Ignition WebDev URL Not Accepted by LPR Camera

Hi everyone,

I’m receiving LPR data in Ignition using a WebDev endpoint, and when I manually send JSON data using cURL to:

http://<Ignition-IP>:8088/system/webdev/File_Transfer/LPR/receive

Ignition receives the data correctly and stores it in PostgreSQL.
So the WebDev script is working.

However, when I enter the same URL into the Milesight camera’s HTTP Notification settings, Ignition receives nothing—no logs in ignition, no errors, and no incoming POST requests. The camera is capturing plates, but it looks like the camera is not triggering the Ignition URL.

In the Milesight documentation, the required format is:

http://IP:Port/api/lpr

I’m not sure how to map this requirement to Ignition’s WebDev path.
Should the URL be rewritten or simplified so the camera will accept it?
For example:

You cannot. You may need a reverse proxy in front of Ignition that silently proxies the URL.

Consider running wireshark to see exactly what URL the camera is trying to reach.