If you willing to switch to AnyEvent, then AnyEvent::Handle allows you to set inactivity timeouts for reading and writing just as you want.

Also, calling delete on array values is deprecated. I'd suggest something like: 

@noreply = grep { $_ && $_->ttl >= $check_time } @noreply;

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In reply to Re^4: Timeout for timeout for an established connection by zwon
in thread Timeout for an established connection by 0day

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