TCP & UDP Python Examples

This repository contains tiny Python exercises that demonstrate how TCP and UDP work in practice. They’re simple enough to run locally and are a great way to understand the difference between reliable (TCP) and fast but unreliable (UDP) communication.

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📦 Contents

• tcp_server.py → Simple TCP server
• tcp_client.py → Simple TCP client
• udp_server.py → Simple UDP server
• udp_client.py → Simple UDP client

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🚀 Getting Started

1. Clone the Repository

git clone https://github.com/dre86dre/TCP-UDP-Python-Examples.git

2. Run the TCP Example

In one terminal, start the server:

cd tcp_example

python tcp_server.py

In another terminal, run the client:

python tcp_client.py

You should see:

Server side → Received: Hello TCP Server!

Client side → Server says: Hello from TCP server!

✅ Messages are delivered reliably and in order.

3. Run the UDP Example

In one terminal, start the server:

cd udp_example

python udp_server.py

In another terminal, run the client:

python udp_client.py

You should see:

Server side → Received: Hello UDP Server! from ('127.0.0.1', <random_port>) Client side → Server says: Hello from UDP server!

⚠️ UDP is faster but does not guarantee delivery or ordering. If packets are dropped, they won’t be retried.

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📖 What You’ll Learn

TCP (Transmission Control Protocol)

• Reliable, ordered, error-checked communication.
• Used for web browsing, emails, file downloads.

UDP (User Datagram Protocol)

• Faster, lightweight, no guarantees.
• Used for video calls, online gaming, streaming.

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🛠 Requirements

• Python 3.x
• Works on Linux, macOS, or Windows

No external dependencies are needed.

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📝 License

This project is licensed under the MIT License.