# SMPP Class

The SMPP Class implements a lightweight message transmission interface using the Short Message Peer-to-Peer protocol, most known for its use in cellular text messaging.

## Syntax

```text
class ipworks.SMPP
```

## Remarks

The SMPP class supports both plaintext and Secure Sockets Layer/Transport Layer Security (SSL/TLS) connections. When connecting over Secure Sockets Layer/Transport Layer Security (SSL/TLS) the [on_ssl_server_authentication](#on_ssl_server_authentication-event) event allows you to check the server identity and other security attributes. The [on_ssl_status](#on_ssl_status-event) event provides information about the SSL handshake. Additional SSL-related settings are also supported through the [config](#config-method) method.

 The Smpp Class will bind as a transceiver, and thus it can send and receive messages from the server. Additionally, it can send single and multirecipient messages and also can upload data.

Using Smpp is quite easy. First, simply set the [smpp_server](#smpp_server-property), [smpp_port](#smpp_port-property), and, if needed, the [smpp_version](#smpp_version-property) properties. Second, a single call to the [connect](#connect-method) method with a specified user Id and password will connect the class.

Transmitting messages is just as easy. You can manipulate the recipients properties directly, or just use [add_recipient](#add_recipient-method) method to add recipients one at a time to the recipient list. After all recipients have been added, a single call to the [send_message](#send_message-method) method will transmit the specified message. If the send is successful, the method will set and return the value of the [message_id](#message_id-property) property. Otherwise, an [on_error](#on_error-event) event will fire for each unsuccessful message destination.

The Smpp Class supports message and data transmission, as well as auxiliary operations, such as [check_message_status](#check_message_status-method) and [replace_message](#replace_message-method). All nonimplemented features of the protocol are supported through the [send_command](#send_command-method) method and [on_pi_trail](#on_pi_trail-event) event. Because of the nature of the protocol, all methods and operations are implemented synchronously.

## Property List

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

|  |  |
| --- | --- |
| [connected](#connected-property) | This property indicates whether the class is connected. |
| [firewall_auto_detect](#firewall_auto_detect-property) | Whether to automatically detect and use firewall system settings, if available. |
| [firewall_host](#firewall_host-property) | The name or IP address of the firewall (optional). |
| [firewall_password](#firewall_password-property) | A password if authentication is to be used when connecting through the firewall. |
| [firewall_port](#firewall_port-property) | The Transmission Control Protocol (TCP) port for the firewall Host . |
| [firewall_type](#firewall_type-property) | The type of firewall to connect through. |
| [firewall_user](#firewall_user-property) | A username if authentication is to be used when connecting through a firewall. |
| [idle](#idle-property) | The current status of the class. |
| [local_host](#local_host-property) | The name of the local host or user-assigned IP interface through which connections are initiated or accepted. |
| [message_expiration](#message_expiration-property) | This property denotes the validity period of the current message. |
| [message_id](#message_id-property) | This property indicates the identifier of the most recently sent message. |
| [message_priority](#message_priority-property) | This property indicates the priority level of the current message. |
| [password](#password-property) | This property contains the user's password. |
| [protocol](#protocol-property) | This property defines the SMPP protocol to be used. |
| [recipient_count](#recipient_count-property) | The number of records in the Recipient arrays. |
| [recipient_address](#recipient_address-property) | This property contains the email address of a particular recipient. |
| [recipient_type](#recipient_type-property) | This property contains the type of a particular recipient. |
| [scheduled_delivery](#scheduled_delivery-property) | This property tells the server when to deliver the current message. |
| [sender_address](#sender_address-property) | This property contains the address of the External Short Messaging Entity (ESME). |
| [service_type](#service_type-property) | This property indicates the type of service for the current message. |
| [smpp_port](#smpp_port-property) | This property contains the server port for secure SMPP (default 2775). |
| [smpp_server](#smpp_server-property) | This property is the SMPP entity to which the class will connect. |
| [smpp_version](#smpp_version-property) | This property indicates the SMPP version to be used throughout the connection. |
| [ssl_accept_server_cert_effective_date](#ssl_accept_server_cert_effective_date-property) | The date on which this certificate becomes valid. |
| [ssl_accept_server_cert_encoded](#ssl_accept_server_cert_encoded-property) | The certificate (PEM/Base64 encoded). |
| [ssl_accept_server_cert_expiration_date](#ssl_accept_server_cert_expiration_date-property) | The date on which the certificate expires. |
| [ssl_accept_server_cert_extended_key_usage](#ssl_accept_server_cert_extended_key_usage-property) | A comma-delimited list of extended key usage identifiers. |
| [ssl_accept_server_cert_fingerprint](#ssl_accept_server_cert_fingerprint-property) | The hex-encoded, 16-byte MD5 fingerprint of the certificate. |
| [ssl_accept_server_cert_fingerprint_sha1](#ssl_accept_server_cert_fingerprint_sha1-property) | The hex-encoded, 20-byte SHA-1 fingerprint of the certificate. |
| [ssl_accept_server_cert_fingerprint_sha256](#ssl_accept_server_cert_fingerprint_sha256-property) | The hex-encoded, 32-byte SHA-256 fingerprint of the certificate. |
| [ssl_accept_server_cert_issuer](#ssl_accept_server_cert_issuer-property) | The issuer of the certificate. |
| [ssl_accept_server_cert_private_key](#ssl_accept_server_cert_private_key-property) | The private key of the certificate (if available). |
| [ssl_accept_server_cert_private_key_available](#ssl_accept_server_cert_private_key_available-property) | Whether a PrivateKey is available for the selected certificate. |
| [ssl_accept_server_cert_private_key_container](#ssl_accept_server_cert_private_key_container-property) | The name of the PrivateKey container for the certificate (if available). |
| [ssl_accept_server_cert_public_key](#ssl_accept_server_cert_public_key-property) | The public key of the certificate. |
| [ssl_accept_server_cert_public_key_algorithm](#ssl_accept_server_cert_public_key_algorithm-property) | The textual description of the certificate's public key algorithm. |
| [ssl_accept_server_cert_public_key_length](#ssl_accept_server_cert_public_key_length-property) | The length of the certificate's public key (in bits). |
| [ssl_accept_server_cert_serial_number](#ssl_accept_server_cert_serial_number-property) | The serial number of the certificate encoded as a string. |
| [ssl_accept_server_cert_signature_algorithm](#ssl_accept_server_cert_signature_algorithm-property) | The text description of the certificate's signature algorithm. |
| [ssl_accept_server_cert_store](#ssl_accept_server_cert_store-property) | The name of the certificate store for the client certificate. |
| [ssl_accept_server_cert_store_password](#ssl_accept_server_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. |
| [ssl_accept_server_cert_store_type](#ssl_accept_server_cert_store_type-property) | The type of certificate store for this certificate. |
| [ssl_accept_server_cert_subject](#ssl_accept_server_cert_subject-property) | The subject of the certificate used for client authentication. |
| [ssl_accept_server_cert_subject_alt_names](#ssl_accept_server_cert_subject_alt_names-property) | Comma-separated lists of alternative subject names for the certificate. |
| [ssl_accept_server_cert_thumbprint_md5](#ssl_accept_server_cert_thumbprint_md5-property) | The MD5 hash of the certificate. |
| [ssl_accept_server_cert_thumbprint_sha1](#ssl_accept_server_cert_thumbprint_sha1-property) | The SHA-1 hash of the certificate. |
| [ssl_accept_server_cert_thumbprint_sha256](#ssl_accept_server_cert_thumbprint_sha256-property) | The SHA-256 hash of the certificate. |
| [ssl_accept_server_cert_usage](#ssl_accept_server_cert_usage-property) | The text description of UsageFlags . |
| [ssl_accept_server_cert_usage_flags](#ssl_accept_server_cert_usage_flags-property) | The flags that show intended use for the certificate. |
| [ssl_accept_server_cert_version](#ssl_accept_server_cert_version-property) | The certificate's version number. |
| [ssl_cert_effective_date](#ssl_cert_effective_date-property) | The date on which this certificate becomes valid. |
| [ssl_cert_encoded](#ssl_cert_encoded-property) | The certificate (PEM/Base64 encoded). |
| [ssl_cert_expiration_date](#ssl_cert_expiration_date-property) | The date on which the certificate expires. |
| [ssl_cert_extended_key_usage](#ssl_cert_extended_key_usage-property) | A comma-delimited list of extended key usage identifiers. |
| [ssl_cert_fingerprint](#ssl_cert_fingerprint-property) | The hex-encoded, 16-byte MD5 fingerprint of the certificate. |
| [ssl_cert_fingerprint_sha1](#ssl_cert_fingerprint_sha1-property) | The hex-encoded, 20-byte SHA-1 fingerprint of the certificate. |
| [ssl_cert_fingerprint_sha256](#ssl_cert_fingerprint_sha256-property) | The hex-encoded, 32-byte SHA-256 fingerprint of the certificate. |
| [ssl_cert_issuer](#ssl_cert_issuer-property) | The issuer of the certificate. |
| [ssl_cert_private_key](#ssl_cert_private_key-property) | The private key of the certificate (if available). |
| [ssl_cert_private_key_available](#ssl_cert_private_key_available-property) | Whether a PrivateKey is available for the selected certificate. |
| [ssl_cert_private_key_container](#ssl_cert_private_key_container-property) | The name of the PrivateKey container for the certificate (if available). |
| [ssl_cert_public_key](#ssl_cert_public_key-property) | The public key of the certificate. |
| [ssl_cert_public_key_algorithm](#ssl_cert_public_key_algorithm-property) | The textual description of the certificate's public key algorithm. |
| [ssl_cert_public_key_length](#ssl_cert_public_key_length-property) | The length of the certificate's public key (in bits). |
| [ssl_cert_serial_number](#ssl_cert_serial_number-property) | The serial number of the certificate encoded as a string. |
| [ssl_cert_signature_algorithm](#ssl_cert_signature_algorithm-property) | The text description of the certificate's signature algorithm. |
| [ssl_cert_store](#ssl_cert_store-property) | The name of the certificate store for the client certificate. |
| [ssl_cert_store_password](#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. |
| [ssl_cert_store_type](#ssl_cert_store_type-property) | The type of certificate store for this certificate. |
| [ssl_cert_subject](#ssl_cert_subject-property) | The subject of the certificate used for client authentication. |
| [ssl_cert_subject_alt_names](#ssl_cert_subject_alt_names-property) | Comma-separated lists of alternative subject names for the certificate. |
| [ssl_cert_thumbprint_md5](#ssl_cert_thumbprint_md5-property) | The MD5 hash of the certificate. |
| [ssl_cert_thumbprint_sha1](#ssl_cert_thumbprint_sha1-property) | The SHA-1 hash of the certificate. |
| [ssl_cert_thumbprint_sha256](#ssl_cert_thumbprint_sha256-property) | The SHA-256 hash of the certificate. |
| [ssl_cert_usage](#ssl_cert_usage-property) | The text description of UsageFlags . |
| [ssl_cert_usage_flags](#ssl_cert_usage_flags-property) | The flags that show intended use for the certificate. |
| [ssl_cert_version](#ssl_cert_version-property) | The certificate's version number. |
| [ssl_enabled](#ssl_enabled-property) | This property indicates whether Transport Layer Security/Secure Sockets Layer (TLS/SSL) is enabled. |
| [ssl_provider](#ssl_provider-property) | The Secure Sockets Layer/Transport Layer Security (SSL/TLS) implementation to use. |
| [ssl_server_cert_effective_date](#ssl_server_cert_effective_date-property) | The date on which this certificate becomes valid. |
| [ssl_server_cert_encoded](#ssl_server_cert_encoded-property) | The certificate (PEM/Base64 encoded). |
| [ssl_server_cert_expiration_date](#ssl_server_cert_expiration_date-property) | The date on which the certificate expires. |
| [ssl_server_cert_extended_key_usage](#ssl_server_cert_extended_key_usage-property) | A comma-delimited list of extended key usage identifiers. |
| [ssl_server_cert_fingerprint](#ssl_server_cert_fingerprint-property) | The hex-encoded, 16-byte MD5 fingerprint of the certificate. |
| [ssl_server_cert_fingerprint_sha1](#ssl_server_cert_fingerprint_sha1-property) | The hex-encoded, 20-byte SHA-1 fingerprint of the certificate. |
| [ssl_server_cert_fingerprint_sha256](#ssl_server_cert_fingerprint_sha256-property) | The hex-encoded, 32-byte SHA-256 fingerprint of the certificate. |
| [ssl_server_cert_issuer](#ssl_server_cert_issuer-property) | The issuer of the certificate. |
| [ssl_server_cert_private_key](#ssl_server_cert_private_key-property) | The private key of the certificate (if available). |
| [ssl_server_cert_private_key_available](#ssl_server_cert_private_key_available-property) | Whether a PrivateKey is available for the selected certificate. |
| [ssl_server_cert_private_key_container](#ssl_server_cert_private_key_container-property) | The name of the PrivateKey container for the certificate (if available). |
| [ssl_server_cert_public_key](#ssl_server_cert_public_key-property) | The public key of the certificate. |
| [ssl_server_cert_public_key_algorithm](#ssl_server_cert_public_key_algorithm-property) | The textual description of the certificate's public key algorithm. |
| [ssl_server_cert_public_key_length](#ssl_server_cert_public_key_length-property) | The length of the certificate's public key (in bits). |
| [ssl_server_cert_serial_number](#ssl_server_cert_serial_number-property) | The serial number of the certificate encoded as a string. |
| [ssl_server_cert_signature_algorithm](#ssl_server_cert_signature_algorithm-property) | The text description of the certificate's signature algorithm. |
| [ssl_server_cert_store](#ssl_server_cert_store-property) | The name of the certificate store for the client certificate. |
| [ssl_server_cert_store_password](#ssl_server_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. |
| [ssl_server_cert_store_type](#ssl_server_cert_store_type-property) | The type of certificate store for this certificate. |
| [ssl_server_cert_subject](#ssl_server_cert_subject-property) | The subject of the certificate used for client authentication. |
| [ssl_server_cert_subject_alt_names](#ssl_server_cert_subject_alt_names-property) | Comma-separated lists of alternative subject names for the certificate. |
| [ssl_server_cert_thumbprint_md5](#ssl_server_cert_thumbprint_md5-property) | The MD5 hash of the certificate. |
| [ssl_server_cert_thumbprint_sha1](#ssl_server_cert_thumbprint_sha1-property) | The SHA-1 hash of the certificate. |
| [ssl_server_cert_thumbprint_sha256](#ssl_server_cert_thumbprint_sha256-property) | The SHA-256 hash of the certificate. |
| [ssl_server_cert_usage](#ssl_server_cert_usage-property) | The text description of UsageFlags . |
| [ssl_server_cert_usage_flags](#ssl_server_cert_usage_flags-property) | The flags that show intended use for the certificate. |
| [ssl_server_cert_version](#ssl_server_cert_version-property) | The certificate's version number. |
| [ssl_start_mode](#ssl_start_mode-property) | This property determines how the class starts the Secure Sockets Layer (SSL) negotiation. |
| [system_type](#system_type-property) | This property contains a string representing the type of system during a connection. |
| [timeout](#timeout-property) | The timeout for the class. |
| [user_id](#user_id-property) | This property is used for identification with the SMPP service. |

## Method List

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

|  |  |
| --- | --- |
| [add_recipient](#add_recipient-method) | This method will add a recipient of the specified type to the recipient list. |
| [cancel_message](#cancel_message-method) | This method will cancel the specified message. |
| [check_link](#check_link-method) | This method will check the connection to the server. |
| [check_message_status](#check_message_status-method) | This method will retrieve the status of the specified message. |
| [config](#config-method) | Sets or retrieves a configuration setting. |
| [connect](#connect-method) | This method will bind as a transceiver to the SMPP service. |
| [connect_to](#connect_to-method) | This method will bind as a transceiver to the SMPP service. |
| [disconnect](#disconnect-method) | This method will disconnect from the SMPP service. |
| [do_events](#do_events-method) | This method processes events from the internal message queue. |
| [interrupt](#interrupt-method) | This method interrupts the current method. |
| [replace_message](#replace_message-method) | This method replaces a previously sent message with a new one. |
| [reset](#reset-method) | This method will reset the class. |
| [send_command](#send_command-method) | This method will format and send a protocol data unit (PDU) using the specified command identifier and payload. |
| [send_data](#send_data-method) | This method sends raw data to Recipients . |
| [send_message](#send_message-method) | This method sends a message to all recipients in the recipient list. |

## 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_connected](#on_connected-event) | This event is fired after a successful bind operation. |
| [on_connection_status](#on_connection_status-event) | Fired to indicate changes in the connection state. |
| [on_disconnected](#on_disconnected-event) | This event is fired when connection to the SMS service is lost. |
| [on_error](#on_error-event) | This event is fired when the server detects an error. |
| [on_message_in](#on_message_in-event) | This event is fired upon receipt of a message. |
| [on_message_status](#on_message_status-event) | This event is fired upon receipt of a message. |
| [on_pi_trail](#on_pi_trail-event) | This event is fired once for each protocol data unit (PDU) sent between the client and server. |
| [on_ready_to_send](#on_ready_to_send-event) | This event is fired when the class is ready to send data. |
| [on_ssl_server_authentication](#on_ssl_server_authentication-event) | Fired after the server presents its certificate to the client. |
| [on_ssl_status](#on_ssl_status-event) | Fired when secure connection progress messages are available. |

