"使用 Node.js Express 托管多个网站"

Question

I am having problems configuring two different Node.js applications with different domains. Have two directories

"/abc/" -> express-admin setup (backend) -> admin.abc.com

Answer 1

I am not sure how you are using the vhost. First of all with vhost approach, you need to run only one express app. Not two. Here is an example.

var express = require('express');
var vhost = require('vhost');

/*
edit /etc/hosts:

127.0.0.1       api.mydomain.local
127.0.0.1       admin.mydomain.local
*/

// require your first app here

var app1 = require("./app1");

// require your second app here

var app2 = require("./app2");

// redirect.use(function(req, res){
//   if (!module.parent) console.log(req.vhost);
//   res.redirect('http://example.com:3000/' + req.vhost[0]);
// });

// Vhost app

var appWithVhost = module.exports = express();

appWithVhost.use(vhost('api.mydomain.local', app1)); // Serves first app

appWithVhost.use(vhost('admin.mydomain.local', app2)); // Serves second app

/* istanbul ignore next */
if (!module.parent) {
  appWithVhost.listen(8000);
  console.log('Express started on port 8000');
}

You just need to run the main express app with vhost enabled using forever.

Answer 2

You're hosting the applications on the same port, using the same network interface. So when the second app starts, it will always find the port in use. If you want to use multiple applications on the same port, they each need to have their own network interface. When using vhost, you would still need to listen on a different port for each app. See this example for details. If you would like your apps to be completely independent, you're better off using node-http-proxy. This allows you to host a proxy on port 80 which forwards requests to express apps listening on different ports. If one of these apps crashes, it will not crash the other app, unlike the vhosts approach. This post gives an example of the implementation using node-http-proxy.

Answer 3

Thanks @veggiesaurus for pointing up to node-http-proxy. Apologies for posting late.

Here is how I solved my problem using node-http-proxy

Folder Structure:

• www/
  • server.js
  • abc/ [express setup]
    • app.js
  • xyz/ [express-admin setup]
    • node_modules/express-admin/app.js

"abc" and "xyz" have there own setup and running on port xxxx:3001 and xxxy:3002

I installed node-http-proxy and added server.js file with following codes. Referred this link

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

var proxy = httpProxy.createProxy();
var options = {  
  'abc.com': 'http://x.x.x.x:3001',
  'xyz.com': 'http://x.x.x.y:3002'
}

http.createServer(function(req, res) {
  proxy.web(req, res, {
    target: options[req.headers.host]
  });
}).listen(80);

Finally, used forever to run all 3 apps setup to run forever in port 3001, 3002 and 80.

Answer 4

const express = require("express");
const app = express();
const fs = require('fs');
app.use((req, res, next) => {
    let reqDomain = req.get("host");
    if (reqDomain.indexOf(":") > -1) {
        reqDomain = reqDomain.split(":")[0];
    }
    if(reqDomain.endsWith(".local")) {
        reqDomain = reqDomain.substring(0, reqDomain.length - 6);
    }
    const domainPath = "public/" + reqDomain;
    let filePath = domainPath + req.originalUrl;
    filePath = fs.lstatSync(filePath).isDirectory() ? filePath + "/index.html" : filePath;
    console.log(__dirname + "/" + filePath);
    res.sendFile(filePath, { root: __dirname });
});
const port = process.env.PORT || 80;
app.listen(port, () => console.log("Server Started on Port " + port));