OFTPServer Class

Properties Methods Events Config Settings Errors

The OFTPServer class implements the server side of the Odette File Transfer Protocol.

Syntax

class ipworksedi.OFTPServer

Remarks

The OFTPServer component implements an OFTP server. It is a lightweight server that supports version 1.2, 1.3, 1.4, and 2.0 of OFTP.

Sending and Receiving Files

To use the class first decide if you will support TLS/SSL connections or not. If use_ssl is set to true, all clients will be expected to connect in TLS/SSL. If use_ssl is set to false (default), all clients are expected to connect in plaintext. If use_ssl is true, only clients that support Version 2.0 of the protocol can connect.

Once you have decided whether or not to support TLS/SSL, specify the port you wish the server to listen on in local_port. By default this value is 3305.

Next, specify values for server_ssid_code, server_sfid_code, server_password.

Then set listening to true to start listening for incoming requests.

When a client connects, you will have an opportunity to authenticate the client before continuing the connection. This is done when the on_accept_connection event fires. Within this event you can validate that the connecting client has access based on rules you determine. If you wish to reject the connection set the Accept parameter to false. Within this event you can also specify the directory to which files sent by the client to the server are saved. It is necessary to specify the directory within this event, as the client can start sending files as soon as the connection is complete. To specify the download directory set the oftp_connection_download_directory property. For instance: oftpserver1.SetOFTPConnectionDownloadDirectory(e->ConnectionId, "C:\\Downloads");

When the connection is complete, the client may send files. If the client does send a file the on_accept_file event will fire and you will have the opportunity to reject the file by setting the Accept parameter of the event. In addition you will have a chance to change the filename by setting the Filename parameter if desired.

After the client has sent all the files it is configured to send, it will pass control to the server. At that time the on_ready_to_send event will fire, and the oftp_connection_ready_to_send property will be set to true. After this, you can either end the session with the client by calling logoff or send files to the client. To send files to the client simply call the send_file method with the specified parameters.

TLS/SSL Notes

When use_ssl is set to true, the server must be configured with a TLS/SSL certificate before it is started. Set ssl_cert to a valid certificate with corresponding private key before setting listening to true. This may be a PFX file, PEM key, or a certificate in a windows certificate store. See the ssl_cert property for more information.

After ssl_cert is set to a valid certificate and listening is set to true, when a client connects the on_ssl_status event will fire during the TLS/SSL negotiation. This is purely informational, if there is an error the on_error event will fire.

If you want to require TLS/SSL client authentication, set ssl_authenticate_clients to true before setting listening to true. This will force clients to present a certificate during TLS/SSL negotiation to be used for authorization. In this case the on_ssl_client_authentication event will fire and you must set the Accept parameter within the event to true in order to accept the client's certificate and proceed with the connection.

Example Code

MyOftpserver server; server.SetServerSSIDCode("SERVERSSID"); server.SetServerSFIDCode("SERVERSFID"); server.SetServerPassword("SERVER"); server.SetListening(true); ... //Within the main loop of the application call server.DoEvents() in a loop //to process events. //When the ReadyToSend event fires the server can then send files to the client. To do this call the SendFile method. //Alternatively, monitor server.GetOFTPConnectionReadyToSend(<ConnectionId>) to determine when files can be sent. class MyOFTPServer : public OFTPServer { public: MyOFTPServer() {} virtual int FireAcceptConnection(OFTPServerAcceptConnectionEventParams* e) { clientConnectionId = e->ConnectionId; clientSSIDCode = strdup(e->ClientSSIDCode); this->SetOFTPConnectionDownloadDirectory(e->ConnectionId, INCOMING_DIR); return 0; } virtual int FireAcceptFile(OFTPServerAcceptFileEventParams* e) { //e->Accept = False; //To reject a file set e->Accept to false return 0; } virtual int FirePITrail(OFTPServerPITrailEventParams* e) { char logmsg[MAX_PATH]; if (e->Direction == 0) { sprintf(logmsg, "CLIENT: %s : %s", e->CommandId, e->CommandDescription); } else { sprintf(logmsg, "SERVER: %s : %s", e->CommandId, e->CommandDescription); } printf(logmsg); return 0; } virtual int FireError(OFTPServerErrorEventParams* e) { printf("[%d] %s\n", e->ErrorCode,strdup(e->Description)); return 0; } };

Property List

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


cert_encoded	This is the certificate (PEM/base64 encoded).
cert_store	This is the name of the certificate store for the client certificate.
cert_store_password	If the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.
cert_store_type	This is the type of certificate store for this certificate.
cert_subject	This is the subject of the certificate used for client authentication.
connection_backlog	This property includes the maximum number of pending connections maintained by the Transmission Control Protocol (TCP)/IP subsystem.
oftp_connection_count	The number of records in the OFTPConnection arrays.
oftp_connection_compress	Whether or not compression is used on the outgoing or incoming file.
oftp_connection_connected	This property is used to disconnect individual connections or to show their status.
oftp_connection_connection_id	This property contains an identifier generated by the class to identify each connection.
oftp_connection_download_directory	The directory to which files will be saved.
oftp_connection_encryption_algorithm	The encryption algorithm used when sending files to the client.
oftp_connection_local_address	This property shows the IP address of the interface through which the connection is passing.
oftp_connection_max_record_size	This value determines the maximum length for a record in the outgoing virtual file.
oftp_connection_ready_to_send	Specifies whether or not the server can send to the client.
oftp_connection_recipient_cert_store	The name of the certificate store for the recipient certificate.
oftp_connection_recipient_cert_store_password	If the certificate store is of a type that requires a password, this property is used to specify that password in order to open the certificate store.
oftp_connection_recipient_cert_store_type	The type of certificate store for this certificate.
oftp_connection_recipient_cert_subject	The subject of the recipient certificate.
oftp_connection_remote_host	This property shows the IP address of the remote host through which the connection is coming.
oftp_connection_remote_port	This property shows the Transmission Control Protocol (TCP) port on the remote host through which the connection is coming.
oftp_connection_sfid_code	The connected client's SFID code.
oftp_connection_signed_receipt	Indicates whether a signed receipt is requested.
oftp_connection_ssid_code	The connected client's SSID code.
oftp_connection_timeout	A timeout for the class.
oftp_connection_version	This holds the version of OFTP supported by the client.
oftp_connection_virtual_file_date	Set this to the date/time stamp for the virtual file before sending.
oftp_connection_virtual_file_format	The structure of the outgoing or incoming file.
oftp_connection_virtual_file_security_level	Specifies security options for the outgoing or incoming file.
default_timeout	An initial timeout value to be used by incoming connections.
listening	If set to True, the class accepts incoming connections on LocalPort.
local_host	The name of the local host or user-assigned IP interface through which connections are initiated or accepted.
local_port	The TCP port in the local host where the class listens.
server_password	The server's password.
server_sfid_code	Server's SFID code.
server_ssid_code	The server's SSID code.
ssl_authenticate_clients	If set to True, the server asks the client(s) for a certificate.
ssl_cert_encoded	This is the certificate (PEM/base64 encoded).
ssl_cert_store	This is the name of the certificate store for the client certificate.
ssl_cert_store_password	If the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.
ssl_cert_store_type	This is the type of certificate store for this certificate.
ssl_cert_subject	This is the subject of the certificate used for client authentication.
trusted_cert_count	The number of records in the TrustedCert arrays.
trusted_cert_encoded	This is the certificate (PEM/base64 encoded).
trusted_cert_store	This is the name of the certificate store for the client certificate.
trusted_cert_store_password	If the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.
trusted_cert_store_type	This is the type of certificate store for this certificate.
trusted_cert_subject	This is the subject of the certificate used for client authentication.
use_ssl	Use SSL to access the RemoteHost .

Method List

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


change_direction	Sends a Change Direction (CD) command.
config	Sets or retrieves a configuration setting.
disconnect	This method disconnects the specified client.
do_events	Processes events from the internal message queue.
exchange_certificate	Exchange a certificate with the remote host.
import_trusted_certs	Imports a list of trusted CA certificates.
interrupt	This method interrupts a synchronous send to the remote host.
logoff	Ends a session with the connection client.
reset	Resets the state of the control.
send_end_response	Sends an EERP/NERP asynchronously.
send_file	Sends a file to the specified client.
shutdown	This method shuts down the server.
start_listening	This method starts listening for incoming connections.
stop_listening	This method stops listening for new connections.
validate_cert	Validates the certificate with private key.
validate_recipient_cert	Validates the recipient certificate.

Event List

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


on_accept_connection	Fired when a client connects.
on_accept_file	Fired when the client sends a file.
on_certificate_received	Fired when a certificate is received from the remote host.
on_connected	This event is fired immediately after a connection completes (or fails).
on_connection_request	This event is fired when a request for connection comes from a remote host.
on_disconnected	This event is fired when a connection is closed.
on_end_response	Fired every time an end response is received from the client.
on_end_transfer	Fired when a file finishes transferring.
on_error	Information about errors during data delivery.
on_log	Fires once for each log message.
on_pi_trail	Fired when any protocol level communication occurs.
on_ready_to_send	Fired when the class is ready to send data.
on_ssl_client_authentication	This event is fired when the client presents its credentials to the server.
on_ssl_connection_request	This event fires when a Secure Sockets Layer (SSL) connection is requested.
on_ssl_status	This event is fired to show the progress of the secure connection.
on_start_transfer	Fired when a document starts transferring.
on_transfer	Fired while a document transfers (delivers document).

Config Settings

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


AllowRetry[ConnectionId]	Whether to send a retry indicator when rejecting a file.
CDAfterSendEndResponse[ConnectionId]	Whether to issue a CD command after sending an asynchronous EERP.
CertificateStore[ConnectionId]	The name of the certificate store.
CertificateStorePassword[ConnectionId]	The certificate password.
CertificateStoreType[ConnectionId]	The type of certificate store.
CertificateSubject[ConnectionId]	The certificate subject.
CertificateType	Specifies the type of certificate being supplied.
CertificateType[ConnectionId]	Specifies the type of certificate being supplied.
ConnectionType[ConnectionId]	Specifies the type of connection that will be created.
CreditCount[ConnectionId]	Specifies the maximum credit value.
DefaultIdleTimeout	The default idle timeout for inactive clients.
DefaultReceiptHashAlgorithm	The receipt hash algorithm to request when sending a file.
DeleteOnError	Whether received files are deleted when there is an error during processing.
DisconnectAfterEndSession	Determines if the connection is closed immediately after ending the session.
ExchangeBufferSize[ConnectionId]	Specifies the data exchange buffer size in bytes.
ExchangeCertStoreType	Specifies the store type when loading a certificate to be exchanged.
ExchangeCertSubject	The subject of the certificate being exchanged.
FailOnUntrustedCert	Whether or not to throw an exception when untrusted certificates are used.
FileDescription[ConnectionId]	Additional description information sent with the file.
FileHashAlgorithm[ConnectionId]	The hash algorithm to use when sending a file.
FireEndResponseOnSend	Determines if the EndResponse event is fired for outgoing EERP and NERPs.
FollowRedirects	Determines behavior when importing trusted certificates and a HTTP redirect is returned.
FriendlyLogFormat	Determines if a more friendly format is applied to PITrail event out.
IdleTimeout	The idle timeout for this connection.
KeepAlive	This property enables the SO_KEEPALIVE option on the incoming connections. This option prevents long connections from timing out in case of inactivity.
Linger	This property controls how a connection is closed. The default is True. In this case the connection is closed only after all the data is sent. Setting it to False forces an abrupt (hard) disconnection. Any data that was in the sending queue may be lost.
LogLevel	The level of information to log.
ReceivedConnectionType[ConnectionId]	Returns the connection type specified by the client.
ReceivedFileDateTime[ConnectionId]	The datetime of the file being received.
ReceivedFileDescription[ConnectionId]	Additional description information received with the file.
ReceivedFileEncryptionAlg[ConnectionId]	The encryption algorithm used for the file being received.
ReceivedFileName[ConnectionId]	Returns the name of the received file.
ReceivedFileNameFormat	The name format of received files.
ReceivedFileNameFormat[ConnectionId]	The name format of received files.
RecipientCertificateType	Specifies the type of recipient certificate being supplied.
Retry[ConnectionId]	Indicates whether the recipient allows the send to be retried.
SecureAuthentication	Specifies secure authentication requirements for connecting clients.
SendCDAfterEFPA	Specifies whether a CD is always sent after receiving an EFPA.
ServerPassword[ConnectionId]	Sets or gets the ServerPassword for a particular connection.
ServerSFIDCode[ConnectionId]	Sets or gets the ServerSFIDCode for a particular connection.
ServerSSIDCode[ConnectionId]	Sets the ServerSSIDCode for a particular connection.
TempPath[ConnectionId]	The path of a directory where temporary files will be created.
TrustedCertsData	Specifies the source to be used when importing trusted certificates.
VirtualFileDateFormat	The DateTime format of received files.
AllowedClients	A comma-separated list of host names or IP addresses that can access the class.
BindExclusively	Whether or not the class considers a local port reserved for exclusive use.
BlockedClients	A comma-separated list of host names or IP addresses that cannot access the class.
ConnectionUID	The unique connectionId for a connection.
DefaultConnectionTimeout	The inactivity timeout applied to the SSL handshake.
InBufferSize	The size in bytes of the incoming queue of the socket.
KeepAliveInterval	The retry interval, in milliseconds, to be used when a TCP keep-alive packet is sent and no response is received.
KeepAliveRetryCount	The number of keep-alive packets to be sent before the remotehost is considered disconnected.
KeepAliveTime	The inactivity time in milliseconds before a TCP keep-alive packet is sent.
MaxConnections	The maximum number of connections available.
MaxReadTime	The maximum time spent reading data from each connection.
OutBufferSize	The size in bytes of the outgoing queue of the socket.
TcpNoDelay	Whether or not to delay when sending packets.
UseIOCP	Whether to use the completion port I/O model.
UseIPv6	Whether to use IPv6.
UseWindowsMessages	Whether to use the WSAAsyncSelect I/O model.
LogSSLPackets	Controls whether SSL packets are logged when using the internal security API.
OpenSSLCADir	The path to a directory containing CA certificates.
OpenSSLCAFile	Name of the file containing the list of CA's trusted by your application.
OpenSSLCipherList	A string that controls the ciphers to be used by SSL.
OpenSSLPrngSeedData	The data to seed the pseudo random number generator (PRNG).
ReuseSSLSession	Determines if the SSL session is reused.
SSLCACertFilePaths	The paths to CA certificate files on Unix/Linux.
SSLCACerts	A newline separated list of CA certificate to use during SSL client authentication.
SSLCheckCRL	Whether to check the Certificate Revocation List for the server certificate.
SSLCheckOCSP	Whether to use OCSP to check the status of the server certificate.
SSLCipherStrength	The minimum cipher strength used for bulk encryption.
SSLEnabledCipherSuites	The cipher suite to be used in an SSL negotiation.
SSLEnabledProtocols	Used to enable/disable the supported security protocols.
SSLEnableRenegotiation	Whether the renegotiation_info SSL extension is supported.
SSLIncludeCertChain	Whether the entire certificate chain is included in the SSLServerAuthentication event.
SSLKeyLogFile	The location of a file where per-session secrets are written for debugging purposes.
SSLNegotiatedCipher	Returns the negotiated ciphersuite.
SSLNegotiatedCipherStrength	Returns the negotiated ciphersuite strength.
SSLNegotiatedCipherSuite	Returns the negotiated ciphersuite.
SSLNegotiatedKeyExchange	Returns the negotiated key exchange algorithm.
SSLNegotiatedKeyExchangeStrength	Returns the negotiated key exchange algorithm strength.
SSLNegotiatedVersion	Returns the negotiated protocol version.
SSLSecurityFlags	Flags that control certificate verification.
SSLServerCACerts	A newline separated list of CA certificate to use during SSL server certificate validation.
TLS12SignatureAlgorithms	Defines the allowed TLS 1.2 signature algorithms when SSLProvider is set to Internal.
TLS12SupportedGroups	The supported groups for ECC.
TLS13KeyShareGroups	The groups for which to pregenerate key shares.
TLS13SignatureAlgorithms	The allowed certificate signature algorithms.
TLS13SupportedGroups	The supported groups for (EC)DHE key exchange.
BuildInfo	Information about the product's build.
CodePage	The system code page used for Unicode to Multibyte translations.
LicenseInfo	Information about the current license.
MaskSensitive	Whether sensitive data is masked in log messages.
ProcessIdleEvents	Whether the class uses its internal event loop to process events when the main thread is idle.
SelectWaitMillis	The length of time in milliseconds the class will wait when DoEvents is called if there are no events to process.
UseFIPSCompliantAPI	Tells the class whether or not to use FIPS certified APIs.
UseInternalSecurityAPI	Tells the class whether or not to use the system security libraries or an internal implementation.

cert_encoded Property

This is the certificate (PEM/base64 encoded).

Syntax

def get_cert_encoded() -> bytes: ...
def set_cert_encoded(value: bytes) -> None: ...

cert_encoded = property(get_cert_encoded, set_cert_encoded)

Default Value

Remarks

This is the certificate (PEM/base64 encoded). This property is used to assign a specific certificate. The cert_store and cert_subject properties also may be used to specify a certificate.

