The currently-authenticated application key must have the readFiles capability (unless the bucket is public) to call this method successfully, otherwise the server will return an error. Refer to the Capabilities field for more information.

Error Handling (C++)

This method returns a result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message. (Note: This method's result code can also be obtained by calling the GetLastErrorCode() method after it returns.)

GetBucketInfo Method (BackblazeB2 Class)

Gets a bucket's information and metadata.

Syntax

ANSI (Cross Platform)
int GetBucketInfo(const char* lpszBucketId);

Unicode (Windows)
INT GetBucketInfo(LPCWSTR lpszBucketId);
int cloudstorage_backblazeb2_getbucketinfo(void* lpObj, const char* lpszBucketId);
int GetBucketInfo(const QString& qsBucketId);

Remarks

This method gets information and metadata for the bucket specified by BucketId.

Calling this method will fire the BucketList and MetadataList events, and will re-populate the Buckets and Metadata collection properties.

The currently-authenticated application key must have the listBuckets capability to call this method successfully, otherwise the server will return an error. Refer to the Capabilities field for more information.

Error Handling (C++)

This method returns a result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message. (Note: This method's result code can also be obtained by calling the GetLastErrorCode() method after it returns.)

GetDownloadAuthToken Method (BackblazeB2 Class)

Create a download authorization token for one or more files in a bucket.

Syntax

ANSI (Cross Platform)
char* GetDownloadAuthToken(const char* lpszAllowedBucketId, const char* lpszAllowedPrefix, int iValidityDuration);

Unicode (Windows)
LPWSTR GetDownloadAuthToken(LPCWSTR lpszAllowedBucketId, LPCWSTR lpszAllowedPrefix, INT iValidityDuration);
char* cloudstorage_backblazeb2_getdownloadauthtoken(void* lpObj, const char* lpszAllowedBucketId, const char* lpszAllowedPrefix, int iValidityDuration);
QString GetDownloadAuthToken(const QString& qsAllowedBucketId, const QString& qsAllowedPrefix, int iValidityDuration);

Remarks

This method creates and returns a download authorization token for the files in the bucket specified by AllowedBucketId whose names start with AllowedPrefix. The newly-created token will remain valid for the number of seconds specified by ValidityDuration, which must be a value in the range 1 to 604800 (1 week), inclusive.

Download authorization tokens created using this method can be used by anybody to download an applicable file by name; they cannot be used to download a file by Id. Refer to the DownloadFile method for more information.

The currently-authenticated application key must have the shareFiles capability to call this method successfully, otherwise the server will return an error. Refer to the Capabilities field for more information.

Error Handling (C++)

This method returns a String value; after it returns, call the GetLastErrorCode() method to obtain its result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message.

GetFileInfo Method (BackblazeB2 Class)

Gets a file's information and metadata.

Syntax

ANSI (Cross Platform)
int GetFileInfo(const char* lpszFileId);

Unicode (Windows)
INT GetFileInfo(LPCWSTR lpszFileId);
int cloudstorage_backblazeb2_getfileinfo(void* lpObj, const char* lpszFileId);
int GetFileInfo(const QString& qsFileId);

Remarks

This method gets information and metadata for the file version specified by FileId (which must be a real file version, or a hide marker, not a multipart upload).

Calling this method will fire the FileList and MetadataList events, and will re-populate the Files and Metadata collection properties.

The currently-authenticated application key must have the readFiles capability to call this method successfully, otherwise the server will return an error. Refer to the Capabilities field for more information.

Error Handling (C++)

This method returns a result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message. (Note: This method's result code can also be obtained by calling the GetLastErrorCode() method after it returns.)

HideFile Method (BackblazeB2 Class)

Hides a file.

Syntax

ANSI (Cross Platform)
char* HideFile(const char* lpszBucketId, const char* lpszFileName);

Unicode (Windows)
LPWSTR HideFile(LPCWSTR lpszBucketId, LPCWSTR lpszFileName);
char* cloudstorage_backblazeb2_hidefile(void* lpObj, const char* lpszBucketId, const char* lpszFileName);
QString HideFile(const QString& qsBucketId, const QString& qsFileName);

Remarks

This method hides the file named FileName in the bucket specified by BucketId by creating a special version of the file called a hide marker.

If the latest version of a file is a hide marker, then the file will not appear in the results returned by ListFiles, nor can it be downloaded by name using DownloadFile. However:

  • Any version of the file (excluding hide markers) can still be downloaded directly using DownloadFileById.
  • All versions of the file can still be deleted, either all at once using DeleteFile, or individually using DeleteFileVersion.
  • All versions of the file will still appear in the results returned by ListFileVersions, and can still be queried individually using GetFileInfo.

To unhide a file, simply delete the hide marker using DeleteFileVersion.

The currently-authenticated application key must have the writeFiles capability to call this method successfully, otherwise the server will return an error. Refer to the Capabilities field for more information.

Error Handling (C++)

This method returns a String value; after it returns, call the GetLastErrorCode() method to obtain its result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message.

Interrupt Method (BackblazeB2 Class)

This method interrupts the current method.

Syntax

ANSI (Cross Platform)
int Interrupt();

Unicode (Windows)
INT Interrupt();
int cloudstorage_backblazeb2_interrupt(void* lpObj);
int Interrupt();

Remarks

If there is no method in progress, Interrupt simply returns, doing nothing.

Error Handling (C++)

This method returns a result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message. (Note: This method's result code can also be obtained by calling the GetLastErrorCode() method after it returns.)

ListAppKeys Method (BackblazeB2 Class)

Lists the account's application keys.

Syntax

ANSI (Cross Platform)
int ListAppKeys();

Unicode (Windows)
INT ListAppKeys();
int cloudstorage_backblazeb2_listappkeys(void* lpObj);
int ListAppKeys();

Remarks

This method lists the application keys associated with the account. Note that the account's master application key is not included in the results.

Calling this method will fire the AppKeyList event once for each application key, and will also populate the AppKeys properties.

If there are still more application keys available to list when this method returns, the AppKeyMarker property will be populated. Continue to call this method until AppKeyMarker is empty to accumulate all pages of results in the AppKeys properties. Alternatively, the AccumulatePages configuration setting can be disabled to clear the AppKeys properties every time a page of results is returned.

The MaxAppKeyResults configuration setting can be used to control the maximum number of results returned each time this method is called.

The currently-authenticated application key must have the listKeys capability to call this method successfully, otherwise the server will return an error. Refer to the Capabilities field for more information.

Error Handling (C++)

This method returns a result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message. (Note: This method's result code can also be obtained by calling the GetLastErrorCode() method after it returns.)

ListBuckets Method (BackblazeB2 Class)

Lists all buckets in the account.

Syntax

ANSI (Cross Platform)
int ListBuckets();

Unicode (Windows)
INT ListBuckets();
int cloudstorage_backblazeb2_listbuckets(void* lpObj);
int ListBuckets();

Remarks

This method lists all buckets in the account.

Calling this method will fire the BucketList event once for each bucket, and will also populate the Buckets properties. If the ListWithMetadata configuration setting is enabled, the MetadataList event will also be fired, once for each metadata item associated with each bucket.

If the currently-authenticated application key is restricted to a specific bucket (indicated by the AllowedBucketId field being non-empty), the results will only include information for that bucket.

The currently-authenticated application key must have the listBuckets capability to call this method successfully, otherwise the server will return an error. Refer to the Capabilities field for more information.

Error Handling (C++)

This method returns a result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message. (Note: This method's result code can also be obtained by calling the GetLastErrorCode() method after it returns.)

ListFiles Method (BackblazeB2 Class)

Lists the files in a bucket.

Syntax

ANSI (Cross Platform)
int ListFiles(const char* lpszBucketId);

Unicode (Windows)
INT ListFiles(LPCWSTR lpszBucketId);
int cloudstorage_backblazeb2_listfiles(void* lpObj, const char* lpszBucketId);
int ListFiles(const QString& qsBucketId);

Remarks

This method lists the files in the bucket specified by BucketId.

Before calling this method, the Prefix property may be set in order to restrict the results to only the files whose names begin with the a given string. The Delimiter property can also be used to further tune the results returned. The MaxResults configuration setting may also be used to limit the number of results returned.

If the currently-authenticated application key is restricted to a specific file name prefix (indicated by the AllowedPrefix field being non-empty), then the Prefix property will automatically be set to that prefix if it is empty when this method is called.

Calling this method will fire the FileList event once for each file, and will also populate the Files properties. If the ListWithMetadata configuration setting is enabled, the MetadataList event will also be fired, once for each metadata item associated with each file.

If there are still more files available to list when this method returns, the FileMarker property will be populated. Continue to call this method until FileMarker is empty to accumulate all pages of results in the Files properties. Alternatively, the AccumulatePages configuration setting can be disabled to clear the Files properties every time a page of results is returned.

The currently-authenticated application key must have the listFiles capability to call this method successfully, otherwise the server will return an error. Refer to the Capabilities field for more information.

File Hierarchy Traversal

By using the Delimiter and Prefix properties in tandem, applications can effectively "traverse" a virtual hierarchy of files (or file versions) as if it were a filesystem. For example, assume that files with the following names exist within a bucket:

  • MyCompany
  • MyCompany/Department1
  • MyCompany/Department2
  • MyCompany/Department2/EmployeeA
  • MyCompany/Department2/EmployeeB

With Delimiter set to /, we can set Prefix to successively "deeper" values before calling ListFiles or ListFileVersions for the following effect:

Prefix Value Files Returned Folders Returned
(empty) MyCompany MyCompany/
MyCompany/ MyCompany/Department1

MyCompany/Department2

MyCompany/Department2/
MyCompany/Department2/ MyCompany/Department2/EmployeeA

MyCompany/Department2/EmployeeB

(none)

Error Handling (C++)

This method returns a result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message. (Note: This method's result code can also be obtained by calling the GetLastErrorCode() method after it returns.)

ListFileVersions Method (BackblazeB2 Class)

Lists the file versions in a bucket.

Syntax

ANSI (Cross Platform)
int ListFileVersions(const char* lpszBucketId);

Unicode (Windows)
INT ListFileVersions(LPCWSTR lpszBucketId);
int cloudstorage_backblazeb2_listfileversions(void* lpObj, const char* lpszBucketId);
int ListFileVersions(const QString& qsBucketId);

Remarks

This method lists the file versions in the bucket specified by BucketId.

Before calling this method, the Prefix property may be set in order to restrict the results to only the file versions whose names begin with the a given string. The Delimiter property can also be used to further tune the results returned. The MaxResults configuration setting may also be used to limit the number of results returned.

If the currently-authenticated application key is restricted to a specific file name prefix (indicated by the AllowedPrefix field being non-empty), then the Prefix property will automatically be set to that prefix if it is empty when this method is called.

Calling this method will fire the FileList event once for each file version, and will also populate the Files properties. If the ListWithMetadata configuration setting is enabled, the MetadataList event will also be fired, once for each metadata item associated with each file version.

If there are still more files versions available to list when this method returns, the VersionMarker property will be populated. Continue to call this method until VersionMarker is empty to accumulate all pages of results in the Files properties. Alternatively, the AccumulatePages configuration setting can be disabled to clear the Files properties every time a page of results is returned.

The currently-authenticated application key must have the listFiles capability to call this method successfully, otherwise the server will return an error. Refer to the Capabilities field for more information.

File Hierarchy Traversal

By using the Delimiter and Prefix properties in tandem, applications can effectively "traverse" a virtual hierarchy of files (or file versions) as if it were a filesystem. For example, assume that files with the following names exist within a bucket:

  • MyCompany
  • MyCompany/Department1
  • MyCompany/Department2
  • MyCompany/Department2/EmployeeA
  • MyCompany/Department2/EmployeeB

With Delimiter set to /, we can set Prefix to successively "deeper" values before calling ListFiles or ListFileVersions for the following effect:

Prefix Value Files Returned Folders Returned
(empty) MyCompany MyCompany/
MyCompany/ MyCompany/Department1

MyCompany/Department2

MyCompany/Department2/
MyCompany/Department2/ MyCompany/Department2/EmployeeA

MyCompany/Department2/EmployeeB

(none)

Error Handling (C++)

This method returns a result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message. (Note: This method's result code can also be obtained by calling the GetLastErrorCode() method after it returns.)

ListMultipartUploads Method (BackblazeB2 Class)

Lists the in-progress multipart uploads in a bucket.

Syntax

ANSI (Cross Platform)
int ListMultipartUploads(const char* lpszBucketId);

Unicode (Windows)
INT ListMultipartUploads(LPCWSTR lpszBucketId);
int cloudstorage_backblazeb2_listmultipartuploads(void* lpObj, const char* lpszBucketId);
int ListMultipartUploads(const QString& qsBucketId);

Remarks

This method lists the in-progress multipart uploads in the bucket specified by BucketId.

Before calling this method, the Prefix property may be set in order to restrict the results to only the multipart uploads whose file names begin with the a given string.

If the currently-authenticated application key is restricted to a specific file name prefix (indicated by the AllowedPrefix field being non-empty), then the Prefix property will automatically be set to that prefix if it is empty when this method is called.

Calling this method will fire the FileList event once for each multipart upload, and will also populate the Files properties. If the ListWithMetadata configuration setting is enabled, the MetadataList event will also be fired, once for each metadata item associated with each multipart upload.

The currently-authenticated application key must have the listFiles capability to call this method successfully, otherwise the server will return an error. Refer to the Capabilities field for more information.

Error Handling (C++)

This method returns a result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message. (Note: This method's result code can also be obtained by calling the GetLastErrorCode() method after it returns.)

ListParts Method (BackblazeB2 Class)

Lists a multipart upload's parts.

Syntax

ANSI (Cross Platform)
int ListParts(const char* lpszMultipartFileId);

Unicode (Windows)
INT ListParts(LPCWSTR lpszMultipartFileId);
int cloudstorage_backblazeb2_listparts(void* lpObj, const char* lpszMultipartFileId);
int ListParts(const QString& qsMultipartFileId);

Remarks

This method lists the parts that have been created for the multipart file upload specified by MultipartFileId.

Calling this method will fire the PartList event once for each part, and will also populate the Parts properties.

If there are still more parts available to list when this method returns, the PartMarker property will be populated. Continue to call this method until PartMarker is empty to accumulate all pages of results in the Parts properties. Alternatively, the AccumulatePages configuration setting can be disabled to clear the Parts properties every time a page of results is returned.

The MaxPartResults configuration setting can be used to control the maximum number of results returned each time this method is called.

The currently-authenticated application key must have the writeFiles capability to call this method successfully, otherwise the server will return an error. Refer to the Capabilities field for more information.

Error Handling (C++)

This method returns a result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message. (Note: This method's result code can also be obtained by calling the GetLastErrorCode() method after it returns.)

Reset Method (BackblazeB2 Class)

Resets the class to its initial state.

Syntax

ANSI (Cross Platform)
int Reset();

Unicode (Windows)
INT Reset();
int cloudstorage_backblazeb2_reset(void* lpObj);
int Reset();

Remarks

This method resets the class to its initial state.

Error Handling (C++)

This method returns a result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message. (Note: This method's result code can also be obtained by calling the GetLastErrorCode() method after it returns.)

SendCustomRequest Method (BackblazeB2 Class)

Sends a custom request to the Backblaze B2 API.

Syntax

ANSI (Cross Platform)
int SendCustomRequest(const char* lpszHttpMethod, const char* lpszOperation, const char* lpszRequestBody);

Unicode (Windows)
INT SendCustomRequest(LPCWSTR lpszHttpMethod, LPCWSTR lpszOperation, LPCWSTR lpszRequestBody);
int cloudstorage_backblazeb2_sendcustomrequest(void* lpObj, const char* lpszHttpMethod, const char* lpszOperation, const char* lpszRequestBody);
int SendCustomRequest(const QString& qsHttpMethod, const QString& qsOperation, const QString& qsRequestBody);

Remarks

This method can be used to send arbitrary requests to the Backblaze B2 API.

Valid values for HttpMethod are:

  • GET (default if empty)
  • HEAD
  • POST

The value passed for Operation must be one of the API operations described in the Backblaze B2 REST API documentation (e.g., b2_list_buckets).

Usage

When this method is called, the class does the following:

  1. Builds a request URL, including query parameters, as follows:
    • The specified Operation is appended to the base Backblaze B2 API URL (refer to the APIURL configuration setting for more information).
    • All query parameters in the QueryParams properties are added to the request URL.
  2. Sends the request using the specified HttpMethod, the request URL built in step 1, the header information built from AuthToken and OtherHeaders, and the given RequestBody (if non-empty).
  3. Stores the response headers in the ParsedHeaders properties, and the response body in the stream specified using SetDownloadStream, the specified LocalFile, or ResourceData (using the same logic as DownloadFile).

If the response body is JSON data, the XPath, XText, and other X* configuration settings can then be used to navigate and extract information from it.

Error Handling (C++)

This method returns a result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message. (Note: This method's result code can also be obtained by calling the GetLastErrorCode() method after it returns.)

SetDownloadStream Method (BackblazeB2 Class)

Sets the stream to which downloaded data will be written.

Syntax

ANSI (Cross Platform)
int SetDownloadStream(CloudStorageStream* sDownloadStream);

Unicode (Windows)
INT SetDownloadStream(CloudStorageStream* sDownloadStream);
int cloudstorage_backblazeb2_setdownloadstream(void* lpObj, CloudStorageStream* sDownloadStream);
int SetDownloadStream(CloudStorageStream* sDownloadStream);

Remarks

If a download stream is set before data is downloaded, the downloaded data will be written to the stream. The stream should be open and normally set to position 0.

Note: Passing a non-null value for DownloadStream will cause LocalFile to be cleared. Similarly, setting LocalFile to a non-empty value will discard any stream set using this method.

Error Handling (C++)

This method returns a result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message. (Note: This method's result code can also be obtained by calling the GetLastErrorCode() method after it returns.)

SetUploadStream Method (BackblazeB2 Class)

Sets the stream from which data is read when uploading.

Syntax

ANSI (Cross Platform)
int SetUploadStream(CloudStorageStream* sUploadStream);

Unicode (Windows)
INT SetUploadStream(CloudStorageStream* sUploadStream);
int cloudstorage_backblazeb2_setuploadstream(void* lpObj, CloudStorageStream* sUploadStream);
int SetUploadStream(CloudStorageStream* sUploadStream);

Remarks

If an upload stream is set before data is uploaded, the content of the stream will be read by the class and uploaded to the server. The stream should be open and normally set to position 0.

Note: Passing a non-null value for UploadStream will cause LocalFile to be cleared. Similarly, setting LocalFile to a non-empty value will discard any stream set using this method.

Error Handling (C++)

This method returns a result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message. (Note: This method's result code can also be obtained by calling the GetLastErrorCode() method after it returns.)

StartMultipartUpload Method (BackblazeB2 Class)

Starts a new multipart upload.

Syntax

ANSI (Cross Platform)
char* StartMultipartUpload(const char* lpszBucketId, const char* lpszFileName);

Unicode (Windows)
LPWSTR StartMultipartUpload(LPCWSTR lpszBucketId, LPCWSTR lpszFileName);
char* cloudstorage_backblazeb2_startmultipartupload(void* lpObj, const char* lpszBucketId, const char* lpszFileName);
QString StartMultipartUpload(const QString& qsBucketId, const QString& qsFileName);

Remarks

This method starts a new multipart upload for a file named FileName in the bucket specified by BucketId, and returns the Id of the newly-created multipart upload. This Id can then be used to call the following methods:

FileName is subject to the same restrictions described in the UploadFile method's documentation; refer to it for more information. If a file named FileName already exists in the destination bucket, a new version of it is created.

