CFNetworkErrors错误码见下面的定义
/*!
@enum NSURL-related Error Codes
@abstract Constants used by NSError to indicate errors in the WebFoundation domain
@discussion Documentation on each constant forthcoming.
*/
enum
{
NSURLErrorUnknown = -1,
NSURLErrorCancelled = kCFURLErrorCancelled,
NSURLErrorBadURL = kCFURLErrorBadURL,
NSURLErrorTimedOut = kCFURLErrorTimedOut,
NSURLErrorUnsupportedURL = kCFURLErrorUnsupportedURL,
NSURLErrorCannotFindHost = kCFURLErrorCannotFindHost,
NSURLErrorCannotConnectToHost = kCFURLErrorCannotConnectToHost,
NSURLErrorNetworkConnectionLost = kCFURLErrorNetworkConnectionLost,
NSURLErrorDNSLookupFailed = kCFURLErrorDNSLookupFailed,
NSURLErrorHTTPTooManyRedirects = kCFURLErrorHTTPTooManyRedirects,
NSURLErrorResourceUnavailable = kCFURLErrorResourceUnavailable,
NSURLErrorNotConnectedToInternet = kCFURLErrorNotConnectedToInternet,
NSURLErrorRedirectToNonExistentLocation = kCFURLErrorRedirectToNonExistentLocation,
NSURLErrorBadServerResponse = kCFURLErrorBadServerResponse,
NSURLErrorUserCancelledAuthentication = kCFURLErrorUserCancelledAuthentication,
NSURLErrorUserAuthenticationRequired = kCFURLErrorUserAuthenticationRequired,
NSURLErrorZeroByteResource = kCFURLErrorZeroByteResource,
NSURLErrorCannotDecodeRawData = kCFURLErrorCannotDecodeRawData,
NSURLErrorCannotDecodeContentData = kCFURLErrorCannotDecodeContentData,
NSURLErrorCannotParseResponse = kCFURLErrorCannotParseResponse,
NSURLErrorFileDoesNotExist = kCFURLErrorFileDoesNotExist,
NSURLErrorFileIsDirectory = kCFURLErrorFileIsDirectory,
NSURLErrorNoPermissionsToReadFile = kCFURLErrorNoPermissionsToReadFile,
NSURLErrorDataLengthExceedsMaximum NS_ENUM_AVAILABLE(10_5,2_0) =kCFURLErrorDataLengthExceedsMaximum,
// SSL errors
NSURLErrorSecureConnectionFailed = kCFURLErrorSecureConnectionFailed,
NSURLErrorServerCertificateHasBadDate = kCFURLErrorServerCertificateHasBadDate,
NSURLErrorServerCertificateUntrusted = kCFURLErrorServerCertificateUntrusted,
NSURLErrorServerCertificateHasUnknownRoot = kCFURLErrorServerCertificateHasUnknownRoot,
NSURLErrorServerCertificateNotYetValid = kCFURLErrorServerCertificateNotYetValid,
NSURLErrorClientCertificateRejected = kCFURLErrorClientCertificateRejected,
NSURLErrorClientCertificateRequired = kCFURLErrorClientCertificateRequired,
NSURLErrorCannotLoadFromNetwork = kCFURLErrorCannotLoadFromNetwork,
// Download and file I/O errors
NSURLErrorCannotCreateFile = kCFURLErrorCannotCreateFile,
NSURLErrorCannotOpenFile = kCFURLErrorCannotOpenFile,
NSURLErrorCannotCloseFile = kCFURLErrorCannotCloseFile,
NSURLErrorCannotWriteToFile = kCFURLErrorCannotWriteToFile,
NSURLErrorCannotRemoveFile = kCFURLErrorCannotRemoveFile,
NSURLErrorCannotMoveFile = kCFURLErrorCannotMoveFile,
NSURLErrorDownloadDecodingFailedMidStream = kCFURLErrorDownloadDecodingFailedMidStream,
NSURLErrorDownloadDecodingFailedToComplete =kCFURLErrorDownloadDecodingFailedToComplete,
NSURLErrorInternationalRoamingOff NS_ENUM_AVAILABLE(10_7,3_0) = kCFURLErrorInternationalRoamingOff,
NSURLErrorCallIsActive NS_ENUM_AVAILABLE(10_7,3_0) = kCFURLErrorCallIsActive,
NSURLErrorDataNotAllowed NS_ENUM_AVAILABLE(10_7,3_0) = kCFURLErrorDataNotAllowed,
NSURLErrorRequestBodyStreamExhausted NS_ENUM_AVAILABLE(10_7,3_0) = kCFURLErrorRequestBodyStreamExhausted,
NSURLErrorBackgroundSessionRequiresSharedContainerNS_ENUM_AVAILABLE(10_10,8_0) = -995,
NSURLErrorBackgroundSessionInUseByAnotherProcessNS_ENUM_AVAILABLE(10_10,8_0) = -996,
NSURLErrorBackgroundSessionWasDisconnected NS_ENUM_AVAILABLE(10_10,8_0)= -997,
