56.网络请求及各类错误代码含义总结(Errors Code)

在很多时候都会遇到错误, 还会带有一些 Error Code , 比如在各种网络请求, 文件操作, cookie 错误等各种错误的代码和错误代码对应的含义. 以下目录为 SOCKS4 Errors, SOCKS5 Errors, FTP Errors, HTTP Errors, CFURLConnection & CFURLProtocol Errors, File Errors, SSL Errors, Download and File I/O Errors, Cookie errors, CFNetServices Errors等各种类型错误代码。

一般使用 AFN中将 error 打印出来, 根据CFURLConnection & CFURLProtocol的 Errors code和  HTTP  status code.比如:Error Domain=com.alamofire.error.serialization.response Code=-1011 "Request failed: internal server error (500)" ,-1011为 error code, 500为 status code.

推荐一个 status code 查询的网址: List of HTTP status codes

Code	Description
-1 NSURLErrorUnknown
1 kCFHostErrorHostNotFound	“Indicates that the DNS lookup failed.”
2 kCFHostErrorUnknown	“An unknown error occurred (a name server failure, for example). For additional information, query the kCFGetAddrInfoFailureKey to get the value returned from getaddrinfo; lookup in netdb.h”
100 kCFSOCKSErrorUnknownClientVersion	“The SOCKS server rejected access because it does not support connections with the requested SOCKS version.Query kCFSOCKSStatusCodeKey to recover the status code returned by the server.”
101 kCFSOCKSErrorUnsupportedServerVersion	“The version of SOCKS requested by the server is not supported. Query kCFSOCKSStatusCodeKey to recover the status code returned by the server. Query the kCFSOCKSVersionKey to find the version requested by the server.”

SOCKS4 Errors

110 kCFSOCKS4ErrorRequestFailed	“Request rejected or failed by the server.”
111 kCFSOCKS4ErrorIdentdFailed	“Request rejected because SOCKS server cannot connect to identd on the client.”
112 kCFSOCKS4ErrorIdConflict	“Request rejected because the client program and identd report different user-ids.”
113 kCFSOCKS4ErrorUnknownStatusCode	“The status code returned by the server is unknown.”

SOCKS5 Errors

120 kCFSOCKS5ErrorBadState	“The stream is not in a state that allows the requested operation.”
121 kCFSOCKS5ErrorBadResponseAddr	“The address type returned is not supported.”
122 kCFSOCKS5ErrorBadCredentials	“The SOCKS server refused the client connection because of bad login credentials.”
123 kCFSOCKS5ErrorUnsupportedNegotiationMethod	“The requested method is not supported. Query kCFSOCKSNegotiationMethodKey to find the method requested.”
124 kCFSOCKS5ErrorNoAcceptableMethod	“The client and server could not find a mutually agreeable authentication method.”

FTP Errors

200 kCFFTPErrorUnexpectedStatusCode

“The server returned an unexpected status code. Query the kCFFTPStatusCodeKey to get the status code returned by the server”

HTTP Errors

300 kCFErrorHTTPAuthenticationTypeUnsupported	“The client and server could not agree on a supported authentication type.”
301 kCFErrorHTTPBadCredentials	“The credentials provided for an authenticated connection were rejected by the server.”
302 kCFErrorHTTPConnectionLost	“The connection to the server was dropped. This usually indicates a highly overloaded server.”
303 kCFErrorHTTPParseFailure	“The HTTP server response could not be parsed.”
304 kCFErrorHTTPRedirectionLoopDetected	“Too many HTTP redirects occurred before reaching a page that did not redirect the client to another page. This usually indicates a redirect loop.”
305 kCFErrorHTTPBadURL	“The requested URL could not be retrieved.”
306 kCFErrorHTTPProxyConnectionFailure	“A connection could not be established to the HTTP proxy.”
307 kCFErrorHTTPBadProxyCredentials	“The authentication credentials provided for logging into the proxy were rejected.”
308 kCFErrorPACFileError	“An error occurred with the proxy autoconfiguration file.”
309 kCFErrorPACFileAuth	“The authentication credentials provided by the proxy autoconfiguration file were rejected.”
310 kCFErrorHTTPSProxyConnectionFailure	“A connection could not be established to the HTTPS proxy.”
311 kCFStreamErrorHTTPSProxyFailureUnexpectedResponseToCONNECTMethod	“The HTTPS proxy returned an unexpected status code, such as a 3xx redirect.”