The following information is also included in the request, and will be applied to the final file when the multipart upload is completed with CompleteMultipartUpload:

  • All metadata items present in the Metadata properties. Keep in mind that the server enforces a limit of 10 metadata items per file.
  • If the ClientModifiedTime configuration setting is non-empty: an additional metadata item with its value (which does count towards the 10 item limit).
  • The value of the ContentType property.

Multipart uploads never expire, they must be explicitly completed or aborted using CompleteMultipartUpload or AbortMultipartUpload. The ListMultipartUploads method can be used to retrieve a list of current multipart uploads.

The currently-authenticated application key must have the writeFiles capability to call this method successfully, otherwise the server will return an error. Refer to the Capabilities field for more information.

Error Handling (C++)

This method returns a String value; after it returns, call the GetLastErrorCode() method to obtain its result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message.

UpdateBucket Method (BackblazeB2 Class)

Updates a bucket's kind and/or metadata.

Syntax

ANSI (Cross Platform)
int UpdateBucket(const char* lpszBucketId, const char* lpszNewKind, int bNewMetadata);

Unicode (Windows)
INT UpdateBucket(LPCWSTR lpszBucketId, LPCWSTR lpszNewKind, BOOL bNewMetadata);
int cloudstorage_backblazeb2_updatebucket(void* lpObj, const char* lpszBucketId, const char* lpszNewKind, int bNewMetadata);
int UpdateBucket(const QString& qsBucketId, const QString& qsNewKind, bool bNewMetadata);

Remarks

This method updates the kind and/or metadata of the bucket specified by BucketId.

If NewKind is non-empty, it must be allPrivate or allPublic. If NewKind is empty, the bucket's kind remains unchanged.

If NewMetadata is true, the bucket's current metadata items are replaced with those in the Metadata properties (or cleared, if said properties are empty). If NewMetadata is false, the bucket's current metadata remains unchanged. Keep in mind that the server enforces a limit of 10 metadata items per bucket.

If NewKind is empty and NewMetadata is false, this method does nothing.

The IfRevision setting can optionally be set before calling this method to ensure that the requested changes are only made if the bucket's current revision matches the given one.

The currently-authenticated application key must have the writeBuckets capability to call this method successfully, otherwise the server will return an error. Refer to the Capabilities field for more information.

Error Handling (C++)

This method returns a result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message. (Note: This method's result code can also be obtained by calling the GetLastErrorCode() method after it returns.)

UploadFile Method (BackblazeB2 Class)

Uploads a file.

Syntax

ANSI (Cross Platform)
char* UploadFile(const char* lpszBucketId, const char* lpszFileName);

Unicode (Windows)
LPWSTR UploadFile(LPCWSTR lpszBucketId, LPCWSTR lpszFileName);
char* cloudstorage_backblazeb2_uploadfile(void* lpObj, const char* lpszBucketId, const char* lpszFileName);
QString UploadFile(const QString& qsBucketId, const QString& qsFileName);

Remarks

This method uploads a new file named FileName to the bucket specified by BucketId, and returns the Id of the newly-created file.

The value passed for FileName must comply with the following restrictions:

  • Cannot contain non-printable or DEL characters (i.e., character codes below 32 or equal to 127, respectively).
  • Cannot contain backslashes (\).
  • Cannot begin or end with a slash (/), and cannot contain two subsequent slashes (//).
  • No segment (i.e., a part between slashes) can be more than 250 bytes long (when UTF-8 encoded).
  • The overall string can be no more than 1024 bytes long overall (when UTF-8 encoded).

If a file with the specified FileName already exists in the destination bucket, a new version of it is created.

The following information is also included in the request, and will be applied to the newly-created file:

  • All metadata items present in the Metadata properties. Keep in mind that the server enforces a limit of 10 metadata items per file.
  • If the ClientModifiedTime configuration setting is non-empty: an additional metadata item with its value (which does count towards the 10 item limit).
  • The value of the ContentType property.

If SetUploadStream has been used to set an upload stream, it will take priority as the data source. If LocalFile is set the file will be uploaded from the specified path. If LocalFile is not set the data in FileData will be used.

To encrypt the file before uploading it, set EncryptionAlgorithm and EncryptionPassword.

The currently-authenticated application key must have the writeFiles capability to call this method successfully, otherwise the server will return an error. Refer to the Capabilities field for more information.

Automatic Multipart Uploads

If more than SimpleUploadLimit bytes of data are provided, the class will automatically perform a multipart upload by splitting the data up into parts (sized according to the FragmentSize configuration setting) and uploading them individually. To accomplish this, the class automatically makes calls to StartMultipartUpload, UploadPart, and CompleteMultipartUpload internally; tracks upload state information using the ResumableUploadState configuration setting; and tracks how much data has been uploaded using the StartByte property. The FragmentComplete event will fire after each part is uploaded.

If, during an automatic multipart upload, any individual request fails, the upload can be resumed be calling this method again with the same parameters, so long as ResumableUploadState and StartByte contain the same values as they did when the upload was interrupted.

When an automatic multipart upload completes successfully, ResumableUploadState is cleared and StartByte is reset to 0.

Error Handling (C++)

This method returns a String value; after it returns, call the GetLastErrorCode() method to obtain its result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message.

UploadPart Method (BackblazeB2 Class)

Uploads a multipart upload part.

Syntax

ANSI (Cross Platform)
int UploadPart(const char* lpszMultipartFileId, int iPartNumber);

Unicode (Windows)
INT UploadPart(LPCWSTR lpszMultipartFileId, INT iPartNumber);
int cloudstorage_backblazeb2_uploadpart(void* lpObj, const char* lpszMultipartFileId, int iPartNumber);
int UploadPart(const QString& qsMultipartFileId, int iPartNumber);

Remarks

This method uploads a new part for the multipart file upload specified by MultipartFileId. The part's number is specified by PartNumber; it must be a value in the range 1 to 10000, inclusive. If the specified multipart upload already has a part with the given PartNumber, it is replaced with the one created by this request.

The data to upload is taken from either the stream set using SetUploadStream, LocalFile, or FileData (whichever data is found in first, when checked in that order). All parts must be between 5MB and 5GB in size (except for the last part, which can be as small as 1 byte).

The currently-authenticated application key must have the writeFiles capability to call this method successfully, otherwise the server will return an error. Refer to the Capabilities field for more information.

Error Handling (C++)

This method returns a result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message. (Note: This method's result code can also be obtained by calling the GetLastErrorCode() method after it returns.)

AppKeyList Event (BackblazeB2 Class)

Fires once for each application key returned when listing application keys.

Syntax

ANSI (Cross Platform)
virtual int FireAppKeyList(BackblazeB2AppKeyListEventParams *e);
typedef struct {
const char *KeyId;
const char *KeyName;
const char *Capabilities;
const char *AllowedBucketId;
const char *AllowedPrefix;
int64 ExpirationTime; int reserved; } BackblazeB2AppKeyListEventParams;
Unicode (Windows) virtual INT FireAppKeyList(BackblazeB2AppKeyListEventParams *e);
typedef struct {
LPCWSTR KeyId;
LPCWSTR KeyName;
LPCWSTR Capabilities;
LPCWSTR AllowedBucketId;
LPCWSTR AllowedPrefix;
LONG64 ExpirationTime; INT reserved; } BackblazeB2AppKeyListEventParams;
#define EID_BACKBLAZEB2_APPKEYLIST 1

virtual INT CLOUDSTORAGE_CALL FireAppKeyList(LPSTR &lpszKeyId, LPSTR &lpszKeyName, LPSTR &lpszCapabilities, LPSTR &lpszAllowedBucketId, LPSTR &lpszAllowedPrefix, LONG64 &lExpirationTime);
class BackblazeB2AppKeyListEventParams {
public:
  const QString &KeyId();

  const QString &KeyName();

  const QString &Capabilities();

  const QString &AllowedBucketId();

  const QString &AllowedPrefix();

  qint64 ExpirationTime();

  int EventRetVal();
  void SetEventRetVal(int iRetVal);
};
// To handle, connect one or more slots to this signal. void AppKeyList(BackblazeB2AppKeyListEventParams *e);
// Or, subclass BackblazeB2 and override this emitter function. virtual int FireAppKeyList(BackblazeB2AppKeyListEventParams *e) {...}

Remarks

This event fires once for each application key returned when ListAppKeys is called.

KeyId reflects the unique Id of the application key.

KeyName reflects the name that was given to the application key when it was created.

Capabilities reflects the capabilities that the application key has. It is formatted as a comma-separated list of one or more of the following:

AllowedBucketId reflects the Id of the bucket that the application key is restricted to. It will be empty if the application key is not restricted to any specific bucket.

AllowedPrefix reflects the file name prefix that the application key is restricted to. It will be empty if the application key is not restricted to a specific file name prefix.

ExpirationTime reflects the expiration time of the application key, in milliseconds relative to the Unix epoch. It will be -1 if the application key does not expire.

BucketList Event (BackblazeB2 Class)

Fires once for each bucket returned when listing buckets.

Syntax

ANSI (Cross Platform)
virtual int FireBucketList(BackblazeB2BucketListEventParams *e);
typedef struct {
const char *Id;
const char *Name;
const char *Kind;
int64 Revision; int reserved; } BackblazeB2BucketListEventParams;
Unicode (Windows) virtual INT FireBucketList(BackblazeB2BucketListEventParams *e);
typedef struct {
LPCWSTR Id;
LPCWSTR Name;
LPCWSTR Kind;
LONG64 Revision; INT reserved; } BackblazeB2BucketListEventParams;
#define EID_BACKBLAZEB2_BUCKETLIST 2

virtual INT CLOUDSTORAGE_CALL FireBucketList(LPSTR &lpszId, LPSTR &lpszName, LPSTR &lpszKind, LONG64 &lRevision);
class BackblazeB2BucketListEventParams {
public:
  const QString &Id();

  const QString &Name();

  const QString &Kind();

  qint64 Revision();

  int EventRetVal();
  void SetEventRetVal(int iRetVal);
};
// To handle, connect one or more slots to this signal. void BucketList(BackblazeB2BucketListEventParams *e);
// Or, subclass BackblazeB2 and override this emitter function. virtual int FireBucketList(BackblazeB2BucketListEventParams *e) {...}

Remarks

This event fires once for each bucket returned when ListBuckets is called.

Id reflects the unique Id of the bucket.

Name reflects the name of the bucket.

Kind reflects the bucket's kind. Possible values are allPublic, allPrivate, or snapshot.

Revision reflects the bucket's revision number. A bucket's revision number is updated every time the bucket is modified.

EndTransfer Event (BackblazeB2 Class)

This event fires when a document finishes transferring.

Syntax

ANSI (Cross Platform)
virtual int FireEndTransfer(BackblazeB2EndTransferEventParams *e);
typedef struct {
int Direction; int reserved; } BackblazeB2EndTransferEventParams;
Unicode (Windows) virtual INT FireEndTransfer(BackblazeB2EndTransferEventParams *e);
typedef struct {
INT Direction; INT reserved; } BackblazeB2EndTransferEventParams;
#define EID_BACKBLAZEB2_ENDTRANSFER 3

virtual INT CLOUDSTORAGE_CALL FireEndTransfer(INT &iDirection);
class BackblazeB2EndTransferEventParams {
public:
  int Direction();

  int EventRetVal();
  void SetEventRetVal(int iRetVal);
};
// To handle, connect one or more slots to this signal. void EndTransfer(BackblazeB2EndTransferEventParams *e);
// Or, subclass BackblazeB2 and override this emitter function. virtual int FireEndTransfer(BackblazeB2EndTransferEventParams *e) {...}

Remarks

The EndTransfer event is fired when the document text finishes transferring from the server to the local host.

The Direction parameter shows whether the client (0) or the server (1) is sending the data.

Error Event (BackblazeB2 Class)

Fired when information is available about errors during data delivery.

Syntax

ANSI (Cross Platform)
virtual int FireError(BackblazeB2ErrorEventParams *e);
typedef struct {
int ErrorCode;
const char *Description; int reserved; } BackblazeB2ErrorEventParams;
Unicode (Windows) virtual INT FireError(BackblazeB2ErrorEventParams *e);
typedef struct {
INT ErrorCode;
LPCWSTR Description; INT reserved; } BackblazeB2ErrorEventParams;
#define EID_BACKBLAZEB2_ERROR 4

virtual INT CLOUDSTORAGE_CALL FireError(INT &iErrorCode, LPSTR &lpszDescription);
class BackblazeB2ErrorEventParams {
public:
  int ErrorCode();

  const QString &Description();

  int EventRetVal();
  void SetEventRetVal(int iRetVal);
};
// To handle, connect one or more slots to this signal. void Error(BackblazeB2ErrorEventParams *e);
// Or, subclass BackblazeB2 and override this emitter function. virtual int FireError(BackblazeB2ErrorEventParams *e) {...}

Remarks

The Error event is fired in case of exceptional conditions during message processing. Normally the class fails with an error.

The ErrorCode parameter contains an error code, and the Description parameter contains a textual description of the error. For a list of valid error codes and their descriptions, please refer to the Error Codes section.

FileList Event (BackblazeB2 Class)

Fires once for each file returned when listing files.

Syntax

ANSI (Cross Platform)
virtual int FireFileList(BackblazeB2FileListEventParams *e);
typedef struct {
const char *Id;
const char *Name;
const char *BucketId;
int64 Size;
const char *ContentType;
int64 CreatedTime;
int64 ModifiedTime;
const char *Kind;
const char *SHA1Hash; int reserved; } BackblazeB2FileListEventParams;
Unicode (Windows) virtual INT FireFileList(BackblazeB2FileListEventParams *e);
typedef struct {
LPCWSTR Id;
LPCWSTR Name;
LPCWSTR BucketId;
LONG64 Size;
LPCWSTR ContentType;
LONG64 CreatedTime;
LONG64 ModifiedTime;
LPCWSTR Kind;
LPCWSTR SHA1Hash; INT reserved; } BackblazeB2FileListEventParams;
#define EID_BACKBLAZEB2_FILELIST 5

virtual INT CLOUDSTORAGE_CALL FireFileList(LPSTR &lpszId, LPSTR &lpszName, LPSTR &lpszBucketId, LONG64 &lSize, LPSTR &lpszContentType, LONG64 &lCreatedTime, LONG64 &lModifiedTime, LPSTR &lpszKind, LPSTR &lpszSHA1Hash);
class BackblazeB2FileListEventParams {
public:
  const QString &Id();

  const QString &Name();

  const QString &BucketId();

  qint64 Size();

  const QString &ContentType();

  qint64 CreatedTime();

  qint64 ModifiedTime();

  const QString &Kind();

  const QString &SHA1Hash();

  int EventRetVal();
  void SetEventRetVal(int iRetVal);
};
// To handle, connect one or more slots to this signal. void FileList(BackblazeB2FileListEventParams *e);
// Or, subclass BackblazeB2 and override this emitter function. virtual int FireFileList(BackblazeB2FileListEventParams *e) {...}

Remarks

This event fires once for each file returned when ListFiles, ListFileVersions, or ListMultipartUploads is called.

Id reflects the Id of the file. Always empty when Kind is folder.

Name reflects the name of the file.

BucketId reflects the Id of the bucket that the file is in.

Size reflects the size of the file, in bytes. Always 0 when Kind is folder, hide, or start.

ContentType reflects the content type of the file. Always application/x-bz-hide-marker when Kind is hide; and empty when Kind is folder.

CreatedTime reflects the file's creation time, in milliseconds relative to the Unix epoch. Always 0 when Kind is folder.

ModifiedTime reflects the file's last modified time, in milliseconds relative to the Unix epoch. (Note that this parameter will only be populated if a src_last_modified_millis metadata item is included for the file, and if that metadata item's value can be parsed as a 64-bit integer; otherwise, it will be -1. Refer to the ClientModifiedTime configuration setting for more information.)

Kind reflects the file's kind. Possible values are:

folder A "folder" (only applicable when listing files with a Delimiter).
hide A hide marker file version created by HideFile.
start A multipart file upload that has not been completed or abandoned yet.
upload An file that has been uploaded (either directly, or via a multipart upload).

SHA1Hash reflects a hex-encoded SHA1 hash of the file's contents, or empty string if such a hash is not available. Always empty when Kind is folder or hide.

FragmentComplete Event (BackblazeB2 Class)

Fires after each part in an automatic multipart upload is complete.

Syntax

ANSI (Cross Platform)
virtual int FireFragmentComplete(BackblazeB2FragmentCompleteEventParams *e);
typedef struct {
int FragmentNumber;
int FragmentCount;
int Interrupt; int reserved; } BackblazeB2FragmentCompleteEventParams;
Unicode (Windows) virtual INT FireFragmentComplete(BackblazeB2FragmentCompleteEventParams *e);
typedef struct {
INT FragmentNumber;
INT FragmentCount;
BOOL Interrupt; INT reserved; } BackblazeB2FragmentCompleteEventParams;
#define EID_BACKBLAZEB2_FRAGMENTCOMPLETE 6

virtual INT CLOUDSTORAGE_CALL FireFragmentComplete(INT &iFragmentNumber, INT &iFragmentCount, BOOL &bInterrupt);
class BackblazeB2FragmentCompleteEventParams {
public:
  int FragmentNumber();

  int FragmentCount();

  bool Interrupt();
  void SetInterrupt(bool bInterrupt);

  int EventRetVal();
  void SetEventRetVal(int iRetVal);
};
// To handle, connect one or more slots to this signal. void FragmentComplete(BackblazeB2FragmentCompleteEventParams *e);
// Or, subclass BackblazeB2 and override this emitter function. virtual int FireFragmentComplete(BackblazeB2FragmentCompleteEventParams *e) {...}

Remarks

If, when UploadFile is called, more than SimpleUploadLimit bytes of upload data are present, the class will automatically split the upload data up into parts and perform a multipart upload. During the overall upload process, this event will fire after each part is uploaded, providing an indication of overall upload progress.

FragmentNumber is the number of the current part that has completed. This value starts at 1.

FragmentCount is the total number of parts that will be uploaded.

Interrupt can be set to true to interrupt the upload. The upload may be resumed later.

Refer to UploadFile for more information.

Header Event (BackblazeB2 Class)

Fired every time a header line comes in.

Syntax

ANSI (Cross Platform)
virtual int FireHeader(BackblazeB2HeaderEventParams *e);
typedef struct {
const char *Field;
const char *Value; int reserved; } BackblazeB2HeaderEventParams;
Unicode (Windows) virtual INT FireHeader(BackblazeB2HeaderEventParams *e);
typedef struct {
LPCWSTR Field;
LPCWSTR Value; INT reserved; } BackblazeB2HeaderEventParams;
#define EID_BACKBLAZEB2_HEADER 7

virtual INT CLOUDSTORAGE_CALL FireHeader(LPSTR &lpszField, LPSTR &lpszValue);
class BackblazeB2HeaderEventParams {
public:
  const QString &Field();

  const QString &Value();

  int EventRetVal();
  void SetEventRetVal(int iRetVal);
};
// To handle, connect one or more slots to this signal. void Header(BackblazeB2HeaderEventParams *e);
// Or, subclass BackblazeB2 and override this emitter function. virtual int FireHeader(BackblazeB2HeaderEventParams *e) {...}

Remarks

The Field parameter contains the name of the HTTP header (which is the same as it is delivered). The Value parameter contains the header contents.

If the header line being retrieved is a continuation header line, then the Field parameter contains "" (empty string).

Log Event (BackblazeB2 Class)

Fired once for each log message.