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

cert_store Property

This is the name of the certificate store for the client certificate.

Syntax

def get_cert_store() -> bytes: ...
def set_cert_store(value: bytes) -> None: ...

cert_store = property(get_cert_store, set_cert_store)

Default Value

"MY"

Remarks

This is the name of the certificate store for the client certificate.

The cert_store_type property denotes the type of the certificate store specified by cert_store. If the store is password protected, specify the password in cert_store_password.

cert_store is used in conjunction with the cert_subject property to specify client certificates. If cert_store has a value, and cert_subject or cert_encoded is set, a search for a certificate is initiated. Please see the cert_subject property for details.

Designations of certificate stores are platform-dependent.

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


MY	A certificate store holding personal certificates with their associated private keys.
CA	Certifying authority certificates.
ROOT	Root certificates.

When the certificate store type is PFXFile, this property must be set to the name of the file. When the type is PFXBlob, the property must be set to the binary contents of a PFX file (i.e. PKCS12 certificate store).

cert_store_password Property

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

Syntax

def get_cert_store_password() -> str: ...
def set_cert_store_password(value: str) -> None: ...

cert_store_password = property(get_cert_store_password, set_cert_store_password)

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.

cert_store_type Property

This is the type of certificate store for this certificate.

Syntax

def get_cert_store_type() -> int: ...
def set_cert_store_type(value: int) -> None: ...

cert_store_type = property(get_cert_store_type, set_cert_store_type)

Default Value

Remarks

This is the type of certificate store for this certificate.

The class supports both public and private keys in a variety of formats. When the cstAuto value is used the class will automatically determine the type. This 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 (PKCS12) file containing certificates.
3 (cstPFXBlob)	The certificate store is a string (binary or base64-encoded) representing a certificate store in PFX (PKCS12) 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 PKCS7 file containing certificates.
12 (cstP7BBlob)	The certificate store is a string (binary) representing a certificate store in PKCS7 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 PKCS11 interface. To use a security key the necessary data must first be collected using the CertMgr class. The list_store_certificates method may be called after setting cert_store_type to `cstPKCS11`, cert_store_password to the PIN, and cert_store to the full path of the PKCS11 dll. The certificate information returned in the on_cert_list event's `CertEncoded` parameter may be saved for later use. When using a certificate, pass the previously saved security key information as the cert_store and set cert_store_password 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.

cert_subject Property

This is the subject of the certificate used for client authentication.

Syntax

def get_cert_subject() -> str: ...
def set_cert_subject(value: str) -> None: ...

cert_subject = property(get_cert_subject, set_cert_subject)

Default Value

Remarks

This is the subject of the certificate used for client authentication.

This property must be set after all other certificate properites are set. When this property is set, a search is performed in the current certificate store certificate with 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 displayed below.


Field	Meaning
CN	Common Name. This is commonly a host name like www.server.com.
O	Organization
OU	Organizational Unit
L	Locality
S	State
C	Country
E	Email Address

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

connection_backlog Property

This property includes the maximum number of pending connections maintained by the Transmission Control Protocol (TCP)/IP subsystem.

Syntax

def get_connection_backlog() -> int: ...
def set_connection_backlog(value: int) -> None: ...

connection_backlog = property(get_connection_backlog, set_connection_backlog)

Default Value

Remarks

This property contains the maximum number of pending connections maintained by the TCP/IP subsystem. This value reflects the SOMAXCONN option for the main listening socket. The default value for most systems is 5. You may set this property to a larger value if the server is expected to receive a large number of connections, and queuing them is desirable.

oftp_connection_count Property

The number of records in the OFTPConnection arrays.

Syntax

def get_oftp_connection_count() -> int: ...

oftp_connection_count = property(get_oftp_connection_count, None)

Default Value

Remarks

This property controls the size of the following arrays:

oftp_connection_compress
oftp_connection_connected
oftp_connection_connection_id
oftp_connection_download_directory
oftp_connection_encryption_algorithm
oftp_connection_local_address
oftp_connection_max_record_size
oftp_connection_ready_to_send
oftp_connection_recipient_cert_store
oftp_connection_recipient_cert_store_password
oftp_connection_recipient_cert_store_type
oftp_connection_recipient_cert_subject
oftp_connection_remote_host
oftp_connection_remote_port
oftp_connection_sfid_code
oftp_connection_signed_receipt
oftp_connection_ssid_code
oftp_connection_timeout
oftp_connection_version
oftp_connection_virtual_file_date
oftp_connection_virtual_file_format
oftp_connection_virtual_file_security_level

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

This property is read-only.

oftp_connection_compress Property

Whether or not compression is used on the outgoing or incoming file.

Syntax

def get_oftp_connection_compress(connection_id: int) -> bool: ...
def set_oftp_connection_compress(connection_id: int, value: bool) -> None: ...

Default Value

FALSE

Remarks

Whether or not compression is used on the outgoing or incoming file.

When sending files to the client, if Compress is true the file will be compressed.

When receiving files, query this property to determine whether the file received from the client was compressed or not.

Note that this is only applicable when Version 2.0 of the protocol is used as indicated by oftp_connection_version.

The connection_id parameter specifies the index of the item in the array. The size of the array is controlled by the oftp_connection_count property.

oftp_connection_connected Property

This property is used to disconnect individual connections or to show their status.

Syntax

def get_oftp_connection_connected(connection_id: int) -> bool: ...
def set_oftp_connection_connected(connection_id: int, value: bool) -> None: ...

Default Value

FALSE

Remarks

This property is used to disconnect individual connections or to show their status.

The oftp_connection_connected property may be set to False to close the connection.

oftp_connection_connected also shows the status of a particular connection (connected/disconnected).

How and when the connection is closed is controlled by the linger property. Please refer to its description for more information.

Note: It is recommended to use the connect or disconnect method instead of setting this property.

The connection_id parameter specifies the index of the item in the array. The size of the array is controlled by the oftp_connection_count property.

oftp_connection_connection_id Property

This property contains an identifier generated by the class to identify each connection.

Syntax

def get_oftp_connection_connection_id(connection_id: int) -> str: ...

Default Value

Remarks

This property contains an identifier generated by the class to identify each connection. This identifier is unique to this connection.

The connection_id parameter specifies the index of the item in the array. The size of the array is controlled by the oftp_connection_count property.

This property is read-only.

oftp_connection_download_directory Property

The directory to which files will be saved.

Syntax

def get_oftp_connection_download_directory(connection_id: int) -> str: ...
def set_oftp_connection_download_directory(connection_id: int, value: str) -> None: ...

Default Value

Remarks

The directory to which files will be saved.

This specifies the directory where files received by the server will be saved. This must be set before the client begins sending files. Set this in the on_connected, on_accept_connection, or on_connection_request events, for instance: oftpserver1.SetOFTPConnectionDownloadDirectory(123456789, "C:\\Downloads");

The connection_id parameter specifies the index of the item in the array. The size of the array is controlled by the oftp_connection_count property.

oftp_connection_encryption_algorithm Property

The encryption algorithm used when sending files to the client.

Syntax

def get_oftp_connection_encryption_algorithm(connection_id: int) -> int: ...
def set_oftp_connection_encryption_algorithm(connection_id: int, value: int) -> None: ...

Default Value

Remarks

The encryption algorithm used when sending files to the client.

In order to use encryption, you must set the oftp_connection_virtual_file_security_level property. The supported algorithms for encryption are:


0 (encra3DES - default)	DES (Triple Data Encryption Standard).
1 (encraAES)	AES (Advanced Encryption Standard with key length of 128).

Note that this is only applicable when Version 2.0 of the protocol is used as indicated by oftp_connection_version.

The connection_id parameter specifies the index of the item in the array. The size of the array is controlled by the oftp_connection_count property.

oftp_connection_local_address Property

This property shows the IP address of the interface through which the connection is passing.

Syntax

def get_oftp_connection_local_address(connection_id: int) -> str: ...

Default Value

Remarks

This property shows the IP address of the interface through which the connection is passing.

oftp_connection_local_address is important for multihomed hosts so that it can be used to find the particular network interface through which an individual connection is going.

The connection_id parameter specifies the index of the item in the array. The size of the array is controlled by the oftp_connection_count property.

This property is read-only.

oftp_connection_max_record_size Property

This value determines the maximum length for a record in the outgoing virtual file.

Syntax

def get_oftp_connection_max_record_size(connection_id: int) -> int: ...
def set_oftp_connection_max_record_size(connection_id: int, value: int) -> None: ...

Default Value

Remarks

This value determines the maximum length for a record in the outgoing virtual file. When oftp_connection_virtual_file_format has been set to ffUnstructured or ffText, this value must be zero. When ffFixed or ffVariable, this must be set to a value greater than 0, containing the maximum line length of the outgoing file.

The connection_id parameter specifies the index of the item in the array. The size of the array is controlled by the oftp_connection_count property.

oftp_connection_ready_to_send Property

Specifies whether or not the server can send to the client.

Syntax

def get_oftp_connection_ready_to_send(connection_id: int) -> bool: ...

Default Value

FALSE

Remarks

Specifies whether or not the server can send to the client.

When the client passes control to the server, this property will be true. Additionally the on_ready_to_send event will fire at this time. This must be true before sending files to the client.

The connection_id parameter specifies the index of the item in the array. The size of the array is controlled by the oftp_connection_count property.

This property is read-only.

oftp_connection_recipient_cert_store Property

The name of the certificate store for the recipient certificate.

Syntax

def get_oftp_connection_recipient_cert_store(connection_id: int) -> bytes: ...
def set_oftp_connection_recipient_cert_store(connection_id: int, value: bytes) -> None: ...

Default Value

"MY"

Remarks

The name of the certificate store for the recipient certificate.

The oftp_connection_recipient_cert_store_type property specifies the type of the certificate store specified by oftp_connection_recipient_cert_store. If the store is password protected, specify the password in oftp_connection_recipient_cert_store_password.

oftp_connection_recipient_cert_store is used in conjunction with the oftp_connection_recipient_cert_subject property in order to specify client certificates. If oftp_connection_recipient_cert_store has a value, and oftp_connection_recipient_cert_subject is set, a search for a certificate is initiated. Please refer to the oftp_connection_recipient_cert_subject property for details.

Designations of certificate stores are platform-dependent.

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


MY	A certificate store holding personal certificates with their associated private keys.
CA	Certifying authority certificates.
ROOT	Root certificates.

Note that this is only applicable when Version 2.0 of the protocol is used as indicated by oftp_connection_version.

The connection_id parameter specifies the index of the item in the array. The size of the array is controlled by the oftp_connection_count property.

oftp_connection_recipient_cert_store_password Property

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

Syntax

def get_oftp_connection_recipient_cert_store_password(connection_id: int) -> str: ...
def set_oftp_connection_recipient_cert_store_password(connection_id: int, value: str) -> None: ...

Default Value

Remarks

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

Note that this is only applicable when Version 2.0 of the protocol is used as indicated by oftp_connection_version.

The connection_id parameter specifies the index of the item in the array. The size of the array is controlled by the oftp_connection_count property.

oftp_connection_recipient_cert_store_type Property

The type of certificate store for this certificate.

Syntax

def get_oftp_connection_recipient_cert_store_type(connection_id: int) -> int: ...
def set_oftp_connection_recipient_cert_store_type(connection_id: int, value: int) -> None: ...

Default Value

Remarks

The type of certificate store for this certificate.


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 (PKCS12) file containing certificates.
3 (cstPFXBlob)	The certificate store is a string (binary or base64-encoded) representing a certificate store in PFX (PKCS12) 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 PKCS7 file containing certificates.
12 (cstP7BBlob)	The certificate store is a string (binary) representing a certificate store in PKCS7 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 PKCS11 interface. To use a security key the necessary data must first be collected using the CertMgr class. The list_store_certificates method may be called after setting cert_store_type to `cstPKCS11`, cert_store_password to the PIN, and cert_store to the full path of the PKCS11 dll. The certificate information returned in the on_cert_list event's `CertEncoded` parameter may be saved for later use. When using a certificate, pass the previously saved security key information as the oftp_connection_store and set oftp_connection_store_password 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.

Note that this is only applicable when Version 2.0 of the protocol is used as indicated by oftp_connection_version.

The connection_id parameter specifies the index of the item in the array. The size of the array is controlled by the oftp_connection_count property.

oftp_connection_recipient_cert_subject Property

The subject of the recipient certificate.

Syntax

def get_oftp_connection_recipient_cert_subject(connection_id: int) -> str: ...
def set_oftp_connection_recipient_cert_subject(connection_id: int, value: str) -> None: ...

Default Value

Remarks

The subject of the recipient certificate.

This property must be set after all other certificate properites are set. When this property is set, a search is performed in the current certificate store certificate with 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.


Field	Meaning
CN	Common Name. This is commonly a host name like www.server.com.
O	Organization
OU	Organizational Unit
L	Locality
S	State
C	Country
E	Email Address

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

Note that this is only applicable when Version 2.0 of the protocol is used as indicated by oftp_connection_version.

The connection_id parameter specifies the index of the item in the array. The size of the array is controlled by the oftp_connection_count property.

oftp_connection_remote_host Property

This property shows the IP address of the remote host through which the connection is coming.

Syntax

def get_oftp_connection_remote_host(connection_id: int) -> str: ...

Default Value

Remarks

This property shows the IP address of the remote host through which the connection is coming.

The connection must be valid or an error will be fired.

If the class 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.

The connection_id parameter specifies the index of the item in the array. The size of the array is controlled by the oftp_connection_count property.

This property is read-only.

oftp_connection_remote_port Property

This property shows the Transmission Control Protocol (TCP) port on the remote host through which the connection is coming.

Syntax

def get_oftp_connection_remote_port(connection_id: int) -> int: ...

Default Value

Remarks

This property shows the Transmission Control Protocol (TCP) port on the remote host through which the connection is coming.

The connection must be valid or an error will be fired.

The connection_id parameter specifies the index of the item in the array. The size of the array is controlled by the oftp_connection_count property.

This property is read-only.

oftp_connection_sfid_code Property

The connected client's SFID code.

Syntax

def get_oftp_connection_sfid_code(connection_id: int) -> str: ...
def set_oftp_connection_sfid_code(connection_id: int, value: str) -> None: ...

Default Value

Remarks

The connected client's SFID code.

The SFID code identifies the origin or destination party that is sending or receiving a file, while the SSID code identifies the party that a session is established with. If the SFID and SSID codes do not match, then the party the session is established with is acting as an intermediary, and the party identified by the SFID code is either the origin or final destination.

When acting as an intermediary the component will not perform any security services (i.e. sign, verify, encrypt, decrypt). Security services are to be performed by the origin or destination only. Data should simply be passed along by an intermediary.

The connection_id parameter specifies the index of the item in the array. The size of the array is controlled by the oftp_connection_count property.

oftp_connection_signed_receipt Property

Indicates whether a signed receipt is requested.

Syntax

def get_oftp_connection_signed_receipt(connection_id: int) -> bool: ...
def set_oftp_connection_signed_receipt(connection_id: int, value: bool) -> None: ...

Default Value

FALSE

Remarks

Indicates whether a signed receipt is requested.

When sending files, if this is set to true a signed receipt will be requested. In that case oftp_connection_recipient_cert_store_type, oftp_connection_recipient_cert_store, and oftp_connection_recipient_cert_subject must be set to specify the public certificate that will be used to verify the signature on the receipt returned by the client after send_file is called. The class will automatically verify the signature on the returned receipt.

When receiving files, query this property to determine if the client requested a signed receipt. If true, the certificate property must be set to a certificate with private key in order to sign the receipt that will be returned to the client. The class will sign and deliver the receipt automatically.

Note that this is only applicable when Version 2.0 of the protocol is used as indicated by oftp_connection_version.

The connection_id parameter specifies the index of the item in the array. The size of the array is controlled by the oftp_connection_count property.

oftp_connection_ssid_code Property

The connected client's SSID code.

Syntax

def get_oftp_connection_ssid_code(connection_id: int) -> str: ...
def set_oftp_connection_ssid_code(connection_id: int, value: str) -> None: ...

Default Value

Remarks

The connected client's SSID code.

The connection_id parameter specifies the index of the item in the array. The size of the array is controlled by the oftp_connection_count property.

oftp_connection_timeout Property

A timeout for the class.

Syntax

def get_oftp_connection_timeout(connection_id: int) -> int: ...
def set_oftp_connection_timeout(connection_id: int, value: int) -> None: ...

Default Value

Remarks

A timeout for the class.

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

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

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

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

Please note that by default, all timeouts are inactivity timeouts, i.e. the timeout period is extended by timeout seconds when any amount of data is successfully sent or received.

The default value for oftp_connection_timeout is specified by the default_timeout property.

The connection_id parameter specifies the index of the item in the array. The size of the array is controlled by the oftp_connection_count property.

oftp_connection_version Property

This holds the version of OFTP supported by the client.

Syntax

def get_oftp_connection_version(connection_id: int) -> int: ...

Default Value

Remarks

This holds the version of OFTP supported by the client. This value cannot be changed. All communication with the client is performed using the version returned by this property. Possible values are:


0 (oftpVer12)	OFTP Version 1.2
1 (oftpVer13)	OFTP Version 1.3
2 (oftpVer14)	OFTP Version 1.4
3 (oftpVer20)	OFTP Version 2.0

The connection_id parameter specifies the index of the item in the array. The size of the array is controlled by the oftp_connection_count property.

