网络socket编程指南 Socket 编程让你沮丧吗？从man pages中很难得到有用的信息吗？你想跟上时代去编Internet相关的程序，但是为你在调用 connect() 前的bind() 的结构而不知所措？等等…-Network Socket Programming socket programming guide let you frustrated you? From the man pages it is difficult to get useful information?