How to implement an Express proxy forwarding server?

2 years ago
Sophia Anderson
1 minute

To set up an Express proxy server, you can follow the steps below:

  1. First, you need to install the Express module in your project. You can use the following command to install it:
npm install express
  1. Create a new Express application, and set the port number and the target URL for the proxy. Here is a simple example:
const express = require('express');
const { createProxyMiddleware } = require('http-proxy-middleware');

const app = express();
const port = 3000;
const targetUrl = 'http://example.com';

app.use('/', createProxyMiddleware({ target: targetUrl, changeOrigin: true }));

app.listen(port, () => {
  console.log(`Proxy server is running on port ${port}`);
});

In this example, we have created an Express application that forwards all requests to http://example.com. The ‘changeOrigin’ option is used to modify the source of requests in order to handle them correctly when forwarding.

  1. Run your proxy server. You can start it using the following command:
node server.js

Now, your Express agent forwarding server is ready to be used. All requests sent to your server will be forwarded to the specified target URL. You can further configure it, such as adding routes or modifying request headers, as needed.

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