FTP Component

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The FTP Component can be used to transfer files to and from FTP servers using the FTP protocol.

Syntax

TipsFTP

Remarks

The FTP Component supports both plaintext and Secure Sockets Layer/Transport Layer Security (SSL/TLS) connections. When connecting over Secure Sockets Layer/Transport Layer Security (SSL/TLS) the SSLServerAuthentication event allows you to check the server identity and other security attributes. The SSLStatus event provides information about the SSL handshake. Additional SSL-related settings are also supported through the Config method.

The FTP Component implements a standard FTP client as specified in RFC 959 and RFC 1579 with the added option of SSL security (RFC 2228) in both the protocol and data channels.

The first step in using the component is specifying the RemoteHost, User and Password. The file to upload to or download from is given by the RemoteFile property. The file to download to or upload from is specified by LocalFile. The current path in the server is set by calling ChangeRemotePath. The Passive property is especially useful if the client is behind a firewall, which inhibits incoming connections to higher ports.

If LocalFile is set to something other than an empty string, then files are received in LocalFile, and otherwise data are received through the Transfer event. StartTransfer and EndTransfer are fired at the beginning and end of transmission.

The PITrail event traces the interaction between the client and the server (the FTP protocol interface connection).

Directory listings are received through the DirList event.

Property List


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

AccountThe property includes the user account needed to log in.
ConnectedWhether the component is connected.
DirListCountThe number of records in the DirList arrays.
DirListEntryThis property contains the raw entry as received from the server.
DirListFileNameThis property shows the file name in the last directory listing.
DirListFileSizeThis property shows the file size in the last directory listing.
DirListFileTimeThis property shows the file time in the last directory listing.
DirListIsDirThis property specifies whether entries in the last directory listing are directories.
FirewallAutoDetectWhether to automatically detect and use firewall system settings, if available.
FirewallTypeThe type of firewall to connect through.
FirewallHostThe name or IP address of the firewall (optional).
FirewallPasswordA password if authentication is to be used when connecting through the firewall.
FirewallPortThe Transmission Control Protocol (TCP) port for the firewall Host .
FirewallUserA username if authentication is to be used when connecting through a firewall.
IdleThe current status of the component.
LastReplyThis property indicates the last reply received from the server.
LocalFileThis is the path to a local file for download or upload. If the file exists, it is overwritten.
LocalHostThe name of the local host or user-assigned IP interface through which connections are initiated or accepted.
OverwriteThis indicates whether or not the component should overwrite files during transfer.
PassiveThis controls whether or not to direct the server into a passive mode. It is recommended if behind a firewall.
PasswordThis is the password used to log in.
RemoteFileThis is the name of the remote file for uploading, downloading, and performing other operations.
RemoteHostThis is the domain name or IP address of the FTP server.
RemotePortThis is the port for the FTP service (default is 21).
SSLAcceptServerCertEffectiveDateThe date on which this certificate becomes valid.
SSLAcceptServerCertExpirationDateThe date on which the certificate expires.
SSLAcceptServerCertExtendedKeyUsageA comma-delimited list of extended key usage identifiers.
SSLAcceptServerCertFingerprintThe hex-encoded, 16-byte MD5 fingerprint of the certificate.
SSLAcceptServerCertFingerprintSHA1The hex-encoded, 20-byte SHA-1 fingerprint of the certificate.
SSLAcceptServerCertFingerprintSHA256The hex-encoded, 32-byte SHA-256 fingerprint of the certificate.
SSLAcceptServerCertIssuerThe issuer of the certificate.
SSLAcceptServerCertPrivateKeyThe private key of the certificate (if available).
SSLAcceptServerCertPrivateKeyAvailableWhether a PrivateKey is available for the selected certificate.
SSLAcceptServerCertPrivateKeyContainerThe name of the PrivateKey container for the certificate (if available).
SSLAcceptServerCertPublicKeyThe public key of the certificate.
SSLAcceptServerCertPublicKeyAlgorithmThe textual description of the certificate's public key algorithm.
SSLAcceptServerCertPublicKeyLengthThe length of the certificate's public key (in bits).
SSLAcceptServerCertSerialNumberThe serial number of the certificate encoded as a string.
SSLAcceptServerCertSignatureAlgorithmThe text description of the certificate's signature algorithm.
SSLAcceptServerCertStoreThe name of the certificate store for the client certificate.
SSLAcceptServerCertStorePasswordIf the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.
SSLAcceptServerCertStoreTypeThe type of certificate store for this certificate.
SSLAcceptServerCertSubjectAltNamesComma-separated lists of alternative subject names for the certificate.
SSLAcceptServerCertThumbprintMD5The MD5 hash of the certificate.
SSLAcceptServerCertThumbprintSHA1The SHA-1 hash of the certificate.
SSLAcceptServerCertThumbprintSHA256The SHA-256 hash of the certificate.
SSLAcceptServerCertUsageThe text description of UsageFlags .
SSLAcceptServerCertUsageFlagsThe flags that show intended use for the certificate.
SSLAcceptServerCertVersionThe certificate's version number.
SSLAcceptServerCertSubjectThe subject of the certificate used for client authentication.
SSLAcceptServerCertEncodedThe certificate (PEM/Base64 encoded).
SSLCertEffectiveDateThe date on which this certificate becomes valid.
SSLCertExpirationDateThe date on which the certificate expires.
SSLCertExtendedKeyUsageA comma-delimited list of extended key usage identifiers.
SSLCertFingerprintThe hex-encoded, 16-byte MD5 fingerprint of the certificate.
SSLCertFingerprintSHA1The hex-encoded, 20-byte SHA-1 fingerprint of the certificate.
SSLCertFingerprintSHA256The hex-encoded, 32-byte SHA-256 fingerprint of the certificate.
SSLCertIssuerThe issuer of the certificate.
SSLCertPrivateKeyThe private key of the certificate (if available).
SSLCertPrivateKeyAvailableWhether a PrivateKey is available for the selected certificate.
SSLCertPrivateKeyContainerThe name of the PrivateKey container for the certificate (if available).
SSLCertPublicKeyThe public key of the certificate.
SSLCertPublicKeyAlgorithmThe textual description of the certificate's public key algorithm.
SSLCertPublicKeyLengthThe length of the certificate's public key (in bits).
SSLCertSerialNumberThe serial number of the certificate encoded as a string.
SSLCertSignatureAlgorithmThe text description of the certificate's signature algorithm.
SSLCertStoreThe name of the certificate store for the client certificate.
SSLCertStorePasswordIf the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.
SSLCertStoreTypeThe type of certificate store for this certificate.
SSLCertSubjectAltNamesComma-separated lists of alternative subject names for the certificate.
SSLCertThumbprintMD5The MD5 hash of the certificate.
SSLCertThumbprintSHA1The SHA-1 hash of the certificate.
SSLCertThumbprintSHA256The SHA-256 hash of the certificate.
SSLCertUsageThe text description of UsageFlags .
SSLCertUsageFlagsThe flags that show intended use for the certificate.
SSLCertVersionThe certificate's version number.
SSLCertSubjectThe subject of the certificate used for client authentication.
SSLCertEncodedThe certificate (PEM/Base64 encoded).
SSLProviderThe Secure Sockets Layer/Transport Layer Security (SSL/TLS) implementation to use.
SSLServerCertEffectiveDateThe date on which this certificate becomes valid.
SSLServerCertExpirationDateThe date on which the certificate expires.
SSLServerCertExtendedKeyUsageA comma-delimited list of extended key usage identifiers.
SSLServerCertFingerprintThe hex-encoded, 16-byte MD5 fingerprint of the certificate.
SSLServerCertFingerprintSHA1The hex-encoded, 20-byte SHA-1 fingerprint of the certificate.
SSLServerCertFingerprintSHA256The hex-encoded, 32-byte SHA-256 fingerprint of the certificate.
SSLServerCertIssuerThe issuer of the certificate.
SSLServerCertPrivateKeyThe private key of the certificate (if available).
SSLServerCertPrivateKeyAvailableWhether a PrivateKey is available for the selected certificate.
SSLServerCertPrivateKeyContainerThe name of the PrivateKey container for the certificate (if available).
SSLServerCertPublicKeyThe public key of the certificate.
SSLServerCertPublicKeyAlgorithmThe textual description of the certificate's public key algorithm.
SSLServerCertPublicKeyLengthThe length of the certificate's public key (in bits).
SSLServerCertSerialNumberThe serial number of the certificate encoded as a string.
SSLServerCertSignatureAlgorithmThe text description of the certificate's signature algorithm.
SSLServerCertStoreThe name of the certificate store for the client certificate.
SSLServerCertStorePasswordIf the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.
SSLServerCertStoreTypeThe type of certificate store for this certificate.
SSLServerCertSubjectAltNamesComma-separated lists of alternative subject names for the certificate.
SSLServerCertThumbprintMD5The MD5 hash of the certificate.
SSLServerCertThumbprintSHA1The SHA-1 hash of the certificate.
SSLServerCertThumbprintSHA256The SHA-256 hash of the certificate.
SSLServerCertUsageThe text description of UsageFlags .
SSLServerCertUsageFlagsThe flags that show intended use for the certificate.
SSLServerCertVersionThe certificate's version number.
SSLServerCertSubjectThe subject of the certificate used for client authentication.
SSLServerCertEncodedThe certificate (PEM/Base64 encoded).
SSLStartModeThis property determines how the component starts the Secure Sockets Layer (SSL) negotiation.
StartByteThis is the byte index in RemoteFile and LocalFile from which to start a transmission.
TimeoutThe timeout for the component.
TransferModeThis property indicates the transfer mode (ASCII or binary). If the value is 0 (default), the initial server mode will be used.
UserThis property contains the user identifier to use to log in.

Method List


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

AbortThe method aborts the current upload or download.
AppendThis method appends data from LocalFile to a RemoteFile on an FTP server.
ChangeRemotePathThis method changes the current path on the FTP server.
ChangeTransferModeThis method changes the transfer mode for the current connection.
CheckFileExistsThis method returns True if the file specified by RemoteFile exists on the server.
ConfigSets or retrieves a configuration setting.
ConnectThis method connects to the FTP server without logging in.
DelFileThis method removes a file specified by FileName from an FTP server.
DisconnectThis method disconnects from the server without first logging off.
DoEventsThis method processes events from the internal message queue.
DownloadThis method downloads a RemoteFile from an FTP server.
InterruptThis method interrupts the current method.
ListDirectoryList the current directory specified by ChangeRemotePath on an FTP server.
ListDirectoryLongThis method lists extended directory information for the remote path specified by calling ChangeRemotePath .
LogoffThis method is used to log off from the FTP server by posting a QUIT command.
LogonThis method is used to log on to the FTP RemoteHost using the current User and Password .
MakeDirectoryThis method is used to create a directory on the FTP server.
QueryFileSizeThis returns the size of the file specified by RemoteFile .
QueryFileTimeThis returns the modified time of the file specified by RemoteFile .
QueryRemotePathThis queries the server for the current path.
RmDirThis removes a directory specified by DirName from an FTP server.
RenameFileThis changes the name of RemoteFile to NewName .
ResetThis method will reset the component.
SendCommandThis method sends the exact command directly to the server.
StoreUniqueThis method uploads a file with a unique name to an FTP server.
UploadThis method uploads a file specified by LocalFile to an FTP server.

