Issue with UDP Receiver

[MogaRaghu]

I have a ESP32 WiFi module sending millisecond values ( unsigned long ) via UDP on port 52791.

I am able to read the same on a iPhone based App with no issues.

But the LabVIEW code as attached refuses to read anything and read function returns Error 56.

Not sure what is wrong. ( The laptop running the code is on the same network as the ESP32 module.

[Claire.C · Accepted solution]

Hi Raghunathan,

Can you check that your firewall is not blocking this port on your computer? Can you try different ports and see if that helps?

Best,

[MogaRaghu]

I noticed that the UDP reception was OK on another new PC.

In my laptop there was a disabled Windows Defender and also a full time Kaspersky Anti virus. In the process even private networks were being firewalled. Once this was corrected the problem was solved. 

Thanks for the suggestion !!