控制现在返回到connect函数，该函数处于睡眠状态，直到协议层唤醒—指示连接现在是ESTABLISHED，或套接字上存在错误。
The control now returns to the connect function, which sleeps until the protocol layer wakes up-indicating that the connection is now ESTABLISHED or that there has been an error on the socket.
只有版本4可以使用有状态的连接，且只有版本 4 将TCP 用作其传输协议。
Only Version 4 can use stateful connections, and only Version 4 uses TCP as its transport protocol.
使用netstat，可以查看当前活动的连接（按单个协议进行查看），查看特定状态的连接（比如处于监听状态的服务器套接字）和许多其他的信息。
With netstat, you can view currently active connections (on a per-protocol basis), view connections in a particular state (such as server sockets in the listening state), and many others.
给出了面向非连接通信协议IP层的密码同步的解决方案和安全协议的运行状态图。
Set forth a cipher synchronization scheme in the connectionless oriented IP layer, also present the state transform map of this secure protocol.
其次，对SIP这个NGN软交换的核心协议进行深入的研究，分析SIP消息包的结构，理解SIP协议中规定的通信连接流程和状态机维护过程，建立了一个遵循协议规定的SIP协议栈模型。
Soft Switch and SIP that is mainstream application protocol in NGN are studied. The structure of SIP message and process of building connection are introduced, a SIP stack model is set to program.
其次，对SIP这个NGN软交换的核心协议进行深入的研究，分析SIP消息包的结构，理解SIP协议中规定的通信连接流程和状态机维护过程，建立了一个遵循协议规定的SIP协议栈模型。
Soft Switch and SIP that is mainstream application protocol in NGN are studied. The structure of SIP message and process of building connection are introduced, a SIP stack model is set to program.
应用推荐