说明：  Linux下tcpip网络编程比较详细教材，有了它再配合《Unix网络编程实用技术与实例分析源代码》这本书，学习网络编程一定会事半功倍
(Tcpip network programming under Linux a more detailed textbook, with it together with " Unix network programming practical techniques and case analysis of the source code," This book will definitely be more efficiently learn network programming)