HTTP/1.1 Multiplexing Webserver in C

This repository contains a simple HTTP/1.1 multiplexing webserver implementation in pure C. The server uses non-blocking I/O and the epoll API for efficient handling of multiple concurrent connections.

Features

• HTTP/1.1 protocol support
• Multiplexing using epoll for handling multiple connections
• Support for GET and POST methods
• Basic file operations (read and write)
• Custom request parsing and response handling
• Support for various HTTP status codes (200 OK, 201 Created, 400 Bad Request, 404 Not Found)

Endpoints

The server supports the following endpoints:

1. /: Returns a 200 OK response
2. /echo/<message>: Echoes back the provided message
3. /user-agent: Returns the User-Agent header from the request
4. /files/<filename>: Supports GET (to read a file) and POST (to write a file) operations

Building and Running

To compile the server, use a C compiler such as gcc:

gcc -o server server.c

To run the server:

./server

The server will start and listen on port 4221.

Dependencies

This project uses standard C libraries and POSIX APIs. No external dependencies are required.

Configuration

• The server listens on port 4221 by default
• File operations use the /tmp/data/ directory for reading and writing files

Notes

• The server uses non-blocking I/O and the epoll API for efficient handling of multiple connections
• The implementation includes basic error handling and logging
• The code demonstrates low-level socket programming, HTTP request parsing, and response construction

Future Improvements

• Refactor the code for better modularity and readability
• Multi-threading or asynchronous I/O for handling multiple connections
• Thread pool for handling multiple connections
• In-thread multiplexing using epoll
• Add support for more HTTP methods
• Implement better error handling and logging
• Add configuration options (e.g., port number, file paths)
• Implement security features and input validation
• Add support for HTTPS

License

This project is licensed under the MIT License. See the LICENSE file for details.

Contributing

Contributions are welcome! Feel free to open an issue or submit a pull request if you find a bug or want to add a new feature.