Syntax

ANSI (Cross Platform)
virtual int FireLog(BackblazeB2LogEventParams *e);
typedef struct {
int LogLevel;
const char *Message;
const char *LogType; int reserved; } BackblazeB2LogEventParams;
Unicode (Windows) virtual INT FireLog(BackblazeB2LogEventParams *e);
typedef struct {
INT LogLevel;
LPCWSTR Message;
LPCWSTR LogType; INT reserved; } BackblazeB2LogEventParams;
#define EID_BACKBLAZEB2_LOG 8

virtual INT CLOUDSTORAGE_CALL FireLog(INT &iLogLevel, LPSTR &lpszMessage, LPSTR &lpszLogType);
class BackblazeB2LogEventParams {
public:
  int LogLevel();

  const QString &Message();

  const QString &LogType();

  int EventRetVal();
  void SetEventRetVal(int iRetVal);
};
// To handle, connect one or more slots to this signal. void Log(BackblazeB2LogEventParams *e);
// Or, subclass BackblazeB2 and override this emitter function. virtual int FireLog(BackblazeB2LogEventParams *e) {...}

Remarks

This event is fired once for each log message generated by the class. The verbosity is controlled by the LogLevel setting.

LogLevel indicates the level of message. Possible values are as follows:

0 (None) No events are logged.
1 (Info - default) Informational events are logged.
2 (Verbose) Detailed data are logged.
3 (Debug) Debug data are logged.

The value 1 (Info) logs basic information, including the URL, HTTP version, and status details.

The value 2 (Verbose) logs additional information about the request and response.

The value 3 (Debug) logs the headers and body for both the request and response, as well as additional debug information (if any).

Message is the log entry.

LogType identifies the type of log entry. Possible values are as follows:

  • "Info"
  • "RequestHeaders"
  • "ResponseHeaders"
  • "RequestBody"
  • "ResponseBody"
  • "ProxyRequest"
  • "ProxyResponse"
  • "FirewallRequest"
  • "FirewallResponse"

MetadataList Event (BackblazeB2 Class)

Fires once for each metadata item returned when bucket or file information and metadata is retrieved.

Syntax

ANSI (Cross Platform)
virtual int FireMetadataList(BackblazeB2MetadataListEventParams *e);
typedef struct {
const char *BucketId;
const char *FileId;
const char *Name;
const char *Value; int reserved; } BackblazeB2MetadataListEventParams;
Unicode (Windows) virtual INT FireMetadataList(BackblazeB2MetadataListEventParams *e);
typedef struct {
LPCWSTR BucketId;
LPCWSTR FileId;
LPCWSTR Name;
LPCWSTR Value; INT reserved; } BackblazeB2MetadataListEventParams;
#define EID_BACKBLAZEB2_METADATALIST 9

virtual INT CLOUDSTORAGE_CALL FireMetadataList(LPSTR &lpszBucketId, LPSTR &lpszFileId, LPSTR &lpszName, LPSTR &lpszValue);
class BackblazeB2MetadataListEventParams {
public:
  const QString &BucketId();

  const QString &FileId();

  const QString &Name();

  const QString &Value();

  int EventRetVal();
  void SetEventRetVal(int iRetVal);
};
// To handle, connect one or more slots to this signal. void MetadataList(BackblazeB2MetadataListEventParams *e);
// Or, subclass BackblazeB2 and override this emitter function. virtual int FireMetadataList(BackblazeB2MetadataListEventParams *e) {...}

Remarks

This event fires once for each metadata item returned when GetBucketInfo or GetFileInfo is called. If the ListWithMetadata configuration setting is enabled, it also fires as metadata for each individual bucket or file is returned when ListBuckets, ListFiles, ListFileVersions, or ListMultipartUploads is called.

BucketId reflects the Id of the bucket that the file is in (if FileId is non-empty), or that the metadata item is associated with (if FileId is empty).

FileId, if non-empty, reflects the Id of the file that the metadata item is associated with.

Name reflects the name of the metadata item.

Value reflects the value of the metadata item.

PartList Event (BackblazeB2 Class)

Fires once for each part returned when listing a multipart upload's parts.

Syntax

ANSI (Cross Platform)
virtual int FirePartList(BackblazeB2PartListEventParams *e);
typedef struct {
int PartNumber;
const char *MultipartFileId;
int64 Size;
int64 CreatedTime;
const char *SHA1Hash; int reserved; } BackblazeB2PartListEventParams;
Unicode (Windows) virtual INT FirePartList(BackblazeB2PartListEventParams *e);
typedef struct {
INT PartNumber;
LPCWSTR MultipartFileId;
LONG64 Size;
LONG64 CreatedTime;
LPCWSTR SHA1Hash; INT reserved; } BackblazeB2PartListEventParams;
#define EID_BACKBLAZEB2_PARTLIST 10

virtual INT CLOUDSTORAGE_CALL FirePartList(INT &iPartNumber, LPSTR &lpszMultipartFileId, LONG64 &lSize, LONG64 &lCreatedTime, LPSTR &lpszSHA1Hash);
class BackblazeB2PartListEventParams {
public:
  int PartNumber();

  const QString &MultipartFileId();

  qint64 Size();

  qint64 CreatedTime();

  const QString &SHA1Hash();

  int EventRetVal();
  void SetEventRetVal(int iRetVal);
};
// To handle, connect one or more slots to this signal. void PartList(BackblazeB2PartListEventParams *e);
// Or, subclass BackblazeB2 and override this emitter function. virtual int FirePartList(BackblazeB2PartListEventParams *e) {...}

Remarks

This event fires once for each part returned when ListParts is called.

PartNumber reflects the part's number.

MultipartFileId reflects the Id of the multipart file upload that the part is a part of.

Size reflects the size of the part, in bytes.

CreatedTime reflects the part's creation time (i.e., upload time), in milliseconds relative to the Unix epoch.

SHA1Hash reflects a hex-encoded SHA1 hash of the part's contents.

Progress Event (BackblazeB2 Class)

Fires during an upload or download to indicate transfer progress.

Syntax

ANSI (Cross Platform)
virtual int FireProgress(BackblazeB2ProgressEventParams *e);
typedef struct {
int Direction;
int64 BytesTransferred;
int64 TotalBytes;
int PercentDone; int reserved; } BackblazeB2ProgressEventParams;
Unicode (Windows) virtual INT FireProgress(BackblazeB2ProgressEventParams *e);
typedef struct {
INT Direction;
LONG64 BytesTransferred;
LONG64 TotalBytes;
INT PercentDone; INT reserved; } BackblazeB2ProgressEventParams;
#define EID_BACKBLAZEB2_PROGRESS 11

virtual INT CLOUDSTORAGE_CALL FireProgress(INT &iDirection, LONG64 &lBytesTransferred, LONG64 &lTotalBytes, INT &iPercentDone);
class BackblazeB2ProgressEventParams {
public:
  int Direction();

  qint64 BytesTransferred();

  qint64 TotalBytes();

  int PercentDone();

  int EventRetVal();
  void SetEventRetVal(int iRetVal);
};
// To handle, connect one or more slots to this signal. void Progress(BackblazeB2ProgressEventParams *e);
// Or, subclass BackblazeB2 and override this emitter function. virtual int FireProgress(BackblazeB2ProgressEventParams *e) {...}

Remarks

This event fires during an upload or download to indicate the progress of the transfer of the entire request. By default, this event will fire each time PercentDone increases by one percent; the ProgressStep configuration setting can be used to alter this behavior.

Direction indicates whether the transfer is an upload (0) or a download (1).

BytesTransferred reflects the number of bytes that have been transferred so far, or 0 if the transfer is starting (however, see note below).

TotalBytes reflects the total number of bytes that are to be transferred, or -1 if the total is unknown. This amount includes the size of everything in the request like HTTP headers.

PercentDone reflects the overall progress of the transfer, or -1 if the progress cannot be calculated.

Note: By default, the class tracks transfer progress absolutely. If a transfer is interrupted and later resumed, the values reported by this event upon and after resumption will account for the data that was transferred before the interruption.

For example, if 10MB of data was successfully transferred before the interruption, then this event will fire with a BytesTransferred value of 10485760 (10MB) when the transfer is first resumed, and then continue to fire with successively greater values as usual.

This behavior can be changed by disabling the ProgressAbsolute configuration setting, in which case the class will treat resumed transfers as "new" transfers. In this case, the BytesTransferred parameter will always be 0 the first time this event fires, regardless of whether the transfer is new or being resumed.

SSLServerAuthentication Event (BackblazeB2 Class)

Fired after the server presents its certificate to the client.

Syntax

ANSI (Cross Platform)
virtual int FireSSLServerAuthentication(BackblazeB2SSLServerAuthenticationEventParams *e);
typedef struct {
const char *CertEncoded; int lenCertEncoded;
const char *CertSubject;
const char *CertIssuer;
const char *Status;
int Accept; int reserved; } BackblazeB2SSLServerAuthenticationEventParams;
Unicode (Windows) virtual INT FireSSLServerAuthentication(BackblazeB2SSLServerAuthenticationEventParams *e);
typedef struct {
LPCSTR CertEncoded; INT lenCertEncoded;
LPCWSTR CertSubject;
LPCWSTR CertIssuer;
LPCWSTR Status;
BOOL Accept; INT reserved; } BackblazeB2SSLServerAuthenticationEventParams;
#define EID_BACKBLAZEB2_SSLSERVERAUTHENTICATION 12

virtual INT CLOUDSTORAGE_CALL FireSSLServerAuthentication(LPSTR &lpCertEncoded, INT &lenCertEncoded, LPSTR &lpszCertSubject, LPSTR &lpszCertIssuer, LPSTR &lpszStatus, BOOL &bAccept);
class BackblazeB2SSLServerAuthenticationEventParams {
public:
  const QByteArray &CertEncoded();

  const QString &CertSubject();

  const QString &CertIssuer();

  const QString &Status();

  bool Accept();
  void SetAccept(bool bAccept);

  int EventRetVal();
  void SetEventRetVal(int iRetVal);
};
// To handle, connect one or more slots to this signal. void SSLServerAuthentication(BackblazeB2SSLServerAuthenticationEventParams *e);
// Or, subclass BackblazeB2 and override this emitter function. virtual int FireSSLServerAuthentication(BackblazeB2SSLServerAuthenticationEventParams *e) {...}

Remarks

During this event, the client can decide whether or not to continue with the connection process. The Accept parameter is a recommendation on whether to continue or close the connection. This is just a suggestion: application software must use its own logic to determine whether or not to continue.

When Accept is False, Status shows why the verification failed (otherwise, Status contains the string OK). If it is decided to continue, you can override and accept the certificate by setting the Accept parameter to True.

SSLStatus Event (BackblazeB2 Class)

Fired when secure connection progress messages are available.

Syntax

ANSI (Cross Platform)
virtual int FireSSLStatus(BackblazeB2SSLStatusEventParams *e);
typedef struct {
const char *Message; int reserved; } BackblazeB2SSLStatusEventParams;
Unicode (Windows) virtual INT FireSSLStatus(BackblazeB2SSLStatusEventParams *e);
typedef struct {
LPCWSTR Message; INT reserved; } BackblazeB2SSLStatusEventParams;
#define EID_BACKBLAZEB2_SSLSTATUS 13

virtual INT CLOUDSTORAGE_CALL FireSSLStatus(LPSTR &lpszMessage);
class BackblazeB2SSLStatusEventParams {
public:
  const QString &Message();

  int EventRetVal();
  void SetEventRetVal(int iRetVal);
};
// To handle, connect one or more slots to this signal. void SSLStatus(BackblazeB2SSLStatusEventParams *e);
// Or, subclass BackblazeB2 and override this emitter function. virtual int FireSSLStatus(BackblazeB2SSLStatusEventParams *e) {...}

Remarks

The event is fired for informational and logging purposes only. This event tracks the progress of the connection.

StartTransfer Event (BackblazeB2 Class)

This event fires when a document starts transferring (after the headers).

Syntax

ANSI (Cross Platform)
virtual int FireStartTransfer(BackblazeB2StartTransferEventParams *e);
typedef struct {
int Direction; int reserved; } BackblazeB2StartTransferEventParams;
Unicode (Windows) virtual INT FireStartTransfer(BackblazeB2StartTransferEventParams *e);
typedef struct {
INT Direction; INT reserved; } BackblazeB2StartTransferEventParams;
#define EID_BACKBLAZEB2_STARTTRANSFER 14

virtual INT CLOUDSTORAGE_CALL FireStartTransfer(INT &iDirection);
class BackblazeB2StartTransferEventParams {
public:
  int Direction();

  int EventRetVal();
  void SetEventRetVal(int iRetVal);
};
// To handle, connect one or more slots to this signal. void StartTransfer(BackblazeB2StartTransferEventParams *e);
// Or, subclass BackblazeB2 and override this emitter function. virtual int FireStartTransfer(BackblazeB2StartTransferEventParams *e) {...}

Remarks

The StartTransfer event is fired when the document text starts transferring from the server to the local host.

The Direction parameter shows whether the client (0) or the server (1) is sending the data.

Transfer Event (BackblazeB2 Class)

Fired while a document transfers (delivers document).

Syntax

ANSI (Cross Platform)
virtual int FireTransfer(BackblazeB2TransferEventParams *e);
typedef struct {
int Direction;
int64 BytesTransferred;
int PercentDone;
const char *Text; int lenText; int reserved; } BackblazeB2TransferEventParams;
Unicode (Windows) virtual INT FireTransfer(BackblazeB2TransferEventParams *e);
typedef struct {
INT Direction;
LONG64 BytesTransferred;
INT PercentDone;
LPCSTR Text; INT lenText; INT reserved; } BackblazeB2TransferEventParams;
#define EID_BACKBLAZEB2_TRANSFER 15

virtual INT CLOUDSTORAGE_CALL FireTransfer(INT &iDirection, LONG64 &lBytesTransferred, INT &iPercentDone, LPSTR &lpText, INT &lenText);
class BackblazeB2TransferEventParams {
public:
  int Direction();

  qint64 BytesTransferred();

  int PercentDone();

  const QByteArray &Text();

  int EventRetVal();
  void SetEventRetVal(int iRetVal);
};
// To handle, connect one or more slots to this signal. void Transfer(BackblazeB2TransferEventParams *e);
// Or, subclass BackblazeB2 and override this emitter function. virtual int FireTransfer(BackblazeB2TransferEventParams *e) {...}

Remarks

The Text parameter contains the portion of the document text being received. It is empty if data are being posted to the server.

The BytesTransferred parameter contains the number of bytes transferred in this Direction since the beginning of the document text (excluding HTTP response headers).

The Direction parameter shows whether the client (0) or the server (1) is sending the data.

The PercentDone parameter shows the progress of the transfer in the corresponding direction. If PercentDone can not be calculated the value will be -1.

Note: Events are not re-entrant. Performing time-consuming operations within this event will prevent it from firing again in a timely manner and may affect overall performance.

B2Account Type

Backblaze B2 account information.

Syntax

CloudStorageB2Account (declared in cloudstorage.h)

Remarks

This type provides information about a Backblaze B2 account and the currently-authenticated application key.

The following fields are available:

Fields

AccountId
char* (read-only)

Default Value: ""

The Id of the account.

This field reflects the Id of the account that the currently-authenticated application key belongs to.

AllowedBucketId
char* (read-only)

Default Value: ""

The Id of the bucket that the application key is restricted to.

This field reflects the Id of the bucket that the currently-authenticated application key is restricted to. It will be empty if the currently-authenticated application key is not restricted to any specific bucket.

AllowedBucketName
char* (read-only)

Default Value: ""

The name of the bucket that the application key is restricted to.

This field reflects the name of the bucket that the currently-authenticated application key is restricted to. It will be empty if the currently-authenticated application key is not restricted to any specific bucket; or if it is, but the bucket has been deleted (AllowedBucketId will still be populated in this case).

AllowedPrefix
char* (read-only)

Default Value: ""

The file name prefix that the application key is restricted to.

This field reflects the file name prefix that the currently-authenticated application key is restricted to. It will be empty if the currently-authenticated application key is not restricted to a specific file name prefix.

AuthToken
char* (read-only)

Default Value: ""

The authorization token that will be used to authorize requests.

This field reflects the actual authorization token that will be used to authorize requests sent to the server. This token is obtained by calling Authorize to authenticate to the server using the current ApplicationKey and ApplicationKeyId values; it is valid for up to 24 hours.

Capabilities
char* (read-only)

Default Value: ""

The capabilities that the application key has.

This field reflects the capabilities that the currently-authenticated application key has. It is formatted as a comma-separated list of one or more of the following strings:

MinPartSize
int64 (read-only)

Default Value: -1

The minimum allowed multipart upload part size.

This field reflects the minimum allowed multipart upload part size, in bytes.

RecPartSize
int64 (read-only)

Default Value: -1

The recommended multipart upload part size.

This field reflects the recommended multipart upload part size, in bytes.

B2AppKey Type

A Backblaze B2 application key.

Syntax

CloudStorageB2AppKey (declared in cloudstorage.h)

Remarks

This type represents a Backblaze B2 application key.

The following fields are available:

Fields

AllowedBucketId
char* (read-only)

Default Value: ""

The Id of the bucket that the application key is restricted to.

This field reflects the Id of the bucket that the application key is restricted to. It will be empty if the application key is not restricted to any specific bucket.

AllowedPrefix
char* (read-only)

Default Value: ""

The file name prefix that the application key is restricted to.

This field reflects the file name prefix that the application key is restricted to. It will be empty if the application key is not restricted to a specific file name prefix.

Capabilities
char* (read-only)

Default Value: ""

The capabilities that the application key has.

This field reflects the capabilities that the application key has. It is formatted as a comma-separated list of one or more of the following:

ExpirationTime
int64 (read-only)

Default Value: -1

The application key's expiration time.

This field reflects the expiration time of the application key, in milliseconds relative to the Unix epoch. It will be -1 if the application key does not expire.

KeyId
char* (read-only)

Default Value: ""

The Id of the application key.

This field reflects the unique Id of the application key.

Name
char* (read-only)

Default Value: ""

The name of the application key.

This field reflects the name assigned to the application key when it was created. Application key names are not used for identification, so there is no requirement for them to be unique.

B2Bucket Type

A Backblaze B2 bucket.

Syntax

CloudStorageB2Bucket (declared in cloudstorage.h)

Remarks

This type represents a Backblaze B2 bucket.

The following fields are available:

Fields

Id
char* (read-only)

Default Value: ""

The Id of the bucket.

This field reflects the unique Id of the bucket.

Kind
char* (read-only)

Default Value: ""

The kind of bucket.

This field reflects the bucket's kind. Possible values are allPublic, allPrivate, or snapshot.

Name
char* (read-only)

Default Value: ""

The name of the bucket.

This field reflects the name of the bucket.

Revision
int64 (read-only)

Default Value: -1

The revision number of the bucket.

This field reflects the bucket's revision number. A bucket's revision number is updated every time the bucket is modified.

B2File Type

A Backblaze B2 file.

Syntax

CloudStorageB2File (declared in cloudstorage.h)

Remarks

This type represents a Backblaze B2 file.

The following fields are available:

Fields

BucketId
char* (read-only)

Default Value: ""

The Id of the bucket that the file is in.

This field reflects the Id of the bucket that the file is in.

ContentType
char* (read-only)

Default Value: ""

The content type of the file.

This field reflects the content type of the file. Always application/x-bz-hide-marker when Kind is hide; and empty when Kind is folder.

CreatedTime
int64 (read-only)

Default Value: -1

The file's creation time.

This field reflects the file's creation time, in milliseconds relative to the Unix epoch. Always 0 when Kind is folder.

