Read-Only

Informs the last transaction's error code as a number, according to the following values:

•0: OK

•1: UNSUPPORTED_PROTOCOL

•2: FAILED_INIT

•3: URL_MALFORMAT

•5: COULDNT_RESOLVE_PROXY

•6: COULDNT_RESOLVE_HOST

•7: COULDNT_CONNECT

•8: FTP_WEIRD_SERVER_REPLY

•9: REMOTE_ACCESS_DENIED (does not mean a login failure)

•11: FTP_WEIRD_PASS_REPLY

•13: FTP_WEIRD_PASV_REPLY

•14: FTP_WEIRD_227_FORMAT

•15: FTP_CANT_GET_HOST

•17: FTP_COULDNT_SET_TYPE

•18: PARTIAL_FILE

•19: FTP_COULDNT_RETR_FILE

•21: QUOTE_ERROR (failure when using the QUOTE command)

•22: HTTP_RETURNED_ERROR

•23: WRITE_ERROR

•25: UPLOAD_FAILED (failure when using the UPLOAD command)

•26: READ_ERROR (cannot open or read the file)

•27: OUT_OF_MEMORY

•28: OPERATION_TIMEDOUT (time-out reached)

•30: FTP_PORT_FAILED (failure when using the FTP PORT operation)

•31: FTP_COULDNT_USE_REST (failure when using the REST command)

•33: RANGE_ERROR (failure when using the RANGE command)

•34: HTTP_POST_ERROR

•35: SSL_CONNECT_ERROR (error when connecting using SSL)

•36: BAD_DOWNLOAD_RESUME (cannot restart download)

•37: FILE_COULDNT_READ_FILE

•38: LDAP_CANNOT_BIND

•39: LDAP_SEARCH_FAILED

•41: FUNCTION_NOT_FOUND

•42: ABORTED_BY_CALLBACK

•43: BAD_FUNCTION_ARGUMENT

•45: INTERFACE_FAILED (failure in CURLOPT_INTERFACE)

•47: TOO_MANY_REDIRECTS (error in endless redirection loops)

•48: UNKNOWN_TELNET_OPTION (user specified an unknown option)

•49: TELNET_OPTION_SYNTAX (malformed TELNET option)

•51: PEER_FAILED_VERIFICATION (invalid certificate)

•52: GOT_NOTHING

•53: SSL_ENGINE_NOTFOUND (SSL engine not found)

•54: SSL_ENGINE_SETFAILED (SSL engine cannot be configured as default)

•55: SEND_ERROR (failure when sending network data)

•56: RECV_ERROR (failure when receiving network data)

•57: OBSOLETE57 (not used)

•58: SSL_CERTPROBLEM (problem with local certificate)

•59: SSL_CIPHER (cannot use specified cipher)

•60: SSL_CACERT (problem with CA certificate)

•61: BAD_CONTENT_ENCODING (unrecognized transfer encoding)

•62: LDAP_INVALID_URL (invalid LDAP URL)

•63: FILESIZE_EXCEEDED (maximum file size exceeded)

•64: USE_SSL_FAILED (failure on requested FTP SSL level)

•65: SEND_FAIL_REWIND (sending data requires a rewind operation that failed)

•66: SSL_ENGINE_INITFAILED (failure when initializing SSL engine)

•67: LOGIN_DENIED (user and password not accepted and login failed)

•68: TFTP_NOTFOUND (file not found on the server)

•69: TFTP_PERM (permission problem on the server)

•70: REMOTE_DISK_FULL (disk is full on the server)

•71: TFTP_ILLEGAL (illegal TFTP operation)

•72: TFTP_UNKNOWNID (unknown transfer ID)

•73: REMOTE_FILE_EXISTS (file already exists)

•74: TFTP_NOSUCHUSER (user not found)

•75: CONV_FAILED (failure on conversion)

•76: CONV_REQD (user must register conversion callbacks using the curl_easy_setopt options CURLOPT_CONV_FROM_NETWORK_FUNCTION, CURLOPT_CONV_TO_NETWORK_FUNCTION, and CURLOPT_CONV_FROM_UTF8_FUNCTION)

•77: SSL_CACERT_BADFILE (cannot load CACERT file, this file does not exist, or its format is wrong)

•78: REMOTE_FILE_NOT_FOUND (remote file not found)

•79: SSH (error on SSH layer)

•80: SSL_SHUTDOWN_FAILED (failure when finishing SSL connection)

•81: AGAIN (socket is not ready for SEND or RECV commands, please wait and try again)

•82: SSL_CRL_BADFILE

•83: SSL_ISSUER_ERROR