Distributed Chat Server with Java NIO

Project roadmap

1. 01

   Set up the selector loop

   ~2h

   Create a non-blocking ServerSocketChannel and a Selector-based event loop.

2. 02

   Handle connection events

   ~2.5h

   Handle accept, read, and write events with per-client buffer management.

3. 03

   Implement the chat protocol

   ~2h

   Define a simple text protocol for join, leave, and message commands.

4. 04

   Add multi-room routing

   ~2h

   Route messages so they only broadcast to clients within the same room.

5. 05

   Handle edge cases

   ~2h

   Handle client disconnects and partial read/write buffer scenarios robustly.

6. 06

   Load test the server

   ~1.5h

   Simulate many concurrent client connections to verify stability under load.

Resources

• DocsJava Documentation