perl working with Net::WebSocket::Server

client is connected to server on port 9000 example 192.168.2.100:9000?uuid=CLIENT1

on the server side how can i get the uuid out ? i can get ip and port, what about the url ?

on_connect => sub {
my ($serv, $conn) = @_;
$conn->on(
utf8 => sub {
my ($conn, $msg) = @_;
$IP = $conn->ip();
$PORT = $conn->port();