app.js

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

var http = require('http');
var cache = {};
var server;
var id = 'asdasddadasdasq44';
app.use("/",express.static("public"));

var envPort = process.env.PORT || process.env.CF_INSTANCE_PORT || process.env.VCAP_APP_PORT;
var port = envPort || 3000;

var settings = {
  httpAdminRoot:"/red",
  httpNodeRoot: "/api",
  userDir:"/tmp/tmp-node",
  uiPort: port,
  functionGlobalContext: { }    // enables global context
};

app.get('/start', function(req, res, next) {
  // mount the sub app
  var RED = require("node-red");
  RED.init(server, settings);
  // Serve the editor UI from /red
  app.use(settings.httpAdminRoot,RED.httpAdmin);

  // Serve the http nodes UI from /api
  app.use(settings.httpNodeRoot,RED.httpNode);
  RED.start();
  cache[id] = RED;
});

app.get('/stop', function(req, res, next) {
  var RED = cache[id];
  RED.stop();
  var routes = app._router.stack;
  routes.forEach(function(route, index) {
    if(route.path === '/red') {
      // remove the mounted app
      routes.splice(index, 1);
    }
  });
});

server = http.createServer(app);

server.listen(port);

package.json

{
  "name": "iot-test",
  "description": "IOT Test",
  "version": "1.0.0",
  "contributors": [],
  "repository": {
    "type": "git",
    "url": ""
  },
  "dependencies": {
    "express": "^4.13.3",
    "node-red": "^0.11.2"
  },
  "devDependencies": {
  },
  "engines": {
    "node": "0.12.7"
  },
  "scripts": {}
}