A simple multi-user chat application built with Go (Golang). This project demonstrates Go's concurrency features (goroutines, channels, mutex) by creating a real-time terminal-based chatroom over TCP.

• Multi-client support (chatroom style)
• Username registration
• Real-time messaging
• Broadcast system to all connected users
• Join/leave notifications
• Ignores empty messages for clean output

group_chat_go/
│── server.go   # Chat server
│── client.go   # Chat client

git clone https://github.com/your-username/group_chat_go.git
cd group_chat_go

go run server.go

go run client.go

You can start multiple clients in different terminals, all connecting to the same server.

# Terminal 1 (server)
Chat server started on :8080
New client joined: Alice
New client joined: Bob
Terminal 2 (Alice)

Enter your username: Alice
Bob joined the chat
Bob: Hello Alice!
Alice: Hi Bob!
Terminal 3 (Bob)

Enter your username: Bob
Alice: Hi Bob!
Bob: Hello Alice!

• Go 1.23+