Id
char* (read-only)

Default Value: ""

The Id of the file.

This field reflects the Id of the file. Always empty when Kind is folder.

Kind
char* (read-only)

Default Value: ""

The kind of file.

This field reflects the file's kind. Possible values are:

folder A "folder" (only applicable when listing files with a Delimiter).
hide A hide marker file version created by HideFile.
start A multipart file upload that has not been completed or abandoned yet.
upload An file that has been uploaded (either directly, or via a multipart upload).

MD5Hash
char* (read-only)

Default Value: ""

An MD5 hash of the file's contents.

This field reflects a hex-encoded MD5 hash of the file's contents, or empty string if such a hash is not available.

ModifiedTime
int64 (read-only)

Default Value: -1

The file's last modified time.

This field reflects the file's last modified time, in milliseconds relative to the Unix epoch.

Note that this field will only be populated if a src_last_modified_millis metadata item is included for the file, and if that metadata item's value can be parsed as a 64-bit integer; otherwise, it will be -1. Refer to the ClientModifiedTime configuration setting for more information.

Name
char* (read-only)

Default Value: ""

The name of the file.

This field reflects the name of the file.

SHA1Hash
char* (read-only)

Default Value: ""

A SHA1 hash of the file's contents.

This field reflects a hex-encoded SHA1 hash of the file's contents, or empty string if such a hash is not available. Always empty if Kind is folder or hide.

Size
int64 (read-only)

Default Value: 0

The file's size.

This field reflects the file's size, in bytes. Always 0 when Kind is folder, hide, or start.

B2Metadata Type

A Backblaze B2 metadata item.

Syntax

CloudStorageB2Metadata (declared in cloudstorage.h)

Remarks

This type represents a Backblaze B2 metadata item.

The following fields are available:

Fields

Name
char*

Default Value: ""

The name of the metadata item.

This field specifies the name of the metadata item. Metadata item names may be up to 50 characters in length, and must consist solely of letters, numbers, hyphens (-), and underscores (_). The server stores all metadata item names in lowercase.

A metadata item's name cannot start with b2- unless said name is one those explicitly defined by the Backblaze B2 API documentation. Keep in mind that the Value of such a metadata item must comply with the format specified by the Backblaze B2 API documentation as well, otherwise the server will reject it.

Value
char*

Default Value: ""

The value of the metadata item.

This field specifies the value of the metadata item.

Constructors

B2Metadata()
B2Metadata(const char* lpszName, const char* lpszValue)

B2Part Type

A Backblaze B2 multipart upload part.

Syntax

CloudStorageB2Part (declared in cloudstorage.h)

Remarks

This type represents a Backblaze B2 multipart upload part.

The following fields are available:

Fields

CreatedTime
int64 (read-only)

Default Value: -1

The part's creation time.

This field reflects the part's creation time (i.e., upload time), in milliseconds relative to the Unix epoch.

MD5Hash
char* (read-only)

Default Value: ""

An MD5 hash of the part's contents.

This field reflects a hex-encoded MD5 hash of the part's contents, or empty string if such a hash is not available.

PartNumber
int (read-only)

Default Value: -1

The number of the part.

This field specifies the number of the part. Must a be a value in the range 1 to 10000, inclusive.

SHA1Hash
char* (read-only)

Default Value: ""

A SHA1 hash of the part's contents.

This field reflects a hex-encoded SHA1 hash of the part's contents.

Size
int64 (read-only)

Default Value: 0

The part's size.

This field reflects the part's size, in bytes.

Certificate Type

This is the digital certificate being used.

Syntax

CloudStorageCertificate (declared in cloudstorage.h)

Remarks

This type describes the current digital certificate. The certificate may be a public or private key. The fields are used to identify or select certificates.

The following fields are available:

Fields

EffectiveDate
char* (read-only)

Default Value: ""

The date on which this certificate becomes valid. Before this date, it is not valid. The date is localized to the system's time zone. The following example illustrates the format of an encoded date:

23-Jan-2000 15:00:00.

ExpirationDate
char* (read-only)

Default Value: ""

The date on which the certificate expires. After this date, the certificate will no longer be valid. The date is localized to the system's time zone. The following example illustrates the format of an encoded date:

23-Jan-2001 15:00:00.

ExtendedKeyUsage
char* (read-only)

Default Value: ""

A comma-delimited list of extended key usage identifiers. These are the same as ASN.1 object identifiers (OIDs).

Fingerprint
char* (read-only)

Default Value: ""

The hex-encoded, 16-byte MD5 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: bc:2a:72:af:fe:58:17:43:7a:5f:ba:5a:7c:90:f7:02

FingerprintSHA1
char* (read-only)

Default Value: ""

The hex-encoded, 20-byte SHA-1 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: 30:7b:fa:38:65:83:ff:da:b4:4e:07:3f:17:b8:a4:ed:80:be:ff:84

FingerprintSHA256
char* (read-only)

Default Value: ""

The hex-encoded, 32-byte SHA-256 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: 6a:80:5c:33:a9:43:ea:b0:96:12:8a:64:96:30:ef:4a:8a:96:86:ce:f4:c7:be:10:24:8e:2b:60:9e:f3:59:53

Issuer
char* (read-only)

Default Value: ""

The issuer of the certificate. This field contains a string representation of the name of the issuing authority for the certificate.

PrivateKey
char* (read-only)

Default Value: ""

The private key of the certificate (if available). The key is provided as PEM/Base64-encoded data.

Note: The PrivateKey may be available but not exportable. In this case, PrivateKey returns an empty string.

PrivateKeyAvailable
int (read-only)

Default Value: FALSE

Whether a PrivateKey is available for the selected certificate. If PrivateKeyAvailable is True, the certificate may be used for authentication purposes (e.g., server authentication).

PrivateKeyContainer
char* (read-only)

Default Value: ""

The name of the PrivateKey container for the certificate (if available). This functionality is available only on Windows platforms.

PublicKey
char* (read-only)

Default Value: ""

The public key of the certificate. The key is provided as PEM/Base64-encoded data.

PublicKeyAlgorithm
char* (read-only)

Default Value: ""

The textual description of the certificate's public key algorithm. The property contains either the name of the algorithm (e.g., "RSA" or "RSA_DH") or an object identifier (OID) string representing the algorithm.

PublicKeyLength
int (read-only)

Default Value: 0

The length of the certificate's public key (in bits). Common values are 512, 1024, and 2048.

SerialNumber
char* (read-only)

Default Value: ""

The serial number of the certificate encoded as a string. The number is encoded as a series of hexadecimal digits, with each pair representing a byte of the serial number.

SignatureAlgorithm
char* (read-only)

Default Value: ""

The text description of the certificate's signature algorithm. The property contains either the name of the algorithm (e.g., "RSA" or "RSA_MD5RSA") or an object identifier (OID) string representing the algorithm.

Store
char*

Default Value: "MY"

The name of the certificate store for the client certificate.

The StoreType field denotes the type of the certificate store specified by Store. If the store is password-protected, specify the password in StorePassword.

Store is used in conjunction with the Subject field to specify client certificates. If Store has a value, and Subject or Encoded is set, a search for a certificate is initiated. Please see the Subject field for details.

Designations of certificate stores are platform dependent.

The following designations are the most common User and Machine certificate stores in Windows:

MYA certificate store holding personal certificates with their associated private keys.
CACertifying authority certificates.
ROOTRoot certificates.

When the certificate store type is cstPFXFile, this property must be set to the name of the file. When the type is cstPFXBlob, the property must be set to the binary contents of a PFX file (i.e., PKCS#12 certificate store).

StorePassword
char*

Default Value: ""

If the type of certificate store requires a password, this field is used to specify the password needed to open the certificate store.

StoreType
int

Default Value: 0

The type of certificate store for this certificate.

The class supports both public and private keys in a variety of formats. When the cstAuto value is used, the class will automatically determine the type. This field can take one of the following values:

0 (cstUser - default)For Windows, this specifies that the certificate store is a certificate store owned by the current user.

Note: This store type is not available in Java.

1 (cstMachine)For Windows, this specifies that the certificate store is a machine store.

Note: This store type is not available in Java.

2 (cstPFXFile)The certificate store is the name of a PFX (PKCS#12) file containing certificates.
3 (cstPFXBlob)The certificate store is a string (binary or Base64-encoded) representing a certificate store in PFX (PKCS#12) format.
4 (cstJKSFile)The certificate store is the name of a Java Key Store (JKS) file containing certificates.

Note: This store type is only available in Java.

5 (cstJKSBlob)The certificate store is a string (binary or Base64-encoded) representing a certificate store in Java Key Store (JKS) format.

Note: This store type is only available in Java.

6 (cstPEMKeyFile)The certificate store is the name of a PEM-encoded file that contains a private key and an optional certificate.
7 (cstPEMKeyBlob)The certificate store is a string (binary or Base64-encoded) that contains a private key and an optional certificate.
8 (cstPublicKeyFile)The certificate store is the name of a file that contains a PEM- or DER-encoded public key certificate.
9 (cstPublicKeyBlob)The certificate store is a string (binary or Base64-encoded) that contains a PEM- or DER-encoded public key certificate.
10 (cstSSHPublicKeyBlob)The certificate store is a string (binary or Base64-encoded) that contains an SSH-style public key.
11 (cstP7BFile)The certificate store is the name of a PKCS#7 file containing certificates.
12 (cstP7BBlob)The certificate store is a string (binary) representing a certificate store in PKCS#7 format.
13 (cstSSHPublicKeyFile)The certificate store is the name of a file that contains an SSH-style public key.
14 (cstPPKFile)The certificate store is the name of a file that contains a PPK (PuTTY Private Key).
15 (cstPPKBlob)The certificate store is a string (binary) that contains a PPK (PuTTY Private Key).
16 (cstXMLFile)The certificate store is the name of a file that contains a certificate in XML format.
17 (cstXMLBlob)The certificate store is a string that contains a certificate in XML format.
18 (cstJWKFile)The certificate store is the name of a file that contains a JWK (JSON Web Key).
19 (cstJWKBlob)The certificate store is a string that contains a JWK (JSON Web Key).
21 (cstBCFKSFile)The certificate store is the name of a file that contains a BCFKS (Bouncy Castle FIPS Key Store).

Note: This store type is only available in Java and .NET.

22 (cstBCFKSBlob)The certificate store is a string (binary or Base64-encoded) representing a certificate store in BCFKS (Bouncy Castle FIPS Key Store) format.

Note: This store type is only available in Java and .NET.

23 (cstPKCS11)The certificate is present on a physical security key accessible via a PKCS#11 interface.

To use a security key, the necessary data must first be collected using the CERTMGR class. The ListStoreCertificates method may be called after setting CertStoreType to cstPKCS11, CertStorePassword to the PIN, and CertStore to the full path of the PKCS#11 DLL. The certificate information returned in the CertList event's CertEncoded parameter may be saved for later use.

When using a certificate, pass the previously saved security key information as the Store and set StorePassword to the PIN.

Code Example. SSH Authentication with Security Key: certmgr.CertStoreType = CertStoreTypes.cstPKCS11; certmgr.OnCertList += (s, e) => { secKeyBlob = e.CertEncoded; }; certmgr.CertStore = @"C:\Program Files\OpenSC Project\OpenSC\pkcs11\opensc-pkcs11.dll"; certmgr.CertStorePassword = "123456"; //PIN certmgr.ListStoreCertificates(); sftp.SSHCert = new Certificate(CertStoreTypes.cstPKCS11, secKeyBlob, "123456", "*"); sftp.SSHUser = "test"; sftp.SSHLogon("myhost", 22);

99 (cstAuto)The store type is automatically detected from the input data. This setting may be used with both public and private keys and can detect any of the supported formats automatically.

SubjectAltNames
char* (read-only)

Default Value: ""

Comma-separated lists of alternative subject names for the certificate.

ThumbprintMD5
char* (read-only)

Default Value: ""

The MD5 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

ThumbprintSHA1
char* (read-only)

Default Value: ""

The SHA-1 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

ThumbprintSHA256
char* (read-only)

Default Value: ""

The SHA-256 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

Usage
char* (read-only)

Default Value: ""

The text description of UsageFlags.

This value will be one or more of the following strings and will be separated by commas:

  • Digital Signature
  • Non-Repudiation
  • Key Encipherment
  • Data Encipherment
  • Key Agreement
  • Certificate Signing
  • CRL Signing
  • Encipher Only

If the provider is OpenSSL, the value is a comma-separated list of X.509 certificate extension names.

UsageFlags
int (read-only)

Default Value: 0

The flags that show intended use for the certificate. The value of UsageFlags is a combination of the following flags:

0x80Digital Signature
0x40Non-Repudiation
0x20Key Encipherment
0x10Data Encipherment
0x08Key Agreement
0x04Certificate Signing
0x02CRL Signing
0x01Encipher Only

Please see the Usage field for a text representation of UsageFlags.

This functionality currently is not available when the provider is OpenSSL.

Version
char* (read-only)

Default Value: ""

The certificate's version number. The possible values are the strings "V1", "V2", and "V3".

Subject
char*

Default Value: ""

The subject of the certificate used for client authentication.

This property must be set after all other certificate properties are set. When this property is set, a search is performed in the current certificate store to locate a certificate with a matching subject.

If a matching certificate is found, the field is set to the full subject of the matching certificate.

If an exact match is not found, the store is searched for subjects containing the value of the property.

If a match is still not found, the property is set to an empty string, and no certificate is selected.

The special value "*" picks a random certificate in the certificate store.

The certificate subject is a comma-separated list of distinguished name fields and values. For instance, "CN=www.server.com, OU=test, C=US, E=support@nsoftware.com". Common fields and their meanings are as follows:

FieldMeaning
CNCommon Name. This is commonly a hostname like www.server.com.
OOrganization
OUOrganizational Unit
LLocality
SState
CCountry
EEmail Address

If a field value contains a comma, it must be quoted.

Encoded
char*

Default Value: ""

The certificate (PEM/Base64 encoded). This field is used to assign a specific certificate. The Store and Subject fields also may be used to specify a certificate.

When Encoded is set, a search is initiated in the current Store for the private key of the certificate. If the key is found, Subject is updated to reflect the full subject of the selected certificate; otherwise, Subject is set to an empty string.

Constructors

Certificate()

Creates a instance whose properties can be set. This is useful for use with when generating new certificates.

Certificate(const char* lpEncoded, int lenEncoded)

Parses Encoded as an X.509 public key.

Certificate(int iStoreType, const char* lpStore, int lenStore, const char* lpszStorePassword, const char* lpszSubject)

StoreType identifies the type of certificate store to use. See for descriptions of the different certificate stores. Store is a byte array containing the certificate data. StorePassword is the password used to protect the store.

After the store has been successfully opened, the component will attempt to find the certificate identified by Subject . This can be either a complete or a substring match of the X.509 certificate's subject Distinguished Name (DN). The Subject parameter can also take an MD5, SHA-1, or SHA-256 thumbprint of the certificate to load in a "Thumbprint=value" format.

Firewall Type

The firewall the component will connect through.

Syntax

CloudStorageFirewall (declared in cloudstorage.h)

Remarks

When connecting through a firewall, this type is used to specify different properties of the firewall, such as the firewall Host and the FirewallType.

The following fields are available:

Fields

AutoDetect
int

Default Value: FALSE

Whether to automatically detect and use firewall system settings, if available.

FirewallType
int

Default Value: 0

The type of firewall to connect through. The applicable values are as follows:

fwNone (0)No firewall (default setting).
fwTunnel (1)Connect through a tunneling proxy. Port is set to 80.
fwSOCKS4 (2)Connect through a SOCKS4 Proxy. Port is set to 1080.
fwSOCKS5 (3)Connect through a SOCKS5 Proxy. Port is set to 1080.
fwSOCKS4A (10)Connect through a SOCKS4A Proxy. Port is set to 1080.

Host
char*

Default Value: ""

The name or IP address of the firewall (optional). If a Host is given, the requested connections will be authenticated through the specified firewall when connecting.

If this field is set to a Domain Name, a DNS request is initiated. Upon successful termination of the request, this field is set to the corresponding address. If the search is not successful, the class fails with an error.

Password
char*

Default Value: ""

A password if authentication is to be used when connecting through the firewall. If Host is specified, the User and Password fields are used to connect and authenticate to the given firewall. If the authentication fails, the class fails with an error.

Port
int

Default Value: 0

The Transmission Control Protocol (TCP) port for the firewall Host. See the description of the Host field for details.

Note: This field is set automatically when FirewallType is set to a valid value. See the description of the FirewallType field for details.

User
char*

Default Value: ""

A username if authentication is to be used when connecting through a firewall. If Host is specified, this field and the Password field are used to connect and authenticate to the given Firewall. If the authentication fails, the class fails with an error.

Constructors

Firewall()

Header Type

This is an HTTP header as it is received from the server.

Syntax

CloudStorageHeader (declared in cloudstorage.h)

Remarks

When a header is received through a Header event, it is parsed into a Header type. This type contains a Field, and its corresponding Value.

The following fields are available:

Fields

Field
char*

Default Value: ""

This field contains the name of the HTTP Header (this is the same case as it is delivered).

Value
char*

Default Value: ""

This field contains the Header contents.

Constructors

Header()
Header(const char* lpszField, const char* lpszValue)

Proxy Type

The proxy the component will connect to.

Syntax

CloudStorageProxy (declared in cloudstorage.h)

Remarks

When connecting through a proxy, this type is used to specify different properties of the proxy, such as the Server and the AuthScheme.

The following fields are available:

Fields

AuthScheme
int

Default Value: 0

The type of authorization to perform when connecting to the proxy. This is used only when the User and Password fields are set.

AuthScheme should be set to authNone (3) when no authentication is expected.

By default, AuthScheme is authBasic (0), and if the User and Password fields are set, the class will attempt basic authentication.

If AuthScheme is set to authDigest (1), digest authentication will be attempted instead.

If AuthScheme is set to authProprietary (2), then the authorization token will not be generated by the class. Look at the configuration file for the class being used to find more information about manually setting this token.

If AuthScheme is set to authNtlm (4), NTLM authentication will be used.

For security reasons, setting this field will clear the values of User and Password.

AutoDetect
int

Default Value: FALSE

Whether to automatically detect and use proxy system settings, if available. The default value is false.

Password
char*

Default Value: ""

A password if authentication is to be used for the proxy.

If AuthScheme is set to Basic Authentication, the User and Password fields are Base64 encoded and the proxy authentication token will be generated in the form Basic [encoded-user-password].

If AuthScheme is set to Digest Authentication, the User and Password fields are used to respond to the Digest Authentication challenge from the server.

If AuthScheme is set to NTLM Authentication, the User and Password fields are used to authenticate through NTLM negotiation.

Port
int

Default Value: 80

The Transmission Control Protocol (TCP) port for the proxy Server (default 80). See the description of the Server field for details.

Server
char*

Default Value: ""

If a proxy Server is given, then the HTTP request is sent to the proxy instead of the server otherwise specified.

If the Server field is set to a domain name, a DNS request is initiated. Upon successful termination of the request, the Server field is set to the corresponding address. If the search is not successful, an error is returned.

SSL
int

Default Value: 0

When to use a Secure Sockets Layer (SSL) for the connection to the proxy. The applicable values are as follows:

psAutomatic (0)Default setting. If the URL is an https URL, the class will use the psTunnel option. If the URL is an http URL, the class will use the psNever option.
psAlways (1)The connection is always SSL-enabled.
psNever (2)The connection is not SSL-enabled.
psTunnel (3)The connection is made through a tunneling (HTTP) proxy.

User
char*

Default Value: ""

A username if authentication is to be used for the proxy.