## Config Settings

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

|  |  |
| --- | --- |
| [AddressRange](#AddressRange) | Specifies the addr_range parameter when binding. |
| [BinaryDataCoding](#BinaryDataCoding) | Whether or not to binary encode the message when DataCoding is set. |
| [BindAsReceiver](#BindAsReceiver) | Causes the class to bind as a receiver. |
| [BindAsTransmitter](#BindAsTransmitter) | Causes the class to bind as a transmitter. |
| [CustomTLV](#CustomTLV) | Optional TLV parameters added after the mandatory parameters and before the payload. |
| [DataCoding](#DataCoding) | The data encoding mechanism to be used for the current message. |
| [DecodeHexStrings](#DecodeHexStrings) | Will decode an ascii hex-representation of binary data prior to transmission. |
| [DestinationNPI](#DestinationNPI) | The Number Planning Indicator for the destination ESME. |
| [DestinationTON](#DestinationTON) | The Type of Number for the destination ESME. |
| [DoSplitLargeMessages](#DoSplitLargeMessages) | Splits long messages and returns the UDH and Message Parts. |
| [HexString](#HexString) | A hex-encoded binary string to be sent to the current recipient. |
| [IncomingDestinationAddress](#IncomingDestinationAddress) | Returns the dest_addr field inside the received message. |
| [IntermediateNotification](#IntermediateNotification) | Causes the class to request intermediate notification. |
| [MaxCIMDSMSLength](#MaxCIMDSMSLength) | Indicates the maximum SMS message length for the CIMD protocol. |
| [MaxSMSLength](#MaxSMSLength) | Indicates the maximum SMS message length. |
| [MCReceipt](#MCReceipt) | The Type of MC Delivery Receipt requested. |
| [MessageInReceiptedMessageId](#MessageInReceiptedMessageId) | The receipted_message_id field of an incoming deliver_sm PDU. |
| [MessageMode](#MessageMode) | The Type of Messaging Mode requested. |
| [MessageType](#MessageType) | The Type of Message. |
| [PDUFormat](#PDUFormat) | The format of the PDU. |
| [ProtocolId](#ProtocolId) | The protocol identifier. |
| [ReplaceIfPresent](#ReplaceIfPresent) | Indicates whether the replace_if_present_flag is enabled when sending a message. |
| [SMEAcknowledgement](#SMEAcknowledgement) | The Type of SME originated acknowledgment requested. |
| [SourceNPI](#SourceNPI) | The Number Planning Indicator for the ESME. |
| [SourceTON](#SourceTON) | The Type of Number for the ESME. |
| [SplitLargeMessages](#SplitLargeMessages) | Determines whether large messages are split into multiple parts. |
| [SplitMessageMethod](#SplitMessageMethod) | Determines how large messages are split into multiple parts. |
| [StatusReportRequest](#StatusReportRequest) | Defines in what cases a status report is created by the server. |
| [SubAddr](#SubAddr) | Defines a unique index for application instance. |
| [SynchronousSendCommand](#SynchronousSendCommand) | Controls whether SendCommand behaves synchronously or asynchronously. |
| [SynchronousSendMessage](#SynchronousSendMessage) | Controls whether SendMessage behaves synchronously or asynchronously. |
| [UseGSM7BitEncoding](#UseGSM7BitEncoding) | Whether or not to use GSM 7-bit encoding. |
| [UseGSM7bitEncodingCompression](#UseGSM7bitEncodingCompression) | Whether to compress GSM 7-bit encoded characters. |
| [WaitForBanner](#WaitForBanner) | Specifies the CIMD2 banner the class will wait for when connecting. |
| [ConnectionTimeout](#ConnectionTimeout) | Sets a separate timeout value for establishing a connection. |
| [FirewallAutoDetect](#FirewallAutoDetect) | Tells the class whether or not to automatically detect and use firewall system settings, if available. |
| [FirewallHost](#FirewallHost) | Name or IP address of firewall (optional). |
| [FirewallHTTPVersion](#FirewallHTTPVersion) | The HTTP version to be used when connecting through a tunneling proxy. |
| [FirewallPassword](#FirewallPassword) | Password to be used if authentication is to be used when connecting through the firewall. |
| [FirewallPort](#FirewallPort) | The TCP port for the FirewallHost;. |
| [FirewallType](#FirewallType) | Determines the type of firewall to connect through. |
| [FirewallUser](#FirewallUser) | A user name if authentication is to be used connecting through a firewall. |
| [KeepAliveInterval](#KeepAliveInterval) | The retry interval, in milliseconds, to be used when a TCP keep-alive packet is sent and no response is received. |
| [KeepAliveTime](#KeepAliveTime) | The inactivity time in milliseconds before a TCP keep-alive packet is sent. |
| [Linger](#Linger) | When set to True, connections are terminated gracefully. |
| [LingerTime](#LingerTime) | Time in seconds to have the connection linger. |
| [LocalHost](#LocalHost) | The name of the local host through which connections are initiated or accepted. |
| [LocalPort](#LocalPort) | The port in the local host where the class binds. |
| [MaxLineLength](#MaxLineLength) | The maximum amount of data to accumulate when no EOL is found. |
| [MaxTransferRate](#MaxTransferRate) | The transfer rate limit in bytes per second. |
| [ProxyExceptionsList](#ProxyExceptionsList) | A semicolon separated list of hosts and IPs to bypass when using a proxy. |
| [TCPKeepAlive](#TCPKeepAlive) | Determines whether or not the keep alive socket option is enabled. |
| [TcpNoDelay](#TcpNoDelay) | Whether or not to delay when sending packets. |
| [UseIPv6](#UseIPv6) | Whether to use IPv6. |
| [UseNTLMv2](#UseNTLMv2) | Whether to use NTLM V2. |
| [LogSSLPackets](#LogSSLPackets) | Controls whether SSL packets are logged when using the internal security API. |
| [OpenSSLCADir](#OpenSSLCADir) | The path to a directory containing CA certificates. |
| [OpenSSLCAFile](#OpenSSLCAFile) | Name of the file containing the list of CA's trusted by your application. |
| [OpenSSLCipherList](#OpenSSLCipherList) | A string that controls the ciphers to be used by SSL. |
| [OpenSSLPrngSeedData](#OpenSSLPrngSeedData) | The data to seed the pseudo random number generator (PRNG). |
| [ReuseSSLSession](#ReuseSSLSession) | Determines if the SSL session is reused. |
| [SSLCACertFilePaths](#SSLCACertFilePaths) | The paths to CA certificate files on Unix/Linux. |
| [SSLCACerts](#SSLCACerts) | A newline separated list of CA certificates to be included when performing an SSL handshake. |
| [SSLCheckCRL](#SSLCheckCRL) | Whether to check the Certificate Revocation List for the server certificate. |
| [SSLCheckOCSP](#SSLCheckOCSP) | Whether to use OCSP to check the status of the server certificate. |
| [SSLCipherStrength](#SSLCipherStrength) | The minimum cipher strength used for bulk encryption. |
| [SSLClientCACerts](#SSLClientCACerts) | A newline separated list of CA certificates to use during SSL client certificate validation. |
| [SSLEnabledCipherSuites](#SSLEnabledCipherSuites) | The cipher suite to be used in an SSL negotiation. |
| [SSLEnabledProtocols](#SSLEnabledProtocols) | Used to enable/disable the supported security protocols. |
| [SSLEnableRenegotiation](#SSLEnableRenegotiation) | Whether the renegotiation_info SSL extension is supported. |
| [SSLIncludeCertChain](#SSLIncludeCertChain) | Whether the entire certificate chain is included in the SSLServerAuthentication event. |
| [SSLKeyLogFile](#SSLKeyLogFile) | The location of a file where per-session secrets are written for debugging purposes. |
| [SSLNegotiatedCipher](#SSLNegotiatedCipher) | Returns the negotiated cipher suite. |
| [SSLNegotiatedCipherStrength](#SSLNegotiatedCipherStrength) | Returns the negotiated cipher suite strength. |
| [SSLNegotiatedCipherSuite](#SSLNegotiatedCipherSuite) | Returns the negotiated cipher suite. |
| [SSLNegotiatedKeyExchange](#SSLNegotiatedKeyExchange) | Returns the negotiated key exchange algorithm. |
| [SSLNegotiatedKeyExchangeStrength](#SSLNegotiatedKeyExchangeStrength) | Returns the negotiated key exchange algorithm strength. |
| [SSLNegotiatedVersion](#SSLNegotiatedVersion) | Returns the negotiated protocol version. |
| [SSLSecurityFlags](#SSLSecurityFlags) | Flags that control certificate verification. |
| [SSLServerCACerts](#SSLServerCACerts) | A newline separated list of CA certificates to use during SSL server certificate validation. |
| [TLS12SignatureAlgorithms](#TLS12SignatureAlgorithms) | Defines the allowed TLS 1.2 signature algorithms when SSLProvider is set to Internal. |
| [TLS12SupportedGroups](#TLS12SupportedGroups) | The supported groups for ECC. |
| [TLS13KeyShareGroups](#TLS13KeyShareGroups) | The groups for which to pregenerate key shares. |
| [TLS13SignatureAlgorithms](#TLS13SignatureAlgorithms) | The allowed certificate signature algorithms. |
| [TLS13SupportedGroups](#TLS13SupportedGroups) | The supported groups for (EC)DHE key exchange. |
| [AbsoluteTimeout](#AbsoluteTimeout) | Determines whether timeouts are inactivity timeouts or absolute timeouts. |
| [FirewallData](#FirewallData) | Used to send extra data to the firewall. |
| [InBufferSize](#InBufferSize) | The size in bytes of the incoming queue of the socket. |
| [OutBufferSize](#OutBufferSize) | The size in bytes of the outgoing queue of the socket. |
| [BuildInfo](#BuildInfo) | Information about the product's build. |
| [CodePage](#CodePage) | The system code page used for Unicode to Multibyte translations. |
| [LicenseInfo](#LicenseInfo) | Information about the current license. |
| [MaskSensitiveData](#MaskSensitiveData) | Whether sensitive data is masked in log messages. |
| [ProcessIdleEvents](#ProcessIdleEvents) | Whether the class uses its internal event loop to process events when the main thread is idle. |
| [SelectWaitMillis](#SelectWaitMillis) | The length of time in milliseconds the class will wait when DoEvents is called if there are no events to process. |
| [UseInternalSecurityAPI](#UseInternalSecurityAPI) | Whether or not to use the system security libraries or an internal implementation. |

# connected property

This property indicates whether the class is connected.

## Syntax

```text
def get_connected() -> bool: ...
connected = property(get_connected, None)
```

## Default Value

FALSE

## Remarks

This property indicates whether the class is connected to the remote host. Use the [connect](#connect-method) and [disconnect](#disconnect-method) methods to manage the connection.

This property is read-only.

# firewall_auto_detect property

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

## Syntax

```text
def get_firewall_auto_detect() -> bool: ...
def set_firewall_auto_detect(value: bool) -> None: ...
firewall_auto_detect = property(get_firewall_auto_detect, set_firewall_auto_detect)
```

## Default Value

FALSE

## Remarks

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

# firewall_host property

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

## Syntax

```text
def get_firewall_host() -> str: ...
def set_firewall_host(value: str) -> None: ...
firewall_host = property(get_firewall_host, set_firewall_host)
```

## Default Value

""

## Remarks

The name or IP address of the firewall (optional). If a [firewall_host](#firewall_host-property) is given, the requested connections will be authenticated through the specified firewall when connecting.

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

# firewall_password property

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

## Syntax

```text
def get_firewall_password() -> str: ...
def set_firewall_password(value: str) -> None: ...
firewall_password = property(get_firewall_password, set_firewall_password)
```

## Default Value

""

## Remarks

A password if authentication is to be used when connecting through the firewall. If [firewall_host](#firewall_host-property) is specified, the [firewall_user](#firewall_user-property) and [firewall_password](#firewall_password-property) properties are used to connect and authenticate to the given firewall. If the authentication fails, the class fails with an error.

# firewall_port property

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

## Syntax

```text
def get_firewall_port() -> int: ...
def set_firewall_port(value: int) -> None: ...
firewall_port = property(get_firewall_port, set_firewall_port)
```

## Default Value

0

## Remarks

The Transmission Control Protocol (TCP) port for the firewall [firewall_host](#firewall_host-property). See the description of the [firewall_host](#firewall_host-property) property for details.

NOTE: This property is set automatically when [firewall_type](#SMPP_p_FirewallFirewallType) is set to a valid value. See the description of the [firewall_type](#SMPP_p_FirewallFirewallType) property for details.

# firewall_type property

The type of firewall to connect through.

## Syntax

```text
def get_firewall_type() -> int: ...
def set_firewall_type(value: int) -> None: ...
firewall_type = property(get_firewall_type, set_firewall_type)
```

## Possible Values

```text
0   # None1   # Tunnel2   # SOCKS43   # SOCKS510   # SOCKS4A
```

## Default Value

0

## Remarks

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

|  |  |
| --- | --- |
| fwNone (0) | No firewall (default setting). |
| fwTunnel (1) | Connect through a tunneling proxy. [firewall_port](#firewall_port-property) is set to 80. |
| fwSOCKS4 (2) | Connect through a SOCKS4 Proxy. [firewall_port](#firewall_port-property) is set to 1080. |
| fwSOCKS5 (3) | Connect through a SOCKS5 Proxy. [firewall_port](#firewall_port-property) is set to 1080. |
| fwSOCKS4A (10) | Connect through a SOCKS4A Proxy. [firewall_port](#firewall_port-property) is set to 1080. |

# firewall_user property

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

## Syntax

```text
def get_firewall_user() -> str: ...
def set_firewall_user(value: str) -> None: ...
firewall_user = property(get_firewall_user, set_firewall_user)
```

## Default Value

""

## Remarks

A username if authentication is to be used when connecting through a firewall. If [firewall_host](#firewall_host-property) is specified, this property and the [firewall_password](#firewall_password-property) property are used to connect and authenticate to the given [Firewall](#Type_Firewall). If the authentication fails, the class fails with an error.

# idle property

The current status of the class.

## Syntax

```text
def get_idle() -> bool: ...
idle = property(get_idle, None)
```

## Default Value

TRUE

## Remarks

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

This property is read-only.

# local_host property

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

## Syntax

```text
def get_local_host() -> str: ...
def set_local_host(value: str) -> None: ...
local_host = property(get_local_host, set_local_host)
```

## Default Value

""

## Remarks

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

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

If the class is connected, the 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 multihomed 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.

# message_expiration property

This property denotes the validity period of the current message.

## Syntax

```text
def get_message_expiration() -> str: ...
def set_message_expiration(value: str) -> None: ...
message_expiration = property(get_message_expiration, set_message_expiration)
```

## Default Value

""

## Remarks

This property indicates the Message Center expiration time, after which the message should be discarded if not delivered to the destination. It can be set using absolute or relative time formats.

**Absolute Time Format** is a 16-character string represented as "YYMMDDhhmmsstnnp" where:

|  |  |
| --- | --- |
| YY | the last two digits of the year (00-99) |
| MM | month (01-12) |
| DD | day (01-31) |
| hh | hour (00-23) |
| mm | minute (00-59) |
| ss | second (00-59) |
| t | tenths of a second (0-9) |
| nn | quarter-hour time difference between local time and UTC time (00-48) |
| p | "+" or "-" indicating the direction of the time offset in nn |

**Relative Time Format** is the same 16-character string where "p" should be set to "R" for "relative". For relative time, "tnn" are ignored and thus should be set to a constant value of "000".

# message_id property

This property indicates the identifier of the most recently sent message.

## Syntax

```text
def get_message_id() -> str: ...
message_id = property(get_message_id, None)
```

## Default Value

""

## Remarks

This property indicates the identifier of the most recently sent message. After a successful call to [send_message](#send_message-method), this property will be set to the server-assigned Id for that message.

This property is read-only.

# message_priority property

This property indicates the priority level of the current message.

## Syntax

```text
def get_message_priority() -> int: ...
def set_message_priority(value: int) -> None: ...
message_priority = property(get_message_priority, set_message_priority)
```

## Possible Values

```text
0   # MessagePriorityLow1   # MessagePriorityNormal2   # MessagePriorityHigh3   # MessagePriorityUrgent
```

## Default Value

1

## Remarks

When sending a message, this property will tell the server what type of priority to assign to the message. The effect of the message priority setting depends on the Message Center (MC) manufacturer and the network on which the target recipient lies. For example, some MCs may immediately forward "urgent" messages, some networks may use the priority setting as a visual indicator of the message's urgency (e.g., blinking icons), and some networks may entirely ignore the priority setting.

# password property

This property contains the user's password.

## Syntax

```text
def get_password() -> str: ...
def set_password(value: str) -> None: ...
password = property(get_password, set_password)
```

## Default Value

""

## Remarks

This property contains the user's password. When binding to the [smpp_server](#smpp_server-property), the client must provide a known user identifier and a valid password for that Id.

The two ways to bind are (1) by calling [connect](#connect-method) with a user identifier and password, which will set the [user_id](#user_id-property) and this property before connecting; or (2) by setting those two properties and calling [send_message](#send_message-method) while not connected.

# protocol property

This property defines the SMPP protocol to be used.

## Syntax

```text
def get_protocol() -> int: ...
def set_protocol(value: int) -> None: ...
protocol = property(get_protocol, set_protocol)
```

## Possible Values

```text
0   # SMPP1   # CIMD2
```

## Default Value

0

## Remarks

This property defines the protocol to be used when connecting to the server. Possible values are as follows:

|  |  |
| --- | --- |
| 0 (smppSMPP - default) | SMPP for traditional SMPP servers |
| 1 (smppCIMD2) | CIMD2 for Nokia Short Message Service Center servers |

# recipient_count property

The number of records in the Recipient arrays.

## Syntax

```text
def get_recipient_count() -> int: ...
def set_recipient_count(value: int) -> None: ...
recipient_count = property(get_recipient_count, set_recipient_count)
```

## Default Value

0

## Remarks

This property controls the size of the following arrays:

- [recipient_address](#recipient_address-property)
- [recipient_type](#recipient_type-property)

The array indices start at *0* and end at *recipient_count - 1*.

# recipient_address property

This property contains the email address of a particular recipient.

## Syntax

```text
def get_recipient_address(recipient_index: int) -> str: ...
def set_recipient_address(recipient_index: int, value: str) -> None: ...
```

## Default Value

""

## Remarks

This property contains the email address of a particular recipient. This can be used to set single or multiple recipients. The [recipient_type](#SMPP_p_RecipientRecipientType) contains the corresponding type.

For a recipient type of normal, the value in the [recipient_address](#recipient_address-property) should be either the dotted IPv4 of an SMS-enabled device or the directory number of a target mobile phone. For distributed lists, the value should be the name of the list as it is stored on the [smpp_server](#smpp_server-property).

The *recipient_index* parameter specifies the index of the item in the array. The size of the array is controlled by the [recipient_count](#recipient_count-property) property.

# recipient_type property

This property contains the type of a particular recipient.

## Syntax

```text
def get_recipient_type(recipient_index: int) -> int: ...
def set_recipient_type(recipient_index: int, value: int) -> None: ...
```

## Possible Values

```text
0   # RecipientTypeNormal1   # RecipientTypeList
```

## Default Value

0

## Remarks

This property contains the type of a particular recipient. This property is used only for multiple recipient messages. The [recipient_address](#recipient_address-property) contains the corresponding recipient's address.

For a recipient type of normal, the value in [recipient_address](#recipient_address-property) should be either the dotted IPv4 of an SMS-enabled device or the directory number of a target mobile phone. For distributed lists, the value should be the name of the list as it is stored on the [smpp_server](#smpp_server-property).

Valid values for RecipientType are as follows:

|  |  |
| --- | --- |
| 0 (smppRecipientTypeNormal) | Normal SME (Short Message Entity) Address |
| 1 (smppRecipientTypeList) | Distribution List |

The *recipient_index* parameter specifies the index of the item in the array. The size of the array is controlled by the [recipient_count](#recipient_count-property) property.

# scheduled_delivery property

This property tells the server when to deliver the current message.

## Syntax

```text
def get_scheduled_delivery() -> str: ...
def set_scheduled_delivery(value: str) -> None: ...
scheduled_delivery = property(get_scheduled_delivery, set_scheduled_delivery)
```

## Default Value

""

## Remarks

This property is used by the class when sending a message to inform the Message Center to forward the message to the intended recipients at a specific time. It can be set using absolute or relative time formats.

**Absolute Time Format** is a 16-character string represented as "YYMMDDhhmmsstnnp" where:

|  |  |
| --- | --- |
| YY | the last two digits of the year (00-99) |
| MM | month (01-12) |
| DD | day (01-31) |
| hh | hour (00-23) |
| mm | minute (00-59) |
| ss | second (00-59) |
| t | tenths of a second (0-9) |
| nn | quarter-hour time difference between local time and UTC time (00-48) |
| p | "+" or "-" indicating the direction of the time offset in nn |

**Relative Time Format** is the same 16-character string where "p" should be set to "R" for "relative". For relative time, "tnn" are ignored and thus should be set to a constant value of "000".

# sender_address property

This property contains the address of the External Short Messaging Entity (ESME).

## Syntax

```text
def get_sender_address() -> str: ...
def set_sender_address(value: str) -> None: ...
sender_address = property(get_sender_address, set_sender_address)
```

## Default Value

""

## Remarks

This property contains the address of the External Short Messaging Entity (ESME). The SMPP protocol allows an ESME to specify its address, whether it is a phone number or an IP address. If this property is not set, the class will default to the value in [local_host](#local_host-property).

# service_type property

This property indicates the type of service for the current message.

