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Service Unavailable 503
https://api.dropbox.com/oauth2/token?grant_type=refresh_token&refresh_token=<REFRESH_TOKEN>&client_id=<MYAPPID>&client_secret=<MYSECRET>
When I http POST to the above URL for refreshing Access ...
ram4444 Thanks for following up and sharing that, and apologies for the delay. (It appears your latest message may have initially been caught in a spam filter.)
Anyway, I see your client is sending a "TE" header in the request, but no "Connection" header. According to the specification, the corresponding "Connection" header value is required when setting the "TE" header. I am able to reproduce the error you see when setting "TE" and not "Connection", and I am able to resolve the error by setting both "TE" and "Connection" (specifically, "Connection: TE"). If you are not able to remove the "TE" header your client is setting, you should try to have it set "Connection: TE" as well.
ram4444 wrote:...
When I http POST to the above URL for ...
Hi ram4444,
How exactly have you posted the above URL? 🤔 The URL looks like a GET URL! What did you post in the body of your POST request? 🧐 Take in mind that only changing the method name is NOT enough (in spite error check of Dropbox API seems compromised). 😉
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