If AuthScheme is set to Basic Authentication, the User and Password fields are Base64 encoded and the proxy authentication token will be generated in the form Basic [encoded-user-password].

If AuthScheme is set to Digest Authentication, the User and Password fields are used to respond to the Digest Authentication challenge from the server.

If AuthScheme is set to NTLM Authentication, the User and Password fields are used to authenticate through NTLM negotiation.

Constructors

Proxy()
Proxy(const char* lpszServer, int iPort)
Proxy(const char* lpszServer, int iPort, const char* lpszUser, const char* lpszPassword)

QueryParam Type

A query parameter to send in the request.

Syntax

CloudStorageQueryParam (declared in cloudstorage.h)

Remarks

This type represents a query parameter to send in the request.

The following fields are available:

Fields

Name
char*

Default Value: ""

The name of the query parameter.

This field specifies the name of the query parameter.

Value
char*

Default Value: ""

The value of the query parameter.

This field specifies the value of the query parameter. The class will automatically URL-encode this value when sending the request.

Constructors

QueryParam()
QueryParam(const char* lpszName, const char* lpszValue)

CloudStorageList Type

Syntax

CloudStorageList<T> (declared in cloudstorage.h)

Remarks

CloudStorageList is a generic class that is used to hold a collection of objects of type T, where T is one of the custom types supported by the BackblazeB2 class.

Methods

GetCount This method returns the current size of the collection.

int GetCount() {}

SetCount This method sets the size of the collection. This method returns 0 if setting the size was successful; or -1 if the collection is ReadOnly. When adding additional objects to a collection call this method to specify the new size. Increasing the size of the collection preserves existing objects in the collection.

int SetCount(int count) {}

Get This method gets the item at the specified position. The index parameter specifies the index of the item in the collection. This method returns NULL if an invalid index is specified.

T* Get(int index) {}

Set This method sets the item at the specified position. The index parameter specifies the index of the item in the collection that is being set. This method returns -1 if an invalid index is specified. Note: Objects created using the new operator must be freed using the delete operator; they will not be automatically freed by the class.

T* Set(int index, T* value) {}

CloudStorageStream Type

Syntax

CloudStorageStream (declared in cloudstorage.h)

Remarks

The BackblazeB2 class includes one or more API members that take a stream object as a parameter. To use such API members, create a concrete class that implements the CloudStorageStream interface and pass the BackblazeB2 class an instance of that concrete class.

When implementing the CloudStorageStream interface's properties and methods, they must behave as described below. If the concrete class's implementation does not behave as expected, undefined behavior may occur.

Properties

CanRead Whether the stream supports reading.

bool CanRead() { return true; }
CanSeek Whether the stream supports seeking.

bool CanSeek() { return true; }
CanWrite Whether the stream supports writing.

bool CanWrite() { return true; }
Length Gets the length of the stream, in bytes.

int64 GetLength() = 0;

Methods

Close Closes the stream, releasing all resources currently allocated for it.

void Close() {}

This method is called automatically when a CloudStorageStream object is deleted.

Flush Forces all data held by the stream's buffers to be written out to storage.

int Flush() { return 0; }

Must return 0 if flushing is successful; or -1 if an error occurs or the stream is closed. If the stream does not support writing, this method must do nothing and return 0.

Read Reads a sequence of bytes from the stream and advances the current position within the stream by the number of bytes read.

int Read(void* buffer, int count) = 0;

Buffer specifies the buffer to populate with data from the stream. Count specifies the number of bytes that should be read from the stream.

Must return the total number of bytes read into Buffer; this may be less than Count if that many bytes are not currently available, or 0 if the end of the stream has been reached. Must return -1 if an error occurs, if reading is not supported, or if the stream is closed.

Seek Sets the current position within the stream based on a particular point of origin.

int64 Seek(int64 offset, int seekOrigin) = 0;

Offset specifies the offset in the stream to seek to, relative to SeekOrigin. Valid values for SeekOrigin are:

  • 0: Seek from beginning.
  • 1: Seek from current position.
  • 2: Seek from end.

Must return the new position within the stream; or -1 if an error occurs, if seeking is not supported, or if the stream is closed (however, see note below). If -1 is returned, the current position within the stream must remain unchanged.

Note: If the stream is not closed, it must always be possible to call this method with an Offset of 0 and a SeekOrigin of 1 to obtain the current position within the stream, even if seeking is not otherwise supported.

Write Writes a sequence of bytes to the stream and advances the current position within the stream by the number of bytes written.

int Write(const void* buffer, int count) = 0;

Buffer specifies the buffer with data to write to the stream. Count specifies the number of bytes that should be written to the stream.

Must return the total number of bytes written to the stream; this may be less than Count if that many bytes could not be written. Must return -1 if an error occurs, if writing is not supported, or if the stream is closed.

Config Settings (BackblazeB2 Class)

The class accepts one or more of the following configuration settings. Configuration settings are similar in functionality to properties, but they are rarely used. In order to avoid "polluting" the property namespace of the class, access to these internal properties is provided through the Config method.

BackblazeB2 Config Settings

AccumulatePages:   Whether the class should accumulate subsequent pages of results when listing them.

This setting controls how the class behaves when listing multiple pages of results. If this setting is enabled, each successive page of results will be appended to the appropriate collection properties until the last page of results has been listed (at which point the next list call will cause said collection to be cleared first). If this setting is disabled, the collection will be cleared every time a page of results is returned.

By default, this setting is enabled, allowing all pages of results to be accumulated in the appropriate collection properties.

APIURL:   The base URL used for all except download and upload requests.

After Authorize is called, this setting can be queried to obtain the base URL that the class will use for all further requests (except for download and upload requests).

Note that this setting cannot be changed, it is returned by the server when Authorize is called.

APIVersion:   The Backblaze B2 REST API version being used by the class.

This setting can be queried to obtain the version of the Backblaze B2 REST APIs being used by the class.

Note that this setting cannot be changed.

ClientModifiedTime:   The client-side last modified time.

This setting may be set to a number of milliseconds relative to the Unix epoch before calling UploadFile, StartMultipartUpload, or (if SendMetadataOnCopy is enabled) CopyFile to have the class automatically include a metadata item named src_last_modified_millis with the given value in the request.

This name and value format are the ones recommended by the Backblaze B2 API documentation to allow different clients to interoperate with each other. That said, it is still a normal metadata item as far as the server is concerned; this setting, as well as the ModifiedTime field and the FileList event's ModifiedTime parameter, are provided as a convenience.

If this setting is non-empty when one of the aforementioned methods is called, the class will always add the src_last_modified_millis metadata item to the request before the items in the Metadata properties. Keep in mind that a file cannot have more than 10 metadata items; the class does not enforce this limit, but the server will return an error if it is exceeded.

DownloadAuthToken:   The download authorization token to use.

This setting can be set before calling DownloadFile to have the class use the given download authorization token to authorize the request instead of the general-purpose AuthToken for the currently-authenticated application key.

Using this setting is only necessary when downloading a file that the currently-authenticated application key does not have access to (either due to restrictions on the key, or because the file is owned by someone else's account). If this setting is set, then the DownloadURL typically needs to be set as well (just remember to back up its current value first, and restore that value after the download is finished).

This setting is not applicable to the DownloadFileById method.

DownloadTempFile:   The temporary file used when downloading encrypted data.

This setting specifies the temporary file used when downloading encrypted data.

When downloading encrypted data with LocalFile set, the class will automatically create a temporary file at TempPath to hold the encrypted file contents. When the download is complete, the data is decrypted to LocalFile.

If the download is interrupted, the specified file will hold the partially downloaded encrypted file contents. Before resuming the download, this setting must be set to a valid file containing the partially encrypted file contents. See DownloadFile for details.

DownloadURL:   The base URL used for download requests.

After Authorize is called, this setting can be queried to obtain the base URL that the class will use for downloading files.

This setting's value should not be changed manually unless the DownloadAuthToken setting is being used (in which case the current value should be backed up so that it can be restored later); refer to that setting's documentation for more information.

EncryptionIV:   The initialization vector to be used for encryption/decryption.

When encrypting or decrypting a file, this setting may be set to specify the initialization vector. Normally the class will derive this value automatically from EncryptionPassword.

This setting accepts a hex encoded value.

EncryptionKey:   The key to use during encryption/decryption.

When encrypting or decrypting a file, this setting may be set to specify the key to use. Normally the class will derive this value automatically from EncryptionPassword.

This setting accepts a hex encoded value.

EncryptionPasswordKDF:   The KDF algorithm to use during password based encryption and decryption.

This setting specified the Key Derivation Function (KDF) used to derive a key from the specified EncryptionPassword. Possible values are:

  • 0 (default) - PBKDF1
  • 1 - PBKDF2
Note: PBKDF1 is not FIPS compliant. When operating in FIPS mode PBKDF2 should be used.

FragmentSize:   The part size to use when uploading a new file.

If, when UploadFile is called, more than SimpleUploadLimit bytes of upload data are present, the class will automatically split the upload data into parts and perform a multipart upload. This setting specifies the part size to use.

Valid values are 5242880 (5MB) to 2147483647 (2GB). This setting is automatically set to match the RecPartSize field's value (or 2147483647, whichever is smaller) after the first successful call to Authorize for a particular ApplicationKey/ApplicationKeyId combination. Subsequent calls to Authorize will not change this setting's value unless ApplicationKey and/or ApplicationKeyId has changed, or Reset has been called.

Note that applications may need to increase this setting's value in order to upload very large files; Backblaze B2 only allows 10000 parts to be uploaded for any given multipart upload.

If the amount of upload data present when UploadFile is called is less than SimpleUploadLimit bytes, it will be uploaded directly, so this setting will not apply.

IfRevision:   The revision number that the bucket must currently have in order for a request to succeed.

This setting can be set to a bucket revision number before calling UpdateBucket to ensure that the request will only succeed if the bucket's current revision number matches the given one.

ListWithMetadata:   Whether to include metadata items when listing buckets, files, etc.

This setting indicates whether the class should fire the MetadataList event for the metadata items included with each result returned when ListBuckets, ListFiles, ListFileVersions, or ListMultipartUploads is called. It is disabled by default.

Note that calls to the aforementioned methods will never repopulate the Metadata properties, regardless of this setting's value.

MaxAppKeyResults:   The maximum number of results to return when listing application keys.

This setting specifies the maximum number of results that should be returned by a call to ListAppKeys.

If this setting is -1 (default), the server's default (100) is used. Acceptable values are 1 to 10000 (inclusive).

MaxPartResults:   The maximum number of results to return when listing parts.

This setting specifies the maximum number of results that should be returned by a call to ListParts.

If this setting is -1 (default), the server's default (100) is used. Acceptable values are 1 to 1000 (inclusive).

MaxResults:   The maximum number of results to return when listing files or file versions.

This setting specifies the maximum number of results that should be returned by a call to ListFiles or ListFileVersions.

If this setting is -1 (default), the server's default (100) is used. Acceptable values are 1 to 10000 (inclusive).

ProgressAbsolute:   Whether the class should track transfer progress absolutely.

This setting controls whether the class tracks upload and download progress absolutely or relatively, with regards to the values reported via the Progress event when an interrupted transfer is resumed.

If this setting is enabled (default), then when a transfer is interrupted and later resumed, the values reported by the Progress event will account for the data that was successfully transferred before the interruption.

If this setting is disabled, then the class will treat resumed transfers as "new" transfers, and the values reported by the Progress event will start at 0 rather than from the number of bytes already transferred.

Refer to the Progress event for more information.

ProgressStep:   How often the progress event should be fired, in terms of percentage.

This setting controls how often the class will fire the Progress event during an upload or download, in terms of percentage. Valid values are 0 to 99, inclusive.

The default value, 1, will cause the Progress event to fire each time the event's PercentDone parameter value increases by one percent. Setting this setting to 0 will cause the Progress event to fire every time data is transferred.

Note that the Progress event will always fire once at the beginning and end of a transfer, regardless of this setting's value. Also, if PercentDone cannot be calculated for a particular transfer (e.g., for downloads that use chunked transfer encoding), then the class will behave as if this setting were 0 for the duration of the transfer.

RawRequest:   Returns the data that was sent to the server.

This setting may be queried after calling any method that sends data to the server to obtain the request data that was transmitted. Such data may be useful for troubleshooting purposes.

RawResponse:   Returns the data that was received from the server.

This setting may be queried after calling any method that sends data to the server to obtain the response data that was received. Such data may be useful for troubleshooting purposes.

ResumableUploadState:   Tracks upload state information during an automatic multipart upload.

If, when UploadFile is called, more than SimpleUploadLimit bytes of upload data are present, the class will automatically split the upload data into parts and perform a multipart upload. This setting keeps track of upload state information needed to resume the upload if it's interrupted.

Refer to UploadFile for more information.

SendMetadataOnCopy:   Whether to send metadata items when copying files.

This setting specifies whether the class should include Metadata items, to apply to the destination file, when CopyFile is called.

If this setting is disabled (default), or if this setting is enabled but there are no Metadata items (and ClientModifiedTime is also empty), then the server will copy the source file's current metadata to the destination file.

SimpleUploadLimit:   The maximum data size the class should attempt to upload directly when creating a file.

When UploadFile is called, the class will automatically split the upload data into parts and perform a multipart upload if its size is greater than the amount specified by this setting. If the upload data size is less than or equal to the amount specified by this setting, it will be uploaded directly.

Valid values are -1 to 5368709120 (5GB), inclusive. This setting is automatically set to twice the RecPartSize field's value after the first successful call to Authorize for a particular ApplicationKey/ApplicationKeyId combination. Subsequent calls to Authorize will not change this setting's value unless ApplicationKey and/or ApplicationKeyId has changed, or Reset has been called.

If this setting is set to 0, the class will always perform a multipart upload to create a file; if it is set to -1, the class will never perform a multipart upload.

TempPath:   The path to the directory where temporary files are created.

This setting specifies the path where temporary files are created when downloading encrypted files. If not specified, the system's temporary directory is used. Refer to DownloadTempFile and DownloadFile for more information.

XChildCount:   The number of child elements of the current element.

This configuration settings specifies the number of child attributes of the current element. The XChild configuration settings will be indexed from 0 to (XChildCount - 1).

The current element is specified through the XPath configuration setting. This configuration setting is read-only.

XChildName[i]:   The name of the child element.

This configuration setting provides the name of the i-th child element of the current element.

The current element is specified through the XPath configuration setting. This configuration setting is read-only.

XChildXText[i]:   The inner text of the child element.

This configuration setting provides the inner text of the i-th child element of the current element.

The current element is specified through the XPath configuration setting. This configuration setting is read-only.

XElement:   The name of the current element.

This configuration setting provides the name of the current element.

The current element is specified through the XPath configuration setting. This configuration setting is read-only.

XParent:   The parent of the current element.

This configuration setting provides the parent of the current element.

The current element is specified through the XPath configuration setting. This configuration setting is read-only.

XPath:   Provides a way to point to a specific element in the returned XML or JSON response.

The XPath setting allows you to point to specific elements in the XML or JSON response.

When XPath is set to a valid path, XElement points to the name of the element, with XText, XParent, XSubTree, XChildCount, XChildName[i], and XChildXText[i] providing other properties of the element.

XPath syntax is available for both XML and JSON documents. An XPath is a series of one or more element accessors separated by the / character, for example, /A/B/C/D. An XPath can be absolute (i.e., it starts with /), or it can be relative to the current XPath location.

The following are possible values for an element accessor, which operates relative to the current location specified by the XPath accessors, which proceed it in the overall XPath string:

Accessor Description
name The first element with a particular name. Can be *.
[i] The i-th element.
name[i] The i-th element with a particular name.
[last()] The last element.
[last()-i] The element i before the last element.
name[@attrname="attrvalue"]The first element with a particular name that contains the specified attribute-value pair.

Supports single and double quotes. (XML Only)

. The current element.
.. The parent element.
Note: XPath indices are 1-based.

For example, assume the following XML and JSON responses.

XML:

<firstlevel>
  <one>value</one>
  <two>
    <item>first</item>
    <item>second</item>
  </two>
  <three>value three</three>
</firstlevel>

JSON:

{
  "firstlevel": {
    "one": "value",
    "two": ["first", "second"],
    "three": "value three"
  }
}

The following are examples of valid XPaths for these responses:

DescriptionXML XPath JSON XPath
Document root / /json
Specific element /firstlevel/one /json/firstlevel/one
i-th child /firstlevel/two/item[2]/json/firstlevel/two/[2]

This list is not exhaustive, but it provides a general idea of the possibilities.

XSubTree:   A snapshot of the current element in the document.

This configuration setting provides the entirety of the current element (including its subelements).

The current element is specified through the XPath configuration setting. This configuration setting is read-only.

XText:   The text of the current element.

This configuration setting provides the inner text of the current element.

The current element is specified in the XPath configuration setting. This configuration setting is read-only.

HTTP Config Settings

AcceptEncoding:   Used to tell the server which types of content encodings the client supports.

When AllowHTTPCompression is True, the class adds an Accept-Encoding header to the request being sent to the server. By default, this header's value is "gzip, deflate". This configuration setting allows you to change the value of the Accept-Encoding header. Note: The class only supports gzip and deflate decompression algorithms.

AllowHTTPCompression:   This property enables HTTP compression for receiving data.

This configuration setting enables HTTP compression for receiving data. When set to True (default), the class will accept compressed data. It then will uncompress the data it has received. The class will handle data compressed by both gzip and deflate compression algorithms.

When True, the class adds an Accept-Encoding header to the outgoing request. The value for this header can be controlled by the AcceptEncoding configuration setting. The default value for this header is "gzip, deflate".

The default value is True.

AllowHTTPFallback:   Whether HTTP/2 connections are permitted to fallback to HTTP/1.1.

This configuration setting controls whether HTTP/2 connections are permitted to fall back to HTTP/1.1 when the server does not support HTTP/2. This setting is applicable only when HTTPVersion is set to "2.0".

If set to True (default), the class will automatically use HTTP/1.1 if the server does not support HTTP/2. If set to False, the class fails with an error if the server does not support HTTP/2.

The default value is True.

Append:   Whether to append data to LocalFile.

This configuration setting determines whether data will be appended when writing to LocalFile. When set to True, downloaded data will be appended to LocalFile. This may be used in conjunction with Range to resume a failed download. This is applicable only when LocalFile is set. The default value is False.

Authorization:   The Authorization string to be sent to the server.

If the Authorization property contains a nonempty string, an Authorization HTTP request header is added to the request. This header conveys Authorization information to the server.

This property is provided so that the HTTP class can be extended with other security schemes in addition to the authorization schemes already implemented by the class.

The AuthScheme property defines the authentication scheme used. In the case of HTTP Basic Authentication (default), every time User and Password are set, they are Base64 encoded, and the result is put in the Authorization property in the form "Basic [encoded-user-password]".

BytesTransferred:   Contains the number of bytes transferred in the response data.

This configuration setting returns the raw number of bytes from the HTTP response data, before the component processes the data, whether it is chunked or compressed. This returns the same value as the Transfer event, by BytesTransferred.

ChunkSize:   Specifies the chunk size in bytes when using chunked encoding.

This is applicable only when UseChunkedEncoding is True. This setting specifies the chunk size in bytes to be used when posting data. The default value is 16384.

CompressHTTPRequest:   Set to true to compress the body of a PUT or POST request.

If set to True, the body of a PUT or POST request will be compressed into gzip format before sending the request. The "Content-Encoding" header is also added to the outgoing request.

The default value is False.

EncodeURL:   If set to True the URL will be encoded by the class.

If set to True, the URL passed to the class will be URL encoded. The default value is False.

