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Why does a confirmation need to be sent at the end when establishing a TCP connection?

藏色散人
Release: 2020-06-29 09:28:43
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A confirmation must be sent at the end of establishing a TCP connection because it is necessary to prevent the expired connection request segment from suddenly being transmitted to the TCP server to avoid errors. TCP, the Transmission Control Protocol, is a connection-oriented, reliable A transport layer communication protocol based on byte streams.

Why does a confirmation need to be sent at the end when establishing a TCP connection?

This is mainly to prevent the invalid connection request segment from suddenly being transmitted to the TCP server to avoid errors.

Introduction to TCP:

Transmission Control Protocol (TCP, Transmission Control Protocol) is a connection-oriented, reliable, byte-based Streaming transport layer communication protocol, defined by IETF's RFC 793.

TCP is designed to accommodate a layered protocol hierarchy that supports multiple network applications. TCP is relied upon to provide reliable communication services between pairs of processes in a host computer connected to different but interconnected computer communication networks. TCP assumes that it can obtain simple, possibly unreliable datagram services from lower-level protocols. In principle, TCP should be able to operate on top of a variety of communications systems, from hardwired connections to packet-switched or circuit-switched networks.

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