Building an HTTP server from scratch in JavaScript, part 3 — Bodies, keep-alive, and surviving the…

📰 Medium · JavaScript

Learn to build an HTTP server from scratch in JavaScript, handling request bodies, keep-alive connections, and error handling

intermediate Published 16 Jun 2026
Action Steps
  1. Build a basic HTTP server using JavaScript and TCP sockets
  2. Handle request bodies and parse HTTP requests
  3. Implement keep-alive connections to improve server performance
  4. Add error handling to survive common errors and exceptions
  5. Test the server with various HTTP requests and scenarios
Who Needs to Know This

Backend developers and software engineers can benefit from this tutorial to understand how HTTP servers work and how to build one from scratch

Key Insight

💡 Building an HTTP server from scratch helps developers understand the underlying mechanics of HTTP requests and responses

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🚀 Build an HTTP server from scratch in JavaScript! 🤯 Handle request bodies, keep-alive, and errors like a pro 💻

Key Takeaways

Learn to build an HTTP server from scratch in JavaScript, handling request bodies, keep-alive connections, and error handling

Full Article

Over the last two parts we built an HTTP server that reads a request off a raw TCP socket and writes a response back. Already pretty cool… Continue reading on Medium »
Read full article → ← Back to Reads

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