Curl Status Code list (detail) _php tips

Curl Status Code List
Status code	Status Reason	Explain
0	Normal access
1	Wrong protocol.	Unsupported protocol. This version of Curl does not support this agreement.
2	Initialization of code failed	Initialization failed.
3	URL format is not correct	Bad URL format. The syntax is not correct.
4	Request protocol error
5	Unable to resolve agent	Unable to resolve agent. The given proxy host could not be resolved.
6	Unable to resolve host address	Unable to resolve host. The given remote host could not be resolved.
7	Unable to connect to host	Unable to connect to the host.
8	Remote server is not available	FTP is not a normal server response. CURL cannot resolve data sent by the server.
9	Access Resource Error	FTP access was denied. The server refused to log in or could not get the specific resource or directory you want. Most available What you can do is try to enter a directory that does not exist on this server.
11	FTP Password Error	FTP abnormal pass reply. CURL cannot parse the answer sent to the pass request.
13	Result error	FTP is not a normal PASV answer, CURL cannot resolve the reply sent to the PASV request.
14	FTP Response PASV Command	FTP is not in the normal 227 format. CURL could not resolve 227 rows sent by the server.
15	Internal failure	FTP cannot connect to the host. Unable to resolve host IP acquired in line 227.
17	Set transfer mode to binary	FTP cannot be set to binary transmission. The transmission mode cannot be changed to binary.
18	File transfer short or greater than expected	Part of the file. Only part of the file is transmitted.
19	RETR Command Transfer complete	FTP cannot download/access a given file, RETR (or similar) command failed.
21st	Command completed successfully	FTP quote error. The quote command returned an error from the server.
22	Back to Normal	HTTP could not find the Web page. The requested URL could not be found or another HTTP 400 or more error was returned. This return code only appears after using the-f/--fail option.
23	Data Write Failed	Write error. CURL cannot write data to local file systems or similar purposes.
25	Unable to start upload	FTP cannot stor files. The server rejected the Stor operation for FTP uploads.
26	Callback Error	Read error. Various types of reading problems.
27	Memory allocation request failed	There is not enough memory. The memory allocation request failed.
28	Access timeout	The operation timed out. The specified time-out period condition is reached.
30	FTP Port Error	FTP PORT failed. The PORT command failed. Not all FTP servers support the port command, please Try using Passive (PASV) transmissions instead!
31	FTP error	FTP cannot use the rest command. The REST command failed. The FTP transfer that this command uses to recover.
33	Request not supported	HTTP range error. Range "Command" does not work.
34	An internal error occurred	HTTP POST error. An internal POST request generated an error.
35	Ssl/tls Handshake failed	SSL connection error. The SSL handshake failed.
36	Download cannot be recovered	FTP continues to corrupt. Unable to continue the download that was aborted earlier.
37	File Permissions Error	The file could not be read. Unable to open file. Permission issues?
38	LDAP may not be binding	LDAP cannot bind. The LDAP bind (BIND) operation failed.
39	LDAP search failed	LDAP search failed.
41	Function not found	The feature could not be found. The necessary LDAP functionality could not be found.
42	Aborted callback	Terminated by the callback. The application informs curl that the operation is terminated.
43	Internal Error	Internal error. The function was invoked by an incorrect argument.
45	Interface error	Interface error. The specified outgoing interface is not available.
47	Too many redirects	Too many redirects. CURL has reached the maximum limit for following redirect settings
48	Unrecognized option	An unknown telnet option was specified.
49	Telnet format error	The inconsistent Telnet option.
51	SSL Certificate for Remote server	The peer SSL certificate or SSH MD5 fingerprint is not determined.
52	Server does not return content	The server has no answer, which is considered an error here.
53	Encryption engine not found	The SSL encryption engine could not be found.
54	Setting default SSL encryption failed	The SSL encryption engine cannot be set to default.
55	Unable to send network data	Failed to send network data.
56	Failure to receive network data	Failed while receiving network data.
57
58	Local client Certificate	There is a problem with the local certificate.
59	Unable to use password	The specified SSL password could not be used.
60	Credentials cannot be validated	The peer certificate could not be validated by a known CA certificate.
61	Unrecognized transfer encoding	Unrecognized transmission encoding.
62	Invalid LDAP URL	An invalid LDAP URL.
63	File exceeds maximum size	exceeds the maximum file size.
64	FTP failed	The requested FTP SSL level failed.
65	Rewind operation failed	The rollback volume (rewind) required to send this data failed.
66	SSL Engine failed	Initialization of the SSL engine failed.
67	Server refused to log on	The user name, password, or similar information was not accepted and the CURL login failed.
68	File not found	The file could not be found on the TFTP server.
69	No permissions	There is a problem with the TFTP server permissions.
70	Server disk space exceeded	The TFTP server is low on disk space.
71	Illegal TFTP operation	Illegal TFTP operation.
72	ID of unknown TFTP transfer	Unknown TFTP transfer number (ID).
73	File already exists	File already exists (TFTP).
74	Error TFTP server	No this user (TFTP).
75	Character conversion failed	Character conversion failed.
76	Callback must be logged	The character conversion function is required.
77	CA Certificate Permissions	There was a problem reading the SSL certificate (path?) Access rights? ) 。
78	Reference resource does not exist in URL	The resource referenced in the URL does not exist.
79	Error occurred in SSH session	An unknown error occurred during an SSH session.
80	Unable to turn off SSL connection	The SSL connection could not be turned off.
81	Service not ready
82	Unable to load CRL file	Cannot load CRL file, missing or malformed (added in version 7.19.0).
83	Publisher check failed	The issuance check failed (added in version 7.19.0).