Reverse Proxy Server

This project is a reverse proxy server designed for home networks with a single IP address. It allows routing to multiple services hosted within the internal network. The server uses Let's Encrypt to generate SSL certificates for each host address and redirects HTTP traffic to HTTPS.

Features

• Reverse Proxy: Routes incoming requests to the appropriate backend service based on the host address.
• Let's Encrypt Integration: Automatically generates and renews SSL certificates for each host address.
• HTTP to HTTPS Redirection: Redirects all HTTP traffic to HTTPS to ensure secure communication.

Configuration

The server configuration is defined in the config.yaml file. The configuration file should specify the services to be proxied, including their host addresses and backend URLs.

Example config.yaml:

services:
  - host: example1.com
    backend: http://localhost:8081
  - host: example2.com
    backend: http://localhost:8082

Usage

1. Install Dependencies: Ensure you have Go installed and run go mod tidy to install the required dependencies.

2. Run the Server: Start the reverse proxy server by running the following command:

   go run main.go serve
   or 
   go build *.go
   ./main serve

3. Access Your Services: Access your services using the configured host addresses. The server will handle the routing and SSL termination.

Code Overview

• Configuration Loading: The LoadConfig function in cmd/proxy.go reads the configuration from config.yaml and unmarshals it into a Config struct.
• Reverse Proxy Creation: The NewReverseProxy function in cmd/proxy.go creates a new reverse proxy for a given target URL.
• Server Initialization: The startProxyServer function in cmd/proxy.go initializes and starts the HTTP and HTTPS servers, sets up the Let's Encrypt manager, and handles the routing logic.

License

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

Acknowledgements

• Cobra for command-line interface support.
• Let's Encrypt for providing free SSL certificates.
• Go for the programming language and standard library.