Event List


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

ConnectionStatusFired to indicate changes in the connection state.
DirListThis event is fired when a directory entry is received.
EndTransferThis event is fired when a file finishes downloading or uploading.
ErrorFired when information is available about errors during data delivery.
PITrailThis event traces the commands sent to the server, and the respective replies.
SSLServerAuthenticationFired after the server presents its certificate to the client.
SSLStatusFired when secure connection progress messages are available.
StartTransferThis event fires when a file starts downloading or uploading.
TransferThis event is fired during the file download or upload.

Config Settings


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

ActiveModeIPAllows the specification of the IP address that the server will connect to for active mode connections.
ActiveModePORTAddressAllows the specification of the PORT address value for active mode connections.
AppendToLocalFileAppend downloaded files to a local file.
ApplyFileMaskLocallyWhether to filter the directory listing locally or on the server.
AutoSelectDataIPAutomatically select the data connection IP.
CalculatePercentDoneEnables or Disables calculating the percent complete for downloads.
CheckTotalEntryWhether to ignore directory listing total lines.
DILingerWhen set to True, DI connections are terminated gracefully.
DILingerTimeTime in seconds to have the DI connection linger.
FileTimeFormatThe format of file time reported by the server.
IgnoreEntriesDirectory entry data to ignore.
MaskSensitiveDataMasks passwords in logs.
ModeZCompressionLevelUsed to specify the level of compression used.
PortRangeAllows the specification of a port range where the component listens for active mode connections.
PreserveFileTimeAttempts to preserve timestamps when transferring files.
RealTimeUploadEnables real time uploading.
RealTimeUploadAgeLimitThe age limit in seconds when using RealTimeUpload.
ReusePISSLSessionInDIWhether the PI SSL session will be reused for the DI connection.
ReuseSSLSessionInDIWhether the SSL session will be reused for the DI connection.
UseClearChannelAllows for the Clear Command Channel (CCC) command.
UseClearDataChannelAllows for the PROT C command.
UseEPSVAllows extended passive mode.
UseMLSDUses listings for machine processing.
UseMLSTUses single file listing for machine processing.
UseModeZAllows compression to be used when transferring data.
UseOldAUTHSSLAllows use of the 'AUTH SSL' command instead of 'AUTH TLS'.
UseProtWhenImplicitSends the PROT P command to the server.
UseRemoteHostAddressForPassiveInstructs the component to use the address specified by RemoteHost when establishing a data connection.
VirtualHostNameSends the HOST command to the server.
ConnectionTimeoutSets a separate timeout value for establishing a connection.
FirewallAutoDetectTells the component 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.
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 component 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.
SSLCACertsA newline separated list of CA certificates to be included when performing an SSL handshake.
SSLCheckCRLWhether to check the Certificate Revocation List for the server certificate.
SSLCheckOCSPWhether to use OCSP to check the status of the server certificate.
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.
UseFIPSCompliantAPITells the component whether or not to use FIPS certified APIs.
UseInternalSecurityAPIWhether or not to use the system security libraries or an internal implementation.

Account Property (FTP Component)

The property includes the user account needed to log in.

Syntax

__property String Account = { read=FAccount, write=FSetAccount };

Default Value

""

Remarks

This property contains the user account to use when logging in. Some servers may require an Account to Logon or to access specific privileges, such as uploading or deleting files.

Data Type

String

Connected Property (FTP Component)

Whether the component is connected.

Syntax

__property bool Connected = { read=FConnected };

Default Value

False

Remarks

This property is used to determine whether or not the component is connected to the remote host. Use the Connect and Disconnect methods to manage the connection.

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

Data Type

Boolean

DirListCount Property (FTP Component)

The number of records in the DirList arrays.

Syntax

__property int DirListCount = { read=FDirListCount };

Default Value

0

Remarks

This property controls the size of the following arrays:

The array indices start at 0 and end at DirListCount - 1.

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

Data Type

Integer

DirListEntry Property (FTP Component)

This property contains the raw entry as received from the server.

Syntax

__property String DirListEntry[int EntryIndex] = { read=FDirListEntry };

Default Value

""

Remarks

This property contains the raw entry as received from the server. It is the complete unparsed entry in the directory listing.

The EntryIndex parameter specifies the index of the item in the array. The size of the array is controlled by the DirListCount property.

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

Data Type

String

DirListFileName Property (FTP Component)

This property shows the file name in the last directory listing.

Syntax

__property String DirListFileName[int EntryIndex] = { read=FDirListFileName };

Default Value

""

Remarks

This property shows the file name in the last directory listing. This also may be the directory name if a directory is being listed. You can tell whether it is a file or a directory by the Boolean DirListIsDir property.

The EntryIndex parameter specifies the index of the item in the array. The size of the array is controlled by the DirListCount property.

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

Data Type

String

DirListFileSize Property (FTP Component)

This property shows the file size in the last directory listing.

Syntax

__property __int64 DirListFileSize[int EntryIndex] = { read=FDirListFileSize };

Default Value

0

Remarks

This property shows the file size in the last directory listing.

The EntryIndex parameter specifies the index of the item in the array. The size of the array is controlled by the DirListCount property.

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

Data Type

Long64

DirListFileTime Property (FTP Component)

This property shows the file time in the last directory listing.

Syntax

__property String DirListFileTime[int EntryIndex] = { read=FDirListFileTime };

Default Value

""

Remarks

This property shows the file time in the last directory listing. This contains the date/time stamp in which the file was created.

Note: In Unix systems, the date is given in two types of formats: If the date is in the past 12 months, the exact time is specified and the year is omitted. Otherwise, only the date and the year, but not hours or minutes, are given.

The EntryIndex parameter specifies the index of the item in the array. The size of the array is controlled by the DirListCount property.

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

Data Type

String

DirListIsDir Property (FTP Component)

This property specifies whether entries in the last directory listing are directories.

Syntax

__property bool DirListIsDir[int EntryIndex] = { read=FDirListIsDir };

Default Value

False

Remarks

This property specifies whether entries in the last directory listing are directories. This Boolean value denotes whether or not the directory entry listed in DirListFileName is a file or a directory.

The EntryIndex parameter specifies the index of the item in the array. The size of the array is controlled by the DirListCount property.

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

Data Type

Boolean

FirewallAutoDetect Property (FTP Component)

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

Syntax

__property bool FirewallAutoDetect = { read=FFirewallAutoDetect, write=FSetFirewallAutoDetect };

Default Value

False

Remarks

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

Data Type

Boolean

FirewallType Property (FTP Component)

The type of firewall to connect through.

Syntax

__property TipsFTPFirewallTypes FirewallType = { read=FFirewallType, write=FSetFirewallType };
enum TipsFTPFirewallTypes { fwNone=0, fwTunnel=1, fwSOCKS4=2, fwSOCKS5=3, fwSOCKS4A=10 };

Default Value

fwNone

Remarks

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. FirewallPort is set to 80.
fwSOCKS4 (2)Connect through a SOCKS4 Proxy. FirewallPort is set to 1080.
fwSOCKS5 (3)Connect through a SOCKS5 Proxy. FirewallPort is set to 1080.
fwSOCKS4A (10)Connect through a SOCKS4A Proxy. FirewallPort is set to 1080.

Data Type

Integer

FirewallHost Property (FTP Component)

The name or IP address of the firewall (optional).

Syntax

__property String FirewallHost = { read=FFirewallHost, write=FSetFirewallHost };

Default Value

""

Remarks

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

If this property is set to a Domain Name, a DNS request is initiated. Upon successful termination of the request, this property is set to the corresponding address. If the search is not successful, the component raises an exception.

Data Type

String

FirewallPassword Property (FTP Component)

A password if authentication is to be used when connecting through the firewall.

Syntax

__property String FirewallPassword = { read=FFirewallPassword, write=FSetFirewallPassword };

Default Value

""

Remarks

A password if authentication is to be used when connecting through the firewall. If FirewallHost is specified, the FirewallUser and FirewallPassword properties are used to connect and authenticate to the given firewall. If the authentication fails, the component raises an exception.

Data Type

String

FirewallPort Property (FTP Component)

The Transmission Control Protocol (TCP) port for the firewall Host .

Syntax

__property int FirewallPort = { read=FFirewallPort, write=FSetFirewallPort };

Default Value

0

Remarks

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

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

Data Type

Integer

FirewallUser Property (FTP Component)

A username if authentication is to be used when connecting through a firewall.

Syntax

__property String FirewallUser = { read=FFirewallUser, write=FSetFirewallUser };

Default Value

""

Remarks

A username if authentication is to be used when connecting through a firewall. If FirewallHost is specified, this property and the FirewallPassword property are used to connect and authenticate to the given Firewall. If the authentication fails, the component raises an exception.

Data Type

String

Idle Property (FTP Component)

The current status of the component.

Syntax

__property bool Idle = { read=FIdle };

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

LastReply Property (FTP Component)

This property indicates the last reply received from the server.

Syntax

__property String LastReply = { read=FLastReply };

Default Value

""

Remarks

This property indicates the last reply received from the server. It can be used for informational purposes. The same information and more also can be retrieved through the PITrail event.

This property is read-only.

Data Type

String

LocalFile Property (FTP Component)

This is the path to a local file for download or upload. If the file exists, it is overwritten.

Syntax

__property String LocalFile = { read=FLocalFile, write=FSetLocalFile };

Default Value

""

Remarks

This property is used by the Upload and Download methods to specify the path to a local file to be downloaded or uploaded. See the method descriptions for more information.

Example (Setting LocalFile)

FTPControl.LocalFile = "C:\localfile.txt" FTPControl.RemoteFile = "remotefile.txt" FTPControl.Download() FTPControl.LocalFile = "C:\localfile2.txt" FTPControl.RemoteFile = "folder/remotefile2.txt" FTPControl.Download()

Data Type

String

LocalHost Property (FTP Component)

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

Syntax

__property String LocalHost = { read=FLocalHost, write=FSetLocalHost };

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 component initiate connections (or accept in the case of server components) 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 component 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

Overwrite Property (FTP Component)

This indicates whether or not the component should overwrite files during transfer.

Syntax

__property bool Overwrite = { read=FOverwrite, write=FSetOverwrite };

Default Value

false

Remarks

This property is a value indicating whether or not the component should overwrite downloaded files. If Overwrite is False, an error will be thrown whenever LocalFile exists before a download operation.

Data Type

Boolean

Passive Property (FTP Component)

This controls whether or not to direct the server into a passive mode. It is recommended if behind a firewall.

Syntax

__property bool Passive = { read=FPassive, write=FSetPassive };

Default Value

true

Remarks

This property controls whether or not to direct the server into a passive mode. Many firewalls will not allow the FTP server to open a connection from outside to the higher ports where the FTP client component expects them to be. If Passive is set to TRUE, the component will use the PASV command instead of the PORT command and thus will direct the server into a passive mode: connections are initiated only by the client.

Data Type

Boolean

Password Property (FTP Component)

This is the password used to log in.

Syntax

__property String Password = { read=FPassword, write=FSetPassword };

Default Value

""

Remarks

This property contains the password used to log in. It must be set before the component connects to the FTP server.

