soh2970/Python-chatroom

This project simulates the early days of networking by implementing a multi-user chatroom application using both TCP and UDP socket programming in Python. You are tasked with creating two versions of a chatroom server that allow clients to communicate in real-time: one using Transmission Control Protocol (TCP) and another using User Datagram Protocol (UDP).

To develop two concurrent server-client applications that:

• Use TCP and UDP protocols respectively.
• Handle multiple client connections in real-time.
• Support message broadcasting from the server to all connected clients.
• Manage client names and connections effectively.

• Multi-threaded server using TCP for reliable communication.
• Basic UDP-based version for lightweight messaging (to be implemented if not already).
• Concurrent handling of multiple clients.
• Unique username enforcement.
• Real-time broadcast of chat messages to all connected users.
• Graceful client connection and disconnection.

• Uses socket, select, and threading modules.
• Each client provides a username; duplicates are rejected.
• Incoming messages are broadcast to all connected clients.
• Clients are handled concurrently using threads.
• Server listens and accepts connections with timeout using select.select.

• Python 3.x

python chatroom.py

Modify the code to start the desired protocol (TCP or UDP).

• Clients connect and send a username.
• Server acknowledges or rejects based on username uniqueness.
• Messages sent by one client are distributed to all others.

• Only TCP is implemented in the current code. UDP support may require a parallel implementation.
• Username management ensures each participant is uniquely identified.
• This implementation is suitable for LAN-based chat simulations and educational purposes.

This project is part of CS 3357A - Computer Networks I at Western University. For academic use only.