🔌 TCP & UDP Socket Programming using Python

A complete implementation of Client-Server Communication using Python's built-in socket library — covering both TCP and UDP protocols with real-time bidirectional messaging.

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TCP Server and Client communication

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📌 About This Project

This project demonstrates real-time Client-Server Communication using Python sockets. It implements both TCP (Transmission Control Protocol) and UDP (User Datagram Protocol) with features like timestamps, uppercase conversion, message counting, and graceful exit handling.

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📁 File Structure

Socket-Programming-Python/
│
├── tcp_server.py       # TCP Server Program
├── tcp_client.py       # TCP Client Program
├── udp_server.py       # UDP Server Program
├── udp_client.py       # UDP Client Program
└── README.md           # Project Documentation

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✨ Features

• ✅ TCP Client-Server Communication
• ✅ UDP Client-Server Communication
• ✅ Student Name & Registration Number on startup
• ✅ Timestamp on every message [HH:MM:SS]
• ✅ Messages automatically converted to UPPERCASE
• ✅ Message counter (tracks total messages sent)
• ✅ Type exit to gracefully end the session

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🔄 TCP vs UDP

Feature	TCP	UDP
Connection	Required	Not Required
Reliability	High ✅	Low ⚠️
Speed	Slower	Faster ⚡
Data Order	Guaranteed	Not Guaranteed
Port Used	12345	12346
Real-world Use	HTTP, FTP, Email	Streaming, Gaming, DNS

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🚀 How to Run

Prerequisites

python --version   # Make sure Python 3.x is installed

▶️ TCP Communication

Open two terminals simultaneously:

# Terminal 1 — Run Server FIRST
python tcp_server.py

# Terminal 2 — Run Client SECOND
python tcp_client.py

▶️ UDP Communication

# Terminal 1 — Run Server FIRST
python udp_server.py

# Terminal 2 — Run Client SECOND
python udp_client.py

⚠️ Always start the Server before the Client!

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💬 Sample Output

========================================
        UDP SERVER STARTED
  Student : Niha Hawas
========================================
Listening on 127.0.0.1:12346 ...
Waiting for messages...

[20:24:28] Client [1]: HELLO
  └ UPPERCASE: [NIHA HAWAS | 2312274] CLIENT: HELLO
Your Reply: HI

[20:24:46] Client [2]: HAVE YOU DONE YOUR TASK
  └ UPPERCASE: CLIENT: HAVE YOU DONE YOUR TASK
Your Reply: YES IT IS DONE

✅ UDP Server closed. Total messages handled: 7

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📋 Tasks Completed

#	Task	Status
1	TCP Server and Client communication	✅
2	UDP Server and Client communication	✅
3	Exchange at least 5 messages	✅ (7 messages)
4	Send Student Name and Registration Number	✅
⭐	Timestamps on every message	✅
⭐	Convert messages to UPPERCASE	✅
⭐	Terminate session with exit command	✅

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🛠️ Technologies Used

Tool	Purpose
Python 3.x	Core Language
socket module	Network Communication
VS Code	Development Environment
GitHub	Version Control

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📚 Concepts Covered

• Client-Server Architecture
• TCP — Connection-Oriented Communication
• UDP — Connectionless Communication
• Socket Binding, Listening & Accepting
• Real-time Bidirectional Messaging
• Data Encoding & Decoding over Sockets

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👩‍💻 Author

Niha Hawas

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📄 License

This project is licensed under the MIT License — feel free to use and modify.

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Made with ❤️ by Niha Hawas