HTTP POST Binding

Ignition
1

Hi, I am working on a labeling project and I want to use Labelary API to render a ZPL code for me as a preview. I tried using a image component in Perspective and that did work with GET request (just like you do img tag in html). My labels contain image data so it turns out I exceeded URL character count and I need to use POST and send the ZPL in the request body.

I tried using a HTTP binding and I could not get it to work. Can anyone advise what else I can try? This is the binding configuration:

image
image961×866 51.3 KB

At this point I am getting "unable to find valid certification path to requested target" exception.

I tried the same thing in Postman with no issues.

Thanks!

2

Is your gateway running on the same machine as Postman?

This means the root CA that signed the certificate of the endpoint you're talking to is not trusted. If this is a public website then it probably means you're on a corporate network that is proxying/MITMing your traffic and inserting its own CA, in which case you need to add that CA to Ignition's supplemental certificate store: Security Certificates - Ignition User Manual 8.1 - Ignition Documentation

3

Yes. I got it working by using plain HTTP. Now I have entirely different problem which is handling the PNG data in the response.

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image963×868 51.4 KB

Should I create a separate thread for that?

4

Personally I don't care either way since this was so short and involved just the 2 of us, but it might be cleaner for future searchers if you did.

1 Like
5

A post was merged into an existing topic: Rendering ZPL PNG data in perspective