## Syntax

```text
def get_service_type() -> int: ...
def set_service_type(value: int) -> None: ...
service_type = property(get_service_type, set_service_type)
```

## Possible Values

```text
0   # ServiceDefault1   # ServiceCMT2   # ServiceCPT3   # ServiceVMN4   # ServiceVMA5   # ServiceWAP6   # ServiceUSSD7   # ServiceCBS
```

## Default Value

0

## Remarks

When sending messages, this property is used to define the SMS application service to be associated with the message. The Message Center (MC) will use the value to determine the availability of enhanced messaging services and to control the teleservice used on the air interface.

The values are defined in the SMPP 5.0 specification as follows:

|  |  |
| --- | --- |
| "" (NULL) | MC Default |
| CMT | Cellular Messaging |
| CPT | Cellular Paging |
| VMN | Voice Mail Notification |
| VMA | Voice Mail Alerting |
| WAP | Wireless Application Protocol |
| USSD | Unstructured Supplementary Services Data |
| CBS | Cell Broadcast Service |

# smpp_port property

This property contains the server port for secure SMPP (default 2775).

## Syntax

```text
def get_smpp_port() -> int: ...
def set_smpp_port(value: int) -> None: ...
smpp_port = property(get_smpp_port, set_smpp_port)
```

## Default Value

2775

## Remarks

For an implicit Secure Sockets Layer (SSL), use port 3551 (please refer to the [ssl_start_mode](#ssl_start_mode-property) property for more information).

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

# smpp_server property

This property is the SMPP entity to which the class will connect.

## Syntax

```text
def get_smpp_server() -> str: ...
def set_smpp_server(value: str) -> None: ...
smpp_server = property(get_smpp_server, set_smpp_server)
```

## Default Value

""

## Remarks

This property is the instant messaging server to which the class will connect when the [connect](#connect-method) method is called. This property must contain a valid SMPP service application address.

# smpp_version property

This property indicates the SMPP version to be used throughout the connection.

## Syntax

```text
def get_smpp_version() -> int: ...
def set_smpp_version(value: int) -> None: ...
smpp_version = property(get_smpp_version, set_smpp_version)
```

## Possible Values

```text
0   # Version501   # Version342   # Version33
```

## Default Value

1

## Remarks

This property contains the SMPP version to be used throughout the connection.

The default value is version 3.4 because it is the most widely used version of the protocol.

Choosing the highest mutually supported version is generally recommended. Version 3.4 is the default value; however, if version 5.0 is supported, it is recommended.

# ssl_accept_server_cert_effective_date property

The date on which this certificate becomes valid.

## Syntax

```text
def get_ssl_accept_server_cert_effective_date() -> str: ...
ssl_accept_server_cert_effective_date = property(get_ssl_accept_server_cert_effective_date, None)
```

## Default Value

""

## Remarks

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

23-Jan-2000 15:00:00.

This property is read-only.

# ssl_accept_server_cert_encoded property

The certificate (PEM/Base64 encoded).

## Syntax

```text
def get_ssl_accept_server_cert_encoded() -> bytes: ...
def set_ssl_accept_server_cert_encoded(value: bytes) -> None: ...
ssl_accept_server_cert_encoded = property(get_ssl_accept_server_cert_encoded, set_ssl_accept_server_cert_encoded)
```

## Default Value

""

## Remarks

The certificate (PEM/Base64 encoded). This property is used to assign a specific certificate. The [ssl_accept_server_cert_store](#ssl_accept_server_cert_store-property) and [ssl_accept_server_cert_subject](#ssl_accept_server_cert_subject-property) properties also may be used to specify a certificate.

When [ssl_accept_server_cert_encoded](#ssl_accept_server_cert_encoded-property) is set, a search is initiated in the current [ssl_accept_server_cert_store](#ssl_accept_server_cert_store-property) for the private key of the certificate. If the key is found, [ssl_accept_server_cert_subject](#ssl_accept_server_cert_subject-property) is updated to reflect the full subject of the selected certificate; otherwise, [ssl_accept_server_cert_subject](#ssl_accept_server_cert_subject-property) is set to an empty string.

# ssl_accept_server_cert_expiration_date property

The date on which the certificate expires.

## Syntax

```text
def get_ssl_accept_server_cert_expiration_date() -> str: ...
ssl_accept_server_cert_expiration_date = property(get_ssl_accept_server_cert_expiration_date, None)
```

## Default Value

""

## Remarks

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

23-Jan-2001 15:00:00.

This property is read-only.

# ssl_accept_server_cert_extended_key_usage property

A comma-delimited list of extended key usage identifiers.

## Syntax

```text
def get_ssl_accept_server_cert_extended_key_usage() -> str: ...
ssl_accept_server_cert_extended_key_usage = property(get_ssl_accept_server_cert_extended_key_usage, None)
```

## Default Value

""

## Remarks

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

This property is read-only.

# ssl_accept_server_cert_fingerprint property

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

## Syntax

```text
def get_ssl_accept_server_cert_fingerprint() -> str: ...
ssl_accept_server_cert_fingerprint = property(get_ssl_accept_server_cert_fingerprint, None)
```

## Default Value

""

## Remarks

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

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

This property is read-only.

# ssl_accept_server_cert_fingerprint_sha1 property

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

## Syntax

```text
def get_ssl_accept_server_cert_fingerprint_sha1() -> str: ...
ssl_accept_server_cert_fingerprint_sha1 = property(get_ssl_accept_server_cert_fingerprint_sha1, None)
```

## Default Value

""

## Remarks

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

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

This property is read-only.

# ssl_accept_server_cert_fingerprint_sha256 property

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

## Syntax

```text
def get_ssl_accept_server_cert_fingerprint_sha256() -> str: ...
ssl_accept_server_cert_fingerprint_sha256 = property(get_ssl_accept_server_cert_fingerprint_sha256, None)
```

## Default Value

""

## Remarks

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

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

This property is read-only.

# ssl_accept_server_cert_issuer property

The issuer of the certificate.

## Syntax

```text
def get_ssl_accept_server_cert_issuer() -> str: ...
ssl_accept_server_cert_issuer = property(get_ssl_accept_server_cert_issuer, None)
```

## Default Value

""

## Remarks

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

This property is read-only.

# ssl_accept_server_cert_private_key property

The private key of the certificate (if available).

## Syntax

```text
def get_ssl_accept_server_cert_private_key() -> str: ...
ssl_accept_server_cert_private_key = property(get_ssl_accept_server_cert_private_key, None)
```

## Default Value

""

## Remarks

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

NOTE: The [ssl_accept_server_cert_private_key](#ssl_accept_server_cert_private_key-property) may be available but not exportable. In this case, [ssl_accept_server_cert_private_key](#ssl_accept_server_cert_private_key-property) returns an empty string.

This property is read-only.

# ssl_accept_server_cert_private_key_available property

Whether a PrivateKey is available for the selected certificate.

## Syntax

```text
def get_ssl_accept_server_cert_private_key_available() -> bool: ...
ssl_accept_server_cert_private_key_available = property(get_ssl_accept_server_cert_private_key_available, None)
```

## Default Value

FALSE

## Remarks

Whether a [ssl_accept_server_cert_private_key](#ssl_accept_server_cert_private_key-property) is available for the selected certificate. If [ssl_accept_server_cert_private_key_available](#ssl_accept_server_cert_private_key_available-property) is True, the certificate may be used for authentication purposes (e.g., server authentication).

This property is read-only.

# ssl_accept_server_cert_private_key_container property

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

## Syntax

```text
def get_ssl_accept_server_cert_private_key_container() -> str: ...
ssl_accept_server_cert_private_key_container = property(get_ssl_accept_server_cert_private_key_container, None)
```

## Default Value

""

## Remarks

The name of the [ssl_accept_server_cert_private_key](#ssl_accept_server_cert_private_key-property) container for the certificate (if available). This functionality is available only on Windows platforms.

This property is read-only.

# ssl_accept_server_cert_public_key property

The public key of the certificate.

## Syntax

```text
def get_ssl_accept_server_cert_public_key() -> str: ...
ssl_accept_server_cert_public_key = property(get_ssl_accept_server_cert_public_key, None)
```

## Default Value

""

## Remarks

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

This property is read-only.

# ssl_accept_server_cert_public_key_algorithm property

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

## Syntax

```text
def get_ssl_accept_server_cert_public_key_algorithm() -> str: ...
ssl_accept_server_cert_public_key_algorithm = property(get_ssl_accept_server_cert_public_key_algorithm, None)
```

## Default Value

""

## Remarks

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

This property is read-only.

# ssl_accept_server_cert_public_key_length property

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

## Syntax

```text
def get_ssl_accept_server_cert_public_key_length() -> int: ...
ssl_accept_server_cert_public_key_length = property(get_ssl_accept_server_cert_public_key_length, None)
```

## Default Value

0

## Remarks

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

This property is read-only.

# ssl_accept_server_cert_serial_number property

The serial number of the certificate encoded as a string.

## Syntax

```text
def get_ssl_accept_server_cert_serial_number() -> str: ...
ssl_accept_server_cert_serial_number = property(get_ssl_accept_server_cert_serial_number, None)
```

## Default Value

""

## Remarks

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

This property is read-only.

# ssl_accept_server_cert_signature_algorithm property

The text description of the certificate's signature algorithm.

## Syntax

```text
def get_ssl_accept_server_cert_signature_algorithm() -> str: ...
ssl_accept_server_cert_signature_algorithm = property(get_ssl_accept_server_cert_signature_algorithm, None)
```

## Default Value

""

## Remarks

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

This property is read-only.

# ssl_accept_server_cert_store property

The name of the certificate store for the client certificate.

## Syntax

```text
def get_ssl_accept_server_cert_store() -> bytes: ...
def set_ssl_accept_server_cert_store(value: bytes) -> None: ...
ssl_accept_server_cert_store = property(get_ssl_accept_server_cert_store, set_ssl_accept_server_cert_store)
```

## Default Value

"MY"

## Remarks

The name of the certificate store for the client certificate.

The [ssl_accept_server_cert_store_type](#ssl_accept_server_cert_store_type-property) property denotes the type of the certificate store specified by [ssl_accept_server_cert_store](#ssl_accept_server_cert_store-property). If the store is password-protected, specify the password in [ssl_accept_server_cert_store_password](#ssl_accept_server_cert_store_password-property).

[ssl_accept_server_cert_store](#ssl_accept_server_cert_store-property) is used in conjunction with the [ssl_accept_server_cert_subject](#ssl_accept_server_cert_subject-property) property to specify client certificates. If [ssl_accept_server_cert_store](#ssl_accept_server_cert_store-property) has a value, and [ssl_accept_server_cert_subject](#ssl_accept_server_cert_subject-property) or [ssl_accept_server_cert_encoded](#ssl_accept_server_cert_encoded-property) is set, a search for a certificate is initiated. Please see the [ssl_accept_server_cert_subject](#ssl_accept_server_cert_subject-property) property for details.

 Designations of certificate stores are platform dependent.

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

# ssl_accept_server_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

```text
def get_ssl_accept_server_cert_store_password() -> str: ...
def set_ssl_accept_server_cert_store_password(value: str) -> None: ...
ssl_accept_server_cert_store_password = property(get_ssl_accept_server_cert_store_password, set_ssl_accept_server_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_accept_server_cert_store_type property

The type of certificate store for this certificate.

## Syntax

```text
def get_ssl_accept_server_cert_store_type() -> int: ...
def set_ssl_accept_server_cert_store_type(value: int) -> None: ...
ssl_accept_server_cert_store_type = property(get_ssl_accept_server_cert_store_type, set_ssl_accept_server_cert_store_type)
```

## Possible Values

```text
0   # User1   # Machine2   # PFXFile3   # PFXBlob4   # JKSFile5   # JKSBlob6   # PEMKeyFile7   # PEMKeyBlob8   # PublicKeyFile9   # PublicKeyBlob10   # SSHPublicKeyBlob11   # P7BFile12   # P7BBlob13   # SSHPublicKeyFile14   # PPKFile15   # PPKBlob16   # XMLFile17   # XMLBlob18   # JWKFile19   # JWKBlob20   # SecurityKey21   # BCFKSFile22   # BCFKSBlob23   # PKCS1199   # Auto
```

## Default Value

0

## Remarks

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:

```csharp
sftp.SSHCert = new Certificate(CertStoreTypes.cstPKCS11,
                               @"C:\Program Files\OpenSC Project\OpenSC\pkcs11\opensc-pkcs11.dll",
                               "123456", // PIN
                               "CN=cert_subject");
sftp.SSHUser = "test";
sftp.SSHLogon("myhost", 22);
```

```csharp
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);
```

|  |  |
| --- | --- |
| 0 (cstUser - default) | For Windows, this specifies that the certificate store is a certificate store owned by the current user. NOTE: This store type is not available in Java. |
| 1 (cstMachine) | For Windows, this specifies that the certificate store is a machine store. NOTE: This store type is not available in Java. |
| 2 (cstPFXFile) | The certificate store is the name of a PFX (PKCS#12) file containing certificates. |
| 3 (cstPFXBlob) | The certificate store is a string (binary or Base64-encoded) representing a certificate store in PFX (PKCS#12) format. |
| 4 (cstJKSFile) | The certificate store is the name of a Java Key Store (JKS) file containing certificates. NOTE: This store type is only available in Java. |
| 5 (cstJKSBlob) | The certificate store is a string (binary or Base64-encoded) representing a certificate store in Java Key Store (JKS) format. NOTE: This store type is only available in Java. |
| 6 (cstPEMKeyFile) | The certificate store is the name of a PEM-encoded file that contains a private key and an optional certificate. |
| 7 (cstPEMKeyBlob) | The certificate store is a string (binary or Base64-encoded) that contains a private key and an optional certificate. |
| 8 (cstPublicKeyFile) | The certificate store is the name of a file that contains a PEM- or DER-encoded public key certificate. |
| 9 (cstPublicKeyBlob) | The certificate store is a string (binary or Base64-encoded) that contains a PEM- or DER-encoded public key certificate. |
| 10 (cstSSHPublicKeyBlob) | The certificate store is a string (binary or Base64-encoded) that contains an SSH-style public key. |
| 11 (cstP7BFile) | The certificate store is the name of a PKCS#7 file containing certificates. |
| 12 (cstP7BBlob) | The certificate store is a string (binary) representing a certificate store in PKCS#7 format. |
| 13 (cstSSHPublicKeyFile) | The certificate store is the name of a file that contains an SSH-style public key. |
| 14 (cstPPKFile) | The certificate store is the name of a file that contains a PPK (PuTTY Private Key). |
| 15 (cstPPKBlob) | The certificate store is a string (binary) that contains a PPK (PuTTY Private Key). |
| 16 (cstXMLFile) | The certificate store is the name of a file that contains a certificate in XML format. |
| 17 (cstXMLBlob) | The certificate store is a string that contains a certificate in XML format. |
| 18 (cstJWKFile) | The certificate store is the name of a file that contains a JWK (JSON Web Key). |
| 19 (cstJWKBlob) | The certificate store is a string that contains a JWK (JSON Web Key). |
| 21 (cstBCFKSFile) | The certificate store is the name of a file that contains a BCFKS (Bouncy Castle FIPS Key Store). NOTE: This store type is only available in Java and .NET. |
| 22 (cstBCFKSBlob) | The certificate store is a string (binary or Base64-encoded) representing a certificate store in BCFKS (Bouncy Castle FIPS Key Store) format. NOTE: This store type is only available in Java and .NET. |
| 23 (cstPKCS11) | The certificate is present on a physical security key accessible via a PKCS#11 interface. To use a security key, create a new [Certificate](#Type_Certificate) object and pass cstPKCS11 as the [ssl_accept_server_cert_store_type](#ssl_accept_server_cert_store_type-property), the full path of the PKCS#11 DLL as the [ssl_accept_server_cert_store](#ssl_accept_server_cert_store-property), and the PIN as the [ssl_accept_server_cert_store_password](#ssl_accept_server_cert_store_password-property). Code Example. SSH Authentication with Security Key (without CertMgr): Alternatively, collect the necessary data using the [CertMgr](#CertMgr) class by calling the [list_store_certificates](#CertMgr_m_ListStoreCertificates) method after setting the corresponding properties accordingly. The certificate information returned in the [on_cert_list](#CertMgr_e_CertList) event's CertEncoded parameter may be saved for later use. When using a certificate obtained with this approach, pass the previously saved security key information as the [ssl_accept_server_cert_store](#ssl_accept_server_cert_store-property) and set [ssl_accept_server_cert_store_password](#ssl_accept_server_cert_store_password-property) to the PIN. Code Example. SSH Authentication with Security Key (with CertMgr): |
| 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_accept_server_cert_subject property

The subject of the certificate used for client authentication.

## Syntax

```text
def get_ssl_accept_server_cert_subject() -> str: ...
def set_ssl_accept_server_cert_subject(value: str) -> None: ...
ssl_accept_server_cert_subject = property(get_ssl_accept_server_cert_subject, set_ssl_accept_server_cert_subject)
```

## Default Value

""

## Remarks

The subject of the certificate used for client authentication.

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

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

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

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

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

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

| Field | Meaning |
| --- | --- |
| CN | Common Name. This is commonly a hostname 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.

# ssl_accept_server_cert_subject_alt_names property

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

## Syntax

```text
def get_ssl_accept_server_cert_subject_alt_names() -> str: ...
ssl_accept_server_cert_subject_alt_names = property(get_ssl_accept_server_cert_subject_alt_names, None)
```

## Default Value

""

## Remarks

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

This property is read-only.

# ssl_accept_server_cert_thumbprint_md5 property

The MD5 hash of the certificate.

## Syntax

```text
def get_ssl_accept_server_cert_thumbprint_md5() -> str: ...
ssl_accept_server_cert_thumbprint_md5 = property(get_ssl_accept_server_cert_thumbprint_md5, None)
```

## Default Value

""

## Remarks

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

This property is read-only.

# ssl_accept_server_cert_thumbprint_sha1 property

The SHA-1 hash of the certificate.

## Syntax

```text
def get_ssl_accept_server_cert_thumbprint_sha1() -> str: ...
ssl_accept_server_cert_thumbprint_sha1 = property(get_ssl_accept_server_cert_thumbprint_sha1, None)
```

## Default Value

""

## Remarks

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

This property is read-only.

# ssl_accept_server_cert_thumbprint_sha256 property

The SHA-256 hash of the certificate.

## Syntax

```text
def get_ssl_accept_server_cert_thumbprint_sha256() -> str: ...
ssl_accept_server_cert_thumbprint_sha256 = property(get_ssl_accept_server_cert_thumbprint_sha256, None)
```

## Default Value

""

## Remarks

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

This property is read-only.

# ssl_accept_server_cert_usage property

The text description of UsageFlags .

## Syntax

```text
def get_ssl_accept_server_cert_usage() -> str: ...
ssl_accept_server_cert_usage = property(get_ssl_accept_server_cert_usage, None)
```

## Default Value

""

## Remarks

The text description of [ssl_accept_server_cert_usage_flags](#ssl_accept_server_cert_usage_flags-property).

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

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

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

This property is read-only.

# ssl_accept_server_cert_usage_flags property

The flags that show intended use for the certificate.

## Syntax

```text
def get_ssl_accept_server_cert_usage_flags() -> int: ...
ssl_accept_server_cert_usage_flags = property(get_ssl_accept_server_cert_usage_flags, None)
```

## Default Value

0

## Remarks

The flags that show intended use for the certificate. The value of [ssl_accept_server_cert_usage_flags](#ssl_accept_server_cert_usage_flags-property) is a combination of the following flags:

|  |  |
| --- | --- |
| 0x80 | Digital Signature |
| 0x40 | Non-Repudiation |
| 0x20 | Key Encipherment |
| 0x10 | Data Encipherment |
| 0x08 | Key Agreement |
| 0x04 | Certificate Signing |
| 0x02 | CRL Signing |
| 0x01 | Encipher Only |

Please see the [ssl_accept_server_cert_usage](#ssl_accept_server_cert_usage-property) property for a text representation of [ssl_accept_server_cert_usage_flags](#ssl_accept_server_cert_usage_flags-property).

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

This property is read-only.

# ssl_accept_server_cert_version property

The certificate's version number.

## Syntax

```text
def get_ssl_accept_server_cert_version() -> str: ...
ssl_accept_server_cert_version = property(get_ssl_accept_server_cert_version, None)
```

## Default Value

""

## Remarks

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

This property is read-only.

# ssl_cert_effective_date property

The date on which this certificate becomes valid.

## Syntax

```text
def get_ssl_cert_effective_date() -> str: ...
ssl_cert_effective_date = property(get_ssl_cert_effective_date, None)
```

## Default Value

""

## Remarks

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

23-Jan-2000 15:00:00.

This property is read-only.

# ssl_cert_encoded property

The certificate (PEM/Base64 encoded).

## Syntax

```text
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

The certificate (PEM/Base64 encoded). This property is used to assign a specific certificate. The [ssl_cert_store](#ssl_cert_store-property) and [ssl_cert_subject](#ssl_cert_subject-property) properties also may be used to specify a certificate.

