Pristine
High-Performance Reverse Proxy
Project Overview
🏗️ Single Repository Architecture
Pristine is a single C++ repository containing the complete reverse proxy implementation. Installation and setup instructions are available in the repository's README.
Pristine is a high-performance reverse proxy built from scratch in C++ using Boost.Asio, designed for modern web applications requiring SSL/TLS termination, HTTP/2 support, and WebSocket proxying capabilities with minimal latency and maximum throughput.
The proxy features automatic SSL certificate management with Let's Encrypt integration, domain-based routing, load balancing, and a configuration-driven approach that makes it easy to deploy and manage in production environments.
Technology Stack
Core Technologies
- C++17 with modern features
- Boost.Asio for async I/O
- Boost.Beast for HTTP
- OpenSSL for cryptography
Protocol Support
- HTTP/1.1 and HTTP/2
- WebSocket proxying
- SSL/TLS termination
- TCP load balancing
Certificate Management
- Let's Encrypt ACME v2
- Automatic renewal
- Self-signed fallback
- Manual certificate support
Configuration
- YAML configuration
- Domain-based routing
- Load balancing rules
- Runtime configuration
Core Features
Reverse Proxy
- • Domain-based request routing
- • Backend health checking
- • Connection pooling
- • Request/response forwarding
- • Custom header manipulation
SSL/TLS Management
- • Automatic Let's Encrypt certificates
- • TLS 1.2+ support
- • Perfect forward secrecy
- • OCSP stapling
- • Certificate auto-renewal
Protocol Support
- • HTTP/1.1 with keep-alive
- • HTTP/2 with multiplexing
- • WebSocket upgrade handling
- • Chunked transfer encoding
- • Compression support
High Performance
- • Asynchronous I/O operations
- • Zero-copy data forwarding
- • Memory-efficient design
- • Low-latency processing
- • High concurrent connections
Load Balancing
- • Round-robin algorithm
- • Least connections
- • Health-based routing
- • Weighted distribution
- • Failover handling
Configuration
- • YAML-based configuration
- • Hot configuration reload
- • Environment variable support
- • Validation and error checking
- • Default value handling
Architecture Highlights
Asynchronous I/O Design
Built on Boost.Asio's proactor pattern for maximum scalability, handling thousands of concurrent connections with minimal resource usage and optimal performance.
- • Event-driven architecture
- • Non-blocking operations
- • Efficient memory management
- • Scalable connection handling
ACME Protocol Implementation
Full ACME v2 protocol implementation for automatic SSL certificate provisioning and renewal, eliminating manual certificate management overhead.
- • HTTP-01 challenge support
- • Account key management
- • Certificate signing requests
- • Automatic renewal scheduling
Modular Component Design
Clean separation of concerns with modular components for routing, SSL management, load balancing, and configuration, enabling easy maintenance and extensibility.
- • Pluggable architecture
- • Interface-based design
- • Dependency injection
- • Unit testable components
Error Handling & Resilience
Comprehensive error handling with graceful degradation, automatic recovery, and detailed logging for production reliability and debugging.
- • Circuit breaker pattern
- • Retry mechanisms
- • Health monitoring
- • Structured logging
Source Code
Demo Video
Reverse Proxy Demo
SSL & Load Balancing
Watch Pristine automatically provision SSL certificates and handle high-throughput traffic with load balancing.