Building an HTTP server from scratch in JavaScript, part 2 — Sending a response

📰 Medium · Programming

Learn to send a response from an HTTP server built from scratch in JavaScript

intermediate Published 13 Jun 2026

Action Steps

Build a TCP socket to establish a connection
Create a buffer to store incoming data
Implement a state machine to handle HTTP requests
Send a response using the HTTP protocol
Test the server with a client like curl or a web browser

Who Needs to Know This

Backend developers and software engineers can benefit from this tutorial to understand the inner workings of an HTTP server and improve their skills in building custom server applications.

Key Insight

💡 Sending a response from an HTTP server involves implementing a state machine and using the HTTP protocol to format the response

Full Article

In the previous part we built the front half of an HTTP server: a TCP socket, a buffer that survives across data events, and a state… Continue reading on Medium »

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