How nodejs proxy https

With the rapid development of the Internet, the use of the HTTPS protocol is becoming more and more widespread. For some projects that need to use the HTTPS protocol, the proxy capability of Node.js is becoming more and more important. This article will introduce the method of Node.js proxy HTTPS protocol.

First of all, we need to understand what the HTTPS protocol and SSL/TLS are. HTTPS is a secure transmission protocol based on the TLS/SSL protocol. It uses the SSL/TLS protocol to ensure security during the transmission process. Among them, TLS (Transport Layer Security) is an upgraded version of SSL (Secure Socket Layer), which can effectively protect the security of data transmission.

In Node.js, you can use the http-proxy library to proxy the HTTPS protocol. http-proxy is a commonly used HTTP proxy library in Node.js. It can forward the client's request to the target server and return the target server's response to the client.

Install the http-proxy library:

npm install http-proxy

Proxy HTTP request:

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

const proxy = httpProxy.createProxyServer({});
const server = http.createServer(function (req, res) {
  proxy.web(req, res, {
    target: 'http://localhost:8080'
  });
});

server.listen(8000);

As you can see, an http proxy server is created here to forward the entered URL to the target server (Here is localhost:8080).

Proxy HTTPS requests:

In addition to proxying HTTP requests, you also need to proxy HTTPS requests to the target server. You need to add some additional configuration when creating the proxy server.

const http = require('http');
const https = require('https');
const httpProxy = require('http-proxy');
const fs = require('fs');

const options = {
  key: fs.readFileSync('server-key.pem'),
  cert: fs.readFileSync('server-cert.pem')
};

const proxy = httpProxy.createProxyServer({});

const server = https.createServer(options, function (req, res) {
  proxy.web(req, res, {
    target: 'https://localhost:8080',
    secure: false
  });
});

server.listen(8000);

The target server here is https://localhost:8080, and secure needs to be set to false, which means that SSL certificate verification will not be performed. At the same time, you also need to use https.createServer to create a proxy server, add cert and key parameters, and use the HTTPS protocol when proxying HTTPS requests.

Summary:

This article introduces the method of Node.js proxying the HTTPS protocol, which requires the use of the http-proxy library for proxying. At the same time, please note that when proxying HTTPS requests, you need to set secure to false, use https.createServer to create a proxy server, and add cert and key parameters.

In practical applications, Node.js proxy can help us implement load balancing, interface forwarding, data capture and other functions. If you haven't practiced Node.js proxy yet, you can try using it in your own project.

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