Data Type

String

RemoteFile Property (FTP Component)

This is the name of the remote file for uploading, downloading, and performing other operations.

Syntax

__property String RemoteFile = { read=FRemoteFile, write=FSetRemoteFile };

Default Value

""

Remarks

This property contains the name of the remote file to be uploaded or downloaded and is either an absolute file path or a relative path based on the remote path set by calling ChangeRemotePath.

A number of methods use RemoteFile as an argument.

Example 1. Setting RemoteFile:

FTPControl.LocalFile = "C:\localfile.txt" FTPControl.RemoteFile = "remotefile.txt" FTPControl.Download() FTPControl.LocalFile = "C:\localfile2.txt" FTPControl.RemoteFile = "folder/remotefile2.txt" FTPControl.Download()

Note: As long as file masks are supported by the server, then this property will act as a file mask when performing ListDirectory or ListDirectoryLong. If not supported, then ApplyFileMaskLocally could be set to True to filter the results locally.

Example 2. Using RemoteFile as a file mask: FTPControl.RemoteFile = "*.txt" FTPControl.ListDirectory()

The following special characters are supported for pattern matching:

? Any single character.
* Any characters or no characters (e.g., C*t matches Cat, Cot, Coast, Ct).
[,-] A range of characters (e.g., [a-z], [a], [0-9], [0-9,a-d,f,r-z]).
\ The slash is ignored and exact matching is performed on the next character.

If these characters need to be used as a literal in a pattern, then they must be escaped by surrounding them with brackets []. Note: "]" and "-" do not need to be escaped. See below for the escape sequences:

CharacterEscape Sequence
? [?]
* [*]
[ [[]
\ [\]

For example, to match the value [Something].txt, specify the pattern [[]Something].txt.

Data Type

String

RemoteHost Property (FTP Component)

This is the domain name or IP address of the FTP server.

Syntax

__property String RemoteHost = { read=FRemoteHost, write=FSetRemoteHost };

Default Value

""

Remarks

This property specifies the IP address (IP number in dotted internet format) or the domain name of the FTP server. It is set before a connection is attempted and cannot be changed once a connection is in progress.

If this property is set to a domain name, a DNS request is initiated and upon successful termination of the request, this property is set to the corresponding address. If the search is not successful, an error is returned.

If the component is configured to use a SOCKS firewall, the value assigned to this property may be preceded with an "*". If this is the case, the host name is passed to the firewall unresolved and the firewall performs the DNS resolution.

Data Type

String

RemotePort Property (FTP Component)

This is the port for the FTP service (default is 21).

Syntax

__property int RemotePort = { read=FRemotePort, write=FSetRemotePort };

Default Value

21

Remarks

This property contains the port for the FTP service, which defaults to 21 if not set. A valid port number (a value between 1 and 65535) is required for the connection to take place. The property must be set before a connection is attempted and cannot be changed once a connection is established. Any attempt to change this property while connected will fail with an error.

For an implicit Secure Sockets Layer (SSL), use port 990 (please see the SSLStartMode property for more information).

This property is not available at design time.

Data Type

Integer

SSLAcceptServerCertEffectiveDate Property (FTP Component)

The date on which this certificate becomes valid.

Syntax

__property String SSLAcceptServerCertEffectiveDate = { read=FSSLAcceptServerCertEffectiveDate };

Default Value

""

Remarks

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.

This property is read-only.

Data Type

String

SSLAcceptServerCertExpirationDate Property (FTP Component)

The date on which the certificate expires.

Syntax

__property String SSLAcceptServerCertExpirationDate = { read=FSSLAcceptServerCertExpirationDate };

Default Value

""

Remarks

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.

This property is read-only.

Data Type

String

SSLAcceptServerCertExtendedKeyUsage Property (FTP Component)

A comma-delimited list of extended key usage identifiers.

Syntax

__property String SSLAcceptServerCertExtendedKeyUsage = { read=FSSLAcceptServerCertExtendedKeyUsage };

Default Value

""

Remarks

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

This property is read-only.

Data Type

String

SSLAcceptServerCertFingerprint Property (FTP Component)

The hex-encoded, 16-byte MD5 fingerprint of the certificate.

Syntax

__property String SSLAcceptServerCertFingerprint = { read=FSSLAcceptServerCertFingerprint };

Default Value

""

Remarks

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

This property is read-only.

Data Type

String

SSLAcceptServerCertFingerprintSHA1 Property (FTP Component)

The hex-encoded, 20-byte SHA-1 fingerprint of the certificate.

Syntax

__property String SSLAcceptServerCertFingerprintSHA1 = { read=FSSLAcceptServerCertFingerprintSHA1 };

Default Value

""

Remarks

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

This property is read-only.

Data Type

String

SSLAcceptServerCertFingerprintSHA256 Property (FTP Component)

The hex-encoded, 32-byte SHA-256 fingerprint of the certificate.

Syntax

__property String SSLAcceptServerCertFingerprintSHA256 = { read=FSSLAcceptServerCertFingerprintSHA256 };

Default Value

""

Remarks

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

This property is read-only.

Data Type

String

SSLAcceptServerCertIssuer Property (FTP Component)

The issuer of the certificate.

Syntax

__property String SSLAcceptServerCertIssuer = { read=FSSLAcceptServerCertIssuer };

Default Value

""

Remarks

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

This property is read-only.

Data Type

String

SSLAcceptServerCertPrivateKey Property (FTP Component)

The private key of the certificate (if available).

Syntax

__property String SSLAcceptServerCertPrivateKey = { read=FSSLAcceptServerCertPrivateKey };

Default Value

""

Remarks

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

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

This property is read-only.

Data Type

String

SSLAcceptServerCertPrivateKeyAvailable Property (FTP Component)

Whether a PrivateKey is available for the selected certificate.

Syntax

__property bool SSLAcceptServerCertPrivateKeyAvailable = { read=FSSLAcceptServerCertPrivateKeyAvailable };

Default Value

false

Remarks

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

This property is read-only.

Data Type

Boolean

SSLAcceptServerCertPrivateKeyContainer Property (FTP Component)

The name of the PrivateKey container for the certificate (if available).

Syntax

__property String SSLAcceptServerCertPrivateKeyContainer = { read=FSSLAcceptServerCertPrivateKeyContainer };

Default Value

""

Remarks

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

This property is read-only.

Data Type

String

SSLAcceptServerCertPublicKey Property (FTP Component)

The public key of the certificate.

Syntax

__property String SSLAcceptServerCertPublicKey = { read=FSSLAcceptServerCertPublicKey };

Default Value

""

Remarks

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

This property is read-only.

Data Type

String

SSLAcceptServerCertPublicKeyAlgorithm Property (FTP Component)

The textual description of the certificate's public key algorithm.

Syntax

__property String SSLAcceptServerCertPublicKeyAlgorithm = { read=FSSLAcceptServerCertPublicKeyAlgorithm };

Default Value

""

Remarks

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.

This property is read-only.

Data Type

String

SSLAcceptServerCertPublicKeyLength Property (FTP Component)

The length of the certificate's public key (in bits).

Syntax

__property int SSLAcceptServerCertPublicKeyLength = { read=FSSLAcceptServerCertPublicKeyLength };

Default Value

0

Remarks

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

This property is read-only.

Data Type

Integer

SSLAcceptServerCertSerialNumber Property (FTP Component)

The serial number of the certificate encoded as a string.

Syntax

__property String SSLAcceptServerCertSerialNumber = { read=FSSLAcceptServerCertSerialNumber };

Default Value

""

Remarks

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.

This property is read-only.

Data Type

String

SSLAcceptServerCertSignatureAlgorithm Property (FTP Component)

The text description of the certificate's signature algorithm.

Syntax

__property String SSLAcceptServerCertSignatureAlgorithm = { read=FSSLAcceptServerCertSignatureAlgorithm };

Default Value

""

Remarks

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.

This property is read-only.

Data Type

String

SSLAcceptServerCertStore Property (FTP Component)

The name of the certificate store for the client certificate.

Syntax

__property String SSLAcceptServerCertStore = { read=FSSLAcceptServerCertStore, write=FSetSSLAcceptServerCertStore };
__property DynamicArray<Byte> SSLAcceptServerCertStoreB = { read=FSSLAcceptServerCertStoreB, write=FSetSSLAcceptServerCertStoreB };

Default Value

"MY"

Remarks

The name of the certificate store for the client certificate.

The SSLAcceptServerCertStoreType property denotes the type of the certificate store specified by SSLAcceptServerCertStore. If the store is password-protected, specify the password in SSLAcceptServerCertStorePassword.

SSLAcceptServerCertStore is used in conjunction with the SSLAcceptServerCertSubject property to specify client certificates. If SSLAcceptServerCertStore has a value, and SSLAcceptServerCertSubject or SSLAcceptServerCertEncoded is set, a search for a certificate is initiated. Please see the SSLAcceptServerCertSubject property 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).

Data Type

Byte Array

SSLAcceptServerCertStorePassword Property (FTP Component)

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

Syntax

__property String SSLAcceptServerCertStorePassword = { read=FSSLAcceptServerCertStorePassword, write=FSetSSLAcceptServerCertStorePassword };

Default Value

""

Remarks

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

Data Type

String

SSLAcceptServerCertStoreType Property (FTP Component)

The type of certificate store for this certificate.

Syntax

__property TipsFTPSSLAcceptServerCertStoreTypes SSLAcceptServerCertStoreType = { read=FSSLAcceptServerCertStoreType, write=FSetSSLAcceptServerCertStoreType };
enum TipsFTPSSLAcceptServerCertStoreTypes { cstUser=0, cstMachine=1, cstPFXFile=2, cstPFXBlob=3, cstJKSFile=4, cstJKSBlob=5, cstPEMKeyFile=6, cstPEMKeyBlob=7, cstPublicKeyFile=8, cstPublicKeyBlob=9, cstSSHPublicKeyBlob=10, cstP7BFile=11, cstP7BBlob=12, cstSSHPublicKeyFile=13, cstPPKFile=14, cstPPKBlob=15, cstXMLFile=16, cstXMLBlob=17, cstJWKFile=18, cstJWKBlob=19, cstSecurityKey=20, cstBCFKSFile=21, cstBCFKSBlob=22, cstPKCS11=23, cstAuto=99 };

Default Value

cstUser

Remarks

The type of certificate store for this certificate.

The component supports both public and private keys in a variety of formats. When the cstAuto value is used, the component will automatically determine the type. This property 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 component. 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 SSLAcceptServerCertStore and set SSLAcceptServerCertStorePassword 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.

Data Type

Integer

SSLAcceptServerCertSubjectAltNames Property (FTP Component)

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

Syntax

__property String SSLAcceptServerCertSubjectAltNames = { read=FSSLAcceptServerCertSubjectAltNames };

Default Value

""

Remarks

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

This property is read-only.

Data Type

String

SSLAcceptServerCertThumbprintMD5 Property (FTP Component)

The MD5 hash of the certificate.

Syntax

__property String SSLAcceptServerCertThumbprintMD5 = { read=FSSLAcceptServerCertThumbprintMD5 };

Default Value

""

Remarks

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.

This property is read-only.

Data Type

String

SSLAcceptServerCertThumbprintSHA1 Property (FTP Component)

The SHA-1 hash of the certificate.

