CoAP Class

Properties Methods Events Config Settings Errors

An easy-to-use CoAP client and server implementation.

Syntax

class ipworksiot.CoAP

Remarks

The CoAP class provides a lightweight, fully-featured CoAP client and server implementation with DTLS support.

Using the Class in Client Mode

While in client mode (i.e., the listening property is disabled; its default setting), the class can be used to send requests to a CoAP server. It can also be used to register as an observer for various server-side resources, causing the server to send notifications anytime said resources change.

By default, the component operates in NoSec mode as defined by RFC 7252. Certificate mode DTLS can be enabled by setting ssl_enabled to True. UseRawPublicKey can be used to enable Raw Public Key mode.

When DTLS is enabled, relevant handshake details will be reported by the on_ssl_status event. Initially, the server will present its certificate to the client. The certificate is validated by the system and the status is provided within the on_ssl_server_authentication event. If the Accept parameter of the on_ssl_server_authentication event is false, the Status parameter will tell you why. You can then set the Accept parameter to true to manually force acceptance of the server certificate.

In some cases, the server requires the client to present a certificate as well. In this case, a valid certificate will need to be specified via the ssl_cert property. This process may look like the following:

coapclient.OnSSLServerAuthentication += (o, e) => { if (e.Accept) return; Console.Write("Server provided the following certificate:\nIssuer: " + e.CertIssuer + "\nSubject: " + e.CertSubject + "\n"); Console.Write("The following problems have been determined for this certificate: " + e.Status + "\n"); Console.Write("Would you like to accept anyways? [y/n] "); if (Console.Read() == 'y') e.Accept = true; }; coapclient.SSLEnabled = true; coapclient.RemoteHost = "remote_ip"; coapclient.RemotePort = 1234; coapclient.Timeout = 30; // if client authentication is applicable coapclient.SSLCert = new Certificate("/path/to/cert.pfx", CertStoreTypes.cstPFXFile, "cert_password", "cert_subject"); To send a request, populate the request_data, request_content_format, request_e_tag, and request_options properties (if necessary, and as applicable), then call one of the following methods:

get
post
put
delete
send_custom_request

The methods above require a URI as a parameter. The format of the URI parameter is coap://hostname:port/resource. The port is optional, and if not specified will default to 5683. For instance coap://myserver/test and coap://myserver:5683/test are equivalent.

Once a response is received, the response_code, response_data, response_content_format, response_e_tag, and response_options properties will be populated, and the on_request_complete event will fire. (If the request times out, the properties are not populated, but the event still fires.) coap.OnRequestComplete += (s, e) => { Console.WriteLine("Request complete!"); Console.WriteLine(coap.ResponseCode); }; // Make a GET request to download a picture. coap.Get("coap://mycoapserver/pictures/animals/cats4.dat?format=png"); // Imaginary function which accepts PNG image data and displays the picture to the user. showPicture(coap.ResponseDataB);

To observe a resource, call the start_observing method. Assuming the server accepts the observer registration request, it will begin sending notifications for the resource anytime it changes. Each change notification will cause the response_code, response_data, response_content_format, response_e_tag, and response_options properties to be populated, and the on_notification event to fire.

To stop observing a resource, either call stop_observing with the same URI value used to call start_observing, or set the on_notification event's StopObserving parameter to True. coap.OnNotification += (s, e) => { // Notifications can arrive out of order; only print to the log if this is the latest one we've received. if (e.IsLatest) { Console.WriteLine("Received notification for the resource at: " + e.URI); Console.WriteLine("New Value: " + coap.ResponseData); } } // Start observing a temperature sensor's data. Assume temperature values are sent back in text format. coap.StartObserving("coap://mycoapserver/home/living_room/sensors/temperature?unit=fahrenheit"); // Assume the server accepts the request and starts sending notifications every so often. // ... // Later, stop observing the resource. coap.StopObserving("coap://mycoapserver/home/living_room/sensors/temperature?unit=fahrenheit");

Using the Class in Server Mode

To operate in server mode, set the local_port to the port the class should listen on (typically 5683, the standard CoAP port), then enable the listening property. Each time a request arrives, the request_data, request_content_format, request_e_tag, and request_options properties will be populated, and the on_request event will fire.

When DTLS is enabled, a valid certificate must be selected before the server can start listening for incoming connections. The certificate can be specified via the ssl_cert property. Note the certificate must contain a private key.

After doing so, calling start_listening will cause the class to start listening for incoming connections. The class will listen on the interface defined by local_host and local_port, if specified. Otherwise, these values will be set by the class. If applicable, these values must be set before calling start_listening. For example:

//coapserver.LocalHost = "some_ip_address"; //coapserver.LocalPort = 1234; coapserver.SSLCert = new Certificate("/path/to/cert.pfx", CertStoreTypes.cstPFXFile, "cert_password", "cert_subject"); coapserver.StartListening(); Console.WriteLine("Listening on: " + coapserver.LocalHost + ":" + coapserver.LocalPort); while (coapserver.Listening) { coapserver.DoEvents(); }

A response can be sent by populating the response_code, response_data, response_content_format, response_e_tag, and response_options properties as desired before the event finishes. Alternatively, the on_request event's SendResponse parameter can be set to False in order to send a response back later. In this case, the RequestId value from the event should be used to call the send_response method later. coap.OnRequest += (s, e) => { // For the purpose of this snippet, assume we only service GET requests, which have a method code of 1. if (e.Method == 1) { Console.WriteLine("GET request received for URI path: " + e.URIPath + " and URI query params: " + e.URIQuery); coap.ResponseCode = "2.05"; // "Content". // Imaginary methods that look up the data and content format of the resource based on the URI path and URI query parameters. coap.ResponseData = lookupResourceData(e.URIPath, e.URIQuery); coap.ResponseContentFormat = lookupResourceContentFormat(e.URIPath, e.URIQuery); } else { coap.ResponseCode = "4.05"; // "Method Not Allowed". coap.ResponseData = "Only GET requests are allowed."; // Include a diagnostic payload. coap.ResponseContentFormat = ""; } // Alternatively, this event could simply save the e.RequestId value somewhere, then some other code could fill in the Response* // properties and call the SendResponse() method later. }; coap.OnResponseComplete += (s, e) => { Console.WriteLine("Response sent for request with Id " + e.RequestId); };

In server mode, the class can also support resource observation. When a client attempts to register itself as an observer of a resource, the on_register event will fire; setting this event's Accept parameter to True will cause the class to accept the registration.

To notify clients that a resource has changed, populate the response_code, response_data, response_content_format, response_e_tag, and response_options properties as desired, and then call the send_notification method, passing it the URI of a resource that has registered observers.

When a client has unregistered from further change notifications, the on_unregistered event will fire. coap.OnRegister += (s, e) => { Console.WriteLine("Client " + e.RemoteHost + ":" + e.RemotePort + " has registered for notifications for the URI " + e.URI); // Imaginary method that helps ensure the application keeps track of observed URIs. The class itself maintains the // list of observers for each URI, so the application just needs to know that there are observers in the first place. observerRegisteredForURI(e.URI); e.Accept = true; }; coap.OnUnregistered += (s, e) => { Console.WriteLine("Client " + e.RemoteHost + ":" + e.RemotePort + " has unregistered from notifications for the URI " + e.URI); // As above, imaginary method that helps ensure the application keeps track of observed URIs. observerUnregisteredForURI(e.URI); }; // Somewhere else in the application, this sort of code might get called after a resource changes to inform any observers of // the change. We use another imaginary method here to check if the changed resource is observed, and to get its information. if (isResourceObserved()) { coap.ResponseCode = "2.05"; // "Content". coap.ResponseDataB = getResourceContent(); coap.ResponseContentFormat = getResourceContentFormat(); coap.SendNotification(getResourceURI()); }

Property List

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


listening	Whether the class should operate in server mode by listening for incoming requests.
local_host	This property includes the name of the local host or user-assigned IP interface through which connections are initiated or accepted.
local_port	This property includes the User Datagram Protocol (UDP) port in the local host where UDP binds.
pending_request_count	The number of records in the PendingRequest arrays.
pending_request_method	The request's method.
pending_request_remote_host	The remote host associated with the request.
pending_request_remote_port	The remote port associated with the request.
pending_request_id	The request's Id.
pending_request_token	The request's token.
pending_request_uri	The request URI.
request_content_format	The request content format.
request_data	The request data.
request_e_tag	The request ETag.
request_option_count	The number of records in the RequestOption arrays.
request_option_critical	Whether the option is critical.
request_option_no_cache_key	Whether the option is to be excluded from the cache-key.
request_option_number	The option's number.
request_option_unsafe	Whether the option is unsafe to forward.
request_option_value	The option's value.
request_option_value_type	The option's value data type.
response_code	The response code.
response_content_format	The response content format.
response_data	The response data.
response_e_tag	The response ETag.
response_option_count	The number of records in the ResponseOption arrays.
response_option_critical	Whether the option is critical.
response_option_no_cache_key	Whether the option is to be excluded from the cache-key.
response_option_number	The option's number.
response_option_unsafe	Whether the option is unsafe to forward.
response_option_value	The option's value.
response_option_value_type	The option's value data type.
ssl_accept_server_cert_effective_date	This is the date on which this certificate becomes valid.
ssl_accept_server_cert_expiration_date	This is the date the certificate expires.
ssl_accept_server_cert_extended_key_usage	This is a comma-delimited list of extended key usage identifiers.
ssl_accept_server_cert_fingerprint	This is the hex-encoded, 16-byte MD5 fingerprint of the certificate.
ssl_accept_server_cert_fingerprint_sha1	This is the hex-encoded, 20-byte SHA-1 fingerprint of the certificate.
ssl_accept_server_cert_fingerprint_sha256	This is the hex-encoded, 32-byte SHA-256 fingerprint of the certificate.
ssl_accept_server_cert_issuer	This is the issuer of the certificate.
ssl_accept_server_cert_private_key	This is the private key of the certificate (if available).
ssl_accept_server_cert_private_key_available	This property shows whether a PrivateKey is available for the selected certificate.
ssl_accept_server_cert_private_key_container	This is the name of the PrivateKey container for the certificate (if available).
ssl_accept_server_cert_public_key	This is the public key of the certificate.
ssl_accept_server_cert_public_key_algorithm	This property contains the textual description of the certificate's public key algorithm.
ssl_accept_server_cert_public_key_length	This is the length of the certificate's public key (in bits).
ssl_accept_server_cert_serial_number	This is the serial number of the certificate encoded as a string.
ssl_accept_server_cert_signature_algorithm	The property contains the text description of the certificate's signature algorithm.
ssl_accept_server_cert_store	This is the name of the certificate store for the client certificate.
ssl_accept_server_cert_store_password	If the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.
ssl_accept_server_cert_store_type	This is the type of certificate store for this certificate.
ssl_accept_server_cert_subject_alt_names	This property contains comma-separated lists of alternative subject names for the certificate.
ssl_accept_server_cert_thumbprint_md5	This property contains the MD5 hash of the certificate.
ssl_accept_server_cert_thumbprint_sha1	This property contains the SHA-1 hash of the certificate.
ssl_accept_server_cert_thumbprint_sha256	This property contains the SHA-256 hash of the certificate.
ssl_accept_server_cert_usage	This property contains the text description of UsageFlags .
ssl_accept_server_cert_usage_flags	This property contains the flags that show intended use for the certificate.
ssl_accept_server_cert_version	This property contains the certificate's version number.
ssl_accept_server_cert_subject	This is the subject of the certificate used for client authentication.
ssl_accept_server_cert_encoded	This is the certificate (PEM/Base64 encoded).
ssl_authenticate_clients	If set to True, the server asks the client(s) for a certificate.
ssl_cert_effective_date	This is the date on which this certificate becomes valid.
ssl_cert_expiration_date	This is the date the certificate expires.
ssl_cert_extended_key_usage	This is a comma-delimited list of extended key usage identifiers.
ssl_cert_fingerprint	This is the hex-encoded, 16-byte MD5 fingerprint of the certificate.
ssl_cert_fingerprint_sha1	This is the hex-encoded, 20-byte SHA-1 fingerprint of the certificate.
ssl_cert_fingerprint_sha256	This is the hex-encoded, 32-byte SHA-256 fingerprint of the certificate.
ssl_cert_issuer	This is the issuer of the certificate.
ssl_cert_private_key	This is the private key of the certificate (if available).
ssl_cert_private_key_available	This property shows whether a PrivateKey is available for the selected certificate.
ssl_cert_private_key_container	This is the name of the PrivateKey container for the certificate (if available).
ssl_cert_public_key	This is the public key of the certificate.
ssl_cert_public_key_algorithm	This property contains the textual description of the certificate's public key algorithm.
ssl_cert_public_key_length	This is the length of the certificate's public key (in bits).
ssl_cert_serial_number	This is the serial number of the certificate encoded as a string.
ssl_cert_signature_algorithm	The property contains the text description of the certificate's signature algorithm.
ssl_cert_store	This is the name of the certificate store for the client certificate.
ssl_cert_store_password	If the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.
ssl_cert_store_type	This is the type of certificate store for this certificate.
ssl_cert_subject_alt_names	This property contains comma-separated lists of alternative subject names for the certificate.
ssl_cert_thumbprint_md5	This property contains the MD5 hash of the certificate.
ssl_cert_thumbprint_sha1	This property contains the SHA-1 hash of the certificate.
ssl_cert_thumbprint_sha256	This property contains the SHA-256 hash of the certificate.
ssl_cert_usage	This property contains the text description of UsageFlags .
ssl_cert_usage_flags	This property contains the flags that show intended use for the certificate.
ssl_cert_version	This property contains the certificate's version number.
ssl_cert_subject	This is the subject of the certificate used for client authentication.
ssl_cert_encoded	This is the certificate (PEM/Base64 encoded).
ssl_enabled	This property indicates whether Transport Layer Security/Secure Sockets Layer (TLS/SSL) is enabled.
ssl_server_cert_effective_date	This is the date on which this certificate becomes valid.
ssl_server_cert_expiration_date	This is the date the certificate expires.
ssl_server_cert_extended_key_usage	This is a comma-delimited list of extended key usage identifiers.
ssl_server_cert_fingerprint	This is the hex-encoded, 16-byte MD5 fingerprint of the certificate.
ssl_server_cert_fingerprint_sha1	This is the hex-encoded, 20-byte SHA-1 fingerprint of the certificate.
ssl_server_cert_fingerprint_sha256	This is the hex-encoded, 32-byte SHA-256 fingerprint of the certificate.
ssl_server_cert_issuer	This is the issuer of the certificate.
ssl_server_cert_private_key	This is the private key of the certificate (if available).
ssl_server_cert_private_key_available	This property shows whether a PrivateKey is available for the selected certificate.
ssl_server_cert_private_key_container	This is the name of the PrivateKey container for the certificate (if available).
ssl_server_cert_public_key	This is the public key of the certificate.
ssl_server_cert_public_key_algorithm	This property contains the textual description of the certificate's public key algorithm.
ssl_server_cert_public_key_length	This is the length of the certificate's public key (in bits).
ssl_server_cert_serial_number	This is the serial number of the certificate encoded as a string.
ssl_server_cert_signature_algorithm	The property contains the text description of the certificate's signature algorithm.
ssl_server_cert_store	This is the name of the certificate store for the client certificate.
ssl_server_cert_store_password	If the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.
ssl_server_cert_store_type	This is the type of certificate store for this certificate.
ssl_server_cert_subject_alt_names	This property contains comma-separated lists of alternative subject names for the certificate.
ssl_server_cert_thumbprint_md5	This property contains the MD5 hash of the certificate.
ssl_server_cert_thumbprint_sha1	This property contains the SHA-1 hash of the certificate.
ssl_server_cert_thumbprint_sha256	This property contains the SHA-256 hash of the certificate.
ssl_server_cert_usage	This property contains the text description of UsageFlags .
ssl_server_cert_usage_flags	This property contains the flags that show intended use for the certificate.
ssl_server_cert_version	This property contains the certificate's version number.
ssl_server_cert_subject	This is the subject of the certificate used for client authentication.
ssl_server_cert_encoded	This is the certificate (PEM/Base64 encoded).
timeout	A timeout for the class.
use_confirmable_messages	Whether to use confirmable message.