This property is read-only.

oftp_connection_virtual_file_date Property

Set this to the date/time stamp for the virtual file before sending.

Syntax

def get_oftp_connection_virtual_file_date(connection_id: int) -> str: ...
def set_oftp_connection_virtual_file_date(connection_id: int, value: str) -> None: ...

Default Value

Remarks

Set this to the date/time stamp for the virtual file before sending. If this is not set when sending a file, the current date/time will be used. This property will accept various date formats, but will return the following format only: "MM/dd/yyyy HH:mm:ss".

Supported date formats:

ddd, d MMM yy HH:mm:ss zzz
ddd, d MMM yyyy HH:mm:ss zzz
d MMM yy HH:mm:ss zzz
d MMM yyyy HH:mm:ss zzz
dd-MMM-yyyy HH:mm:ss
ddd, d MMM yy HH:mm:ss zz
ddd, d MMM yyyy HH:mm:ss zz
ddd, d MMM yy HH:mm:ss zzz
ddd, d MMM yyyy HH:mm:ss zzz
ddd, d MMM yy HH:mm:ss z
ddd, d MMM yyyy HH:mm:ss z
ddd, dd MMM yyyy HH:mm:ss 'GMT'
dddd, MMMM dd, yyyy h:mm:ss tt
dddd, MMMM dd yyyy h:mm tt
yyMMddHHmmssZ
yyyyMMddHHmmssZ
yyMMddHHmmsszzzz
yyyyMMddHHmmsszzzz
yyyyMMddHHmmssffff
MM/dd/yyyy HH:mm:ss

The connection_id parameter specifies the index of the item in the array. The size of the array is controlled by the oftp_connection_count property.

oftp_connection_virtual_file_format Property

The structure of the outgoing or incoming file.

Syntax

def get_oftp_connection_virtual_file_format(connection_id: int) -> int: ...
def set_oftp_connection_virtual_file_format(connection_id: int, value: int) -> None: ...

Default Value

Remarks

The structure of the outgoing or incoming file.

When sending files, set this property to specify the format to apply to outgoing files.

When receiving files, query this property to determine the structure of the file received from the client.

The following values are valid file formats for outgoing virtual files:


0 (Unstructured - default)	The outgoing file is binary and has not structure. There are no records in this type of file.
1 (Text)	The outgoing file is a text file that consists of lines containing no more than 2048 characters terminated by CRLF. This type contains no records.
2 (Fixed)	The outgoing file is in fixed file format, which means all records are of the same length. For fixed files, the class expects the file to be in text format with each line containing the max_record_size characters terminated by a CRLF.
3 (Variable)	The outgoing file is a variable file format, meaning all records are of variable length and are no longer than max_record_size. When using this format, the class will parse out each record as a line terminated by CRLF. Thus, this type of file must be a text file, and must contain lines with less than max_record_size characters.

Note: When either oftp_connection_virtual_file_security_level has been set to a value other than slNone or oftp_connection_compress has been set to true, all files become ffUnstructured except ffVariable files.

The connection_id parameter specifies the index of the item in the array. The size of the array is controlled by the oftp_connection_count property.

oftp_connection_virtual_file_security_level Property

Specifies security options for the outgoing or incoming file.

Syntax

def get_oftp_connection_virtual_file_security_level(connection_id: int) -> int: ...
def set_oftp_connection_virtual_file_security_level(connection_id: int, value: int) -> None: ...

Default Value

Remarks

Specifies security options for the outgoing or incoming file.

When receiving files, query this property to determine the security level of the file received from the client.

When sending files to the client, this property will be used to determine what security options apply to the outgoing file. Possible values are:


0 (slNone - default)	The file will not be signed nor encrypted.
1 (slEncrypted)	The file will be encrypted using the certificate specified by the oftp_connection_recipient_cert_subject. property
2 (slSigned)	The file will be signed using the certificate specified by the certificate property;
3 (slEncryptedAndSigned)	The file will be both signed and encrypted.

Note that this is only applicable when Version 2.0 of the protocol is used as indicated by oftp_connection_version.

The connection_id parameter specifies the index of the item in the array. The size of the array is controlled by the oftp_connection_count property.

default_timeout Property

An initial timeout value to be used by incoming connections.

Syntax

def get_default_timeout() -> int: ...
def set_default_timeout(value: int) -> None: ...

default_timeout = property(get_default_timeout, set_default_timeout)

Default Value

Remarks

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

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

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

Please note that by default, all timeouts are inactivity timeouts, i.e. the timeout period is extended by timeout seconds when any amount of data is successfully sent or received.

The default value for the default_timeout property is 60 (seconds).

listening Property

If set to True, the class accepts incoming connections on LocalPort.

Syntax

def get_listening() -> bool: ...
def set_listening(value: bool) -> None: ...

listening = property(get_listening, set_listening)

Default Value

FALSE

Remarks

This property indicates whether the class is listening for connections on the port specified by the local_port property.

Note: Use the start_listening and stop_listening methods to control whether the class is listening.

local_host Property

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

Syntax

def get_local_host() -> str: ...
def set_local_host(value: str) -> None: ...

local_host = property(get_local_host, set_local_host)

Default Value

Remarks

The local_host 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 multi-homed hosts (machines with more than one IP interface) setting LocalHost to the value of an interface will make the class initiate connections (or accept in the case of server classs) only through that interface.

If the class is connected, the local_host 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 multi-homed hosts (machines with more than one IP interface).

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

local_port Property

The TCP port in the local host where the class listens.

Syntax

def get_local_port() -> int: ...
def set_local_port(value: int) -> None: ...

local_port = property(get_local_port, set_local_port)

Default Value

3305

Remarks

This property must be set before OFTPServer starts listening. If its value is 0, then the TCP/IP subsystem picks a port number at random. The port number can be found by checking the value of this property after OFTPServer is in listening mode (after successfully assigning True to the listening property).

The service port is not shared among servers (i.e. there can be only one OFTPServer 'listening' on a particular port at one time).

The default value for plaintext communication is 3305. If use_ssl is set to true, set this value to 6619 (the default port for SSL communication).

server_password Property

The server's password.

Syntax

def get_server_password() -> str: ...
def set_server_password(value: str) -> None: ...

server_password = property(get_server_password, set_server_password)

Default Value

Remarks

The password assigned to the server in the bilateral agreement. This property must be a string of no more than 8 characters long.

server_sfid_code Property

Server's SFID code.

Syntax

def get_server_sfid_code() -> str: ...
def set_server_sfid_code(value: str) -> None: ...

server_sfid_code = property(get_server_sfid_code, set_server_sfid_code)

Default Value

Remarks

server_ssid_code Property

The server's SSID code.

Syntax

def get_server_ssid_code() -> str: ...
def set_server_ssid_code(value: str) -> None: ...

server_ssid_code = property(get_server_ssid_code, set_server_ssid_code)

Default Value

Remarks

The identification code of the server. This code may be less than, but no more than 25 characters long. Generally, SSID codes have the following format as specified in RFC 2204 that is based on ISO 6523:


Code Identifier	'O' - Indicates ODETTE assigned the Organization Identifier. Other values can be used for non-ODETTE codes. NOTE: This field is a fixed length of 1 character.
International Code	A code forming part of the Organization Identifier. NOTE: This field may be of variable length up to 4 characters long.
Organization Code	A code forming part of the Organization Identifier. This field may contain the letters A to Z, the digits 0 to 9, and space and hyphen characters. NOTE: This field may be of variable length up to 14 characters long.
Computer Sub-Address	A locally assigned address which uniquely identifies a system within an organization (defined by an Organization Identifier). NOTE: This field may be of variable length up to 6 characters long.

ssl_authenticate_clients Property

If set to True, the server asks the client(s) for a certificate.

Syntax

def get_ssl_authenticate_clients() -> bool: ...
def set_ssl_authenticate_clients(value: bool) -> None: ...

ssl_authenticate_clients = property(get_ssl_authenticate_clients, set_ssl_authenticate_clients)

Default Value

FALSE

Remarks

This property is used in conjunction with the on_ssl_client_authentication event. Please refer to the documentation of the on_ssl_client_authentication event for details.

ssl_cert_encoded Property

This is the certificate (PEM/base64 encoded).

Syntax

def get_ssl_cert_encoded() -> bytes: ...
def set_ssl_cert_encoded(value: bytes) -> None: ...

ssl_cert_encoded = property(get_ssl_cert_encoded, set_ssl_cert_encoded)

Default Value

Remarks

This is the certificate (PEM/base64 encoded). This property is used to assign a specific certificate. The ssl_cert_store and ssl_cert_subject properties also may be used to specify a certificate.

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

ssl_cert_store Property

This is the name of the certificate store for the client certificate.

Syntax

def get_ssl_cert_store() -> bytes: ...
def set_ssl_cert_store(value: bytes) -> None: ...

ssl_cert_store = property(get_ssl_cert_store, set_ssl_cert_store)

Default Value

"MY"

Remarks

This is the name of the certificate store for the client certificate.

The ssl_cert_store_type property denotes the type of the certificate store specified by ssl_cert_store. If the store is password protected, specify the password in ssl_cert_store_password.

ssl_cert_store is used in conjunction with the ssl_cert_subject property to specify client certificates. If ssl_cert_store has a value, and ssl_cert_subject or ssl_cert_encoded is set, a search for a certificate is initiated. Please see the ssl_cert_subject property for details.

Designations of certificate stores are platform-dependent.

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


MY	A certificate store holding personal certificates with their associated private keys.
CA	Certifying authority certificates.
ROOT	Root certificates.

ssl_cert_store_password Property

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

Syntax

def get_ssl_cert_store_password() -> str: ...
def set_ssl_cert_store_password(value: str) -> None: ...

ssl_cert_store_password = property(get_ssl_cert_store_password, set_ssl_cert_store_password)

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.

ssl_cert_store_type Property

This is the type of certificate store for this certificate.

Syntax

def get_ssl_cert_store_type() -> int: ...
def set_ssl_cert_store_type(value: int) -> None: ...

ssl_cert_store_type = property(get_ssl_cert_store_type, set_ssl_cert_store_type)

Default Value

Remarks

This is the type of certificate store for this certificate.


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 (PKCS12) file containing certificates.
3 (cstPFXBlob)	The certificate store is a string (binary or base64-encoded) representing a certificate store in PFX (PKCS12) 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 PKCS7 file containing certificates.
12 (cstP7BBlob)	The certificate store is a string (binary) representing a certificate store in PKCS7 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 PKCS11 interface. To use a security key the necessary data must first be collected using the CertMgr class. The list_store_certificates method may be called after setting cert_store_type to `cstPKCS11`, cert_store_password to the PIN, and cert_store to the full path of the PKCS11 dll. The certificate information returned in the on_cert_list event's `CertEncoded` parameter may be saved for later use. When using a certificate, pass the previously saved security key information as the ssl_cert_store and set ssl_cert_store_password 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.

ssl_cert_subject Property

This is the subject of the certificate used for client authentication.

Syntax

def get_ssl_cert_subject() -> str: ...
def set_ssl_cert_subject(value: str) -> None: ...

ssl_cert_subject = property(get_ssl_cert_subject, set_ssl_cert_subject)

Default Value

Remarks

This is the subject of the certificate used for client authentication.

This property must be set after all other certificate properites are set. When this property is set, a search is performed in the current certificate store certificate with 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.


Field	Meaning
CN	Common Name. This is commonly a host name like www.server.com.
O	Organization
OU	Organizational Unit
L	Locality
S	State
C	Country
E	Email Address

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

trusted_cert_count Property

The number of records in the TrustedCert arrays.

Syntax

def get_trusted_cert_count() -> int: ...
def set_trusted_cert_count(value: int) -> None: ...

trusted_cert_count = property(get_trusted_cert_count, set_trusted_cert_count)

Default Value

Remarks

This property controls the size of the following arrays:

trusted_cert_encoded
trusted_cert_store
trusted_cert_store_password
trusted_cert_store_type
trusted_cert_subject

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

trusted_cert_encoded Property

This is the certificate (PEM/base64 encoded).

Syntax

def get_trusted_cert_encoded(trusted_cert_index: int) -> bytes: ...
def set_trusted_cert_encoded(trusted_cert_index: int, value: bytes) -> None: ...

Default Value

Remarks

This is the certificate (PEM/base64 encoded). This property is used to assign a specific certificate. The trusted_cert_store and trusted_cert_subject properties also may be used to specify a certificate.

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

The trusted_cert_index parameter specifies the index of the item in the array. The size of the array is controlled by the trusted_cert_count property.

trusted_cert_store Property

This is the name of the certificate store for the client certificate.

Syntax

def get_trusted_cert_store(trusted_cert_index: int) -> bytes: ...
def set_trusted_cert_store(trusted_cert_index: int, value: bytes) -> None: ...

Default Value

"MY"

Remarks

This is the name of the certificate store for the client certificate.

The trusted_cert_store_type property denotes the type of the certificate store specified by trusted_cert_store. If the store is password protected, specify the password in trusted_cert_store_password.

trusted_cert_store is used in conjunction with the trusted_cert_subject property to specify client certificates. If trusted_cert_store has a value, and trusted_cert_subject or trusted_cert_encoded is set, a search for a certificate is initiated. Please see the trusted_cert_subject property for details.

Designations of certificate stores are platform-dependent.

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


MY	A certificate store holding personal certificates with their associated private keys.
CA	Certifying authority certificates.
ROOT	Root certificates.

The trusted_cert_index parameter specifies the index of the item in the array. The size of the array is controlled by the trusted_cert_count property.

trusted_cert_store_password Property

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

Syntax

def get_trusted_cert_store_password(trusted_cert_index: int) -> str: ...
def set_trusted_cert_store_password(trusted_cert_index: int, value: str) -> None: ...

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.

The trusted_cert_index parameter specifies the index of the item in the array. The size of the array is controlled by the trusted_cert_count property.

trusted_cert_store_type Property

This is the type of certificate store for this certificate.

Syntax

def get_trusted_cert_store_type(trusted_cert_index: int) -> int: ...
def set_trusted_cert_store_type(trusted_cert_index: int, value: int) -> None: ...

Default Value

Remarks

This is the type of certificate store for this certificate.


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 (PKCS12) file containing certificates.
3 (cstPFXBlob)	The certificate store is a string (binary or base64-encoded) representing a certificate store in PFX (PKCS12) 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 PKCS7 file containing certificates.
12 (cstP7BBlob)	The certificate store is a string (binary) representing a certificate store in PKCS7 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 PKCS11 interface. To use a security key the necessary data must first be collected using the CertMgr class. The list_store_certificates method may be called after setting cert_store_type to `cstPKCS11`, cert_store_password to the PIN, and cert_store to the full path of the PKCS11 dll. The certificate information returned in the on_cert_list event's `CertEncoded` parameter may be saved for later use. When using a certificate, pass the previously saved security key information as the trusted_cert_store and set trusted_cert_store_password 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.

The trusted_cert_index parameter specifies the index of the item in the array. The size of the array is controlled by the trusted_cert_count property.

trusted_cert_subject Property

This is the subject of the certificate used for client authentication.

Syntax

def get_trusted_cert_subject(trusted_cert_index: int) -> str: ...
def set_trusted_cert_subject(trusted_cert_index: int, value: str) -> None: ...

Default Value

Remarks

This is the subject of the certificate used for client authentication.

This property must be set after all other certificate properites are set. When this property is set, a search is performed in the current certificate store certificate with 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.


Field	Meaning
CN	Common Name. This is commonly a host name like www.server.com.
O	Organization
OU	Organizational Unit
L	Locality
S	State
C	Country
E	Email Address

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

The trusted_cert_index parameter specifies the index of the item in the array. The size of the array is controlled by the trusted_cert_count property.

use_ssl Property

Use SSL to access the RemoteHost .

Syntax

def get_use_ssl() -> bool: ...
def set_use_ssl(value: bool) -> None: ...

use_ssl = property(get_use_ssl, set_use_ssl)

Default Value

FALSE

Remarks

Use this property to determine whether the class uses SSL when clients connect.

This property is only valid when using version 2.0 of the protocol. If set to true, all clients that connect must use version 2.0.

change_direction Method

Sends a Change Direction (CD) command.

Syntax

def change_direction(connection_id: int) -> None: ...

Remarks

This method sends a Change Direction (CD) command to the client when called. In normal operation this should not be used. This should only be used if a condition arises where you must manually change the speaker when communicating with the client. For instance: component.ChangeDirection(MyConnectionId);

config Method

Sets or retrieves a configuration setting.

Syntax

def config(configuration_string: str) -> str: ...

Remarks

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

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

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

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

disconnect Method

This method disconnects the specified client.

Syntax

def disconnect(connection_id: int) -> None: ...

Remarks

Calling this method will disconnect the client specified by the ConnectionId parameter.

do_events Method

Processes events from the internal message queue.

Syntax

def do_events() -> None: ...

Remarks

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

exchange_certificate Method

Exchange a certificate with the remote host.

Syntax

def exchange_certificate(connection_id: int, client_sfid_code: str, certificate_store: str, certificate_exchange_type: int) -> None: ...

