A progressive journey into TCP networking with Go – from basics to bidirectional chat.
This repository is a hands-on learning journey into building TCP-based server-client systems using Go. It starts with the basics of TCP communication and progressively introduces more advanced concepts like bidirectional messaging, broadcasting, and client-to-client communication—all through clean, well-structured examples.
Each lesson lives in its own branch (lesson-1, lesson-2, etc.), so you can follow along step by step and deepen your understanding of real-time networking using raw sockets.
- Learn how to listen for incoming TCP connections using Go.
- Understand how clients establish a connection and communicate.
- Practice building real-time applications over TCP.
- Incrementally advance your knowledge through practical lessons.
.
├── client/
│ └── main.go # Client implementation
├── server/
│ └── main.go # Server implementation
├── valueobject/
│ └── constant.go # Shared constants (e.g., address, port)
- Go 1.16 or later
Check with:go version
cd server
go run main.go- The server will start listening on the configured port.
- It logs connection events and sends data to connected clients.
Open a new terminal:
cd client
go run main.go- The client connects to the server and displays any received data.
- The server continuously sends timestamped messages to each connected client.
- The client connects via TCP and listens for the stream.
- Demonstrates real-time, unidirectional or bidirectional communication over raw TCP.
| Lesson | Branch | Description |
|---|---|---|
| 1 | lesson-1 |
Basic TCP streaming (server to client) |
| 2 | lesson-2 |
Bidirectional server-client messaging |
| 3 | lesson-3 |
Server broadcasts messages to all clients |
| 4 | lesson-4 |
Client-to-client messaging via server |
| 5+ | Coming Soon | Authentication, WebSocket migration, etc. |
This project is licensed under the MIT License. See the LICENSE file for details.
This project is meant for learning and growth. Feel free to fork it, improve it, or use it as a foundation for your own networking experiments. Pull requests are welcome!
golang • tcp • networking • socket-programming • client-server • real-time • learning • go-tutorial