It almost makes sense. select is supposed to tell you when a call won't block. Having the write fail instead of blocking, it makes sense that select needs to return (otherwise the select would just hang forever if you didn't give a timeout).

Reading the IO::Socket module, I was bit surprised that waiting for more than one condition type isn't easier. But anyway, I'd do this:

    my $canWrite= IO::Select->new( $sock );
    my $hasError= IO::Select->new( $sock );
    my( $aWrite, $aError )=
      IO::Select->select( undef, $canWrite, $hasError );
    for(  @$aError  ) {
        warn "Error on socket ($_).\n";
    }
    for(  @$aWrite  ) {
        if(  print $_ $message  ) {
            print "message sent.\n";
        } else {
            warn "Can't write to socket ($_): $!\n";
        }
    }

[download]
and see what happens. Then you have the error loop do recovery based on what behavior you see, etc.

In reply to Re: Stupid IO::select question by tye
in thread Stupid IO::select question by BlaisePascal

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