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# Server
plackup -MYAML -e 'sub { warn Dump(+shift), $/; [ 200, [], [ "OHAI" ]]
+ }'
HTTP::Server::PSGI: Accepting connections at http://0:5000/

# Client
use 5.16.2;
...
        printf "%12s -> %s\n", $method, $uri->$method;
    }
}