perl 异步超时 打印错误

#!/usr/bin/perluse AnyEvent;use AnyEvent::HTTP;my $cv = AnyEvent->condvar;sub doit{    my $url = shift ;    return if not defined $url;    $cv->begin;    http_get( "$url",timeout => 20, sub { done( $url, @_ ) } );    print "1111111111111111\n";}sub done {    my ($url, $content, $hdr) = @_;    $cv->end();    print "Search: $url\tStatus: ", $hdr->{Status}, "\n";    if ($hdr->{Status}==200)             {             print "\$content is $content\n";             }elsif            ($hdr->{Status}==596){             print "time out\n";            }}&doit('http://120.55.118.6:3000/api/env?ip=192.168.32.101');    print "222222222222222222\n";    print "3333333333333333333\n";$cv->recv();~