Remarks

If the remote host supports the certificate exchange feature of OFTP 2.0 this method may be used to send and/or request certificates.

The CertificateStore parameter specifies the location of the certificate to be exchanged. In most cases this will be the path to a .cer file on disk. If the certificate is in another format or is installed to the Windows certificate store please see ExchangeCertStoreType and ExchangeCertSubject for more information.

The CertificateExchangeType parameter determines the type of request. Possible values are:


0	Request: The class will send the certificate file specified. The remote host will respond with a certificate of it's own. The response may be in a separate session.
1	Replace: The class will send the certificate file specified. No certificate is expected in response. The certificate sent here invalidates any previous certificates the remote host has stored.
2	Deliver: The class will send the certificate file specified. This is used to respond to a certificate request. It may also be used to send new additional certificates to the remote host. This will not invalidate previous certificates the remote host has stored.

When the remote host sends a certificate to the class the received certificate will be provided through the on_certificate_received event.

import_trusted_certs Method

Imports a list of trusted CA certificates.

Syntax

def import_trusted_certs() -> None: ...

Remarks

When import_trusted_certs is called the class will import the CA certificates from the source specified by TrustedCertsData into the trusted_certs collection.

The class will then validate the trust of certificates when they are loaded.

If trusted CA certificates are not imported no validation will occur (default).

interrupt Method

This method interrupts a synchronous send to the remote host.

Syntax

def interrupt(connection_id: int) -> None: ...

Remarks

This property is called using the Connection Id if you wish to interrupt a connection and stop a file from uploading without disconnecting the client connected to the class. If you use send_file to upload a file, the class will run synchronously on that Connection Id until it is completed.

logoff Method

Ends a session with the connection client.

Syntax

def logoff(connection_id: int) -> None: ...

Remarks

This method will attempt to end the session with the client if the client has acknowledged it is finished sending files to the server. If the client still wishes to process commands, the method will give control back to the client and oftp_connection_ready_to_send will be false. When oftp_connection_ready_to_send is true, calling this method will end the session.

reset Method

Resets the state of the control.

Syntax

def reset() -> None: ...

Remarks

Reset resets the state of the class. All properties will be set to their default values.

send_end_response Method

Sends an EERP/NERP asynchronously.

Syntax

def send_end_response(connection_id: int, virtual_file_name: str, virtual_file_date: str, destination: str, originator: str, creator: str, reason_code: int, reason_text: str, file_hash: str, signature: str) -> None: ...

Remarks

This method sends an EERP/NERP. By default the class will automatically respond with an EERP/NERP when receiving a file. To respond asynchronously instead this method may be used.

To respond asynchronously first set the SendEndResponse parameter of the on_end_transfer event to False. This instructs the class to not send a response automatically. Within the on_end_transfer event you must also save the values that are required parameters for this method. This includes FileHash, VirtualFileDate, and VirtualFileName. Note: VirtualFileDateFormat must be set to a format that includes the necessary level of accuracy.

Destination should be set to the SFID of the remote host.

Originator should be set to the SFID of the local system. In the case that the class is being used as part of a gateway process to forward traffic to another OFTP host this may be set to the SFID of that host instead.

Creator should be set to the SFID of the local system.

Signature is only applicable if the application is acting as a routing application. In all other cases this should be set to empty string. In the case where the application is acting as a routing application the end response is being forwarded to another entity for processing. The Signature should be set to the value received in the on_end_response event (if populated).

ReasonCode and ReasonText are used to specify error information. If ReasonCode is set to 0 the class will send an EERP. If ReasonCode is set to any non-zero value the class will send a NERP. Common values are:


ReasonCode	ReasonText
3	User Code Not Known
4	Invalid Password
9	Unspecified Reason
11	Invalid FileName
12	Invalid Destination
13	Invalid Origin
14	Invalid Storage Record Format
15	Maximum Record Length Not Supported
16	File Size Too Big
20	Invalid Record Count
21	Invalid Byte Count
22	Access Method Failure
23	Duplicate File
24	File Direction Refused
25	Cipher Suite Not Supported
26	Encrypted File Not Allowed
27	Unencrypted File Not Allowed
28	Compression Not Allowed
29	Signed File Not Allowed
30	Unsigned File Not Allowed
31	File Signature Not Valid
32	File Decompression Failed
33	File Decryption Failed
34	File Processing Failed
35	Not Delivered To Recipient
36	Not Acknowledged By Recipient
50	Transmission Stopped By The Operator
90	File Size Incompatible With Recipient's Protocol Version
99	Unspecified Reason

send_file Method

Sends a file to the specified client.

Syntax

def send_file(connection_id: int, client_sfid_code: str, file_name: str, virtual_file_name: str) -> None: ...

Remarks

This method sends a file to the client specified by the ConnectionId parameter.

After the on_ready_to_send event fires or when the oftp_connection_ready_to_send property is true, this method can be used to send a file to the connected client specified by the ConnectionId parameter.

The ClientSFIDCode corresponds to the destination.

FileName must be the full path to the file which will be sent.

VirtualFileName may be specified to indicate the name of the file that the client will see when receiving the file.

If connections_upload_stream is set, pass empty string as the value for the FileName parameter.

When this method is called, the class will fire the on_start_transfer, on_transfer, and on_end_transfer events that can be monitored to check the status of the send. The send_file method will not return until either the transfer is complete or an error was encountered.

shutdown Method

This method shuts down the server.

Syntax

def shutdown() -> None: ...

Remarks

This method shuts down the server. Calling this method is equivalent to calling stop_listening and then breaking every client connection by calling disconnect.

start_listening Method

This method starts listening for incoming connections.

Syntax

def start_listening() -> None: ...

Remarks

This method begins listening for incoming connections on the port specified by local_port. Once listening, events will fire as new clients connect and data are transferred.

To stop listening for new connections, call stop_listening. To stop listening for new connections and to disconnect all existing clients, call shutdown.

stop_listening Method

This method stops listening for new connections.

Syntax

def stop_listening() -> None: ...

Remarks

This method stops listening for new connections. After being called, any new connection attempts will be rejected. Calling this method does not disconnect existing connections.

To stop listening and to disconnect all existing clients, call shutdown instead.

validate_cert Method

Validates the certificate with private key.

Syntax

def validate_cert() -> bool: ...

Remarks

This method optionally validates the certificate specified by certificate. It is not required to validate the certificate from a technical perspective, but may be desired to ensure the recipient's certificate is valid and issued by a trusted authority.

Before calling this method call import_trusted_certs to load the trusted certification information.

When this method is called the class:

Validates the certificate has not expired
Validates the certificate was issued by a CA in the trusted_certs collection. If the certificate is self-signed this step is skipped.
Validates the certificate has not been revoked. Note that the revocation check will only make use of the CRL distribution point identified in the certificate's extension. If the certificate does not contain a CRL distribution point extension this step is skipped.

validate_recipient_cert Method

Validates the recipient certificate.

Syntax

def validate_recipient_cert(connection_id: int) -> bool: ...

Remarks

This method optionally validates the certificate specified by oftp_connection_recipient_cert_subject. It is not required to validate the certificate from a technical perspective, but may be desired to ensure the recipient's certificate is valid and issued by a trusted authority.

Before calling this method call import_trusted_certs to load the trusted certification information.

When this method is called the class:

Validates the certificate has not expired
Validates the certificate was issued by a CA in the trusted_certs collection. If the certificate is self-signed this step is skipped.
Validates the certificate has not been revoked. Note that the revocation check will only make use of the CRL distribution point identified in the certificate's extension. If the certificate does not contain a CRL distribution point extension this step is skipped.

on_accept_connection Event

Fired when a client connects.

Syntax

class OFTPServerAcceptConnectionEventParams(object):
  @property
  def connection_id() -> int: ...

  @property
  def client_ssid_code() -> str: ...

  @property
  def client_password() -> str: ...

  @property
  def client_version() -> int: ...

  @property
  def server_version() -> int: ...
  @server_version.setter
  def server_version(value) -> None: ...

  @property
  def accept() -> bool: ...
  @accept.setter
  def accept(value) -> None: ...

  @property
  def error_code() -> int: ...
  @error_code.setter
  def error_code(value) -> None: ...

  @property
  def error_description() -> str: ...
  @error_description.setter
  def error_description(value) -> None: ...

# In class OFTPServer:
@property
def on_accept_connection() -> Callable[[OFTPServerAcceptConnectionEventParams], None]: ...
@on_accept_connection.setter
def on_accept_connection(event_hook: Callable[[OFTPServerAcceptConnectionEventParams], None]) -> None: ...

Remarks

This event fires when a new OFTP connection is made to the server. Use the parameters of this event to verify the identify of the client identified by the ConnectionId. By default the connection will be accepted. To reject the connection set Accept to false.

ClientVersion specifies the OFTP protocol version the client supports. By default the class will use the version requested by the client for the connection. If you wish to restrict connections to a specific OFTP protocol version use this value when determining whether or not to accept the connection. When rejecting the connection based on the OFTP protocol version use ErrorCode 10. Possible values are:


0	OFTP 1.2
1	OFTP 1.3
2	OFTP 1.4
3	OFTP 2.0

ServerVersion specifies the OFTP protocol version the server will use for the connection. By default this will be the same as ClientVersion. This may be set to a different version which will be sent back to the client. Possible values are:


0	OFTP 1.2
1	OFTP 1.3
2	OFTP 1.4
3	OFTP 2.0

When rejecting a connection the ErrorCode and ErrorDescription may optionally be set. Possible common values are:


ErrorCode	ErrorDescription
3	User Code Not Known
4	Invalid Password
9	Unspecified Reason
10	Mode or capabilities incompatible
99	Unspecified Reason

on_accept_file Event

Fired when the client sends a file.

Syntax

class OFTPServerAcceptFileEventParams(object):
  @property
  def connection_id() -> int: ...

  @property
  def virtual_file_name() -> str: ...

  @property
  def virtual_file_date() -> str: ...

  @property
  def destination() -> str: ...

  @property
  def originator() -> str: ...

  @property
  def accept() -> bool: ...
  @accept.setter
  def accept(value) -> None: ...

  @property
  def filename() -> str: ...
  @filename.setter
  def filename(value) -> None: ...

  @property
  def overwrite() -> bool: ...
  @overwrite.setter
  def overwrite(value) -> None: ...

  @property
  def error_code() -> int: ...
  @error_code.setter
  def error_code(value) -> None: ...

  @property
  def error_description() -> str: ...
  @error_description.setter
  def error_description(value) -> None: ...

# In class OFTPServer:
@property
def on_accept_file() -> Callable[[OFTPServerAcceptFileEventParams], None]: ...
@on_accept_file.setter
def on_accept_file(event_hook: Callable[[OFTPServerAcceptFileEventParams], None]) -> None: ...

Remarks

This event controls the behavior when the client sends a file to the server.

VirtualFileName holds the name of the file being received.

VirtualFileDate holds the date associated with the file in the format specified by VirtualFileDateFormat. The default value is "MM/dd/yyyy HH:mm:ss".

Destination identifies the receiver (SFID) code in the send file request. If the file was intended for this server this will match the value in server_sfid_code

Originator identifies the sender (SFID) code in the send file request.

Accept is true by default, and must be set to False in order to reject the file.

Filename will be populated with the full path and filename that will be written. It may be changed within this event to specify a new location. The Filename is determined by combining the path specified in oftp_connection_download_directory and the name received from the client.

Overwrite is false by default, but may be set to true to overwrite existing files on disk.

ErrorCode controls the error returned to the client when Accept is set to False. If this is not set the class will use a value of 99 to indicate a general error.

ErrorDescription may also be set to include an error message. If this is not set the class will automatically include an error message based on the ErrorCode specified. Common error codes and their corresponding error messages are listed below.


ErrorCode	ErrorMessage
1	Invalid filename.
2	Invalid destination.
3	Invalid origin.
4	Storage record format not supported.
5	Maximum record length not supported.
6	File size is too big.
10	Invalid record count.
11	Invalid byte count.
12	Access method failure.
13	Duplicate file.
14	File direction refused.
15	Cipher suite not supported.
16	Encrypted file not allowed.
17	Unencrypted file not allowed.
18	Compression not allowed.
19	Signed file not allowed.
20	Unsigned file not allowed.
99	Unspecified reason.

on_certificate_received Event

Fired when a certificate is received from the remote host.

Syntax

class OFTPServerCertificateReceivedEventParams(object):
  @property
  def connection_id() -> int: ...

  @property
  def certificate_file_name() -> str: ...

  @property
  def certificate_exchange_type() -> int: ...

# In class OFTPServer:
@property
def on_certificate_received() -> Callable[[OFTPServerCertificateReceivedEventParams], None]: ...
@on_certificate_received.setter
def on_certificate_received(event_hook: Callable[[OFTPServerCertificateReceivedEventParams], None]) -> None: ...

Remarks

This event provides information about the certificate file that was sent by the remote host.

When the remote host sends a certificate using the Certificate Exchange feature of OFTP 2.0, this event provides information about it. The certificate file will be written to the download_directory. After the file is written to download_directory this event will fire.

The CertificateFilemame parameter holds the filename of the received certificate.

The CertificateExchangeType parameter identifies the type of request associated with the certificate. Possible values are:


0	Request: The class received a certificate and request from the remote host. Respond using the exchange_certificate method using a CertificateExchangeType of 3 (Deliver). The response may be in a separate session.
1	Replace: The class received a certificate from the remote host. No response is expected. The certificate received here invalidates any previously stored certificates for this configuration.
2	Deliver: The class received a certificate from the remote host. This is either a response to a certificate request, or a new additional certificates from the remote host. This will not invalidate previous certificates stored for this configuration.

ConnectionId identifies the connected client.

on_connected Event

This event is fired immediately after a connection completes (or fails).

Syntax

class OFTPServerConnectedEventParams(object):
  @property
  def connection_id() -> int: ...

  @property
  def status_code() -> int: ...

  @property
  def description() -> str: ...

# In class OFTPServer:
@property
def on_connected() -> Callable[[OFTPServerConnectedEventParams], None]: ...
@on_connected.setter
def on_connected(event_hook: Callable[[OFTPServerConnectedEventParams], None]) -> None: ...

Remarks

If the connection is made normally, StatusCode is 0, and Description is "OK".

If the connection fails, StatusCode has the error code returned by the system. Description contains a description of this code. The value of StatusCode is equal to the value of the system error.

Please refer to the Error Codes section for more information.

on_connection_request Event

This event is fired when a request for connection comes from a remote host.

Syntax

class OFTPServerConnectionRequestEventParams(object):
  @property
  def address() -> str: ...

  @property
  def port() -> int: ...

  @property
  def accept() -> bool: ...
  @accept.setter
  def accept(value) -> None: ...

# In class OFTPServer:
@property
def on_connection_request() -> Callable[[OFTPServerConnectionRequestEventParams], None]: ...
@on_connection_request.setter
def on_connection_request(event_hook: Callable[[OFTPServerConnectionRequestEventParams], None]) -> None: ...

Remarks

This event indicates an incoming connection. The connection is accepted by default. Address and Port will contain information about the remote host requesting the inbound connection. If you want to refuse it, you can set the Accept parameter to False.

on_disconnected Event

This event is fired when a connection is closed.

Syntax

class OFTPServerDisconnectedEventParams(object):
  @property
  def connection_id() -> int: ...

  @property
  def status_code() -> int: ...

  @property
  def description() -> str: ...

# In class OFTPServer:
@property
def on_disconnected() -> Callable[[OFTPServerDisconnectedEventParams], None]: ...
@on_disconnected.setter
def on_disconnected(event_hook: Callable[[OFTPServerDisconnectedEventParams], None]) -> None: ...

Remarks

If the connection is broken normally, StatusCode is 0, and Description is "OK".

If the connection is broken for any other reason, StatusCode has the error code returned by the system. Description contains a description of this code. The value of StatusCode is equal to the value of the system error.

Please refer to the Error Codes section for more information.

on_end_response Event

Fired every time an end response is received from the client.

Syntax

class OFTPServerEndResponseEventParams(object):
  @property
  def connection_id() -> int: ...

  @property
  def virtual_file_name() -> str: ...

  @property
  def virtual_file_date() -> str: ...

  @property
  def destination() -> str: ...

  @property
  def originator() -> str: ...

  @property
  def creator() -> str: ...

  @property
  def reason_code() -> int: ...

  @property
  def reason_text() -> str: ...

  @property
  def file_hash() -> str: ...
  @file_hash.setter
  def file_hash(value) -> None: ...

  @property
  def signature() -> str: ...

  @property
  def direction() -> int: ...

# In class OFTPServer:
@property
def on_end_response() -> Callable[[OFTPServerEndResponseEventParams], None]: ...
@on_end_response.setter
def on_end_response(event_hook: Callable[[OFTPServerEndResponseEventParams], None]) -> None: ...

Remarks

This event contains information received from an either an End-To-End Response or a Negative End Response received from the server.

An End-To-End Response will not contain values for the ReasonCode, ReasonText, or Creator parameters.

VirtualFileName specifies the name of the file.

VirtualFileDate holds the VirtualFileDate value in the format specified by VirtualFileDateFormat. The default value is "MM/dd/yyyy HH:mm:ss".

