如何正常重新连接到套接字

我有一个以下方法连接到程序启动时的终点

ChannelSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
var remoteIpAddress = IPAddress.Parse(ChannelIp);
ChannelEndPoint = new IPEndPoint(remoteIpAddress, ChannelPort);
ChannelSocket.Connect(ChannelEndPoint);

我还有一个定时器,设置为每60秒触发一次CheckConnectivity,它会尝试将任意字节数组发送到终点,以确保连接仍然存在,如果发送失败,它将尝试重新连接.

public bool CheckConnectivity(bool isReconnect)
{
    if (ChannelSocket != null)
    {
        var blockingState = ChannelSocket.Blocking;
        try
        {
            var tmp = new byte[] { 0 };
            ChannelSocket.Blocking = false;
            ChannelSocket.Send(tmp);
        }
        catch (SocketException e)
        {
            try
            {
                ReconnectChannel();
            }
            catch (Exception ex)
            {
                return false;
            }
        }
    }
    else
    {
        ConnectivityLog.Warn(string.Format("{0}:{1} is null!", ChannelIp, ChannelPort));
        return false;
    }

    return true;
} 

private void ReconnectChannel()
{
    try
    {
        ChannelSocket.Shutdown(SocketShutdown.Both);
        ChannelSocket.Disconnect(true);
        ChannelSocket.Close();
    }
    catch (Exception ex)
    {
        ConnectivityLog.Error(ex);
    }

    ChannelSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
    var remoteIpAddress = IPAddress.Parse(ChannelIp);
    ChannelEndPoint = new IPEndPoint(remoteIpAddress, ChannelPort);
    ChannelSocket.Connect(ChannelEndPoint);
    Thread.Sleep(1000);

    if (ChannelSocket.Connected)
    {
        ConnectivityLog.Info(string.Format("{0}:{1} is reconnected!", ChannelIp, ChannelPort));
    }
    else
    {
        ConnectivityLog.Warn(string.Format("{0}:{1} failed to reconnect!", ChannelIp, ChannelPort));
    }
}

所以我如何测试上面的内容,就是从我的以太网设备上拔掉LAN电缆,允许我的代码尝试重新连接(显然会失败)并重新连接回LAN电缆.

但是,即使重新连接LAN电缆(能够ping)后,我的重新连接方法中的ChannelSocket.Connect(ChannelEndPoint)也会抛出此错误

No connection could be made because the target machine actively refused it 192.168.168.160:4001

如果我要重新启动整个应用程序,它会成功连接.我如何调整我的重新连接方法,以便我不必重新启动我的应用程序以重新连接回我的以太网设备？