how to run node js with proxy

  1. Install the 'http-proxy' module using npm:

bash npm install http-proxy

  1. Create a new Node.js file (e.g., app.js) and require the necessary modules:

javascript const http = require('http'); const httpProxy = require('http-proxy');

  1. Create an instance of the proxy and specify the target server:

javascript const targetServer = 'http://your-target-server.com'; const proxy = httpProxy.createProxyServer({ target: targetServer });

  1. Handle proxy server errors:

javascript proxy.on('error', function (err, req, res) { res.writeHead(500, { 'Content-Type': 'text/plain' }); res.end('Proxy server error.'); });

  1. Create a new HTTP server and handle incoming requests:

javascript const server = http.createServer(function (req, res) { // You can add custom logic here if needed before proxying the request proxy.web(req, res); });

  1. Specify the port for your proxy server to listen on:

javascript const port = 3000; server.listen(port);

  1. Start the proxy server and print a message once it's running:

javascript server.on('listening', function () { console.log(`Proxy server listening on port ${port}`); });

  1. Optionally, you can add additional logic before or after proxying requests by modifying the request or response objects.

  2. Save the file and run your Node.js application:

bash node app.js

This will start your Node.js server with a proxy that forwards requests to the specified target server. Adjust the target server URL and port as needed.