Destination is the SFID of the destination system (this class).

Originator identifies the system that originated the end response. This is typically the same as Creator and holds the remote system's SFID.

Creator is the SFID of the remote system.

Direction specifies whether the end response is being received or sent. Possible values are:


0	Received
1	Sent

By default the class will only fire this event for received end responses. To configure the class to fire the event for both send and received end responses set FireEndResponseOnSend to True.

FileHash is populated if the OFTP Version is 2.0 and a signed receipt was originally requested. FileHash may also be specified with the expected value in the case where an asynchronous EndResponse is received. The expected value may be obtained from the on_end_transfer event when initially sending the file.

Signature is only applicable when the OFTP version is 2.0 and the application is acting as a routing application where the end response will be forwarded on to another entity. In this case Signature will be populated if the end response is signed. This should be stored and supplied when forwarding the response with the send_end_response method.

ReasonCode and ReasonText identify the error if a Negative End Response (NERP) was received. A value of 0 indicates there was no an error and the response is an End-To-End Response (EERP). Common values are:


ReasonCode	ReasonText
3	User Code Not Known
4	Invalid Password
9	Unspecified Reason
11	Invalid FileName
12	Invalid Destination
13	Invalid Origin
14	Invalid Storage Record Format
15	Maximum Record Length Not Supported
16	File Size Too Big
20	Invalid Record Count
21	Invalid Byte Count
22	Access Method Failure
23	Duplicate File
24	File Direction Refused
25	Cipher Suite Not Supported
26	Encrypted File Not Allowed
27	Unencrypted File Not Allowed
28	Compression Not Allowed
29	Signed File Not Allowed
30	Unsigned File Not Allowed
31	File Signature Not Valid
32	File Decompression Failed
33	File Decryption Failed
34	File Processing Failed
35	Not Delivered To Recipient
36	Not Acknowledged By Recipient
50	Transmission Stopped By The Operator
90	File Size Incompatible With Recipient's Protocol Version
99	Unspecified Reason

ConnectionId identifies the connected client.

on_end_transfer Event

Fired when a file finishes transferring.

Syntax

class OFTPServerEndTransferEventParams(object):
  @property
  def connection_id() -> int: ...

  @property
  def direction() -> int: ...

  @property
  def local_file() -> str: ...

  @property
  def virtual_file_name() -> str: ...

  @property
  def virtual_file_date() -> str: ...

  @property
  def destination() -> str: ...

  @property
  def originator() -> str: ...

  @property
  def reason_code() -> int: ...

  @property
  def reason_text() -> str: ...

  @property
  def file_size() -> int: ...

  @property
  def file_hash() -> str: ...

  @property
  def send_end_response() -> bool: ...
  @send_end_response.setter
  def send_end_response(value) -> None: ...

# In class OFTPServer:
@property
def on_end_transfer() -> Callable[[OFTPServerEndTransferEventParams], None]: ...
@on_end_transfer.setter
def on_end_transfer(event_hook: Callable[[OFTPServerEndTransferEventParams], None]) -> None: ...

Remarks

The on_end_transfer event is fired when a file is sent or received by the class.

The FileSize parameter gives the size of the file that was sent or received.

The Direction parameter shows whether the client or the server is sending the data.


0 (Client)	The file originated from the client.
1 (Server)	The file originated from the server.

VirtualFileName holds the filename.

VirtualFileDate holds the date associated with the file in the format specified by VirtualFileDateFormat. The default value is "MM/dd/yyyy HH:mm:ss".

Originator identifies the sender (SFID) code in the send file request.

Destination identifies the receiver (SFID) code in the send file request.

SendEndResponse indicates whether the EERP/NERP for this request should be sent synchronously or asynchronously. When this parameter is True (default) the class will automatically respond with an EERP/NERP synchronously. To respond asynchronously set this parameter to False. You may then use the send_end_response method to send the response at a later time. See send_end_response for more details. Note: VirtualFileDateFormat must be set to a format that includes the necessary level of accuracy.

FileHash holds the hash of the file being transmitted. This is only applicable when the OFTP version is 2.0 and the sender requested a signed receipt. When receiving files this value should be saved if you wish to respond asynchronously using send_end_response. See send_end_response for more details.

LocalFile holds the full path to the file that will be written.

ReasonCode and ReasonText identify the error if a Negative End Response (NERP) was received. A value of 0 indicates there was no an error and the response is an End-To-End Response (EERP). Common values are:


ReasonCode	ReasonText
3	User Code Not Known
4	Invalid Password
9	Unspecified Reason
11	Invalid FileName
12	Invalid Destination
13	Invalid Origin
14	Invalid Storage Record Format
15	Maximum Record Length Not Supported
16	File Size Too Big
20	Invalid Record Count
21	Invalid Byte Count
22	Access Method Failure
23	Duplicate File
24	File Direction Refused
25	Cipher Suite Not Supported
26	Encrypted File Not Allowed
27	Unencrypted File Not Allowed
28	Compression Not Allowed
29	Signed File Not Allowed
30	Unsigned File Not Allowed
31	File Signature Not Valid
32	File Decompression Failed
33	File Decryption Failed
34	File Processing Failed
35	Not Delivered To Recipient
36	Not Acknowledged By Recipient
50	Transmission Stopped By The Operator
90	File Size Incompatible With Recipient's Protocol Version
99	Unspecified Reason

ConnectionId identifies the connected client.

on_error Event

Information about errors during data delivery.

Syntax

class OFTPServerErrorEventParams(object):
  @property
  def connection_id() -> int: ...

  @property
  def error_code() -> int: ...

  @property
  def description() -> str: ...

# In class OFTPServer:
@property
def on_error() -> Callable[[OFTPServerErrorEventParams], None]: ...
@on_error.setter
def on_error(event_hook: Callable[[OFTPServerErrorEventParams], None]) -> None: ...

Remarks

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

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

ConnectionId contains the Id of the connection to which this error applies.

on_log Event

Fires once for each log message.

Syntax

class OFTPServerLogEventParams(object):
  @property
  def connection_id() -> int: ...

  @property
  def log_level() -> int: ...

  @property
  def message() -> str: ...

  @property
  def log_type() -> str: ...

# In class OFTPServer:
@property
def on_log() -> Callable[[OFTPServerLogEventParams], None]: ...
@on_log.setter
def on_log(event_hook: Callable[[OFTPServerLogEventParams], None]) -> None: ...

Remarks

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

ConnectionId identifies the connected client.

LogLevel indicates the level of message. Possible values are:


0 (None)	No messages are logged.
1 (Info - Default)	Informational events such as OFTP commands which are sent and received.
2 (Verbose)	Detailed data such as individual packet information is logged.
3 (Debug)	Debug data including all relevant sent and received bytes are logged.

Message is the log entry.

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

"Info"
"OFTP"

on_pi_trail Event

Fired when any protocol level communication occurs.

Syntax

class OFTPServerPITrailEventParams(object):
  @property
  def connection_id() -> int: ...

  @property
  def direction() -> int: ...

  @property
  def data() -> bytes: ...

  @property
  def command_id() -> int: ...

  @property
  def command_description() -> str: ...

# In class OFTPServer:
@property
def on_pi_trail() -> Callable[[OFTPServerPITrailEventParams], None]: ...
@on_pi_trail.setter
def on_pi_trail(event_hook: Callable[[OFTPServerPITrailEventParams], None]) -> None: ...

Remarks

This event provides information about the protocol level communication between the client and server.

The Direction parameter specifies who sent the command.


0 (Client)	The command originated from the connected client.
1 (Server)	The command originated from the server.

The CommandId and CommandDescription parameters specify which command was sent. The table below shows possible values.


CommandId	CommandDescription
50	SFPA (Start File Positive Answer)
51	SFNA (Start File Negative Answer)
52	EFPA (End File Positive Answer)
53	EFNA (End File Negative Answer)
65	AUCH (Authentication Challenge)
67	CDT (Set Credit)
68	DATA (Data Exchange Buffer)
69	EERP (End to End Response)
70	ESID (End Session)
72	SFID (Start File)
73	SSRM (Start Session Ready Message)
74	SECD (Security Change Direction)
78	NERP (Negative End Response)
80	RTR (Ready To Receive)
82	CD (Change Direction)
83	AURP (Authentication Response)
84	EFID (End File)
88	SSID (Start Session)

The Data parameter contains the raw OFTP packet.

on_ready_to_send Event

Fired when the class is ready to send data.

Syntax

class OFTPServerReadyToSendEventParams(object):
  @property
  def connection_id() -> int: ...

# In class OFTPServer:
@property
def on_ready_to_send() -> Callable[[OFTPServerReadyToSendEventParams], None]: ...
@on_ready_to_send.setter
def on_ready_to_send(event_hook: Callable[[OFTPServerReadyToSendEventParams], None]) -> None: ...

Remarks

The on_ready_to_send event indicates that the connected client is in a state where it can accept files sent from the server. When a client connects initially it will not be ready to receive files. After the client sends files (if any) to the server it will pass control to the server. At that time the ReadyToSend event will fire. In addition the oftp_connection_ready_to_send property will be set to true for the connection.

After this event fires send_file can be called to send files to the connected client.

on_ssl_client_authentication Event

This event is fired when the client presents its credentials to the server.

Syntax

class OFTPServerSSLClientAuthenticationEventParams(object):
  @property
  def connection_id() -> int: ...

  @property
  def cert_encoded() -> bytes: ...

  @property
  def cert_subject() -> str: ...

  @property
  def cert_issuer() -> str: ...

  @property
  def status() -> str: ...

  @property
  def accept() -> bool: ...
  @accept.setter
  def accept(value) -> None: ...

# In class OFTPServer:
@property
def on_ssl_client_authentication() -> Callable[[OFTPServerSSLClientAuthenticationEventParams], None]: ...
@on_ssl_client_authentication.setter
def on_ssl_client_authentication(event_hook: Callable[[OFTPServerSSLClientAuthenticationEventParams], None]) -> None: ...

Remarks

This event enables the server to decide whether or not to continue. The Accept parameter is a recommendation on whether to continue or to 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").

on_ssl_connection_request Event

This event fires when a Secure Sockets Layer (SSL) connection is requested.

Syntax

class OFTPServerSSLConnectionRequestEventParams(object):
  @property
  def connection_id() -> int: ...

  @property
  def supported_cipher_suites() -> str: ...

  @property
  def supported_signature_algs() -> str: ...

  @property
  def cert_store_type() -> int: ...
  @cert_store_type.setter
  def cert_store_type(value) -> None: ...

  @property
  def cert_store() -> str: ...
  @cert_store.setter
  def cert_store(value) -> None: ...

  @property
  def cert_password() -> str: ...
  @cert_password.setter
  def cert_password(value) -> None: ...

  @property
  def cert_subject() -> str: ...
  @cert_subject.setter
  def cert_subject(value) -> None: ...

# In class OFTPServer:
@property
def on_ssl_connection_request() -> Callable[[OFTPServerSSLConnectionRequestEventParams], None]: ...
@on_ssl_connection_request.setter
def on_ssl_connection_request(event_hook: Callable[[OFTPServerSSLConnectionRequestEventParams], None]) -> None: ...

Remarks

This event fires when an SSL connection is requested and ssl_provider is set to Internal. This event provides an opportunity to select an alternative certificate to the connecting client. This event does not fire when ssl_provider is set to Platform.

This event allows the class to be configured to use both RSA and ECDSA certificates depending on the connecting client's capabilities.

ConnectionId is the connection Id of the client requesting the connection.

SupportedCipherSuites is a comma-separated list of cipher suites that the client supports.

SupportedSignatureAlgs is a comma-separated list of certificate signature algorithms that the client supports.

CertStoreType is the store type of the alternate certificate to use for this connection. The class supports both public and private keys in a variety of formats. When the cstAuto value is used the class will automatically determine the type. This 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 (PKCS12) file containing certificates.
3 (cstPFXBlob)	The certificate store is a string (binary or base64-encoded) representing a certificate store in PFX (PKCS12) 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 PKCS7 file containing certificates.
12 (cstP7BBlob)	The certificate store is a string (binary) representing a certificate store in PKCS7 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 PKCS11 interface. To use a security key the necessary data must first be collected using the CertMgr class. The list_store_certificates method may be called after setting cert_store_type to `cstPKCS11`, cert_store_password to the PIN, and cert_store to the full path of the PKCS11 dll. The certificate information returned in the on_cert_list event's `CertEncoded` parameter may be saved for later use. When using a certificate, pass the previously saved security key information as the and set 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.

CertStore is the store name or location of the alternate certificate to use for this connection.

Designations of certificate stores are platform-dependent.

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


MY	A certificate store holding personal certificates with their associated private keys.
CA	Certifying authority certificates.
ROOT	Root certificates.

CertPassword is the password of the certificate store containing the alternate certificate to use for this connection.

CertSubject is the subject of the alternate certificate to use for this connection.

The special value * matches any subject and will select the first certificate in the 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 displayed below.


Field	Meaning
CN	Common Name. This is commonly a host name like www.server.com.
O	Organization
OU	Organizational Unit
L	Locality
S	State
C	Country
E	Email Address

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

on_ssl_status Event

This event is fired to show the progress of the secure connection.

Syntax

class OFTPServerSSLStatusEventParams(object):
  @property
  def connection_id() -> int: ...

  @property
  def message() -> str: ...

# In class OFTPServer:
@property
def on_ssl_status() -> Callable[[OFTPServerSSLStatusEventParams], None]: ...
@on_ssl_status.setter
def on_ssl_status(event_hook: Callable[[OFTPServerSSLStatusEventParams], None]) -> None: ...

Remarks

The event is fired for informational and logging purposes only. It is used to track the progress of the connection.

on_start_transfer Event

Fired when a document starts transferring.

Syntax

class OFTPServerStartTransferEventParams(object):
  @property
  def connection_id() -> int: ...

  @property
  def direction() -> int: ...

  @property
  def local_file() -> str: ...
  @local_file.setter
  def local_file(value) -> None: ...

  @property
  def virtual_file_name() -> str: ...

  @property
  def virtual_file_date() -> str: ...

  @property
  def destination() -> str: ...

  @property
  def originator() -> str: ...

# In class OFTPServer:
@property
def on_start_transfer() -> Callable[[OFTPServerStartTransferEventParams], None]: ...
@on_start_transfer.setter
def on_start_transfer(event_hook: Callable[[OFTPServerStartTransferEventParams], None]) -> None: ...

Remarks

This event fires when a file transfer begins.

Direction specifies if the client or server sent the file.


0 (Client)	The file originated from the client.
1 (Server)	The file originated from the server.

VirtualFileName holds the filename.

VirtualFileDate holds the date associated with the file in the format "MM/dd/yyyy HH:mm:ss".

Originator identifies the sender (SFID) code in the send file request.

Destination identifies the receiver (SFID) code in the send file request.

LocalFile holds the full path to the file that will be written.

ConnectionId identifies the connected client.

on_transfer Event

Fired while a document transfers (delivers document).

Syntax

class OFTPServerTransferEventParams(object):
  @property
  def connection_id() -> int: ...

  @property
  def direction() -> int: ...

  @property
  def local_file() -> str: ...

  @property
  def virtual_file_name() -> str: ...

  @property
  def virtual_file_date() -> str: ...

  @property
  def destination() -> str: ...

  @property
  def originator() -> str: ...

  @property
  def bytes_transferred() -> int: ...

  @property
  def text() -> bytes: ...

# In class OFTPServer:
@property
def on_transfer() -> Callable[[OFTPServerTransferEventParams], None]: ...
@on_transfer.setter
def on_transfer(event_hook: Callable[[OFTPServerTransferEventParams], None]) -> None: ...

Remarks

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

The BytesTransferred parameter contains the number of bytes transferred in this Direction since the beginning of the document text.

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

VirtualFileName holds the filename.

VirtualFileDate holds the date associated with the file in the format specified by VirtualFileDateFormat. The default value is "MM/dd/yyyy HH:mm:ss".

Originator identifies the sender (SFID) code in the send file request.

Destination identifies the receiver (SFID) code in the send file request.

LocalFile holds the full path to the file that will be written.

ConnectionId identifies the connected client.

OFTPServer Config Settings

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

OFTPServer Config Settings

AllowRetry[ConnectionId]: Whether to send a retry indicator when rejecting a file.

When rejecting a file from within the on_accept_file event if this setting is set to True the class will send a retry indicator value to the client to specify the file may be retried later. This should be set from within the on_accept_file event. For instance: component.Config("AllowRetry[" + e->ConnectionId + "]"); When set to False (default) the component will send a value indicating the client should not retry the send operation.

CDAfterSendEndResponse[ConnectionId]: Whether to issue a CD command after sending an asynchronous EERP.

By default the class will send a CD command after sending an asynchronous EERP and getting back a RTR (Ready to Receive) response. This gives control of the connection back to the client. If sending multiple asynchronous EERPs set this to False. After sending all of the EERPs use the change_direction method to explicitly change the speaker for the connection if desired.

CertificateStore[ConnectionId]: The name of the certificate store.

The name of the certificate store. This is used when specifying an alternative certificate for the specified connection.

The CertificateStoreType specifies the type of the certificate store specified by CertificateStore. If the store is password protected, specify the password in CertificateStorePassword.

