System.IO.IOException A connection attempt failed because the connected party did not
properly respond after a period of time, or established connection failed because
connected host has failed to respond.

public byte[] Receive()
{
    byte[] readBuffer = new byte[1024];
    byte[] realReceivedBytes = new byte[0];
    try
    {
        if (NetworkStream.CanRead)
        {
            int receivedBytesCount = 0;
            receivedBytesCount = NetworkStream.Read(readBuffer, 0, 1024);
            realReceivedBytes = new byte[receivedBytesCount];
            Array.Copy(readBuffer, 0, realReceivedBytes, 0, receivedBytesCount);
        }
        return realReceivedBytes;
    }
    catch (System.IO.IOException ex)
    {
        throw ex;
    }
    catch (Exception ex)
    {
        throw ex;
    }
}

catch (System.IO.IOException)
{
    if (!client.Connected)
    {
        Log("Client is not connected to host anymore.");
        break;
    }
    else
    {
        Log(String.Format("Error connecting to host. Retry attempt no. {0}",
        (numTries + 1)));
        Thread.Sleep(100);
        numTries++;
    }
}