Method List

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


cancel_request	Cancels a pending request.
config	Sets or retrieves a configuration setting.
delete	Sends a DELETE request to the server.
do_events	This method processes events from the internal message queue.
get	Sends a GET request to the server.
post	Sends a POST request to the server.
put	Sends a PUT request to the server.
reset	This method will reset the class.
send_custom_request	Sends a custom request to the server.
send_notification	Sends a notification to all clients observing a given resource.
send_response	Sends a response for a given pending request to the corresponding client.
start_listening	This method starts listening for incoming connections.
start_observing	Registers the class as an observer for a given resource.
stop_listening	This method stops listening for new connections.
stop_observing	Unregisters the class as an observer for a given resource.

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_error	Fired when information is available about errors during data delivery.
on_log	Fires once for each log message.
on_notification	Fires when a notification is received from the server.
on_register	Fires when a client wishes to register for notifications.
on_request	Fires when a request is received from a client.
on_request_complete	Fires when a request completes.
on_response_complete	Fires when a response has been sent to a client.
on_ssl_client_authentication	This event is fired when the client presents its credentials to the server.
on_ssl_server_authentication	Fired after the server presents its certificate to the client.
on_ssl_status	Fired when secure connection progress messages are available.
on_unregistered	Fires when a client has unregistered from notifications.

Config Settings

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


MessageId	Sets the MessageId for a request.
UseEmptyToken	Uses an empty value for the request token.
UseRawPublicKey	Whether to enable Raw Public Key mode.
LogSSLPackets	Controls whether SSL packets are logged when using the internal security API.
OpenSSLCADir	The path to a directory containing CA certificates.
OpenSSLCAFile	Name of the file containing the list of CA's trusted by your application.
OpenSSLCipherList	A string that controls the ciphers to be used by SSL.
OpenSSLPrngSeedData	The data to seed the pseudo random number generator (PRNG).
ReuseSSLSession	Determines if the SSL session is reused.
SSLCACertFilePaths	The paths to CA certificate files on Unix/Linux.
SSLCACerts	A newline separated list of CA certificates to be included when performing an SSL handshake.
SSLCheckCRL	Whether to check the Certificate Revocation List for the server certificate.
SSLCheckOCSP	Whether to use OCSP to check the status of the server certificate.
SSLCipherStrength	The minimum cipher strength used for bulk encryption.
SSLClientCACerts	A newline separated list of CA certificates to use during SSL client certificate validation.
SSLEnabledCipherSuites	The cipher suite to be used in an SSL negotiation.
SSLEnabledProtocols	Used to enable/disable the supported security protocols.
SSLEnableRenegotiation	Whether the renegotiation_info SSL extension is supported.
SSLIncludeCertChain	Whether the entire certificate chain is included in the SSLServerAuthentication event.
SSLKeyLogFile	The location of a file where per-session secrets are written for debugging purposes.
SSLNegotiatedCipher	Returns the negotiated cipher suite.
SSLNegotiatedCipherStrength	Returns the negotiated cipher suite strength.
SSLNegotiatedCipherSuite	Returns the negotiated cipher suite.
SSLNegotiatedKeyExchange	Returns the negotiated key exchange algorithm.
SSLNegotiatedKeyExchangeStrength	Returns the negotiated key exchange algorithm strength.
SSLNegotiatedVersion	Returns the negotiated protocol version.
SSLSecurityFlags	Flags that control certificate verification.
SSLServerCACerts	A newline separated list of CA certificates to use during SSL server certificate validation.
TLS12SignatureAlgorithms	Defines the allowed TLS 1.2 signature algorithms when SSLProvider is set to Internal.
TLS12SupportedGroups	The supported groups for ECC.
TLS13KeyShareGroups	The groups for which to pregenerate key shares.
TLS13SignatureAlgorithms	The allowed certificate signature algorithms.
TLS13SupportedGroups	The supported groups for (EC)DHE key exchange.
CaptureIPPacketInfo	Used to capture the packet information.
DelayHostResolution	Whether the hostname is resolved when RemoteHost is set.
DestinationAddress	Used to get the destination address from the packet information.
DontFragment	Used to set the Don't Fragment flag of outgoing packets.
LocalHost	The name of the local host through which connections are initiated or accepted.
LocalPort	The port in the local host where the class binds.
MaxPacketSize	The maximum length of the packets that can be received.
QOSDSCPValue	Used to specify an arbitrary QOS/DSCP setting (optional).
QOSTrafficType	Used to specify QOS/DSCP settings (optional).
ShareLocalPort	If set to True, allows more than one instance of the class to be active on the same local port.
SourceIPAddress	Used to set the source IP address used when sending a packet.
SourceMacAddress	Used to set the source MAC address used when sending a packet.
UseConnection	Determines whether to use a connected socket.
UseIPv6	Whether or not to use IPv6.
AbsoluteTimeout	Determines whether timeouts are inactivity timeouts or absolute timeouts.
FirewallData	Used to send extra data to the firewall.
InBufferSize	The size in bytes of the incoming queue of the socket.
OutBufferSize	The size in bytes of the outgoing queue of the socket.
BuildInfo	Information about the product's build.
CodePage	The system code page used for Unicode to Multibyte translations.
LicenseInfo	Information about the current license.
MaskSensitiveData	Whether sensitive data is masked in log messages.
ProcessIdleEvents	Whether the class uses its internal event loop to process events when the main thread is idle.
SelectWaitMillis	The length of time in milliseconds the class will wait when DoEvents is called if there are no events to process.
UseFIPSCompliantAPI	Tells the class whether or not to use FIPS certified APIs.
UseInternalSecurityAPI	Whether or not to use the system security libraries or an internal implementation.

listening Property

Whether the class should operate in server mode by listening for incoming requests.

Syntax

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

listening = property(get_listening, set_listening)

Default Value

FALSE

Remarks

This property indicates whether the class operates in server mode or client mode.

When this property is False (default), the class operate in client mode, allowing applications to send requests using the get, post, send_custom_request, etc. methods.

When this property is True, the class listens on local_port for incoming CoAP requests, firing the on_request event anytime one arrives. Applications can service these requests directly during on_request events, or send separate responses later using the send_response method.

Applications that wish to use the class in server mode should set the local_port property to the desired listening port (such as 5683, the standard CoAP port) before calling start_listening. Otherwise the system will choose a port at random.

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

local_host Property

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

Syntax

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

local_host = property(get_local_host, set_local_host)

Default Value

Remarks

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

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

If the class is connected, the 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.

local_port Property

This property includes the User Datagram Protocol (UDP) port in the local host where UDP binds.

Syntax

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

local_port = property(get_local_port, set_local_port)

Default Value

Remarks

The local_port property must be set before UDP is activated (active is set to True). This instructs the class to bind to a specific port (or communication endpoint) in the local machine.

Setting it to 0 (default) enables the Transmission Control Protocol (TCP)/IP stack to choose a port at random. The chosen port will be shown by the local_port property after the connection is established.

local_port cannot be changed once the class is active. Any attempt to set the local_port property when the class is active will generate an error.

The local_port property is useful when trying to connect to services that require a trusted port on the client side.

pending_request_count Property

The number of records in the PendingRequest arrays.

Syntax

def get_pending_request_count() -> int: ...

pending_request_count = property(get_pending_request_count, None)

Default Value

Remarks

This property controls the size of the following arrays:

pending_request_id
pending_request_method
pending_request_remote_host
pending_request_remote_port
pending_request_token
pending_request_uri

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

This property is read-only.

pending_request_method Property

The request's method.

Syntax

def get_pending_request_method(pending_request_index: int) -> int: ...

Default Value

Remarks

The request's method.

This property reflects the request's method code, which must be a value in the range 0 to 31. The following table provides a (non-exhaustive) list of some of the more common method codes; refer to the IANA's CoAP Method Codes registry for a full list.


Method Code	Name
`1`	GET
`2`	POST
`3`	PUT
`4`	DELETE
`5`	FETCH
`6`	PATCH

The pending_request_index parameter specifies the index of the item in the array. The size of the array is controlled by the pending_request_count property.

This property is read-only.

pending_request_remote_host Property

The remote host associated with the request.

Syntax

def get_pending_request_remote_host(pending_request_index: int) -> str: ...

Default Value

Remarks

The remote host associated with the request.

This property reflects the remote host associated with the request. When the class is operating in client mode (i.e., the listening property is disabled), this is the remote host to which the request was sent; when the class is operating in server mode (i.e., the listening property is enabled), this is the remote host from which the request was received.

The pending_request_index parameter specifies the index of the item in the array. The size of the array is controlled by the pending_request_count property.

This property is read-only.

pending_request_remote_port Property

The remote port associated with the request.