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

# ssl_cert_expiration_date property

The date on which the certificate expires.

## Syntax

```text
def get_ssl_cert_expiration_date() -> str: ...
ssl_cert_expiration_date = property(get_ssl_cert_expiration_date, None)
```

## Default Value

""

## Remarks

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

23-Jan-2001 15:00:00.

This property is read-only.

# ssl_cert_extended_key_usage property

A comma-delimited list of extended key usage identifiers.

## Syntax

```text
def get_ssl_cert_extended_key_usage() -> str: ...
ssl_cert_extended_key_usage = property(get_ssl_cert_extended_key_usage, None)
```

## Default Value

""

## Remarks

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

This property is read-only.

# ssl_cert_fingerprint property

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

## Syntax

```text
def get_ssl_cert_fingerprint() -> str: ...
ssl_cert_fingerprint = property(get_ssl_cert_fingerprint, None)
```

## Default Value

""

## Remarks

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

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

This property is read-only.

# ssl_cert_fingerprint_sha1 property

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

## Syntax

```text
def get_ssl_cert_fingerprint_sha1() -> str: ...
ssl_cert_fingerprint_sha1 = property(get_ssl_cert_fingerprint_sha1, None)
```

## Default Value

""

## Remarks

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

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

This property is read-only.

# ssl_cert_fingerprint_sha256 property

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

## Syntax

```text
def get_ssl_cert_fingerprint_sha256() -> str: ...
ssl_cert_fingerprint_sha256 = property(get_ssl_cert_fingerprint_sha256, None)
```

## Default Value

""

## Remarks

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

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

This property is read-only.

# ssl_cert_issuer property

The issuer of the certificate.

## Syntax

```text
def get_ssl_cert_issuer() -> str: ...
ssl_cert_issuer = property(get_ssl_cert_issuer, None)
```

## Default Value

""

## Remarks

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

This property is read-only.

# ssl_cert_private_key property

The private key of the certificate (if available).

## Syntax

```text
def get_ssl_cert_private_key() -> str: ...
ssl_cert_private_key = property(get_ssl_cert_private_key, None)
```

## Default Value

""

## Remarks

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

NOTE: The [ssl_cert_private_key](#ssl_cert_private_key-property) may be available but not exportable. In this case, [ssl_cert_private_key](#ssl_cert_private_key-property) returns an empty string.

This property is read-only.

# ssl_cert_private_key_available property

Whether a PrivateKey is available for the selected certificate.

## Syntax

```text
def get_ssl_cert_private_key_available() -> bool: ...
ssl_cert_private_key_available = property(get_ssl_cert_private_key_available, None)
```

## Default Value

FALSE

## Remarks

Whether a [ssl_cert_private_key](#ssl_cert_private_key-property) is available for the selected certificate. If [ssl_cert_private_key_available](#ssl_cert_private_key_available-property) is True, the certificate may be used for authentication purposes (e.g., server authentication).

This property is read-only.

# ssl_cert_private_key_container property

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

## Syntax

```text
def get_ssl_cert_private_key_container() -> str: ...
ssl_cert_private_key_container = property(get_ssl_cert_private_key_container, None)
```

## Default Value

""

## Remarks

The name of the [ssl_cert_private_key](#ssl_cert_private_key-property) container for the certificate (if available). This functionality is available only on Windows platforms.

This property is read-only.

# ssl_cert_public_key property

The public key of the certificate.

## Syntax

```text
def get_ssl_cert_public_key() -> str: ...
ssl_cert_public_key = property(get_ssl_cert_public_key, None)
```

## Default Value

""

## Remarks

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

This property is read-only.

# ssl_cert_public_key_algorithm property

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

## Syntax

```text
def get_ssl_cert_public_key_algorithm() -> str: ...
ssl_cert_public_key_algorithm = property(get_ssl_cert_public_key_algorithm, None)
```

## Default Value

""

## Remarks

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

This property is read-only.

# ssl_cert_public_key_length property

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

## Syntax

```text
def get_ssl_cert_public_key_length() -> int: ...
ssl_cert_public_key_length = property(get_ssl_cert_public_key_length, None)
```

## Default Value

0

## Remarks

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

This property is read-only.

# ssl_cert_serial_number property

The serial number of the certificate encoded as a string.

## Syntax

```text
def get_ssl_cert_serial_number() -> str: ...
ssl_cert_serial_number = property(get_ssl_cert_serial_number, None)
```

## Default Value

""

## Remarks

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

This property is read-only.

# ssl_cert_signature_algorithm property

The text description of the certificate's signature algorithm.

## Syntax

```text
def get_ssl_cert_signature_algorithm() -> str: ...
ssl_cert_signature_algorithm = property(get_ssl_cert_signature_algorithm, None)
```

## Default Value

""

## Remarks

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

This property is read-only.

# ssl_cert_store property

The name of the certificate store for the client certificate.

## Syntax

```text
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

The name of the certificate store for the client certificate.

The [ssl_cert_store_type](#ssl_cert_store_type-property) property denotes the type of the certificate store specified by [ssl_cert_store](#ssl_cert_store-property). If the store is password-protected, specify the password in [ssl_cert_store_password](#ssl_cert_store_password-property).

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

 Designations of certificate stores are platform dependent.

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

# 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

```text
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

The type of certificate store for this certificate.

## Syntax

```text
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)
```

## Possible Values

```text
0   # User1   # Machine2   # PFXFile3   # PFXBlob4   # JKSFile5   # JKSBlob6   # PEMKeyFile7   # PEMKeyBlob8   # PublicKeyFile9   # PublicKeyBlob10   # SSHPublicKeyBlob11   # P7BFile12   # P7BBlob13   # SSHPublicKeyFile14   # PPKFile15   # PPKBlob16   # XMLFile17   # XMLBlob18   # JWKFile19   # JWKBlob20   # SecurityKey21   # BCFKSFile22   # BCFKSBlob23   # PKCS1199   # Auto
```

## Default Value

0

## Remarks

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:

```csharp
sftp.SSHCert = new Certificate(CertStoreTypes.cstPKCS11,
                               @"C:\Program Files\OpenSC Project\OpenSC\pkcs11\opensc-pkcs11.dll",
                               "123456", // PIN
                               "CN=cert_subject");
sftp.SSHUser = "test";
sftp.SSHLogon("myhost", 22);
```

```csharp
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);
```

|  |  |
| --- | --- |
| 0 (cstUser - default) | For Windows, this specifies that the certificate store is a certificate store owned by the current user. NOTE: This store type is not available in Java. |
| 1 (cstMachine) | For Windows, this specifies that the certificate store is a machine store. NOTE: This store type is not available in Java. |
| 2 (cstPFXFile) | The certificate store is the name of a PFX (PKCS#12) file containing certificates. |
| 3 (cstPFXBlob) | The certificate store is a string (binary or Base64-encoded) representing a certificate store in PFX (PKCS#12) format. |
| 4 (cstJKSFile) | The certificate store is the name of a Java Key Store (JKS) file containing certificates. NOTE: This store type is only available in Java. |
| 5 (cstJKSBlob) | The certificate store is a string (binary or Base64-encoded) representing a certificate store in Java Key Store (JKS) format. NOTE: This store type is only available in Java. |
| 6 (cstPEMKeyFile) | The certificate store is the name of a PEM-encoded file that contains a private key and an optional certificate. |
| 7 (cstPEMKeyBlob) | The certificate store is a string (binary or Base64-encoded) that contains a private key and an optional certificate. |
| 8 (cstPublicKeyFile) | The certificate store is the name of a file that contains a PEM- or DER-encoded public key certificate. |
| 9 (cstPublicKeyBlob) | The certificate store is a string (binary or Base64-encoded) that contains a PEM- or DER-encoded public key certificate. |
| 10 (cstSSHPublicKeyBlob) | The certificate store is a string (binary or Base64-encoded) that contains an SSH-style public key. |
| 11 (cstP7BFile) | The certificate store is the name of a PKCS#7 file containing certificates. |
| 12 (cstP7BBlob) | The certificate store is a string (binary) representing a certificate store in PKCS#7 format. |
| 13 (cstSSHPublicKeyFile) | The certificate store is the name of a file that contains an SSH-style public key. |
| 14 (cstPPKFile) | The certificate store is the name of a file that contains a PPK (PuTTY Private Key). |
| 15 (cstPPKBlob) | The certificate store is a string (binary) that contains a PPK (PuTTY Private Key). |
| 16 (cstXMLFile) | The certificate store is the name of a file that contains a certificate in XML format. |
| 17 (cstXMLBlob) | The certificate store is a string that contains a certificate in XML format. |
| 18 (cstJWKFile) | The certificate store is the name of a file that contains a JWK (JSON Web Key). |
| 19 (cstJWKBlob) | The certificate store is a string that contains a JWK (JSON Web Key). |
| 21 (cstBCFKSFile) | The certificate store is the name of a file that contains a BCFKS (Bouncy Castle FIPS Key Store). NOTE: This store type is only available in Java and .NET. |
| 22 (cstBCFKSBlob) | The certificate store is a string (binary or Base64-encoded) representing a certificate store in BCFKS (Bouncy Castle FIPS Key Store) format. NOTE: This store type is only available in Java and .NET. |
| 23 (cstPKCS11) | The certificate is present on a physical security key accessible via a PKCS#11 interface. To use a security key, create a new [Certificate](#Type_Certificate) object and pass cstPKCS11 as the [ssl_cert_store_type](#ssl_cert_store_type-property), the full path of the PKCS#11 DLL as the [ssl_cert_store](#ssl_cert_store-property), and the PIN as the [ssl_cert_store_password](#ssl_cert_store_password-property). Code Example. SSH Authentication with Security Key (without CertMgr): Alternatively, collect the necessary data using the [CertMgr](#CertMgr) class by calling the [list_store_certificates](#CertMgr_m_ListStoreCertificates) method after setting the corresponding properties accordingly. The certificate information returned in the [on_cert_list](#CertMgr_e_CertList) event's CertEncoded parameter may be saved for later use. When using a certificate obtained with this approach, pass the previously saved security key information as the [ssl_cert_store](#ssl_cert_store-property) and set [ssl_cert_store_password](#ssl_cert_store_password-property) to the PIN. Code Example. SSH Authentication with Security Key (with CertMgr): |
| 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

The subject of the certificate used for client authentication.

## Syntax

```text
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

The subject of the certificate used for client authentication.

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

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

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

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

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

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

| Field | Meaning |
| --- | --- |
| CN | Common Name. This is commonly a hostname 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.

# ssl_cert_subject_alt_names property

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

## Syntax

```text
def get_ssl_cert_subject_alt_names() -> str: ...
ssl_cert_subject_alt_names = property(get_ssl_cert_subject_alt_names, None)
```

## Default Value

""

## Remarks

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

This property is read-only.

# ssl_cert_thumbprint_md5 property

The MD5 hash of the certificate.

## Syntax

```text
def get_ssl_cert_thumbprint_md5() -> str: ...
ssl_cert_thumbprint_md5 = property(get_ssl_cert_thumbprint_md5, None)
```

## Default Value

""

## Remarks

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

This property is read-only.

# ssl_cert_thumbprint_sha1 property

The SHA-1 hash of the certificate.

## Syntax

```text
def get_ssl_cert_thumbprint_sha1() -> str: ...
ssl_cert_thumbprint_sha1 = property(get_ssl_cert_thumbprint_sha1, None)
```

## Default Value

""

## Remarks

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

This property is read-only.

# ssl_cert_thumbprint_sha256 property

The SHA-256 hash of the certificate.

## Syntax

```text
def get_ssl_cert_thumbprint_sha256() -> str: ...
ssl_cert_thumbprint_sha256 = property(get_ssl_cert_thumbprint_sha256, None)
```

## Default Value

""

## Remarks

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

This property is read-only.

# ssl_cert_usage property

The text description of UsageFlags .

## Syntax

```text
def get_ssl_cert_usage() -> str: ...
ssl_cert_usage = property(get_ssl_cert_usage, None)
```

## Default Value

""

## Remarks

The text description of [ssl_cert_usage_flags](#ssl_cert_usage_flags-property).

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

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

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

This property is read-only.

# ssl_cert_usage_flags property

The flags that show intended use for the certificate.

## Syntax

```text
def get_ssl_cert_usage_flags() -> int: ...
ssl_cert_usage_flags = property(get_ssl_cert_usage_flags, None)
```

## Default Value

0

## Remarks

The flags that show intended use for the certificate. The value of [ssl_cert_usage_flags](#ssl_cert_usage_flags-property) is a combination of the following flags:

|  |  |
| --- | --- |
| 0x80 | Digital Signature |
| 0x40 | Non-Repudiation |
| 0x20 | Key Encipherment |
| 0x10 | Data Encipherment |
| 0x08 | Key Agreement |
| 0x04 | Certificate Signing |
| 0x02 | CRL Signing |
| 0x01 | Encipher Only |

Please see the [ssl_cert_usage](#ssl_cert_usage-property) property for a text representation of [ssl_cert_usage_flags](#ssl_cert_usage_flags-property).

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

This property is read-only.

# ssl_cert_version property

The certificate's version number.

## Syntax

```text
def get_ssl_cert_version() -> str: ...
ssl_cert_version = property(get_ssl_cert_version, None)
```

## Default Value

""

## Remarks

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

This property is read-only.

# ssl_enabled property

This property indicates whether Transport Layer Security/Secure Sockets Layer (TLS/SSL) is enabled.

## Syntax

```text
def get_ssl_enabled() -> bool: ...
def set_ssl_enabled(value: bool) -> None: ...
ssl_enabled = property(get_ssl_enabled, set_ssl_enabled)
```

## Default Value

FALSE

## Remarks

This property specifies whether TLS/SSL is enabled in the class. When False (default), the class operates in plaintext mode. When True, TLS/SSL is enabled.

TLS/SSL may also be enabled by setting [ssl_start_mode](#ssl_start_mode-property). Setting [ssl_start_mode](#ssl_start_mode-property) will automatically update this property value.

# ssl_provider property

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

## Syntax

```text
def get_ssl_provider() -> int: ...
def set_ssl_provider(value: int) -> None: ...
ssl_provider = property(get_ssl_provider, set_ssl_provider)
```

## Possible Values

```text
0   # Automatic1   # Platform2   # Internal
```

## Default Value

0

## Remarks

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

Possible values are as follows:

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

 **Additional Notes**

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

When Automatic is selected, on Windows, the class will use the platform implementation. On Linux/macOS, the class will use the internal implementation. When TLS 1.3 is enabled via [SSLEnabledProtocols](#SSLEnabledProtocols), the class will always try and use the platform implementation. If the platform TLS 1.3 implementation is not available, the internal implementation will be used.

# ssl_server_cert_effective_date property

The date on which this certificate becomes valid.

## Syntax

```text
def get_ssl_server_cert_effective_date() -> str: ...
ssl_server_cert_effective_date = property(get_ssl_server_cert_effective_date, None)
```

## Default Value

""

## Remarks

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

23-Jan-2000 15:00:00.

This property is read-only.

# ssl_server_cert_encoded property

The certificate (PEM/Base64 encoded).

## Syntax

```text
def get_ssl_server_cert_encoded() -> bytes: ...
ssl_server_cert_encoded = property(get_ssl_server_cert_encoded, None)
```

## Default Value

""

## Remarks

The certificate (PEM/Base64 encoded). This property is used to assign a specific certificate. The [ssl_server_cert_store](#ssl_server_cert_store-property) and [ssl_server_cert_subject](#ssl_server_cert_subject-property) properties also may be used to specify a certificate.

When [ssl_server_cert_encoded](#ssl_server_cert_encoded-property) is set, a search is initiated in the current [ssl_server_cert_store](#ssl_server_cert_store-property) for the private key of the certificate. If the key is found, [ssl_server_cert_subject](#ssl_server_cert_subject-property) is updated to reflect the full subject of the selected certificate; otherwise, [ssl_server_cert_subject](#ssl_server_cert_subject-property) is set to an empty string.

This property is read-only.

# ssl_server_cert_expiration_date property

The date on which the certificate expires.

## Syntax

```text
def get_ssl_server_cert_expiration_date() -> str: ...
ssl_server_cert_expiration_date = property(get_ssl_server_cert_expiration_date, None)
```

## Default Value

""

## Remarks

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

23-Jan-2001 15:00:00.

This property is read-only.

# ssl_server_cert_extended_key_usage property

A comma-delimited list of extended key usage identifiers.

## Syntax

```text
def get_ssl_server_cert_extended_key_usage() -> str: ...
ssl_server_cert_extended_key_usage = property(get_ssl_server_cert_extended_key_usage, None)
```

## Default Value

""

## Remarks

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

This property is read-only.

# ssl_server_cert_fingerprint property

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

## Syntax

```text
def get_ssl_server_cert_fingerprint() -> str: ...
ssl_server_cert_fingerprint = property(get_ssl_server_cert_fingerprint, None)
```

## Default Value

""

## Remarks

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

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

This property is read-only.

# ssl_server_cert_fingerprint_sha1 property

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

## Syntax

```text
def get_ssl_server_cert_fingerprint_sha1() -> str: ...
ssl_server_cert_fingerprint_sha1 = property(get_ssl_server_cert_fingerprint_sha1, None)
```

## Default Value

""

## Remarks

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

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

This property is read-only.

# ssl_server_cert_fingerprint_sha256 property

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

## Syntax

```text
def get_ssl_server_cert_fingerprint_sha256() -> str: ...
ssl_server_cert_fingerprint_sha256 = property(get_ssl_server_cert_fingerprint_sha256, None)
```

## Default Value

""

## Remarks

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

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

This property is read-only.

# ssl_server_cert_issuer property

The issuer of the certificate.

## Syntax

```text
def get_ssl_server_cert_issuer() -> str: ...
ssl_server_cert_issuer = property(get_ssl_server_cert_issuer, None)
```

## Default Value

""

## Remarks

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

This property is read-only.

# ssl_server_cert_private_key property

The private key of the certificate (if available).

## Syntax

