Question HTTP Server to render images on HoloLens doesn't work

Hi,

I programmed an Unity Server what receives Images via HTTP and renders the received images in an spirit object.

This Programm works in the Unity emulator.

When I debug, the debugger stops at the the "listener.Start();" line.

Does anybody know what the problem is?

Code (CSharp):

1. using UnityEngine.SceneManagement;
2. using System;
3. using System.Collections;
4. using System.Collections.Generic;
5. using System.IO;
6. using System.Drawing;
7. using System.Net;
8. using System.Threading;
9. using System.Threading.Tasks;
10. using UnityEngine;
11. using System.Text.RegularExpressions;
12. using System.Net.Sockets;
13. using UnityEngine.UI;
14. using Color = UnityEngine.Color;
15.  
16.  
17. #if UNITY_EDITOR
18. #else
19. using Windows.Networking.Sockets;
20. using Windows.Networking;
21. using Windows.Storage;
22. using Windows.Storage.Streams;
23. #endif
24.  
25.  
26. public class HTTPServer : MonoBehaviour
27. {
28.     private Sprite img1;
29.     public SpriteRenderer sr;
30.  
31.     public void startReceiving()
32.     {
33.         ReceiveHTTP();
34.     }
35.  
36.         private async void ReceiveHTTP()
37.     {
38.         Texture2D tex = new Texture2D(2, 2);
39.         var listener = new HttpListener();                                  
40.         listener.Prefixes.Add("http://+:8087/VDS_png/");              
41.         listener.Start();                                                  
42.  
43.         try
44.         {
45.  
46.  
47.             while (true)
48.             {
49.                 var ctx = await listener.GetContextAsync();              
50.                 var req = ctx.Request;
51.                 var stream = req.InputStream;
52.                 var buf = new byte[20000];
53.                 int len;
54.                 while ((len = stream.Read(buf, 0, buf.Length)) != 0)              
55.                 ctx.Response.StatusCode = 200;                                
56.                 ctx.Response.Close();
57.  
58.                 bool v = tex.LoadImage(buf);
59.                 if (v)
60.                 {
61.                     img1 = Sprite.Create(tex, new Rect(0.0f, 0.0f, tex.width, tex.height), new Vector2(0.5f, 0.5f), 100.0f);
62.                     sr.sprite = img1;
63.                 }
64.  
65.             }
66.  
67.         }
68.         finally
69.         {
70.             listener.Stop();
71.             listener.Close();
72.         }
73.  
74.     }
75.  
76. }
77.