};
/*
* CFNetworkErrors
*
* Discussion:
* The list of all public error codes returned under the error domain
* kCFErrorDomainCFNetwork
*/
typedef CF_ENUM(int, CFNetworkErrors) {
kCFHostErrorHostNotFound = 1,
kCFHostErrorUnknown = 2,// Query the kCFGetAddrInfoFailureKey to get the value returned from getaddrinfo; lookup in netdb.h
// SOCKS errors; in all cases you may query kCFSOCKSStatusCodeKey to recover the status code returned by the server
kCFSOCKSErrorUnknownClientVersion = 100,
kCFSOCKSErrorUnsupportedServerVersion = 101,// Query the kCFSOCKSVersionKey to find the version requested by the server
// SOCKS4-specific errors
kCFSOCKS4ErrorRequestFailed = 110, // request rejected or failed by the server
kCFSOCKS4ErrorIdentdFailed = 111, // request rejected because SOCKS server cannot connect to identd on the client
kCFSOCKS4ErrorIdConflict = 112, // request rejected because the client program and identd report different user-ids
kCFSOCKS4ErrorUnknownStatusCode = 113,
// SOCKS5-specific errors
kCFSOCKS5ErrorBadState = 120,
kCFSOCKS5ErrorBadResponseAddr = 121,
kCFSOCKS5ErrorBadCredentials = 122,
kCFSOCKS5ErrorUnsupportedNegotiationMethod = 123, // query kCFSOCKSNegotiationMethodKey to find the method requested
kCFSOCKS5ErrorNoAcceptableMethod = 124,
// FTP errors; query the kCFFTPStatusCodeKey to get the status code returned by the server
kCFFTPErrorUnexpectedStatusCode = 200,
// HTTP errors
kCFErrorHTTPAuthenticationTypeUnsupported = 300,
kCFErrorHTTPBadCredentials = 301,
kCFErrorHTTPConnectionLost = 302,
kCFErrorHTTPParseFailure = 303,
kCFErrorHTTPRedirectionLoopDetected = 304,
kCFErrorHTTPBadURL = 305,
kCFErrorHTTPProxyConnectionFailure = 306,
kCFErrorHTTPBadProxyCredentials = 307,
kCFErrorPACFileError = 308,
kCFErrorPACFileAuth = 309,
kCFErrorHTTPSProxyConnectionFailure = 310,
kCFStreamErrorHTTPSProxyFailureUnexpectedResponseToCONNECTMethod =311,
// Error codes for CFURLConnection and CFURLProtocol
kCFURLErrorBackgroundSessionInUseByAnotherProcess = -996,
kCFURLErrorBackgroundSessionWasDisconnected = -997,
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,
// SSL errors
kCFURLErrorSecureConnectionFailed = -1200,
kCFURLErrorServerCertificateHasBadDate = -1201,
kCFURLErrorServerCertificateUntrusted = -1202,
kCFURLErrorServerCertificateHasUnknownRoot = -1203,
kCFURLErrorServerCertificateNotYetValid = -1204,
kCFURLErrorClientCertificateRejected = -1205,
kCFURLErrorClientCertificateRequired = -1206,
kCFURLErrorCannotLoadFromNetwork = -2000,
// Download and file I/O errors
kCFURLErrorCannotCreateFile = -3000,
kCFURLErrorCannotOpenFile = -3001,
kCFURLErrorCannotCloseFile = -3002,
kCFURLErrorCannotWriteToFile = -3003,
kCFURLErrorCannotRemoveFile = -3004,
kCFURLErrorCannotMoveFile = -3005,
kCFURLErrorDownloadDecodingFailedMidStream = -3006,
kCFURLErrorDownloadDecodingFailedToComplete = -3007,
// Cookie errors
kCFHTTPCookieCannotParseCookieFile = -4000,
// Errors originating from CFNetServices
kCFNetServiceErrorUnknown = -72000L,
kCFNetServiceErrorCollision = -72001L,
kCFNetServiceErrorNotFound = -72002L,
kCFNetServiceErrorInProgress = -72003L,
kCFNetServiceErrorBadArgument = -72004L,
kCFNetServiceErrorCancel = -72005L,
kCFNetServiceErrorInvalid = -72006L,
kCFNetServiceErrorTimeout = -72007L,
kCFNetServiceErrorDNSServiceFailure = -73000L// An error from DNS discovery; look at kCFDNSServiceFailureKey to get the error number and interpret using dns_sd.h
};
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