```text
def get_ssl_server_cert_private_key() -> str: ...
ssl_server_cert_private_key = property(get_ssl_server_cert_private_key, None)
```

## Default Value

""

## Remarks

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

NOTE: The [ssl_server_cert_private_key](#ssl_server_cert_private_key-property) may be available but not exportable. In this case, [ssl_server_cert_private_key](#ssl_server_cert_private_key-property) returns an empty string.

This property is read-only.

# ssl_server_cert_private_key_available property

Whether a PrivateKey is available for the selected certificate.

## Syntax

```text
def get_ssl_server_cert_private_key_available() -> bool: ...
ssl_server_cert_private_key_available = property(get_ssl_server_cert_private_key_available, None)
```

## Default Value

FALSE

## Remarks

Whether a [ssl_server_cert_private_key](#ssl_server_cert_private_key-property) is available for the selected certificate. If [ssl_server_cert_private_key_available](#ssl_server_cert_private_key_available-property) is True, the certificate may be used for authentication purposes (e.g., server authentication).

This property is read-only.

# ssl_server_cert_private_key_container property

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

## Syntax

```text
def get_ssl_server_cert_private_key_container() -> str: ...
ssl_server_cert_private_key_container = property(get_ssl_server_cert_private_key_container, None)
```

## Default Value

""

## Remarks

The name of the [ssl_server_cert_private_key](#ssl_server_cert_private_key-property) container for the certificate (if available). This functionality is available only on Windows platforms.

This property is read-only.

# ssl_server_cert_public_key property

The public key of the certificate.

## Syntax

```text
def get_ssl_server_cert_public_key() -> str: ...
ssl_server_cert_public_key = property(get_ssl_server_cert_public_key, None)
```

## Default Value

""

## Remarks

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

This property is read-only.

# ssl_server_cert_public_key_algorithm property

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

## Syntax

```text
def get_ssl_server_cert_public_key_algorithm() -> str: ...
ssl_server_cert_public_key_algorithm = property(get_ssl_server_cert_public_key_algorithm, None)
```

## Default Value

""

## Remarks

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

This property is read-only.

# ssl_server_cert_public_key_length property

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

## Syntax

```text
def get_ssl_server_cert_public_key_length() -> int: ...
ssl_server_cert_public_key_length = property(get_ssl_server_cert_public_key_length, None)
```

## Default Value

0

## Remarks

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

This property is read-only.

# ssl_server_cert_serial_number property

The serial number of the certificate encoded as a string.

## Syntax

```text
def get_ssl_server_cert_serial_number() -> str: ...
ssl_server_cert_serial_number = property(get_ssl_server_cert_serial_number, None)
```

## Default Value

""

## Remarks

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

This property is read-only.

# ssl_server_cert_signature_algorithm property

The text description of the certificate's signature algorithm.

## Syntax

```text
def get_ssl_server_cert_signature_algorithm() -> str: ...
ssl_server_cert_signature_algorithm = property(get_ssl_server_cert_signature_algorithm, None)
```

## Default Value

""

## Remarks

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

This property is read-only.

# ssl_server_cert_store property

The name of the certificate store for the client certificate.

## Syntax

```text
def get_ssl_server_cert_store() -> bytes: ...
ssl_server_cert_store = property(get_ssl_server_cert_store, None)
```

## Default Value

"MY"

## Remarks

The name of the certificate store for the client certificate.

The [ssl_server_cert_store_type](#ssl_server_cert_store_type-property) property denotes the type of the certificate store specified by [ssl_server_cert_store](#ssl_server_cert_store-property). If the store is password-protected, specify the password in [ssl_server_cert_store_password](#ssl_server_cert_store_password-property).

[ssl_server_cert_store](#ssl_server_cert_store-property) is used in conjunction with the [ssl_server_cert_subject](#ssl_server_cert_subject-property) property to specify client certificates. If [ssl_server_cert_store](#ssl_server_cert_store-property) has a value, and [ssl_server_cert_subject](#ssl_server_cert_subject-property) or [ssl_server_cert_encoded](#ssl_server_cert_encoded-property) is set, a search for a certificate is initiated. Please see the [ssl_server_cert_subject](#ssl_server_cert_subject-property) property for details.

 Designations of certificate stores are platform dependent.

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

This property is read-only.

# ssl_server_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

```text
def get_ssl_server_cert_store_password() -> str: ...
ssl_server_cert_store_password = property(get_ssl_server_cert_store_password, 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.

This property is read-only.

# ssl_server_cert_store_type property

The type of certificate store for this certificate.

## Syntax

```text
def get_ssl_server_cert_store_type() -> int: ...
ssl_server_cert_store_type = property(get_ssl_server_cert_store_type, None)
```

## Possible Values

```text
0   # User1   # Machine2   # PFXFile3   # PFXBlob4   # JKSFile5   # JKSBlob6   # PEMKeyFile7   # PEMKeyBlob8   # PublicKeyFile9   # PublicKeyBlob10   # SSHPublicKeyBlob11   # P7BFile12   # P7BBlob13   # SSHPublicKeyFile14   # PPKFile15   # PPKBlob16   # XMLFile17   # XMLBlob18   # JWKFile19   # JWKBlob20   # SecurityKey21   # BCFKSFile22   # BCFKSBlob23   # PKCS1199   # Auto
```

## Default Value

0

## Remarks

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:

```csharp
sftp.SSHCert = new Certificate(CertStoreTypes.cstPKCS11,
                               @"C:\Program Files\OpenSC Project\OpenSC\pkcs11\opensc-pkcs11.dll",
                               "123456", // PIN
                               "CN=cert_subject");
sftp.SSHUser = "test";
sftp.SSHLogon("myhost", 22);
```

```csharp
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);
```

|  |  |
| --- | --- |
| 0 (cstUser - default) | For Windows, this specifies that the certificate store is a certificate store owned by the current user. NOTE: This store type is not available in Java. |
| 1 (cstMachine) | For Windows, this specifies that the certificate store is a machine store. NOTE: This store type is not available in Java. |
| 2 (cstPFXFile) | The certificate store is the name of a PFX (PKCS#12) file containing certificates. |
| 3 (cstPFXBlob) | The certificate store is a string (binary or Base64-encoded) representing a certificate store in PFX (PKCS#12) format. |
| 4 (cstJKSFile) | The certificate store is the name of a Java Key Store (JKS) file containing certificates. NOTE: This store type is only available in Java. |
| 5 (cstJKSBlob) | The certificate store is a string (binary or Base64-encoded) representing a certificate store in Java Key Store (JKS) format. NOTE: This store type is only available in Java. |
| 6 (cstPEMKeyFile) | The certificate store is the name of a PEM-encoded file that contains a private key and an optional certificate. |
| 7 (cstPEMKeyBlob) | The certificate store is a string (binary or Base64-encoded) that contains a private key and an optional certificate. |
| 8 (cstPublicKeyFile) | The certificate store is the name of a file that contains a PEM- or DER-encoded public key certificate. |
| 9 (cstPublicKeyBlob) | The certificate store is a string (binary or Base64-encoded) that contains a PEM- or DER-encoded public key certificate. |
| 10 (cstSSHPublicKeyBlob) | The certificate store is a string (binary or Base64-encoded) that contains an SSH-style public key. |
| 11 (cstP7BFile) | The certificate store is the name of a PKCS#7 file containing certificates. |
| 12 (cstP7BBlob) | The certificate store is a string (binary) representing a certificate store in PKCS#7 format. |
| 13 (cstSSHPublicKeyFile) | The certificate store is the name of a file that contains an SSH-style public key. |
| 14 (cstPPKFile) | The certificate store is the name of a file that contains a PPK (PuTTY Private Key). |
| 15 (cstPPKBlob) | The certificate store is a string (binary) that contains a PPK (PuTTY Private Key). |
| 16 (cstXMLFile) | The certificate store is the name of a file that contains a certificate in XML format. |
| 17 (cstXMLBlob) | The certificate store is a string that contains a certificate in XML format. |
| 18 (cstJWKFile) | The certificate store is the name of a file that contains a JWK (JSON Web Key). |
| 19 (cstJWKBlob) | The certificate store is a string that contains a JWK (JSON Web Key). |
| 21 (cstBCFKSFile) | The certificate store is the name of a file that contains a BCFKS (Bouncy Castle FIPS Key Store). NOTE: This store type is only available in Java and .NET. |
| 22 (cstBCFKSBlob) | The certificate store is a string (binary or Base64-encoded) representing a certificate store in BCFKS (Bouncy Castle FIPS Key Store) format. NOTE: This store type is only available in Java and .NET. |
| 23 (cstPKCS11) | The certificate is present on a physical security key accessible via a PKCS#11 interface. To use a security key, create a new [Certificate](#Type_Certificate) object and pass cstPKCS11 as the [ssl_server_cert_store_type](#ssl_server_cert_store_type-property), the full path of the PKCS#11 DLL as the [ssl_server_cert_store](#ssl_server_cert_store-property), and the PIN as the [ssl_server_cert_store_password](#ssl_server_cert_store_password-property). Code Example. SSH Authentication with Security Key (without CertMgr): Alternatively, collect the necessary data using the [CertMgr](#CertMgr) class by calling the [list_store_certificates](#CertMgr_m_ListStoreCertificates) method after setting the corresponding properties accordingly. The certificate information returned in the [on_cert_list](#CertMgr_e_CertList) event's CertEncoded parameter may be saved for later use. When using a certificate obtained with this approach, pass the previously saved security key information as the [ssl_server_cert_store](#ssl_server_cert_store-property) and set [ssl_server_cert_store_password](#ssl_server_cert_store_password-property) to the PIN. Code Example. SSH Authentication with Security Key (with CertMgr): |
| 99 (cstAuto) | The store type is automatically detected from the input data. This setting may be used with both public and private keys and can detect any of the supported formats automatically. |

This property is read-only.

# ssl_server_cert_subject property

The subject of the certificate used for client authentication.

## Syntax

```text
def get_ssl_server_cert_subject() -> str: ...
ssl_server_cert_subject = property(get_ssl_server_cert_subject, None)
```

## Default Value

""

## Remarks

The subject of the certificate used for client authentication.

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

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

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

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

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

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

| Field | Meaning |
| --- | --- |
| CN | Common Name. This is commonly a hostname 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.

This property is read-only.

# ssl_server_cert_subject_alt_names property

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

## Syntax

```text
def get_ssl_server_cert_subject_alt_names() -> str: ...
ssl_server_cert_subject_alt_names = property(get_ssl_server_cert_subject_alt_names, None)
```

## Default Value

""

## Remarks

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

This property is read-only.

# ssl_server_cert_thumbprint_md5 property

The MD5 hash of the certificate.

## Syntax

```text
def get_ssl_server_cert_thumbprint_md5() -> str: ...
ssl_server_cert_thumbprint_md5 = property(get_ssl_server_cert_thumbprint_md5, None)
```

## Default Value

""

## Remarks

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

This property is read-only.

# ssl_server_cert_thumbprint_sha1 property

The SHA-1 hash of the certificate.

## Syntax

```text
def get_ssl_server_cert_thumbprint_sha1() -> str: ...
ssl_server_cert_thumbprint_sha1 = property(get_ssl_server_cert_thumbprint_sha1, None)
```

## Default Value

""

## Remarks

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

This property is read-only.

# ssl_server_cert_thumbprint_sha256 property

The SHA-256 hash of the certificate.

## Syntax

```text
def get_ssl_server_cert_thumbprint_sha256() -> str: ...
ssl_server_cert_thumbprint_sha256 = property(get_ssl_server_cert_thumbprint_sha256, None)
```

## Default Value

""

## Remarks

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

This property is read-only.

# ssl_server_cert_usage property

The text description of UsageFlags .

## Syntax

```text
def get_ssl_server_cert_usage() -> str: ...
ssl_server_cert_usage = property(get_ssl_server_cert_usage, None)
```

## Default Value

""

## Remarks

The text description of [ssl_server_cert_usage_flags](#ssl_server_cert_usage_flags-property).

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

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

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

This property is read-only.

# ssl_server_cert_usage_flags property

The flags that show intended use for the certificate.

## Syntax

```text
def get_ssl_server_cert_usage_flags() -> int: ...
ssl_server_cert_usage_flags = property(get_ssl_server_cert_usage_flags, None)
```

## Default Value

0

## Remarks

The flags that show intended use for the certificate. The value of [ssl_server_cert_usage_flags](#ssl_server_cert_usage_flags-property) is a combination of the following flags:

|  |  |
| --- | --- |
| 0x80 | Digital Signature |
| 0x40 | Non-Repudiation |
| 0x20 | Key Encipherment |
| 0x10 | Data Encipherment |
| 0x08 | Key Agreement |
| 0x04 | Certificate Signing |
| 0x02 | CRL Signing |
| 0x01 | Encipher Only |

Please see the [ssl_server_cert_usage](#ssl_server_cert_usage-property) property for a text representation of [ssl_server_cert_usage_flags](#ssl_server_cert_usage_flags-property).

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

This property is read-only.

# ssl_server_cert_version property

The certificate's version number.

## Syntax

```text
def get_ssl_server_cert_version() -> str: ...
ssl_server_cert_version = property(get_ssl_server_cert_version, None)
```

## Default Value

""

## Remarks

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

This property is read-only.

# ssl_start_mode property

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

## Syntax

```text
def get_ssl_start_mode() -> int: ...
def set_ssl_start_mode(value: int) -> None: ...
ssl_start_mode = property(get_ssl_start_mode, set_ssl_start_mode)
```

## Possible Values

```text
0   # Automatic1   # Implicit2   # Explicit3   # None
```

## Default Value

3

## Remarks

The ssl_start_mode property may have one of the following values:

|  |  |
| --- | --- |
| 0 (sslAutomatic) | If the remote port is set to the standard plaintext port of the protocol (where applicable), the class will behave the same as if ssl_start_mode is set to sslExplicit. In all other cases, SSL negotiation will be implicit (sslImplicit). |
| 1 (sslImplicit) | The SSL negotiation will start immediately after the connection is established. |
| 2 (sslExplicit) | The class will first connect in plaintext, and then will explicitly start SSL negotiation through a protocol command such as STARTTLS. |
| 3 (sslNone - default) | No SSL negotiation; no SSL security. All communication will be in plaintext mode. |

# system_type property

This property contains a string representing the type of system during a connection.

## Syntax

```text
def get_system_type() -> str: ...
def set_system_type(value: str) -> None: ...
system_type = property(get_system_type, set_system_type)
```

## Default Value

""

## Remarks

This property contains a string representing the type of system during a connection. Some SMS servers require that a system type be supplied during connection. The system type is a string representation, usually as an abbreviation, of a particular kind of system. The string cannot exceed 12 bytes.

# timeout property

The timeout for the class.

## Syntax

```text
def get_timeout() -> int: ...
def set_timeout(value: int) -> None: ...
timeout = property(get_timeout, set_timeout)
```

## Default Value

60

## Remarks

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

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

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

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

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

The default value for the timeout property is 60 seconds.

# user_id property

This property is used for identification with the SMPP service.

## Syntax

```text
def get_user_id() -> str: ...
def set_user_id(value: str) -> None: ...
user_id = property(get_user_id, set_user_id)
```

## Default Value

""

## Remarks

This property is used for identification with the SMPP service. When binding to the [smpp_server](#smpp_server-property), the client must provide a known user identifier and a valid password for that Id.

The two ways to bind are (1) by calling [connect](#connect-method) with a user Id and password, which will set the user_id and [password](#password-property) properties before connecting; or (2) by setting those two properties and calling [send_message](#send_message-method) while not connected.

# add_recipient method

This method will add a recipient of the specified type to the recipient list.

## Syntax

```text
def add_recipient(recipient_type: int, recipient_address: str) -> None: ...
```

## Remarks

This method will add a recipient of the specified type to the recipient list. For normal-type recipients, the addresses should be either a dotted IPv4 address (for sending messages to other SMS-enabled applications) or the directory number of a mobile phone. To send messages to distributed lists, the name of the list should be used.

Valid values for *recipient_type* are as follows:

|  |  |
| --- | --- |
| 0 (smppRecipientTypeNormal) | Normal SME (Short Message Entity) Address |
| 1 (smppRecipientTypeList) | Distribution List |

# cancel_message method

This method will cancel the specified message.

## Syntax

```text
def cancel_message(message_id: str) -> None: ...
```

## Remarks

This method will cancel the message stored on the [smpp_server](#smpp_server-property) under the value in *message_id*.

# check_link method

This method will check the connection to the server.

## Syntax

```text
def check_link() -> None: ...
```

## Remarks

This method will check the connection to the server. This method is used to ensure that the host on the other end of the connection is still active, or that it is still available. Although a socket connection may still be available between the client and server, the SMS application on the server may have been taken offline without releasing the socket or the CPU may be bogged down. This method will send a PDU to the server and wait the length of [timeout](#timeout-property) for a response.

# check_message_status method

This method will retrieve the status of the specified message.

## Syntax

```text
def check_message_status(message_id: str) -> None: ...
```

## Remarks

This method will retrieve the last known status of the message stored on the server under *message_id*. The class will fire a [on_message_status](#on_message_status-event) containing the parsed response from the server.

# config method

Sets or retrieves a configuration setting.

## Syntax

```text
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](#smpp-config-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](#smpp-config-settings), you must call *Config("PROPERTY")*. The value will be returned as a string.

# connect method

This method will bind as a transceiver to the SMPP service.

## Syntax

```text
def connect() -> None: ...
```

## Remarks

This method will establish a socket connection to the [smpp_server](#smpp_server-property) and attempt to bind as a transceiver. Once the bind operation has been completed, a [on_connected](#on_connected-event) event will be fired containing the status of the connection.

# connect_to method

This method will bind as a transceiver to the SMPP service.

## Syntax

```text
def connect_to(user_id: str, password: str) -> None: ...
```

## Remarks

This method will establish a socket connection to the [smpp_server](#smpp_server-property) and attempt to bind as a transceiver. Once the bind operation has completed, a [on_connected](#on_connected-event) event will be fired containing the status of the connection.

# disconnect method

This method will disconnect from the SMPP service.

## Syntax

```text
def disconnect() -> None: ...
```

## Remarks

This method will send an unbind command and close the socket connection to the [smpp_server](#smpp_server-property). After an unbind operation and socket closing, a [on_disconnected](#on_disconnected-event) event will be fired containing the status of the unbind operation.

# do_events method

This method processes events from the internal message queue.

## Syntax

```text
def do_events() -> None: ...
```

## Remarks

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

# interrupt method

This method interrupts the current method.

## Syntax

```text
def interrupt() -> None: ...
```

## Remarks

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

# replace_message method

This method replaces a previously sent message with a new one.

## Syntax

```text
def replace_message(message_id: str, new_message: str) -> None: ...
```

## Remarks

Assuming that a message on the [smpp_server](#smpp_server-property) is being stored under the value in *message_id*, this method will replace that message with the value in *new_message*.

If no message corresponds to *message_id*, the SMS service will respond with an error message.

# reset method

This method will reset the class.

## Syntax

```text
def reset() -> None: ...
```

## Remarks

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

# send_command method

This method will format and send a protocol data unit (PDU) using the specified command identifier and payload.

## Syntax

```text
def send_command(command_id: int, payload: bytes) -> bytes: ...
```

## Remarks

This method offers a way to do more with the class than is directly supported. This method takes a command identifier and a payload, which includes every required and optional field after the header, and creates the 16-byte header for it before sending it to the server. The response PDU is returned both in the PITrail and by this method.

# send_data method

This method sends raw data to Recipients .

## Syntax

```text
def send_data(data: bytes) -> str: ...
```

## Remarks

This method sends raw data to recipients. Up to 64 KB of additional data can be supplied at a time for transmission to the [smpp_server](#smpp_server-property). Unlike the [send_message](#send_message-method) method, this method can send to only one destination at a time. The target is whatever value is in the recipients properties.

# send_message method

This method sends a message to all recipients in the recipient list.

## Syntax

```text
def send_message(message: str) -> str: ...
```

## Remarks

This method sends a message to all recipients in the recipient list. The return value of this method is the server-assigned identifier of the message. The maximum size of the message sent is 256 bytes.

# on_connected event

This event is fired after a successful bind operation.

## Syntax

```text
class SMPPConnectedEventParams(object):
  @property
  def status_code() -> int: ...

