From: Michael Mueller <mueller@...>
Date: 2004-08-09T16:16:20+09:00
Subject: Problem with exception not beeing caught

Dear rubyists!

I have a problem with a small programm, that's fetching emails from my
account and then goes to sleep for X seconds.
The code looks somehow like this:

loop do
  begin
    load FILTERFILE 
    BOXES.each{|box| check_mailbox(box)}
    $log.debug("Gehe f�r #{SLEEPTIME} Sekunden schlafen!")
    sleep(SLEEPTIME)
  rescue 
    $log.warn("Fehler aufgetreten:#{$!}\n#{$!.backtrace}")
  end
end

From time to time I get an exception in check_mailbox because the mailserver
doesn't respond so I'm gettin:
mi@ceres:~$ mail-forward.rb -n
/usr/local/lib/ruby/1.8/timeout.rb:42:in `new': execution expired
(Timeout::Error)
        from /usr/local/lib/ruby/1.8/net/protocol.rb:83:in `connect'
        from /usr/local/lib/ruby/1.8/net/protocol.rb:82:in `timeout'
        from /usr/local/lib/ruby/1.8/timeout.rb:55:in `timeout'
        from /usr/local/lib/ruby/1.8/net/protocol.rb:82:in `connect'
        from /usr/local/lib/ruby/1.8/net/protocol.rb:64:in `initialize'
        from /usr/local/lib/ruby/1.8/net/pop.rb:427:in `open'
        from /usr/local/lib/ruby/1.8/net/pop.rb:427:in `do_start'
        from /usr/local/lib/ruby/1.8/net/pop.rb:415:in `start'
        from /home/mi/bin/mail-forward.rb:45:in `check_mailbox'
        from /home/mi/bin/mail-forward.rb:89
        from /home/mi/bin/mail-forward.rb:89:in `each'
        from /home/mi/bin/mail-forward.rb:89
        from /home/mi/bin/mail-forward.rb:86:in `loop'
        from /home/mi/bin/mail-forward.rb:86

I guess that's kinda normal, but: Why isn't this exception caught???? I
expected the exception in my logfile and the program to continue, but
obviously the program exits before getting into the rescue block??

Any ideas what i'm doing wrong?

Michael