Cloudflare Workers Proxy

A simple library for creating reverse proxies with Cloudflare Workers.

Installation

npm install workers-proxy

Usage

import { createProxy } from "workers-proxy";

export default {
  fetch: createProxy({
    origin: "https://example.com",
    rewrites: [
      {
        source: "/blog/:path*",
        destination: "http://blog.example.com",
      },
    ],
  }),
};

Origin

The origin option is the URL of the target server you want to proxy requests to. Traffic that doesn't match a rewrite or redirect rule will be proxied to this URL.

Rewrites

The rewrites option is an array of rewrite rules that will be applied to the requested URL before it is proxied to the target server. Each rule is an object with the following properties:

• source - The pattern to match against the requested URL pathname. Patterns can contain named parameters prefixed with a colon (e.g. :path) and include a zero-or-more operator to match the rest of the path (e.g. :path*). Parameters are accessible in the destination URL using the same name. Learn more about formatting patterns in the path-to-regexp documentation.
• destination - The URL to proxy the request to. Parameters from the source pattern can be used in the destination URL.

Redirects

The redirects option is an array of redirect rules that will will result in the proxy returning a redirect response to the client. Each rule is an object with the following properties:

• source - The pattern to match against the requested URL pathname. Patterns can contain named parameters prefixed with a colon (e.g. :path*) and include a zero-or-more operator to match the rest of the path (e.g. :path*). Parameters are accessible in the destination URL using the same name. Learn more about formatting patterns in the path-to-regexp documentation.
• destination - The URL to redirect the request to. Parameters from the source pattern can be used in the destination URL. Must be an absolute URL.
• permanent - A boolean value indicating whether the redirect should be permanent (308) or temporary (307).