Mobile

private static NetworkStream stream;
private static TcpClient client;
if (client == null)
{
    client = new TcpClient();
    int port = int.Parse(strPort);
    client.Connect(server, port);
}
stream = client.GetStream();
StreamWriter writer = new StreamWriter(stream, Encoding.GetEncoding("Windows-1251"));
writer.AutoFlush = false;
writer.Write(Encoding.GetEncoding("Windows-1251").GetBytes(message).Length);
writer.Write(message);
writer.Flush();