Syntax

def get_pending_request_remote_port(pending_request_index: int) -> int: ...

Default Value

Remarks

The remote port associated with the request.

This property reflects the remote port associated with the request. Refer to the pending_request_remote_host property's documentation for more information.

The pending_request_index parameter specifies the index of the item in the array. The size of the array is controlled by the pending_request_count property.

This property is read-only.

pending_request_id Property

The request's Id.

Syntax

def get_pending_request_id(pending_request_index: int) -> str: ...

Default Value

Remarks

The request's Id.

This property reflects the request's class-generated Id.

The pending_request_index parameter specifies the index of the item in the array. The size of the array is controlled by the pending_request_count property.

This property is read-only.

pending_request_token Property

The request's token.

Syntax

def get_pending_request_token(pending_request_index: int) -> bytes: ...

Default Value

Remarks

The request's token.

This property reflects the request's token.

The pending_request_index parameter specifies the index of the item in the array. The size of the array is controlled by the pending_request_count property.

This property is read-only.

pending_request_uri Property

The request URI.

Syntax

def get_pending_request_uri(pending_request_index: int) -> str: ...

Default Value

Remarks

The request URI.

This property reflects the request's URI.

The pending_request_index parameter specifies the index of the item in the array. The size of the array is controlled by the pending_request_count property.

This property is read-only.

request_content_format Property

The request content format.

Syntax

def get_request_content_format() -> int: ...
def set_request_content_format(value: int) -> None: ...

request_content_format = property(get_request_content_format, set_request_content_format)

Default Value

-1

Remarks

When the class is operating in client mode (i.e., the listening property is disabled), this property specifies the content format that should be included in outgoing requests.

When the class is operating in server mode (i.e., the listening property is enabled), this property is populated with the content format included in incoming requests (if any) anytime the on_request event fires.

In either case, the valid set of values for this property is -1, or a value in the range 0 to 65535. -1 prevents a Content-Format option from being included when sending a request, or indicates that one was not included in a received response.

The following table provides a (non-exhaustive) list of some of the more common content formats; refer to the IANA's CoAP Content-Formats registry for a full list.


`-1` (default)	Content-Format option not included.
Value	Media Type	Encoding
`0`	text/plain; charset=utf-8
`40`	application/link-format
`41`	application/xml
`42`	application/octet-stream
`47`	application/exi
`50`	application/json
`51`	application/json-patch+json
`52`	application/merge-patch+json
`60`	application/cbor
`61`	application/cwt
`62`	application/multipart-core
`63`	application/cbor-seq
`11050`	application/json	deflate
`11060`	application/cbor	deflate

request_data Property

The request data.

Syntax

def get_request_data() -> bytes: ...
def set_request_data(value: bytes) -> None: ...

request_data = property(get_request_data, set_request_data)

Default Value

Remarks

When the class is operating in client mode (i.e., the listening property is disabled), this property specifies the data that should be included in requests sent using post, put, or send_custom_request.

When the class is operating in server mode (i.e., the listening property is enabled), this property is populated with the data included in incoming requests (if any) anytime the on_request event fires.

request_e_tag Property

The request ETag.

Syntax

def get_request_e_tag() -> bytes: ...
def set_request_e_tag(value: bytes) -> None: ...

request_e_tag = property(get_request_e_tag, set_request_e_tag)

Default Value

Remarks

When the class is operating in client mode (i.e., the listening property is disabled), this property specifies the ETag that should be included in outgoing requests. Leave it empty to prevent an Etag option from being included.

When the class is operating in server mode (i.e., the listening property is enabled), this property is populated with the ETag included in incoming requests (if any) anytime the on_request event fires. It will be empty if an Etag option was not included.

request_option_count Property

The number of records in the RequestOption arrays.

Syntax

def get_request_option_count() -> int: ...
def set_request_option_count(value: int) -> None: ...

request_option_count = property(get_request_option_count, set_request_option_count)

Default Value

Remarks

This property controls the size of the following arrays:

request_option_critical
request_option_no_cache_key
request_option_number
request_option_unsafe
request_option_value
request_option_value_type

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

request_option_critical Property

Whether the option is critical.

Syntax

def get_request_option_critical(request_option_index: int) -> bool: ...

Default Value

FALSE

Remarks

Whether the option is critical.

This property reflects whether the option is critical or elective. Receivers that do not recognize a critical option must return a 4.02 "Bad Option" response code back to the sender. Unrecognized elective options can be safely ignored.

The request_option_index parameter specifies the index of the item in the array. The size of the array is controlled by the request_option_count property.

This property is read-only.

request_option_no_cache_key Property

Whether the option is to be excluded from the cache-key.

Syntax

def get_request_option_no_cache_key(request_option_index: int) -> bool: ...

Default Value

FALSE

Remarks

Whether the option is to be excluded from the cache-key.

This property reflects whether the option should be excluded from any cache-key calculations. This information is generally only needed for caching and proxying.

The request_option_index parameter specifies the index of the item in the array. The size of the array is controlled by the request_option_count property.

This property is read-only.

request_option_number Property

The option's number.

Syntax

def get_request_option_number(request_option_index: int) -> int: ...
def set_request_option_number(request_option_index: int, value: int) -> None: ...

Default Value

Remarks

The option's number.

The property reflects the option's number, which must be a value in the range 0 to 65535 (inclusive). Setting this property to a recognized option number (see table below) will automatically set the request_option_value_type property to the correct value (it should be set manually otherwise).

The following table provides a (non-exhaustive) list of some of the more common option numbers; refer to the IANA's CoAP Option Numbers registry for a full list.


Number	Option
`1`	If-Match
`3`	Uri-Host
`4`	ETag
`5`	If-None-Match
`6`	Observe
`7`	Uri-Port
`8`	Location-Path
`11`	Uri-Path
`12`	Content-Format
`14`	Max-Age
`15`	Uri-Query
`17`	Accept
`20`	Location-Query
`23`	Block2
`27`	Block1
`35`	Proxy-Uri
`39`	Proxy-Scheme
`60`	Size1

The request_option_index parameter specifies the index of the item in the array. The size of the array is controlled by the request_option_count property.

request_option_unsafe Property

Whether the option is unsafe to forward.

Syntax

def get_request_option_unsafe(request_option_index: int) -> bool: ...

Default Value

FALSE

Remarks

Whether the option is unsafe to forward.

This property reflects whether the option is unsafe to forward. This information is generally only needed for proxying.

The request_option_index parameter specifies the index of the item in the array. The size of the array is controlled by the request_option_count property.

This property is read-only.

request_option_value Property

The option's value.

Syntax

def get_request_option_value(request_option_index: int) -> str: ...
def set_request_option_value(request_option_index: int, value: str) -> None: ...

Default Value

Remarks

The option's value.

This property specifies the option's value. The request_option_value_type property specifies the data type of the value.

The request_option_index parameter specifies the index of the item in the array. The size of the array is controlled by the request_option_count property.

request_option_value_type Property

The option's value data type.

Syntax

def get_request_option_value_type(request_option_index: int) -> int: ...
def set_request_option_value_type(request_option_index: int, value: int) -> None: ...

Default Value

Remarks

The option's value data type.

This property specifies the data type of the option's request_option_value. If request_option_number is set to a recognized value (refer to the table in its documentation), this property will automatically be set to the correct value. The table below shows the possible value types, their descriptions, and how to format the data assigned to request_option_value.


Type	Description	Value Format
`ovtString (0)` (default)	String	String
`ovtUInt (1)`	Unsigned integer	0 to 4294967295
`ovtBinary (2)`	Binary data	Hex-encoded byte string

The request_option_index parameter specifies the index of the item in the array. The size of the array is controlled by the request_option_count property.

response_code Property

The response code.

Syntax

def get_response_code() -> str: ...
def set_response_code(value: str) -> None: ...

response_code = property(get_response_code, set_response_code)

Default Value

Remarks

When the class is operating in client mode (i.e., the listening property is disabled), this property is populated with the response code included in incoming responses anytime the on_request_complete event fires.

When the class is operating in server mode (i.e., the listening property is enabled), this property specifies the response code that should be included in outgoing responses (regardless of whether they are sent immediately after on_request fires, or later using send_response or send_notification).

In either case, the valid set of values for this property are strings of the format c.dd, where c is a class value in the range 2 to 7, and dd is a detail value in the range 00 to 31.

The following table provides a (non-exhaustive) list of some of the more common response codes; refer to the IANA's CoAP Response Codes registry for a full list.


Code	Description
`2.01`	Created
`2.02`	Deleted
`2.03`	Valid
`2.04`	Changed
`2.05`	Content
`2.31`	Continue
`4.00`	Bad Request
`4.01`	Unauthorized
`4.02`	Bad Option
`4.03`	Forbidden
`4.04`	Not Found
`4.12`	Precondition Failed
`5.00`	Internal Server Error
`5.01`	Not Implemented
`5.02`	Bad Gateway
`5.03`	Service Unavailable
`5.04`	Gateway Timeout

response_content_format Property

The response content format.

Syntax

def get_response_content_format() -> int: ...
def set_response_content_format(value: int) -> None: ...

response_content_format = property(get_response_content_format, set_response_content_format)

Default Value

-1

Remarks

When the class is operating in client mode (i.e., the listening property is disabled), this property is populated with the content format included in incoming responses anytime the on_request_complete event fires.

When the class is operating in server mode (i.e., the listening property is enabled), this property specifies the content format that should be included in outgoing responses (regardless of whether they are sent immediately after on_request fires, or later using send_response or send_notification).

In either case, the valid set of values for this property is -1, or a value in the range 0 to 65535. -1 prevents a Content-Format option from being included when sending a response, or indicates that one was not included in a received response.

The following table provides a (non-exhaustive) list of some of the more common content formats; refer to the IANA's CoAP Content-Formats registry for a full list.


`-1` (default)	Content-Format option not included.
Value	Media Type	Encoding
`0`	text/plain; charset=utf-8
`40`	application/link-format
`41`	application/xml
`42`	application/octet-stream
`47`	application/exi
`50`	application/json
`51`	application/json-patch+json
`52`	application/merge-patch+json
`60`	application/cbor
`61`	application/cwt
`62`	application/multipart-core
`63`	application/cbor-seq
`11050`	application/json	deflate
`11060`	application/cbor	deflate

response_data Property

The response data.

Syntax

def get_response_data() -> bytes: ...
def set_response_data(value: bytes) -> None: ...

response_data = property(get_response_data, set_response_data)

Default Value

Remarks

When the class is operating in client mode (i.e., the listening property is disabled), this property is populated with the data included in incoming responses (if any) anytime the on_request_complete event fires.

When the class is operating in server mode (i.e., the listening property is enabled), this property specifies the data that should be included in outgoing responses (regardless of whether they are sent immediately after on_request fires, or later using send_response or send_notification).

response_e_tag Property

The response ETag.

Syntax

def get_response_e_tag() -> bytes: ...
def set_response_e_tag(value: bytes) -> None: ...

response_e_tag = property(get_response_e_tag, set_response_e_tag)

Default Value

Remarks

When the class is operating in client mode (i.e., the listening property is disabled), this property is populated with the ETag included in incoming responses (if any) anytime the on_request_complete event fires. It will be empty if an Etag option was not included.

When the class is operating in server mode (i.e., the listening property is enabled), this property specifies the ETag that should be included in outgoing responses (regardless of whether they are sent immediately after on_request fires, or later using send_response or send_notification). Leave it empty to prevent an Etag option from being included.

response_option_count Property

The number of records in the ResponseOption arrays.

Syntax

def get_response_option_count() -> int: ...
def set_response_option_count(value: int) -> None: ...

response_option_count = property(get_response_option_count, set_response_option_count)

Default Value

Remarks

This property controls the size of the following arrays:

response_option_critical
response_option_no_cache_key
response_option_number
response_option_unsafe
response_option_value
response_option_value_type

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

response_option_critical Property

Whether the option is critical.

Syntax

def get_response_option_critical(response_option_index: int) -> bool: ...

Default Value

FALSE

Remarks

Whether the option is critical.

The response_option_index parameter specifies the index of the item in the array. The size of the array is controlled by the response_option_count property.

This property is read-only.

response_option_no_cache_key Property

Whether the option is to be excluded from the cache-key.

Syntax

def get_response_option_no_cache_key(response_option_index: int) -> bool: ...

Default Value

FALSE

Remarks

Whether the option is to be excluded from the cache-key.

