这是关于WinSock_TCP_keepalive内容的知识。 通信机制中，对方是否断开，有两种判断方法。 一种就是使用心跳包，另一种就是使用KEEPALIVE.这就是关于keepalive的介绍资料-This is on the WinSock_TCP_keepalive content knowledge. Communication mechanism, the other is disconnected, a two judging method. One is to use the heartbeat packet, another is the use of KEEPALIVE. this is the introduction of keepalive data