CertificateStore is used in conjunction with the CertificateSubject field in order to specify the certificate.

Designations of certificate stores are platform-dependent.

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


MY	A certificate store holding personal certificates with their associated private keys.
CA	Certifying authority certificates.
ROOT	Root certificates.

CertificateStorePassword[ConnectionId]: The certificate password.

If the certificate store is of a type that requires a password, this property is used to specify that password in order to open the certificate store. This is used when specifying an alternative certificate for the specified connection.

CertificateStoreType[ConnectionId]: The type of certificate store.

This specifies the type of certificate store. This is used when specifying an alternative certificate for the specified connection. Possible values are:


0	User - This is the 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	Machine - For Windows, this specifies that the certificate store is a machine store. Note: This store type is not available in Java.
2	PFXFile - The certificate store is the name of a PFX (PKCS12) file containing certificates.
3	PFXBlob - The certificate store is a string (binary or Base64-encoded) representing a certificate store in PFX (PKCS12) format.
4	JKSFile - The certificate store is the name of a Java Key Store (JKS) file containing certificates. Note: This store type is available only in Java.
5	JKSBlob - 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 available only in Java.
6	PEMKeyFile - The certificate store is the name of a PEM-encoded file that contains a private key and an optional certificate.
7	PEMKeyBlob - The certificate store is a string (binary or Base64-encoded) that contains a private key and an optional certificate.
14	PPKFile - The certificate store is the name of a file that contains a PPK (PuTTY Private Key).
15	PPKBlob - The certificate store is a string (binary) that contains a PPK (PuTTY Private Key).
16	XMLFile - The certificate store is the name of a file that contains a certificate in XML format.
17	XMLBlob - The certificate store is a string that contains a certificate in XML format.

CertificateSubject[ConnectionId]: The certificate subject.

The subject of the certificate. This is used when specifying an alternative certificate for the specified connection.

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


Field	Meaning
CN	Common Name. This is commonly a host name like www.server.com.
O	Organization
OU	Organizational Unit
L	Locality
S	State
C	Country
E	Email Address

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

CertificateType: Specifies the type of certificate being supplied.

By default the class will use the certificate set in the certificate property for all operations that require a certificate. This setting allows for different certificates to be set for specific operations. First, specify the CertificateType via this setting and then set the certificate property. For instance: component.Config("CertificateType=3"); component.Certificate = mySigningCertificate; Possible values are:


0 (default)	All Operations
1	Session Authentication
2	Decryption
3	Signing
4	Receipt Signing

CertificateType[ConnectionId]: Specifies the type of certificate being supplied.

By default the class will use the alternate certificate specified by the CertificateSubject setting for all operations that require a certificate. This setting allows for different certificates to be set for specific operations. First, specify the CertificateType via this setting and then set the Certificate* configuration settings. For instance: component.Config("CertificateType[ConnectionId]=3"); component.Config("CertificateStoreType[ConnectionId]=2"); component.Config("CertificateStore[ConnectionId]=C:\\mycert.pfx"); component.Config("CertificateStorePassword[ConnectionId]=password"); component.Config("CertificateSubject[ConnectionId]=*"); Possible values are:


0 (default)	All Operations
1	Session Authentication
2	Decryption
3	Signing
4	Receipt Signing

ConnectionType[ConnectionId]: Specifies the type of connection that will be created.

Specifies the type of connection that is created. The default value is 0 (Both) in which the class can both send and receive files. However you can limit the class to only be able to send or receive files by specifying a value of 1 (Send Only) or 2 (Receive Only).

This may be set within the on_accept_connection event. It only applies to the connection parameters sent by the server to the client. It does not return the value sent by the client to the server. Valid values are:


0	Both (Default)
1	Send Only
2	Receive Only

For instance: component.Config("ConnectionType[" + e->ConnectionId + "]=1"); To check the value sent by the client to the server query ReceivedConnectionType[ConnectionId]; instead.

CreditCount[ConnectionId]: Specifies the maximum credit value.

This setting defines the maximum credit value to be sent in the initial connection (SSID command). The default value is 99 and the maximum value is 999. This setting may be used within the on_accept_connection event. Querying this setting inside the event will return the value provided by the connecting client. You may set this value within the event to specify the credit count that will be sent to the client.

When establishing a connection the smaller of the two values provided by the client and the server will be used. This setting may also be queried after a connection is established to determine the negotiated value.

For instance: string receivedCreditCount = component.Config("CreditCount[" + e->ConnectionId + "]"); component.Config("CreditCount[" + e->ConnectionId + "]=55");

DefaultIdleTimeout: The default idle timeout for inactive clients.

This property specifies the idle timeout (in seconds) for clients. When set to a positive value the class will disconnect idle clients after the specified timeout.

This only applies to clients that have not sent or received data within default_idle_timeout seconds.

If set to 0 (default) no idle timeout is applied.

Note: do_events must be called in order for the class to check existing connections.

DefaultReceiptHashAlgorithm: The receipt hash algorithm to request when sending a file.

The receipt hash algorithm specified in this setting is sent to the receiving party when a file is sent, and the receiving party should use this value when calculating the hash returned in the EERP or NERP receipt. Possible values are:


0	sha1 (Default)
1	sha256
2	sha512

DeleteOnError: Whether received files are deleted when there is an error during processing.

By default this value is True. When set to False and receiving a file, if the file is encrypted, signed, or compressed the file will be decrypted, verified, or decompressed. If there is an error during processing the original unprocessed file will be placed in download_directory. In that case you may choose what to do with the file based on the error reported during processing.

When this is set to True (default) and there is an error during processing the original unprocessed file will be deleted and no files will be placed in download_directory.

DisconnectAfterEndSession: Determines if the connection is closed immediately after ending the session.

By default when logoff is called the class will close the TCP connection after ending the session (the ESID command is sent). To let the other side close the connection after it has received the end session command (ESID), set this to False.

ExchangeBufferSize[ConnectionId]: Specifies the data exchange buffer size in bytes.

This setting defines the data exchange buffer size to be sent in the initial connection (SSID command) in bytes. The default value is 2048. This setting may be used within the on_accept_connection event. Querying this setting inside the event will return the value provided by the connecting client. You may set this value within the event to specify the data exchange buffer size that will be sent to the client.

For instance: string receivedExchangeBufferSize = component.Config("ExchangeBufferSize[" + e->ConnectionId + "]"); component.Config("ExchangeBufferSize[" + e->ConnectionId + "]=1024");

ExchangeCertStoreType: Specifies the store type when loading a certificate to be exchanged.

This specifies the certificate store type when loading a certificate that will be sent to the remote party. This is only applicable when calling exchange_certificate. The default value is "8" which indicates the certificate will be loaded from a file on disk. When the certificate is not in a .cer format or is located in the Windows certificate store this setting should be set to the appropriate value before calling exchange_certificate.

For a list of possible values please see cert_store_type. Also see ExchangeCertSubject.

ExchangeCertSubject: The subject of the certificate being exchanged.

This specifies the subject of the certificate being exchanged. This will be used to load the appropriate certificate when exchange_certificate is called. This is used in conjunction with ExchangeCertStoreType and is only necessary when loading a certificate from a store that may hold more than one certificate (such as a Windows certificate store).

FailOnUntrustedCert: Whether or not to throw an exception when untrusted certificates are used.

When trusted_certs is populated the class will validate that loaded certificates were issued by a trusted CA in trusted_certs. This setting controls the behavior when an untrusted certificate is found. By default this value is True and the class will throw an exception. If this is set to False the class will fire the on_error event but the error will not be fatal and the operation will be allowed to continue.

FileDescription[ConnectionId]: Additional description information sent with the file.

When sending a file this setting may be set to specify additional information. There is no restriction on the type of data supplied here. It may be set to a longer filename, or simply additional text data that you wish to pass to the receiver. The data supplied will be UTF-8 encoded by the class. The maximum length is 999 bytes (after UTF-8 encoding). This setting is only applicable when sending files.

For instance: component.Config("FileDescription[myConnectionId]=My File Description"); To obtain the FileDescription when receiving files use ReceivedFileDescription[ConnectionId]; instead.

FileHashAlgorithm[ConnectionId]: The hash algorithm to use when sending a file.

The file hash algorithm specified in this setting is used to calculate the hash sent along with an outgoing file. Possible values are:


0	sha1
1	sha256 (Default)
2	sha512

FireEndResponseOnSend: Determines if the EndResponse event is fired for outgoing EERP and NERPs.

If set to True (default) the class will fire the on_end_response event for both sent and received end responses. If set to False the on_end_response event will fire only for received (incoming) end responses. The Direction parameter of on_end_response determines if the end response is being sent or received. The default value is True.

FollowRedirects: Determines behavior when importing trusted certificates and a HTTP redirect is returned.

When TrustedCertsData holds a URL and import_trusted_certs is called the class makes a HTTP request to obtain the trusted certificates. If the server returns a HTTP redirect this setting specifies how the class will handle it. Possible values are:


0 (default)	Never follow redirects. An exception will be thrown.
1	Always follow redirects. The redirect will be automatically followed.
2	Follow same scheme redirects. Follow the redirect if it matches the same scheme (http:// or https://).

FriendlyLogFormat: Determines if a more friendly format is applied to PITrail event out.

This setting effects the content of the Data parameter of the on_pi_trail event. By default this setting is true and a format designed to be more easily read is used. If set to false the Data parameter will hold the raw unformatted protocol level content.

IdleTimeout: The idle timeout for this connection.

This field is similar to DefaultIdleTimeout but may be set on a per-connection basis to override DefaultIdleTimeout. This field specifies the idle timeout (in seconds) for the connected client. When set to a positive value the component will disconnect idle clients after the specified timeout. This only applies to clients that have not send to received data within the specified number of seconds. If set to 0 (default) no idle timeout is applied.

For instance: component.Config("IdleTimeout[" + e->ConnectionId + "]=1"); Note: do_events must be called in order for the class to check existing connections.

KeepAlive: This property enables the SO_KEEPALIVE option on the incoming connections. This option prevents long connections from timing out in case of inactivity.

The default value is False. When True, KEEPALIVE packets are enabled (for long connections).

Please note that system TCP/IP stack implementations are not required to support SO_KEEPALIVE.

This property is shared among incoming connections. When the property is set, the corresponding value is set for incoming connections as they are accepted. Existing connections are not modified.

Linger: This property controls how a connection is closed. The default is True. In this case the connection is closed only after all the data is sent. Setting it to False forces an abrupt (hard) disconnection. Any data that was in the sending queue may be lost.

When set to True, connections are terminated gracefully.

The default behavior (which is also the default mode for stream sockets) might result in an indefinite delay in closing the connection. Although the class returns control immediately, the system might indefinitely hold system resources until all pending data is sent (even after your application closes). This means that valuable system resources might be wasted.

Setting this property to False forces an immediate disconnection. If you know that the other side has received all the data you have sent (by a client acknowledgment, for example), setting this property to False might be the appropriate course of action.

This property is shared among incoming connections. When the property is set, the corresponding value is set for incoming connections as they are accepted. Existing connections are not modified.

LogLevel: The level of information to log.

This setting specifies the level of detail that is logged to the on_log event. Possible values are:


0 (None)	No messages are logged.
1 (Info - Default)	Informational events such as OFTP commands which are sent and received.
2 (Verbose)	Detailed data such as individual packet information is logged.
3 (Debug)	Debug data including all relevant sent and received bytes are logged.

ReceivedConnectionType[ConnectionId]: Returns the connection type specified by the client.

This setting returns the connection type specified by the client. It may be queried to determine the type of connection requested by the client.

This setting returns the type of connection being created. This may be queried within the on_accept_connection event or any time after. It only applies to the connection parameters sent by the client to the server. Valid values are:


0	Both (Default)
1	Send Only
2	Receive Only

For instance: string receivedConnectionType = component.Config("ReceivedConnectionType[" + e->ConnectionId + "]");

ReceivedFileDateTime[ConnectionId]: The datetime of the file being received.

This setting may be queried to obtain the datetime of the received file.

ReceivedFileDescription[ConnectionId]: Additional description information received with the file.

Query this setting after receiving a file to obtain any additional information provided by the client. The data will be UTF-8 decoded by the class.

For instance: string receivedFileDescription = component.Config("ReceivedFileDescription[" + e->ConnectionId + "]");

ReceivedFileEncryptionAlg[ConnectionId]: The encryption algorithm used for the file being received.

This setting may be queried inside the on_accept_file or on_end_transfer events to obtain the encryption algorithm used by the client for encryption of the file being received. The possible values are:


0	3DES (Triple Data Encryption Standard).
1	AES (Advanced Encryption Standard with key length of 128).

ReceivedFileName[ConnectionId]: Returns the name of the received file.

This setting may be queried inside the on_end_transfer event to obtain the name of the received file on disk. This includes the full path to the file on disk.

ReceivedFileNameFormat: The name format of received files.

This setting specifies the format used when determining the local filename of a received file. The use of macros is supported to provide flexibility. This setting may include one or more of the following values:

%VirtualFileName%
%VirtualFileDate%
%Originator%
%Destination%
%UserData%
%CurrentTime%
%GUID%

An example value is "%VirtualFileName%_%VirtualFileDate%_%Destination%". The default value is "%VirtualFileName%".

The '%VirtualFileDate%' macro also supports date formatting through the use of an optional DateTime format string. The format of the macro with the date format string included is:

%VirtualFileDate:CustomFormat%

For example: "%VirtualFileDate:yyyyMMddHHmmssffff%"

ReceivedFileNameFormat[ConnectionId]: The name format of received files.

%VirtualFileName%
%VirtualFileDate%
%Originator%
%Destination%
%UserData%
%CurrentTime%
%GUID%

An example value is "%VirtualFileName%_%VirtualFileDate%_%Destination%". The default value is "%VirtualFileName%".

The '%VirtualFileDate%' macro also supports date formatting through the use of an optional DateTime format string. The format of the macro with the date format string included is:

%VirtualFileDate:CustomFormat%

For example: "%VirtualFileDate:yyyyMMddHHmmssffff%"

RecipientCertificateType: Specifies the type of recipient certificate being supplied.

By default the class will use the certificate set in the recipient_cert property for all operations that require a certificate. This setting allows for different certificates to be set for specific operations. First, specify the RecipientCertificateType via this setting and then set the recipient_cert property. For instance: component.Config("RecipientCertificateType=3"); component.RecipientCert = mySignatureVerificationCertificate; Possible values are:


0 (default)	All Operations
1	Session Authentication
2	Encryption
3	Signature Verification
4	Receipt Signature Verification

Retry[ConnectionId]: Indicates whether the recipient allows the send to be retried.

When sending files the recipient may reject the file for a number of reasons. The recipient may indicate that the operation can be re-attempted later. Query this setting after a send attempt was rejected to determine if the recipient allows retries. This setting will return either True or False.

SecureAuthentication: Specifies secure authentication requirements for connecting clients.

This setting specifies the secure authentication requirements for connecting clients. Secure auth can be allowed, required, or disallowed. Possible values are:


0	Disallowed. Secure authentication is not allowed and will result in an error.
1	Required. Secure authentication is required. If secure authentication is not supported by the client the connection will result in an error.
2 (default)	Automatic. Secure authentication is allowed but not required.

SendCDAfterEFPA: Specifies whether a CD is always sent after receiving an EFPA.

When sending a file the recipient will respond with an EFPA once the file is received. Within this response is an indicator which tells the sender whether to issue a CD (Change Direction) command. The indicator is read by the class and a CD command is sent if requested. If a CD is not requested then no CD is sent.

When set to True, this overrides the default behavior and will always send a CD command regardless of whether the indicator is set in the EFPA.

This should only be set if there is a specific reason to do so. In most cases it is not necessary.

ServerPassword[ConnectionId]: Sets or gets the ServerPassword for a particular connection.

This setting may be used to override the default server_password. This allows for different ServerPasswords to be used for different connected clients. This can be changed at any time, for instance within the on_accept_connection.

ServerSFIDCode[ConnectionId]: Sets or gets the ServerSFIDCode for a particular connection.

This setting may be used to override the default server_sfid_code when calling send_file. This allows for different ServerSFIDCodes to be used for different connected clients. This can be changed at any time prior to calling send_file. When receiving files this will be populated with the ServerSFIDCode received from the client.

ServerSSIDCode[ConnectionId]: Sets the ServerSSIDCode for a particular connection.

This setting may be used to override the default server_ssid_code. This allows for different ServerSSIDCodes to be used for different connected clients. This can be set from within the on_accept_connection event.

TempPath[ConnectionId]: The path of a directory where temporary files will be created.

Under certain conditions, the class will create temporary files before processing a file. The location of the temporary files is determined by this setting. Temporary files are created when sending a file to the client if any of the following conditions are true.

oftp_connection_compress is true
oftp_connection_virtual_file_security_level is set to slEncrypted
oftp_connection_virtual_file_security_level is set to slSigned
oftp_connection_virtual_file_security_level is set to slEncryptedAndSigned

Note that oftp_connection_virtual_file_security_level is only applicable when oftp_connection_version is set to oftpVer20.

This configuration setting can be set with or without a ConnectionId specified. When the ConnectionId is specified, this will cause temporary files for that connection to be written to the specified directory. Otherwise, if no ConnectionId is specified, temporary files for all connections will be written to the given folder.

