Vocal程序学习入门-优快云博客

本文链接：https://blog.youkuaiyun.com/flykobesummer/article/details/3338733

本文从VocalsipbaseBaseProxyTestMain.cxx入手，介绍了如何通过创建Builder和HeartlessProxy对象来运行Vocal程序。文章详细解释了Builder类的作用及其如何与HeartlessProxy对象交互，并说明了SipThread和WorkerThread的工作原理。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

从VocalsipbaseBaseProxyTestMain.cxx入手开始学习Vocal程序。
It is specified as a test program in the Makefile.
It creates Builder and HeartlessProxy objects and then runs the proxy object. SIP messages can then be sent to the Proxy IP address:port and will be passed to the Proxy Builder. After that, it is up the designer to add his/her message processing code.

首先建立了Builder对象。
Builder is a base class. It is passed Events by the WorkerThread. for processing. It is a Feature container. Feature is a State container.State is an Operator container. It also contains a pointer to the proxy CallContainer. A builder object is used in constructing a HeartLessProxy/BasicProxy object.

/* C++ 的成员初始化表， C++ Primer pg570 */
class Account {
    ...
    inline Account ()
                  : _name(0), _balance(0.0), _acct_nmbr(0)
     {} //_name = 0, _balance = 0.0, _acct_nmbr = 0
    ...
}

然后以Builder对象等为参数建立HeartLessProxy对象，该对象的run方法启动以下两个类的thread方法：

 SipThread
 SipThread is a ThreadIf. SipThread blocks on sipstack receive. On
 receiving a SipMsg it creates a SipEvent. The SipEvent then gets posted
 to fifo. The SipThread::thread() has the while loop.
 
 WorkerThread
 WorkerThread is a ThreadIf. It has a input queue on which it is blocked.
 The input queue contains sip proxy events.
 
 以上的总体工作就是新建两个线程，一个线程等待接收message，当收到的时候就建立event对象放
 入到FIFO队列；另一个线程从该FIFO队列中取出事件进行处理。

Vocal学习