说明：  本书完整而详细地介绍了TCP/IP协议是如何实现的。书中给出了约500个图例，15 000行实际操作的C代码，采用举例教学的方法帮助你掌握TCP/IP实现。本书不仅说明了插口API和协议族的关系以及主机实现与路由器实现的差别。还介绍了4.4BSD-Lite版的新的特点，如多播、长肥管道支持、窗口缩放、时间戳选项以及其他主题等等。读者阅读本书时，应当具备卷1中阐述的关于TCP/IP的基本知识。 本书针对任何希望理解TCP/IP协议是如何实现的读者设计；无论是编写网络应用的程序员，负责利用TCP/TP维护计算机系统和网络的系统管理员，还是任何有兴趣理解大块非凡代码的普通读者；本书都是一本优秀的教科书。
(the book complete and detailed presentation of the TCP/IP protocol is how to achieve it. The book is about 500 Legend, OK 15000 actual operation of the C code, For the use of teaching methods to help you master the TCP/IP protocol. The book shows not only the socket API and agreements ethnic relations and hosts and routers to achieve the difference. Also introduced 4.4BSD-Lite version of the new features, such as multicast, long fat pipe, window zoom, timestamp options and other topics, etc.. Readers of this book, Volume 1 should have elaborated on the TCP/IP basic knowledge. The book against any hope to understand TCP/IP protocol is how to achieve the readers design; regardless of the preparation network application programmers, responsible for the use of TCP/TP maintain compute)