timeout after 2000 millis in local network

@@ -2,6 +2,7 @@ import {Injectable} from '@angular/core';
 import {Http,Response,Headers} from '@angular/http';
 import { DeviceInfo } from './../api/device-info';
 import { Node } from './../api/node';
+import 'rxjs/add/operator/timeout'
 
 export const ERROR_CODE_UNAUTHORIZED:string = "unauthorized";
 export const ERROR_CODE_NOT_FOUND:string = "not-found";
@@ -100,6 +101,7 @@ export class Rest {
         return new Promise<Node> ((resolve, reject) => {
             if (node && node.IP) {
                 this.http.get("http://" + node.IP + ":" + Rest.localWebPort + "/device")
+                    .timeout(2000)
                     .subscribe(response => {
                         try {
                             let body = response.json();