Syntax

__property String SSLAcceptServerCertThumbprintSHA1 = { read=FSSLAcceptServerCertThumbprintSHA1 };

Default Value

""

Remarks

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.

This property is read-only.

Data Type

String

SSLAcceptServerCertThumbprintSHA256 Property (FTP Component)

The SHA-256 hash of the certificate.

Syntax

__property String SSLAcceptServerCertThumbprintSHA256 = { read=FSSLAcceptServerCertThumbprintSHA256 };

Default Value

""

Remarks

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.

This property is read-only.

Data Type

String

SSLAcceptServerCertUsage Property (FTP Component)

The text description of UsageFlags .

Syntax

__property String SSLAcceptServerCertUsage = { read=FSSLAcceptServerCertUsage };

Default Value

""

Remarks

The text description of SSLAcceptServerCertUsageFlags.

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.

This property is read-only.

Data Type

String

SSLAcceptServerCertUsageFlags Property (FTP Component)

The flags that show intended use for the certificate.

Syntax

__property int SSLAcceptServerCertUsageFlags = { read=FSSLAcceptServerCertUsageFlags };

Default Value

0

Remarks

The flags that show intended use for the certificate. The value of SSLAcceptServerCertUsageFlags 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 SSLAcceptServerCertUsage property for a text representation of SSLAcceptServerCertUsageFlags.

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

This property is read-only.

Data Type

Integer

SSLAcceptServerCertVersion Property (FTP Component)

The certificate's version number.

Syntax

__property String SSLAcceptServerCertVersion = { read=FSSLAcceptServerCertVersion };

Default Value

""

Remarks

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

This property is read-only.

Data Type

String

SSLAcceptServerCertSubject Property (FTP Component)

The subject of the certificate used for client authentication.

Syntax

__property String SSLAcceptServerCertSubject = { read=FSSLAcceptServerCertSubject, write=FSetSSLAcceptServerCertSubject };

Default Value

""

Remarks

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 property 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.

Data Type

String

SSLAcceptServerCertEncoded Property (FTP Component)

The certificate (PEM/Base64 encoded).

Syntax

__property String SSLAcceptServerCertEncoded = { read=FSSLAcceptServerCertEncoded, write=FSetSSLAcceptServerCertEncoded };
__property DynamicArray<Byte> SSLAcceptServerCertEncodedB = { read=FSSLAcceptServerCertEncodedB, write=FSetSSLAcceptServerCertEncodedB };

Default Value

""

Remarks

The certificate (PEM/Base64 encoded). This property is used to assign a specific certificate. The SSLAcceptServerCertStore and SSLAcceptServerCertSubject properties also may be used to specify a certificate.

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

This property is not available at design time.

Data Type

Byte Array

SSLCertEffectiveDate Property (FTP Component)

The date on which this certificate becomes valid.

Syntax

__property String SSLCertEffectiveDate = { read=FSSLCertEffectiveDate };

Default Value

""

Remarks

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.

This property is read-only.

Data Type

String

SSLCertExpirationDate Property (FTP Component)

The date on which the certificate expires.

Syntax

__property String SSLCertExpirationDate = { read=FSSLCertExpirationDate };

Default Value

""

Remarks

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.

This property is read-only.

Data Type

String

SSLCertExtendedKeyUsage Property (FTP Component)

A comma-delimited list of extended key usage identifiers.

Syntax

__property String SSLCertExtendedKeyUsage = { read=FSSLCertExtendedKeyUsage };

Default Value

""

Remarks

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

This property is read-only.

Data Type

String

SSLCertFingerprint Property (FTP Component)

The hex-encoded, 16-byte MD5 fingerprint of the certificate.

Syntax

__property String SSLCertFingerprint = { read=FSSLCertFingerprint };

Default Value

""

Remarks

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

This property is read-only.

Data Type

String

SSLCertFingerprintSHA1 Property (FTP Component)

The hex-encoded, 20-byte SHA-1 fingerprint of the certificate.

Syntax

__property String SSLCertFingerprintSHA1 = { read=FSSLCertFingerprintSHA1 };

Default Value

""

Remarks

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

This property is read-only.

Data Type

String

SSLCertFingerprintSHA256 Property (FTP Component)

The hex-encoded, 32-byte SHA-256 fingerprint of the certificate.

Syntax

__property String SSLCertFingerprintSHA256 = { read=FSSLCertFingerprintSHA256 };

Default Value

""

Remarks

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

This property is read-only.

Data Type

String

SSLCertIssuer Property (FTP Component)

The issuer of the certificate.

Syntax

__property String SSLCertIssuer = { read=FSSLCertIssuer };

Default Value

""

Remarks

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

This property is read-only.

Data Type

String

SSLCertPrivateKey Property (FTP Component)

The private key of the certificate (if available).

Syntax

__property String SSLCertPrivateKey = { read=FSSLCertPrivateKey };

Default Value

""

Remarks

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

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

This property is read-only.

Data Type

String

SSLCertPrivateKeyAvailable Property (FTP Component)

Whether a PrivateKey is available for the selected certificate.

Syntax

__property bool SSLCertPrivateKeyAvailable = { read=FSSLCertPrivateKeyAvailable };

Default Value

false

Remarks

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

This property is read-only.

Data Type

Boolean

SSLCertPrivateKeyContainer Property (FTP Component)

The name of the PrivateKey container for the certificate (if available).

Syntax

__property String SSLCertPrivateKeyContainer = { read=FSSLCertPrivateKeyContainer };

Default Value

""

Remarks

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

This property is read-only.

Data Type

String

SSLCertPublicKey Property (FTP Component)

The public key of the certificate.

Syntax

__property String SSLCertPublicKey = { read=FSSLCertPublicKey };

Default Value

""

Remarks

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

This property is read-only.

Data Type

String

SSLCertPublicKeyAlgorithm Property (FTP Component)

The textual description of the certificate's public key algorithm.

Syntax

__property String SSLCertPublicKeyAlgorithm = { read=FSSLCertPublicKeyAlgorithm };

Default Value

""

Remarks

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.

This property is read-only.

Data Type

String

SSLCertPublicKeyLength Property (FTP Component)

The length of the certificate's public key (in bits).

Syntax

__property int SSLCertPublicKeyLength = { read=FSSLCertPublicKeyLength };

Default Value

0

Remarks

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

This property is read-only.

Data Type

Integer

SSLCertSerialNumber Property (FTP Component)

The serial number of the certificate encoded as a string.

Syntax

__property String SSLCertSerialNumber = { read=FSSLCertSerialNumber };

Default Value

""

Remarks

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.

This property is read-only.

Data Type

String

SSLCertSignatureAlgorithm Property (FTP Component)

The text description of the certificate's signature algorithm.

Syntax

__property String SSLCertSignatureAlgorithm = { read=FSSLCertSignatureAlgorithm };

Default Value

""

Remarks

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.

This property is read-only.

Data Type

String

SSLCertStore Property (FTP Component)

The name of the certificate store for the client certificate.

Syntax

__property String SSLCertStore = { read=FSSLCertStore, write=FSetSSLCertStore };
__property DynamicArray<Byte> SSLCertStoreB = { read=FSSLCertStoreB, write=FSetSSLCertStoreB };

Default Value

"MY"

Remarks

The name of the certificate store for the client certificate.

The SSLCertStoreType property denotes the type of the certificate store specified by SSLCertStore. If the store is password-protected, specify the password in SSLCertStorePassword.

SSLCertStore is used in conjunction with the SSLCertSubject property to specify client certificates. If SSLCertStore has a value, and SSLCertSubject or SSLCertEncoded is set, a search for a certificate is initiated. Please see the SSLCertSubject property 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).

Data Type

Byte Array

SSLCertStorePassword Property (FTP Component)

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

Syntax

__property String SSLCertStorePassword = { read=FSSLCertStorePassword, write=FSetSSLCertStorePassword };

Default Value

""

Remarks

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

Data Type

String

SSLCertStoreType Property (FTP Component)

The type of certificate store for this certificate.

Syntax

__property TipsFTPSSLCertStoreTypes SSLCertStoreType = { read=FSSLCertStoreType, write=FSetSSLCertStoreType };
enum TipsFTPSSLCertStoreTypes { cstUser=0, cstMachine=1, cstPFXFile=2, cstPFXBlob=3, cstJKSFile=4, cstJKSBlob=5, cstPEMKeyFile=6, cstPEMKeyBlob=7, cstPublicKeyFile=8, cstPublicKeyBlob=9, cstSSHPublicKeyBlob=10, cstP7BFile=11, cstP7BBlob=12, cstSSHPublicKeyFile=13, cstPPKFile=14, cstPPKBlob=15, cstXMLFile=16, cstXMLBlob=17, cstJWKFile=18, cstJWKBlob=19, cstSecurityKey=20, cstBCFKSFile=21, cstBCFKSBlob=22, cstPKCS11=23, cstAuto=99 };

Default Value

cstUser

Remarks

The type of certificate store for this certificate.

The component supports both public and private keys in a variety of formats. When the cstAuto value is used, the component will automatically determine the type. This property 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 component. 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 SSLCertStore and set SSLCertStorePassword 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.

Data Type

Integer

SSLCertSubjectAltNames Property (FTP Component)

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

Syntax

__property String SSLCertSubjectAltNames = { read=FSSLCertSubjectAltNames };

Default Value

""

Remarks

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

This property is read-only.

Data Type

String

SSLCertThumbprintMD5 Property (FTP Component)

The MD5 hash of the certificate.

Syntax

__property String SSLCertThumbprintMD5 = { read=FSSLCertThumbprintMD5 };

Default Value

""

Remarks

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.

This property is read-only.

Data Type

String

SSLCertThumbprintSHA1 Property (FTP Component)

The SHA-1 hash of the certificate.

Syntax

__property String SSLCertThumbprintSHA1 = { read=FSSLCertThumbprintSHA1 };

Default Value

""

Remarks

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.

This property is read-only.

Data Type

String

SSLCertThumbprintSHA256 Property (FTP Component)

The SHA-256 hash of the certificate.

Syntax

__property String SSLCertThumbprintSHA256 = { read=FSSLCertThumbprintSHA256 };

Default Value

""

Remarks

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.

This property is read-only.

Data Type

String

SSLCertUsage Property (FTP Component)

The text description of UsageFlags .

Syntax

__property String SSLCertUsage = { read=FSSLCertUsage };

Default Value

""

Remarks

The text description of SSLCertUsageFlags.

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.

This property is read-only.

Data Type

String

SSLCertUsageFlags Property (FTP Component)

The flags that show intended use for the certificate.

Syntax

__property int SSLCertUsageFlags = { read=FSSLCertUsageFlags };

Default Value

0

Remarks

The flags that show intended use for the certificate. The value of SSLCertUsageFlags 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 SSLCertUsage property for a text representation of SSLCertUsageFlags.

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

This property is read-only.

Data Type

Integer

SSLCertVersion Property (FTP Component)

The certificate's version number.

Syntax

__property String SSLCertVersion = { read=FSSLCertVersion };

Default Value

""

Remarks

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

This property is read-only.

Data Type

String

SSLCertSubject Property (FTP Component)

The subject of the certificate used for client authentication.

