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Forum Discussion
Service Unavailable 503
When I http POST to the above URL for refreshing Access Token in my code, a 503 service unavailable is returned.
However there is no any issue when I do the same thing in POSTMAN
Any body ever had this issue before? Am I missing something in the HTTP header/body?
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). 😉
- Greg-DB
Dropbox Staff
ram4444 Can you share the full HTTP request (headers and body, if any) that results in a 503 so we can look into it? Be sure to redact your refresh token, app key, and app secret values though. Please also share the full response (headers and body, if any) for reference. Thanks in advance!
The request contains only the parameters but no header/body specified
val url = "https://api.dropbox.com/oauth2/token?grant_type=refresh_token&refresh_token=$longTimeRefreshToken&client_id=$clientId&client_secret=$clientSecret"My code is Kotlin and I am using Fuel as the HTTP Library (which is on top of OKHTTP)
I tried in POSTMAN and the result is normal
- Greg-DB
ram4444 I understand you're including the parameters on the URL itself, but the actual HTTP request issued by your client would involve some start line and header(s) at least. So that we can investigate the request that causes that error, please print out and share the actual HTTP request itself. You may need to refer to the documentation for your client for information on how to enable more verbose output to show the request.
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