about request route

Hi,

for this like request:
curl http://dns-api.org/AAAA/dns-api.org

in Dancer we could write:

get '/:type/:domain/?' => sub {

    my $rtype  = params->{ 'type' };
    my $domain = params->{ 'domain' };


But in a MP handler, how could we get the similiar result, treating
request path as GET/POST arguments?
thanks.