topic Connecting and listen to a socket in Discussions

Connecting and listen to a socket

Vertigo42 — Mon, 23 Dec 2024 12:18:11 GMT

Hi, I'm Jmp 17 user.

I have a python script that is a server that keep sending short messages every 3 sec.

I'm trying to connect and receive these numbers in jmp.

I used this HTTP Request example as reference, but the callbackfn never get called.

callbackfn = function( {x}, 
write ("Message Recieved");
);

//Create a socket
con = Socket();

//Use a specific port on this computer
con << Bind( "localhost", "8081" );

//Tell this socket to be ready for other sockets to connect to it
Write( "\!nlistening on ", (con << getSockName)[3]);
con << Listen();

//When something connects to this socket, call a function to handle
//the connection.  Accept connections for the next 5 minutes.
con << Accept(callbackfn, 30000);

The Accept returns {"Accept" , "ok"}, but the callbackfn is never called.

I wrote different python client script that shows what I want to do and it works without any problem.

something like this -

    client_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    
    try:
        # Connect to the server
        client_socket.connect((host, port))
        print(f"Connected to {host}:{port}")
        
        while True:
            # Receive data from the server
            data = client_socket.recv(1024)
            if not data:
                break
            
            # Print received data
            print(f"Received: {data.decode()}")

any idea why I can't get it to work on JMP? I can't find any documentation execpt the example above.

Thanks

Re: Connecting and listen to a socket

jthi — Mon, 23 Dec 2024 12:23:51 GMT

Scripting Index does have more documentation

and there is also some in Scripting Guide in JMP Help

Re: Connecting and listen to a socket

Vertigo42 — Thu, 26 Dec 2024 08:35:14 GMT

Thanks for your reply.

I already checked the scripting Guide, the scripting index and the samples folder, I coudn't find what I'm looking for.

I'm trying to find a way to get a single number from a server each time it send it, and for now just print it but I don't want to block my JMP app during the waiting. when this will work I'll use this number to update a graph.

I couldn't find how to start a new thread like it is usually done, any other source/direction will be helpfull

Thanks