Configurable HTTP Proxy

`configurable-http-proxy` (CHP) is a robust HTTP proxy designed to dynamically manage routing tables via either a command-line interface or a REST API. Built as a wrapper around `node-http-proxy`, it extends the underlying library's capabilities to include WebSocket support, making it suitable for reverse proxies and load balancers. The package is a core component in JupyterHub deployments, enabling flexible routing for multi-user environments. The current stable version is 5.2.0, requiring Node.js 20 or newer. Releases typically align with JupyterHub's development cycle, focusing on stability, security, and integration within the Jupyter ecosystem. Its key differentiator is the on-the-fly reconfigurability of routes and its robust API for programmatic control, allowing for complex, dynamic proxying scenarios. It operates with distinct public-facing and inward-facing REST API servers, each with configurable IPs and ports.