TESTING NEEDED

Proposing idea to de-asynchronize Sonos device discovery with a timeout event for push.
I have no IDE at hand right now, so please check syntax before merging!
I have no Sonos devices, so please check somebody with the hardware at hand!
Thanks
Raoul

platforms/Sonos.js

@@ -6,6 +6,8 @@ function SonosPlatform(log, config){
     this.config = config;
     this.name = config["name"];
     this.playVolume = config["play_volume"];
+    // timeout for device discovery
+    this.discoveryTimeout = (config.deviceDiscoveryTimeout || 10)*1000; // assume 10sec as a default
 }
 
 SonosPlatform.prototype = {
@@ -16,6 +18,18 @@ SonosPlatform.prototype = {
         // track found devices so we don't add duplicates
         var roomNamesFound = {};
         
+        // collector array for the devices from callbacks
+        var devicesFound = [];
+        // tell the sonos callbacks if timeout already occured
+        var timeout = false;
+        
+        // the timeout event will push the accessories back
+        setTimeout(function(){
+            timeout=true;
+            callback(devicesFound);
+        }, this.discoveryTimeout);
+        
+        
         sonos.search(function (device) {
             that.log("Found device at " + device.host);
 
@@ -26,9 +40,13 @@ SonosPlatform.prototype = {
                     if (!roomNamesFound[roomName]) {
                         roomNamesFound[roomName] = true;
                         that.log("Found playable device - " + roomName);
+                        if (timeout) {
+                            that.log("Ignored: Discovered after timeout (Set deviceDiscoveryTimeout parameter in Sonos section of config.json)");
+                        }
                         // device is an instance of sonos.Sonos
                         var accessory = new SonosAccessory(that.log, that.config, device, description);
-                        callback([accessory]);
+                        // add it to the collector array
+                        devicesFound.push(accessory);
                     }
                     else {
                         that.log("Ignoring playable device with duplicate room name - " + roomName);