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

120 HP-UX C SIP Stack Programmer’s Guide

Using Transactions

USING

RANSACTIONS

The following sections present various ways of using transactions accompanied

by code samples. These sections include:

 Registering Application Callbacks

 Exchanging Handles with the Application

 Sending a Request

 Using the Outbound Message Mechanism

 Transaction Merging Support

REGISTERING

APPLICATION

CALLBACKS

To register an application callback, you must first define the callback according

to the prototype. The following code demonstrates an implementation of the

RvSipTransactionCreatedEv() and RvSipTransactionStateChangedEv() callback

functions.

Sample Code

The following sample code demonstrates an implementation of the

RvSipTransactionCreatedEv() callback function. In this sample, the application

indicates that it wishes to handle only the OPTIONS request. This means that

other requests will be handled automatically by the SIP Stack.