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

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

## Remarks

After establishing a socket connection to the [smpp_server](#smpp_server-property), the class will attempt to send a bind as a transmitter command. Upon completion of this operation, the server will respond with either a success or failure state, which will be reflected in the on_connected event's parameters.

*status_code* will contain the command status (error code) returned by the server. For a *status_code* of *0*, *description* will be *OK*. Otherwise, it will contain a standard interpretation of the error.

# on_connection_status event

Fired to indicate changes in the connection state.

## Syntax

```text
class SMPPConnectionStatusEventParams(object):
  @property
  def connection_event() -> str: ...

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

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

# In class SMPP:
@property
def on_connection_status() -> Callable[[SMPPConnectionStatusEventParams], None]: ...
@on_connection_status.setter
def on_connection_status(event_hook: Callable[[SMPPConnectionStatusEventParams], None]) -> None: ...
```

## Remarks

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

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

|  |  |
| --- | --- |
|  | Firewall connection complete. |
|  | Secure Sockets Layer (SSL) or S/Shell handshake complete (where applicable). |
|  | Remote host connection complete. |
|  | Remote host disconnected. |
|  | SSL or S/Shell connection broken. |
|  | Firewall host disconnected. |

 *status_code* has the error code returned by the Transmission Control Protocol (TCP)/IP stack. *description* contains a description of this code. The value of *status_code* is equal to the value of the error.

# on_disconnected event

This event is fired when connection to the SMS service is lost.

## Syntax

```text
class SMPPDisconnectedEventParams(object):
  @property
  def status_code() -> int: ...

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

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

## Remarks

After sending an unbind operation to the server, this event will be fired containing the results of that operation. This event may also be fired if the socket connection to the service is lost.

If the event was fired because of an unbind operation, *status_code* will contain the command status set by the server. Otherwise, it will contain the socket code for the type of disconnection. For a status code value of *0*, *description* will contain *OK*. Otherwise, it will contain a standard interpretation of the value in *status_code*.

# on_error event

This event is fired when the server detects an error.

## Syntax

```text
class SMPPErrorEventParams(object):
  @property
  def error_code() -> int: ...

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

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

## Remarks

If the server sends an error not related to a command sent from the class, the class will fire an on_error event containing information related to the error.

*error_code* will contain the code sent by the server, and *description* will contain a standard interpretation of that code.

# on_message_in event

This event is fired upon receipt of a message.

## Syntax

```text
class SMPPMessageInEventParams(object):
  @property
  def source_address() -> str: ...

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

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

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

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

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

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

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

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

# In class SMPP:
@property
def on_message_in() -> Callable[[SMPPMessageInEventParams], None]: ...
@on_message_in.setter
def on_message_in(event_hook: Callable[[SMPPMessageInEventParams], None]) -> None: ...
```

## Remarks

When a message is received, the SMPP class will parse the sender's message into the *source_address*, *schedule_delivery_time*, *validity_period*, and *message* fields.

The *source_address* parameter is the address of the originator of the message.

The *destination_address* parameter holds the address of the recipient.

The *schedule_delivery_time* parameter is the delivery time at which the short message is scheduled to be forwarded to another Message Center (MC). This will be an empty string if it is not scheduled.

The *validity_period* parameter is applicable only if this short message is being forwarded to another MC. When this occurs, it specifies how long the receiving MC should retain the Short Message (SM) and continue trying to deliver it. This will be an empty string if the current validity period is unavailable.

The *message* parameter is the plaintext portion of the message body.

If the incoming message is a part of a larger message (the message was split up into several parts), the *message_part_count*, *message_part*, and *message_part_reference* parameters will be set. *message_part_count* will hold the total number of parts for the message. *message_part* will indicate the current part's location in the message to determine the order when reassembling the message. This will be a value from *1* to *message_part_count*. *message_part_reference* holds a reference value that will be the same across all parts for the message.

The *response_error_code* parameter may be set to return an error condition to the server. This corresponds to the command_status protocol-level field of the response.

# on_message_status event

This event is fired upon receipt of a message.

## Syntax

```text
class SMPPMessageStatusEventParams(object):
  @property
  def message_id() -> str: ...

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

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

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

# In class SMPP:
@property
def on_message_status() -> Callable[[SMPPMessageStatusEventParams], None]: ...
@on_message_status.setter
def on_message_status(event_hook: Callable[[SMPPMessageStatusEventParams], None]) -> None: ...
```

## Remarks

When a [check_message_status](#check_message_status-method) is called, the SMPP class will retrieve the status of the message represented by *message_id* from the server, parse the response, and fire on_message_status.

*message_state* represents the last known state the message was left in on the [smpp_server](#smpp_server-property). This code is version specific. For v3.4:

|  |  |
| --- | --- |
| 1 | ENROUTE, the message is en route. |
| 2 | DELIVERED, the message is delivered. |
| 3 | EXPIRED, the message validity period expired. |
| 4 | DELETED, the message has been deleted. |
| 5 | UNDELIVERABLE, the message is undeliverable. |
| 6 | ACCEPTED, the message has been read on behalf of subscriber by customer service. |
| 7 | UNKNOWN, the message is in an invalid state. |
| 8 | REJECTED, the message is in a rejected state. |

 For v5.0:

|  |  |
| --- | --- |
| 0 | SCHEDULED, the message is scheduled for delivery, but it has not yet been delivered. |
| 1 | ENROUTE, the message is en route. |
| 2 | DELIVERED, the message is delivered. |
| 3 | EXPIRED, the message validity period expired. |
| 4 | DELETED, the message has been deleted. |
| 5 | UNDELIVERABLE, the message is undeliverable. |
| 6 | ACCEPTED, the message has been read on behalf of subscriber by customer service. |
| 7 | UNKNOWN, the message is in an invalid state. |
| 8 | REJECTED, the message is in a rejected state. |
| 9 | SKIPPED, the message was accepted but not delivered. |

*message_error* will contain an error code representing any failure encountered during message delivery. This code may be vendor-specific.

*final_date* contains a human-readable string representing the date on which the message was delivered. If the message was not delivered, this parameter will be empty.

# on_pi_trail event

This event is fired once for each protocol data unit (PDU) sent between the client and server.

## Syntax

```text
class SMPPPITrailEventParams(object):
  @property
  def direction() -> int: ...

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

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

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

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

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

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

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

## Remarks

Whenever either the class or the [smpp_server](#smpp_server-property) sends any data across the connection, the class will fire a on_pi_trail event containing that data. It will usually be in SMPP-PDU format.

A PDU will contain at least the SMPP header, which is always 16 bytes long. The first four bytes represent the total length of the PDU, including the 16-byte header. The next four bytes are the command Id associated with the PDU. The command Id of a response PDU is always the command Id to which it is responding plus 0x80000000.

The class parses the values contained in the PDU header into the appropriate fields. The *command_length*, *command_id*, *command_status*, and *sequence_number* parameters contain these parsed values.

The third set of four bytes are the command status (status code) of the command. All originating commands will have a status code of 0x00000000, which will be ignored by the receiver. The field is only set in response PDUs to indicate the status of the originating command. The final four bytes represent the sequence number of the command. All response PDUs will contain the same sequence number as the originating command.

# on_ready_to_send event

This event is fired when the class is ready to send data.

## Syntax

```text
class SMPPReadyToSendEventParams(object):
# In class SMPP:
@property
def on_ready_to_send() -> Callable[[SMPPReadyToSendEventParams], None]: ...
@on_ready_to_send.setter
def on_ready_to_send(event_hook: Callable[[SMPPReadyToSendEventParams], None]) -> None: ...
```

## Remarks

The on_ready_to_send event indicates that the underlying Transmission Control Protocol (TCP)/IP subsystem is ready to accept data after a failed send_bytes. This event also is fired immediately after a connection to the remote host is established.

# on_ssl_server_authentication event

Fired after the server presents its certificate to the client.

## Syntax

```text
class SMPPSSLServerAuthenticationEventParams(object):
  @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 SMPP:
@property
def on_ssl_server_authentication() -> Callable[[SMPPSSLServerAuthenticationEventParams], None]: ...
@on_ssl_server_authentication.setter
def on_ssl_server_authentication(event_hook: Callable[[SMPPSSLServerAuthenticationEventParams], None]) -> None: ...
```

## Remarks

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

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

# on_ssl_status event

Fired when secure connection progress messages are available.

## Syntax

```text
class SMPPSSLStatusEventParams(object):
  @property
  def message() -> str: ...

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

## Remarks

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

# SMPP 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](#config-method) method.

### SMPP Config Settings

**AddressRange**: Specifies the addr_range parameter when binding.The addr_range parameter is used when binding as a receiver or transceiver to specify a set of short message entity (SME) addresses serviced by the external SME (ESME) client. A single SME address may be specified in the address_range parameter. UNIX Regular Expression notation should be used to specify a range of addresses. Messages addressed to any destination in this range shall be routed to the ESME.

**Note 1:** For IP addresses, it is only possible to specify a single IP address. A range of IP addresses is not allowed. IP version 6.0 is not currently supported in this version of the protocol.

**Note 2:** It is likely that the addr_range field is not supported or deliberately ignored on most Message Centers (MCs). Most carriers will not allow an ESME to control the message routing because this can carry the risk of incorrectly routing messages. In such circumstances, the ESME will be requested to set the field to NULL.

**BinaryDataCoding**: Whether or not to binary encode the message when DataCoding is set.By default, when the DataCoding configuration setting is used, the component will treat the message as binary. This configuration setting can be set to false to send the text user data instead.

**BindAsReceiver**: Causes the component to bind as a receiver. This configuration setting will instruct the component to bind to the SMPP service as a receiver instead of a transceiver.

**BindAsTransmitter**: Causes the component to bind as a transmitter. This configuration setting will instruct the component to bind to the SMPP service as a transmitter instead of a transceiver.

**CustomTLV**: Optional TLV parameters added after the mandatory parameters and before the payload.The format of the tag length value (TLV) parameter is as follows:

- One two-byte integer containing the parameter type (tag).
- One two-byte integer indicating the length of the data contained in this parameter.
- The variable-length parameter data itself.

 All of these values must be hex-encoded before setting the [CustomTLV](#CustomTLV) configuration setting.

For instance, to add a *gn_lookup_userdata* parameter, the type/tag is decimal **5633** (that's **0x1601** in hex), and the data in this example is **"Hello World"**, which is **11** characters in length. So the TLV is as follows: 5633 + 11 + "Hello World", or 0x16 0x01 0x00 0x0b and then the ASCII text "Hello World". When hex-encoded, this yields the string "1601000b48656c6c6f20576f726c64". This is the value you would then use to set the [CustomTLV](#CustomTLV) configuration setting. You are not restricted to only one optional parameter. Multiple TLV parameters may be concatenated together.

NOTE: This is advanced functionality, and the class does not verify the data in this configuration setting before transmission. After the class internally decodes the string back into binary, it is passed on inside the protocol data unit (PDU) as-is without validation or modification.

This configuration setting is applicable only when using the [send_message](#send_message-method) or [send_data](#send_data-method) methods.

**DataCoding**: The data encoding mechanism to be used for the current message. This configuration setting informs the message recipient about how data were encoded. The possible values are as follows:

|  |  |
| --- | --- |
| 0 | MC Specific encoding |
| 1 | IA5 (CCITT T.50)/ASCII (ANSI X3.4) |
| 2 | Octet unspecified (8-bit binary) |
| 3 | Latin 1 (ISO-8859-1) |
| 4 | Octet unspecified (8-bit binary) |
| 5 | JIS (X 0208-1990) |
| 6 | Cyrillic (ISO-8859-5) |
| 7 | Latin/Hebrew (ISO-8859-8) |
| 8 | UCS2 (ISO/IEC-10646) |
| 9 | Pictogram Encoding |
| 10 | ISO-2022-JP (Music Codes) |
| 11 | Reserved |
| 12 | Reserved 2 |
| 13 | Extended Kanji JIS (X 0212-1990) |
| 14 | KS C 5601 |

**DecodeHexStrings**: Will decode an ascii hex-representation of binary data prior to transmission.When this configuration setting is True, data sent in the [send_command](#send_command-method) method's *Payload* parameter, [send_data](#send_data-method) method's *Data* parameter, or [send_message](#send_message-method) method's *Message* parameter will be treated as an ASCII hex-representation of binary data, and will be decoded into raw binary before transmission. For instance, the string "48656C6C6F20576F726C64" will be decoded to "Hello World" when this configuration setting is True. If the string passed to the method parameter is not correctly hex-encoded, the class will transmit unexpected results. This setting is False by default.

**DestinationNPI**: The Number Planning Indicator for the destination ESME. When sending messages, this configuration setting is used to indicate the numbering plan the destination ESME. For a list of possible values, please see [SourceNPI](#SourceNPI).

**DestinationTON**: The Type of Number for the destination ESME. When sending messages, this configuration setting is used to indicate the Type of Number for the destination ESME. For a list of possible values, please see [SourceTON](#SourceTON).

**DoSplitLargeMessages**: Splits long messages and returns the UDH and Message Parts. This configuration setting accepts a string that will be the long message to be split into parts. The user data header (UDH) and Message Parts will be returned in hex, in the following format:

```text
[UDH1],[MessagePart1];[UDH2],[MessagePart2];[UDH3],[MessagePart3]
```

**HexString**: A hex-encoded binary string to be sent to the current recipient. When set, this configuration setting will cause the component to internally call [send_message](#send_message-method) with the binary contents of the hex-encoded string. The return value when setting this property is the server-assigned Id of the message. Querying this property will result in an empty string.

NOTE: When using [HexString](#HexString), [DataCoding](#DataCoding) must be set to 8, and the value provided to this configuration setting should be the UTF-16 hex-encoded message.

**IncomingDestinationAddress**: Returns the dest_addr field inside the received message.This configuration setting is read-only, and it is valid only inside the [on_message_in](#on_message_in-event) event.

**IntermediateNotification**: Causes the component to request intermediate notification. This configuration setting will request intermediate notification. By default, intermediate notification is not requested.

**MaxCIMDSMSLength**: Indicates the maximum SMS message length for the CIMD protocol. This configuration setting is applicable only when [SplitLargeMessages](#SplitLargeMessages) is True and [protocol](#protocol-property) is set to CIMD2. The configuration setting controls the maximum size of SMS messages before they are split and has a default value of 160.

**MaxSMSLength**: Indicates the maximum SMS message length. This configuration setting is applicable only when [SplitLargeMessages](#SplitLargeMessages) is True. The setting controls the maximum size of SMS messages before they are split and has a default value of 140.

**MCReceipt**: The Type of MC Delivery Receipt requested. When sending a message, this configuration setting is used to determine whether or not an MC delivery receipt is requested. This value is *0* by default, and no receipt is requested. The possible values are as follows:

|  |  |
| --- | --- |
| 0 | No MC Delivery Receipt requested (default). |
| 1 | MC Delivery Receipt is requested after final delivery (success or failure). |
| 2 | MC Delivery Receipt is requested after a failed delivery. |
| 3 | MC Delivery Receipt is requested after a successful delivery. |

**MessageInReceiptedMessageId**: The receipted_message_id field of an incoming deliver_sm PDU. This configuration setting indicates the Id of the message being receipted in an MC delivery receipt.

NOTE: This is applicable only within the [on_message_in](#on_message_in-event) event.

**MessageMode**: The Type of Messaging Mode requested. When sending a message, this configuration setting is used to specify the Messaging Mode in the outgoing request. For incoming messages, this value can be queried from within the [on_message_in](#on_message_in-event) event. The possible values are as follows:

|  |  |
| --- | --- |
| 0 | Default SMSC Mode (e.g., Store and Forward). |
| 1 | Datagram mode. |
| 2 | Forward (i.e., Transaction) mode. |
| 3 | Store and Forward mode. |

**MessageType**: The Type of Message. When sending a message, this configuration setting is used to specify the Message Type in the outgoing request. For incoming messages, this value can be queried from within the [on_message_in](#on_message_in-event) event. The possible values are as follows:

|  |  |
| --- | --- |
| 0 | Default message Type (i.e., normal message). |
| 1 | Short Message contains MC Delivery Receipt. |
| 2 | Short Message contains Intermediate Delivery Notification. |

**PDUFormat**: The format of the PDU. Decides the format of the PDU parameter when decoding a PDU for the [on_pi_trail](#on_pi_trail-event) event. When set to Hex (1), the PDU will be encoded as a hex string. When set to Verbose (2) the PDU will be a longer hex dump.

|  |  |
| --- | --- |
| 0 | Raw (Default) |
| 1 | Hex string |
| 2 | Verbose |

**ProtocolId**: The protocol identifier. This configuration setting allows control of the protocol identifier field value used in the outgoing messages.

**ReplaceIfPresent**: Indicates whether the replace_if_present_flag is enabled when sending a message.This configuration indicates whether the replace_if_present_flag is enabled when sending a message. By default, this value is *False*, and the flag is disabled. When enabled (*True*), this indicates to the SMSC that the user wishes to replace a previously submitted message that is still pending delivery. If the previous message is still pending delivery, the new message will replace it. If the previous message has already been delivered or does not exist, the new message will also be delivered.

**SMEAcknowledgement**: The Type of SME originated acknowledgment requested. When sending a message, this configuration setting is used to determine whether or not an SME acknowledgment is requested. This value is *0* by default, and no acknowledgment is requested. The possible values are as follows:

|  |  |
| --- | --- |
| 0 | No SME acknowledgment requested (default). |
| 1 | SME delivery acknowledgment is requested. |
| 2 | SME manual/user acknowledgment is requested. |
| 3 | Both delivery and manual/user acknowledgment is requested. |

**SourceNPI**: The Number Planning Indicator for the ESME. When binding, this configuration setting is used to specify the numbering plan of the ESME. Mobiles tend to set this value to *1*. Because most ESMEs are mobiles, the default value for [SourceNPI](#SourceNPI) is *1*. The possible value are as follows:

|  |  |
| --- | --- |
| Unknown (0) |  |
| ISDN (1) |  |
| Data (3) |  |
| Telex (4) |  |
| LandMobile (6) |  |
| National (8) |  |
| Private (9) |  |
| ERMES (10) |  |
| Internet (14) |  |
| WAP (18) |  |

**SourceTON**: The Type of Number for the ESME. When binding, this configuration setting is used to indicate the Type of Number for the ESME address. The possible values are as follows:

|  |  |
| --- | --- |
| Unknown (0) | The number type is unknown |
| International (1) | The number includes the international trunk prefix |
| National (2) | The number includes the national trunk prefix |
| NetworkSpecific (3) | The number exists on a network that uses a specific delivery protocol |
| SubscriberNumber (4) | The number is just the subscriber number, without prefixes |
| Alphanumeric (5) | The address is human-readable (contains letters and digits) |
| Abbreviated (6) | The number is abbreviated |

**SplitLargeMessages**: Determines whether large messages are split into multiple parts.The default value is False. If set to true and the message is larger than [MaxSMSLength](#MaxSMSLength) (or [MaxCIMDSMSLength](#MaxCIMDSMSLength)), the message will automatically be split into parts when [send_message](#send_message-method) is called.

