I am using Alamofire for making networking calls, The service calls are failing on the following reasons:

A few reasons are listed below, The original urls are replaced with dummy urls.

FAILURE: Error Domain=NSURLErrorDomain Code=-999 "cancelled" UserInfo={NSUnderlyingError=0x1182bd920 {Error Domain=kCFErrorDomainCFNetwork Code=-999 "(null)" UserInfo={_kCFStreamErrorCodeKey=89, _kCFStreamErrorDomainKey=1}}, NSErrorFailingURLStringKey= https://someurl.php , NSErrorFailingURLKey= https://someurl.php , _kCFStreamErrorDomainKey=1, _kCFStreamErrorCodeKey=89, NSLocalizedDescription=cancelled}

FAILURE: Error Domain=NSURLErrorDomain Code=-1003 "A server with the specified hostname could not be found." UserInfo={NSUnderlyingError=0x105fe8030 {Error Domain=kCFErrorDomainCFNetwork Code=-1003 "(null)" UserInfo={_kCFStreamErrorCodeKey=8, _kCFStreamErrorDomainKey=12}}, NSErrorFailingURLStringKey= https://sampleurl.php , NSErrorFailingURLKey= https://example.php , _kCFStreamErrorDomainKey=12, _kCFStreamErrorCodeKey=8, NSLocalizedDescription=A server with the specified hostname could not be found.}

Seeking an active solution for this problem.

Thanks & Regards

These errors are pretty self explanatory:

• Error -999 is

  NSURLErrorCancelled

  , meaning that something cancelled the request.

• Error -1003 is

  NSURLErrorCannotFindHost

  , meaning that the DNS lookup failed.

Are you able to easily reproduce these failures? If so, my recommended next step is to enable CFNetwork diagnostic logging , which will give you some insight into the source of the error.

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