This property reflects whether the option should be excluded from any cache-key calculations. This information is generally only needed for caching and proxying.

The response_option_index parameter specifies the index of the item in the array. The size of the array is controlled by the response_option_count property.

This property is read-only.

response_option_number Property

The option's number.

Syntax

def get_response_option_number(response_option_index: int) -> int: ...
def set_response_option_number(response_option_index: int, value: int) -> None: ...

Default Value

Remarks

The option's number.

The property reflects the option's number, which must be a value in the range 0 to 65535 (inclusive). Setting this property to a recognized option number (see table below) will automatically set the response_option_value_type property to the correct value (it should be set manually otherwise).

The following table provides a (non-exhaustive) list of some of the more common option numbers; refer to the IANA's CoAP Option Numbers registry for a full list.


Number	Option
`1`	If-Match
`3`	Uri-Host
`4`	ETag
`5`	If-None-Match
`6`	Observe
`7`	Uri-Port
`8`	Location-Path
`11`	Uri-Path
`12`	Content-Format
`14`	Max-Age
`15`	Uri-Query
`17`	Accept
`20`	Location-Query
`23`	Block2
`27`	Block1
`35`	Proxy-Uri
`39`	Proxy-Scheme
`60`	Size1

The response_option_index parameter specifies the index of the item in the array. The size of the array is controlled by the response_option_count property.

response_option_unsafe Property

Whether the option is unsafe to forward.

Syntax

def get_response_option_unsafe(response_option_index: int) -> bool: ...

Default Value

FALSE

Remarks

Whether the option is unsafe to forward.

This property reflects whether the option is unsafe to forward. This information is generally only needed for proxying.

The response_option_index parameter specifies the index of the item in the array. The size of the array is controlled by the response_option_count property.

This property is read-only.

response_option_value Property

The option's value.

Syntax

def get_response_option_value(response_option_index: int) -> str: ...
def set_response_option_value(response_option_index: int, value: str) -> None: ...

Default Value

Remarks

The option's value.

This property specifies the option's value. The response_option_value_type property specifies the data type of the value.

The response_option_index parameter specifies the index of the item in the array. The size of the array is controlled by the response_option_count property.

response_option_value_type Property

The option's value data type.

Syntax

def get_response_option_value_type(response_option_index: int) -> int: ...
def set_response_option_value_type(response_option_index: int, value: int) -> None: ...

Default Value

Remarks

The option's value data type.

This property specifies the data type of the option's response_option_value. If response_option_number is set to a recognized value (refer to the table in its documentation), this property will automatically be set to the correct value. The table below shows the possible value types, their descriptions, and how to format the data assigned to response_option_value.


Type	Description	Value Format
`ovtString (0)` (default)	String	String
`ovtUInt (1)`	Unsigned integer	0 to 4294967295
`ovtBinary (2)`	Binary data	Hex-encoded byte string

The response_option_index parameter specifies the index of the item in the array. The size of the array is controlled by the response_option_count property.

ssl_accept_server_cert_effective_date Property

This is the date on which this certificate becomes valid.

Syntax

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

This is 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_expiration_date Property

This is the date the certificate expires.

Syntax

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

This is the date 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

This is a comma-delimited list of extended key usage identifiers.

Syntax

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

This is 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

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

Syntax

def get_ssl_accept_server_cert_fingerprint() -> str: ...

ssl_accept_server_cert_fingerprint = property(get_ssl_accept_server_cert_fingerprint, None)

Default Value

Remarks

This is 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

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

Syntax

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

This is 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

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

Syntax

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

This is 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

This is the issuer of the certificate.

Syntax

def get_ssl_accept_server_cert_issuer() -> str: ...

ssl_accept_server_cert_issuer = property(get_ssl_accept_server_cert_issuer, None)

Default Value

Remarks

This is 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

This is the private key of the certificate (if available).

Syntax

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

This is 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 may be available but not exportable. In this case, ssl_accept_server_cert_private_key returns an empty string.

This property is read-only.

ssl_accept_server_cert_private_key_available Property

This property shows whether a PrivateKey is available for the selected certificate.

Syntax

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

This property shows whether a ssl_accept_server_cert_private_key is available for the selected certificate. If ssl_accept_server_cert_private_key_available 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

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

Syntax

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

This is the name of the ssl_accept_server_cert_private_key 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

This is the public key of the certificate.

Syntax

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

This is 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

This property contains the textual description of the certificate's public key algorithm.

Syntax

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

This property contains 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

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

Syntax

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

Remarks

This is 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

This is the serial number of the certificate encoded as a string.

Syntax

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

This is 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 property contains the text description of the certificate's signature algorithm.

Syntax

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 property contains 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

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

Syntax

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

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

The ssl_accept_server_cert_store_type property denotes the type of the certificate store specified by ssl_accept_server_cert_store. If the store is password protected, specify the password in ssl_accept_server_cert_store_password.

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

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

This is the type of certificate store for this certificate.

Syntax

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)

Default Value

Remarks

This is the type of certificate store for this certificate.

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


0 (cstUser - default)	For Windows, this specifies that the certificate store is a certificate store owned by the current user. Note: This store type is not available in Java.
1 (cstMachine)	For Windows, this specifies that the certificate store is a machine store. Note: This store type is not available in Java.
2 (cstPFXFile)	The certificate store is the name of a PFX (PKCS#12) file containing certificates.
3 (cstPFXBlob)	The certificate store is a string (binary or Base64-encoded) representing a certificate store in PFX (PKCS#12) format.
4 (cstJKSFile)	The certificate store is the name of a Java Key Store (JKS) file containing certificates. Note: This store type is only available in Java.
5 (cstJKSBlob)	The certificate store is a string (binary or Base64-encoded) representing a certificate store in Java Key Store (JKS) format. Note: This store type is only available in Java.
6 (cstPEMKeyFile)	The certificate store is the name of a PEM-encoded file that contains a private key and an optional certificate.
7 (cstPEMKeyBlob)	The certificate store is a string (binary or Base64-encoded) that contains a private key and an optional certificate.
8 (cstPublicKeyFile)	The certificate store is the name of a file that contains a PEM- or DER-encoded public key certificate.
9 (cstPublicKeyBlob)	The certificate store is a string (binary or Base64-encoded) that contains a PEM- or DER-encoded public key certificate.
10 (cstSSHPublicKeyBlob)	The certificate store is a string (binary or Base64-encoded) that contains an SSH-style public key.
11 (cstP7BFile)	The certificate store is the name of a PKCS#7 file containing certificates.
12 (cstP7BBlob)	The certificate store is a string (binary) representing a certificate store in PKCS#7 format.
13 (cstSSHPublicKeyFile)	The certificate store is the name of a file that contains an SSH-style public key.
14 (cstPPKFile)	The certificate store is the name of a file that contains a PPK (PuTTY Private Key).
15 (cstPPKBlob)	The certificate store is a string (binary) that contains a PPK (PuTTY Private Key).
16 (cstXMLFile)	The certificate store is the name of a file that contains a certificate in XML format.
17 (cstXMLBlob)	The certificate store is a string that contains a certificate in XML format.
18 (cstJWKFile)	The certificate store is the name of a file that contains a JWK (JSON Web Key).
19 (cstJWKBlob)	The certificate store is a string that contains a JWK (JSON Web Key).
21 (cstBCFKSFile)	The certificate store is the name of a file that contains a BCFKS (Bouncy Castle FIPS Key Store). Note: This store type is only available in Java and .NET.
22 (cstBCFKSBlob)	The certificate store is a string (binary or Base64-encoded) representing a certificate store in BCFKS (Bouncy Castle FIPS Key Store) format. Note: This store type is only available in Java and .NET.
23 (cstPKCS11)	The certificate is present on a physical security key accessible via a PKCS#11 interface. To use a security key, the necessary data must first be collected using the CertMgr class. The list_store_certificates method may be called after setting cert_store_type to `cstPKCS11`, cert_store_password to the PIN, and cert_store to the full path of the PKCS#11 DLL. The certificate information returned in the on_cert_list event's `CertEncoded` parameter may be saved for later use. When using a certificate, pass the previously saved security key information as the ssl_accept_server_cert_store and set ssl_accept_server_cert_store_password to the PIN. Code Example. SSH Authentication with Security Key: `certmgr.CertStoreType = CertStoreTypes.cstPKCS11; certmgr.OnCertList += (s, e) => { secKeyBlob = e.CertEncoded; }; certmgr.CertStore = @"C:\Program Files\OpenSC Project\OpenSC\pkcs11\opensc-pkcs11.dll"; certmgr.CertStorePassword = "123456"; //PIN certmgr.ListStoreCertificates(); sftp.SSHCert = new Certificate(CertStoreTypes.cstPKCS11, secKeyBlob, "123456", "*"); sftp.SSHUser = "test"; sftp.SSHLogon("myhost", 22);`
99 (cstAuto)	The store type is automatically detected from the input data. This setting may be used with both public and private keys and can detect any of the supported formats automatically.

ssl_accept_server_cert_subject_alt_names Property

This property contains comma-separated lists of alternative subject names for the certificate.

Syntax

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

This property contains comma-separated lists of alternative subject names for the certificate.

This property is read-only.

ssl_accept_server_cert_thumbprint_md5 Property

This property contains the MD5 hash of the certificate.

Syntax

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

This property contains 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

This property contains the SHA-1 hash of the certificate.

Syntax

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

This property contains 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

This property contains the SHA-256 hash of the certificate.

Syntax

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

This property contains 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

This property contains the text description of UsageFlags .

Syntax

def get_ssl_accept_server_cert_usage() -> str: ...

ssl_accept_server_cert_usage = property(get_ssl_accept_server_cert_usage, None)

Default Value

Remarks

This property contains the text description of ssl_accept_server_cert_usage_flags.

This value will be of 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

This property contains the flags that show intended use for the certificate.

Syntax

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

Remarks

This property contains the flags that show intended use for the certificate. The value of ssl_accept_server_cert_usage_flags 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 property for a text representation of ssl_accept_server_cert_usage_flags.

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

This property is read-only.

ssl_accept_server_cert_version Property

This property contains the certificate's version number.

Syntax

def get_ssl_accept_server_cert_version() -> str: ...

ssl_accept_server_cert_version = property(get_ssl_accept_server_cert_version, None)

Default Value

Remarks

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

This property is read-only.

ssl_accept_server_cert_subject Property

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

Syntax

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

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

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

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

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

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

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

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


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_encoded Property

This is the certificate (PEM/Base64 encoded).

Syntax

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

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

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

ssl_authenticate_clients Property

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

Syntax

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

ssl_authenticate_clients = property(get_ssl_authenticate_clients, set_ssl_authenticate_clients)

Default Value

FALSE

Remarks

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

ssl_cert_effective_date Property

This is the date on which this certificate becomes valid.

Syntax

def get_ssl_cert_effective_date() -> str: ...

ssl_cert_effective_date = property(get_ssl_cert_effective_date, None)

Default Value

Remarks

23-Jan-2000 15:00:00.

This property is read-only.

ssl_cert_expiration_date Property

This is the date the certificate expires.

Syntax

def get_ssl_cert_expiration_date() -> str: ...

ssl_cert_expiration_date = property(get_ssl_cert_expiration_date, None)

Default Value

Remarks

23-Jan-2001 15:00:00.

This property is read-only.

ssl_cert_extended_key_usage Property

This is a comma-delimited list of extended key usage identifiers.

Syntax

def get_ssl_cert_extended_key_usage() -> str: ...

ssl_cert_extended_key_usage = property(get_ssl_cert_extended_key_usage, None)

Default Value

Remarks

This is 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

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

Syntax

def get_ssl_cert_fingerprint() -> str: ...

ssl_cert_fingerprint = property(get_ssl_cert_fingerprint, None)

Default Value

Remarks

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

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

Syntax

def get_ssl_cert_fingerprint_sha1() -> str: ...

ssl_cert_fingerprint_sha1 = property(get_ssl_cert_fingerprint_sha1, None)

Default Value

Remarks

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

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

Syntax

def get_ssl_cert_fingerprint_sha256() -> str: ...

ssl_cert_fingerprint_sha256 = property(get_ssl_cert_fingerprint_sha256, None)

Default Value

Remarks

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

This is the issuer of the certificate.

Syntax

def get_ssl_cert_issuer() -> str: ...

ssl_cert_issuer = property(get_ssl_cert_issuer, None)

Default Value

Remarks

This is 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

This is the private key of the certificate (if available).