CFURLConnection & CFURLProtocol Errors

-998 kCFURLErrorUnknown	“An unknown error occurred.”
-999 kCFURLErrorCancelled NSURLErrorCancelled	“The connection was cancelled.”
-1000 kCFURLErrorBadURL NSURLErrorBadURL	“The connection failed due to a malformed URL.”
-1001 kCFURLErrorTimedOut NSURLErrorTimedOut	“The connection timed out.”
-1002 kCFURLErrorUnsupportedURL NSURLErrorUnsupportedURL	“The connection failed due to an unsupported URL scheme.”
-1003 kCFURLErrorCannotFindHost NSURLErrorCannotFindHost	“The connection failed because the host could not be found.”
-1004 kCFURLErrorCannotConnectToHost NSURLErrorCannotConnectToHost	“The connection failed because a connection cannot be made to the host.”
-1005 kCFURLErrorNetworkConnectionLost NSURLErrorNetworkConnectionLost	“The connection failed because the network connection was lost.”
-1006 kCFURLErrorDNSLookupFailed NSURLErrorDNSLookupFailed	“The connection failed because the DNS lookup failed.”
-1007 kCFURLErrorHTTPTooManyRedirects NSURLErrorHTTPTooManyRedirects	“The HTTP connection failed due to too many redirects.”
-1008 kCFURLErrorResourceUnavailable NSURLErrorResourceUnavailable	“The connection’s resource is unavailable.”
-1009 kCFURLErrorNotConnectedToInternet NSURLErrorNotConnectedToInternet	“The connection failed because the device is not connected to the internet.”
-1010 kCFURLErrorRedirectToNonExistentLocation NSURLErrorRedirectToNonExistentLocation	“The connection was redirected to a nonexistent location.”
-1011 kCFURLErrorBadServerResponse NSURLErrorBadServerResponse	“The connection received an invalid server response.”
-1012 kCFURLErrorUserCancelledAuthentication NSURLErrorUserCancelledAuthentication	“The connection failed because the user cancelled required authentication.”
-1013 kCFURLErrorUserAuthenticationRequired NSURLErrorUserAuthenticationRequired	“The connection failed because authentication is required.”
-1014 kCFURLErrorZeroByteResource NSURLErrorZeroByteResource	“The resource retrieved by the connection is zero bytes.”
-1015 kCFURLErrorCannotDecodeRawData NSURLErrorCannotDecodeRawData	“The connection cannot decode data encoded with a known content encoding.”
-1016 kCFURLErrorCannotDecodeContentData NSURLErrorCannotDecodeContentData	“The connection cannot decode data encoded with an unknown content encoding.”
-1017 kCFURLErrorCannotParseResponse NSURLErrorCannotParseResponse	“The connection cannot parse the server’s response.”
-1018 kCFURLErrorInternationalRoamingOff	“The connection failed because international roaming is disabled on the device.”
-1019 kCFURLErrorCallIsActive	“The connection failed because a call is active.”
-1020 kCFURLErrorDataNotAllowed	“The connection failed because data use is currently not allowed on the device.”
-1021 kCFURLErrorRequestBodyStreamExhausted	“The connection failed because its request’s body stream was exhausted.”

