Timer by itself blocks nothing, while sleep could do that; Although I think AE should prevent that as bad practice. To return/simulate delayed response, try 

use AE;

my $app =  sub {
    return sub {
        my $r = shift;
        my $t; $t = AE::timer 60, 0, sub {
            my $writer = $r->([200, ['Content-Type' => 'text/plain'] ]
+);
            $writer->write('Hello World');
            $writer->close;
            undef $t;
        };
    };
};

[download]

Also, please note, that not all servers are AE-compatible, i.e. they could use own loop mechanism, and there will be a problem with AE; e.g. starman.

Another source of problem with fork: do not ever use any loop-related code in child (directly or indirectly), i.e. do system/exec ASAP.

WBR, basiliscos.

In reply to Re^3: AnyEvent code blocking Twiggy event loop by basiliscos
in thread AnyEvent code blocking Twiggy event loop by Anonymous Monk

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