rustHTTP

A High-Performance, Multithreaded HTTP Server Built from Scratch in Rust

Learning systems programming by implementing a production-inspired HTTP server from first principles.

Overview

rustHTTP is a production-inspired HTTP server written entirely in Rust.

The purpose of this project is not to build another web framework. Instead, it focuses on understanding how modern web servers work internally by implementing networking, HTTP parsing, routing, concurrency, middleware, and performance optimizations from scratch.

This repository serves as both a learning journey and a systems programming project, documenting each architectural decision along the way.

Why This Project?

Most frameworks hide the complexity of networking behind abstractions.

rustHTTP does the opposite.

Instead of relying on existing web frameworks, every major component is built manually to understand how production-grade HTTP servers operate internally.

Topics explored throughout this project include:

TCP Socket Programming
HTTP/1.1 Protocol
Request Parsing
Response Generation
Routing
Thread Pools
Async Programming
Middleware
Static File Serving
Performance Optimization
Benchmarking
Concurrent Programming
Clean Software Architecture

Objectives

Build an HTTP server from scratch
Learn systems programming with Rust
Understand the HTTP protocol deeply
Implement efficient multithreading
Explore asynchronous networking with Tokio
Build reusable server components
Benchmark and optimize performance
Document architectural decisions

Features

Networking

TCP Listener
TCP Stream Handling
Connection Management
Graceful Shutdown
Connection Timeouts
Persistent Connections

HTTP

HTTP/1.1
Request Parsing
Response Builder
Header Parsing
Query Parameters
Cookies
MIME Type Detection
Status Codes
Custom Headers

Routing

Supports

GET
POST
PUT
PATCH
DELETE

Example

router.get("/", home);

router.post("/login", login);

router.put("/users/:id", update_user);

router.delete("/users/:id", delete_user);

Concurrency

Thread Pool
Worker Threads
Work Queue
Thread-safe Data Structures
Async Networking
Shared State Management

Middleware

Logging
Authentication
Rate Limiting
Compression
Request Timing
CORS
Custom Middleware

Execution Pipeline

Incoming Request
        │
        ▼
   TCP Listener
        │
        ▼
 HTTP Parser
        │
        ▼
  Middleware
        │
        ▼
    Router
        │
        ▼
 Request Handler
        │
        ▼
 Response Builder
        │
        ▼
Outgoing Response

Static File Serving

Serve

HTML
CSS
JavaScript
Images
Fonts
Videos
PDFs

JSON APIs

Request

{
    "username": "alice",
    "password": "secret"
}

Response

{
    "status": "success"
}

Logging

Every request logs

Timestamp
Client IP
HTTP Method
Route
Status Code
Latency
User-Agent
Response Size

Error Handling

Implemented HTTP status codes

200 OK
201 Created
204 No Content
400 Bad Request
401 Unauthorized
403 Forbidden
404 Not Found
405 Method Not Allowed
408 Request Timeout
429 Too Many Requests
500 Internal Server Error

Planned Features

HTTP/2 Support
HTTPS (TLS)
WebSockets
Reverse Proxy
Load Balancer
Gzip Compression
Brotli Compression
Chunked Transfer Encoding
Streaming Responses
Multipart File Uploads
Session Management
Reverse DNS Lookup
Request Caching
ETag Support
Virtual Hosts
Configuration Files
Access Logs
Metrics Dashboard

Architecture

                          Client
                             │
                             │
                     TCP Connection
                             │
                             ▼
                      TCP Listener
                             │
                             ▼
                 Connection Acceptor
                             │
            ┌────────────────┴────────────────┐
            ▼                                 ▼
      Worker Thread 1                   Worker Thread 2
            │                                 │
            ▼                                 ▼
      HTTP Request Parser               HTTP Request Parser
            │                                 │
            ▼                                 ▼
          Router                          Router
            │                                 │
            ▼                                 ▼
      Middleware Stack                 Middleware Stack
            │                                 │
            ▼                                 ▼
       Route Handler                    Route Handler
            │                                 │
            ▼                                 ▼
      Response Builder                 Response Builder
            │                                 │
            └────────────────┬────────────────┘
                             ▼
                     HTTP Response

