I’ve encountered a problem with the UDP driver. I’m trying to bring in a sequence of bytes which contain binary representations of different values (e.g. 32-bit integers and 32-bit IEEE floating point numbers). I’ve set the Message Delimiter Type to PacketBased, which brings the whole sequence in as…

I don’t think these messages can survive a round trip from binary -> unicode -> binary again. Or, at least, I haven’t figured out a way to get the original binary out of a unicode string yet. The UDP driver message tag may not be the appropriate conduit for your data. Maybe you can do the UDP part …

Do you mean some kind of Gateway script, or something lower level than that?

Yeah, maybe start something up in a gateway startup script that runs until shutdown. I think simple socket communication is easy enough to do in Python/Jython that you should try to avoid the overhead involved with writing a module.

I tried the following script in the Gateway startup script: import socket import binascii UDP_IP = "192.168.1.250" UDP_PORT = 5005 sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) sock.bind((UDP_IP, UDP_PORT)) while True: data, addr = sock.recvfrom(1024) print "Received %s from %s" % (b…

You’ll probably want to throw all that into a function and then invokeAsync that function.

Nearly! The script is now def read_udp(): import socket import binascii UDP_IP = "192.168.1.250" UDP_PORT = 5005 sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) sock.bind((UDP_IP, UDP_PORT)) while True: data, addr = sock.recvfrom(1024) print "Received %s from %s" % (binascii.h…

The scoping has changed a bit for 7.7. Try importing system as well.

I saw that just as you posted Jordan :slight_smile: I’m now getting an ‘Address already in use’ error. It doesn’t seem to be closing the socket before trying to open another one the next time I save the project.

Was afraid of this… You’re going to need to shutdown the socket you create, in a shutdown script perhaps? But then you’ll need to be able to get ahold of the socket… maybe you can store it as a global singleton? Seems there was just a thread about that kind of thing.

For anyone else testing this, my Python script for sending data to the Gateway from the command line is as follows: import socket import struct UDP_IP = "192.168.1.250" UDP_PORT = 5005 sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) MESSAGE = struct.pack("B", 0x01) sock.sendto(MESSAGE, (…

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