File Errors

-1100 kCFURLErrorFileDoesNotExist NSURLErrorFileDoesNotExist	“The file operation failed because the file does not exist.”
-1101 kCFURLErrorFileIsDirectory NSURLErrorFileIsDirectory	“The file operation failed because the file is a directory.”
-1102 kCFURLErrorNoPermissionsToReadFile NSURLErrorNoPermissionsToReadFile	“The file operation failed because it does not have permission to read the file.”
-1103 kCFURLErrorDataLengthExceedsMaximum NSURLErrorDataLengthExceedsMaximum	“The file operation failed because the file is too large.”

SSL Errors

-1200 kCFURLErrorSecureConnectionFailed NSURLErrorSecureConnectionFailed	“The secure connection failed for an unknown reason.”
-1201 kCFURLErrorServerCertificateHasBadDate NSURLErrorServerCertificateHasBadDate	“The secure connection failed because the server’s certificate has an invalid date.”
-1202 kCFURLErrorServerCertificateUntrusted NSURLErrorServerCertificateUntrusted	“The secure connection failed because the server’s certificate is not trusted.”
-1203 kCFURLErrorServerCertificateHasUnknownRoot NSURLErrorServerCertificateHasUnknownRoot	“The secure connection failed because the server’s certificate has an unknown root.”
-1204 kCFURLErrorServerCertificateNotYetValid NSURLErrorServerCertificateNotYetValid	“The secure connection failed because the server’s certificate is not yet valid.”
-1205 kCFURLErrorClientCertificateRejected NSURLErrorClientCertificateRejected	“The secure connection failed because the client’s certificate was rejected.”
-1206 kCFURLErrorClientCertificateRequired NSURLErrorClientCertificateRequired	“The secure connection failed because the server requires a client certificate.”

Download and File I/O Errors

-2000 kCFURLErrorCannotLoadFromNetwork NSURLErrorCannotLoadFromNetwork	“The connection failed because it is being required to return a cached resource, but one is not available.”
-3000 kCFURLErrorCannotCreateFile NSURLErrorCannotCreateFile	“The file cannot be created.”
-3001 kCFURLErrorCannotOpenFile NSURLErrorCannotOpenFile	“The file cannot be opened.”
-3002 kCFURLErrorCannotCloseFile NSURLErrorCannotCloseFile	“The file cannot be closed.”
-3003 kCFURLErrorCannotWriteToFile NSURLErrorCannotWriteToFile	“The file cannot be written.”
-3004 kCFURLErrorCannotRemoveFile NSURLErrorCannotRemoveFile	“The file cannot be removed.”
-3005 kCFURLErrorCannotMoveFile NSURLErrorCannotMoveFile	“The file cannot be moved.”
-3006 kCFURLErrorDownloadDecodingFailedMidStream NSURLErrorDownloadDecodingFailedMidStream	“The download failed because decoding of the downloaded data failed mid-stream.”
-3007 kCFURLErrorDownloadDecodingFailedToComplete NSURLErrorDownloadDecodingFailedToComplete	“The download failed because decoding of the downloaded data failed to complete.”

Cookie errors

-4000 kCFHTTPCookieCannotParseCookieFile

“The cookie file cannot be parsed.”

CFNetServices Errors

-72000L kCFNetServiceErrorUnknown	“An unknown error occurred.”
-72001L kCFNetServiceErrorCollision	“An attempt was made to use a name that is already in use.”
-72002L kCFNetServiceErrorNotFound	“Not used.”
-72003L kCFNetServiceErrorInProgress	“A new search could not be started because a search is already in progress.”
-72004L kCFNetServiceErrorBadArgument	“A required argument was not provided or was not valid.”
-72005L kCFNetServiceErrorCancel	“The search or service was cancelled.”
-72006L kCFNetServiceErrorInvalid	“Invalid data was passed to a CFNetServices function.”
-72007L kCFNetServiceErrorTimeout	“A search failed because it timed out.”
-73000L kCFNetServiceErrorDNSServiceFailure	“An error from DNS discovery; look at kCFDNSServiceFailureKey to get the error number and interpret using dnssd.h”