Syntax

def get_ssl_cert_private_key() -> str: ...

ssl_cert_private_key = property(get_ssl_cert_private_key, None)

Default Value

Remarks

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

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

This property is read-only.

ssl_cert_private_key_available Property

This property shows whether a PrivateKey is available for the selected certificate.

Syntax

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

This property shows whether a ssl_cert_private_key is available for the selected certificate. If ssl_cert_private_key_available 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

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

Syntax

def get_ssl_cert_private_key_container() -> str: ...

ssl_cert_private_key_container = property(get_ssl_cert_private_key_container, None)

Default Value

Remarks

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

This property is read-only.

ssl_cert_public_key Property

This is the public key of the certificate.

Syntax

def get_ssl_cert_public_key() -> str: ...

ssl_cert_public_key = property(get_ssl_cert_public_key, None)

Default Value

Remarks

This is 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

This property contains the textual description of the certificate's public key algorithm.

Syntax

def get_ssl_cert_public_key_algorithm() -> str: ...

ssl_cert_public_key_algorithm = property(get_ssl_cert_public_key_algorithm, None)

Default Value

Remarks

This property is read-only.

ssl_cert_public_key_length Property

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

Syntax

def get_ssl_cert_public_key_length() -> int: ...

ssl_cert_public_key_length = property(get_ssl_cert_public_key_length, None)

Default Value

Remarks

This is 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

This is the serial number of the certificate encoded as a string.

Syntax

def get_ssl_cert_serial_number() -> str: ...

ssl_cert_serial_number = property(get_ssl_cert_serial_number, None)

Default Value

Remarks

This is 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 property contains the text description of the certificate's signature algorithm.

Syntax

def get_ssl_cert_signature_algorithm() -> str: ...

ssl_cert_signature_algorithm = property(get_ssl_cert_signature_algorithm, None)

Default Value

Remarks

This property is read-only.

ssl_cert_store Property

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

Syntax

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

ssl_cert_store = property(get_ssl_cert_store, set_ssl_cert_store)

Default Value

"MY"

Remarks

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

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

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

Designations of certificate stores are platform dependent.

The following 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.

ssl_cert_store_password Property

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

Syntax

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

ssl_cert_store_password = property(get_ssl_cert_store_password, set_ssl_cert_store_password)

Default Value

Remarks

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

ssl_cert_store_type Property

This is the type of certificate store for this certificate.

Syntax

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

ssl_cert_store_type = property(get_ssl_cert_store_type, set_ssl_cert_store_type)

Default Value

Remarks

This is the type of certificate store for this certificate.


0 (cstUser - default)	For Windows, this specifies that the certificate store is a certificate store owned by the current user. Note: This store type is not available in Java.
1 (cstMachine)	For Windows, this specifies that the certificate store is a machine store. Note: This store type is not available in Java.
2 (cstPFXFile)	The certificate store is the name of a PFX (PKCS#12) file containing certificates.
3 (cstPFXBlob)	The certificate store is a string (binary or Base64-encoded) representing a certificate store in PFX (PKCS#12) format.
4 (cstJKSFile)	The certificate store is the name of a Java Key Store (JKS) file containing certificates. Note: This store type is only available in Java.
5 (cstJKSBlob)	The certificate store is a string (binary or Base64-encoded) representing a certificate store in Java Key Store (JKS) format. Note: This store type is only available in Java.
6 (cstPEMKeyFile)	The certificate store is the name of a PEM-encoded file that contains a private key and an optional certificate.
7 (cstPEMKeyBlob)	The certificate store is a string (binary or Base64-encoded) that contains a private key and an optional certificate.
8 (cstPublicKeyFile)	The certificate store is the name of a file that contains a PEM- or DER-encoded public key certificate.
9 (cstPublicKeyBlob)	The certificate store is a string (binary or Base64-encoded) that contains a PEM- or DER-encoded public key certificate.
10 (cstSSHPublicKeyBlob)	The certificate store is a string (binary or Base64-encoded) that contains an SSH-style public key.
11 (cstP7BFile)	The certificate store is the name of a PKCS#7 file containing certificates.
12 (cstP7BBlob)	The certificate store is a string (binary) representing a certificate store in PKCS#7 format.
13 (cstSSHPublicKeyFile)	The certificate store is the name of a file that contains an SSH-style public key.
14 (cstPPKFile)	The certificate store is the name of a file that contains a PPK (PuTTY Private Key).
15 (cstPPKBlob)	The certificate store is a string (binary) that contains a PPK (PuTTY Private Key).
16 (cstXMLFile)	The certificate store is the name of a file that contains a certificate in XML format.
17 (cstXMLBlob)	The certificate store is a string that contains a certificate in XML format.
18 (cstJWKFile)	The certificate store is the name of a file that contains a JWK (JSON Web Key).
19 (cstJWKBlob)	The certificate store is a string that contains a JWK (JSON Web Key).
21 (cstBCFKSFile)	The certificate store is the name of a file that contains a BCFKS (Bouncy Castle FIPS Key Store). Note: This store type is only available in Java and .NET.
22 (cstBCFKSBlob)	The certificate store is a string (binary or Base64-encoded) representing a certificate store in BCFKS (Bouncy Castle FIPS Key Store) format. Note: This store type is only available in Java and .NET.
23 (cstPKCS11)	The certificate is present on a physical security key accessible via a PKCS#11 interface. To use a security key, the necessary data must first be collected using the CertMgr class. The list_store_certificates method may be called after setting cert_store_type to `cstPKCS11`, cert_store_password to the PIN, and cert_store to the full path of the PKCS#11 DLL. The certificate information returned in the on_cert_list event's `CertEncoded` parameter may be saved for later use. When using a certificate, pass the previously saved security key information as the ssl_cert_store and set ssl_cert_store_password to the PIN. Code Example. SSH Authentication with Security Key: `certmgr.CertStoreType = CertStoreTypes.cstPKCS11; certmgr.OnCertList += (s, e) => { secKeyBlob = e.CertEncoded; }; certmgr.CertStore = @"C:\Program Files\OpenSC Project\OpenSC\pkcs11\opensc-pkcs11.dll"; certmgr.CertStorePassword = "123456"; //PIN certmgr.ListStoreCertificates(); sftp.SSHCert = new Certificate(CertStoreTypes.cstPKCS11, secKeyBlob, "123456", "*"); sftp.SSHUser = "test"; sftp.SSHLogon("myhost", 22);`
99 (cstAuto)	The store type is automatically detected from the input data. This setting may be used with both public and private keys and can detect any of the supported formats automatically.

ssl_cert_subject_alt_names Property

This property contains comma-separated lists of alternative subject names for the certificate.

Syntax

def get_ssl_cert_subject_alt_names() -> str: ...

ssl_cert_subject_alt_names = property(get_ssl_cert_subject_alt_names, None)

Default Value

Remarks

This property contains comma-separated lists of alternative subject names for the certificate.

This property is read-only.

ssl_cert_thumbprint_md5 Property

This property contains the MD5 hash of the certificate.

Syntax

def get_ssl_cert_thumbprint_md5() -> str: ...

ssl_cert_thumbprint_md5 = property(get_ssl_cert_thumbprint_md5, None)

Default Value

Remarks

This property contains 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

This property contains the SHA-1 hash of the certificate.

Syntax

def get_ssl_cert_thumbprint_sha1() -> str: ...

ssl_cert_thumbprint_sha1 = property(get_ssl_cert_thumbprint_sha1, None)

Default Value

Remarks

This property contains 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

This property contains the SHA-256 hash of the certificate.

Syntax

def get_ssl_cert_thumbprint_sha256() -> str: ...

ssl_cert_thumbprint_sha256 = property(get_ssl_cert_thumbprint_sha256, None)

Default Value

Remarks

This property contains 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

This property contains the text description of UsageFlags .

Syntax

def get_ssl_cert_usage() -> str: ...

ssl_cert_usage = property(get_ssl_cert_usage, None)

Default Value

Remarks

This property contains the text description of ssl_cert_usage_flags.

This value will be of 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

This property contains the flags that show intended use for the certificate.

Syntax

def get_ssl_cert_usage_flags() -> int: ...

ssl_cert_usage_flags = property(get_ssl_cert_usage_flags, None)

Default Value

Remarks

This property contains the flags that show intended use for the certificate. The value of ssl_cert_usage_flags 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 property for a text representation of ssl_cert_usage_flags.

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

This property is read-only.

ssl_cert_version Property

This property contains the certificate's version number.

Syntax

def get_ssl_cert_version() -> str: ...

ssl_cert_version = property(get_ssl_cert_version, None)

Default Value

Remarks

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

This property is read-only.

ssl_cert_subject Property

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

Syntax

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

ssl_cert_subject = property(get_ssl_cert_subject, set_ssl_cert_subject)

Default Value

Remarks

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

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

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

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

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


Field	Meaning
CN	Common Name. This is commonly a 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_encoded Property

This is the certificate (PEM/Base64 encoded).

Syntax

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

ssl_cert_encoded = property(get_ssl_cert_encoded, set_ssl_cert_encoded)

Default Value

Remarks

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

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

ssl_enabled Property

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

Syntax

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. Setting ssl_start_mode will automatically update this property value.

ssl_server_cert_effective_date Property

This is the date on which this certificate becomes valid.

Syntax

def get_ssl_server_cert_effective_date() -> str: ...

ssl_server_cert_effective_date = property(get_ssl_server_cert_effective_date, None)

Default Value

Remarks

23-Jan-2000 15:00:00.

This property is read-only.

ssl_server_cert_expiration_date Property

This is the date the certificate expires.

Syntax

def get_ssl_server_cert_expiration_date() -> str: ...

ssl_server_cert_expiration_date = property(get_ssl_server_cert_expiration_date, None)

Default Value

Remarks

23-Jan-2001 15:00:00.

This property is read-only.

ssl_server_cert_extended_key_usage Property

This is a comma-delimited list of extended key usage identifiers.

Syntax

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

This is 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

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

Syntax

def get_ssl_server_cert_fingerprint() -> str: ...

ssl_server_cert_fingerprint = property(get_ssl_server_cert_fingerprint, None)

Default Value

Remarks

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

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

Syntax

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 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

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

Syntax

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 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

This is the issuer of the certificate.

Syntax

def get_ssl_server_cert_issuer() -> str: ...

ssl_server_cert_issuer = property(get_ssl_server_cert_issuer, None)

Default Value

Remarks

This is 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

This is the private key of the certificate (if available).

Syntax

def get_ssl_server_cert_private_key() -> str: ...

ssl_server_cert_private_key = property(get_ssl_server_cert_private_key, None)

Default Value

Remarks

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

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

This property is read-only.

ssl_server_cert_private_key_available Property

This property shows whether a PrivateKey is available for the selected certificate.

Syntax

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

This property shows whether a ssl_server_cert_private_key is available for the selected certificate. If ssl_server_cert_private_key_available 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

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

Syntax

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

This is the name of the ssl_server_cert_private_key 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

This is the public key of the certificate.

Syntax

def get_ssl_server_cert_public_key() -> str: ...

ssl_server_cert_public_key = property(get_ssl_server_cert_public_key, None)

Default Value

Remarks

This is 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

This property contains the textual description of the certificate's public key algorithm.

Syntax

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

This property is read-only.

ssl_server_cert_public_key_length Property

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

Syntax

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

Remarks

This is 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

This is the serial number of the certificate encoded as a string.

Syntax

def get_ssl_server_cert_serial_number() -> str: ...

ssl_server_cert_serial_number = property(get_ssl_server_cert_serial_number, None)

Default Value

Remarks

This is 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 property contains the text description of the certificate's signature algorithm.

Syntax

def get_ssl_server_cert_signature_algorithm() -> str: ...

ssl_server_cert_signature_algorithm = property(get_ssl_server_cert_signature_algorithm, None)

Default Value

Remarks

This property is read-only.

ssl_server_cert_store Property

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

Syntax

def get_ssl_server_cert_store() -> bytes: ...

ssl_server_cert_store = property(get_ssl_server_cert_store, None)

Default Value

"MY"

Remarks

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

The ssl_server_cert_store_type property denotes the type of the certificate store specified by ssl_server_cert_store. If the store is password protected, specify the password in ssl_server_cert_store_password.

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

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

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

This is the type of certificate store for this certificate.

Syntax

def get_ssl_server_cert_store_type() -> int: ...

ssl_server_cert_store_type = property(get_ssl_server_cert_store_type, None)

Default Value

Remarks

This is the type of certificate store for this certificate.


