From: Tanaka Akira <akr@...17n.org>
Date: 2002-04-18T15:12:08+09:00
Subject: Re: resolv.rb Bug

In article <200204180556.g3I5uTM16177@sharui.nakada.kanuma.tochigi.jp>,
  nobu.nokada@softhome.net writes:

> I guess unused Sockets should be closed.

Since a DNS object uses a socket for all requests by multiplexing, the
patch causes the problem from second request as:

% ruby -rresolv -e '
dns = Resolv::DNS.new
dns.getresources("www.ruby-lang.org", Resolv::DNS::Resource::IN::A)
dns.getresources("ruby-lang.org", Resolv::DNS::Resource::IN::MX)'
/home/akr/src/ruby/lib/ruby/1.7/resolv.rb:514:in `close': closed stream (IOError)
        from /home/akr/src/ruby/lib/ruby/1.7/resolv.rb:514:in `close'
        from /home/akr/src/ruby/lib/ruby/1.7/resolv.rb:447:in `each_resource'
        from /home/akr/src/ruby/lib/ruby/1.7/resolv.rb:447:in `each'
        from /home/akr/src/ruby/lib/ruby/1.7/resolv.rb:447:in `each_resource'
        from /home/akr/src/ruby/lib/ruby/1.7/resolv.rb:416:in `getresources'
        from -e:4

It is a bug that DNS class have no `close' method, of course.
-- 
Tanaka Akira