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NAME HTTP::Status - HTTP Status code processing VERSION version 6.36 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_PAYLOAD_TOO_LARGE (413) HTTP_URI_TOO_LONG (414) HTTP_UNSUPPORTED_MEDIA_TYPE (415) HTTP_RANGE_NOT_SATISFIABLE (416) HTTP_EXPECTATION_FAILED (417) HTTP_MISDIRECTED REQUEST (421) HTTP_UNPROCESSABLE_ENTITY (422) HTTP_LOCKED (423) HTTP_FAILED_DEPENDENCY (424) HTTP_TOO_EARLY (425) 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-code s.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.xh tml> 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 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.
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