0 (cstUser - default)	For Windows, this specifies that the certificate store is a certificate store owned by the current user. Note: This store type is not available in Java.
1 (cstMachine)	For Windows, this specifies that the certificate store is a machine store. Note: This store type is not available in Java.
2 (cstPFXFile)	The certificate store is the name of a PFX (PKCS#12) file containing certificates.
3 (cstPFXBlob)	The certificate store is a string (binary or Base64-encoded) representing a certificate store in PFX (PKCS#12) format.
4 (cstJKSFile)	The certificate store is the name of a Java Key Store (JKS) file containing certificates. Note: This store type is only available in Java.
5 (cstJKSBlob)	The certificate store is a string (binary or Base64-encoded) representing a certificate store in Java Key Store (JKS) format. Note: This store type is only available in Java.
6 (cstPEMKeyFile)	The certificate store is the name of a PEM-encoded file that contains a private key and an optional certificate.
7 (cstPEMKeyBlob)	The certificate store is a string (binary or Base64-encoded) that contains a private key and an optional certificate.
8 (cstPublicKeyFile)	The certificate store is the name of a file that contains a PEM- or DER-encoded public key certificate.
9 (cstPublicKeyBlob)	The certificate store is a string (binary or Base64-encoded) that contains a PEM- or DER-encoded public key certificate.
10 (cstSSHPublicKeyBlob)	The certificate store is a string (binary or Base64-encoded) that contains an SSH-style public key.
11 (cstP7BFile)	The certificate store is the name of a PKCS#7 file containing certificates.
12 (cstP7BBlob)	The certificate store is a string (binary) representing a certificate store in PKCS#7 format.
13 (cstSSHPublicKeyFile)	The certificate store is the name of a file that contains an SSH-style public key.
14 (cstPPKFile)	The certificate store is the name of a file that contains a PPK (PuTTY Private Key).
15 (cstPPKBlob)	The certificate store is a string (binary) that contains a PPK (PuTTY Private Key).
16 (cstXMLFile)	The certificate store is the name of a file that contains a certificate in XML format.
17 (cstXMLBlob)	The certificate store is a string that contains a certificate in XML format.
18 (cstJWKFile)	The certificate store is the name of a file that contains a JWK (JSON Web Key).
19 (cstJWKBlob)	The certificate store is a string that contains a JWK (JSON Web Key).
21 (cstBCFKSFile)	The certificate store is the name of a file that contains a BCFKS (Bouncy Castle FIPS Key Store). Note: This store type is only available in Java and .NET.
22 (cstBCFKSBlob)	The certificate store is a string (binary or Base64-encoded) representing a certificate store in BCFKS (Bouncy Castle FIPS Key Store) format. Note: This store type is only available in Java and .NET.
23 (cstPKCS11)	The certificate is present on a physical security key accessible via a PKCS#11 interface. To use a security key, the necessary data must first be collected using the CertMgr class. The list_store_certificates method may be called after setting cert_store_type to `cstPKCS11`, cert_store_password to the PIN, and cert_store to the full path of the PKCS#11 DLL. The certificate information returned in the on_cert_list event's `CertEncoded` parameter may be saved for later use. When using a certificate, pass the previously saved security key information as the ssl_server_cert_store and set ssl_server_cert_store_password to the PIN. Code Example. SSH Authentication with Security Key: `certmgr.CertStoreType = CertStoreTypes.cstPKCS11; certmgr.OnCertList += (s, e) => { secKeyBlob = e.CertEncoded; }; certmgr.CertStore = @"C:\Program Files\OpenSC Project\OpenSC\pkcs11\opensc-pkcs11.dll"; certmgr.CertStorePassword = "123456"; //PIN certmgr.ListStoreCertificates(); sftp.SSHCert = new Certificate(CertStoreTypes.cstPKCS11, secKeyBlob, "123456", "*"); sftp.SSHUser = "test"; sftp.SSHLogon("myhost", 22);`
99 (cstAuto)	The store type is automatically detected from the input data. This setting may be used with both public and private keys and can detect any of the supported formats automatically.

This property is read-only.

ssl_server_cert_subject_alt_names Property

This property contains comma-separated lists of alternative subject names for the certificate.

Syntax

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

This property contains comma-separated lists of alternative subject names for the certificate.

This property is read-only.

ssl_server_cert_thumbprint_md5 Property

This property contains the MD5 hash of the certificate.

Syntax

def get_ssl_server_cert_thumbprint_md5() -> str: ...

ssl_server_cert_thumbprint_md5 = property(get_ssl_server_cert_thumbprint_md5, None)

Default Value

Remarks

This property contains 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

This property contains the SHA-1 hash of the certificate.

Syntax

def get_ssl_server_cert_thumbprint_sha1() -> str: ...

ssl_server_cert_thumbprint_sha1 = property(get_ssl_server_cert_thumbprint_sha1, None)

Default Value

Remarks

This property contains 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

This property contains the SHA-256 hash of the certificate.

Syntax

def get_ssl_server_cert_thumbprint_sha256() -> str: ...

ssl_server_cert_thumbprint_sha256 = property(get_ssl_server_cert_thumbprint_sha256, None)

Default Value

Remarks

This property contains 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

This property contains the text description of UsageFlags .

Syntax

def get_ssl_server_cert_usage() -> str: ...

ssl_server_cert_usage = property(get_ssl_server_cert_usage, None)

Default Value

Remarks

This property contains the text description of ssl_server_cert_usage_flags.

This value will be of 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

This property contains the flags that show intended use for the certificate.

Syntax

def get_ssl_server_cert_usage_flags() -> int: ...

ssl_server_cert_usage_flags = property(get_ssl_server_cert_usage_flags, None)

Default Value

Remarks

This property contains the flags that show intended use for the certificate. The value of ssl_server_cert_usage_flags 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 property for a text representation of ssl_server_cert_usage_flags.

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

This property is read-only.

ssl_server_cert_version Property

This property contains the certificate's version number.

Syntax

def get_ssl_server_cert_version() -> str: ...

ssl_server_cert_version = property(get_ssl_server_cert_version, None)

Default Value

Remarks

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

This property is read-only.

ssl_server_cert_subject Property

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

Syntax

def get_ssl_server_cert_subject() -> str: ...

ssl_server_cert_subject = property(get_ssl_server_cert_subject, None)

Default Value

Remarks

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

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

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

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

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


Field	Meaning
CN	Common Name. This is commonly a 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_encoded Property

This is the certificate (PEM/Base64 encoded).

Syntax

def get_ssl_server_cert_encoded() -> bytes: ...

ssl_server_cert_encoded = property(get_ssl_server_cert_encoded, None)

Default Value

Remarks

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

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

This property is read-only.

timeout Property

A timeout for the class.

Syntax

def get_timeout() -> int: ...
def set_timeout(value: int) -> None: ...

timeout = property(get_timeout, set_timeout)

Default Value

Remarks

This property specifies the number of seconds that the class should wait, synchronously, for a response to be received. A value of 0 means that the class will send the request data (when operating in client mode) or the response data (when operating in server mode) asynchronously, and then wait indefinitely, firing the applicable event once complete.

The class will use do_events to enter an efficient wait loop during any potential waiting period, ensuring 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 response has not yet been received, the class throws an exception.

use_confirmable_messages Property

Whether to use confirmable message.

Syntax

def get_use_confirmable_messages() -> bool: ...
def set_use_confirmable_messages(value: bool) -> None: ...

use_confirmable_messages = property(get_use_confirmable_messages, set_use_confirmable_messages)

Default Value

TRUE

Remarks

This property specifies whether the class should send requests (if operating in client mode; i.e., when the listening property is disabled) or responses (if operating in server mode; i.e., when the listening property is enabled) using confirmable messages instead of unconfirmable messages.

Using confirmable messages increases reliability, since the class will automatically retransmit a message until it receives a confirmation from the remote host that the message was received. Note that the retransmission period is not infinite; eventually the class will assume that the message is undeliverable and time out the retransmission process.

Using non-confirmable messages reduces the amount of network traffic, but at the cost of reliability, since the class has no way to know whether a given message was received by the remote host, or lost in transit.

cancel_request Method

Cancels a pending request.

Syntax

def cancel_request(request_id: str) -> None: ...

Remarks

This method cancels the request in the pending_requests properties identified by RequestId.

When the class is operating in client mode, the requests in the pending_requests properties represent outgoing requests for which responses have not yet been received. Canceling one will cause the on_request_complete event to fire with an appropriate ErrorCode and ErrorDescription.

When the class is operating in server mode, the requests in the pending_requests properties represent incoming requests for which responses have not yet been sent. Canceling one will cause the on_response_complete event to fire with an appropriate ErrorCode and ErrorDescription.

config Method

Sets or retrieves a configuration setting.

Syntax

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

Remarks

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

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

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

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

delete Method

Sends a DELETE request to the server.

Syntax

def delete(uri: str) -> str: ...

Remarks

This method sends the server a DELETE request for the resource identified by URI. If the request_e_tag property is non-empty, its value will be used to include an Etag option in the request. Any additional options present in the request_options properties will be included as well.

The format of the URI parameter is coap://hostname:port/resource. The port is optional, and if not specified will default to 5683. For instance coap://myserver/test and coap://myserver:5683/test are equivalent.

If the use_confirmable_messages property is enabled when this method is called, the class will automatically retransmit the request message (if necessary) until it receives confirmation from the server that it was received. Note that the retransmission period is not infinite; eventually the class will assume that the message is undeliverable and time out the request.

If the timeout property is greater than 0, this method will block until either a response is received, the specified timeout interval elapses, or (if use_confirmable_messages is enabled) the retransmission period elapses; whichever occurs first. It will then return empty string.

If the timeout property is 0, a record of the request will be added to the pending_requests properties, and this method will finish immediately, returning an Id for the request. Passing this Id to the cancel_request method will cancel the request (assuming it is still pending at that time).

Once a response is received, or the request times out, the class will do the following:

Populate the Response* properties (unless the request timed out).
Remove the request record from the pending_requests properties, if necessary.
Fire the on_request_complete event.

Note: This method can only be called when the class is operating in client mode (i.e., when the listening property is disabled).

do_events Method

This method processes events from the internal message queue.

Syntax

def do_events() -> None: ...

Remarks

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

get Method

Sends a GET request to the server.

Syntax

def get(uri: str) -> str: ...

Remarks

This method sends the server a GET request for the resource identified by URI. If the request_e_tag property is non-empty, its value will be used to include an Etag option in the request. Any additional options present in the request_options properties will be included as well.

Once a response is received, or the request times out, the class will do the following:

Populate the Response* properties (unless the request timed out).
Remove the request record from the pending_requests properties, if necessary.
Fire the on_request_complete event.

Note: This method can only be called when the class is operating in client mode (i.e., when the listening property is disabled).

post Method

Sends a POST request to the server.

Syntax

def post(uri: str) -> str: ...

Remarks

This method sends the server a POST request for the resource identified by URI. The request_data property specifies the data that will be sent in the request. If the request_content_format and/or request_e_tag properties are non-empty, their values will be used to include Content-Format and Etag options in the request (respectively). Any additional options present in the request_options properties will be included as well.

Once a response is received, or the request times out, the class will do the following:

Populate the Response* properties (unless the request timed out).
Remove the request record from the pending_requests properties, if necessary.
Fire the on_request_complete event.

Note: This method can only be called when the class is operating in client mode (i.e., when the listening property is disabled).

put Method

Sends a PUT request to the server.

Syntax

def put(uri: str) -> str: ...

Remarks

This method sends the server a PUT request for the resource identified by URI. The request_data property specifies the data that will be sent in the request. If the request_content_format and/or request_e_tag properties are non-empty, their values will be used to include Content-Format and Etag options in the request (respectively). Any additional options present in the request_options properties will be included as well.

Once a response is received, or the request times out, the class will do the following:

Populate the Response* properties (unless the request timed out).
Remove the request record from the pending_requests properties, if necessary.
Fire the on_request_complete event.

Note: This method can only be called when the class is operating in client mode (i.e., when the listening property is disabled).

reset Method

This method will reset the class.

Syntax

def reset() -> None: ...

Remarks

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

send_custom_request Method

Sends a custom request to the server.

Syntax

def send_custom_request(uri: str, method: int) -> str: ...

Remarks

This method sends the server a custom request for the resource identified by URI. The Method parameter specifies the request's method code. The following table provides a (non-exhaustive) list of some of the more common method codes; refer to the IANA's CoAP Method Codes registry for a full list.