NOTE: This is valid only for GSM networks.

When receiving a message that has been split, the [on_message_in](#on_message_in-event) event provides parameters to reassemble the message.

**SplitMessageMethod**: Determines how large messages are split into multiple parts.The component can split large messages using either the UDH or segmentation and reassembly (SAR) method. The mode used is determined by this configuration setting. The possible values are as follows:

|  |  |
| --- | --- |
| 0 | UDH (Default) |
| 1 | SAR |

**StatusReportRequest**: Defines in what cases a status report is created by the server.This configuration setting is applicable only when [protocol](#protocol-property) is set to *smppCIMD2*. This may be set to request that the server create a status report for the given conditions. The assigned value should be the sum of all desired conditions. For instance, a value of 62 means that a report should be created for all events except for a temporary error. Possible flags are as follows:

|  |  |
| --- | --- |
| 1 | Temporary Error |
| 2 | Validity Period Expired |
| 4 | Delivery Failed |
| 8 | Delivery Successful |
| 16 | Message Canceled |
| 32 | Message Deleted By The Operator |

**SubAddr**: Defines a unique index for application instance.This configuration setting is useful for correct delivery of status reports when multiple instances of the same application are connected.

This configuration setting is applicable only when [protocol](#protocol-property) is set to *smppCIMD2*.

**SynchronousSendCommand**: Controls whether SendCommand behaves synchronously or asynchronously. The default value is True, which means [send_command](#send_command-method) will not return until a response has been received. If set to False, the class returns and does not wait for a response from the server.

**SynchronousSendMessage**: Controls whether SendMessage behaves synchronously or asynchronously. The default value is True, which means [send_message](#send_message-method) will not return until a response has been received. If set to False, the class returns the sequence number used and does not wait for a response from the server. You may then monitor the [on_pi_trail](#on_pi_trail-event) event to match the response from the server to the sent message.

**UseGSM7BitEncoding**: Whether or not to use GSM 7-bit encoding.When set to True (False by default), this will instruct the component to use 7-bit GSM encoding.

**UseGSM7bitEncodingCompression**: Whether to compress GSM 7-bit encoded characters.When set to True (True by default), the component will compress GSM 7-bit encoded characters. Some devices do not support compression. Setting this to False may allow them to be displayed.

This configuration setting applies only when [UseGSM7BitEncoding](#UseGSM7BitEncoding) is True.

**WaitForBanner**: Specifies the CIMD2 banner the class will wait for when connecting.This configuration setting is applicable only when [protocol](#protocol-property) is set to *smppCIMD2*. If set, the class will wait for a banner containing this string to be returned by the server before proceeding with the connection.

### TCPClient Config Settings

**ConnectionTimeout**: Sets a separate timeout value for establishing a connection.When set, this configuration setting allows you to specify a different timeout value for establishing a connection. Otherwise, the class will use [timeout](#timeout-property) for establishing a connection and transmitting/receiving data.

**FirewallAutoDetect**: Tells the class whether or not to automatically detect and use firewall system settings, if available.This configuration setting is provided for use by classes that do not directly expose Firewall properties.

**FirewallHost**: Name or IP address of firewall (optional).If a [FirewallHost](#FirewallHost) is given, requested connections will be authenticated through the specified firewall when connecting.

If the [FirewallHost](#FirewallHost) setting is set to a Domain Name, a DNS request is initiated. Upon successful termination of the request, the [FirewallHost](#FirewallHost) setting is set to the corresponding address. If the search is not successful, an error is returned.

NOTE: This setting is provided for use by classes that do not directly expose Firewall properties.

**FirewallHTTPVersion**: The HTTP version to be used when connecting through a tunneling proxy.When [FirewallType](#FirewallType) is set to a tunneling proxy, this setting dictates which HTTP version is used when connecting.

**FirewallPassword**: Password to be used if authentication is to be used when connecting through the firewall.If [FirewallHost](#FirewallHost) is specified, the [FirewallUser](#FirewallUser) and [FirewallPassword](#FirewallPassword) settings are used to connect and authenticate to the given firewall. If the authentication fails, the class fails with an error.

NOTE: This setting is provided for use by classes that do not directly expose Firewall properties.

**FirewallPort**: The TCP port for the FirewallHost;.The [FirewallPort](#FirewallPort) is set automatically when [FirewallType](#FirewallType) is set to a valid value.

NOTE: This configuration setting is provided for use by classes that do not directly expose Firewall properties.

**FirewallType**: Determines the type of firewall to connect through.Possible values are as follows:

|  |  |
| --- | --- |
| 0 | No firewall (default setting). |
| 1 | Connect through a tunneling proxy. [FirewallPort](#FirewallPort) is set to 80. |
| 2 | Connect through a SOCKS4 Proxy. [FirewallPort](#FirewallPort) is set to 1080. |
| 3 | Connect through a SOCKS5 Proxy. [FirewallPort](#FirewallPort) is set to 1080. |
| 10 | Connect through a SOCKS4A Proxy. [FirewallPort](#FirewallPort) is set to 1080. |

NOTE: This setting is provided for use by classes that do not directly expose Firewall properties.

**FirewallUser**: A user name if authentication is to be used connecting through a firewall.If the [FirewallHost](#FirewallHost) is specified, the [FirewallUser](#FirewallUser) and [FirewallPassword](#FirewallPassword) settings are used to connect and authenticate to the Firewall. If the authentication fails, the class fails with an error.

NOTE: This setting is provided for use by classes that do not directly expose Firewall properties.

**KeepAliveInterval**: The retry interval, in milliseconds, to be used when a TCP keep-alive packet is sent and no response is received.When set, [TCPKeepAlive](#TCPKeepAlive) will automatically be set to True. A TCP keep-alive packet will be sent after a period of inactivity as defined by [KeepAliveTime](#KeepAliveTime). If no acknowledgment is received from the remote host, the keep-alive packet will be sent again. This configuration setting specifies the interval at which the successive keep-alive packets are sent in milliseconds. This system default if this value is not specified here is 1 second.

NOTE: This value is not applicable in macOS.

**KeepAliveTime**: The inactivity time in milliseconds before a TCP keep-alive packet is sent.When set, [TCPKeepAlive](#TCPKeepAlive) will automatically be set to True. By default, the operating system will determine the time a connection is idle before a Transmission Control Protocol (TCP) keep-alive packet is sent. This system default if this value is not specified here is 2 hours. In many cases, a shorter interval is more useful. Set this value to the desired interval in milliseconds.

**Linger**: When set to True, connections are terminated gracefully.This property controls how a connection is closed. The default is True.

In the case that Linger is True (default), two scenarios determine how long the connection will linger. In the first, if [LingerTime](#LingerTime) is 0 (default), the system will attempt to send pending data for a connection until the default IP timeout expires.

In the second scenario, if [LingerTime](#LingerTime) is a positive value, the system will attempt to send pending data until the specified [LingerTime](#LingerTime) is reached. If this attempt fails, then the system will reset the connection.

The default behavior (which is also the default mode for stream sockets) might result in a long delay in closing the connection. Although the class returns control immediately, the system could hold system resources until all pending data are sent (even after your application closes).

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

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

**LocalHost**: The name of the local host through which connections are initiated or accepted. The [local_host](#local_host-property) setting contains the name of the local host as obtained by the *gethostname()* system call, or if the user has assigned an IP address, the value of that address.

In multihomed hosts (machines with more than one IP interface), setting LocalHost to the value of an interface will make the class initiate connections (or accept in the case of server classes) only through that interface.

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

**LocalPort**: The port in the local host where the class binds. This configuration setting must be set before a connection is attempted. It instructs the class to bind to a specific port (or communication endpoint) in the local machine.

Setting this to 0 (default) enables the system to choose a port at random. The chosen port will be shown by local_port after the connection is established.

local_port cannot be changed once a connection is made. Any attempt to set this when a connection is active will generate an error.

This configuration setting is useful when trying to connect to services that require a trusted port on the client side. An example is the remote shell (rsh) service in UNIX systems.

**MaxLineLength**: The maximum amount of data to accumulate when no EOL is found.[MaxLineLength](#MaxLineLength) is the size of an internal buffer, which holds received data while waiting for an eol string.

If an eol string is found in the input stream before [MaxLineLength](#MaxLineLength) bytes are received, the on_data_in event is fired with the *EOL* parameter set to True, and the buffer is reset.

If no eol is found, and [MaxLineLength](#MaxLineLength) bytes are accumulated in the buffer, the on_data_in event is fired with the *EOL* parameter set to False, and the buffer is reset.

The minimum value for [MaxLineLength](#MaxLineLength) is 256 bytes. The default value is 2048 bytes.

**MaxTransferRate**: The transfer rate limit in bytes per second.This configuration setting can be used to throttle outbound TCP traffic. Set this to the number of bytes to be sent per second. By default, this is not set and there is no limit.

**ProxyExceptionsList**: A semicolon separated list of hosts and IPs to bypass when using a proxy.This configuration setting optionally specifies a semicolon-separated list of hostnames or IP addresses to bypass when a proxy is in use. When requests are made to hosts specified in this property, the proxy will not be used. For instance:

*www.google.com;www.example.com*

**TCPKeepAlive**: Determines whether or not the keep alive socket option is enabled.If set to True, the socket's keep-alive option is enabled and keep-alive packets will be sent periodically to maintain the connection. Set [KeepAliveTime](#KeepAliveTime) and [KeepAliveInterval](#KeepAliveInterval) to configure the timing of the keep-alive packets.

NOTE: This value is not applicable in Java.

**TcpNoDelay**: Whether or not to delay when sending packets. When set to True, the socket will send all data that are ready to send at once. When set to False, the socket will send smaller buffered packets of data at small intervals. This is known as the Nagle algorithm.

By default, this configuration setting is set to False.

**UseIPv6**: Whether to use IPv6.When set to *0* (default), the class will use IPv4 exclusively. When set to *1*, the class will use IPv6 exclusively. To instruct the class to prefer IPv6 addresses, but use IPv4 if IPv6 is not supported on the system, this setting should be set to *2*. The default value is *0*. Possible values are as follows:

|  |  |
| --- | --- |
| 0 | IPv4 only |
| 1 | IPv6 only |
| 2 | IPv6 with IPv4 fallback |

**UseNTLMv2**: Whether to use NTLM V2.When authenticating with NTLM, this setting specifies whether NTLM V2 is used. By default this value is True and NTLM V2 will be used. Set this to False to use NTLM V1.

### SSL Config Settings

**LogSSLPackets**: Controls whether SSL packets are logged when using the internal security API.When [ssl_provider](#ssl_provider-property) is set to *Internal*, this configuration setting controls whether Secure Sockets Layer (SSL) packets should be logged. By default, this configuration setting is *False*, as it is useful only for debugging purposes.

When enabled, SSL packet logs are output using the [on_ssl_status](#on_ssl_status-event) event, which will fire each time an SSL packet is sent or received.

Enabling this configuration setting has no effect if [ssl_provider](#ssl_provider-property) is set to *Platform*.

**OpenSSLCADir**: The path to a directory containing CA certificates.This functionality is available only when the provider is OpenSSL.

The path set by this property should point to a directory containing CA certificates in PEM format. The files each contain one CA certificate. The files are looked up by the CA subject name hash value, which must hence be available. If more than one CA certificate with the same name hash value exist, the extension must be different (e.g., 9d66eef0.0, 9d66eef0.1). OpenSSL recommends the use of the c_rehash utility to create the necessary links. Please refer to the OpenSSL man page SSL_CTX_load_verify_locations(3) for details.

**OpenSSLCAFile**: Name of the file containing the list of CA's trusted by your application.This functionality is available only when the provider is OpenSSL.

The file set by this property should contain a list of CA certificates in PEM format. The file can contain several CA certificates identified by the following sequences:

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

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

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

 Before, between, and after the certificate text is allowed, which can be used, for example, for descriptions of the certificates. Refer to the OpenSSL man page SSL_CTX_load_verify_locations(3) for details.

**OpenSSLCipherList**: A string that controls the ciphers to be used by SSL.This functionality is available only when the provider is OpenSSL.

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

**OpenSSLPrngSeedData**: The data to seed the pseudo random number generator (PRNG).This functionality is available only when the provider is OpenSSL.

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

**ReuseSSLSession**: Determines if the SSL session is reused.

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

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

**SSLCACertFilePaths**: The paths to CA certificate files on Unix/Linux.This configuration setting specifies the paths on disk to CA certificate files on Unix/Linux.

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

The default value is as follows:

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

**SSLCACerts**: A newline separated list of CA certificates to be included when performing an SSL handshake.When [ssl_provider](#ssl_provider-property) is set to *Internal*, this configuration setting specifies one or more CA certificates to be included with the ssl_cert property. Some servers or clients require the entire chain, including CA certificates, to be presented when performing SSL authentication. The value of this configuration setting is a newline-separated (CR/LF) list of certificates. For instance:

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

**SSLCheckCRL**: Whether to check the Certificate Revocation List for the server certificate.This configuration setting specifies whether the class will check the Certificate Revocation List (CRL) 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 it will continue without an error if the server's certificate does not support CRL. When set to 2, it will perform the CRL check and will throw an error if CRL is not supported.

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

**SSLCheckOCSP**: Whether to use OCSP to check the status of the server certificate.This configuration setting specifies whether the class will use OCSP to check the validity of the server certificate. If set to 1 or 2, the class will first obtain the Online Certificate Status Protocol (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 it will continue without an error if the server's certificate does not support OCSP. When set to 2, it will perform the OCSP check and will throw an error if OCSP is not supported.

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

**SSLCipherStrength**: The minimum cipher strength used for bulk encryption. This minimum cipher strength is largely dependent on the security modules installed on the system. If the cipher strength specified is not supported, an error will be returned when connections are initiated.

NOTE: This configuration setting contains the minimum cipher strength requested from the security library. The actual cipher strength used for the connection is shown by the [on_ssl_status](#on_ssl_status-event) event.

Use this configuration setting with caution. Requesting a lower cipher strength than necessary could potentially cause serious security vulnerabilities in your application.

When the provider is OpenSSL, [SSLCipherStrength](#SSLCipherStrength) is currently not supported. This functionality is instead made available through the [OpenSSLCipherList](#OpenSSLCipherList) configuration setting.

**SSLClientCACerts**: A newline separated list of CA certificates to use during SSL client certificate validation.This configuration setting is only applicable to server components (e.g., TCPServer) see [SSLServerCACerts](#SSLServerCACerts) for client components (e.g., TCPClient). This setting can be used to optionally specify one or more CA certificates to be used when verifying the client certificate that is presented by the client during the SSL handshake when ssl_authenticate_clients is enabled. When verifying the client's certificate, the certificates trusted by the system will be used as part of the verification process. If the client's CA certificates are not installed to the trusted system store, they may be specified here so they are included when performing the verification process. This configuration setting should be set only if the client's CA certificates are not already trusted on the system and cannot be installed to the trusted system store.

The value of this configuration setting is a newline-separated (CR/LF) list of certificates. For instance:

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

**SSLEnabledCipherSuites**: The cipher suite to be used in an SSL negotiation.This configuration setting enables the cipher suites to be used in SSL negotiation.

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

The special value "*" means that the class will pick all of the supported cipher suites. If [SSLEnabledCipherSuites](#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](#ssl_provider-property) is set to *Platform* include the following:

```text
obj.config("SSLEnabledCipherSuites=*");
obj.config("SSLEnabledCipherSuites=CALG_AES_256");
obj.config("SSLEnabledCipherSuites=CALG_AES_256;CALG_3DES");
```

 Possible values when [ssl_provider](#ssl_provider-property) is set to *Platform* include the following:

- CALG_3DES
- CALG_3DES_112
- CALG_AES
- CALG_AES_128
- CALG_AES_192
- CALG_AES_256
- CALG_AGREEDKEY_ANY
- CALG_CYLINK_MEK
- CALG_DES
- CALG_DESX
- CALG_DH_EPHEM
- CALG_DH_SF
- CALG_DSS_SIGN
- CALG_ECDH
- CALG_ECDH_EPHEM
- CALG_ECDSA
- CALG_ECMQV
- CALG_HASH_REPLACE_OWF
- CALG_HUGHES_MD5
- CALG_HMAC
- CALG_KEA_KEYX
- CALG_MAC
- CALG_MD2
- CALG_MD4
- CALG_MD5
- CALG_NO_SIGN
- CALG_OID_INFO_CNG_ONLY
- CALG_OID_INFO_PARAMETERS
- CALG_PCT1_MASTER
- CALG_RC2
- CALG_RC4
- CALG_RC5
- CALG_RSA_KEYX
- CALG_RSA_SIGN
- CALG_SCHANNEL_ENC_KEY
- CALG_SCHANNEL_MAC_KEY
- CALG_SCHANNEL_MASTER_HASH
- CALG_SEAL
- CALG_SHA
- CALG_SHA1
- CALG_SHA_256
- CALG_SHA_384
- CALG_SHA_512
- CALG_SKIPJACK
- CALG_SSL2_MASTER
- CALG_SSL3_MASTER
- CALG_SSL3_SHAMD5
- CALG_TEK
- CALG_TLS1_MASTER
- CALG_TLS1PRF

 Example values when [ssl_provider](#ssl_provider-property) is set to *Internal*include the following:

```text
obj.config("SSLEnabledCipherSuites=*");
obj.config("SSLEnabledCipherSuites=TLS_DHE_DSS_WITH_AES_128_CBC_SHA");
obj.config("SSLEnabledCipherSuites=TLS_DHE_DSS_WITH_AES_128_CBC_SHA;TLS_ECDH_RSA_WITH_AES_128_CBC_SHA");
```

 Possible values when [ssl_provider](#ssl_provider-property) is set to *Internal* include the following:

- TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384
- TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
- TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
- TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
- TLS_ECDH_ECDSA_WITH_AES_256_GCM_SHA384
- TLS_RSA_WITH_AES_256_GCM_SHA384
- TLS_RSA_WITH_AES_128_GCM_SHA256
- TLS_ECDH_ECDSA_WITH_AES_128_GCM_SHA256
- TLS_DHE_DSS_WITH_AES_256_GCM_SHA384
- TLS_DHE_RSA_WITH_AES_256_GCM_SHA384
- TLS_ECDH_RSA_WITH_AES_256_GCM_SHA384
- TLS_ECDH_RSA_WITH_AES_128_GCM_SHA256
- TLS_DHE_RSA_WITH_AES_128_GCM_SHA256
- TLS_DHE_DSS_WITH_AES_128_GCM_SHA256
- TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384
- TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256
- TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA384
- TLS_DHE_DSS_WITH_AES_256_CBC_SHA256
- TLS_RSA_WITH_AES_256_CBC_SHA256
- TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
- TLS_ECDH_RSA_WITH_AES_256_CBC_SHA384
- TLS_DHE_RSA_WITH_AES_256_CBC_SHA256
- TLS_DHE_RSA_WITH_AES_128_CBC_SHA256
- TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
- TLS_RSA_WITH_AES_128_CBC_SHA256
- TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA256
- TLS_ECDH_RSA_WITH_AES_128_CBC_SHA256
- TLS_DHE_DSS_WITH_AES_128_CBC_SHA256
- TLS_RSA_WITH_AES_256_CBC_SHA
- TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA
- TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
- TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA
- TLS_DHE_RSA_WITH_AES_256_CBC_SHA
- TLS_ECDH_RSA_WITH_AES_256_CBC_SHA
- TLS_DHE_DSS_WITH_AES_256_CBC_SHA
- TLS_RSA_WITH_AES_128_CBC_SHA
- TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
- TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA
- TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA
- TLS_ECDH_RSA_WITH_AES_128_CBC_SHA
- TLS_DHE_RSA_WITH_AES_128_CBC_SHA
- TLS_DHE_DSS_WITH_AES_128_CBC_SHA
- TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA
- TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA
- TLS_ECDH_ECDSA_WITH_3DES_EDE_CBC_SHA
- TLS_ECDH_RSA_WITH_3DES_EDE_CBC_SHA
- TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA
- TLS_DHE_DSS_WITH_3DES_EDE_CBC_SHA
- TLS_RSA_WITH_3DES_EDE_CBC_SHA
- TLS_RSA_WITH_DES_CBC_SHA
- TLS_DHE_RSA_WITH_DES_CBC_SHA
- TLS_DHE_DSS_WITH_DES_CBC_SHA
- TLS_RSA_WITH_RC4_128_MD5
- TLS_RSA_WITH_RC4_128_SHA

When TLS 1.3 is negotiated (see [SSLEnabledProtocols](#SSLEnabledProtocols)), only the following cipher suites are supported:

- TLS_AES_256_GCM_SHA384
- TLS_CHACHA20_POLY1305_SHA256
- TLS_AES_128_GCM_SHA256

[SSLEnabledCipherSuites](#SSLEnabledCipherSuites) is used together with [SSLCipherStrength](#SSLCipherStrength).

