Streaming connection

Greetings,

I am using a UserAgent with a callback to handle a streaming connection.  How does one terminate the connection client-side ?  How do you close the connection other than exiting the program ?

my $browser = LWP::UserAgent->new();

$response = $browser->get($surl, ':content_cb' => \&read_stream);

sub read_stream {...}

Thanks,

Sylvain