Improve tests

Emby.Server.Implementations/EntryPoints/UdpServerEntryPoint.cs

@@ -1,5 +1,6 @@
 #nullable enable
 
+using System;
 using System.Net.Sockets;
 using System.Threading;
 using System.Threading.Tasks;
@@ -51,6 +52,8 @@ namespace Emby.Server.Implementations.EntryPoints
         /// <inheritdoc />
         public Task RunAsync()
         {
+            CheckDisposed();
+
             try
             {
                 _udpServer = new UdpServer(_logger, _appHost, _config);
@@ -64,6 +67,14 @@ namespace Emby.Server.Implementations.EntryPoints
             return Task.CompletedTask;
         }
 
+        private void CheckDisposed()
+        {
+            if (_disposed)
+            {
+                throw new ObjectDisposedException(this.GetType().Name);
+            }
+        }
+
         /// <inheritdoc />
         public void Dispose()
         {

Emby.Server.Implementations/Udp/UdpServer.cs

@@ -79,7 +79,7 @@ namespace Emby.Server.Implementations.Udp
         /// Starts the specified port.
         /// </summary>
         /// <param name="port">The port.</param>
-        /// <param name="cancellationToken"></param>
+        /// <param name="cancellationToken">The cancellation token to cancel operation.</param>
         public void Start(int port, CancellationToken cancellationToken)
         {
             _endpoint = new IPEndPoint(IPAddress.Any, port);