Syntax

__property String SSLCertSubject = { read=FSSLCertSubject, write=FSetSSLCertSubject };

Default Value

""

Remarks

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 property 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.

Data Type

String

SSLCertEncoded Property (FTP Component)

The certificate (PEM/Base64 encoded).

Syntax

__property String SSLCertEncoded = { read=FSSLCertEncoded, write=FSetSSLCertEncoded };
__property DynamicArray<Byte> SSLCertEncodedB = { read=FSSLCertEncodedB, write=FSetSSLCertEncodedB };

Default Value

""

Remarks

The certificate (PEM/Base64 encoded). This property is used to assign a specific certificate. The SSLCertStore and SSLCertSubject properties also may be used to specify a certificate.

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

This property is not available at design time.

Data Type

Byte Array

SSLProvider Property (FTP Component)

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

Syntax

__property TipsFTPSSLProviders SSLProvider = { read=FSSLProvider, write=FSetSSLProvider };
enum TipsFTPSSLProviders { sslpAutomatic=0, sslpPlatform=1, sslpInternal=2 };

Default Value

sslpAutomatic

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 component 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 component will select a provider depending on the current platform.

When Automatic is selected, the platform implementation is used by default. When TLS 1.3 is enabled via SSLEnabledProtocols, the internal implementation is used.

Data Type

Integer

SSLServerCertEffectiveDate Property (FTP Component)

The date on which this certificate becomes valid.

Syntax

__property String SSLServerCertEffectiveDate = { read=FSSLServerCertEffectiveDate };

Default Value

""

Remarks

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.

This property is read-only.

Data Type

String

SSLServerCertExpirationDate Property (FTP Component)

The date on which the certificate expires.

Syntax

__property String SSLServerCertExpirationDate = { read=FSSLServerCertExpirationDate };

Default Value

""

Remarks

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.

This property is read-only.

Data Type

String

SSLServerCertExtendedKeyUsage Property (FTP Component)

A comma-delimited list of extended key usage identifiers.

Syntax

__property String SSLServerCertExtendedKeyUsage = { read=FSSLServerCertExtendedKeyUsage };

Default Value

""

Remarks

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

This property is read-only.

Data Type

String

SSLServerCertFingerprint Property (FTP Component)

The hex-encoded, 16-byte MD5 fingerprint of the certificate.

Syntax

__property String SSLServerCertFingerprint = { read=FSSLServerCertFingerprint };

Default Value

""

Remarks

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

This property is read-only.

Data Type

String

SSLServerCertFingerprintSHA1 Property (FTP Component)

The hex-encoded, 20-byte SHA-1 fingerprint of the certificate.

Syntax

__property String SSLServerCertFingerprintSHA1 = { read=FSSLServerCertFingerprintSHA1 };

Default Value

""

Remarks

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

This property is read-only.

Data Type

String

SSLServerCertFingerprintSHA256 Property (FTP Component)

The hex-encoded, 32-byte SHA-256 fingerprint of the certificate.

Syntax

__property String SSLServerCertFingerprintSHA256 = { read=FSSLServerCertFingerprintSHA256 };

Default Value

""

Remarks

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

This property is read-only.

Data Type

String

SSLServerCertIssuer Property (FTP Component)

The issuer of the certificate.

Syntax

__property String SSLServerCertIssuer = { read=FSSLServerCertIssuer };

Default Value

""

Remarks

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

This property is read-only.

Data Type

String

SSLServerCertPrivateKey Property (FTP Component)

The private key of the certificate (if available).

Syntax

__property String SSLServerCertPrivateKey = { read=FSSLServerCertPrivateKey };

Default Value

""

Remarks

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

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

This property is read-only.

Data Type

String

SSLServerCertPrivateKeyAvailable Property (FTP Component)

Whether a PrivateKey is available for the selected certificate.

Syntax

__property bool SSLServerCertPrivateKeyAvailable = { read=FSSLServerCertPrivateKeyAvailable };

Default Value

false

Remarks

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

This property is read-only.

Data Type

Boolean

SSLServerCertPrivateKeyContainer Property (FTP Component)

The name of the PrivateKey container for the certificate (if available).

Syntax

__property String SSLServerCertPrivateKeyContainer = { read=FSSLServerCertPrivateKeyContainer };

Default Value

""

Remarks

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

This property is read-only.

Data Type

String

SSLServerCertPublicKey Property (FTP Component)

The public key of the certificate.

Syntax

__property String SSLServerCertPublicKey = { read=FSSLServerCertPublicKey };

Default Value

""

Remarks

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

This property is read-only.

Data Type

String

SSLServerCertPublicKeyAlgorithm Property (FTP Component)

The textual description of the certificate's public key algorithm.

Syntax

__property String SSLServerCertPublicKeyAlgorithm = { read=FSSLServerCertPublicKeyAlgorithm };

Default Value

""

Remarks

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.

This property is read-only.

Data Type

String

SSLServerCertPublicKeyLength Property (FTP Component)

The length of the certificate's public key (in bits).

Syntax

__property int SSLServerCertPublicKeyLength = { read=FSSLServerCertPublicKeyLength };

Default Value

0

Remarks

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

This property is read-only.

Data Type

Integer

SSLServerCertSerialNumber Property (FTP Component)

The serial number of the certificate encoded as a string.

Syntax

__property String SSLServerCertSerialNumber = { read=FSSLServerCertSerialNumber };

Default Value

""

Remarks

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.

This property is read-only.

Data Type

String

SSLServerCertSignatureAlgorithm Property (FTP Component)

The text description of the certificate's signature algorithm.

Syntax

__property String SSLServerCertSignatureAlgorithm = { read=FSSLServerCertSignatureAlgorithm };

Default Value

""

Remarks

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.

This property is read-only.

Data Type

String

SSLServerCertStore Property (FTP Component)

The name of the certificate store for the client certificate.

Syntax

__property String SSLServerCertStore = { read=FSSLServerCertStore };
__property DynamicArray<Byte> SSLServerCertStoreB = { read=FSSLServerCertStoreB };

Default Value

"MY"

Remarks

The name of the certificate store for the client certificate.

The SSLServerCertStoreType property denotes the type of the certificate store specified by SSLServerCertStore. If the store is password-protected, specify the password in SSLServerCertStorePassword.

SSLServerCertStore is used in conjunction with the SSLServerCertSubject property to specify client certificates. If SSLServerCertStore has a value, and SSLServerCertSubject or SSLServerCertEncoded is set, a search for a certificate is initiated. Please see the SSLServerCertSubject property 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).

This property is read-only.

Data Type

Byte Array

SSLServerCertStorePassword Property (FTP Component)

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

Syntax

__property String SSLServerCertStorePassword = { read=FSSLServerCertStorePassword };

Default Value

""

Remarks

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

This property is read-only.

Data Type

String

SSLServerCertStoreType Property (FTP Component)

The type of certificate store for this certificate.

Syntax

__property TipsFTPSSLServerCertStoreTypes SSLServerCertStoreType = { read=FSSLServerCertStoreType };
enum TipsFTPSSLServerCertStoreTypes { cstUser=0, cstMachine=1, cstPFXFile=2, cstPFXBlob=3, cstJKSFile=4, cstJKSBlob=5, cstPEMKeyFile=6, cstPEMKeyBlob=7, cstPublicKeyFile=8, cstPublicKeyBlob=9, cstSSHPublicKeyBlob=10, cstP7BFile=11, cstP7BBlob=12, cstSSHPublicKeyFile=13, cstPPKFile=14, cstPPKBlob=15, cstXMLFile=16, cstXMLBlob=17, cstJWKFile=18, cstJWKBlob=19, cstSecurityKey=20, cstBCFKSFile=21, cstBCFKSBlob=22, cstPKCS11=23, cstAuto=99 };

Default Value

cstUser

Remarks

The type of certificate store for this certificate.

The component supports both public and private keys in a variety of formats. When the cstAuto value is used, the component will automatically determine the type. This property 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 component. 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 SSLServerCertStore and set SSLServerCertStorePassword 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.

This property is read-only.

Data Type

Integer

SSLServerCertSubjectAltNames Property (FTP Component)

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

Syntax

__property String SSLServerCertSubjectAltNames = { read=FSSLServerCertSubjectAltNames };

Default Value

""

Remarks

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

This property is read-only.

Data Type

String

SSLServerCertThumbprintMD5 Property (FTP Component)

The MD5 hash of the certificate.

Syntax

__property String SSLServerCertThumbprintMD5 = { read=FSSLServerCertThumbprintMD5 };

Default Value

""

Remarks

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.

This property is read-only.

Data Type

String

SSLServerCertThumbprintSHA1 Property (FTP Component)

The SHA-1 hash of the certificate.

Syntax

__property String SSLServerCertThumbprintSHA1 = { read=FSSLServerCertThumbprintSHA1 };

Default Value

""

Remarks

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.

This property is read-only.

Data Type

String

SSLServerCertThumbprintSHA256 Property (FTP Component)

The SHA-256 hash of the certificate.

Syntax

__property String SSLServerCertThumbprintSHA256 = { read=FSSLServerCertThumbprintSHA256 };

Default Value

""

Remarks

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.

This property is read-only.

Data Type

String

SSLServerCertUsage Property (FTP Component)

The text description of UsageFlags .

Syntax

__property String SSLServerCertUsage = { read=FSSLServerCertUsage };

Default Value

""

Remarks

The text description of SSLServerCertUsageFlags.

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.

This property is read-only.

Data Type

String

SSLServerCertUsageFlags Property (FTP Component)

The flags that show intended use for the certificate.

Syntax

__property int SSLServerCertUsageFlags = { read=FSSLServerCertUsageFlags };

Default Value

0

Remarks

The flags that show intended use for the certificate. The value of SSLServerCertUsageFlags 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 SSLServerCertUsage property for a text representation of SSLServerCertUsageFlags.

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

This property is read-only.

Data Type

Integer

SSLServerCertVersion Property (FTP Component)

The certificate's version number.

Syntax

__property String SSLServerCertVersion = { read=FSSLServerCertVersion };

Default Value

""

Remarks

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

This property is read-only.

Data Type

String

SSLServerCertSubject Property (FTP Component)

The subject of the certificate used for client authentication.

Syntax

__property String SSLServerCertSubject = { read=FSSLServerCertSubject };

Default Value

""

Remarks

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 property 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.

This property is read-only.

Data Type

String

SSLServerCertEncoded Property (FTP Component)

The certificate (PEM/Base64 encoded).

Syntax

__property String SSLServerCertEncoded = { read=FSSLServerCertEncoded };
__property DynamicArray<Byte> SSLServerCertEncodedB = { read=FSSLServerCertEncodedB };

Default Value

""

Remarks

The certificate (PEM/Base64 encoded). This property is used to assign a specific certificate. The SSLServerCertStore and SSLServerCertSubject properties also may be used to specify a certificate.

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

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

Data Type

Byte Array

SSLStartMode Property (FTP Component)

This property determines how the component starts the Secure Sockets Layer (SSL) negotiation.

