Objective-C iOS NSURLConnection statusCode 400 No body returned

Question

not really sure where to start here other then to dive into CF (I REALLY don't want to do that) but....

I have an NSURLConnection signing OAuth2 requests to an ASP.NET WebAPI Resource Server, this resource server returns JSON body AND statusCode 400. I have yet to find a way to parse the data from the response when it returns code 400.

Does anyone here have any ideas? I would prefer to keep using NSURLConnection as this is only an OAuth2 consumer class. My other code is using restkit, but I do not want the OAuth2 end to require said library.

Answer 1

Interestingly enough, MVC4 ActionResult is broken in the RTM. Switching it over to Pure WebApi and fine tuning the response, I was able to finesse it into returning the proper data, it was likely serializing the json improperly which other languages weren't catching.

Answer 2

The process to parse data from a request which returns status 400 should be identical to that of a request returning status 200.

Simply note the status code in -connection:didReceiveResponse: and allow the request to continue; you will receive any additional data that the server sends in -connection:didReceiveData: as usual. Finally, you'll get a -connectionDidFinishLoading: call when all data has been received, and you can parse the JSON there.

Answer 3

Does your HTTP request Accept header specify "application/json"? If so, then this is probably an IIS bug and not iOS.