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This article will explain in detail what the CURL status codes are, and the editor thinks it is very practical, so I share it for you as a reference. I hope you can get something after reading this article.

List of CURL status codes

Status code

State reason

explain

0

Normal access

one

Wrong protocol

Unsupported protocol. This version of cURL does not support this protocol.

two

Initialization code failed

Initialization failed.

three

Incorrect URL format

The URL format is incorrect. The grammar is incorrect.

four

Request protocol error

five

Unable to resolve proxy

Unable to resolve proxy. Unable to resolve the given proxy host.

six

Unable to resolve host address

Unable to resolve host. Unable to resolve the given remote host.

seven

Unable to connect to the host

Unable to connect to the host.

eight

Remote server is not available

Abnormal server response from FTP. CURL cannot parse the data sent by the server.

nine

Error accessing resource

FTP access denied. The server refuses to log in or cannot get the specific resource or directory you want. The most promising

What is possible is that you try to enter a directory that does not exist on this server.

eleven

FTP password error

Abnormal PASS reply from FTP. CURL was unable to parse the reply sent to the PASS request.

thirteen

The result is wrong.

FTP abnormal PASV reply, cURL cannot parse the reply sent to the PASV request.

fourteen

FTP responds to PASV command

FTP's abnormal 227th format. CURL could not parse the 227th line sent by the server.

fifteen

Internal fault

FTP cannot connect to the host. The host IP obtained in line 227 could not be parsed.

seventeen

Set the transmission mode to binary

FTP cannot be set to binary transport. Cannot change the transmission mode to binary.

eighteen

File transfer is shorter or greater than expected

Part of the file. Only some of the files were transferred.

nineteen

RETR command transfer completed

FTP could not download / access the given file and the RETR (or similar) command failed.

twenty-one

Command completed successfully

FTP quote error. The quote command returns an error from the server.

twenty-two

Return to normal

HTTP could not find the web page. The requested URL could not be found or another HTTP 400 or above error was returned.

This return code appears only after the-f/--fail option is used.

twenty-three

Failed to write data

Write error. CURL cannot write data to the local file system or similar purpose.

twenty-five

Unable to start upload

FTP cannot STOR the file. The server rejected the STOR operation for FTP upload.

twenty-six

Callback error

Read it wrong. All kinds of reading problems.

twenty-seven

Memory allocation request failed

Out of memory. Memory allocation request failed.

twenty-eight

Access timeout

The operation timed out. The specified timeout condition is reached.

thirty

FTP port error

FTP PORT failed. The PORT command failed. Not all FTP servers support the PORT command, please

Try using passive (PASV) transport instead!

thirty-one

FTP error

FTP cannot use the REST command. The REST command failed. This command is used to restore the FTP transfer of.

thirty-three

Request is not supported

HTTP range error. The range Command does not work.

thirty-four

Internal error occurred

HTTP POST error. The internal POST request generated an error.

thirty-five

SSL/TLS handshake failed

SSL connection error. SSL handshake failed.

thirty-six

Download cannot be restored

FTP retransmission is damaged. Cannot continue the download that was aborted earlier.

thirty-seven

File permission error

The file cannot be read. Unable to open file. Access issues?

thirty-eight

LDAP is not binding.

LDAP cannot be bound. The LDAP bind (bind) operation failed.

thirty-nine

LDAP search failed

LDAP search failed.

forty-one

Function not found

Function cannot be found. Unable to find the necessary LDAP functionality.

forty-two

Aborted callback

Terminated by a callback. The application tells cURL to terminate the operation.

forty-three

Internal error

Internal error. The function was called by an incorrect parameter.

forty-five

Interface error

The interface is wrong. The specified outgoing interface cannot be used.

forty-seven

Too many redirects

Too many redirects. CURL has reached the maximum limit set for following redirection

forty-eight

Options are not recognized

Unknown TELNET option specified.

forty-nine

TELNET format error

Inappropriate telnet option.

fifty-one

SSL certificate of the remote server

The SSL certificate of peer or the MD5 fingerprint of SSH are not determined.

fifty-two

No content returned by the server

The server did not respond, which is considered an error here.

fifty-three

Encryption engine not found

Could not find the SSL encryption engine.

fifty-four

Failed to set default SSL encryption

Cannot set the SSL encryption engine as the default.

fifty-five

Unable to send network data

Failed to send network data.

fifty-six

Failure to receive network data

Failed to receive network data.

fifty-seven

fifty-eight

Local client certificate

There is a problem with the local certificate.

fifty-nine

Unable to use password

Cannot use the specified SSL password.

sixty

The credential cannot be verified

The peer certificate cannot be verified by a known CA certificate.

sixty-one

Unrecognized transmission code

Unrecognized transmission code.

sixty-two

Invalid LDAP URL

Invalid LDAP URL.

sixty-three

File exceeds maximum size

Exceeds the maximum file size.

sixty-four

FTP failed

The SSL level of the required FTP failed.

sixty-five

Rewind operation failed

Failed to send the required rollback (rewind) for this data.

sixty-six

SSL engine failed

Failed to initialize SSL engine.

sixty-seven

The server refused to log in

The user name, password, or similar information was not accepted and the cURL login failed.

sixty-eight

File not found

The file was not found on the TFTP server.

sixty-nine

No permission

There is a problem with the permissions of the TFTP server.

seventy

Out of server disk space

The TFTP server does not have enough disk space.

seventy-one

Illegal TFTP operation

Illegal TFTP operation.

seventy-two

ID of unknown TFTP transport

Unknown TFTP transfer number (ID).

seventy-three

The file already exists

The file already exists (TFTP).

seventy-four

Error TFTP server

There is no such user (TFTP).

seventy-five

Character conversion failed

Character conversion failed.

seventy-six

Callback must be recorded

Character conversion is required.

seventy-seven

CA certificate permissions

There is a problem reading the SSL certificate (path? Access? ).

seventy-eight

Reference resource does not exist in URL

The resource referenced in URL does not exist.

seventy-nine

The error occurred in the SSH session

An unknown error occurred during the SSH session.

eighty

Unable to close SSL connection

Failed to close the SSL connection.

eighty-one

Service not ready

eighty-two

Unable to load CRL file

Unable to load CRL file, missing or incorrectly formatted (added in version 7.19.0).

eighty-three

Failed to check the issuer

Signature check failed (added in version 7.19.0).

This is the end of this article on "what are the CURL status codes?". I hope the above content can be of some help to you, so that you can learn more knowledge. if you think the article is good, please share it for more people to see.

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