Project Structure

rustHTTP
│
├── .github
│   ├── ISSUE_TEMPLATE
│   ├── workflows
│   │   ├── ci.yml
│   │   ├── clippy.yml
│   │   └── fmt.yml
│   └── pull_request_template.md
│
├── benches
├── docs
│   ├── architecture.md
│   ├── threadpool.md
│   ├── routing.md
│   ├── parser.md
│   └── benchmarks.md
│
├── examples
├── tests
│
├── src
│   ├── main.rs
│   ├── server.rs
│   ├── listener.rs
│   ├── router.rs
│   ├── parser.rs
│   ├── request.rs
│   ├── response.rs
│   ├── middleware.rs
│   ├── worker.rs
│   ├── config.rs
│   ├── error.rs
│   │
│   ├── handlers
│   │
│   └── utils
│
├── Cargo.toml
├── LICENSE
├── CONTRIBUTING.md
├── ROADMAP.md
└── README.md

Development Roadmap

Phase 1

TCP Listener
TCP Streams
Connection Acceptance

Phase 2

HTTP Request Parser
Request Structure
Response Builder

Phase 3

Routing
Route Parameters
Method Matching

Phase 4

Thread Pool
Worker Queue
Graceful Shutdown

Phase 5

Middleware
Logging
Request Context

Phase 6

Static File Server
MIME Detection

Phase 7

JSON Support
Serialization

Phase 8

HTTP Keep-Alive
Connection Reuse

Phase 9

Benchmarking
Profiling
Performance Optimization

Phase 10

HTTP/2
HTTPS
WebSockets

Performance Goals

10,000+ Requests per Second
Low Memory Consumption
Low Latency
Efficient Thread Scheduling
Minimal Heap Allocations
Fast HTTP Parsing

Learning Outcomes

This project explores

Ownership
Borrowing
Lifetimes
Traits
Generics
Async Rust
Tokio
TCP Networking
HTTP Protocol
Thread Pools
Synchronization
Arc
Mutex
Channels
Performance Profiling
Benchmarking
Software Architecture

Benchmarking

Future benchmarks will compare rustHTTP against

Hyper
Axum
Actix Web
Go net/http
Node.js HTTP
Python Flask

Metrics

Requests/sec
Average Latency
Peak Throughput
CPU Usage
Memory Usage

Documentation

Detailed implementation notes will be available under the docs/ directory, covering:

HTTP Protocol
TCP Networking
Thread Pool Design
Request Lifecycle
Middleware Pipeline
Routing Engine
Performance Optimizations
Benchmark Results

Contributing

Contributions are welcome.

If you'd like to contribute:

Fork the repository
Create a feature branch
Commit your changes
Open a Pull Request

Please ensure that new features include appropriate tests and documentation.

Learning Resources

RFC 9112 — HTTP/1.1
The Rust Programming Language
Tokio Documentation
Rustonomicon
Hyper Source Code
NGINX Source Code
Caddy Source Code

License

Distributed under the MIT License.

See LICENSE for more information.

Vision

The long-term goal of rustHTTP is to evolve from a simple TCP server into a production-inspired HTTP server that demonstrates how modern web servers are built internally.

Rather than focusing solely on the final implementation, this project emphasizes understanding the engineering decisions behind each component, documenting trade-offs, and continuously improving performance through benchmarking and iterative development.

If this project helps others learn systems programming in Rust, then it has achieved its purpose.

Name		Name	Last commit message	Last commit date
Latest commit History 3 Commits
src		src
.gitignore		.gitignore
Cargo.lock		Cargo.lock
Cargo.toml		Cargo.toml
README.md		README.md

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