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Build your own HTTP server

Learn about TCP servers, the HTTP protocol and more

Start Building
C
C
C#
C#
C++
C++
Clojure
Clojure
Dart
Dart
Elixir
Elixir
Gleam
Gleam
Go
Go
Haskell
Haskell
Java
Java
JavaScript
JavaScript
Kotlin
Kotlin
PHP
PHP
Python
Python
Ruby
Ruby
Rust
Rust
Scala
Scala
TypeScript
TypeScript
Zig
Zig

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HTTP is the protocol that powers the web. In this challenge, you'll build a HTTP server from scratch using TCP primitives. Your server will be capable of handling simple GET/POST requests, serving files and handling multiple concurrent connections.

Along the way, we'll learn about TCP connections, HTTP headers, HTTP verbs, handling multiple connections and more.

Stages

Bind to a port
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Respond with 200
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Extract URL path
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Respond with body
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Read header
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Concurrent connections
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Return a file
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Read request body
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HTTP Compression

Compression headers
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Multiple compression schemes
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Gzip compression
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Persistent Connections

Persistent connections
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Concurrent persistent connections
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Connection closure
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