Summary of C + + technical issues-5th TCP three-time handshake

Source: Internet
Author: User
Tags ack
TCP Three-time handshake
TCP provides a reliable connection service with three handshake confirmations to establish a connection.
There are 6 kinds of TCP flag bits.
syn:synchronous is set up online.
ack:acknowledgment confirmation.
psh:push transmission.
fin:finish ended.
rst:reset Reset.
urg:urgent Emergency.
The three-time handshake relies mainly on the SYN and ACK flag bits.
The handshake detailed flowchart is as follows.
The simplified steps can be described as.
a send syn=j to B.
After b detection, send ack=j+1,syn=k to a.
After a detection, send ack=k+1 to B.
 The connection is successful.
Related Article

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.