ADURL failing to open specific URL

[Marco Filho via Tech-talk <tech-talk at aps.anl.gov>]

Hi all

I'm using ADURL R2-3 with ADSupport R1-10 and ADGraphicsMagick. I'm trying to use it to integrate with Hikivision camera.

The module has succesfully worked with several other URL cameras here, and testing it with a few internal URLs works.
For now, my testing criteria is that if something works like:

curl -o output <TestURL>

Then it would probably work with ADURL. Indeed, this:

caput $(PREFIX)URL1 "https://myUrl"
caput $(PREFIX)Acquire 1

Works fine with a lot of cameras here. However, for this particular hikivision camera I'm getting the error:

dbpf URL1:cam1:URL1 "https://MYURL"

dbpf URL1:cam1:Acquire 1
DBF_STRING:         "Acquire"
2024/07/17 14:26:11.700 URLDriver:readImage: error reading URL="" Unable to access configuration file (delegates.mgk) reported by ../supportApp/GraphicsMagickSrc/magick/blob.c:1971 (GetConfigureBlob)

Curiously, I tried it with a different url which I got from any image in google images:

curl -o output https://tmssl.akamaized.net/images/foto/galerie/neymar-brazil-2023-1694521247-116480.jpg

gets me a nice image of Neymar. However:

ics-ups-ioc-dev-344581 > dbpf $(PREFIX)cam1:Acquire 1
DBF_STRING:         "Acquire"
ics-ups-ioc-dev-344581 > 2024/07/17 14:29:57.383 URLDriver:readImage: error reading URL="" Unable to open file (//tmssl.akamaized.net/images/foto/galerie/neymar-brazil-2023-1694521247-116480.jpg) reported by ../supportApp/GraphicsMagickSrc/magick/constitute.c:1540 (ReadImage)

No smiling neymar for my EPICS viewer :(
Am I doing something wrong?

What I was able to find out until now:

Inside the driver, the line that generates the exception is URLDriver.cpp:82 image.read(URLString) because it immediately gets out of the try loop and catches an exception.
It calls Image::read(), which calls Image *ReadImage in constitute.c:1449

> From now on I can't quite understand what is happening... I know the condition in

if ((*image_info->filename == '@') && (!IsAccessibleNoLogging(image_info->filename)))

return(ReadImages(image_info,exception));

Is not evaluating to True but I don't think it should anyway... I still didn't find anything that seems like the method that should actually read the image from the URL.


Thanks for any insights.