TCP 关闭连接的不同版本，哪个才是对的？

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This topic created in 1371 days ago, the information mentioned may be changed or developed.

看到网上有几种 TCP 关闭连接过程。

哪个才是对的？

来自： https://wiki.wireshark.org/TCP-4-times-close.md

来自： https://www.geeksforgeeks.org/why-tcp-connect-termination-need-4-way-handshake/


      TCP A                                                TCP B

  1.  ESTABLISHED                                          ESTABLISHED

  2.  (Close)
      FIN-WAIT-1  --> <SEQ=100><ACK=300><CTL=FIN,ACK>  --> CLOSE-WAIT

  3.  FIN-WAIT-2  <-- <SEQ=300><ACK=101><CTL=ACK>      <-- CLOSE-WAIT

  4.                                                       (Close)
      TIME-WAIT   <-- <SEQ=300><ACK=101><CTL=FIN,ACK>  <-- LAST-ACK

  5.  TIME-WAIT   --> <SEQ=101><ACK=301><CTL=ACK>      --> CLOSED

  6.  (2 MSL)
      CLOSED

                         Normal Close Sequence

来自官方文档： https://datatracker.ietf.org/doc/html/rfc793#page-39

我也是醉了。

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