CORS error on any endpoint

[Anton P]

After successful authorization and getting the token I try to test it by fetching basic '/user' endpoint and I always get CORS error. Chrome Browser.

1) with preflish request:

2) Without preflight request:

What am I doing wrong, please help!

[Anton P · Accepted solution]

OK, I figured that out. Silly mistake. Appears that 'api.dropboxapi.com/2/check/user'

is a POST method while I was sending a GET request. The mistake would be avoided if the documentation stated that it's a POST message instead of just specifying that in a curl example which I haven't looked at.

[Greg-DB]

Can you share the full error output for reference?

Looking at the screenshots though, I do see two things that should be corrected:

• You should use POST instead of GET.
• The /2/check/user endpoint is an RPC-style endpoint, so you should supply the API parameter ("query", in this case) in JSON in the request body, not as a URL parameter

[Greg-DB]

It looks like our messages just crossed. I'm glad to hear you already sorted this out, and thanks for the feedback!