Mocks Server Plugin Proxy

Plugin for Mocks Server that provides a route handler that proxy requests to another host and pass response back to original caller.

It uses the express-http-proxy package under the hood, and supports all of its options.

Usage

This plugin is included in the main distribution of the Mocks Server project, so you can also read the official documentation website.

Proxy routes

If you want a route variant to use the proxy handler, define its handler property as "proxy". Use the host property to set the host for the route, and the options property to set any of the express-http-proxy options.

module.exports = [
  {
    id: "proxy-all",
    url: "*",
    method: ["GET", "POST", "PATCH", "PUT"],
    variants: [
      {
        id: "proxy-to-google",
        handler: "proxy", // This route variant will use the "proxy" handler from this plugin
        host: "https://www.google.com", // proxy host
        options: {} // Options for express-http-proxy
      },
      {
        id: "disabled",
        response: (req, res, next) => next(),
      },
    ],
  },
];

Route variant options

Mocks server common properties to all route handlers are in cursive. Specific properties of this plugin are in bold:

• id (String): Id of the route variant.
• handler (String): Must be "proxy" to let this plugin handle the route.
• delay (Number|null): Milliseconds of delay for this variant.
• host (String|Function): The proxy host. Equivalent to the express-http-proxy host option, so it can also be a function.
• options (Object): Object containing any of the options supported by the express-http-proxy package. Some of them are:
  • filter (Function): filter option for express-http-proxy.
  • userResDecorator (Function): userResDecorator option for express-http-proxy.
  • ... all other express-http-proxy options are also supported.

Tip: Note that the delay option is still valid for routes handled by this plugin, so you can use it to simulate that host responses are slow.