FollowRedirects:   Determines what happens when the server issues a redirect.

This option determines what happens when the server issues a redirect. Normally, the class returns an error if the server responds with an "Object Moved" message. If this property is set to 1 (always), the new URL for the object is retrieved automatically every time.

If this property is set to 2 (Same Scheme), the new URL is retrieved automatically only if the URL Scheme is the same; otherwise, the class fails with an error.

Note: Following the HTTP specification, unless this option is set to 1 (Always), automatic redirects will be performed only for GET or HEAD requests. Other methods potentially could change the conditions of the initial request and create security vulnerabilities.

Furthermore, if either the new URL server or port are different from the existing one, User and Password are also reset to empty, unless this property is set to 1 (Always), in which case the same credentials are used to connect to the new server.

A Redirect event is fired for every URL the product is redirected to. In the case of automatic redirections, the Redirect event is a good place to set properties related to the new connection (e.g., new authentication parameters).

The default value is 0 (Never). In this case, redirects are never followed, and the class fails with an error instead.

Following are the valid options:

  • 0 - Never
  • 1 - Always
  • 2 - Same Scheme

GetOn302Redirect:   If set to True the class will perform a GET on the new location.

The default value is False. If set to True, the class will perform a GET on the new location. Otherwise, it will use the same HTTP method again.

HTTP2HeadersWithoutIndexing:   HTTP2 headers that should not update the dynamic header table with incremental indexing.

HTTP/2 servers maintain a dynamic table of headers and values seen over the course of a connection. Typically, these headers are inserted into the table through incremental indexing (also known as HPACK, defined in RFC 7541). To tell the component not to use incremental indexing for certain headers, and thus not update the dynamic table, set this configuration option to a comma-delimited list of the header names.

HTTPVersion:   The version of HTTP used by the class.

This property specifies the HTTP version used by the class. Possible values are as follows:

  • "1.0"
  • "1.1" (default)
  • "2.0"
  • "3.0"

When using HTTP/2 ("2.0"), additional restrictions apply. Please see the following notes for details.

HTTP/2 Notes

When using HTTP/2, a secure Secure Sockets Layer/Transport Layer Security (TLS/SSL) connection is required. Attempting to use a plaintext URL with HTTP/2 will result in an error.

If the server does not support HTTP/2, the class will automatically use HTTP/1.1 instead. This is done to provide compatibility without the need for any additional settings. To see which version was used, check NegotiatedHTTPVersion after calling a method. The AllowHTTPFallback setting controls whether this behavior is allowed (default) or disallowed.

HTTP/3 Notes

HTTP/3 is supported only in .NET and Java.

When using HTTP/3, a secure (TLS/SSL) connection is required. Attempting to use a plaintext URL with HTTP/3 will result in an error.

IfModifiedSince:   A date determining the maximum age of the desired document.

If this setting contains a nonempty string, an If-Modified-Since HTTP header is added to the request. The value of this header is used to make the HTTP request conditional: if the requested documented has not been modified since the time specified in the field, a copy of the document will not be returned from the server; instead, a 304 (not modified) response will be returned by the server and the component throws an exception

The format of the date value for IfModifiedSince is detailed in the HTTP specs. For example: Sat, 29 Oct 2017 19:43:31 GMT.

KeepAlive:   Determines whether the HTTP connection is closed after completion of the request.

If true, the component will not send the Connection: Close header. The absence of the Connection header indicates to the server that HTTP persistent connections should be used if supported. Note: Not all servers support persistent connections. If false, the connection will be closed immediately after the server response is received.

The default value for KeepAlive is false.

KerberosSPN:   The Service Principal Name for the Kerberos Domain Controller.

If the Service Principal Name on the Kerberos Domain Controller is not the same as the URL that you are authenticating to, the Service Principal Name should be set here.

LogLevel:   The level of detail that is logged.

This configuration setting controls the level of detail that is logged through the Log event. Possible values are as follows:

0 (None) No events are logged.
1 (Info - default) Informational events are logged.
2 (Verbose) Detailed data are logged.
3 (Debug) Debug data are logged.

The value 1 (Info) logs basic information, including the URL, HTTP version, and status details.

The value 2 (Verbose) logs additional information about the request and response.

The value 3 (Debug) logs the headers and body for both the request and response, as well as additional debug information (if any).

MaxRedirectAttempts:   Limits the number of redirects that are followed in a request.

When FollowRedirects is set to any value other than frNever, the class will follow redirects until this maximum number of redirect attempts are made. The default value is 20.

NegotiatedHTTPVersion:   The negotiated HTTP version.

This configuration setting may be queried after the request is complete to indicate the HTTP version used. When HTTPVersion is set to "2.0" (if the server does not support "2.0"), then the class will fall back to using "1.1" automatically. This setting will indicate which version was used.

OtherHeaders:   Other headers as determined by the user (optional).

This configuration setting can be set to a string of headers to be appended to the HTTP request headers.

The headers must follow the format "header: value" as described in the HTTP specifications. Header lines should be separated by CRLF ("\r\n") .

Use this configuration setting with caution. If this configuration setting contains invalid headers, HTTP requests may fail.

This configuration setting is useful for extending the functionality of the class beyond what is provided.

ProxyAuthorization:   The authorization string to be sent to the proxy server.

This is similar to the Authorization configuration setting, but is used for proxy authorization. If this configuration setting contains a nonempty string, a Proxy-Authorization HTTP request header is added to the request. This header conveys proxy Authorization information to the server. If User and Password are specified, this value is calculated using the algorithm specified by AuthScheme.

ProxyAuthScheme:   The authorization scheme to be used for the proxy.

This configuration setting is provided for use by classs that do not directly expose Proxy properties.

ProxyPassword:   A password if authentication is to be used for the proxy.

This configuration setting is provided for use by classs that do not directly expose Proxy properties.

ProxyPort:   Port for the proxy server (default 80).

This configuration setting is provided for use by classs that do not directly expose Proxy properties.

ProxyServer:   Name or IP address of a proxy server (optional).

This configuration setting is provided for use by classs that do not directly expose Proxy properties.

ProxyUser:   A user name if authentication is to be used for the proxy.

This configuration setting is provided for use by classs that do not directly expose Proxy properties.

SentHeaders:   The full set of headers as sent by the client.

This configuration setting returns the complete set of raw headers as sent by the client.

StatusCode:   The status code of the last response from the server.

This configuration setting contains the result code of the last response from the server.

StatusLine:   The first line of the last response from the server.

This setting contains the first line of the last response from the server. The format of the line will be [HTTP version] [Result Code] [Description].

TransferredData:   The contents of the last response from the server.

This configuration setting contains the contents of the last response from the server.

TransferredDataLimit:   The maximum number of incoming bytes to be stored by the class.

If TransferredDataLimit is set to 0 (default), no limits are imposed. Otherwise, this reflects the maximum number of incoming bytes that can be stored by the class.

TransferredHeaders:   The full set of headers as received from the server.

This configuration setting returns the complete set of raw headers as received from the server.

TransferredRequest:   The full request as sent by the client.

This configuration setting returns the full request as sent by the client. For performance reasons, the request is not normally saved. Set this configuration setting to ON before making a request to enable it. Following are examples of this request:

.NET Http http = new Http(); http.Config("TransferredRequest=on"); http.PostData = "body"; http.Post("http://someserver.com"); Console.WriteLine(http.Config("TransferredRequest")); C++ HTTP http; http.Config("TransferredRequest=on"); http.SetPostData("body", 5); http.Post("http://someserver.com"); printf("%s\r\n", http.Config("TransferredRequest"));

UseChunkedEncoding:   Enables or Disables HTTP chunked encoding for transfers.

If UseChunkedEncoding is set to True, the class will use HTTP-chunked encoding when posting, if possible. HTTP-chunked encoding allows large files to be sent in chunks instead of all at once. If set to False, the class will not use HTTP-chunked encoding. The default value is False.

Note: Some servers (such as the ASP.NET Development Server) may not support chunked encoding.

UseIDNs:   Whether to encode hostnames to internationalized domain names.

This configuration setting specifies whether hostnames containing non-ASCII characters are encoded to internationalized domain names. When set to True, if a hostname contains non-ASCII characters, it is encoded using Punycode to an IDN (internationalized domain name).

The default value is False and the hostname will always be used exactly as specified. Note: The CodePage setting must be set to a value capable of interpreting the specified host name. For instance, to specify UTF-8, set CodePage to 65001. In the C++ Edition for Windows, the *W version of the class must be used. For instance, DNSW or HTTPW.

UsePlatformHTTPClient:   Whether or not to use the platform HTTP client.

When using this configuration setting, if True, the component will use the default HTTP client for the platform (URLConnection in Java, WebRequest in .NET, or CFHTTPMessage in Mac/iOS) instead of the internal HTTP implementation. This is important for environments in which direct access to sockets is limited or not allowed (e.g., in the Google AppEngine).

Note: This setting is applicable only to Mac/iOS editions.

UseProxyAutoConfigURL:   Whether to use a Proxy auto-config file when attempting a connection.

This configuration specifies whether the class will attempt to use the Proxy auto-config URL when establishing a connection and AutoDetect is set to True.

When True (default), the class will check for the existence of a Proxy auto-config URL, and if found, will determine the appropriate proxy to use.

UserAgent:   Information about the user agent (browser).

This is the value supplied in the HTTP User-Agent header. The default setting is "IPWorks HTTP Component - www.nsoftware.com".

Override the default with the name and version of your software.

TCPClient Config Settings

ConnectionTimeout:   Sets a separate timeout value for establishing a connection.

When set, this configuration setting allows you to specify a different timeout value for establishing a connection. Otherwise, the class will use Timeout for establishing a connection and transmitting/receiving data.

FirewallAutoDetect:   Tells the class whether or not to automatically detect and use firewall system settings, if available.

This configuration setting is provided for use by classs that do not directly expose Firewall properties.

FirewallHost:   Name or IP address of firewall (optional).

If a FirewallHost is given, requested connections will be authenticated through the specified firewall when connecting.

If the FirewallHost setting is set to a Domain Name, a DNS request is initiated. Upon successful termination of the request, the FirewallHost setting is set to the corresponding address. If the search is not successful, an error is returned.

Note: This setting is provided for use by classs that do not directly expose Firewall properties.

FirewallPassword:   Password to be used if authentication is to be used when connecting through the firewall.

If FirewallHost is specified, the FirewallUser and FirewallPassword settings are used to connect and authenticate to the given firewall. If the authentication fails, the class fails with an error.

Note: This setting is provided for use by classs that do not directly expose Firewall properties.

FirewallPort:   The TCP port for the FirewallHost;.

The FirewallPort is set automatically when FirewallType is set to a valid value.

Note: This configuration setting is provided for use by classs that do not directly expose Firewall properties.

FirewallType:   Determines the type of firewall to connect through.

Possible values are as follows:

0No firewall (default setting).
1Connect through a tunneling proxy. FirewallPort is set to 80.
2Connect through a SOCKS4 Proxy. FirewallPort is set to 1080.
3Connect through a SOCKS5 Proxy. FirewallPort is set to 1080.
10Connect through a SOCKS4A Proxy. FirewallPort is set to 1080.

Note: This setting is provided for use by classs that do not directly expose Firewall properties.

FirewallUser:   A user name if authentication is to be used connecting through a firewall.

If the FirewallHost is specified, the FirewallUser and FirewallPassword settings are used to connect and authenticate to the Firewall. If the authentication fails, the class fails with an error.

Note: This setting is provided for use by classs that do not directly expose Firewall properties.

KeepAliveInterval:   The retry interval, in milliseconds, to be used when a TCP keep-alive packet is sent and no response is received.

When set, TCPKeepAlive will automatically be set to True. A TCP keep-alive packet will be sent after a period of inactivity as defined by KeepAliveTime. If no acknowledgment is received from the remote host, the keep-alive packet will be sent again. This configuration setting specifies the interval at which the successive keep-alive packets are sent in milliseconds. This system default if this value is not specified here is 1 second.

Note: This value is not applicable in macOS.

KeepAliveRetryCount:   The number of keep-alive packets to be sent before the remotehost is considered disconnected.

When set, TCPKeepAlive will automatically be set to True. A TCP keep-alive packet will be sent after a period of inactivity as defined by KeepAliveTime. If no acknowledgment is received from the remote host, the keep-alive packet will be sent again. This configuration setting specifies the number of times that the keep-alive packets will be sent before the remote host is considered disconnected. The system default if this value is not specified here is 9.

Note: This configuration setting is only available in the Unix platform. It is not supported in masOS or FreeBSD.

KeepAliveTime:   The inactivity time in milliseconds before a TCP keep-alive packet is sent.

When set, TCPKeepAlive will automatically be set to True. By default, the operating system will determine the time a connection is idle before a Transmission Control Protocol (TCP) keep-alive packet is sent. This system default if this value is not specified here is 2 hours. In many cases, a shorter interval is more useful. Set this value to the desired interval in milliseconds.

Linger:   When set to True, connections are terminated gracefully.

This property controls how a connection is closed. The default is True.

In the case that Linger is True (default), two scenarios determine how long the connection will linger. In the first, if LingerTime is 0 (default), the system will attempt to send pending data for a connection until the default IP timeout expires.

In the second scenario, if LingerTime is a positive value, the system will attempt to send pending data until the specified LingerTime is reached. If this attempt fails, then the system will reset the connection.

The default behavior (which is also the default mode for stream sockets) might result in a long delay in closing the connection. Although the class returns control immediately, the system could hold system resources until all pending data are sent (even after your application closes).

Setting this property to False forces an immediate disconnection. If you know that the other side has received all the data you sent (e.g., by a client acknowledgment), setting this property to False might be the appropriate course of action.

LingerTime:   Time in seconds to have the connection linger.

LingerTime is the time, in seconds, the socket connection will linger. This value is 0 by default, which means it will use the default IP timeout.

LocalHost:   The name of the local host through which connections are initiated or accepted.

The LocalHost setting contains the name of the local host as obtained by the gethostname() system call, or if the user has assigned an IP address, the value of that address.

In multihomed hosts (machines with more than one IP interface), setting LocalHost to the value of an interface will make the class initiate connections (or accept in the case of server classs) only through that interface.

If the class is connected, the LocalHost setting shows the IP address of the interface through which the connection is made in internet dotted format (aaa.bbb.ccc.ddd). In most cases, this is the address of the local host, except for multihomed hosts (machines with more than one IP interface).

LocalPort:   The port in the local host where the class binds.

This configuration setting must be set before a connection is attempted. It instructs the class to bind to a specific port (or communication endpoint) in the local machine.

Setting this to 0 (default) enables the system to choose a port at random. The chosen port will be shown by LocalPort after the connection is established.

LocalPort cannot be changed once a connection is made. Any attempt to set this when a connection is active will generate an error.

This configuration setting is useful when trying to connect to services that require a trusted port on the client side. An example is the remote shell (rsh) service in UNIX systems.

MaxLineLength:   The maximum amount of data to accumulate when no EOL is found.

MaxLineLength is the size of an internal buffer, which holds received data while waiting for an EOL string.

If an EOL string is found in the input stream before MaxLineLength bytes are received, the DataIn event is fired with the EOL parameter set to True, and the buffer is reset.

If no EOL is found, and MaxLineLength bytes are accumulated in the buffer, the DataIn event is fired with the EOL parameter set to False, and the buffer is reset.

The minimum value for MaxLineLength is 256 bytes. The default value is 2048 bytes.

MaxTransferRate:   The transfer rate limit in bytes per second.

This configuration setting can be used to throttle outbound TCP traffic. Set this to the number of bytes to be sent per second. By default, this is not set and there is no limit.

ProxyExceptionsList:   A semicolon separated list of hosts and IPs to bypass when using a proxy.

This configuration setting optionally specifies a semicolon-separated list of hostnames or IP addresses to bypass when a proxy is in use. When requests are made to hosts specified in this property, the proxy will not be used. For instance:

www.google.com;www.nsoftware.com

TCPKeepAlive:   Determines whether or not the keep alive socket option is enabled.

If set to True, the socket's keep-alive option is enabled and keep-alive packets will be sent periodically to maintain the connection. Set KeepAliveTime and KeepAliveInterval to configure the timing of the keep-alive packets.

Note: This value is not applicable in Java.

TcpNoDelay:   Whether or not to delay when sending packets.

When set to True, the socket will send all data that are ready to send at once. When set to False, the socket will send smaller buffered packets of data at small intervals. This is known as the Nagle algorithm.

By default, this configuration setting is set to False.

UseIPv6:   Whether to use IPv6.

When set to 0 (default), the class will use IPv4 exclusively. When set to 1, the class will use IPv6 exclusively. To instruct the class to prefer IPv6 addresses, but use IPv4 if IPv6 is not supported on the system, this setting should be set to 2. The default value is 0. Possible values are as follows:

0 IPv4 only
1 IPv6 only
2 IPv6 with IPv4 fallback

SSL Config Settings

LogSSLPackets:   Controls whether SSL packets are logged when using the internal security API.

When SSLProvider is set to Internal, this configuration setting controls whether Secure Sockets Layer (SSL) packets should be logged. By default, this configuration setting is False, as it is useful only for debugging purposes.

When enabled, SSL packet logs are output using the SSLStatus event, which will fire each time an SSL packet is sent or received.

Enabling this configuration setting has no effect if SSLProvider is set to Platform.

OpenSSLCADir:   The path to a directory containing CA certificates.

This functionality is available only when the provider is OpenSSL.

The path set by this property should point to a directory containing CA certificates in PEM format. The files each contain one CA certificate. The files are looked up by the CA subject name hash value, which must hence be available. If more than one CA certificate with the same name hash value exist, the extension must be different (e.g., 9d66eef0.0, 9d66eef0.1). OpenSSL recommends the use of the c_rehash utility to create the necessary links. Please refer to the OpenSSL man page SSL_CTX_load_verify_locations(3) for details.

OpenSSLCAFile:   Name of the file containing the list of CA's trusted by your application.

This functionality is available only when the provider is OpenSSL.

The file set by this property should contain a list of CA certificates in PEM format. The file can contain several CA certificates identified by the following sequences:

-----BEGIN CERTIFICATE-----

... (CA certificate in base64 encoding) ...

-----END CERTIFICATE-----

Before, between, and after the certificate text is allowed, which can be used, for example, for descriptions of the certificates. Refer to the OpenSSL man page SSL_CTX_load_verify_locations(3) for details.

OpenSSLCipherList:   A string that controls the ciphers to be used by SSL.

This functionality is available only when the provider is OpenSSL.

The format of this string is described in the OpenSSL man page ciphers(1) section "CIPHER LIST FORMAT". Please refer to it for details. The default string "DEFAULT" is determined at compile time and is normally equivalent to "ALL:!ADH:RC4+RSA:+SSLv2:@STRENGTH".

OpenSSLPrngSeedData:   The data to seed the pseudo random number generator (PRNG).

This functionality is available only when the provider is OpenSSL.

By default, OpenSSL uses the device file "/dev/urandom" to seed the PRNG, and setting OpenSSLPrngSeedData is not required. If set, the string specified is used to seed the PRNG.

ReuseSSLSession:   Determines if the SSL session is reused.

If set to True, the class will reuse the context if and only if the following criteria are met:

  • The target host name is the same.
  • The system cache entry has not expired (default timeout is 10 hours).
  • The application process that calls the function is the same.
  • The logon session is the same.
  • The instance of the class is the same.

SSLCACertFilePaths:   The paths to CA certificate files on Unix/Linux.

This configuration setting specifies the paths on disk to CA certificate files on Unix/Linux.

