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Man Pages


Manual Reference Pages  -  HTTP::STATUS (3)

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NAME

HTTP::Status - HTTP Status code processing

CONTENTS

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_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_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_I_AM_A_TEAPOT                   (418)
   HTTP_UNPROCESSABLE_ENTITY            (422)
   HTTP_LOCKED                          (423)
   HTTP_FAILED_DEPENDENCY               (424)
   HTTP_NO_CODE                         (425)
   HTTP_UPGRADE_REQUIRED                (426)
   HTTP_PRECONDITION_REQUIRED           (428)
   HTTP_TOO_MANY_REQUESTS               (429)
   HTTP_REQUEST_HEADER_FIELDS_TOO_LARGE (431)
   HTTP_RETRY_WITH                      (449)

   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_BANDWIDTH_LIMIT_EXCEEDED        (509)
   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 unknown, 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 <B>notB> 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 <B>notB> exported by default.

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.
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perl v5.20.3 HTTP::STATUS (3) 2015-09-09

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