This tutorial will show you how to write a simple TCP socket client-server messenger in Python3 using python's standard socket module. We will use the ssl module to provide TLS to encrypt our messages securing our connection from malicious actors.
To follow along with this tutorial:
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Python version 3 or higher is required, including the command line tools so that we can execute python from our terminal.
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For Part2, having OpenSSL installed on you system would be beneficial, however, you can use the keys and certificates provided.
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A code editor would also come in quite handy; you can use Python IDLE or Visual studio code or even notepad.
To commence this tutorial, navigate to the code section of this repository, enter the PartX subdirectory. This tutorial is divided into three parts, each part available as a separate subdirectory. Then just follow the README.md
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Part 1 - TCP connection, data transfer, shutdown
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Part 2 - Secure with SSL/TLS
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Part 3 - Multiple clients, multi-threading, error handling
The RSA private key and SSL certificate generated for Part2 is purely for demonstration purposes. You should NEVER expose private keys by storing them on a public (or even private) repository. So it would be ill-advised to reuse the keys I have provided for any personal project.