This paper has analysed some important concept in UNIX socket programing. These concepts touch upon socket creating, transport layer port, protocol address, socket function call, etc.

• 本文对套接口编程中的一些核心概念进行了分析。这些概念涉及到套接口的建立机制、输层端口号、议地址、接口系统调用函数调用等概念。