Undocumented NSURLErrorDomain error codes (-1001, -1003 and -1004) using StoreKit

All error codes are on "CFNetwork Errors Codes References" on the documentation (link)

A small extraction for CFURL and CFURLConnection Errors:

  kCFURLErrorUnknown   = -998,
  kCFURLErrorCancelled = -999,
  kCFURLErrorBadURL    = -1000,
  kCFURLErrorTimedOut  = -1001,
  kCFURLErrorUnsupportedURL = -1002,
  kCFURLErrorCannotFindHost = -1003,
  kCFURLErrorCannotConnectToHost    = -1004,
  kCFURLErrorNetworkConnectionLost  = -1005,
  kCFURLErrorDNSLookupFailed        = -1006,
  kCFURLErrorHTTPTooManyRedirects   = -1007,
  kCFURLErrorResourceUnavailable    = -1008,
  kCFURLErrorNotConnectedToInternet = -1009,
  kCFURLErrorRedirectToNonExistentLocation = -1010,
  kCFURLErrorBadServerResponse             = -1011,
  kCFURLErrorUserCancelledAuthentication   = -1012,
  kCFURLErrorUserAuthenticationRequired    = -1013,
  kCFURLErrorZeroByteResource        = -1014,
  kCFURLErrorCannotDecodeRawData     = -1015,
  kCFURLErrorCannotDecodeContentData = -1016,
  kCFURLErrorCannotParseResponse     = -1017,
  kCFURLErrorInternationalRoamingOff = -1018,
  kCFURLErrorCallIsActive               = -1019,
  kCFURLErrorDataNotAllowed             = -1020,
  kCFURLErrorRequestBodyStreamExhausted = -1021,
  kCFURLErrorFileDoesNotExist           = -1100,
  kCFURLErrorFileIsDirectory            = -1101,
  kCFURLErrorNoPermissionsToReadFile    = -1102,
  kCFURLErrorDataLengthExceedsMaximum   = -1103,

I have similar problems, in my case seem to be related to network connectivity:

Error Domain=NSURLErrorDomain Code=-1001 "The request timed out."

Things to check:

• Is there any chance that your server is not able to respond within some time limit? Like 60 seconds or 4 minutes?
• Is there a possibility that your device is switching networks (WiFi, 3G, VPN)?
• Could someone (client vs. server) be waiting for authentication?

Sorry, no ideas how to fix. Just debugging this, trying to find out what the problem is (-1021, -1001, -1009)

Update: Google search was very kind to find this:

• -1001 TimedOut - it took longer than the timeout which was alotted.
• -1003 CannotFindHost - the host could not be found.
• -1004 CannotConnectToHost - the host would not let us establish a connection.

see NSURLError.h Define

NSURLErrorUnknown =             -1,
NSURLErrorCancelled =           -999,
NSURLErrorBadURL =              -1000,
NSURLErrorTimedOut =            -1001,
NSURLErrorUnsupportedURL =          -1002,
NSURLErrorCannotFindHost =          -1003,
NSURLErrorCannotConnectToHost =         -1004,
NSURLErrorNetworkConnectionLost =       -1005,
NSURLErrorDNSLookupFailed =         -1006,
NSURLErrorHTTPTooManyRedirects =        -1007,
NSURLErrorResourceUnavailable =         -1008,
NSURLErrorNotConnectedToInternet =      -1009,
NSURLErrorRedirectToNonExistentLocation =   -1010,
NSURLErrorBadServerResponse =       -1011,
NSURLErrorUserCancelledAuthentication =     -1012,
NSURLErrorUserAuthenticationRequired =  -1013,
NSURLErrorZeroByteResource =        -1014,
NSURLErrorCannotDecodeRawData =             -1015,
NSURLErrorCannotDecodeContentData =         -1016,
NSURLErrorCannotParseResponse =             -1017,
NSURLErrorAppTransportSecurityRequiresSecureConnection NS_ENUM_AVAILABLE(10_11, 9_0) = -1022,
NSURLErrorFileDoesNotExist =        -1100,
NSURLErrorFileIsDirectory =         -1101,
NSURLErrorNoPermissionsToReadFile =     -1102,
NSURLErrorDataLengthExceedsMaximum NS_ENUM_AVAILABLE(10_5, 2_0) =   -1103,

// SSL errors
NSURLErrorSecureConnectionFailed =      -1200,
NSURLErrorServerCertificateHasBadDate =     -1201,
NSURLErrorServerCertificateUntrusted =  -1202,
NSURLErrorServerCertificateHasUnknownRoot = -1203,
NSURLErrorServerCertificateNotYetValid =    -1204,
NSURLErrorClientCertificateRejected =   -1205,
NSURLErrorClientCertificateRequired =   -1206,
NSURLErrorCannotLoadFromNetwork =       -2000,

// Download and file I/O errors
NSURLErrorCannotCreateFile =        -3000,
NSURLErrorCannotOpenFile =          -3001,
NSURLErrorCannotCloseFile =         -3002,
NSURLErrorCannotWriteToFile =       -3003,
NSURLErrorCannotRemoveFile =        -3004,
NSURLErrorCannotMoveFile =          -3005,
NSURLErrorDownloadDecodingFailedMidStream = -3006,
NSURLErrorDownloadDecodingFailedToComplete =-3007,

NSURLErrorInternationalRoamingOff NS_ENUM_AVAILABLE(10_7, 3_0) =         -1018,
NSURLErrorCallIsActive NS_ENUM_AVAILABLE(10_7, 3_0) =                    -1019,
NSURLErrorDataNotAllowed NS_ENUM_AVAILABLE(10_7, 3_0) =                  -1020,
NSURLErrorRequestBodyStreamExhausted NS_ENUM_AVAILABLE(10_7, 3_0) =      -1021,

NSURLErrorBackgroundSessionRequiresSharedContainer NS_ENUM_AVAILABLE(10_10, 8_0) = -995,
NSURLErrorBackgroundSessionInUseByAnotherProcess NS_ENUM_AVAILABLE(10_10, 8_0) = -996,
NSURLErrorBackgroundSessionWasDisconnected NS_ENUM_AVAILABLE(10_10, 8_0)= -997,