NAME
Plack::Middleware::EmulateOPTIONS - handle OPTIONS requests as HEAD
VERSION
version v0.4.0
SYNOPSIS
use Plack::Builder;
builder {
enable "EmulateOPTIONS",
filter => sub {
my $env = shift;
return $env->{PATH_INFO} =~ m[^/static/];
};
...
};DESCRIPTION
This middleware adds support for handling HTTP OPTIONS requests, by internally rewriting them as HEAD requests.
If the requests succeed, then it will add Allow headers using the "callback" method.
If the requests do not succeed, then the responses are passed unchanged.
You can add the "filter" attribute to determine whether it will proxy HEAD requests.
ATTRIBUTES
filter
This is an optional code reference for a function that takes the PSGI environment and returns true or false as to whether the request should be proxied.
For instance, if you have CORS handler for a specific path, you might return false for those requests. Alternatively, you might use the "callback".
If you need a different value for the Allow headers, then you should handle the requests separately.
callback
This is an optional code reference that modifies the response headers.
By default, it sets the Allow header to "GET, HEAD, OPTIONS".
If you override this, then you will need to manually set the header yourself, for example:
use Plack::Util;
enable "EmulateOPTIONS",
callback => sub($res, $env) {
my @allowed = qw( GET HEAD OPTIONS );
if ( $env->{PATH_INFO} =~ m[^/api/] ) {
push @allowed, qw( POST PUT DELETE );
}
Plack::Util::header_set( $res->[1], 'allow', join(", ", @allowed) );
};This was added in v0.2.0.
SUPPORT FOR OLDER PERL VERSIONS
Since v0.4.0, the this module requires Perl v5.20 or later.
Future releases may only support Perl versions released in the last ten years.
SOURCE
The development version is on github at https://github.com/robrwo/Plack-Middleware-EmulateOPTIONS and may be cloned from git://github.com/robrwo/Plack-Middleware-EmulateOPTIONS.git
BUGS
Please report any bugs or feature requests on the bugtracker website https://github.com/robrwo/Plack-Middleware-EmulateOPTIONS/issues
When submitting a bug or request, please include a test-file or a patch to an existing test-file that illustrates the bug or desired feature.
AUTHOR
Robert Rothenberg <rrwo@cpan.org>
COPYRIGHT AND LICENSE
This software is Copyright (c) 2022-2024 by Robert Rothenberg.
This is free software, licensed under:
The Artistic License 2.0 (GPL Compatible)