System.Net.Sockets.Tests.DualModeBeginAccept.DualModeConnect_BeginAccept_Helper C# (CSharp) Метод

        private void DualModeConnect_BeginAccept_Helper(IPAddress listenOn, IPAddress connectTo)
        {
            using (Socket serverSocket = new Socket(SocketType.Stream, ProtocolType.Tcp))
            {
                int port = serverSocket.BindToAnonymousPort(listenOn);
                serverSocket.Listen(1);
                IAsyncResult async = serverSocket.BeginAccept(null, null);
                SocketClient client = new SocketClient(_log, serverSocket, connectTo, port);

                // Due to the nondeterministic nature of calling dispose on a Socket that is doing
                // an EndAccept operation, we expect two types of exceptions to happen.
                Socket clientSocket;
                try
                {
                    clientSocket = serverSocket.EndAccept(async);
                    Assert.True(clientSocket.Connected);
                    AssertDualModeEnabled(clientSocket, listenOn);
                    Assert.Equal(AddressFamily.InterNetworkV6, clientSocket.AddressFamily);
                    if (connectTo == IPAddress.Loopback)
                    {
                        Assert.Contains(((IPEndPoint)clientSocket.LocalEndPoint).Address, ValidIPv6Loopbacks);
                    }
                    else
                    {
                        Assert.Equal(connectTo.MapToIPv6(), ((IPEndPoint)clientSocket.LocalEndPoint).Address);
                    }
                    Assert.Equal(connectTo.MapToIPv6(), ((IPEndPoint)clientSocket.LocalEndPoint).Address);
                }
                catch (ObjectDisposedException) { }
                catch (SocketException) { }

                Assert.True(
                    client.WaitHandle.WaitOne(TestSettings.PassingTestTimeout),
                    "Timed out while waiting for connection");

                if (client.Error != SocketError.Success)
                {
                    throw new SocketException((int)client.Error);
                }
            }
        }
    }