Syntax

__property TipsFTPSSLStartModes SSLStartMode = { read=FSSLStartMode, write=FSetSSLStartMode };
enum TipsFTPSSLStartModes { sslAutomatic=0, sslImplicit=1, sslExplicit=2 };

Default Value

sslAutomatic

Remarks

The SSLStartMode property may have one of the following values:

0 (sslAutomatic)If the remote port is set to the standard plaintext port of the protocol (where applicable), the component will behave the same as if SSLStartMode is set to sslExplicit. In all other cases, SSL negotiation will be implicit (sslImplicit).
1 (sslImplicit)The SSL negotiation will start immediately after the connection is established.
2 (sslExplicit)The component will first connect in plaintext, and then will explicitly start SSL negotiation through a protocol command such as STARTTLS.

Data Type

Integer

StartByte Property (FTP Component)

This is the byte index in RemoteFile and LocalFile from which to start a transmission.

Syntax

__property String StartByte = { read=FStartByte, write=FSetStartByte };

Default Value

"0"

Remarks

This property contains a zero-based index in both RemoteFile and LocalFile that determines the point from which the transmission of data begins. This is useful for resuming interrupted downloads and uploads of files from FTP servers.

Once set, the StartByte index is used for all future downloads and uploads. The property must be reset to "0" for normal downloads and uploads.

The type of the property is a string instead of numeric value to allow for certain implementations that expect an alphanumeric marker for the start index.

In the Transfer event, the TransferredBytes parameter will include the bytes skipped (i.e., it will show StartByte more bytes than actually transferred).

Note: Some FTP servers may not support the FTP REST command. If that is the case with the server you are accessing, you will not be able to use the StartByte property.

This property is not available at design time.

Data Type

String

Timeout Property (FTP Component)

The timeout for the component.

Syntax

__property int Timeout = { read=FTimeout, write=FSetTimeout };

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 component will wait for the operation to complete before returning control.

The component 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 component raises an exception.

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

TransferMode Property (FTP Component)

This property indicates the transfer mode (ASCII or binary). If the value is 0 (default), the initial server mode will be used.

Syntax

__property TipsFTPTransferModes TransferMode = { read=FTransferMode };
enum TipsFTPTransferModes { tmDefault=0, tmASCII=1, tmBinary=2 };

Default Value

tmDefault

Remarks

This property indicates the current transfer mode, which is either ASCII or binary. To change the transfer mode call the ChangeTransferMode method. Possible values for this property are:

tmDefault (0) The initial mode of the FTP server is taken. No change.
tmASCII (1) Files are transferred in ASCII mode (a TYPE A command).
tmBinary (2) Files are transferred in binary mode (a TYPE I command).

This property is read-only.

Data Type

Integer

User Property (FTP Component)

This property contains the user identifier to use to log in.

Syntax

__property String User = { read=FUser, write=FSetUser };

Default Value

""

Remarks

This property contains the user identifier to be used when logging in. It must be set before the component connects to the FTP server.

Data Type

String

Abort Method (FTP Component)

The method aborts the current upload or download.

Syntax

void __fastcall Abort();

Remarks

This method sends an ABOR command to the FTP server. It is used to interrupt file uploads and downloads.

Append Method (FTP Component)

This method appends data from LocalFile to a RemoteFile on an FTP server.

Syntax

void __fastcall Append();

Remarks

This method causes the server-data transfer process (DTP) to accept the data transferred through the data connection and to store the data in a file on the server site. If the file specified in the pathname exists on the server site, then the data shall be appended to that file; otherwise, the file specified in the pathname shall be created on the server site. This method is similar to the Upload method, but the local file specified by LocalFile is appended to RemoteFile on the server as opposed to replacing it, as with the Upload method. RemoteFile is either an absolute path on the server, or a path relative to the current path set by ChangeRemotePath. The server will create a file with that name if it doesn't already exist (similar to upload). If no FTP session is in place, one is automatically created by first calling the Logon method.

ChangeRemotePath Method (FTP Component)

This method changes the current path on the FTP server.

Syntax

void __fastcall ChangeRemotePath(String RemotePath);

Remarks

This method changes the current path on the FTP server to the specified RemotePath. When called, the component will issue a command to the server to change the directory. The RemotePath parameter may hold an absolute or relative path.

Absolute Paths

If the path begins with a /, it is considered an absolute path and must specify the entire path from the root of the server. For instance:

component.ChangeRemotePath("/home/testuser/myfolder");

Relative Paths

If the path does not begin with a /, it is considered a relative path and is resolved in relation to the current directory. For instance, a value of myfolder will indicate a subfolder of the current directory. The special value .. refers to the parent directory of the current path. For instance:

//Change to the 'myfolder' sub-directory component.ChangeRemotePath("myfolder"); //Navigate up two levels and then into the 'another/folder' path. component.ChangeRemotePath("../../another/folder");

ChangeTransferMode Method (FTP Component)

This method changes the transfer mode for the current connection.

Syntax

void __fastcall ChangeTransferMode(int TransferMode);

Remarks

This method optionally changes the transfer mode used for the connection. The TransferMode parameter indicates the new transfer mode to be used.

In many cases, it is not necessary to explicitly change the transfer mode; however, the binary transfer mode is useful to ensure that files are preserved byte-for-byte during the transfer. For instance, when uploading or downloading images or archives, the binary transfer mode will ensure that no line-ending transformations are performed by the server before data are transmitted.

Valid values for the TransferMode parameter are as follows:

0 (Default) Files are transferred using the default mode of the FTP server.
1 (ASCII) Files are transferred in ASCII mode (sends the command "TYPE A").
2 (Binary) Files are transferred in Binary mode (sends the command "TYPE I").

CheckFileExists Method (FTP Component)

This method returns True if the file specified by RemoteFile exists on the server.

Syntax

bool __fastcall CheckFileExists();

Remarks

This method sends a command to the server to determine if the file specified by RemoteFile exists. If the file exists, this method returns true, otherwise it returns false. RemoteFile must be specified before calling this method. For instance: component.ChangeRemotePath("/home/testuser/myfolder"); component.RemoteFile = "test.txt"; if(component.CheckFileExists()) { //Do something }

Config Method (FTP Component)

Sets or retrieves a configuration setting.

Syntax

String __fastcall Config(String ConfigurationString);

Remarks

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

These settings are similar in functionality to properties, but they are rarely used. In order to avoid "polluting" the property namespace of the component, 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.

Connect Method (FTP Component)

This method connects to the FTP server without logging in.

Syntax

void __fastcall Connect();

Remarks

This method establishes a connection with the RemoteHost but does not log in. In most cases, it is recommended to use the Logon method, which will both establish a connection and log in to the server.

This method may be useful in cases in which it is desirable to separate the connection and logon operations, for instance, confirming that a host is available by first creating the connection.

DelFile Method (FTP Component)

This method removes a file specified by FileName from an FTP server.

Syntax

void __fastcall DelFile(String FileName);

Remarks

Disconnect Method (FTP Component)

This method disconnects from the server without first logging off.

Syntax

void __fastcall Disconnect();

Remarks

This method immediately disconnects from the server without first logging off.

In most cases, the Logoff method should be used to log off and disconnect from the server. Call the Disconnect method in cases in which it is desirable to immediately disconnect without first logging off.

DoEvents Method (FTP Component)

This method processes events from the internal message queue.

Syntax

void __fastcall DoEvents();

Remarks

When DoEvents is called, the component processes any available events. If no events are available, it waits for a preset period of time, and then returns.

Download Method (FTP Component)

This method downloads a RemoteFile from an FTP server.

Syntax

void __fastcall Download();

Remarks

This method is used to download the remote file specified by RemoteFile to the local file specified by LocalFile, or it is retrieved through the Transfer event if the LocalFile property is "" (empty string). RemoteFile is either an absolute path on the server or a path relative to a remote path set by calling ChangeRemotePath. If no FTP session is in place, one is automatically created by first calling the Logon method.

Example (Download a File)

FTPControl.LocalFile = "C:\localfile.txt" FTPControl.RemoteFile = "remotefile.txt" FTPControl.Download() FTPControl.LocalFile = "C:\localfile2.txt" FTPControl.RemoteFile = "folder/remotefile2.txt" FTPControl.Download()

Interrupt Method (FTP Component)

This method interrupts the current method.

Syntax

void __fastcall Interrupt();

Remarks

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

ListDirectory Method (FTP Component)

List the current directory specified by ChangeRemotePath on an FTP server.

Syntax

void __fastcall ListDirectory();

Remarks

This method is used to list the directory (or file mask) specified in RemoteFile. RemoteFile is either an absolute path on the server, or a path relative to the remote path set by ChangeRemotePath. The file listing is received through the DirList event.

Similar to ListDirectoryLong, except that only file names are returned.

Note: Because RemoteFile acts as a file mask, to retrieve a complete directory listing RemoteFile should be set to an empty string or a mask like "*". If no FTP session is in place, one is automatically created by first calling the Logon method.

ListDirectoryLong Method (FTP Component)

This method lists extended directory information for the remote path specified by calling ChangeRemotePath .

Syntax

void __fastcall ListDirectoryLong();

Remarks

This method is used to request a directory (or file mask) listing specified in RemoteFile. RemoteFile is either an absolute path on the server, or a path relative to the remote path set by calling ChangeRemotePath. The file listing is received through the DirList event. Extended file information is returned.

Note: Because RemoteFile acts as a file mask, to retrieve a complete directory listing RemoteFile should be set to empty string or a mask like "*". If no FTP session is in place, one is automatically created by first calling the Logon method.

Logoff Method (FTP Component)

This method is used to log off from the FTP server by posting a QUIT command.

Syntax

void __fastcall Logoff();

Remarks

This method is used to log off from the FTP server by posting a QUIT command. If that fails, the connection is terminated by the local host.

Logon Method (FTP Component)

This method is used to log on to the FTP RemoteHost using the current User and Password .

Syntax

void __fastcall Logon();

Remarks

This method is used to log on to the FTP server using the current User and Password. If TransferMode is not 0 (Default), then the FTP transfer mode is set to the appropriate value.

Example (Logging On)

FTPControl.RemoteHost = "ftpserver" FTPControl.User = "username" FTPControl.Password = "password" FTPControl.Logon()

MakeDirectory Method (FTP Component)

This method is used to create a directory on the FTP server.

Syntax

void __fastcall MakeDirectory(String NewDir);

Remarks

This method is used to create a directory with a path specified by NewDir on the FTP server. NewDir is either an absolute path on the server, or a path relative to the remote path that is set by calling ChangeRemotePath. If no FTP session is in place, one is automatically created by first calling the Logon method.

Note: When MakeDirectory is called, RemoteFile is changed to NewDir.

QueryFileSize Method (FTP Component)

This returns the size of the file specified by RemoteFile .

Syntax

__int64 __fastcall QueryFileSize();

Remarks

This method sends the SIZE command to the server to obtain the size (in bytes) of the file specified by RemoteFile. RemoteFile must be specified before calling this method. For instance: component.ChangeRemotePath("/home/testuser/myfolder"); component.RemoteFile = "test.txt"; long myFileSize = component.QueryFileSize();

If RemoteFile does not exist on the server, the component raises an exception.

QueryFileTime Method (FTP Component)

This returns the modified time of the file specified by RemoteFile .

