C Event-Driven Web Server

A lightweight, high-performance HTTP server written in C, utilizing the kqueue event notification interface for efficient, non-blocking I/O operations.

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Overview

This project implements a modern event-driven web server in C, optimized for high performance and scalability. Instead of spawning threads for each connection, it leverages the kqueue event notification system to handle multiple concurrent connections with minimal overhead.

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Features

• Event-driven architecture: Uses kqueue for efficient event handling.
• Non-blocking I/O: Handles multiple connections without the overhead of threading.
• HTTP protocol support: Properly processes HTTP requests and responses.
• Modular design: Clearly separated components for socket handling, HTTP processing, and event management.
• Lightweight: Minimal external dependencies for better performance.

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Getting Started

Prerequisites

• C Compiler: gcc or clang
• CMake: version 3.0 or higher
• POSIX-compliant OS with kqueue support (macOS, FreeBSD, etc.)

Building

mkdir build
cd build
cmake ..
make

Running the Server

./server

The server listens on port 8080 by default.

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Project Structure

project-root/
├── server.c                 # Main server implementation
├── server.utils.c           # Socket and server utility functions
├── server.utils.h           # Utility function declarations and configurations
├── events.c                 # Event handling with kqueue
├── events.h                 # Event handling declarations
└── http/
    ├── http_helpers.c       # HTTP request/response utilities
    ├── http_helpers.h       # HTTP helper function declarations
    ├── http_router.c        # URL routing and request handling
    └── http_router.h        # Router declarations

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