Microsoft Graph hostedContents id contains a slash

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The endpoint for retrieving hosted content bytes for an image is 

GET https://graph.microsoft.com/beta/chats/{id}/messages/{id}/hostedContents/{id}/$value

However, the id for hostedContents items is Base64 encoded. For those ids that contain a slash (/), the request fails with 400. Encoding the slash as %2f also fails with 400. Switching the slash to _ or - results in 404.

How can I retrieve hostedContents bytes for an image when the id contains a slash?

microsoft-graph-sdks microsoft-graph-api
1 Answers

In order for this to work you will need to double encode and use %252F instead when dealing with the Microsoft Graph API:

encodeURIComponent(string).replace(/%2F/g, "%252F");

This should work for any value that has a / including ID's.

I go into a bit more detail on this Github issue (to get the docs fixed):

https://github.com/microsoftgraph/microsoft-graph-docs/issues/10167

user_8832250
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