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http://developer.apple.com/library/mac/#documentation/Cocoa/Reference/Foundation/Miscellaneous/Foundation_Constants/Reference/reference.html
NSError codes in the Cocoa error domain.
enum { NSFileNoSuchFileError = 4, NSFileLockingError = 255, NSFileReadUnknownError = 256, NSFileReadNoPermissionError = 257, NSFileReadInvalidFileNameError = 258, NSFileReadCorruptFileError = 259, NSFileReadNoSuchFileError = 260, NSFileReadInapplicableStringEncodingError = 261, NSFileReadUnsupportedSchemeError = 262, NSFileReadTooLargeError = 263, NSFileReadUnknownStringEncodingError = 264, NSFileWriteUnknownError = 512, NSFileWriteNoPermissionError = 513, NSFileWriteInvalidFileNameError = 514, NSFileWriteInapplicableStringEncodingError = 517, NSFileWriteUnsupportedSchemeError = 518, NSFileWriteOutOfSpaceError = 640, NSFileWriteVolumeReadOnlyError = 642m NSKeyValueValidationError = 1024, NSFormattingError = 2048, NSUserCancelledError = 3072, NSFileErrorMinimum = 0, NSFileErrorMaximum = 1023, NSValidationErrorMinimum = 1024, NSValidationErrorMaximum = 2047, NSFormattingErrorMinimum = 2048, NSFormattingErrorMaximum = 2559, NSPropertyListReadCorruptError = 3840, NSPropertyListReadUnknownVersionError = 3841, NSPropertyListReadStreamError = 3842, NSPropertyListWriteStreamError = 3851, NSPropertyListErrorMinimum = 3840, NSPropertyListErrorMaximum = 4095 NSExecutableErrorMinimum = 3584, NSExecutableNotLoadableError = 3584, NSExecutableArchitectureMismatchError = 3585, NSExecutableRuntimeMismatchError = 3586, NSExecutableLoadError = 3587, NSExecutableLinkError = 3588, NSExecutableErrorMaximum = 3839,
}
URL Loading System Error Codes
These values are returned as the error code property of an NSError object with the domain “NSURLErrorDomain”.
typedef enum
{ NSURLErrorUnknown = -1, NSURLErrorCancelled = -999, NSURLErrorBadURL = -1000, NSURLErrorTimedOut = -1001, NSURLErrorUnsupportedURL = -1002, NSURLErrorCannotFindHost = -1003, NSURLErrorCannotConnectToHost = -1004, NSURLErrorDataLengthExceedsMaximum = -1103, 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, NSURLErrorFileDoesNotExist = -1100, NSURLErrorFileIsDirectory = -1101, NSURLErrorNoPermissionsToReadFile = -1102, NSURLErrorSecureConnectionFailed = -1200, NSURLErrorServerCertificateHasBadDate = -1201, NSURLErrorServerCertificateUntrusted = -1202, NSURLErrorServerCertificateHasUnknownRoot = -1203, NSURLErrorServerCertificateNotYetValid = -1204, NSURLErrorClientCertificateRejected = -1205, NSURLErrorClientCertificateRequired = -1206, NSURLErrorCannotLoadFromNetwork = -2000, NSURLErrorCannotCreateFile = -3000, NSURLErrorCannotOpenFile = -3001, NSURLErrorCannotCloseFile = -3002, NSURLErrorCannotWriteToFile = -3003, NSURLErrorCannotRemoveFile = -3004, NSURLErrorCannotMoveFile = -3005, NSURLErrorDownloadDecodingFailedMidStream = -3006, NSURLErrorDownloadDecodingFailedToComplete = -3007
}
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原文地址：http://my.oschina.net/u/1782374/blog/401639
