HTTP::Status(3) User Contributed Perl Documentation HTTP::Status(3)
NAME
HTTP::Status - HTTP Status code processing
VERSION
version 6.18
SYNOPSIS
use HTTP::Status qw(:constants :is status_message);
if ($rc != HTTP_OK) {
print status_message($rc), "\n";
}
if (is_success($rc)) { ... }
if (is_error($rc)) { ... }
if (is_redirect($rc)) { ... }
DESCRIPTION
HTTP::Status is a library of routines for defining and classifying HTTP
status codes for libwww-perl. Status codes are used to encode the
overall outcome of an HTTP response message. Codes correspond to those
defined in RFC 2616 and RFC 2518.
CONSTANTS
The following constant functions can be used as mnemonic status code
names. None of these are exported by default. Use the ":constants"
tag to import them all.
HTTP_CONTINUE (100)
HTTP_SWITCHING_PROTOCOLS (101)
HTTP_PROCESSING (102)
HTTP_EARLY_HINTS (103)
HTTP_OK (200)
HTTP_CREATED (201)
HTTP_ACCEPTED (202)
HTTP_NON_AUTHORITATIVE_INFORMATION (203)
HTTP_NO_CONTENT (204)
HTTP_RESET_CONTENT (205)
HTTP_PARTIAL_CONTENT (206)
HTTP_MULTI_STATUS (207)
HTTP_ALREADY_REPORTED (208)
HTTP_IM_USED (226)
HTTP_MULTIPLE_CHOICES (300)
HTTP_MOVED_PERMANENTLY (301)
HTTP_FOUND (302)
HTTP_SEE_OTHER (303)
HTTP_NOT_MODIFIED (304)
HTTP_USE_PROXY (305)
HTTP_TEMPORARY_REDIRECT (307)
HTTP_PERMANENT_REDIRECT (308)
HTTP_BAD_REQUEST (400)
HTTP_UNAUTHORIZED (401)
HTTP_PAYMENT_REQUIRED (402)
HTTP_FORBIDDEN (403)
HTTP_NOT_FOUND (404)
HTTP_METHOD_NOT_ALLOWED (405)
HTTP_NOT_ACCEPTABLE (406)
HTTP_PROXY_AUTHENTICATION_REQUIRED (407)
HTTP_REQUEST_TIMEOUT (408)
HTTP_CONFLICT (409)
HTTP_GONE (410)
HTTP_LENGTH_REQUIRED (411)
HTTP_PRECONDITION_FAILED (412)
HTTP_REQUEST_ENTITY_TOO_LARGE (413)
HTTP_REQUEST_URI_TOO_LARGE (414)
HTTP_UNSUPPORTED_MEDIA_TYPE (415)
HTTP_REQUEST_RANGE_NOT_SATISFIABLE (416)
HTTP_EXPECTATION_FAILED (417)
HTTP_MISDIRECTED REQUEST (421)
HTTP_UNPROCESSABLE_ENTITY (422)
HTTP_LOCKED (423)
HTTP_FAILED_DEPENDENCY (424)
HTTP_UPGRADE_REQUIRED (426)
HTTP_PRECONDITION_REQUIRED (428)
HTTP_TOO_MANY_REQUESTS (429)
HTTP_REQUEST_HEADER_FIELDS_TOO_LARGE (431)
HTTP_UNAVAILABLE_FOR_LEGAL_REASONS (451)
HTTP_INTERNAL_SERVER_ERROR (500)
HTTP_NOT_IMPLEMENTED (501)
HTTP_BAD_GATEWAY (502)
HTTP_SERVICE_UNAVAILABLE (503)
HTTP_GATEWAY_TIMEOUT (504)
HTTP_HTTP_VERSION_NOT_SUPPORTED (505)
HTTP_VARIANT_ALSO_NEGOTIATES (506)
HTTP_INSUFFICIENT_STORAGE (507)
HTTP_LOOP_DETECTED (508)
HTTP_NOT_EXTENDED (510)
HTTP_NETWORK_AUTHENTICATION_REQUIRED (511)
FUNCTIONS
The following additional functions are provided. Most of them are
exported by default. The ":is" import tag can be used to import all
the classification functions.
status_message( $code )
The status_message() function will translate status codes to human
readable strings. The string is the same as found in the constant
names above. If the $code is not registered in the list of IANA
HTTP Status Codes <https://www.iana.org/assignments/http-status-
codes/http-status-codes.xhtml> then "undef" is returned.
is_info( $code )
Return TRUE if $code is an Informational status code (1xx). This
class of status code indicates a provisional response which can't
have any content.
is_success( $code )
Return TRUE if $code is a Successful status code (2xx).
is_redirect( $code )
Return TRUE if $code is a Redirection status code (3xx). This class
of status code indicates that further action needs to be taken by
the user agent in order to fulfill the request.
is_error( $code )
Return TRUE if $code is an Error status code (4xx or 5xx). The
function returns TRUE for both client and server error status
codes.
is_client_error( $code )
Return TRUE if $code is a Client Error status code (4xx). This
class of status code is intended for cases in which the client
seems to have erred.
This function is not exported by default.
is_server_error( $code )
Return TRUE if $code is a Server Error status code (5xx). This
class of status codes is intended for cases in which the server is
aware that it has erred or is incapable of performing the request.
This function is not exported by default.
is_cacheable_by_default( $code )
Return TRUE if $code indicates that a response is cacheable by
default, and it can be reused by a cache with heuristic expiration.
All other status codes are not cacheable by default. See RFC 7231 -
HTTP/1.1 Semantics and Content, Section 6.1. Overview of Status
Codes <https://tools.ietf.org/html/rfc7231#section-6.1>;.
This function is not exported by default.
SEE ALSO
IANA HTTP Status Codes <https://www.iana.org/assignments/http-status-
codes/http-status-codes.xhtml>
BUGS
For legacy reasons all the "HTTP_" constants are exported by default
with the prefix "RC_". It's recommended to use explicit imports and
the ":constants" tag instead of relying on this.
AUTHOR
Gisle Aas <gisle AT activestate.com>
COPYRIGHT AND LICENSE
This software is copyright (c) 1994-2017 by Gisle Aas.
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
perl v5.26.3 2018-06-05 HTTP::Status(3)
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