I have built a SharePoint provider-hosted app that retrieves data from Project Online.
I'm struggling with accessing the
Project Online OData feed at /_api/ProjectData without having to specify a user's credentials like all the samples (since I want this published to the Store).
As I understand it OData doesn't support app-only access tokens, so I get a user+add-in access token
using this method.
//Get
user+add-in access token.
string
accessToken = TokenHelper.GetAccessToken(contextToken, sharepointUrl.Authority).AccessToken;
I can use that token to make CSOM calls successfully so I know the token is valid, the user that installed my provider-hosted app has the necessary Project permissions, and the app manifest is setup
correctly.
However, when I try to use that same token in a simple WebClient to make OData REST calls by adding the token to my header:
client.Headers[HttpRequestHeader.Authorization] = $"Bearer {accessToken}";
I always get: (403) Forbidden
Can anyone shed some light on this? Or point me to an example that uses access tokens to access OData instead of user credentials?
Thanks,
Mike
