This project was created as a semestral task for a networking subject at our uni. I was asked to develop custom TCP-like protocol inserted into the UDP protocol. This required proper understanding of both UDP and TCP protocols. I chose Python for this project because it felt the most straightforward to work with. At first, I had no idea how the project would function—I couldn’t even imagine the “magic” of transferring data from my laptop to a friend’s. However, signs of success appeared quickly. Within just a few days, I had implemented the basic functionality, and from there I focused on fine-tuning the code to improve stability and speed. After many hours of testing and refining, I was finally satisfied with the core system. I then had some fun experimenting with CLI animations - adding things like a loading bar while sending or receiving files, or notifications for peer disconnections. Following several more weeks of polishing and testing, I successfully built a system capable of sending and receiving text messages, any type of file, and system messages - all with maximum stability and reliability.
- Programming language: Python
- Netwok management: Socket programming (Python
socketmodule)
- Python
- CLI development
- Debugging and testing
- Socket programming
- TCP and UDP protocols
- Peer to Peer communication
- Port management
- Threading / Multiprocessing
- File I/O
Click on this image to watch preview:
clone the repo
cd path/to/repoconda create -n custom_tcp_env python=3.11
conda activate custom_tcp_envpip install crcmodpython3 main.py- Select device 1 and device 2
- Wait for handshake and sync
- enter
helpto find out what you can do