1 files changed, 13 insertions, 9 deletions

diff --git a/Emby.Server.Implementations/Udp/UdpServer.cs b/Emby.Server.Implementations/Udp/UdpServer.cs
index a3bbd6df0..2d806c146 100644
--- a/Emby.Server.Implementations/Udp/UdpServer.cs
+++ b/Emby.Server.Implementations/Udp/UdpServer.cs
@@ -27,9 +27,9 @@ namespace Emby.Server.Implementations.Udp
 
         private readonly byte[] _receiveBuffer = new byte[8192];
 
-        private Socket _udpSocket;
-        private IPEndPoint _endpoint;
-        private bool _disposed = false;
+        private readonly Socket _udpSocket;
+        private readonly IPEndPoint _endpoint;
+        private bool _disposed;
 
         /// <summary>
         /// Initializes a new instance of the <see cref="UdpServer" /> class.
@@ -52,7 +52,10 @@ namespace Emby.Server.Implementations.Udp
 
             _endpoint = new IPEndPoint(bindAddress, port);
 
-            _udpSocket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
+            _udpSocket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp)
+            {
+                MulticastLoopback = false,
+            };
             _udpSocket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);
         }
 
@@ -74,6 +77,7 @@ namespace Emby.Server.Implementations.Udp
 
             try
             {
+                _logger.LogDebug("Sending AutoDiscovery response");
                 await _udpSocket.SendToAsync(JsonSerializer.SerializeToUtf8Bytes(response), SocketFlags.None, endpoint, cancellationToken).ConfigureAwait(false);
             }
             catch (SocketException ex)
@@ -99,7 +103,8 @@ namespace Emby.Server.Implementations.Udp
             {
                 try
                 {
-                    var result = await _udpSocket.ReceiveFromAsync(_receiveBuffer, SocketFlags.None, _endpoint, cancellationToken).ConfigureAwait(false);
+                    var endpoint = (EndPoint)new IPEndPoint(IPAddress.Any, 0);
+                    var result = await _udpSocket.ReceiveFromAsync(_receiveBuffer, endpoint, cancellationToken).ConfigureAwait(false);
                     var text = Encoding.UTF8.GetString(_receiveBuffer, 0, result.ReceivedBytes);
                     if (text.Contains("who is JellyfinServer?", StringComparison.OrdinalIgnoreCase))
                     {
@@ -112,7 +117,7 @@ namespace Emby.Server.Implementations.Udp
                 }
                 catch (OperationCanceledException)
                 {
-                    // Don't throw
+                    _logger.LogDebug("Broadcast socket operation cancelled");
                 }
             }
         }
@@ -125,9 +130,8 @@ namespace Emby.Server.Implementations.Udp
                 return;
             }
 
-            _udpSocket?.Dispose();
-
-            GC.SuppressFinalize(this);
+            _udpSocket.Dispose();
+            _disposed = true;
         }
     }
 }