Rust TCP Server

A lightweight, multithreaded TCP server built with Rust's standard library. It accepts client connections, reads incoming data, logs messages, and responds with Hello there!.

Features

• TCP communication using std::net.
• Thread-per-connection concurrency.
• Modular and organized project structure.
• No external dependencies.

Configuration

Setting	Default
IP Address	127.0.0.1
Port	8080
Buffer Size	1024 bytes
Response	Hello there!
Protocol	TCP

The server listens on the local loopback interface and accepts connections from the same machine.

Project Structure

src/
├── main.rs          # Application entry point
├── config.rs        # Server configuration
├── constants.rs     # Shared constants
├── utils.rs         # Utility functions
└── server/
    ├── mod.rs       # Listener and connection management
    └── client.rs    # Client communication

Getting Started

Run the server:

cargo run

Test with Netcat in another terminal:

nc 127.0.0.1 8080

Type a message and press Enter. The server responds with:

Hello there!

Verify the listening port:

ss -ltnp | grep ':8080'

How It Works

1. The server binds to the configured address and listens for connections.
2. Each accepted connection is handled in a separate thread.
3. The server reads and logs the received data.
4. It sends the predefined response and finishes handling the connection.

Limitations

• Reads only once per connection.
• Sends one response per connection.
• Uses an unbounded thread-per-connection model.
• Implements raw TCP, not HTTP.