TrustedCertsData: Specifies the source to be used when importing trusted certificates.

When import_trusted_certs is called it will attempt to import certificates from the location specified here. By default this is the URL provided by Odette (http://www.odette.org/TSL/TSL_OFTP2.XML). This is the live list of CA certificates hosted by Odette. This may also be set to an absolute file path to load certificates from an offline source, or a string value containing the trusted CA certificates.

VirtualFileDateFormat: The DateTime format of received files.

This setting specifies the DateTime format used by the class when reporting the VirtualFileDate of received files. The default format is "MM/dd/yyyy HH:mm:ss".

When using OFTP v2.0 If the class is configured to respond to EERP and NERP messages asynchronously this should be set to the value "yyyyMMddHHmmssffff" or a similar format that includes the same level of accuracy. This is required to ensure that when calling send_end_response the value saved from within the on_end_transfer event has the necessary data when sending a response.

TCPServer Config Settings

AllowedClients: A comma-separated list of host names or IP addresses that can access the class.

This configuration setting defines a comma-separated list of host names or IPv4 addresses that may access the class. The wildcard character "*" is supported. The default value is "*" and all connections are accepted.

When a client connects, the client's address is checked against the list defined here. If there is no match, the on_connection_request event fires with an Accept value set to False. If no action is taken within the on_connection_request event, the client will be disconnected.

BindExclusively: Whether or not the component considers a local port reserved for exclusive use.

If this is True (default), the component will bind to the local port with the ExclusiveAddressUse option set, meaning that nothing else can bind to the same port. Also the component will not be able to bind to local ports that are already in use by some other instance, and attempts to do so will result in failure.

BlockedClients: A comma-separated list of host names or IP addresses that cannot access the class.

This configuration setting defines a comma-separated list of host names or IPv4 addresses that cannot access the class.The default value is "" and all connections are accepted.

When a client connects, the client's address is checked against the list defined here. If there is a match, the on_connection_request event fires with an Accept value set to False. If no action is taken within the on_connection_request event, the client will not be connected.

ConnectionUID: The unique connectionId for a connection.

Connection Ids may be reused as clients connect and disconnect. Querying ConnectionUID will return a unique identifier for that connection Id. If the specified connection Id does not exist, then ConnectionUID will return 0. For example:

Connection5UID = obj.config("ConnectionUID[5]")

DefaultConnectionTimeout: The inactivity timeout applied to the SSL handshake.

This configuration setting specifies the inactivity (in seconds) to apply to incoming Secure Sockets Layer (SSL) connections. When set to a positive value, if the other end is unresponsive for the specified number of seconds, the connection will timeout. This is not applicable to the entire handshake. It is applicable only to the inactivity of the connecting client during the handshake if a response is expected and none is received within the timeout window. The default value is 0, and no connection-specific timeout is applied.

Note: This is applicable only to incoming SSL connections. This should be set only if there is a specific reason to do so.

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. Increasing the value of the InBufferSize setting can provide significant improvements in performance in some cases.

Some TCP/IP implementations do not support variable buffer sizes. If that is the case, when the class is activated, the InBufferSize reverts to its defined size. The same thing will happen if you attempt to make it too large or too small.

InBufferSize is shared among incoming connections. When the property is set, the corresponding value is set for incoming connections as they are accepted. Existing connections are not modified.

KeepAliveInterval: The retry interval, in milliseconds, to be used when a TCP keep-alive packet is sent and no response is received.

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 setting specifies the interval at which the successive keep-alive packets are sent in milliseconds. If this value is not specified here, the system default is 1 second. This setting is applicable to all connections.

Note: This value is not applicable in macOS.

KeepAliveRetryCount: The number of keep-alive packets to be sent before the remotehost is considered disconnected.

When set, TCPKeepAlive will automatically be set to True. A TCP keep-alive packet will be sent after a period of inactivity, as defined by KeepAliveTime. If no acknowledgment is received from the remote host, the keep-alive packet will be sent again. This setting specifies the number of times that the keep-alive packets will be sent again before the remote host is considered disconnected. If this value is not specified here, the system default is 9.

Note: This configuration setting is available only in the Unix platform, and it is not supported in macOS or FreeBSD.

KeepAliveTime: The inactivity time in milliseconds before a TCP keep-alive packet is sent.

By default, the operating system will determine the time a connection is idle before a TCP keep-alive packet is sent. If this value is not specified here, the system default is 2 hours. In many cases, a shorter interval is more useful. Set this value to the desired interval in milliseconds. This setting is applicable to all connections.

MaxConnections: The maximum number of connections available.

This is the maximum number of connections available. This property must be set before listening is set to True, and once set, it can no longer be changed for the current instance of the class. The maximum value for this setting is 100,000 connections. Use this setting with caution. Extremely large values may affect performance. The default value is 1000.

Note: Unix/Linux operating systems limit the number of simultaneous connections to 1024.

MaxReadTime: The maximum time spent reading data from each connection.

This setting specifies the maximum time in milliseconds that the class will spend reading data from a particular connection before servicing other connections. When a single client is sending data to the class at a high rate this setting is used to ensure that other connections are serviced in a timely manner. Specifying a positive value prevents a single client from monopolizing the class's resources. The special value of 0 indicates no limit and is generally not recommended.

The default value is 50 (milliseconds).

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. Increasing the value of the OutBufferSize setting can provide significant improvements in performance in some cases.

Some TCP/IP implementations do not support variable buffer sizes. If that is the case, when the class is activated the OutBufferSize reverts to its defined size. The same thing will happen if you attempt to make it too large or too small.

OutBufferSize is shared among incoming connections. When the property is set, the corresponding value is set for incoming connections as they are accepted. Existing connections are not modified.

TcpNoDelay: Whether or not to delay when sending packets.

When true, the socket will send all data that is ready to send at once. When false, the socket will send smaller buffered packets of data at small intervals. This is known as the Nagle algorithm.

By default, this config is set to false.

UseIOCP: Whether to use the completion port I/O model.

The default value is False. When set to True, the class will use an I/O Completion Port (IOCP) to manage operations on sockets. A single completion port allows the asynchronous notification of network events on an entire group of sockets. This property must be set before listening is set to True.

Nothing else is required to begin accepting IOCP connections. One major benefit to using this model is that there will be no thread blocked waiting for a request to complete. The system notifies the process through an Asynchronous Procedure Call (APC) once the device driver finishes servicing the I/O request. IOCP allows a single I/O worker thread handle multiple clients' input/output "fairly".

Note: When set to True, this setting will automatically set UseWindowsMessages to False.

UseIPv6: Whether to use IPv6.

When set to 0 (default), the class will use IPv4 exclusively. When set to 1, the class will use IPv6 exclusively. When set to 2, the class will listen for both IPv4 and IPv6 connections. If IPv6 is not available on the system, only IPv4 will be used. The default value is 0. Possible values are as follows:


0	IPv4 Only
1	IPv6 Only
2	IPv6 and IPv4

UseWindowsMessages: Whether to use the WSAAsyncSelect I/O model.

The default value is True, and the class will receive a Windows message-based notification of network events. Turning on Windows message notifications allows the application to get connect, send, receive, and socket closure network event notifications on a socket. This property must be set before listening is set to True.

Nothing else is required to begin accepting connections using the Windows message queue. In high-traffic environments, messages will be discarded if the queue is full. Additionally, because a single window procedure will service all events on thousands of sockets, the Windows message queue is not scalable from a performance perspective.

If this setting is set to False, the class will instead use the Winsock select model instead.

SSL Config Settings

LogSSLPackets: Controls whether SSL packets are logged when using the internal security API.

When ssl_provider is set to Internal, this setting controls whether SSL packets should be logged. By default, this setting is False, as it is only useful for debugging purposes.

When enabled, SSL packet logs are output using the on_ssl_status event, which will fire each time an SSL packet is sent or received.

Enabling this setting has no effect if ssl_provider 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 etc). OpenSSL recommends to use 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

-----BEGIN CERTIFICATE-----

... (CA certificate in base64 encoding) ...

-----END CERTIFICATE-----

sequences. Before, between, and after the certificates text is allowed which can be used e.g. for descriptions of the certificates. Please refer to the OpenSSL man page SSL_CTX_load_verify_locations(3) for details.

OpenSSLCipherList: A string that controls the ciphers to be used by SSL.

This functionality is available only when the provider is OpenSSL.

The format of this string is described in the OpenSSL man page ciphers(1) section "CIPHER LIST FORMAT". Please refer to it for details. The default string "DEFAULT" is determined at compile time and is normally equivalent to "ALL:!ADH:RC4+RSA:+SSLv2:@STRENGTH".

OpenSSLPrngSeedData: The data to seed the pseudo random number generator (PRNG).

This functionality is available only when the provider is OpenSSL.

By default OpenSSL uses the device file "/dev/urandom" to seed the PRNG and setting OpenSSLPrngSeedData is not required. If set, the string specified is used to seed the PRNG.

ReuseSSLSession: Determines if the SSL session is reused.

If set to true, the class will reuse the context if and only if the following criteria are met:

The target host name is the same.
The system cache entry has not expired (default timeout is 10 hours).
The application process that calls the function is the same.
The logon session is the same.
The instance of the class is the same.

SSLCACertFilePaths: The paths to CA certificate files on Unix/Linux.

This setting specifies the paths on disk to CA certificate files on Unix/Linux.

The value is formatted as a list of paths separated by semicolons. The class will check for the existence of each file in the order specified. When a file is found the CA certificates within the file will be loaded and used to determine the validity of server or client certificates.

The default value is:

/etc/ssl/ca-bundle.pem;/etc/pki/tls/certs/ca-bundle.crt;/etc/ssl/certs/ca-certificates.crt;/etc/pki/tls/cacert.pem

SSLCACerts: A newline separated list of CA certificate to use during SSL client authentication.

This setting specifies one or more CA certificates to be included in the request when performing SSL client authentication. Some servers require the entire chain, including CA certificates, to be presented when performing SSL client authentication. The value of this setting is a newline (CrLf) separated list of certificates. For instance:

-----BEGIN CERTIFICATE-----
MIIEKzCCAxOgAwIBAgIRANTET4LIkxdH6P+CFIiHvTowDQYJKoZIhvcNAQELBQAw
...
eWHV5OW1K53o/atv59sOiW5K3crjFhsBOd5Q+cJJnU+SWinPKtANXMht+EDvYY2w
F0I1XhM+pKj7FjDr+XNj
-----END CERTIFICATE-----
\r \n
-----BEGIN CERTIFICATE-----
MIIEFjCCAv6gAwIBAgIQetu1SMxpnENAnnOz1P+PtTANBgkqhkiG9w0BAQUFADBp
..
d8q23djXZbVYiIfE9ebr4g3152BlVCHZ2GyPdjhIuLeH21VbT/dyEHHA
-----END CERTIFICATE-----

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

This setting specifies whether the class will check the Certificate Revocation List specified by the server certificate. If set to 1 or 2, the class will first obtain the list of CRL URLs from the server certificate's CRL distribution points extension. The class 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 class fails with an error.

When set to 0 (default) the CRL check will not be performed by the class. When set to 1, it will attempt to perform the CRL check, but 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 only supported in the Java, C#, and C++ editions. In the C++ edition, it is only supported on Windows operating systems.

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

This setting specifies whether the class will use OCSP to check the validity of the server certificate. If set to 1 or 2, the class will first obtain the OCSP URL from the server certificate's OCSP extension. The class 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 class fails with an error.

When set to 0 (default) the class will not perform an OCSP check. When set to 1, it will attempt to perform the OCSP check, but 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 only supported in the Java, C#, and C++ editions. In the C++ edition, it is only supported on Windows operating systems.

SSLCipherStrength: The minimum cipher strength used for bulk encryption.

This minimum cipher strength 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.

Please note that this setting contains the minimum cipher strength requested from the security library. The actual cipher strength used for the connection is shown by the on_ssl_status event.

Use this 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 config setting.

SSLEnabledCipherSuites: The cipher suite to be used in an SSL negotiation.

The enabled cipher suites to be used in SSL negotiation.

By default, the enabled cipher suites will include all available ciphers ("*").

The special value "*" means that the class will pick all of the supported cipher suites. If SSLEnabledCipherSuites is set to any other value, only the specified cipher suites will be considered.

Multiple cipher suites are separated by semicolons.

Example values when ssl_provider is set to Platform: obj.config("SSLEnabledCipherSuites=*"); obj.config("SSLEnabledCipherSuites=CALG_AES_256"); obj.config("SSLEnabledCipherSuites=CALG_AES_256;CALG_3DES"); Possible values when ssl_provider is set to Platform include:

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 ssl_provider is set to Internal:

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_DH_ANON_WITH_AES_128_CBC_SHA");

Possible values when ssl_provider is set to Internal include:

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_DH_RSA_WITH_AES_128_GCM_SHA256 (Not Recommended)
TLS_DH_RSA_WITH_AES_256_GCM_SHA384 (Not Recommended)
TLS_DH_DSS_WITH_AES_128_GCM_SHA256 (Not Recommended)
TLS_DH_DSS_WITH_AES_256_GCM_SHA384 (Not Recommended)
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.

Used to enable/disable the supported security protocols.

Not all supported protocols are enabled by default (the value of this setting is 4032). If you want more granular control over the enabled protocols, you can set this property to the binary 'OR' of one or more of the following values:


TLS1.3	12288 (Hex 3000)
TLS1.2	3072 (Hex C00) (Default)
TLS1.1	768 (Hex 300) (Default)
TLS1	192 (Hex C0) (Default)
SSL3	48 (Hex 30)
SSL2	12 (Hex 0C)

SSLEnabledProtocols - TLS 1.3 Notes

By default when TLS 1.3 is enabled the class will use the internal TLS implementation when the ssl_provider is set to Automatic for all editions.

In editions which are designed to run on Windows ssl_provider 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 only supported 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 only available 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 the above 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.

SSLEnableRenegotiation: Whether the renegotiation_info SSL extension is supported.

This setting specifies whether the renegotiation_info SSL extension will be used in the request when using the internal security API. This setting is True by default, but can be set to False to disable the extension.

This setting is only applicable when ssl_provider is set to Internal.

SSLIncludeCertChain: Whether the entire certificate chain is included in the SSLServerAuthentication event.

This setting specifies whether the Encoded parameter of the on_ssl_server_authentication 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 on_ssl_server_authentication event.

If set to True all certificates returned by the server will be present in the Encoded parameter of the on_ssl_server_authentication 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 setting optionally specifies the full path to a file on disk where per-session secrets are stored for debugging purposes.

When set, the class will save the session secrets in the same format as the SSLKEYLOGFILE environment variable functionality used by most major browsers and tools such as Chrome, Firefox, and cURL. This file can then be used in tools such as Wireshark to decrypt TLS traffice for debugging purposes. When writing to this file the class will only append, it will not overwrite previous values.

Note: This setting is only applicable when ssl_provider is set to Internal.

SSLNegotiatedCipher: Returns the negotiated ciphersuite.

Returns the ciphersuite negotiated during the SSL handshake.

Note: For server components (e.g. TCPServer) this is a per-connection setting accessed by passing the ConnectionId. For example: server.Config("SSLNegotiatedCipher[connId]");

SSLNegotiatedCipherStrength: Returns the negotiated ciphersuite strength.

Returns the strength of the ciphersuite negotiated during the SSL handshake.

Note: For server components (e.g.TCPServer) this is a per-connection setting accessed by passing the ConnectionId. For example: server.Config("SSLNegotiatedCipherStrength[connId]");

SSLNegotiatedCipherSuite: Returns the negotiated ciphersuite.

Returns the ciphersuite negotiated during the SSL handshake represented as a single string.

Note: For server components (e.g. TCPServer) this is a per-connection setting accessed by passing the ConnectionId. For example: server.Config("SSLNegotiatedCipherSuite[connId]");

SSLNegotiatedKeyExchange: Returns the negotiated key exchange algorithm.

Returns the key exchange algorithm negotiated during the SSL handshake.

Note: For server components (e.g. TCPServer) this is a per-connection setting accessed by passing the ConnectionId. For example: server.Config("SSLNegotiatedKeyExchange[connId]");

SSLNegotiatedKeyExchangeStrength: Returns the negotiated key exchange algorithm strength.

Returns the strenghth of the key exchange algorithm negotiated during the SSL handshake.

Note: For server components (e.g. TCPServer) this is a per-connection setting accessed by passing the ConnectionId. For example: server.Config("SSLNegotiatedKeyExchangeStrength[connId]");

SSLNegotiatedVersion: Returns the negotiated protocol version.

Returns the protocol version negotiated during the SSL handshake.

Note: For server components (e.g. TCPServer) this is a per-connection 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 or-ed together to exclude multiple conditions:


0x00000001	Ignore time validity status of certificate.
0x00000002	Ignore time validity status of CTL.
0x00000004	Ignore non-nested certificate times.
0x00000010	Allow unknown Certificate Authority.
0x00000020	Ignore wrong certificate usage.
0x00000100	Ignore unknown certificate revocation status.
0x00000200	Ignore unknown CTL signer revocation status.
0x00000400	Ignore unknown Certificate Authority revocation status.
0x00000800	Ignore unknown Root revocation status.
0x00008000	Allow test Root certificate.
0x00004000	Trust test Root certificate.
0x80000000	Ignore non-matching CN (certificate CN not-matching server name).