The value is formatted as a list of paths separated by semicolons. The class will check for the existence of each file in the order specified. When a file is found, the CA certificates within the file will be loaded and used to determine the validity of server or client certificates.

The default value is as follows:

/etc/ssl/ca-bundle.pem;/etc/pki/tls/certs/ca-bundle.crt;/etc/ssl/certs/ca-certificates.crt;/etc/pki/tls/cacert.pem

SSLCACerts:   A newline separated list of CA certificates to be included when performing an SSL handshake.

When SSLProvider is set to Internal, this configuration setting specifies one or more CA certificates to be included with the SSLCert property. Some servers or clients require the entire chain, including CA certificates, to be presented when performing SSL authentication. The value of this configuration setting is a newline-separated (CR/LF) list of certificates. For instance:

-----BEGIN CERTIFICATE-----
MIIEKzCCAxOgAwIBAgIRANTET4LIkxdH6P+CFIiHvTowDQYJKoZIhvcNAQELBQAw
... Intermediate Cert ...
eWHV5OW1K53o/atv59sOiW5K3crjFhsBOd5Q+cJJnU+SWinPKtANXMht+EDvYY2w
F0I1XhM+pKj7FjDr+XNj
-----END CERTIFICATE-----
\r \n
-----BEGIN CERTIFICATE-----
MIIEFjCCAv6gAwIBAgIQetu1SMxpnENAnnOz1P+PtTANBgkqhkiG9w0BAQUFADBp
... Root Cert ...
d8q23djXZbVYiIfE9ebr4g3152BlVCHZ2GyPdjhIuLeH21VbT/dyEHHA
-----END CERTIFICATE-----

SSLCipherStrength:   The minimum cipher strength used for bulk encryption.

This minimum cipher strength is largely dependent on the security modules installed on the system. If the cipher strength specified is not supported, an error will be returned when connections are initiated.

Note: This configuration setting contains the minimum cipher strength requested from the security library. The actual cipher strength used for the connection is shown by the SSLStatus event.

Use this configuration setting with caution. Requesting a lower cipher strength than necessary could potentially cause serious security vulnerabilities in your application.

When the provider is OpenSSL, SSLCipherStrength is currently not supported. This functionality is instead made available through the OpenSSLCipherList configuration setting.

SSLClientCACerts:   A newline separated list of CA certificates to use during SSL client certificate validation.

This configuration setting is only applicable to server components (e.g., TCPServer) see SSLServerCACerts for client components (e.g., TCPClient). This setting can be used to optionally specify one or more CA certificates to be used when verifying the client certificate that is presented by the client during the SSL handshake when SSLAuthenticateClients is enabled. When verifying the client's certificate, the certificates trusted by the system will be used as part of the verification process. If the client's CA certificates are not installed to the trusted system store, they may be specified here so they are included when performing the verification process. This configuration setting should be set only if the client's CA certificates are not already trusted on the system and cannot be installed to the trusted system store.

The value of this configuration setting is a newline-separated (CR/LF) list of certificates. For instance:

-----BEGIN CERTIFICATE-----
MIIEKzCCAxOgAwIBAgIRANTET4LIkxdH6P+CFIiHvTowDQYJKoZIhvcNAQELBQAw
... Intermediate Cert ...
eWHV5OW1K53o/atv59sOiW5K3crjFhsBOd5Q+cJJnU+SWinPKtANXMht+EDvYY2w
F0I1XhM+pKj7FjDr+XNj
-----END CERTIFICATE-----
\r \n
-----BEGIN CERTIFICATE-----
MIIEFjCCAv6gAwIBAgIQetu1SMxpnENAnnOz1P+PtTANBgkqhkiG9w0BAQUFADBp
... Root Cert ...
d8q23djXZbVYiIfE9ebr4g3152BlVCHZ2GyPdjhIuLeH21VbT/dyEHHA
-----END CERTIFICATE-----

SSLEnabledCipherSuites:   The cipher suite to be used in an SSL negotiation.

This configuration setting enables the cipher suites to be used in SSL negotiation.

By default, the enabled cipher suites will include all available ciphers ("*").

The special value "*" means that the class will pick all of the supported cipher suites. If SSLEnabledCipherSuites is set to any other value, only the specified cipher suites will be considered.

Multiple cipher suites are separated by semicolons.

Example values when SSLProvider is set to Platform include the following: obj.config("SSLEnabledCipherSuites=*"); obj.config("SSLEnabledCipherSuites=CALG_AES_256"); obj.config("SSLEnabledCipherSuites=CALG_AES_256;CALG_3DES"); Possible values when SSLProvider is set to Platform include the following:

  • CALG_3DES
  • CALG_3DES_112
  • CALG_AES
  • CALG_AES_128
  • CALG_AES_192
  • CALG_AES_256
  • CALG_AGREEDKEY_ANY
  • CALG_CYLINK_MEK
  • CALG_DES
  • CALG_DESX
  • CALG_DH_EPHEM
  • CALG_DH_SF
  • CALG_DSS_SIGN
  • CALG_ECDH
  • CALG_ECDH_EPHEM
  • CALG_ECDSA
  • CALG_ECMQV
  • CALG_HASH_REPLACE_OWF
  • CALG_HUGHES_MD5
  • CALG_HMAC
  • CALG_KEA_KEYX
  • CALG_MAC
  • CALG_MD2
  • CALG_MD4
  • CALG_MD5
  • CALG_NO_SIGN
  • CALG_OID_INFO_CNG_ONLY
  • CALG_OID_INFO_PARAMETERS
  • CALG_PCT1_MASTER
  • CALG_RC2
  • CALG_RC4
  • CALG_RC5
  • CALG_RSA_KEYX
  • CALG_RSA_SIGN
  • CALG_SCHANNEL_ENC_KEY
  • CALG_SCHANNEL_MAC_KEY
  • CALG_SCHANNEL_MASTER_HASH
  • CALG_SEAL
  • CALG_SHA
  • CALG_SHA1
  • CALG_SHA_256
  • CALG_SHA_384
  • CALG_SHA_512
  • CALG_SKIPJACK
  • CALG_SSL2_MASTER
  • CALG_SSL3_MASTER
  • CALG_SSL3_SHAMD5
  • CALG_TEK
  • CALG_TLS1_MASTER
  • CALG_TLS1PRF
Example values when SSLProvider is set to Internalinclude the following: obj.config("SSLEnabledCipherSuites=*"); obj.config("SSLEnabledCipherSuites=TLS_DHE_DSS_WITH_AES_128_CBC_SHA"); obj.config("SSLEnabledCipherSuites=TLS_DHE_DSS_WITH_AES_128_CBC_SHA;TLS_ECDH_RSA_WITH_AES_128_CBC_SHA"); Possible values when SSLProvider is set to Internal include the following:
  • TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384
  • TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
  • TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
  • TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
  • TLS_ECDH_ECDSA_WITH_AES_256_GCM_SHA384
  • TLS_RSA_WITH_AES_256_GCM_SHA384
  • TLS_RSA_WITH_AES_128_GCM_SHA256
  • TLS_ECDH_ECDSA_WITH_AES_128_GCM_SHA256
  • TLS_DHE_DSS_WITH_AES_256_GCM_SHA384
  • TLS_DHE_RSA_WITH_AES_256_GCM_SHA384
  • TLS_ECDH_RSA_WITH_AES_256_GCM_SHA384
  • TLS_ECDH_RSA_WITH_AES_128_GCM_SHA256
  • TLS_DHE_RSA_WITH_AES_128_GCM_SHA256
  • TLS_DHE_DSS_WITH_AES_128_GCM_SHA256
  • TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384
  • TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256
  • TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA384
  • TLS_DHE_DSS_WITH_AES_256_CBC_SHA256
  • TLS_RSA_WITH_AES_256_CBC_SHA256
  • TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
  • TLS_ECDH_RSA_WITH_AES_256_CBC_SHA384
  • TLS_DHE_RSA_WITH_AES_256_CBC_SHA256
  • TLS_DHE_RSA_WITH_AES_128_CBC_SHA256
  • TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
  • TLS_RSA_WITH_AES_128_CBC_SHA256
  • TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA256
  • TLS_ECDH_RSA_WITH_AES_128_CBC_SHA256
  • TLS_DHE_DSS_WITH_AES_128_CBC_SHA256
  • TLS_RSA_WITH_AES_256_CBC_SHA
  • TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA
  • TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
  • TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA
  • TLS_DHE_RSA_WITH_AES_256_CBC_SHA
  • TLS_ECDH_RSA_WITH_AES_256_CBC_SHA
  • TLS_DHE_DSS_WITH_AES_256_CBC_SHA
  • TLS_RSA_WITH_AES_128_CBC_SHA
  • TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
  • TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA
  • TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA
  • TLS_ECDH_RSA_WITH_AES_128_CBC_SHA
  • TLS_DHE_RSA_WITH_AES_128_CBC_SHA
  • TLS_DHE_DSS_WITH_AES_128_CBC_SHA
  • TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA
  • TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA
  • TLS_ECDH_ECDSA_WITH_3DES_EDE_CBC_SHA
  • TLS_ECDH_RSA_WITH_3DES_EDE_CBC_SHA
  • TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA
  • TLS_DHE_DSS_WITH_3DES_EDE_CBC_SHA
  • TLS_RSA_WITH_3DES_EDE_CBC_SHA
  • TLS_RSA_WITH_DES_CBC_SHA
  • TLS_DHE_RSA_WITH_DES_CBC_SHA
  • TLS_DHE_DSS_WITH_DES_CBC_SHA
  • TLS_RSA_WITH_RC4_128_MD5
  • TLS_RSA_WITH_RC4_128_SHA

When TLS 1.3 is negotiated (see SSLEnabledProtocols), only the following cipher suites are supported:

  • TLS_AES_256_GCM_SHA384
  • TLS_CHACHA20_POLY1305_SHA256
  • TLS_AES_128_GCM_SHA256

SSLEnabledCipherSuites is used together with SSLCipherStrength.

SSLEnabledProtocols:   Used to enable/disable the supported security protocols.

This configuration setting is used to enable or disable the supported security protocols.

Not all supported protocols are enabled by default. The default value is 4032 for client components, and 3072 for server components. To specify a combination of enabled protocol versions set this config to the binary OR of one or more of the following values:

TLS1.312288 (Hex 3000)
TLS1.23072 (Hex C00) (Default - Client and Server)
TLS1.1768 (Hex 300) (Default - Client)
TLS1 192 (Hex C0) (Default - Client)
SSL3 48 (Hex 30)
SSL2 12 (Hex 0C)

Note that only TLS 1.2 is enabled for server components that accept incoming connections. This adheres to industry standards to ensure a secure connection. Client components enable TLS 1.0, TLS 1.1, and TLS 1.2 by default and will negotiate the highest mutually supported version when connecting to a server, which should be TLS 1.2 in most cases.

SSLEnabledProtocols: Transport Layer Security (TLS) 1.3 Notes:

By default when TLS 1.3 is enabled, the class will use the internal TLS implementation when the SSLProvider is set to Automatic for all editions.

In editions that are designed to run on Windows, SSLProvider can be set to Platform to use the platform implementation instead of the internal implementation. When configured in this manner, please note that the platform provider is supported only on Windows 11/Windows Server 2022 and up. The default internal provider is available on all platforms and is not restricted to any specific OS version.

If set to 1 (Platform provider), please be aware of the following notes:

  • The platform provider is available only on Windows 11/Windows Server 2022 and up.
  • SSLEnabledCipherSuites and other similar SSL configuration settings are not supported.
  • If SSLEnabledProtocols includes both TLS 1.3 and TLS 1.2, these restrictions are still applicable even if TLS 1.2 is negotiated. Enabling TLS 1.3 with the platform provider changes the implementation used for all TLS versions.

SSLEnabledProtocols: SSL2 and SSL3 Notes:

SSL 2.0 and 3.0 are not supported by the class when the SSLProvider is set to internal. To use SSL 2.0 or SSL 3.0, the platform security API must have the protocols enabled and SSLProvider needs to be set to platform.

SSLEnableRenegotiation:   Whether the renegotiation_info SSL extension is supported.

This configuration setting specifies whether the renegotiation_info SSL extension will be used in the request when using the internal security API. This configuration setting is false by default, but it can be set to true to enable the extension.

This configuration setting is applicable only when SSLProvider is set to Internal.

SSLIncludeCertChain:   Whether the entire certificate chain is included in the SSLServerAuthentication event.

This configuration setting specifies whether the Encoded parameter of the SSLServerAuthentication event contains the full certificate chain. By default this value is False and only the leaf certificate will be present in the Encoded parameter of the SSLServerAuthentication event.

If set to True, all certificates returned by the server will be present in the Encoded parameter of the SSLServerAuthentication event. This includes the leaf certificate, any intermediate certificate, and the root certificate.

SSLKeyLogFile:   The location of a file where per-session secrets are written for debugging purposes.

This configuration setting optionally specifies the full path to a file on disk where per-session secrets are stored for debugging purposes.

When set, the class will save the session secrets in the same format as the SSLKEYLOGFILE environment variable functionality used by most major browsers and tools, such as Chrome, Firefox, and cURL. This file can then be used in tools such as Wireshark to decrypt TLS traffic for debugging purposes. When writing to this file, the class will only append, it will not overwrite previous values.

Note: This configuration setting is applicable only when SSLProvider is set to Internal.

SSLNegotiatedCipher:   Returns the negotiated cipher suite.

This configuration setting returns the cipher suite negotiated during the SSL handshake.

Note: For server components (e.g., TCPServer), this is a per-connection configuration setting accessed by passing the ConnectionId. For example: server.Config("SSLNegotiatedCipher[connId]");

SSLNegotiatedCipherStrength:   Returns the negotiated cipher suite strength.

This configuration setting returns the strength of the cipher suite negotiated during the SSL handshake.

Note: For server components (e.g., TCPServer), this is a per-connection configuration setting accessed by passing the ConnectionId. For example: server.Config("SSLNegotiatedCipherStrength[connId]");

SSLNegotiatedCipherSuite:   Returns the negotiated cipher suite.

This configuration setting returns the cipher suite negotiated during the SSL handshake represented as a single string.

Note: For server components (e.g., TCPServer), this is a per-connection configuration setting accessed by passing the ConnectionId. For example: server.Config("SSLNegotiatedCipherSuite[connId]");

SSLNegotiatedKeyExchange:   Returns the negotiated key exchange algorithm.

This configuration setting returns the key exchange algorithm negotiated during the SSL handshake.

Note: For server components (e.g., TCPServer), this is a per-connection configuration setting accessed by passing the ConnectionId. For example: server.Config("SSLNegotiatedKeyExchange[connId]");

SSLNegotiatedKeyExchangeStrength:   Returns the negotiated key exchange algorithm strength.

This configuration setting returns the strength of the key exchange algorithm negotiated during the SSL handshake.

Note: For server components (e.g., TCPServer), this is a per-connection configuration setting accessed by passing the ConnectionId. For example: server.Config("SSLNegotiatedKeyExchangeStrength[connId]");

SSLNegotiatedVersion:   Returns the negotiated protocol version.

This configuration setting returns the protocol version negotiated during the SSL handshake.

Note: For server components (e.g., TCPServer), this is a per-connection configuration setting accessed by passing the ConnectionId. For example: server.Config("SSLNegotiatedVersion[connId]");

SSLSecurityFlags:   Flags that control certificate verification.

The following flags are defined (specified in hexadecimal notation). They can be ORed together to exclude multiple conditions:

0x00000001Ignore time validity status of certificate.
0x00000002Ignore time validity status of CTL.
0x00000004Ignore non-nested certificate times.
0x00000010Allow unknown certificate authority.
0x00000020Ignore wrong certificate usage.
0x00000100Ignore unknown certificate revocation status.
0x00000200Ignore unknown CTL signer revocation status.
0x00000400Ignore unknown certificate authority revocation status.
0x00000800Ignore unknown root revocation status.
0x00008000Allow test root certificate.
0x00004000Trust test root certificate.
0x80000000Ignore non-matching CN (certificate CN non-matching server name).

This functionality is currently not available when the provider is OpenSSL.

SSLServerCACerts:   A newline separated list of CA certificates to use during SSL server certificate validation.

This configuration setting is only used by client components (e.g., TCPClient) see SSLClientCACerts for server components (e.g., TCPServer). This configuration setting can be used to optionally specify one or more CA certificates to be used when connecting to the server and verifying the server certificate. When verifying the server's certificate, the certificates trusted by the system will be used as part of the verification process. If the server's CA certificates are not installed to the trusted system store, they may be specified here so they are included when performing the verification process. This configuration setting should be set only if the server's CA certificates are not already trusted on the system and cannot be installed to the trusted system store.

The value of this configuration setting is a newline-separated (CR/LF) list of certificates. For instance:

-----BEGIN CERTIFICATE-----
MIIEKzCCAxOgAwIBAgIRANTET4LIkxdH6P+CFIiHvTowDQYJKoZIhvcNAQELBQAw
... Intermediate Cert...
eWHV5OW1K53o/atv59sOiW5K3crjFhsBOd5Q+cJJnU+SWinPKtANXMht+EDvYY2w
F0I1XhM+pKj7FjDr+XNj
-----END CERTIFICATE-----
\r \n
-----BEGIN CERTIFICATE-----
MIIEFjCCAv6gAwIBAgIQetu1SMxpnENAnnOz1P+PtTANBgkqhkiG9w0BAQUFADBp
... Root Cert...
d8q23djXZbVYiIfE9ebr4g3152BlVCHZ2GyPdjhIuLeH21VbT/dyEHHA
-----END CERTIFICATE-----

TLS12SignatureAlgorithms:   Defines the allowed TLS 1.2 signature algorithms when SSLProvider is set to Internal.

This configuration setting specifies the allowed server certificate signature algorithms when SSLProvider is set to Internal and SSLEnabledProtocols is set to allow TLS 1.2.

When specified the class will verify that the server certificate signature algorithm is among the values specified in this configuration setting. If the server certificate signature algorithm is unsupported, the class fails with an error.

The format of this value is a comma-separated list of hash-signature combinations. For instance: component.SSLProvider = TCPClientSSLProviders.sslpInternal; component.Config("SSLEnabledProtocols=3072"); //TLS 1.2 component.Config("TLS12SignatureAlgorithms=sha256-rsa,sha256-dsa,sha1-rsa,sha1-dsa"); The default value for this configuration setting is sha512-ecdsa,sha512-rsa,sha512-dsa,sha384-ecdsa,sha384-rsa,sha384-dsa,sha256-ecdsa,sha256-rsa,sha256-dsa,sha224-ecdsa,sha224-rsa,sha224-dsa,sha1-ecdsa,sha1-rsa,sha1-dsa.

To not restrict the server's certificate signature algorithm, specify an empty string as the value for this configuration setting, which will cause the signature_algorithms TLS 1.2 extension to not be sent.

TLS12SupportedGroups:   The supported groups for ECC.

This configuration setting specifies a comma-separated list of named groups used in TLS 1.2 for ECC.

The default value is ecdhe_secp256r1,ecdhe_secp384r1,ecdhe_secp521r1.

When using TLS 1.2 and SSLProvider is set to Internal, the values refer to the supported groups for ECC. The following values are supported:

  • "ecdhe_secp256r1" (default)
  • "ecdhe_secp384r1" (default)
  • "ecdhe_secp521r1" (default)

TLS13KeyShareGroups:   The groups for which to pregenerate key shares.

This configuration setting specifies a comma-separated list of named groups used in TLS 1.3 for key exchange. The groups specified here will have key share data pregenerated locally before establishing a connection. This can prevent an additional roundtrip during the handshake if the group is supported by the server.

