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.IX Title "Plack::Middleware::ConditionalGET 3pm"
.TH Plack::Middleware::ConditionalGET 3pm 2024-01-20 "perl v5.38.2" "User Contributed Perl Documentation"
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.SH NAME
Plack::Middleware::ConditionalGET \- Middleware to enable conditional GET
.SH SYNOPSIS
.IX Header "SYNOPSIS"
.Vb 4
\&  builder {
\&      enable "ConditionalGET";
\&      ....
\&  };
.Ve
.SH DESCRIPTION
.IX Header "DESCRIPTION"
This middleware enables conditional GET and HEAD using
\&\f(CW\*(C`If\-None\-Match\*(C'\fR and \f(CW\*(C`If\-Modified\-Since\*(C'\fR header. The application
should set either or both of \f(CW\*(C`Last\-Modified\*(C'\fR or \f(CW\*(C`ETag\*(C'\fR response
headers per RFC 2616. When either of the conditions is met, the
response body is set to be zero length and the status is set to 304
Not Modified.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
Rack::ConditionalGet