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.\" ========================================================================
.\"
.IX Title "HTTP::Status 3"
.TH HTTP::Status 3 "2003-10-23" "perl v5.16.3" "User Contributed Perl Documentation"
.\" For nroff, turn off justification. Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
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.SH "NAME"
HTTP::Status \- HTTP Status code processing
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\& use HTTP::Status;
\&
\& if ($rc != RC_OK) {
\& print status_message($rc), "\en";
\& }
\&
\& if (is_success($rc)) { ... }
\& if (is_error($rc)) { ... }
\& if (is_redirect($rc)) { ... }
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
\&\fIHTTP::Status\fR is a library of routines for defining and
classifying \s-1HTTP\s0 status codes for libwww-perl. Status codes are
used to encode the overall outcome of a \s-1HTTP\s0 response message. Codes
correspond to those defined in \s-1RFC\s0 2616 and \s-1RFC\s0 2518.
.SH "CONSTANTS"
.IX Header "CONSTANTS"
The following constant functions can be used as mnemonic status code
names:
.PP
.Vb 3
\& RC_CONTINUE (100)
\& RC_SWITCHING_PROTOCOLS (101)
\& RC_PROCESSING (102)
\&
\& RC_OK (200)
\& RC_CREATED (201)
\& RC_ACCEPTED (202)
\& RC_NON_AUTHORITATIVE_INFORMATION (203)
\& RC_NO_CONTENT (204)
\& RC_RESET_CONTENT (205)
\& RC_PARTIAL_CONTENT (206)
\& RC_MULTI_STATUS (207)
\&
\& RC_MULTIPLE_CHOICES (300)
\& RC_MOVED_PERMANENTLY (301)
\& RC_FOUND (302)
\& RC_SEE_OTHER (303)
\& RC_NOT_MODIFIED (304)
\& RC_USE_PROXY (305)
\& RC_TEMPORARY_REDIRECT (307)
\&
\& RC_BAD_REQUEST (400)
\& RC_UNAUTHORIZED (401)
\& RC_PAYMENT_REQUIRED (402)
\& RC_FORBIDDEN (403)
\& RC_NOT_FOUND (404)
\& RC_METHOD_NOT_ALLOWED (405)
\& RC_NOT_ACCEPTABLE (406)
\& RC_PROXY_AUTHENTICATION_REQUIRED (407)
\& RC_REQUEST_TIMEOUT (408)
\& RC_CONFLICT (409)
\& RC_GONE (410)
\& RC_LENGTH_REQUIRED (411)
\& RC_PRECONDITION_FAILED (412)
\& RC_REQUEST_ENTITY_TOO_LARGE (413)
\& RC_REQUEST_URI_TOO_LARGE (414)
\& RC_UNSUPPORTED_MEDIA_TYPE (415)
\& RC_REQUEST_RANGE_NOT_SATISFIABLE (416)
\& RC_EXPECTATION_FAILED (417)
\& RC_UNPROCESSABLE_ENTITY (422)
\& RC_LOCKED (423)
\& RC_FAILED_DEPENDENCY (424)
\&
\& RC_INTERNAL_SERVER_ERROR (500)
\& RC_NOT_IMPLEMENTED (501)
\& RC_BAD_GATEWAY (502)
\& RC_SERVICE_UNAVAILABLE (503)
\& RC_GATEWAY_TIMEOUT (504)
\& RC_HTTP_VERSION_NOT_SUPPORTED (505)
\& RC_INSUFFICIENT_STORAGE (507)
.Ve
.SH "FUNCTIONS"
.IX Header "FUNCTIONS"
The following additional functions are provided. Most of them are
exported by default.
.ie n .IP "status_message( $code )" 4
.el .IP "status_message( \f(CW$code\fR )" 4
.IX Item "status_message( $code )"
The \fIstatus_message()\fR function will translate status codes to human
readable strings. The string is the same as found in the constant
names above. If the \f(CW$code\fR is unknown, then \f(CW\*(C`undef\*(C'\fR is returned.
.ie n .IP "is_info( $code )" 4
.el .IP "is_info( \f(CW$code\fR )" 4
.IX Item "is_info( $code )"
Return \s-1TRUE\s0 if \f(CW$code\fR is an \fIInformational\fR status code. This
class of status code indicates a provisional response which can't have
any content.
.ie n .IP "is_success( $code )" 4
.el .IP "is_success( \f(CW$code\fR )" 4
.IX Item "is_success( $code )"
Return \s-1TRUE\s0 if \f(CW$code\fR is a \fISuccessful\fR status code.
.ie n .IP "is_redirect( $code )" 4
.el .IP "is_redirect( \f(CW$code\fR )" 4
.IX Item "is_redirect( $code )"
Return \s-1TRUE\s0 if \f(CW$code\fR is a \fIRedirection\fR status code. This class of
status code indicates that further action needs to be taken by the
user agent in order to fulfill the request.
.ie n .IP "is_error( $code )" 4
.el .IP "is_error( \f(CW$code\fR )" 4
.IX Item "is_error( $code )"
Return \s-1TRUE\s0 if \f(CW$code\fR is an \fIError\fR status code. The function
return \s-1TRUE\s0 for both client error or a server error status codes.
.ie n .IP "is_client_error( $code )" 4
.el .IP "is_client_error( \f(CW$code\fR )" 4
.IX Item "is_client_error( $code )"
Return \s-1TRUE\s0 if \f(CW$code\fR is an \fIClient Error\fR status code. This class
of status code is intended for cases in which the client seems to have
erred.
.Sp
This function is \fBnot\fR exported by default.
.ie n .IP "is_server_error( $code )" 4
.el .IP "is_server_error( \f(CW$code\fR )" 4
.IX Item "is_server_error( $code )"
Return \s-1TRUE\s0 if \f(CW$code\fR is an \fIServer Error\fR status code. 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.
.Sp
This function is \fBnot\fR exported by default.
.SH "BUGS"
.IX Header "BUGS"
Wished \f(CW@EXPORT_OK\fR had been used instead of \f(CW@EXPORT\fR in the beginning.
Now too much is exported by default.
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