The default value is set to balance common supported groups and the computational resources required to generate key shares. As a result, only some groups are included by default in this configuration setting.

Note: All supported groups can always be used during the handshake even if not listed here, but if a group is used that is not present in this list, it will incur an additional roundtrip and time to generate the key share for that group.

In most cases, this configuration setting does not need to be modified. This should be modified only if there is a specific reason to do so.

The default value is ecdhe_x25519,ecdhe_secp256r1,ecdhe_secp384r1,ffdhe_2048,ffdhe_3072

The values are ordered from most preferred to least preferred. The following values are supported:

  • "ecdhe_x25519" (default)
  • "ecdhe_x448"
  • "ecdhe_secp256r1" (default)
  • "ecdhe_secp384r1" (default)
  • "ecdhe_secp521r1"
  • "ffdhe_2048" (default)
  • "ffdhe_3072" (default)
  • "ffdhe_4096"
  • "ffdhe_6144"
  • "ffdhe_8192"

TLS13SignatureAlgorithms:   The allowed certificate signature algorithms.

This configuration setting holds a comma-separated list of allowed signature algorithms. Possible values include the following:

  • "ed25519" (default)
  • "ed448" (default)
  • "ecdsa_secp256r1_sha256" (default)
  • "ecdsa_secp384r1_sha384" (default)
  • "ecdsa_secp521r1_sha512" (default)
  • "rsa_pkcs1_sha256" (default)
  • "rsa_pkcs1_sha384" (default)
  • "rsa_pkcs1_sha512" (default)
  • "rsa_pss_sha256" (default)
  • "rsa_pss_sha384" (default)
  • "rsa_pss_sha512" (default)
The default value is rsa_pss_sha256,rsa_pss_sha384,rsa_pss_sha512,rsa_pkcs1_sha256,rsa_pkcs1_sha384,rsa_pkcs1_sha512,ecdsa_secp256r1_sha256,ecdsa_secp384r1_sha384,ecdsa_secp521r1_sha512,ed25519,ed448. This configuration setting is applicable only when SSLEnabledProtocols includes TLS 1.3.
TLS13SupportedGroups:   The supported groups for (EC)DHE key exchange.

This configuration setting specifies a comma-separated list of named groups used in TLS 1.3 for key exchange. This configuration setting should be modified only if there is a specific reason to do so.

The default value is ecdhe_x25519,ecdhe_x448,ecdhe_secp256r1,ecdhe_secp384r1,ecdhe_secp521r1,ffdhe_2048,ffdhe_3072,ffdhe_4096,ffdhe_6144,ffdhe_8192

The values are ordered from most preferred to least preferred. The following values are supported:

  • "ecdhe_x25519" (default)
  • "ecdhe_x448" (default)
  • "ecdhe_secp256r1" (default)
  • "ecdhe_secp384r1" (default)
  • "ecdhe_secp521r1" (default)
  • "ffdhe_2048" (default)
  • "ffdhe_3072" (default)
  • "ffdhe_4096" (default)
  • "ffdhe_6144" (default)
  • "ffdhe_8192" (default)

Socket Config Settings

AbsoluteTimeout:   Determines whether timeouts are inactivity timeouts or absolute timeouts.

If AbsoluteTimeout is set to True, any method that does not complete within Timeout seconds will be aborted. By default, AbsoluteTimeout is False, and the timeout is an inactivity timeout.

Note: This option is not valid for User Datagram Protocol (UDP) ports.

FirewallData:   Used to send extra data to the firewall.

When the firewall is a tunneling proxy, use this property to send custom (additional) headers to the firewall (e.g., headers for custom authentication schemes).

InBufferSize:   The size in bytes of the incoming queue of the socket.

This is the size of an internal queue in the Transmission Control Protocol (TCP)/IP stack. You can increase or decrease its size depending on the amount of data that you will be receiving. In some cases, increasing the value of the InBufferSize setting can provide significant improvements in performance.

Some TCP/IP implementations do not support variable buffer sizes. If that is the case, when the class is activated the InBufferSize reverts to its defined size. The same happens if you attempt to make it too large or too small.

OutBufferSize:   The size in bytes of the outgoing queue of the socket.

This is the size of an internal queue in the TCP/IP stack. You can increase or decrease its size depending on the amount of data that you will be sending. In some cases, increasing the value of the OutBufferSize setting can provide significant improvements in performance.

Some TCP/IP implementations do not support variable buffer sizes. If that is the case, when the class is activated the OutBufferSize reverts to its defined size. The same happens if you attempt to make it too large or too small.

Base Config Settings

BuildInfo:   Information about the product's build.

When queried, this setting will return a string containing information about the product's build.

CodePage:   The system code page used for Unicode to Multibyte translations.

The default code page is Unicode UTF-8 (65001).

The following is a list of valid code page identifiers:

IdentifierName
037IBM EBCDIC - U.S./Canada
437OEM - United States
500IBM EBCDIC - International
708Arabic - ASMO 708
709Arabic - ASMO 449+, BCON V4
710Arabic - Transparent Arabic
720Arabic - Transparent ASMO
737OEM - Greek (formerly 437G)
775OEM - Baltic
850OEM - Multilingual Latin I
852OEM - Latin II
855OEM - Cyrillic (primarily Russian)
857OEM - Turkish
858OEM - Multilingual Latin I + Euro symbol
860OEM - Portuguese
861OEM - Icelandic
862OEM - Hebrew
863OEM - Canadian-French
864OEM - Arabic
865OEM - Nordic
866OEM - Russian
869OEM - Modern Greek
870IBM EBCDIC - Multilingual/ROECE (Latin-2)
874ANSI/OEM - Thai (same as 28605, ISO 8859-15)
875IBM EBCDIC - Modern Greek
932ANSI/OEM - Japanese, Shift-JIS
936ANSI/OEM - Simplified Chinese (PRC, Singapore)
949ANSI/OEM - Korean (Unified Hangul Code)
950ANSI/OEM - Traditional Chinese (Taiwan; Hong Kong SAR, PRC)
1026IBM EBCDIC - Turkish (Latin-5)
1047IBM EBCDIC - Latin 1/Open System
1140IBM EBCDIC - U.S./Canada (037 + Euro symbol)
1141IBM EBCDIC - Germany (20273 + Euro symbol)
1142IBM EBCDIC - Denmark/Norway (20277 + Euro symbol)
1143IBM EBCDIC - Finland/Sweden (20278 + Euro symbol)
1144IBM EBCDIC - Italy (20280 + Euro symbol)
1145IBM EBCDIC - Latin America/Spain (20284 + Euro symbol)
1146IBM EBCDIC - United Kingdom (20285 + Euro symbol)
1147IBM EBCDIC - France (20297 + Euro symbol)
1148IBM EBCDIC - International (500 + Euro symbol)
1149IBM EBCDIC - Icelandic (20871 + Euro symbol)
1200Unicode UCS-2 Little-Endian (BMP of ISO 10646)
1201Unicode UCS-2 Big-Endian
1250ANSI - Central European
1251ANSI - Cyrillic
1252ANSI - Latin I
1253ANSI - Greek
1254ANSI - Turkish
1255ANSI - Hebrew
1256ANSI - Arabic
1257ANSI - Baltic
1258ANSI/OEM - Vietnamese
1361Korean (Johab)
10000MAC - Roman
10001MAC - Japanese
10002MAC - Traditional Chinese (Big5)
10003MAC - Korean
10004MAC - Arabic
10005MAC - Hebrew
10006MAC - Greek I
10007MAC - Cyrillic
10008MAC - Simplified Chinese (GB 2312)
10010MAC - Romania
10017MAC - Ukraine
10021MAC - Thai
10029MAC - Latin II
10079MAC - Icelandic
10081MAC - Turkish
10082MAC - Croatia
12000Unicode UCS-4 Little-Endian
12001Unicode UCS-4 Big-Endian
20000CNS - Taiwan
20001TCA - Taiwan
20002Eten - Taiwan
20003IBM5550 - Taiwan
20004TeleText - Taiwan
20005Wang - Taiwan
20105IA5 IRV International Alphabet No. 5 (7-bit)
20106IA5 German (7-bit)
20107IA5 Swedish (7-bit)
20108IA5 Norwegian (7-bit)
20127US-ASCII (7-bit)
20261T.61
20269ISO 6937 Non-Spacing Accent
20273IBM EBCDIC - Germany
20277IBM EBCDIC - Denmark/Norway
20278IBM EBCDIC - Finland/Sweden
20280IBM EBCDIC - Italy
20284IBM EBCDIC - Latin America/Spain
20285IBM EBCDIC - United Kingdom
20290IBM EBCDIC - Japanese Katakana Extended
20297IBM EBCDIC - France
20420IBM EBCDIC - Arabic
20423IBM EBCDIC - Greek
20424IBM EBCDIC - Hebrew
20833IBM EBCDIC - Korean Extended
20838IBM EBCDIC - Thai
20866Russian - KOI8-R
20871IBM EBCDIC - Icelandic
20880IBM EBCDIC - Cyrillic (Russian)
20905IBM EBCDIC - Turkish
20924IBM EBCDIC - Latin-1/Open System (1047 + Euro symbol)
20932JIS X 0208-1990 & 0121-1990
20936Simplified Chinese (GB2312)
21025IBM EBCDIC - Cyrillic (Serbian, Bulgarian)
21027Extended Alpha Lowercase
21866Ukrainian (KOI8-U)
28591ISO 8859-1 Latin I
28592ISO 8859-2 Central Europe
28593ISO 8859-3 Latin 3
28594ISO 8859-4 Baltic
28595ISO 8859-5 Cyrillic
28596ISO 8859-6 Arabic
28597ISO 8859-7 Greek
28598ISO 8859-8 Hebrew
28599ISO 8859-9 Latin 5
28605ISO 8859-15 Latin 9
29001Europa 3
38598ISO 8859-8 Hebrew
50220ISO 2022 Japanese with no halfwidth Katakana
50221ISO 2022 Japanese with halfwidth Katakana
50222ISO 2022 Japanese JIS X 0201-1989
50225ISO 2022 Korean
50227ISO 2022 Simplified Chinese
50229ISO 2022 Traditional Chinese
50930Japanese (Katakana) Extended
50931US/Canada and Japanese
50933Korean Extended and Korean
50935Simplified Chinese Extended and Simplified Chinese
50936Simplified Chinese
50937US/Canada and Traditional Chinese
50939Japanese (Latin) Extended and Japanese
51932EUC - Japanese
51936EUC - Simplified Chinese
51949EUC - Korean
51950EUC - Traditional Chinese
52936HZ-GB2312 Simplified Chinese
54936Windows XP: GB18030 Simplified Chinese (4 Byte)
57002ISCII Devanagari
57003ISCII Bengali
57004ISCII Tamil
57005ISCII Telugu
57006ISCII Assamese
57007ISCII Oriya
57008ISCII Kannada
57009ISCII Malayalam
57010ISCII Gujarati
57011ISCII Punjabi
65000Unicode UTF-7
65001Unicode UTF-8
The following is a list of valid code page identifiers for Mac OS only:
IdentifierName
1ASCII
2NEXTSTEP
3JapaneseEUC
4UTF8
5ISOLatin1
6Symbol
7NonLossyASCII
8ShiftJIS
9ISOLatin2
10Unicode
11WindowsCP1251
12WindowsCP1252
13WindowsCP1253
14WindowsCP1254
15WindowsCP1250
21ISO2022JP
30MacOSRoman
10UTF16String
0x90000100UTF16BigEndian
0x94000100UTF16LittleEndian
0x8c000100UTF32String
0x98000100UTF32BigEndian
0x9c000100UTF32LittleEndian
65536Proprietary

LicenseInfo:   Information about the current license.

When queried, this setting will return a string containing information about the license this instance of a class is using. It will return the following information:

  • Product: The product the license is for.
  • Product Key: The key the license was generated from.
  • License Source: Where the license was found (e.g., RuntimeLicense, License File).
  • License Type: The type of license installed (e.g., Royalty Free, Single Server).
  • Last Valid Build: The last valid build number for which the license will work.
MaskSensitiveData:   Whether sensitive data is masked in log messages.

In certain circumstances it may be beneficial to mask sensitive data, like passwords, in log messages. Set this to true to mask sensitive data. The default is true.

This setting only works on these classes: AS3Receiver, AS3Sender, Atom, Client(3DS), FTP, FTPServer, IMAP, OFTPClient, SSHClient, SCP, Server(3DS), Sexec, SFTP, SFTPServer, SSHServer, TCPClient, TCPServer.

ProcessIdleEvents:   Whether the class uses its internal event loop to process events when the main thread is idle.

If set to False, the class will not fire internal idle events. Set this to False to use the class in a background thread on Mac OS. By default, this setting is True.

SelectWaitMillis:   The length of time in milliseconds the class will wait when DoEvents is called if there are no events to process.

If there are no events to process when DoEvents is called, the class will wait for the amount of time specified here before returning. The default value is 20.

UseFIPSCompliantAPI:   Tells the class whether or not to use FIPS certified APIs.

When set to true, the class will utilize the underlying operating system's certified APIs. Java editions, regardless of OS, utilize Bouncy Castle Federal Information Processing Standards (FIPS), while all other Windows editions make use of Microsoft security libraries.

FIPS mode can be enabled by setting the UseFIPSCompliantAPI configuration setting to true. This is a static setting that applies to all instances of all classes of the toolkit within the process. It is recommended to enable or disable this setting once before the component has been used to establish a connection. Enabling FIPS while an instance of the component is active and connected may result in unexpected behavior.

For more details, please see the FIPS 140-2 Compliance article.

Note: This setting is applicable only on Windows.

Note: Enabling FIPS compliance requires a special license; please contact sales@nsoftware.com for details.

UseInternalSecurityAPI:   Whether or not to use the system security libraries or an internal implementation.

When set to false, the class will use the system security libraries by default to perform cryptographic functions where applicable.

Setting this configuration setting to true tells the class to use the internal implementation instead of using the system security libraries.

On Windows, this setting is set to false by default. On Linux/macOS, this setting is set to true by default.

To use the system security libraries for Linux, OpenSSL support must be enabled. For more information on how to enable OpenSSL, please refer to the OpenSSL Notes section.

Trappable Errors (BackblazeB2 Class)

Error Handling (C++)

Call the GetLastErrorCode() method to obtain the last called method's result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. Known error codes are listed below. If an error occurs, the GetLastError() method can be called to retrieve the associated error message.

Common Errors

600   A server error occurred, and/or the class was unable to process the server's response. Please refer to the error message for more information.
601   An unsupported operation or action was attempted.
602   The RawRequest or RawResponse configuration setting was queried without first setting the TransferredRequest configuration setting to ON.
603   The login credentials specified were invalid. Please refer to the error message for more information.
604   An invalid remote resource identifier (i.e., a name, path, Id, etc.) was specified.
605   An invalid index was specified.
606   An upload was aborted by the user before it could finish.
607   The specified resource is a folder and cannot be downloaded.
608   A download failed because the specified LocalFile already exists and Overwrite is false.
609   The class could not resume a download or upload. Please refer to the error message for more information.
610   An encrypted download could not be resumed because the DownloadTempFile configuration setting is not set.
611   An exception occurred while working with the specified LocalFile (or the current value of LocalFile is invalid). Please refer to the error message for more information.
612   An exception occurred while working with the specified upload or download stream. Please refer to the error message for more information.

BackblazeB2 Errors

700   The current AuthToken has expired or is otherwise no longer valid; call Authorize to obtain a new one.
701   The specified DownloadAuthToken has expired or is otherwise no longer valid.
702   The request failed due to a temporary server error; try again, using exponential backoff if necessary.

The class may also return one of the following error codes, which are inherited from other classes.

HTTP Errors

118   Firewall error. The error description contains the detailed message.
143   Busy executing current method.
151   HTTP protocol error. The error message has the server response.
152   No server specified in URL.
153   Specified URLScheme is invalid.
155   Range operation is not supported by server.
156   Invalid cookie index (out of range).
301   Interrupted.
302   Cannot open AttachedFile.

The class may also return one of the following error codes, which are inherited from other classes.

TCPClient Errors

100   You cannot change the RemotePort at this time. A connection is in progress.
101   You cannot change the RemoteHost (Server) at this time. A connection is in progress.
102   The RemoteHost address is invalid (0.0.0.0).
104   Already connected. If you want to reconnect, close the current connection first.
106   You cannot change the LocalPort at this time. A connection is in progress.
107   You cannot change the LocalHost at this time. A connection is in progress.
112   You cannot change MaxLineLength at this time. A connection is in progress.
116   RemotePort cannot be zero. Please specify a valid service port number.
117   You cannot change the UseConnection option while the class is active.
135   Operation would block.
201   Timeout.
211   Action impossible in control's present state.
212   Action impossible while not connected.
213   Action impossible while listening.
301   Timeout.
302   Could not open file.
434   Unable to convert string to selected CodePage.
1105   Already connecting. If you want to reconnect, close the current connection first.
1117   You need to connect first.
1119   You cannot change the LocalHost at this time. A connection is in progress.
1120   Connection dropped by remote host.

SSL Errors

270   Cannot load specified security library.
271   Cannot open certificate store.
272   Cannot find specified certificate.
273   Cannot acquire security credentials.
274   Cannot find certificate chain.
275   Cannot verify certificate chain.
276   Error during handshake.
280   Error verifying certificate.
281   Could not find client certificate.
282   Could not find server certificate.
283   Error encrypting data.
284   Error decrypting data.

TCP/IP Errors

10004   [10004] Interrupted system call.
10009   [10009] Bad file number.
10013   [10013] Access denied.
10014   [10014] Bad address.
10022   [10022] Invalid argument.
10024   [10024] Too many open files.
10035   [10035] Operation would block.
10036   [10036] Operation now in progress.
10037   [10037] Operation already in progress.
10038   [10038] Socket operation on nonsocket.
10039   [10039] Destination address required.
10040   [10040] Message is too long.
10041   [10041] Protocol wrong type for socket.
10042   [10042] Bad protocol option.
10043   [10043] Protocol is not supported.
10044   [10044] Socket type is not supported.
10045   [10045] Operation is not supported on socket.
10046   [10046] Protocol family is not supported.
10047   [10047] Address family is not supported by protocol family.
10048   [10048] Address already in use.
10049   [10049] Cannot assign requested address.
10050   [10050] Network is down.
10051   [10051] Network is unreachable.
10052   [10052] Net dropped connection or reset.
10053   [10053] Software caused connection abort.
10054   [10054] Connection reset by peer.
10055   [10055] No buffer space available.
10056   [10056] Socket is already connected.
10057   [10057] Socket is not connected.
10058   [10058] Cannot send after socket shutdown.
10059   [10059] Too many references, cannot splice.
10060   [10060] Connection timed out.
10061   [10061] Connection refused.
10062   [10062] Too many levels of symbolic links.
10063   [10063] File name is too long.
10064   [10064] Host is down.
10065   [10065] No route to host.
10066   [10066] Directory is not empty
10067   [10067] Too many processes.
10068   [10068] Too many users.
10069   [10069] Disc Quota Exceeded.
10070   [10070] Stale NFS file handle.
10071   [10071] Too many levels of remote in path.
10091   [10091] Network subsystem is unavailable.
10092   [10092] WINSOCK DLL Version out of range.
10093   [10093] Winsock is not loaded yet.
11001   [11001] Host not found.
11002   [11002] Nonauthoritative 'Host not found' (try again or check DNS setup).
11003   [11003] Nonrecoverable errors: FORMERR, REFUSED, NOTIMP.
11004   [11004] Valid name, no data record (check DNS setup).