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2020-08-19: what mechanism does TCP ensure reliability?

2020-11-06 21:55:46 Fuda Dajia architect's daily question

Fogo's answer 2020-08-19:

Fogo's pithy formula : school (jiao) It is true that Xu Zhen has a long history (tcp Reliability assurance mechanism : check 、 Serial number 、 confirm 、 Retransmission 、 congestion 、 Traffic 、 Connect )
check : Is the data correct .
Serial number : Number the data seq.
confirm :ACK.
Retransmission : Timeout retransmission and redundancy ACK Retransmission .
Congestion control : Slow start ( Slow start )、 Congestion avoidance 、 Fast retransmission 、 Fast recovery .
flow control : According to the ability of the receiver, the sending speed of the sender is determined .
Connect : Three handshakes and four waves .


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