proxydynamic.js

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

    var url = require('url') ;
//
// Create a proxy server with custom application logic
//
var proxy = httpProxy.createProxyServer({});

//
// Create your custom server and just call `proxy.web()` to proxy
// a web request to the target passed in the options
// also you can use `proxy.ws()` to proxy a websockets request
//
var server = http.createServer(function(req, res) {
    var q = url.parse(req.url,true).query;
    console.log(q.dst)
  const dst = {
    pru_app_tenant1:"http://127.0.0.1:5061",
    pru_app_tenant2:"http://127.0.0.1:5062",
    pru_app_tenant3:"http://127.0.0.1:5063",
    pru_app_tenant4:"http://127.0.0.1:5064"

  }
  proxy.web(req, res, { target: dst[q.dst] });
});

console.log("listening on port 5050")
server.listen(5050);


var server2 = http.createServer(function(req, res) {
    var q = url.parse(req.url,true).query;
    q.server = "5064"
    res.write(JSON.stringify(q)  ); 
  res.end();
  }).listen(5064);
  var server2 = http.createServer(function(req, res) {
    var q = url.parse(req.url,true).query;
    q.server = "5061"
    res.write(JSON.stringify(q)  ); 
  res.end();
  }).listen(5061);
  var server2 = http.createServer(function(req, res) {
    var q = url.parse(req.url,true).query;
    q.server = "5062"
    res.write(JSON.stringify(q)  ); 
  res.end();
  }).listen(5062);
  var server2 = http.createServer(function(req, res) {
    var q = url.parse(req.url,true).query;
    q.server = "5063"
    res.write(JSON.stringify(q)  ); 
  res.end();
  }).listen(5063);