How to make a simple HTTP request from server outside sandbox when developing a custom visual?

[NoanHu]

When i call the api from the server outside sandbox , it will be blocked by csp (Content Security Policy) of the visual sandbox. How to solve this problem. Thanks.

[Anonymous · Accepted solution]

HI @NoanHu,

In fact, these operations are been blocked due to power bi service security policies, and currently you can't customize these settings.

Power BI Security - Power BI | Microsoft Docs

If you are invoking the external image or other types of resource files from request, I'd like to suggest you directly embed them to your custom visual.

Power BI Custom Visual Tip: How to Render an SVG or PNG | Jon Gallant

If the visual still requires additional table records to help analysis. (e.g. map) I'd like to suggest you change to import instead of directly sending the request to an external URL.

typescript - power bi custom visuals use json file - Stack Overflow
Regards,

Xiaoxin Sheng

[NoanHu]

I found a workround shared by others on stackoverflow. He seems to use Azure Storage Blob to make http requests. I tried to do this, but it still seems to be blocked. What do you think of his solution.