Fixes #128 - MacOS does not support "DontFragment"

src/Impostor.Server/Net/Redirector/NodeLocatorUDP.cs

@@ -38,10 +38,15 @@ namespace Impostor.Server.Net.Redirector
 
                 _logger.LogWarning("Node server will send updates to {0}.", endpoint);
                 _server = endpoint;
-                _client = new UdpClient
+                _client = new UdpClient();
+
+                try
                 {
-                    DontFragment = true
-                };
+                    _client.DontFragment = true;
+                }
+                catch (SocketException)
+                {
+                }
             }
         }
 
@@ -126,4 +131,4 @@ namespace Impostor.Server.Net.Redirector
             public bool Expired => LastUpdated < DateTimeOffset.UtcNow.AddHours(-1);
         }
     }
-}
+}

src/Impostor.Server/Net/Redirector/NodeLocatorUDPService.cs

@@ -30,10 +30,15 @@ namespace Impostor.Server.Net.Redirector
                 throw new ArgumentException("UdpMasterEndpoint should be in the ip:port format.");
             }
 
-            _client = new UdpClient(endpoint)
+            _client = new UdpClient(endpoint);
+
+            try
             {
-                DontFragment = true,
-            };
+                _client.DontFragment = true;
+            }
+            catch (SocketException)
+            {
+            }
         }
 
         protected override async Task ExecuteAsync(CancellationToken stoppingToken)
@@ -93,4 +98,4 @@ namespace Impostor.Server.Net.Redirector
             _logger.LogWarning("Master server node update listener is stopping.");
         }
     }
-}
+}