HP-UX C SIP Stack Programmer's Guide (Novembery 2007)

70 HP-UX C SIP Stack Programmer’s Guide

Call-leg re-INVITE (Modify) State Machine

RVSIP_CALL_LEG_MODIFY_STATE_REINVITE_REMOTE_ACCEPTED

The remote party accepted the re-INVITE request. This state will be reported

only if the manualAckOn2xx configuration parameter is set to RV_TRUE. In

this case, the ACK message will not be sent automatically and the application

must initiate the ACK message by calling the RvSipCallLegReInviteAck()

function.

RVSIP_CALL_LEG_MODIFY_STATE_REINVITE_CANCELLING

A CANCEL request was sent on the re-INVITE request.

RVSIP_CALL_LEG_MODIFY_STATE_REINVITE_PROCEEDING

A provisional response was received on an outgoing re-INVITE request. The

Modify state machine moves to this state from the REINVITE_SENT state

(meaning that this state is assumed only when the first provisional response is

received).

RVSIP_CALL_LEG_MODIFY_STATE_REINVITE_CANCELLED

Upon receiving a CANCEL request in the REINVITE_RCVD state, the SIP

Stack will automatically accept the CANCEL and move to the

REINVITE_CANCELLED state. A 487 response will be sent automatically as a

response to the INVITE request unless the SIP Stack is configured to work in

manual behavior mode, in which your application will be responsible for the

INVITE final response.

RVSIP_CALL_LEG_MODIFY_STATE_REINVITE_PROCEEDING_TIMEOUT

This state is assumed only if the SIP Stack is configured to enable the

INVITE_PROCEEDING_TIMEOUT state. The Modify state machine moves to

this state from the REINVITE_PROCEEDING state when the provisional timer

expires before receiving a final response to the re-INVITE request. In this state

the application can cancel the re-INVITE request or terminate the call-leg.

RVSIP_CALL_LEG_MODIFY_STATE_MSG_SEND_FAILURE

This state is assumed only if the SIP Stack is compiled with the Enhanced DNS

feature. The Modify state machine moves to this state from the

REINVITE_SENT state when the re-INVITE request receives a network error,

503 response, or timeout on the request. In this state your application can decide

to: