TcpSocket: Обычно разрешается только одно использование адреса сокета

public async void StartListening(int port)
{
    if (CancellationTokenSource == null)
        CancellationTokenSource = new CancellationTokenSource();
    _cancellationToken = CancellationTokenSource.Token;
    Clients = new ObservableCollection<Client>();
    BindingOperations.EnableCollectionSynchronization(Clients, _lockObject);
 
    try
    {
        while (_tcpListen == null)
        {
            ShowCallbackMessageAction?.Invoke("Try to start server");
            _tcpListen = AweSock.TcpListen(port);
 
            if (_tcpListen != null)
            {
                ShowCallbackMessageAction?.Invoke("Server started");
 
                var waitForConnectionTask = Task.Run(() => WaitForConnectionLoop(), _cancellationToken);
                var checkClientsConnectionTask = Task.Run(() => CheckClientsConnectionLoop(), _cancellationToken);
 
                await Task.WhenAll(waitForConnectionTask, checkClientsConnectionTask);
            }
 
            // https://stackoverflow.com/a/32768637/4944499
            await Task.Delay(1000, _cancellationToken).ContinueWith(task => { });
        }
    }
    catch (Exception exception)
    {
        ShowCallbackMessageAction?.Invoke($"Error on start server: {exception.Message}");
    }
}

public void StopListening()
{
    ShowCallbackMessageAction?.Invoke("Begin stop server...");
    ShowCallbackMessageAction?.Invoke("Disconnect all clients");
    DisconnectAllClients();
    CancellationTokenSource?.Cancel();
    _tcpListen?.Close();
    _tcpListen = null;
    ShowCallbackMessageAction?.Invoke("Server stopped");
}

public static ISocket TcpListen(int port, int backlog = 10)
{
    var listenSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
    //var ip = new IPAddress(new byte[] { 0, 0, 0, 0 });
    //var localEndPoint = new IPEndPoint(ip, port);
    IPEndPoint localEndPoint = new IPEndPoint(IPAddress.Any, port);
    listenSocket.Bind(localEndPoint);
    listenSocket.Listen(backlog);
    return AwesomeSocket.New(listenSocket);
}

var thread = new Thread(() => TcpAcceptThread(listenSocket, callback)) {IsBackground = true};
thread.Start();