Method Code	Name
`1`	GET
`2`	POST
`3`	PUT
`4`	DELETE
`5`	FETCH
`6`	PATCH

The request_data property specifies the data that will be sent in the request. If the request_content_format and/or request_e_tag properties are non-empty, their values will be used to include Content-Format and Etag options in the request (respectively). Any additional options present in the request_options properties will be included as well.

Once a response is received, or the request times out, the class will do the following:

Populate the Response* properties (unless the request timed out).
Remove the request record from the pending_requests properties, if necessary.
Fire the on_request_complete event.

Note: This method can only be called when the class is operating in client mode (i.e., when the listening property is disabled).

send_notification Method

Sends a notification to all clients observing a given resource.

Syntax

def send_notification(uri: str) -> None: ...

Remarks

This method sends a notification to all clients observing the resource identified by URI, notifying them of its latest state. Clients should be notified whenever a resource's content changes (or periodically, if it changes very often) by sending a 2.xx response code; typically 2.03 "Valid" or 2.05 "Content". Clients should also be notified if a resource can no longer be observed (e.g., when it is deleted) by sending a notification with a non-2.xx response code (e.g., 4.04 "Not Found"). The class will automatically unregister all observers when a non-2.xx notification is sent.

The response_data property specifies the data that will be sent in the response, and the response_code property specifies the response code. If the response_content_format and/or response_e_tag properties are non-empty, their values will be used to include Content-Format and Etag options in the response (respectively). Any additional options present in the response_options properties will be included as well.

If the use_confirmable_messages property is enabled when this method is called, the class will automatically retransmit the response message (if necessary) until it receives confirmation from the client that it was received. Note that the retransmission period is not infinite; eventually the class will assume that the message is undeliverable and time out the response.

Note: This method can only be called when the class is operating in server mode (i.e., when the listening property is enabled).

send_response Method

Sends a response for a given pending request to the corresponding client.

Syntax

def send_response(request_id: str) -> None: ...

Remarks

This method sends a response for the request in the pending_requests properties identified by RequestId. The response_data property specifies the data that will be sent in the response, and the response_code property specifies the response code. If the response_content_format and/or response_e_tag properties are non-empty, their values will be used to include Content-Format and Etag options in the response (respectively). Any additional options present in the response_options properties will be included as well.

If the use_confirmable_messages property is disabled, the on_response_complete event will fire immediately instead, since there is no way to know whether the client received the response.

Note: This method can only be called when the class is operating in server mode (i.e., when the listening property is enabled).

start_listening Method

This method starts listening for incoming connections.

Syntax

def start_listening() -> None: ...

Remarks

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

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

start_observing Method

Registers the class as an observer for a given resource.

Syntax

def start_observing(uri: str) -> str: ...

Remarks

This method registers the class as an observer for the resource identified by URI. If the server accepts the registration, then it will periodically notify the class about any changes to the specified resource. These "change notifications" are exposed via the on_notification event.

This method operates in the exact same manner as the get method, with the exception of the two things listed below. Refer to the get method's documentation for more information.

When constructing the request, the class automatically includes an Observe option. The presence of this option is what indicates to the server that the class wishes to register itself as an observer for the specified resource.
When the server receives the request, its response causes the on_notification event to fire instead of the on_request_complete event. (Unless it decides to reject the registration, in which case it will handle the request just like a normal GET request, and the on_request_complete event will fire when its response is received, just like it would if get had been called.)

Once the class has successfully registered itself as an observer, the server will continue to deliver change notifications for the specified resource until the class unregisters, or the resource can no longer be observed (e.g., if it is deleted). To unregister, either call the stop_observing method with the same URI value, or set the on_notification event's StopObserving parameter to True.

Note: This method can only be called when the class is operating in client mode (i.e., when the listening property is disabled).

stop_listening Method

This method stops listening for new connections.

Syntax

def stop_listening() -> None: ...

Remarks

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

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

stop_observing Method

Unregisters the class as an observer for a given resource.

Syntax

def stop_observing(uri: str) -> None: ...

Remarks

This method unregisters the class as an observer for the resource identified by URI. This method operates in the exact same manner as the get method, with the exception of the two things below; refer to the get method's documentation for more information:

When constructing the request, the class automatically includes an Observe option with a value of 1. The presence of this option indicates to the server that the class wishes to unregister from further change notifications.
This method, unlike get, does not return a request Id.

Note: This method can only be called when the class is operating in client mode (i.e., when the listening property is disabled).

on_error Event

Fired when information is available about errors during data delivery.

Syntax

class CoAPErrorEventParams(object):
  @property
  def error_code() -> int: ...

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

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

Remarks

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

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

on_log Event

Fires once for each log message.

Syntax

class CoAPLogEventParams(object):
  @property
  def log_level() -> int: ...

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

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

Remarks

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

LogLevel indicates the level of the Message. Possible values are:


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

on_notification Event

Fires when a notification is received from the server.

Syntax

class CoAPNotificationEventParams(object):
  @property
  def uri() -> str: ...

  @property
  def is_latest() -> bool: ...

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

# In class CoAP:
@property
def on_notification() -> Callable[[CoAPNotificationEventParams], None]: ...
@on_notification.setter
def on_notification(event_hook: Callable[[CoAPNotificationEventParams], None]) -> None: ...

Remarks

This event fires when the class receives a notification from that server that some observed resource has changed. Query the response_code, response_data, response_content_format, response_e_tag, and response_options properties to obtain the new resource information.

Note that, in some cases, the server may no longer be able to deliver notifications for a resource (e.g., if it is deleted). In such cases, the response_code property will be populated with a non-2.xx code (e.g., 4.04 "Not Found") to indicate why the resource can no longer be observed. No further notifications will be delivered for the resource after such a notification arrives.

The URI parameter identifies the resource that has changed.

The IsLatest parameter reflects whether this notification actually has the most recent resource information available, since it is possible for notifications to arrive out of order under certain circumstances.

The StopObserving parameter specifies whether the class should stop observing the resource identified by URI. This parameter is False by default, set it to True to have the class unregister itself from further notifications. (Note: in the event of a non-2.xx notification, this parameter will be True by default instead, and changing it to False will have no effect.)

Note: This event is only used when the class is operating in client mode (i.e., when the listening property is disabled).

on_register Event

Fires when a client wishes to register for notifications.

Syntax

class CoAPRegisterEventParams(object):
  @property
  def remote_host() -> str: ...

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

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

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

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

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

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

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

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

# In class CoAP:
@property
def on_register() -> Callable[[CoAPRegisterEventParams], None]: ...
@on_register.setter
def on_register(event_hook: Callable[[CoAPRegisterEventParams], None]) -> None: ...

Remarks

This event fires anytime a client wishes to register itself as an observer for the resource identified by URI. Refer to the start_observing and send_notification methods, as well as the on_notification event, for more information about observing resources and resource change notifications.

Any options included in the request can be obtained by querying the request_options properties.

To correctly handle this event, populate the response_code, response_data, response_content_format, response_e_tag, and response_options properties as desired before this event finishes. (This must be done regardless of the Accept parameter's final value; see below for more information on why).

The RemoteHost parameter reflects the client's IP address or hostname.

The RemotePort parameter reflects the client's port.

The URI parameter reflects the exact resource URI that the client wishes to observe (the CoAP specification states that the full URI must be used to track observers). This value must be passed exactly as-is to the send_notification method to notify observers of changes to the resource.

The URIHost, URIPort, URIPath, and URIQuery parameters are provided for additional convenience

The Token parameter reflects the token included in the registration request.

The Accept parameter specifies whether the class should accept the registration. By default, it is False, and the request will be treated like a normal GET request. Setting it to True will cause the class to add the client to its internal list of registered observers for the specified URI.

Note: This event is only used when the class is operating in server mode (i.e., when the listening property is enabled).

on_request Event

Fires when a request is received from a client.

Syntax

class CoAPRequestEventParams(object):
  @property
  def remote_host() -> str: ...

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

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

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

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

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

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

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

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

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

# In class CoAP:
@property
def on_request() -> Callable[[CoAPRequestEventParams], None]: ...
@on_request.setter
def on_request(event_hook: Callable[[CoAPRequestEventParams], None]) -> None: ...

Remarks

This event fires anytime a request is received from a client. Information about the request is exposed both via this event's parameters and the following properties: request_data, request_content_format, request_e_tag, and request_options.

A response can either be sent back to the client immediately when the event finishes, or later using the send_response method. Refer to the RequestId and SendResponse parameters' documentation, below, for more information. If a response is to be sent back immediately, populate the response_code, response_data, response_content_format, response_e_tag, and response_options properties as desired before this event finishes.

The RemoteHost parameter reflects the client's IP address or hostname.

The RemotePort parameter reflects the client's port.

The Method parameter reflects the request method code. The following table provides a (non-exhaustive) list of some of the more common method codes; refer to the IANA's CoAP Method Codes registry for a full list.


Method Code	Name
`1`	GET
`2`	POST
`3`	PUT
`4`	DELETE
`5`	FETCH
`6`	PATCH

The URIHost, URIPort, URIPath, and URIQuery parameters, when taken together, identify the resource that the client is making a request against. This event exposes the URI in pieces for convenience.

The Token parameter reflects the token included in the request.

The RequestId parameter reflects the class-generated Id for the request. If the final value of the SendResponse parameter is False, this Id can be passed to the send_response method later to send a response. (Alternatively, it can be passed to the cancel_request later to ignore the request.)

The SendResponse parameter specifies whether the class should send a response back to the client immediately; it is True by default. Set it to False to send the response later instead.

Note: This event is only used when the class is operating in server mode (i.e., when the listening property is enabled).

on_request_complete Event

Fires when a request completes.

Syntax

class CoAPRequestCompleteEventParams(object):
  @property
  def method() -> int: ...

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

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

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

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

# In class CoAP:
@property
def on_request_complete() -> Callable[[CoAPRequestCompleteEventParams], None]: ...
@on_request_complete.setter
def on_request_complete(event_hook: Callable[[CoAPRequestCompleteEventParams], None]) -> None: ...

Remarks

This event fires when a request completes. Usually, a request is considered complete when a response has been received. However, requests can also be considered "complete" if either of the following occurs:

If the use_confirmable_messages property is enabled, and the class did not receive confirmation that the request was received before the retransmission period elapsed.
If timeout property is greater than 0, and the class did not receive a response before the timeout period elapsed.

Assuming a response was received (i.e., the ErrorCode parameter is either 0 or 709; see below), then the response code, payload, and options can be obtained by querying the response_code, response_data, response_content_format, response_e_tag, and response_options properties.


Method Code	Name
`1`	GET
`2`	POST
`3`	PUT
`4`	DELETE
`5`	FETCH
`6`	PATCH

The URI parameter reflects the requested resource's URI.

The ErrorCode parameter indicates whether the request encountered an error. If no error was encountered, it will be 0; if the server returned a non-2.xx response code, it will be 709; if some other error occurred (e.g., the request timed out), it will be another non-zero value.

The ErrorDescription parameter provides a description of the error that occurred (or, if ErrorCode is 709, a string version of the response code returned by the server). It will be empty if no error was encountered.

Note: This event is only used when the class is operating in client mode (i.e., when the listening property is disabled).

on_response_complete Event

Fires when a response has been sent to a client.

Syntax

class CoAPResponseCompleteEventParams(object):
  @property
  def request_id() -> str: ...

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

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

# In class CoAP:
@property
def on_response_complete() -> Callable[[CoAPResponseCompleteEventParams], None]: ...
@on_response_complete.setter
def on_response_complete(event_hook: Callable[[CoAPResponseCompleteEventParams], None]) -> None: ...

Remarks

This event fires anytime a response has been sent to a client. If the use_confirmable_messages property is enabled, then the response is considered complete once the client has confirmed that it received the response (or once the retransmission period elapses). If the use_confirmable_messages property is disabled, the response is considered complete immediately (since there is no way to know if the client received it).

The RequestId parameter reflects the class-generated Id of the request for which the response was sent.

The ErrorCode parameter indicates whether the response encountered an error (e.g., transmission timed out). If no error was encountered, it will be 0.

The ErrorDescription parameter provides a description of the error that occurred. It will be empty if no error was encountered.

Note: This event is only used when the class is operating in server mode (i.e., when the listening property is enabled).

on_ssl_client_authentication Event

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

Syntax

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

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

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

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

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

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

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

Remarks

This event enables the server to decide whether or not to continue. The Accept parameter is a recommendation on whether to continue or to close the connection. This is just a suggestion: application software must use its own logic to determine whether or not to continue.

