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NodeJS reverse proxy websocket
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Foreword
code
related issues:
1.http and websocket different ports expose a port
2.nodejs reverse proxy
Related articles:
NodeJS combined with express using websocket
Foreword
Although Nginx can perform reverse proxy, it does not have a good fit with the developer code. Especially when the front end accesses the port, there may be a problem that the Nginx sets a reverse proxy and does not match the program (such as the front end The code does not use the URL port for access). And multiple ports will bring Nginx maintenance costs. In the article of NodeJS and express using websocket, you can combine http and ws ports, but sometimes you need to use two ports, http and ws, respectively. This article will introduce how to reverse proxy at the nodejs code level
代码
const express = require('express');
const proxy = require('http-proxy-middleware');
const app = express();
// var express = require('express');
// var http = require('http');
let https = require("https");
var expressWs = require('express-ws');
var fs = require('fs');
var option = {
key: fs.readFileSync('./keys/private.key'),
ca: fs.readFileSync('./keys/csr.pem'),
cert: fs.readFileSync('./keys/file.crt')
}
app.get('/', function (res, req) {
req.send('123')
})
var wsProxy = proxy ({
target: 'https: // localhost: 8080', // target host
changeOrigin: true, // requires virtual host site
ws: true, // whether to proxy websocket
}); // turn on the proxy function, And load the configuration
// Reverse proxy (here you can configure the path to be reversed here)
// eg: proxy / api / test to $ {HOST} / api / test
app.use ('/ test', wsProxy) ;
serverProxy = https.createServer (option, app);
// listening port
serverProxy.listen(8888, () => {
console.log(`server running`);
});
serverProxy.on('upgrade', wsProxy.upgrade); // -- subscribe to http 'upgrade'
var app2 = express ();
var httpServer;
// httpServer = http.createServer(app2);
httpServer = https.createServer(option, app2);
expressWs(app2, httpServer);
app2.ws ('/ test', function (ws, req) {
console.log ("ok")
ws.send ('You connected successfully')
ws.on ('message', function (msg) {
// Business code
console.log (msg);
ws.send (msg)
})
})
app2.get('/', function (res, req) {
req.send('123')
})
// app.listen (8080);
// httpServer.listen (8080);
httpServer.listen (8080);
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