Add fallback option if there are no services

Assets/MixedRealityToolkit.Generated/CustomProfiles/MixedRealitySpeechCommandsProfile.asset

@@ -51,3 +51,10 @@ MonoBehaviour:
       id: 0
       description: None
       axisConstraint: 0
+  - localizationKey: 
+    keyword: Select
+    keyCode: 0
+    action:
+      id: 0
+      description: None
+      axisConstraint: 0

Assets/Scenes/WebView.unity

@@ -2299,6 +2299,7 @@ Transform:
   - {fileID: 1389755617}
   - {fileID: 4283623065100561231}
   - {fileID: 2018722011}
+  - {fileID: 501711429}
   m_Father: {fileID: 0}
   m_RootOrder: 3
   m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
@@ -2372,6 +2373,52 @@ MonoBehaviour:
   dynamicItem: {fileID: 2080231666}
   serviceDiscovery: {fileID: 1389755618}
   servicesListPopulator: {fileID: 6339559048287679331}
+  dialogHandler: {fileID: 501711430}
+--- !u!1 &501711428
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+  m_Name: DialogHandler
+  m_TagString: Untagged
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+  m_Name: 
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 --- !u!1 &504187403
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Assets/Scripts/DialogHandler.cs

@@ -0,0 +1,25 @@
+using Microsoft.MixedReality.Toolkit.UI;
+using UnityEngine;
+using System;
+
+public class DialogHandler : MonoBehaviour
+{
+    [SerializeField]
+    private GameObject dialogPrefab;
+
+    public void OpenDialog(string title, string question, Action action)
+    {
+        Dialog dialog = Dialog.Open(dialogPrefab, DialogButtonType.Yes | DialogButtonType.No, title, question, true);
+        if (dialog != null)
+        {
+            // myDialog.OnClosed += OnClosedDialogEvent;
+            dialog.OnClosed += (x) =>
+            {
+                if (x.Result == DialogButtonType.Yes)
+                {
+                    action?.Invoke();
+                }
+            };
+        }
+    }
+}

Assets/Scripts/DialogHandler.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: c1b75ab140e790045b0eaeae0266d7de
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Scripts/EndpointLoader.cs

@@ -17,11 +17,15 @@ public class EndpointLoader : MonoBehaviour
     [SerializeField]
     private ServicesListPopulator servicesListPopulator;
 
+    [SerializeField]
+    private DialogHandler dialogHandler;
+
     private string apiUrl;
     private bool triedMulticast = false;
     private bool defaultEndpointLoaded = false;
     private List<GameObject> instantiatedItems = new List<GameObject>();
     private HashSet<MdnsService> availableServices = new HashSet<MdnsService>();
+    private float loadTimeout = 10f;
 
     private const string defaultApiUrl = "http://windows.local:5000/api/endpoints";
     private const string defaultEndpoint1 = "http://windows.local:8100/mystream/";
@@ -30,9 +34,30 @@ public class EndpointLoader : MonoBehaviour
     private void Start()
     {
         apiUrl = defaultApiUrl;
+        StartCoroutine(TimeoutFallback());
         StartCoroutine(LoadEndpoints());
     }
 
+    private IEnumerator TimeoutFallback()
+    {
+        float timer = 0f;
+
+        while (timer < loadTimeout && availableServices.Count == 0)
+        {
+            yield return new WaitForSeconds(1f);
+            timer += 1f;
+        }
+
+        if (availableServices.Count == 0)
+        {
+            Debug.LogWarning("Timeout reached. Loading default endpoints...");
+            dialogHandler.OpenDialog("Timeout reached", "No services found. Load default endpoints?", () =>
+            {
+                StartCoroutine(TryLoadingFromDefaultEndpoints());
+            });
+        }
+    }
+
     private Vector3 CalculateNextPosition()
     {
         if (instantiatedItems.Count == 0)
@@ -106,6 +131,15 @@ public class EndpointLoader : MonoBehaviour
             yield return request.SendWebRequest();
             ProcessEndpointResponse(request, defaultEndpoint2, ref defaultEndpointLoaded);
         }
+
+        if (!defaultEndpointLoaded)
+        {
+            Debug.LogError("Failed to load default endpoints");
+            dialogHandler.OpenDialog("Failed to load default endpoints", "Do you want to try one more time?", () =>
+            {
+                StartCoroutine(TryLoadingFromDefaultEndpoints());
+            });
+        }
     }
 
     private void ProcessEndpointResponse(UnityWebRequest request, string endpoint, ref bool loadedFlag)
@@ -133,6 +167,12 @@ public class EndpointLoader : MonoBehaviour
             yield break;
         }
 
+        if (defaultEndpointLoaded)
+        {
+            Debug.Log("Default endpoint already loaded");
+            yield break;
+        }
+
         var request = new UnityWebRequest(apiUrl, UnityWebRequest.kHttpVerbGET);
         request.downloadHandler = new DownloadHandlerBuffer();
         request.SetRequestHeader("Content-Type", "application/json");