Networking Programming in Java

This repository documents my learning journey in network programming with Java.
It contains simple yet practical implementations of TCP, UDP, and other network protocols.
The goal is to build a strong foundation in how network communication works at a low level.

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📂 Project Structure

networking-programming/
│
├── tcp/
│   ├── EchoServer.java
│   ├── EchoClient.java
│   └── README.md
│
├── udp/
│   ├── UDPEchoServer.java
│   ├── UDPEchoClient.java
│   └── README.md
│
├── http/        # (upcoming)
├── websocket/   # (upcoming)
└── README.md

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✅ Completed Projects

1. TCP Echo Server & Client

• Description:
  A simple TCP server that listens for client connections and echoes back any messages sent.
  Demonstrates connection-oriented communication using ServerSocket and Socket.

• How to run:

  javac tcp/EchoServer.java tcp/EchoClient.java
  java tcp.EchoServer
  java tcp.EchoClient

• Quick Test (via Telnet):

  telnet localhost 1234

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2. UDP Echo Server & Client

• Description:
  A simple UDP server that listens for datagrams and echoes them back to the sender.
  Demonstrates connectionless communication using DatagramSocket.

• How to run:

  javac udp/UDPEchoServer.java udp/UDPEchoClient.java
  java udp.UDPEchoServer
  java udp.UDPEchoClient

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🔜 Upcoming Projects

• Multi-client TCP Chat Server (threaded server, multiple clients can chat simultaneously).
• Basic HTTP Server (serving static HTML files).
• HTTP/1.1 Features (headers, persistent connections).
• WebSockets (real-time communication over HTTP upgrade).

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📖 Resources

• Java Socket Programming (Oracle Tutorial)
• Java Datagram (UDP) Tutorial
• Beej’s Guide to Network Programming (C, but excellent concepts)

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🎯 Goal

By the end of this repository, I aim to:

• Understand TCP vs UDP deeply.
• Gain hands-on experience with Java Socket APIs.
• Explore HTTP internals and WebSockets.
• Simulate how real-world servers (Nginx, Tomcat, Node.js) handle requests.