What is @types/http-proxy?
The @types/http-proxy package provides TypeScript type definitions for the http-proxy library, which is a full-featured HTTP proxy for node.js. This package allows TypeScript developers to use http-proxy in their projects with the benefits of type checking and IntelliSense in their code editors. It does not provide proxy functionality by itself but adds type definitions for easier development with TypeScript.
What are @types/http-proxy's main functionalities?
Creating an HTTP Proxy Server
This code sample demonstrates how to create a basic HTTP proxy server that forwards incoming requests to 'http://example.com'. It showcases the use of the 'createProxyServer' method to create a proxy instance and the 'web' method to proxy HTTP requests.
import * as http from 'http';
import * as httpProxy from 'http-proxy';
const proxy = httpProxy.createProxyServer({});
const server = http.createServer(function(req, res) {
proxy.web(req, res, { target: 'http://example.com' });
});
server.listen(8000);
Listening for Proxy Events
This code sample shows how to listen for errors on the proxy server. When an error occurs, it sends a 500 response to the client with a message indicating that something went wrong. This is useful for handling and logging errors.
proxy.on('error', function (err, req, res) {
res.writeHead(500, {
'Content-Type': 'text/plain'
});
res.end('Something went wrong.');
});
Other packages similar to @types/http-proxy
http-proxy-middleware
http-proxy-middleware is a package that provides an express middleware to create a proxy server. It is built on top of http-proxy and offers a convenient way to integrate proxy functionality into Express applications. Compared to @types/http-proxy, http-proxy-middleware is more focused on integration with Express and other similar frameworks.
node-http-proxy
node-http-proxy is the underlying library that @types/http-proxy provides types for. It is a full-featured HTTP proxy library for Node.js, supporting websockets and other advanced features. While node-http-proxy provides the actual functionality, @types/http-proxy adds TypeScript support.