Syntax

String __fastcall QueryFileTime();

Remarks

This method sends the MDTM command to the server to obtain the modified time of the file specified by RemoteFile. The time returned by this method will be converted to the local timezone. RemoteFile must be specified before calling this method. For instance: component.ChangeRemotePath("/home/testuser/myfolder"); component.RemoteFile = "test.txt"; string myModifiedTime = component.QueryFileTime();

The FileTimeFormat configuration setting controls the format of the returned value.

QueryRemotePath Method (FTP Component)

This queries the server for the current path.

Syntax

String __fastcall QueryRemotePath();

Remarks

This method queries the server for the current path. When called, the component will issue a command to the server to retrieve the current path value. The return value of this method is the path returned by the server. For instance:

string remotePath = component.QueryRemotePath();

RmDir Method (FTP Component)

This removes a directory specified by DirName from an FTP server.

Syntax

void __fastcall RmDir(String DirName);

Remarks

RenameFile Method (FTP Component)

This changes the name of RemoteFile to NewName .

Syntax

void __fastcall RenameFile(String NewName);

Remarks

This method is used to change the name of a remote file, specified by RemoteFile to NewName. RemoteFile and NewName are either absolute paths on the server, or a path relative to a remote path set by calling ChangeRemotePath. If no FTP session is in place, one is automatically created by first calling the Logon method.

Reset Method (FTP Component)

This method will reset the component.

Syntax

void __fastcall Reset();

Remarks

This method will reset the component's properties to their default values.

SendCommand Method (FTP Component)

This method sends the exact command directly to the server.

Syntax

void __fastcall SendCommand(String Command);

Remarks

This method sends the command specified by Command to the server exactly as it is provided. Use this method to send additional or custom commands directly to the server.

After calling this method, check the LastReply property or monitor the PITrail event to obtain the server's response.

StoreUnique Method (FTP Component)

This method uploads a file with a unique name to an FTP server.

Syntax

void __fastcall StoreUnique();

Remarks

This method is used to upload a file with a unique name to an FTP server. This is similar to the Upload method, but the server determines a unique name for the LocalFile to be saved on the current directory set by calling ChangeRemotePath. The server includes the new name of the file in its response. The user should check the PITrail event, or LastReply property to retrieve this generated filename.

Upload Method (FTP Component)

This method uploads a file specified by LocalFile to an FTP server.

Syntax

void __fastcall Upload();

Remarks

This method uploads a local file specified by LocalFile to the remote file specified by RemoteFile. RemoteFile is either an absolute path on the server, or a path relative to the remote path set by calling ChangeRemotePath. If no FTP session is in place, one is automatically created by first calling the Logon method.

If you want to append to a server file, please refer to the Append method.

Example 1: Upload a File

FTPControl.LocalFile = "C:\localfile.txt" FTPControl.RemoteFile = "remotefile.txt" FTPControl.Upload() FTPControl.LocalFile = "C:\localfile2.txt" FTPControl.RemoteFile = "folder/remotefile2.txt" FTPControl.Upload()

ConnectionStatus Event (FTP Component)

Fired to indicate changes in the connection state.

Syntax

typedef struct {
  String ConnectionEvent;
  int StatusCode;
  String Description;
} TipsFTPConnectionStatusEventParams;
typedef void __fastcall (__closure *TipsFTPConnectionStatusEvent)(System::TObject* Sender, TipsFTPConnectionStatusEventParams *e);
__property TipsFTPConnectionStatusEvent OnConnectionStatus = { read=FOnConnectionStatus, write=FOnConnectionStatus };

Remarks

This event is fired when the connection state changes: for example, completion of a firewall or proxy connection or completion of a security handshake.

The ConnectionEvent parameter indicates the type of connection event. Values may include the following:

Firewall connection complete.
Secure Sockets Layer (SSL) or S/Shell handshake complete (where applicable).
Remote host connection complete.
Remote host disconnected.
SSL or S/Shell connection broken.
Firewall host disconnected.
StatusCode has the error code returned by the Transmission Control Protocol (TCP)/IP stack. Description contains a description of this code. The value of StatusCode is equal to the value of the error.

DirList Event (FTP Component)

This event is fired when a directory entry is received.

Syntax

typedef struct {
  String DirEntry;
  String FileName;
  bool IsDir;
  __int64 FileSize;
  String FileTime;
} TipsFTPDirListEventParams;
typedef void __fastcall (__closure *TipsFTPDirListEvent)(System::TObject* Sender, TipsFTPDirListEventParams *e);
__property TipsFTPDirListEvent OnDirList = { read=FOnDirList, write=FOnDirList };

Remarks

The DirList events are fired when a directory listing is received as a response to a ListDirectory or ListDirectoryLong call.

The StartTransfer and EndTransfer events mark the beginning and end of the event stream.

The DirEntry parameter contains the filename when ListDirectory is called and includes extended file information when ListDirectoryLong is called.

The component tries to fill out the FileName, IsDir, FileSize, and FileTime parameters when calling the ListDirectoryLong method. Except for FileName, these parameters are empty when a short "List Directory" is performed.

In Unix systems, the date is given in two types of formats: If the date is in the past 12 months the exact time is specified and the year is omitted. Otherwise, only the date and the year, but not hours or minutes, are given.

EndTransfer Event (FTP Component)

This event is fired when a file finishes downloading or uploading.

Syntax

typedef struct {
  int Direction;
} TipsFTPEndTransferEventParams;
typedef void __fastcall (__closure *TipsFTPEndTransferEvent)(System::TObject* Sender, TipsFTPEndTransferEventParams *e);
__property TipsFTPEndTransferEvent OnEndTransfer = { read=FOnEndTransfer, write=FOnEndTransfer };

Remarks

The EndTransfer event fires when a Data Interface connection is closed. This occurs when the file finishes transferring or a directory listing is finished.

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

Error Event (FTP Component)

Fired when information is available about errors during data delivery.

Syntax

typedef struct {
  int ErrorCode;
  String Description;
} TipsFTPErrorEventParams;
typedef void __fastcall (__closure *TipsFTPErrorEvent)(System::TObject* Sender, TipsFTPErrorEventParams *e);
__property TipsFTPErrorEvent OnError = { read=FOnError, write=FOnError };

Remarks

The Error event is fired in case of exceptional conditions during message processing. Normally the component raises an exception.

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.

PITrail Event (FTP Component)

This event traces the commands sent to the server, and the respective replies.

Syntax

typedef struct {
  int Direction;
  String Message;
} TipsFTPPITrailEventParams;
typedef void __fastcall (__closure *TipsFTPPITrailEvent)(System::TObject* Sender, TipsFTPPITrailEventParams *e);
__property TipsFTPPITrailEvent OnPITrail = { read=FOnPITrail, write=FOnPITrail };

Remarks

The PITrail event is useful for debugging purposes. It shows all of the interactions between the client and the server, line by line.

The Message parameter contains the full text of the message. The Direction parameter shows the originator of the message:

0 (Client)The Message originates from the client.
1 (Server)The Message originates from the server.
2 (Info)The Message is an informative message originating from the client software (the component code).

SSLServerAuthentication Event (FTP Component)

Fired after the server presents its certificate to the client.

Syntax

typedef struct {
  String CertEncoded;
  DynamicArray<Byte> CertEncodedB;
  String CertSubject;
  String CertIssuer;
  String Status;
  bool Accept;
} TipsFTPSSLServerAuthenticationEventParams;
typedef void __fastcall (__closure *TipsFTPSSLServerAuthenticationEvent)(System::TObject* Sender, TipsFTPSSLServerAuthenticationEventParams *e);
__property TipsFTPSSLServerAuthenticationEvent OnSSLServerAuthentication = { read=FOnSSLServerAuthentication, write=FOnSSLServerAuthentication };

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 (FTP Component)

Fired when secure connection progress messages are available.

Syntax

typedef struct {
  String Message;
} TipsFTPSSLStatusEventParams;
typedef void __fastcall (__closure *TipsFTPSSLStatusEvent)(System::TObject* Sender, TipsFTPSSLStatusEventParams *e);
__property TipsFTPSSLStatusEvent OnSSLStatus = { read=FOnSSLStatus, write=FOnSSLStatus };

Remarks

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

StartTransfer Event (FTP Component)

This event fires when a file starts downloading or uploading.

Syntax

typedef struct {
  int Direction;
} TipsFTPStartTransferEventParams;
typedef void __fastcall (__closure *TipsFTPStartTransferEvent)(System::TObject* Sender, TipsFTPStartTransferEventParams *e);
__property TipsFTPStartTransferEvent OnStartTransfer = { read=FOnStartTransfer, write=FOnStartTransfer };

Remarks

The StartTransfer event fires when a Data Interface connection is created. This is when the file starts transferring or a directory listing is started.

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

Transfer Event (FTP Component)

This event is fired during the file download or upload.

Syntax

typedef struct {
  int Direction;
  __int64 BytesTransferred;
  int PercentDone;
  String Text;
  DynamicArray<Byte> TextB;
} TipsFTPTransferEventParams;
typedef void __fastcall (__closure *TipsFTPTransferEvent)(System::TObject* Sender, TipsFTPTransferEventParams *e);
__property TipsFTPTransferEvent OnTransfer = { read=FOnTransfer, write=FOnTransfer };

Remarks

One or more Transfer events are fired during file transfer. The BytesTransferred parameter shows the number of bytes transferred since the beginning of the transfer.

Text contains the portion of the file data being delivered.

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.

Config Settings (FTP Component)

The component 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 component, access to these internal properties is provided through the Config method.

FTP Config Settings

ActiveModeIP:   Allows the specification of the IP address that the server will connect to for active mode connections.

The ActiveModeIP configuration setting can be used to specify the IP address that the server will connect to when using an active mode configuration (Passive = False). When this configuration setting is set, the port number where the component listens for active mode connections will still be managed by the component. The PortRange also can be used to ensure that the correct port is used by the client.

Note: This configuration setting will be ignored if ActiveModePORTAddress is also specified.

ActiveModePORTAddress:   Allows the specification of the PORT address value for active mode connections.

When using an active mode configuration (Passive = False) with a firewall, it may be necessary to specify the actual PORT value to be sent to the server. ActiveModePORTAddress takes the protocol-level parameter in the form "a,b,c,d,e,f" where "a,b,c,d" is the external IP address separated by commas, and e and f represent, respectively, the high-byte (divide by 256) and the low-byte (mod 256) values of the external port where the FTP client is listening.

This configuration setting must be used in conjunction with PortRange to ensure that the correct port is used by the client.

AppendToLocalFile:   Append downloaded files to a local file.

If set to True, the downloaded files will be appended to the file specified in LocalFile.

ApplyFileMaskLocally:   Whether to filter the directory listing locally or on the server.

If set to true any filemask provided to RemoteFile will be applied locally, after the server has returned the results. When set to false (default), the value in RemoteFile will be sent to the server as part of the relevant listing command. Because using filemasks with list commands is not standardized, some servers do not support them and will return an error.

AutoSelectDataIP:   Automatically select the data connection IP.

This setting controls the selection logic of the data connection. By default, this value is True and the component will attempt to determine the best IP for the data connection based on the returned value from the server. It is recommended to leave this value set to True unless there is a reason to disable it.

In many cases, FTP servers are not configured to return a valid public IP in the PASV response. When Secure Sockets Layer/Transport Layer Security (SSL/TLS) is used any network address translation (NAT) done by the firewall cannot occur. The result is the client may receive an IP that is not accessible.

