Try printing $! after the call to can_read. select should set it.

Speaking of error checking,
$client->{socket} = IO::Socket::UNIX->new(...);
should be
$client->{socket} = IO::Socket::UNIX->new(...)
   or die("Unable to open socket: $!\n");

In reply to Re: Problems with IO::Select by ikegami
in thread Problems with IO::Select by dirtdart

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