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TCP三次握手四次挥手-兔子拔萝卜
source link: http://blog.51cto.com/13871378/2162022
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一、TCP协议TCP是面向连接的、可靠的进程到进程通信的协议TCP提供全双工服务，即数据可在同一时间双向传输二、TCP报文段TCP将若干个字节构成一个分组，叫报文段（Segment）TCP报文段封装在IP数据报中TCP报文段序号：发送端为每个字节进行编号，便于接收端正确重组确认号：用于确认发送端的信ACK：确认序号位，当该位为1时，用于确认发送方的数据FIN：当TCP断开连接时将该位置为1SYN：
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