说明：  使用开源SIP协议栈开发的一个小测试程序源码，包含UA与UAS两部分，完成最基本的publish会话。注：简单易懂起见，publish没有设置消息体。PJSIP，一个用C开发，功能强大大的开源SIP协议栈，使用用优秀的内存分配机制开发，运行速度快，支持IM、Presence、PIDF、rPIDF等最新RFC，能用来实现各种SIP应用。PJSIP下载见本站。
(The open source SIP stack developed a small test program source code, including the UA and UAS in two parts, to complete the most basic publish session. Note: straightforward reasons, publish does not set the message body. PJSIP, developed in C, a powerful open-source SIP stack, the use of development with excellent memory allocation mechanism, run faster, support IM, Presence, PIDF, rPIDF such as the RFC can be used to achieve a variety of SIP applications. PJSIP download to see this site.)