NAME

       Plack::Middleware::XSendfile - Sets X-Sendfile (or a like) header for frontends

SYNOPSIS

         enable "Plack::Middleware::XSendfile";

DESCRIPTION

       When the body is a blessed reference with a "path" method, then the return value of that
       method is used to set the X-Sendfile header.

       The body is set to an empty list, and the Content-Length header is set to 0.

       If the X-Sendfile header is already set, then the body and Content-Length will be
       untouched.

       You should use IO::File::WithPath or Plack::Util's "set_io_path" to add "path" method to
       an IO object in the body.

       See <http://github.com/rack/rack-contrib/blob/master/lib/rack/contrib/sendfile.rb> for the
       frontend configuration.

       Plack::Middleware::XSendfile does not set the Content-Type header.

CONFIGURATION

       variation
           The header tag to use. If unset, the environment key "plack.xsendfile.type" will be
           used, then the "HTTP_X_SENDFILE_TYPE" header.

           Supported values are:

           •   "X-Accel-Redirect"

           •   "X-Lighttpd-Send-File"

           •   "X-Sendfile".

           An unsupport value will log an error.

AUTHOR

       Tatsuhiko Miyagawa