本文针对上一章的代码实现改动为: diff。 其实实现完udp后，再实现tcp已经变得非常简单了。本文主要简述一下怎么实现tcp的状态转移相关功能。从这里你能从socket api来理解tcp是怎么达到可靠的。 实现后的协议栈效果如下： 首先tcp是面向连接的，第一步是连接 ...

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