**SSLEnabledProtocols**: Used to enable/disable the supported security protocols.This configuration setting is used to enable or disable the supported security protocols.

Not all supported protocols are enabled by default. The default value is *4032* for client components, and *3072* for server components. To specify a combination of enabled protocol versions set this config to the binary *OR* of one or more of the following values:

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

Note that only TLS 1.2 is enabled for server components that accept incoming connections. This adheres to industry standards to ensure a secure connection. Client components enable TLS 1.0, TLS 1.1, and TLS 1.2 by default and will negotiate the highest mutually supported version when connecting to a server, which should be TLS 1.2 in most cases.

**SSLEnabledProtocols: Transport Layer Security (TLS) 1.3 Notes:**

By default when TLS 1.3 is enabled, the class will first try to use the platform TLS 1.3 implementation when the [ssl_provider](#ssl_provider-property) is set to Automatic for all editions. If the platform TLS 1.3 implementation is not available, the internal implementation will be used.

In editions that are designed to run on Windows, [ssl_provider](#ssl_provider-property) can be set to Platform to use the platform implementation instead of the internal implementation. When configured in this manner, please note that the platform provider is supported only on Windows 11/Windows Server 2022 and up. The default internal provider is available on all platforms and is not restricted to any specific OS version.

If set to *1* (Platform provider), please be aware of the following notes:

- The platform provider is available only on Windows 11/Windows Server 2022 and up.
- [SSLEnabledCipherSuites](#SSLEnabledCipherSuites) and other similar SSL configuration settings are not supported.
- If [SSLEnabledProtocols](#SSLEnabledProtocols) includes both TLS 1.3 and TLS 1.2, these restrictions are still applicable even if TLS 1.2 is negotiated. Enabling TLS 1.3 with the platform provider changes the implementation used for all TLS versions.

**SSLEnabledProtocols: SSL2 and SSL3 Notes: **

SSL 2.0 and 3.0 are not supported by the class when the [ssl_provider](#ssl_provider-property) is set to internal. To use SSL 2.0 or SSL 3.0, the platform security API must have the protocols enabled and [ssl_provider](#ssl_provider-property) needs to be set to platform.

**SSLEnableRenegotiation**: Whether the renegotiation_info SSL extension is supported.This configuration setting specifies whether the renegotiation_info SSL extension will be used in the request when using the internal security API. This configuration setting is *False* by default, but it can be set to *True* to enable the extension.

This configuration setting is applicable only when [ssl_provider](#ssl_provider-property) is set to *Internal*.

**SSLIncludeCertChain**: Whether the entire certificate chain is included in the SSLServerAuthentication event.This configuration setting specifies whether the Encoded parameter of the [on_ssl_server_authentication](#on_ssl_server_authentication-event) 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](#on_ssl_server_authentication-event) event.

If set to True, all certificates returned by the server will be present in the Encoded parameter of the [on_ssl_server_authentication](#on_ssl_server_authentication-event) event. This includes the leaf certificate, any intermediate certificate, and the root certificate.

**SSLKeyLogFile**: The location of a file where per-session secrets are written for debugging purposes.This configuration setting optionally specifies the full path to a file on disk where per-session secrets are stored for debugging purposes.

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

NOTE: This configuration setting is applicable only when [ssl_provider](#ssl_provider-property) is set to *Internal*.

**SSLNegotiatedCipher**: Returns the negotiated cipher suite.This configuration setting returns the cipher suite negotiated during the SSL handshake.

NOTE: For server components (e.g., TCPServer), this is a per-connection configuration setting accessed by passing the ConnectionId. For example:

```csharp
server.Config("SSLNegotiatedCipher[connId]");
```

**SSLNegotiatedCipherStrength**: Returns the negotiated cipher suite strength.This configuration setting returns the strength of the cipher suite negotiated during the SSL handshake.

NOTE: For server components (e.g., TCPServer), this is a per-connection configuration setting accessed by passing the ConnectionId. For example:

```csharp
server.Config("SSLNegotiatedCipherStrength[connId]");
```

**SSLNegotiatedCipherSuite**: Returns the negotiated cipher suite.This configuration setting returns the cipher suite negotiated during the SSL handshake represented as a single string.

NOTE: For server components (e.g., TCPServer), this is a per-connection configuration setting accessed by passing the ConnectionId. For example:

```csharp
server.Config("SSLNegotiatedCipherSuite[connId]");
```

**SSLNegotiatedKeyExchange**: Returns the negotiated key exchange algorithm.This configuration setting returns the key exchange algorithm negotiated during the SSL handshake.

NOTE: For server components (e.g., TCPServer), this is a per-connection configuration setting accessed by passing the ConnectionId. For example:

```csharp
server.Config("SSLNegotiatedKeyExchange[connId]");
```

**SSLNegotiatedKeyExchangeStrength**: Returns the negotiated key exchange algorithm strength.This configuration setting returns the strength of the key exchange algorithm negotiated during the SSL handshake.

NOTE: For server components (e.g., TCPServer), this is a per-connection configuration setting accessed by passing the ConnectionId. For example:

```csharp
server.Config("SSLNegotiatedKeyExchangeStrength[connId]");
```

**SSLNegotiatedVersion**: Returns the negotiated protocol version.This configuration setting returns the protocol version negotiated during the SSL handshake.

NOTE: For server components (e.g., TCPServer), this is a per-connection configuration setting accessed by passing the ConnectionId. For example:

```csharp
server.Config("SSLNegotiatedVersion[connId]");
```

**SSLSecurityFlags**: Flags that control certificate verification.The following flags are defined (specified in hexadecimal notation). They can be ORed together to exclude multiple conditions:

|  |  |
| --- | --- |
| 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 non-matching server name). |

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

**SSLServerCACerts**: A newline separated list of CA certificates to use during SSL server certificate validation.This configuration setting is only used by client components (e.g., TCPClient) see [SSLClientCACerts](#SSLClientCACerts) for server components (e.g., TCPServer). This configuration setting can be used to optionally specify one or more CA certificates to be used when connecting to the server and verifying the server certificate. When verifying the server's certificate, the certificates trusted by the system will be used as part of the verification process. If the server's CA certificates are not installed to the trusted system store, they may be specified here so they are included when performing the verification process. This configuration setting should be set only if the server's CA certificates are not already trusted on the system and cannot be installed to the trusted system store.

The value of this configuration setting is a newline-separated (CR/LF) list of certificates. For instance:

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

**TLS12SignatureAlgorithms**: Defines the allowed TLS 1.2 signature algorithms when SSLProvider is set to Internal.This configuration setting specifies the allowed server certificate signature algorithms when [ssl_provider](#ssl_provider-property) is set to *Internal* and [SSLEnabledProtocols](#SSLEnabledProtocols) is set to allow TLS 1.2.

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

The format of this value is a comma-separated list of hash-signature combinations. For instance:

```csharp
component.SSLProvider = TCPClientSSLProviders.sslpInternal;
component.Config("SSLEnabledProtocols=3072"); //TLS 1.2
component.Config("TLS12SignatureAlgorithms=sha256-rsa,sha256-dsa,sha1-rsa,sha1-dsa");
```

 The default value for this configuration setting is *sha512-ecdsa,sha512-rsa,sha512-dsa,sha384-ecdsa,sha384-rsa,sha384-dsa,sha256-ecdsa,sha256-rsa,sha256-dsa,sha224-ecdsa,sha224-rsa,sha224-dsa,sha1-ecdsa,sha1-rsa,sha1-dsa*.

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

**TLS12SupportedGroups**: The supported groups for ECC.This configuration setting specifies a comma-separated list of named groups used in TLS 1.2 for ECC.

The default value is *ecdhe_secp256r1,ecdhe_secp384r1,ecdhe_secp521r1*.

When using TLS 1.2 and [ssl_provider](#ssl_provider-property) is set to *Internal*, the values refer to the supported groups for ECC. The following values are supported:

- "ecdhe_secp256r1" (default)
- "ecdhe_secp384r1" (default)
- "ecdhe_secp521r1" (default)

**TLS13KeyShareGroups**: The groups for which to pregenerate key shares.This configuration setting specifies a comma-separated list of named groups used in TLS 1.3 for key exchange. The groups specified here will have key share data pregenerated locally before establishing a connection. This can prevent an additional roundtrip during the handshake if the group is supported by the server.

The default value is set to balance common supported groups and the computational resources required to generate key shares. As a result, only some groups are included by default in this configuration setting.

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

In most cases, this configuration setting does not need to be modified. This should be modified only if there is a specific reason to do so.

The default value is *ecdhe_x25519,ecdhe_secp256r1,ecdhe_secp384r1,ffdhe_2048,ffdhe_3072*

The values are ordered from most preferred to least preferred. The following values are supported:

- "ecdhe_x25519" (default)
- "ecdhe_x448"
- "ecdhe_secp256r1" (default)
- "ecdhe_secp384r1" (default)
- "ecdhe_secp521r1"
- "ffdhe_2048" (default)
- "ffdhe_3072" (default)
- "ffdhe_4096"
- "ffdhe_6144"
- "ffdhe_8192"

**TLS13SignatureAlgorithms**: The allowed certificate signature algorithms.This configuration setting holds a comma-separated list of allowed signature algorithms. Possible values include the following:

- "ed25519" (default)
- "ed448" (default)
- "ecdsa_secp256r1_sha256" (default)
- "ecdsa_secp384r1_sha384" (default)
- "ecdsa_secp521r1_sha512" (default)
- "rsa_pkcs1_sha256" (default)
- "rsa_pkcs1_sha384" (default)
- "rsa_pkcs1_sha512" (default)
- "rsa_pss_sha256" (default)
- "rsa_pss_sha384" (default)
- "rsa_pss_sha512" (default)

 The default value is *rsa_pss_sha256,rsa_pss_sha384,rsa_pss_sha512,rsa_pkcs1_sha256,rsa_pkcs1_sha384,rsa_pkcs1_sha512,ecdsa_secp256r1_sha256,ecdsa_secp384r1_sha384,ecdsa_secp521r1_sha512,ed25519,ed448*. This configuration setting is applicable only when [SSLEnabledProtocols](#SSLEnabledProtocols) includes TLS 1.3.

**TLS13SupportedGroups**: The supported groups for (EC)DHE key exchange.This configuration setting specifies a comma-separated list of named groups used in TLS 1.3 for key exchange. This configuration setting should be modified only if there is a specific reason to do so.

The default value is *ecdhe_x25519,ecdhe_x448,ecdhe_secp256r1,ecdhe_secp384r1,ecdhe_secp521r1,ffdhe_2048,ffdhe_3072,ffdhe_4096,ffdhe_6144,ffdhe_8192,mlkem_512,mlkem_768,mlkem_1024,x25519_mlkem_768,secp256r1_mlkem_768*

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)
- "mlkem_512" (default)
- "mlkem_768" (default)
- "mlkem_1024" (default)
- "x25519_mlkem_768" (default)
- "secp256r1_mlkem_768" (default)

Post-quantum algorithms (*mlkem_512,mlkem_768,mlkem_1024,x25519_mlkem_768,secp256r1_mlkem_768*) in our components rely on the operating system's underlying cryptographic primitives. The following platforms are currently supported:

-  Windows Server 2025
-  Windows 11 24H2
-  Windows 11 25H2

### Socket Config Settings

**AbsoluteTimeout**: Determines whether timeouts are inactivity timeouts or absolute timeouts.If [AbsoluteTimeout](#AbsoluteTimeout) is set to True, any method that does not complete within [timeout](#timeout-property) seconds will be aborted. By default, *AbsoluteTimeout* is False, and the timeout is an inactivity timeout.

NOTE: This option is not valid for User Datagram Protocol (UDP) ports.

**FirewallData**: Used to send extra data to the firewall.When the firewall is a tunneling proxy, use this property to send custom (additional) headers to the firewall (e.g., headers for custom authentication schemes).

**InBufferSize**: The size in bytes of the incoming queue of the socket.This is the size of an internal queue in the Transmission Control Protocol (TCP)/IP stack. You can increase or decrease its size depending on the amount of data that you will be receiving. In some cases, increasing the value of the *InBufferSize* setting can provide significant improvements in performance.

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

**OutBufferSize**: The size in bytes of the outgoing queue of the socket.This is the size of an internal queue in the TCP/IP stack. You can increase or decrease its size depending on the amount of data that you will be sending. In some cases, increasing the value of the *OutBufferSize* setting can provide significant improvements in performance.

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

### Base Config Settings

**BuildInfo**: Information about the product's build.When queried, this setting will return a string containing information about the product's build.

**CodePage**: The system code page used for Unicode to Multibyte translations.The default code page is Unicode UTF-8 (65001).

The following is a list of valid code page identifiers:

|  |  |
| --- | --- |
| 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.

**MaskSensitiveData**: Whether sensitive data is masked in log messages.In certain circumstances it may be beneficial to mask sensitive data, like passwords, in log messages. Set this to *True* to mask sensitive data. The default is *True*.

**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](#do_events-method) is called, the class will wait for the amount of time specified here before returning. The default value is 20.

**UseInternalSecurityAPI**: Whether or not to use the system security libraries or an internal implementation. When set to *False*, the class will use the system security libraries by default to perform cryptographic functions where applicable.

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

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

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

# SMPP Errors

### SMPP Errors

|  |  |
| --- | --- |
| 620 | SMPP protocol error |
| 621 | You cannot change this property while connected |
| 622 | Server disconnected before responding |
| 623 | Field value out of range |
| 624 | Unsupported SMPP version |
| 625 | Message parameter too long |

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

### TCPClient Errors

|  |  |
| --- | --- |
| 100 | You cannot change the remote_port at this time. A connection is in progress. |
| 101 | You cannot change the remote_host (Server) at this time. A connection is in progress. |
| 102 | The remote_host address is invalid (0.0.0.0). |
| 104 | Already connected. If you want to reconnect, close the current connection first. |
| 106 | You cannot change the local_port at this time. A connection is in progress. |
| 107 | You cannot change the [local_host](#local_host-property) at this time. A connection is in progress. |
| 112 | You cannot change [MaxLineLength](#MaxLineLength) at this time. A connection is in progress. |
| 116 | remote_port cannot be zero. Please specify a valid service port number. |
| 117 | You cannot change the UseConnection option while the class is active. |
| 135 | Operation would block. |
| 201 | Timeout. |
| 211 | Action impossible in control's present state. |
| 212 | Action impossible while not connected. |
| 213 | Action impossible while listening. |
| 301 | Timeout. |
| 302 | Could not open file. |
| 434 | Unable to convert string to selected CodePage. |
| 1105 | Already connecting. If you want to reconnect, close the current connection first. |
| 1117 | You need to connect first. |
| 1119 | You cannot change the LocalHost at this time. A connection is in progress. |
| 1120 | Connection dropped by remote host. |

### SSL Errors

|  |  |
| --- | --- |
| 270 | Cannot load specified security library. |
| 271 | Cannot open certificate store. |
| 272 | Cannot find specified certificate. |
| 273 | Cannot acquire security credentials. |
| 274 | Cannot find certificate chain. |
| 275 | Cannot verify certificate chain. |
| 276 | Error during handshake. |
| 280 | Error verifying certificate. |
| 281 | Could not find client certificate. |
| 282 | Could not find server certificate. |
| 283 | Error encrypting data. |
| 284 | Error decrypting data. |

### TCP/IP Errors

|  |  |
| --- | --- |
| 10004 | [10004] Interrupted system call. |
| 10009 | [10009] Bad file number. |
| 10013 | [10013] Access denied. |
| 10014 | [10014] Bad address. |
| 10022 | [10022] Invalid argument. |
| 10024 | [10024] Too many open files. |
| 10035 | [10035] Operation would block. |
| 10036 | [10036] Operation now in progress. |
| 10037 | [10037] Operation already in progress. |
| 10038 | [10038] Socket operation on nonsocket. |
| 10039 | [10039] Destination address required. |
| 10040 | [10040] Message is too long. |
| 10041 | [10041] Protocol wrong type for socket. |
| 10042 | [10042] Bad protocol option. |
| 10043 | [10043] Protocol is not supported. |
| 10044 | [10044] Socket type is not supported. |
| 10045 | [10045] Operation is not supported on socket. |
| 10046 | [10046] Protocol family is not supported. |
| 10047 | [10047] Address family is not supported by protocol family. |
| 10048 | [10048] Address already in use. |
| 10049 | [10049] Cannot assign requested address. |
| 10050 | [10050] Network is down. |
| 10051 | [10051] Network is unreachable. |
| 10052 | [10052] Net dropped connection or reset. |
| 10053 | [10053] Software caused connection abort. |
| 10054 | [10054] Connection reset by peer. |
| 10055 | [10055] No buffer space available. |
| 10056 | [10056] Socket is already connected. |
| 10057 | [10057] Socket is not connected. |
| 10058 | [10058] Cannot send after socket shutdown. |
| 10059 | [10059] Too many references, cannot splice. |
| 10060 | [10060] Connection timed out. |
| 10061 | [10061] Connection refused. |
| 10062 | [10062] Too many levels of symbolic links. |
| 10063 | [10063] File name is too long. |
| 10064 | [10064] Host is down. |
| 10065 | [10065] No route to host. |
| 10066 | [10066] Directory is not empty |
| 10067 | [10067] Too many processes. |
| 10068 | [10068] Too many users. |
| 10069 | [10069] Disc Quota Exceeded. |
| 10070 | [10070] Stale NFS file handle. |
| 10071 | [10071] Too many levels of remote in path. |
| 10091 | [10091] Network subsystem is unavailable. |
| 10092 | [10092] WINSOCK DLL Version out of range. |
| 10093 | [10093] Winsock is not loaded yet. |
| 11001 | [11001] Host not found. |
| 11002 | [11002] Nonauthoritative 'Host not found' (try again or check DNS setup). |
| 11003 | [11003] Nonrecoverable errors: FORMERR, REFUSED, NOTIMP. |
| 11004 | [11004] Valid name, no data record (check DNS setup). |
