Matlab server for sending a file

I'm trying to send a jpeg file from matlab to unity and it's not connecting..any idea why?

matlab server

function server(message, output_port, number_of_retries)

      import java.net.ServerSocket
      import java.io.*

      if (nargin < 3)
          number_of_retries = 20; % set to -1 for infinite
      end
      retry             = 0;

      server_socket  = [];
      output_socket  = [];

      while true

          retry = retry + 1;

          try
              if ((number_of_retries > 0) && (retry > number_of_retries))
                  fprintf(1, 'Too many retries\n');
                  break;
              end

              fprintf(1, ['Try %d waiting for client to connect to this ' ...
                          'host on port : %d\n'], retry, output_port);

              % wait for 1 second for client to connect server socket
              server_socket = ServerSocket(output_port);
              server_socket.setSoTimeout(1000);

              output_socket = server_socket.accept;

              fprintf(1, 'Client connected\n');

              output_stream   = output_socket.getOutputStream;
              d_output_stream = DataOutputStream(output_stream);

              % output the data over the DataOutputStream
              % Convert to stream of bytes
              fprintf(1, 'Writing %d bytes\n', length(message))
              d_output_stream.writeBytes(char(message));
              d_output_stream.flush;

              % clean up
              server_socket.close;
              output_socket.close;
              break;

          catch
              if ~isempty(server_socket)
                  server_socket.close
              end

              if ~isempty(output_socket)
                  output_socket.close
              end

              % pause before retrying
              pause(1);
          end
      end
  end

this is my unity

using System.IO;public class Socket : MonoBehaviour {
  // Use this for initialization
  internal Boolean socketReady = false;
  TcpClient mySocket;
  NetworkStream theStream;
  StreamWriter theWriter;
  StreamReader theReader;
  String Host = "localhost";
  Int32 Port = 53000;
  void Start () {
    setupSocket ();
    Console.Write ("socket is set up");
  }
  // Update is called once per frame
  void Update () {
  }
  public void setupSocket() {
    try {
      mySocket = new TcpClient(Host, Port);
      theStream = mySocket.GetStream();
      theWriter = new StreamWriter(theStream);
      socketReady = true;
      //writeSocket("yah!! it works");
      Console.Write ("socket is sent");
    }
    catch (Exception e) {
      Debug.Log("Socket error: " + e);
    }
  }
}