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6.1传输层的作用
tobeavampire的博客
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6.1传输层的作用

TCP/IP中有两个具有代表性的传输层协议。

TCP：提供可靠的通信传输

UDP：则常被用于让广播和细节控制交给应用的通信传输

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通过端口号就可以识别在传输层上一层的应用层中所要进行处理的具体程序。

HTTP连接请求（客户端/服务端）

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