⚙️ Go HTTP/1.1 Server (Built from Scratch)

A minimal yet functional HTTP/1.1 server implemented from scratch in Go, using only the standard net package. This project was built to understand the internals of HTTP and TCP, following RFC 9110 (HTTP Semantics) and RFC 9112 (HTTP/1.1).

---

🚀 Features

• 🔌 Built using raw TCP sockets
• ⚙️ Compliant with HTTP/1.1 semantics
• 🧵 Concurrent client handling using goroutines
• 📦 Chunked Transfer Encoding support (streamed responses)
• 🖼️ Binary data support — serves images, videos, etc.
• 📝 Request parsing and response generation from scratch

---

🧠 Motivation

The goal of this project was to:

• Deeply understand how HTTP actually works under the hood
• Explore Go’s low-level networking capabilities (net package)
• Learn how HTTP messages are parsed, formatted, and transmitted over TCP

---

⚙️ How It Works

1. The server listens on a TCP port (default :42069)
2. Accepts incoming TCP connections
3. Spawns a goroutine per client connection
4. Parses:
   • Request line (GET /index.html HTTP/1.1)
   • Headers
   • Optional body
5. Sends a valid HTTP/1.1 response, using:
   • Content-Length (for known sizes)
   • or Transfer-Encoding: chunked (for streaming)
6. Supports binary and text responses
7. Closes the connection

---

📚 References

• RFC 9110 – HTTP Semantics
• RFC 9112 – HTTP/1.1
• Go net package

---

🧑‍💻 Author

Dibakar Ghosh 🔗 GitHub Profile