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Grokking Computer Networking for Software Engineers

A TCP Client-Server Program

Explore how to create TCP client-server programs in Python by understanding the three-way handshake, socket creation, and methods to handle data fragmentation and transmission reliability using sendall and custom receive functions.

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Introduction

There are a few key points to be noted about TCP programs:

  • TCP connect() calls induce full TCP three-way handshakes! As we saw in the last chapter, three-way handshakes can fail and so can connect() calls.

  • A new socket gets created for every new connection in a TCP architecture.

  • One socket on TCP servers is dedicated to continuously listen for ...