When Accept is False, Status shows why the verification failed (otherwise, Status contains the string "OK").

on_ssl_server_authentication Event

Fired after the server presents its certificate to the client.

Syntax

class CoAPSSLServerAuthenticationEventParams(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 CoAP:
@property
def on_ssl_server_authentication() -> Callable[[CoAPSSLServerAuthenticationEventParams], None]: ...
@on_ssl_server_authentication.setter
def on_ssl_server_authentication(event_hook: Callable[[CoAPSSLServerAuthenticationEventParams], 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

class CoAPSSLStatusEventParams(object):
  @property
  def message() -> str: ...

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

Remarks

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

on_unregistered Event

Fires when a client has unregistered from notifications.

Syntax

class CoAPUnregisteredEventParams(object):
  @property
  def remote_host() -> str: ...

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

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

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

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

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

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

# In class CoAP:
@property
def on_unregistered() -> Callable[[CoAPUnregisteredEventParams], None]: ...
@on_unregistered.setter
def on_unregistered(event_hook: Callable[[CoAPUnregisteredEventParams], None]) -> None: ...

Remarks

This event fires anytime a client has unregistered itself from further notifications for the resource identified by URI. Refer to the start_observing and send_notification methods, as well as the on_notification and on_register events, for more information about observing resources and resource change notifications.

The RemoteHost parameter reflects the client's IP address or hostname.

The RemotePort parameter reflects the client's port.

The URI parameter identifies the resource that the client has stopped observing.

The URIHost, URIPort, URIPath, and URIQuery parameters are provided for additional convenience

Note: This event is only used when the class is operating in server mode (i.e., when the listening property is enabled).

CoAP Config Settings

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

CoAP Config Settings

MessageId: Sets the MessageId for a request.

The class will generate a MessageId automatically. This can be queried before sending a message or set to a value of your choice.

UseEmptyToken: Uses an empty value for the request token.

Set this to True to use an empty token value for requests. Set to False by default.

UseRawPublicKey: Whether to enable Raw Public Key mode.

When DTLS is enabled via ssl_enabled, the class supports Certificate mode DTLS as defined by RFC 7252. Set this to True to use Raw Public Key mode instead.

SSL Config Settings

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

When ssl_provider is set to Internal, this 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 event, which will fire each time an SSL packet is sent or received.

Enabling this configuration setting has no effect if ssl_provider is set to Platform.

OpenSSLCADir: The path to a directory containing CA certificates.

This functionality is available only when the provider is OpenSSL.

The path set by this property should point to a directory containing CA certificates in PEM format. The files each contain one CA certificate. The files are looked up by the CA subject name hash value, which must hence be available. If more than one CA certificate with the same name hash value exist, the extension must be different (e.g., 9d66eef0.0, 9d66eef0.1). 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 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:

-----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 event.

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

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

SSLClientCACerts: A newline separated list of CA certificates to use during SSL client certificate validation.

This configuration setting is only applicable to server components (e.g., TCPServer) see SSLServerCACerts for client components (e.g., TCPClient). This setting can be used to optionally specify one or more CA certificates to be used when verifying the client certificate that is presented by the client during the SSL handshake when 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:

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

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

This configuration setting enables the cipher suites to be used in SSL negotiation.

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

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

Multiple cipher suites are separated by semicolons.

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

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

Possible values when ssl_provider is set to Internal include the following:

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

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

TLS_AES_256_GCM_SHA384
TLS_CHACHA20_POLY1305_SHA256
TLS_AES_128_GCM_SHA256

SSLEnabledCipherSuites is used together with SSLCipherStrength.

SSLEnabledProtocols: Used to enable/disable the supported security protocols.

This configuration setting is used to enable or disable the supported security protocols.

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


TLS1.3	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 use the internal TLS implementation when the ssl_provider is set to Automatic for all editions.

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

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

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

SSLEnabledProtocols: SSL2 and SSL3 Notes:

SSL 2.0 and 3.0 are not supported by the class when the ssl_provider 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 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 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 event contains the full certificate chain. By default this value is False and only the leaf certificate will be present in the Encoded parameter of the on_ssl_server_authentication event.

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

SSLKeyLogFile: The location of a file where per-session secrets are written for debugging purposes.

This 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 is set to Internal.

SSLNegotiatedCipher: Returns the negotiated cipher suite.

This configuration setting returns the cipher suite negotiated during the SSL handshake.

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

SSLNegotiatedCipherStrength: Returns the negotiated cipher suite strength.

This configuration setting returns the strength of the cipher suite negotiated during the SSL handshake.

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

SSLNegotiatedCipherSuite: Returns the negotiated cipher suite.

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

SSLNegotiatedKeyExchange: Returns the negotiated key exchange algorithm.

This configuration setting returns the key exchange algorithm negotiated during the SSL handshake.

SSLNegotiatedKeyExchangeStrength: Returns the negotiated key exchange algorithm strength.

This configuration setting returns the strength of the key exchange algorithm negotiated during the SSL handshake.

SSLNegotiatedVersion: Returns the negotiated protocol version.

This configuration setting returns the protocol version negotiated during the SSL handshake.

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

SSLSecurityFlags: Flags that control certificate verification.

The following flags are defined (specified in hexadecimal notation). They can be ORed together to exclude multiple conditions:


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 for server components (e.g., TCPServer). This configuration setting can be used to optionally specify one or more CA certificates to be used when connecting to the server and verifying the server certificate. When verifying the server's certificate, the certificates trusted by the system will be used as part of the verification process. If the server's CA certificates are not installed to the trusted system store, they may be specified here so they are included when performing the verification process. This configuration setting should be set only if the server's CA certificates are not already trusted on the system and cannot be installed to the trusted system store.

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

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

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

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

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

The format of this value is a comma-separated list of hash-signature combinations. For instance: component.SSLProvider = TCPClientSSLProviders.sslpInternal; component.Config("SSLEnabledProtocols=3072"); //TLS 1.2 component.Config("TLS12SignatureAlgorithms=sha256-rsa,sha256-dsa,sha1-rsa,sha1-dsa"); The default value for this configuration setting is sha512-ecdsa,sha512-rsa,sha512-dsa,sha384-ecdsa,sha384-rsa,sha384-dsa,sha256-ecdsa,sha256-rsa,sha256-dsa,sha224-ecdsa,sha224-rsa,sha224-dsa,sha1-ecdsa,sha1-rsa,sha1-dsa.

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

TLS12SupportedGroups: The supported groups for ECC.

This configuration setting specifies a comma-separated list of named groups used in TLS 1.2 for ECC.

The default value is ecdhe_secp256r1,ecdhe_secp384r1,ecdhe_secp521r1.

When using TLS 1.2 and ssl_provider is set to Internal, the values refer to the supported groups for ECC. The following values are supported:

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

TLS13KeyShareGroups: The groups for which to pregenerate key shares.

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

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

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

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

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

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

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

TLS13SignatureAlgorithms: The allowed certificate signature algorithms.

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

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

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

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

This configuration setting specifies a comma-separated list of named groups used in TLS 1.3 for key exchange. This configuration setting should be modified only if there is a specific reason to do so.

The default value is ecdhe_x25519,ecdhe_x448,ecdhe_secp256r1,ecdhe_secp384r1,ecdhe_secp521r1,ffdhe_2048,ffdhe_3072,ffdhe_4096,ffdhe_6144,ffdhe_8192

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

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

UDP Config Settings

CaptureIPPacketInfo: Used to capture the packet information.

If this is set to True, the component will capture the IP packet information.

The default value for this setting is False.

Note: This configuration setting is available only in Windows.

DelayHostResolution: Whether the hostname is resolved when RemoteHost is set.

This configuration setting specifies whether a hostname is resolved immediately when remote_host is set. If True the class will resolve the hostname and the IP address will be present in the remote_host property. If False, the hostname is not resolved until needed by the component when a method to connect or send data is called. If desired, resolve_remote_host may be called to manually resolve the value in remote_host at any time.

The default value is False.

DestinationAddress: Used to get the destination address from the packet information.

If CaptureIPPacketInfo is set to True, then this will be populated with the packet's destination address when a packet is received. This information will be accessible in the DataIn event.

Note: This configuration setting is available only in Windows.

DontFragment: Used to set the Don't Fragment flag of outgoing packets.

When set to True, packets sent by the class will have the Don't Fragment flag set. The default value is False.

LocalHost: The name of the local host through which connections are initiated or accepted.

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

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

If the class is connected, the local_host 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.

MaxPacketSize: The maximum length of the packets that can be received.

This configuration setting specifies the maximum size of the datagrams that the class will accept without truncation.

QOSDSCPValue: Used to specify an arbitrary QOS/DSCP setting (optional).

UseConnection must be True to use this configuration setting. This option allows you to specify an arbitrary DSCP value between 0 and 63. The default is 0. When set to the default value, the component will not set a DSCP value.

Note: This configuration setting uses the qWAVE API and is available only on Windows 7, Windows Server 2008 R2, and later.

QOSTrafficType: Used to specify QOS/DSCP settings (optional).

UseConnection must be True to use this setting. You may specify either the text or integer values: BestEffort (0), Background (1), ExcellentEffort (2), AudioVideo (3), Voice (4), and Control (5).

Note: This configuration setting uses the qWAVE API and is available only on Windows Vista and Windows Server 2008 or above.

Note: QOSTrafficType must be set before setting active to True.

ShareLocalPort: If set to True, allows more than one instance of the class to be active on the same local port.

This option must be set before the class is activated through the active property or it will have no effect.

The default value for this setting is False.

SourceIPAddress: Used to set the source IP address used when sending a packet.

This configuration setting can be used to override the source IP address when sending a packet.

Note: This configuration setting is available only in Windows and requires that the winpcap library be installed (or npcap with winpcap compatibility).

SourceMacAddress: Used to set the source MAC address used when sending a packet.

This configuration setting can be used to override the source MAC address when sending a packet.

Note: This configuration setting is available only in Windows and requires that the winpcap library be installed (or npcap with winpcap compatibility).

UseConnection: Determines whether to use a connected socket.

UseConnection specifies whether or not the class should use a connected socket. The connection is defined as an association in between the local address/port and the remote address/port. As such, this is not a connection in the traditional Transmission Control Protocol (TCP) sense. It means only that the class will send and receive data to and from the specified destination.

The default value for this setting is False.

UseIPv6: Whether or not to use IPv6.

By default, the component expects an IPv4 address for local and remote host properties, and it will create an IPv4 socket. To use IPv6 instead, set this to True.

Socket Config Settings

AbsoluteTimeout: Determines whether timeouts are inactivity timeouts or absolute timeouts.

If AbsoluteTimeout is set to True, any method that does not complete within timeout seconds will be aborted. By default, AbsoluteTimeout is False, and the timeout is an inactivity timeout.

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

FirewallData: Used to send extra data to the firewall.

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

InBufferSize: The size in bytes of the incoming queue of the socket.

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

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

OutBufferSize: The size in bytes of the outgoing queue of the socket.

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

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

Base Config Settings

BuildInfo: Information about the product's build.

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

CodePage: The system code page used for Unicode to Multibyte translations.

The default code page is Unicode UTF-8 (65001).

The following is a list of valid code page identifiers:


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.

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

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

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

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

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

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

When set to True, the class will utilize the underlying operating system's certified APIs. Java editions, regardless of OS, utilize Bouncy Castle Federal Information Processing Standards (FIPS), while all other Windows editions make use of Microsoft security libraries.

FIPS mode can be enabled by setting the UseFIPSCompliantAPI configuration setting to True. This is a static setting that applies to all instances of all classes of the toolkit within the process. It is recommended to enable or disable this setting once before the component has been used to establish a connection. Enabling FIPS while an instance of the component is active and connected may result in unexpected behavior.

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

Note: This setting is applicable only on Windows.

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

UseInternalSecurityAPI: Whether or not to use the system security libraries or an internal implementation.

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

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

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

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

CoAP Errors

700	Invalid or malformed URI.
701	Invalid or malformed option.
702	Invalid block.
703	Malformed message.
704	Message transmission timed out.
705	Message rejected by remote host.
706	Invalid/unexpected request Id.
707	Invalid response code.
708	"Reset" message received from remote host.
709	Error response received from server. Refer to the error message for more information.
710	Observation not supported for the requested URI.
711	Request canceled.
712	The requested operation cannot be performed in the current mode.