This setting is designed to allow the connection to succeed in as many cases as possible. When the IP for the data connection is received from the server, the component will inspect the value. If the received value is not within the known private IP ranges, the component will use it, assuming it is a valid public IP. If the received value is a private IP, the component will instead assume the data connection should be established to the same IP as the command connection (true in almost all cases).

When this setting is False, the component will not perform any checks on the received value. When set to False, UseRemoteHostAddressForPassive is applicable.

CalculatePercentDone:   Enables or Disables calculating the percent complete for downloads.

When set to true (default), the component sends an FTP SIZE command to retrieve the file size before beginning a download. When downloading a large quantity of small files, performance may be increased by disabling this feature.

CheckTotalEntry:   Whether to ignore directory listing total lines.

Some servers will include "total" information when returning a directory listing that contains non-entry data. When CheckTotalEntry is set to True (default), the component will ignore lines beginning with "total" to account for this. In some cases, it may be desirable to include these lines in the resulting DirList data; this can be done by setting this configuration setting to False.

DILinger:   When set to True, DI connections are terminated gracefully.

This property controls how the DI connection is closed. The default is True.

In the case that DILinger is True (default), follow two scenarios to determine how long the connection will linger. In the first scenario, if DILingerTime is 0 (default), the system will attempt to send pending data for a connection until the default IP timeout expires.

In the second scenario, DILingerTime is a positive value, the system will attempt to send pending data until the specified DILingerTime 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 component 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 (by a client acknowledgment, for example), setting this property to False might be the appropriate course of action.

DILingerTime:   Time in seconds to have the DI connection linger.

LingerTime is the time, in seconds, to let the socket connection linger. This value is 0 by default, which means it will use the default IP timeout.

FileTimeFormat:   The format of file time reported by the server.

The default value is "M/d/yyyy hh:mm:ss tt". When set, the component will format the time returned by the server when calling the QueryFileTime method. To disable all formatting, set this to empty string.

This setting applies only when calling QueryFileTime. It does not apply to the FileTime parameter of the DirList event.

IgnoreEntries:   Directory entry data to ignore.

Sometimes the FTP server will return data in a directory listing that is not entry data and can be ignored. The IgnoreEntries configuration setting takes a comma-separated list of entries to ignore. Only the beginning of the entries need to be specified and correct case is not required.

MaskSensitiveData:   Masks passwords in logs.

The default value is True. When set to True, the component will mask passwords that otherwise would appear in its logs.

ModeZCompressionLevel:   Used to specify the level of compression used.

The default value is 7. Valid values range from 0 to 9. A higher value indicates that a higher compression level is being used. This is valid only when UseModeZ is set to True.

PortRange:   Allows the specification of a port range where the component listens for active mode connections.

When set to use active mode (Passive = False), the component uses any available port to listen to incoming connections from the server. You can override this behavior by setting PortRange to a value containing the range of ports the component will be listening to.

The range is provided as start-end, for instance: "1024-" stands for anything higher than 1024, "1024-2048" stands for ports between 1024 and 2048 inclusive, "4000-4010, 50000-50010" stands for ports between 4000 and 4010 or between 50000 and 50010.

PreserveFileTime:   Attempts to preserve timestamps when transferring files.

When set to True, the component will try to preserve timestamps when transferring files. The MDTM command is used when downloading, and the MFTM command is used when uploading. The server must support these commands for this to work and is False by default.

RealTimeUpload:   Enables real time uploading.

When this value is set to True, the component will upload the data in the file specified by LocalFile and continue monitoring LocalFile for additional data to upload until no new data is found for RealTimeUploadAgeLimit seconds. This allows you to start uploading a file immediately after the file is created and continue uploading as data is written to the file. The default value is False.

RealTimeUploadAgeLimit:   The age limit in seconds when using RealTimeUpload.

This value is only applicable when RealTimeUpload is set to "True". This specifies the number of seconds for which the component will monitor LocalFile for new data to upload. If this limit is reached and no new data are found in LocalFile the upload will complete. The default value is "1".

ReusePISSLSessionInDI:   Whether the PI SSL session will be reused for the DI connection.

When set to True (default), the component will reuse the PI SSL session when creating the DI connection. When set to False, the component will create a separate SSL session for the DI connection. The default value is True.

ReuseSSLSessionInDI:   Whether the SSL session will be reused for the DI connection.

When set to True (default), the component will ask the server to reuse the existing DI Secure Sockets Layer (SSL) session. When set to False, a new SSL session will always be created for the DI connection.

UseClearChannel:   Allows for the Clear Command Channel (CCC) command.

When this is set, the component will send the CCC command to the server requesting a clear (unprotected) command channel.

UseClearDataChannel:   Allows for the PROT C command.

When this is set, the component will use a clear (unprotected) data channel by sending the PROT C command to the server.

UseEPSV:   Allows extended passive mode.

When this is set, the extended passive mode will be used.

UseMLSD:   Uses listings for machine processing.

When this is set to True, the component will list files in the directory using the MLSD command. This command is an extension to the protocol that defines a more standardized and reliable directory listing format. Not all servers support this command. The default value is False.

When set to True, set RemoteFile to the filemask and call either ListDirectory or ListDirectoryLong. There is no difference between the two methods when this setting is enabled.

UseMLST:   Uses single file listing for machine processing.

This setting is similar to UseMLSD except that it is valid only for a single file. When this is set to True, the component will list the file or folder specified by RemoteFile. If RemoteFile is not set, a listing for the current directory will be returned. This command is an extension to the protocol, which defines a more standardized and reliable directory listing format, but does so only for a single file or folder. Not all servers support this command. The default value is False.

When set to True, set RemoteFile to the file or folder you wish to get information about and call either ListDirectory or ListDirectoryLong. There is no difference between the two methods when this setting is enabled. When both UseMLSD and UseMLST are set, UseMLSD takes precedence.

UseModeZ:   Allows compression to be used when transferring data.

The default value is False. When set to True, the component will issue the MODE Z command to the FTP server. This will enable deflate compression so that all data transferred are first compressed either by the server (when downloading) or by the component (when uploading). Note: Not all servers support this feature.

UseOldAUTHSSL:   Allows use of the 'AUTH SSL' command instead of 'AUTH TLS'.

By default, the component uses the standard AUTH TLS command to initiate the SSL handshake with the server. This configuration setting is included for optional support of older servers that support only the AUTH SSL command.

Note: Using AUTH SSL instead of AUTH TLS is strongly discouraged because of potential security vulnerabilities. If you must use this configuration setting, please do so very carefully.

UseProtWhenImplicit:   Sends the PROT P command to the server.

When SSLStartMode is set to sslImplicit, setting this to True will instruct the component to send the PROT P command to the server. This explicitly tells the server that the data channel will be protected. The default value is True.

UseRemoteHostAddressForPassive:   Instructs the component to use the address specified by RemoteHost when establishing a data connection.

When this setting is True, the component will use the address specified by RemoteHost when establishing a data connection for directory listings and file transfers. This setting is applicable only when AutoSelectDataIP is set to False.

When this setting is False (default) and AutoSelectDataIP is also False, the component will use the IP address returned by the server when establishing a data connection.

This setting is not applicable when Passive is set to False (Active mode).

VirtualHostName:   Sends the HOST command to the server.

Defined in RFC 7151, the HOST command allows user-FTP processes to specify which virtual host to connect to for a server-FTP process that is handling requests for multiple virtual hosts on a single IP address. When this configuration setting is set, the HOST command is sent to the server before authenticating.

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 component will use Timeout for establishing a connection and transmitting/receiving data.

FirewallAutoDetect:   Tells the component whether or not to automatically detect and use firewall system settings, if available.

This configuration setting is provided for use by components 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 components 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 component raises an exception.

Note: This setting is provided for use by components 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 components 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 components 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 component raises an exception.

Note: This setting is provided for use by components 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.

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 component 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 component initiate connections (or accept in the case of server components) only through that interface.

If the component 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 component binds.

This configuration setting must be set before a connection is attempted. It instructs the component 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 component will use IPv4 exclusively. When set to 1, the component will use IPv6 exclusively. To instruct the component 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 component 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 component is the same.

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-----

SSLCheckCRL:   Whether to check the Certificate Revocation List for the server certificate.

This configuration setting specifies whether the component will check the Certificate Revocation List (CRL) specified by the server certificate. If set to 1 or 2, the component will first obtain the list of CRL URLs from the server certificate's CRL distribution points extension. The component will then make HTTP requests to each CRL endpoint to check the validity of the server's certificate. If the certificate has been revoked or any other issues are found during validation the component raises an exception.

When set to 0 (default), the CRL check will not be performed by the component. When set to 1, it will attempt to perform the CRL check, but it will continue without an error if the server's certificate does not support CRL. When set to 2, it will perform the CRL check and will throw an error if CRL is not supported.

This configuration setting is supported only in the Java, C#, and C++ editions. In the C++ edition, it is supported only on Windows operating systems.

SSLCheckOCSP:   Whether to use OCSP to check the status of the server certificate.

This configuration setting specifies whether the component will use OCSP to check the validity of the server certificate. If set to 1 or 2, the component will first obtain the Online Certificate Status Protocol (OCSP) URL from the server certificate's OCSP extension. The component will then locate the issuing certificate and make an HTTP request to the OCSP endpoint to check the validity of the server's certificate. If the certificate has been revoked or any other issues are found during validation, the component raises an exception.

When set to 0 (default), the component will not perform an OCSP check. When set to 1, it will attempt to perform the OCSP check, but it will continue without an error if the server's certificate does not support OCSP. When set to 2, it will perform the OCSP check and will throw an error if OCSP is not supported.

This configuration setting is supported only in the Java, C#, and C++ editions. In the C++ edition, it is supported only on Windows operating systems.

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 component 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 component 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 component 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 component 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 component 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 component 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 component raises an exception.

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 component 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 component 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 component 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 components: AS3Receiver, AS3Sender, Atom, Client(3DS), FTP, FTPServer, IMAP, OFTPClient, SSHClient, SCP, Server(3DS), Sexec, SFTP, SFTPServer, SSHServer, TCPClient, TCPServer.

UseFIPSCompliantAPI:   Tells the component whether or not to use FIPS certified APIs.

When set to true, the component 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 components 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 component will use the system security libraries by default to perform cryptographic functions where applicable.

Setting this configuration setting to true tells the component to use the internal implementation instead of using the system security libraries.

This setting is set to false by default on all platforms.

Trappable Errors (FTP Component)

FTP Errors

118   Firewall error. The error description contains detailed information.
141   FTP error. The error message contains the server reply.
142   Communication error. The error message contains the description.
143   Busy executing current method.
144   Local file error. The error description contains detailed information.
145   Can't open LocalFile for reading.
146   No RemoteFile specified while uploading.
147   Data interface error. The error description contains detailed information.
148   LocalFile already exists and overwrite is False.
149   Windows message queue dropped a message (typically due to heavy load).
301   Operation is interrupted.
302   Can't open local file.
311   Accept failed for data connection.
312   Asynchronous select failed for data connection.

The component may also return one of the following error codes, which are inherited from other components.

SSLClient 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 component 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).