using socket.io with events from matlab to a java sever

Hello, I am trying to connect from Matlab to a server that uses socket connection and publishes JSON files through event. This data can be accessed via the socket.on method in java or @sio.on('event' ) in python. Can someone indicate how this can be achieved with Matlab?

I was able to connect to the server with the following:

    import java.net.Socket
    import java.io.*
    import socket.io.*
    input_socket = Socket(host, port);

But I am unable to listen to the event on the socket to get the data.

Thanks,

Answer 1

[Nagarjuna Manchineni]

I see that you are trying to connect the socket by using the following syntax:

input_socket = Socket(host, port);

This is causing the issue. For creating a Java object inside MATLAB you need to use the function 'javaObject'.

See the following documentation link for more information:

https://www.mathworks.com/help/matlab/ref/javaobject.html

For example, for creating a socket you can use the following command:

 client = javaObject('java.net.Socket', 'localhost', 4000);

For sending data from the client to server:

outToServer  = client.getOutputStream();
out = javaObject('java.io.DataOutputStream', outToServer)
out.writeUTF('Hello from client');

For reading the data from the server:

inFromServer = client.getInputStream();
in = javaObject('java.io.DataInputStream', inFromServer)
in.readUTF()

I hope this helps!