Express Http Proxy

Overview:

The express-http-proxy is an npm package that serves as middleware for Express to proxy requests to another host and return the response to the original caller. It facilitates the seamless routing of requests and responses between different hosts within an Express application.

Features:

• Streaming: Requests and responses are piped/streamed/chunked by default.
• Promises: Many function hooks support Promises to handle callback functionalities.
• Host: The proxy host can be a static string or a function that can be memoized or computed on each request.
• Middleware Mixing: Includes guidance on mixing with other middleware like body-parser for proper request handling.
• Options: Various options available like proxyReqPathResolver and userResDecorator for customizing proxy behavior.
• filter: A filter option is available to limit which requests are proxied based on conditions.

Summary:

The express-http-proxy npm package provides a versatile middleware solution for Express applications, enabling seamless proxying of requests to other hosts while handling responses efficiently. With features like streaming support, Promises, and customizable options, it offers a flexible approach to managing proxy operations within an Express server. The ability to mix middleware, handle promises, and apply filters adds to the package's utility in optimizing request routing and response handling.