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

SSLServerCACerts: A newline separated list of CA certificate to use during SSL server certificate validation.

This setting optionally specifies one or more CA certificates to be used when 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 setting should only be set 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 setting is a newline (CrLf) separated list of certificates. For instance:

-----BEGIN CERTIFICATE-----
MIIEKzCCAxOgAwIBAgIRANTET4LIkxdH6P+CFIiHvTowDQYJKoZIhvcNAQELBQAw
...
eWHV5OW1K53o/atv59sOiW5K3crjFhsBOd5Q+cJJnU+SWinPKtANXMht+EDvYY2w
F0I1XhM+pKj7FjDr+XNj
-----END CERTIFICATE-----
\r \n
-----BEGIN CERTIFICATE-----
MIIEFjCCAv6gAwIBAgIQetu1SMxpnENAnnOz1P+PtTANBgkqhkiG9w0BAQUFADBp
..
d8q23djXZbVYiIfE9ebr4g3152BlVCHZ2GyPdjhIuLeH21VbT/dyEHHA
-----END CERTIFICATE-----

TLS12SignatureAlgorithms: Defines the allowed TLS 1.2 signature algorithms when SSLProvider is set to Internal.

This setting specifies the allowed server certificate signature algorithms when ssl_provider is set to Internal and SSLEnabledProtocols is set to allow TLS 1.2.

When specified the class will verify that the server certificate signature algorithm is among the values specified in this setting. If the server certificate signature algorithm is unsupported the class fails with an error.

The format of this value is a comma separated list of hash-signature combinations. For instance: component.SSLProvider = TCPClientSSLProviders.sslpInternal; component.Config("SSLEnabledProtocols=3072"); //TLS 1.2 component.Config("TLS12SignatureAlgorithms=sha256-rsa,sha256-dsa,sha1-rsa,sha1-dsa"); The default value for this 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.

In order to not restrict the server's certificate signature algorithm, specify an empty string as the value for this setting, which will cause the signature_algorithms TLS 1.2 extension to not be sent.

TLS12SupportedGroups: The supported groups for ECC.

This 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 ssl_provider 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 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 round trip 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 setting.

Note: All supported groups can always be used during the handshake even if not listed here, but if a group is used which is not present in this list it will incur an additional round trip and time to generate the key share for that group.

In most cases this setting does not need to be modified. This should only be modified 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 setting holds a comma separated list of allowed signature algorithms. Possible values are:

"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 setting is only applicable when SSLEnabledProtocols includes TLS 1.3.

TLS13SupportedGroups: The supported groups for (EC)DHE key exchange.

This setting specifies a comma separated list of named groups used in TLS 1.3 for key exchange. This setting should only be modified 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)

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:


Identifier	Name
037	IBM EBCDIC - U.S./Canada
437	OEM - United States
500	IBM EBCDIC - International
708	Arabic - ASMO 708
709	Arabic - ASMO 449+, BCON V4
710	Arabic - Transparent Arabic
720	Arabic - Transparent ASMO
737	OEM - Greek (formerly 437G)
775	OEM - Baltic
850	OEM - Multilingual Latin I
852	OEM - Latin II
855	OEM - Cyrillic (primarily Russian)
857	OEM - Turkish
858	OEM - Multilingual Latin I + Euro symbol
860	OEM - Portuguese
861	OEM - Icelandic
862	OEM - Hebrew
863	OEM - Canadian-French
864	OEM - Arabic
865	OEM - Nordic
866	OEM - Russian
869	OEM - Modern Greek
870	IBM EBCDIC - Multilingual/ROECE (Latin-2)
874	ANSI/OEM - Thai (same as 28605, ISO 8859-15)
875	IBM EBCDIC - Modern Greek
932	ANSI/OEM - Japanese, Shift-JIS
936	ANSI/OEM - Simplified Chinese (PRC, Singapore)
949	ANSI/OEM - Korean (Unified Hangul Code)
950	ANSI/OEM - Traditional Chinese (Taiwan; Hong Kong SAR, PRC)
1026	IBM EBCDIC - Turkish (Latin-5)
1047	IBM EBCDIC - Latin 1/Open System
1140	IBM EBCDIC - U.S./Canada (037 + Euro symbol)
1141	IBM EBCDIC - Germany (20273 + Euro symbol)
1142	IBM EBCDIC - Denmark/Norway (20277 + Euro symbol)
1143	IBM EBCDIC - Finland/Sweden (20278 + Euro symbol)
1144	IBM EBCDIC - Italy (20280 + Euro symbol)
1145	IBM EBCDIC - Latin America/Spain (20284 + Euro symbol)
1146	IBM EBCDIC - United Kingdom (20285 + Euro symbol)
1147	IBM EBCDIC - France (20297 + Euro symbol)
1148	IBM EBCDIC - International (500 + Euro symbol)
1149	IBM EBCDIC - Icelandic (20871 + Euro symbol)
1200	Unicode UCS-2 Little-Endian (BMP of ISO 10646)
1201	Unicode UCS-2 Big-Endian
1250	ANSI - Central European
1251	ANSI - Cyrillic
1252	ANSI - Latin I
1253	ANSI - Greek
1254	ANSI - Turkish
1255	ANSI - Hebrew
1256	ANSI - Arabic
1257	ANSI - Baltic
1258	ANSI/OEM - Vietnamese
1361	Korean (Johab)
10000	MAC - Roman
10001	MAC - Japanese
10002	MAC - Traditional Chinese (Big5)
10003	MAC - Korean
10004	MAC - Arabic
10005	MAC - Hebrew
10006	MAC - Greek I
10007	MAC - Cyrillic
10008	MAC - Simplified Chinese (GB 2312)
10010	MAC - Romania
10017	MAC - Ukraine
10021	MAC - Thai
10029	MAC - Latin II
10079	MAC - Icelandic
10081	MAC - Turkish
10082	MAC - Croatia
12000	Unicode UCS-4 Little-Endian
12001	Unicode UCS-4 Big-Endian
20000	CNS - Taiwan
20001	TCA - Taiwan
20002	Eten - Taiwan
20003	IBM5550 - Taiwan
20004	TeleText - Taiwan
20005	Wang - Taiwan
20105	IA5 IRV International Alphabet No. 5 (7-bit)
20106	IA5 German (7-bit)
20107	IA5 Swedish (7-bit)
20108	IA5 Norwegian (7-bit)
20127	US-ASCII (7-bit)
20261	T.61
20269	ISO 6937 Non-Spacing Accent
20273	IBM EBCDIC - Germany
20277	IBM EBCDIC - Denmark/Norway
20278	IBM EBCDIC - Finland/Sweden
20280	IBM EBCDIC - Italy
20284	IBM EBCDIC - Latin America/Spain
20285	IBM EBCDIC - United Kingdom
20290	IBM EBCDIC - Japanese Katakana Extended
20297	IBM EBCDIC - France
20420	IBM EBCDIC - Arabic
20423	IBM EBCDIC - Greek
20424	IBM EBCDIC - Hebrew
20833	IBM EBCDIC - Korean Extended
20838	IBM EBCDIC - Thai
20866	Russian - KOI8-R
20871	IBM EBCDIC - Icelandic
20880	IBM EBCDIC - Cyrillic (Russian)
20905	IBM EBCDIC - Turkish
20924	IBM EBCDIC - Latin-1/Open System (1047 + Euro symbol)
20932	JIS X 0208-1990 & 0121-1990
20936	Simplified Chinese (GB2312)
21025	IBM EBCDIC - Cyrillic (Serbian, Bulgarian)
21027	Extended Alpha Lowercase
21866	Ukrainian (KOI8-U)
28591	ISO 8859-1 Latin I
28592	ISO 8859-2 Central Europe
28593	ISO 8859-3 Latin 3
28594	ISO 8859-4 Baltic
28595	ISO 8859-5 Cyrillic
28596	ISO 8859-6 Arabic
28597	ISO 8859-7 Greek
28598	ISO 8859-8 Hebrew
28599	ISO 8859-9 Latin 5
28605	ISO 8859-15 Latin 9
29001	Europa 3
38598	ISO 8859-8 Hebrew
50220	ISO 2022 Japanese with no halfwidth Katakana
50221	ISO 2022 Japanese with halfwidth Katakana
50222	ISO 2022 Japanese JIS X 0201-1989
50225	ISO 2022 Korean
50227	ISO 2022 Simplified Chinese
50229	ISO 2022 Traditional Chinese
50930	Japanese (Katakana) Extended
50931	US/Canada and Japanese
50933	Korean Extended and Korean
50935	Simplified Chinese Extended and Simplified Chinese
50936	Simplified Chinese
50937	US/Canada and Traditional Chinese
50939	Japanese (Latin) Extended and Japanese
51932	EUC - Japanese
51936	EUC - Simplified Chinese
51949	EUC - Korean
51950	EUC - Traditional Chinese
52936	HZ-GB2312 Simplified Chinese
54936	Windows XP: GB18030 Simplified Chinese (4 Byte)
57002	ISCII Devanagari
57003	ISCII Bengali
57004	ISCII Tamil
57005	ISCII Telugu
57006	ISCII Assamese
57007	ISCII Oriya
57008	ISCII Kannada
57009	ISCII Malayalam
57010	ISCII Gujarati
57011	ISCII Punjabi
65000	Unicode UTF-7
65001	Unicode UTF-8

The following is a list of valid code page identifiers for Mac OS only:


Identifier	Name
1	ASCII
2	NEXTSTEP
3	JapaneseEUC
4	UTF8
5	ISOLatin1
6	Symbol
7	NonLossyASCII
8	ShiftJIS
9	ISOLatin2
10	Unicode
11	WindowsCP1251
12	WindowsCP1252
13	WindowsCP1253
14	WindowsCP1254
15	WindowsCP1250
21	ISO2022JP
30	MacOSRoman
10	UTF16String
0x90000100	UTF16BigEndian
0x94000100	UTF16LittleEndian
0x8c000100	UTF32String
0x98000100	UTF32BigEndian
0x9c000100	UTF32LittleEndian
65536	Proprietary

LicenseInfo: Information about the current license.

When queried, this setting will return a string containing information about the license this instance of a class is using. It will return the following information:

Product: The product the license is for.
Product Key: The key the license was generated from.
License Source: Where the license was found (e.g., RuntimeLicense, License File).
License Type: The type of license installed (e.g., Royalty Free, Single Server).
Last Valid Build: The last valid build number for which the license will work.

MaskSensitive: 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 False.

This setting only works on these classes: AS3Receiver, AS3Sender, Atom, Client(3DS), FTP, FTPServer, IMAP, OFTPClient, SSHClient, SCP, Server(3DS), Sexec, SFTP, SFTPServer, SSHServer, TCPClient, TCPServer.

ProcessIdleEvents: Whether the class uses its internal event loop to process events when the main thread is idle.

If set to False, the class will not fire internal idle events. Set this to False to use the class in a background thread on Mac OS. By default, this setting is True.

SelectWaitMillis: The length of time in milliseconds the class will wait when DoEvents is called if there are no events to process.

If there are no events to process when do_events is called, the class will wait for the amount of time specified here before returning. The default value is 20.

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

When set to True, the class will utilize the underlying operating system's certified APIs. Java editions, regardless of OS, utilize Bouncy Castle FIPS, while all the 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 which applies to all instances of all classes of the toolkit within the process. It is recommended to enable or disable this setting once before the component has been used to establish a connection. Enabling FIPS while an instance of the component is active and connected may result in unexpected behavior.

For more details please see the FIPS 140-2 Compliance article.

Note: This setting is only applicable on Windows.

Note: Enabling FIPS-compliance requires a special license; please contact sales@nsoftware.com for details.

UseInternalSecurityAPI: Tells the class whether or not to use the system security libraries or an internal implementation.

When set to False, the class will use the system security libraries by default to perform cryptographic functions where applicable.

Setting this setting to True tells the class to use the internal implementation instead of using the system security libraries.

On Windows, this setting is set to False by default. On Linux/macOS, this setting is set to True by default.

To use the system security libraries for Linux, OpenSSL support must be enabled. For more information on how to enable OpenSSL, please refer to the OpenSSL Notes section.

OFTPServer Errors

671   OFTP protocol error.
672   ServerSSID must be set before Listening is set to true.
673   ServerSFID must be set before Listening is set to true.
675   Session terminated by client. Unknown SSID.
675   Session terminated by client. Unknown SFID.
677   Session terminated by client. Unknown Password.
678   Error building packet to send.
679   Error reading file specified.
680   Invalid date timestamp.
681   Local file exists and overwrite is set to false.
682   Invalid hash value.
683   Invalid signature.
684   Cryptographic operation failed.
685   No encryption certificate was specified.
686   No signing certificate was specified.
687   Send failed. Check the description for more details.
688   The requested feature is only supported in OFTP Version 2.0. Check the description for more details.
689   A required certificate was not provided. The error descriptions indicates which property must be set.
690   Invalid Certificate.
691   Failed to import trusted certificates.

TCPServer Errors

100   You cannot change the remote_port at this time. A connection is in progress.
101   You cannot change the remote_host at this time. A connection is in progress.
102   The remote_host address is invalid (0.0.0.0).
104   TCPServer is already listening.
106   Cannot change local_port when TCPServer is listening.
107   Cannot change local_host when TCPServer is listening.
108   Cannot change MaxConnections when TCPServer is listening.
112   You cannot change MaxLineLength at this time. A connection is in progress.
116   remote_port cannot be zero. Please specify a valid service port number.
126   Invalid ConnectionId.
135   Operation would block.

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 non-socket.
10039   [10039] Destination address required.
10040   [10040] Message too long.
10041   [10041] Protocol wrong type for socket.
10042   [10042] Bad protocol option.
10043   [10043] Protocol not supported.
10044   [10044] Socket type not supported.
10045   [10045] Operation not supported on socket.
10046   [10046] Protocol family not supported.
10047   [10047] Address family not supported by protocol family.
10048   [10048] Address already in use.
10049   [10049] Can't 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] Can't send after socket shutdown.
10059   [10059] Too many references, can't splice.
10060   [10060] Connection timed out.
10061   [10061] Connection refused.
10062   [10062] Too many levels of symbolic links.
10063   [10063] File name too long.
10064   [10064] Host is down.
10065   [10065] No route to host.
10066   [10066] Directory 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 not loaded yet.
11001   [11001] Host not found.
11002   [11002] Non-authoritative 'Host not found' (try again or check DNS setup).
11003   [11003] Non-recoverable errors: FORMERR, REFUSED, NOTIMP.
11004   [11004] Valid name, no data record (check DNS setup).


	671 OFTP protocol error.
	672 ServerSSID must be set before Listening is set to true.
	673 ServerSFID must be set before Listening is set to true.
	675 Session terminated by client. Unknown SSID.
	675 Session terminated by client. Unknown SFID.
	677 Session terminated by client. Unknown Password.
	678 Error building packet to send.
	679 Error reading file specified.
	680 Invalid date timestamp.
	681 Local file exists and overwrite is set to false.
	682 Invalid hash value.
	683 Invalid signature.
	684 Cryptographic operation failed.
	685 No encryption certificate was specified.
	686 No signing certificate was specified.
	687 Send failed. Check the description for more details.
	688 The requested feature is only supported in OFTP Version 2.0. Check the description for more details.
	689 A required certificate was not provided. The error descriptions indicates which property must be set.
	690 Invalid Certificate.
	691 Failed to import trusted certificates.


	100 You cannot change the remote_port at this time. A connection is in progress.
	101 You cannot change the remote_host at this time. A connection is in progress.
	102 The remote_host address is invalid (0.0.0.0).
	104 TCPServer is already listening.
	106 Cannot change local_port when TCPServer is listening.
	107 Cannot change local_host when TCPServer is listening.
	108 Cannot change MaxConnections when TCPServer is listening.
	112 You cannot change MaxLineLength at this time. A connection is in progress.
	116 remote_port cannot be zero. Please specify a valid service port number.
	126 Invalid ConnectionId.
	135 Operation would block.


	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 non-socket.
	10039 [10039] Destination address required.
	10040 [10040] Message too long.
	10041 [10041] Protocol wrong type for socket.
	10042 [10042] Bad protocol option.
	10043 [10043] Protocol not supported.
	10044 [10044] Socket type not supported.
	10045 [10045] Operation not supported on socket.
	10046 [10046] Protocol family not supported.
	10047 [10047] Address family not supported by protocol family.
	10048 [10048] Address already in use.
	10049 [10049] Can't 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] Can't send after socket shutdown.
	10059 [10059] Too many references, can't splice.
	10060 [10060] Connection timed out.
	10061 [10061] Connection refused.
	10062 [10062] Too many levels of symbolic links.
	10063 [10063] File name too long.
	10064 [10064] Host is down.
	10065 [10065] No route to host.
	10066 [10066] Directory 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 not loaded yet.
	11001 [11001] Host not found.
	11002 [11002] Non-authoritative 'Host not found' (try again or check DNS setup).
	11003 [11003] Non-recoverable errors: FORMERR, REFUSED, NOTIMP.
	11004 [11004] Valid name, no data record (check DNS setup).