旨在让读者了解tcp的实现原理，tcp协议是为了在主机间实现高可靠性包交换的传输协议，网络用途很广泛，通过源程序可以了解到些，深层次的还需看其他书，源程序包含一些网络编程技巧须好好理解掌握-Aims to enable readers to understand the realization of the principle tcp, tcp protocol between hosts in order to achieve high reliability in packet-switch