Sets the connection to use for the outgoing signaling session before calling Participate. The initial Invite for the session will use this connection instead getting the connection based on endpoint settings. This method can be used only for SipPeerToPeer endpoint. Signaling sessions for SipEndpoint will use the connection maintained by SipEndpoint. The transport specified for the connection should be as secure as the tranport needed to send the Invite or else the Participate method call may fail. IMPORTANT: This is an advanced API. To work properly, the application should call this method before every redirect as well. The RedirectReceived event call back handler in the application should use TryThis and call this method before returning.

Waits for the pending accept operation to complete.

Waits for the pending establish operation to complete.

Waits for the pending participate operation to complete.

Waits for the pending refer operation to complete.

Waits for the pending renegotiate operation to complete.

Waits for the pending SendMessage operation to complete.

Waits for the pending SendProvisionalResponse operation to complete.

Waits for the pending SetConnection operation to complete.

Completes the pending Terminate operation.

Sets the connection to use for the outgoing signaling session before calling Participate. The initial Invite for the session will use this connection instead of getting the connection based on endpoint settings. This method can be used only for the SipPeerToPeer endpoint. Signaling sessions for SipEndpoint will use the connection maintained by SipEndpoint. The transport specified for the connection should be as secure as the tranport needed to send the Invite or else the Participate method call may fail. IMPORTANT: This is an advanced API. To work properly, the application should call this method before every redirect as well. The RedirectReceived event callback handler in the application should use TryThis and call this method before returning.

Terminates a session by rejecting the incoming invite. This method can be called only for an incoming session before participating in it.

Gets the session ID.

Gets the connection used by this signaling session. For incoming sessions, this property can be used to determine the address of the inviter. For outgoing sessions, this property can be used to retrieve information about the connection used. This property can return null if the connection does not exist at the moment.

Gets or sets the application's desired session timer interval (in seconds). This is used only for the initial invite or response.

Gets the endpoint associated with the session.

Gets the tag used in the "From" header. This property may return null if not available. For outgoing sessions, this property may not be available until the state is Alerted or Connected. For incoming sessions, the property may be available right away. This property can be null after the session is terminated. The application is responsible for caching the tag if it requires it after the session is disconnected.

Gets or sets the grid context for this session. If this property is set, the endpoint has GRUU, and the GRUU does not have grid, this grid value is added to GRUU in the contact header. This is useful to associate this grid with this specific session when the endpoint has GRUU, but no grid. The association should be done by the application.

Gets whether the session was initially received from a remote endpoint.

Gets or sets the value indicating if the session supports a session timer. The default value of this property is inherited from the endpoint. An application can override this property per session. If the session is already using a session timer, this flag will only affect the behavior when the next session refresh occurs. If the flag is turned on after the session is connected, the application needs to call ReNegotiateMediaDescription to enable the session timer.

Gets the local participant of the session. This is helpful to get the URI of the local participant which can differ from the URI of the endpoint, particularly for incoming sessions.

Gets the minimum session expires interval value (in seconds) currently used by this session.

Gets or sets the offer answer negotiation callback interface implemented by the caller.

Gets or sets the default policy for supporting 100rel extension feature. If an application supports this then the remote can ask for this when sending provisional responses which will result in PRACK message geting sent to acknowledge the response. An application should set this before sending Invite or else it may not have any effect.

Gets the remote participant of the session.

Gets the target of this session.

Gets the session timer interval (in seconds) currently used.

Gets the state of this session.

Gets the tag used in the "To" header. This property might return null if not available. For both outgoing and incoming sessions, this property may not available until the session is connected. This property can be null after the session is terminated. The application is responsible for caching the tag if it requires it after the session is disconnected.

Raised when the remote has accepted the invite. Typically, this happens when a successful response is received. This event is optional for an application. Applications that want to send headers in the acknowledgement can register for this event.

Raised when the invite process completes. Typically, this happens when the inviter acknowledges a successful response. This event is optional for an application. Applications that want to access headers in the acknowledgement can register for this event. Note that EndParticipate for the incoming side also exposes the Ack message. This event is provided for convenience.

Raised when a message is received.

Raised when the session received any provisional response (101-199).

Raised when a redirect request is received.

Raised when a new Refer is received.

Raised when the remote sends a re-invite. This event is optional for an application. Applications that want to access headers in the re-invite can register for this event.

Raised when the session is enabled for a session timer, the local endpoint is the refresher, and the remote does not support the UPDATE method. The application is responsible for calling BeginRenegotiateDescription to keep the session alive.

Raised when a request or response is received.

Raised when the state of the session changes.

Raised when the remote side terminates the session by sending a Bye or Cancel message. This event is optional for an application. This event is useful only if the application is interested in accessing the headers in the Bye or Cancel message for custom scenarios.