Help to learn Establish UDP connection Between MATLAB and UNITY 3D.

I want to learn establish a communication system between unity3D and MATLAB to transfer Data from MATLAB to The virtual Environment we are working on.

Answer 1

[Larasmoyo Nugroho]

First*, Matlab as server and unity as client

// matlab code

clc
clear all
tcpipServer = tcpip('0.0.0.0',55000,'NetworkRole','Server');
while(1)
data = membrane(1);
fopen(tcpipServer);
rawData = fread(tcpipServer,14,'char');
for i=1:14 rawwData(i)= char(rawData(i));
end
fclose(tcpipServer);
end

// Unity C# code

 using System.Collections;
 using System.Net;
 using System.Net.Sockets;
 using System;
 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 = 55000;
    void Start () {
        setupSocket ();
        Debug.Log ("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");
            Debug.Log ("socket is sent");
        }
        catch (Exception e) {
            Debug.Log("Socket error: " + e);
        }
    }
}

[Rakhi Agarwal]

Do you have a way to get constant data transfer between unity and matlab? From above code, I can send data from Matlab to untiy once and then connection is closed. Is there a way to constantly transfer data from Matlab to unity?

Answer 2

[Larasmoyo Nugroho]

Second, unity as server and Matlab as client

Unity C# code

using UnityEngine;
using System.Collections;
using System.Net;
using System.Net.Sockets;
using System.Linq;
using System;
using System.IO;
using System.Text;

public class readSocket : MonoBehaviour {

      // Use this for initialization
      TcpListener listener;
      String msg;

      void Start () {
          listener=new TcpListener (55001);
          listener.Start ();
          print ("is listening");
      }
      // Update is called once per frame
      void Update () {
          if (!listener.Pending ())
          {
          } 
          else 
          {
              print ("socket comes");
              TcpClient client = listener.AcceptTcpClient ();
              NetworkStream ns = client.GetStream ();
              StreamReader reader = new StreamReader (ns);
              msg = reader.ReadToEnd();
              print (msg);

          }
      }
  }

//Matlab code

clc
clear all
tcpipClient = tcpip('127.0.0.1',55001,'NetworkRole','Client');
set(tcpipClient,'Timeout',30);
fopen(tcpipClient);
a='yah!! we could make it';
fwrite(tcpipClient,a);
fclose(tcpipClient);

in each implementation the server should runs first before the client otherwise you will get the bellow error

Connection refused:in Matlab or remote machine actively refuse the connection in unity