From: Tanaka Akira <akr@...17n.org>
Date: 2004-05-04T14:49:10+09:00
Subject: Re: UNIXSocket#send_io and #recv_io

In article <4095E404.8050808@hypermetrics.com>,
  Hal Fulton <hal9000@hypermetrics.com> writes:

>      have_struct_member: checking for struct msghdr.msg_control... 
> -------------------- yes

It seems that 4.4BSD or Linux.

I don't know why it doesn't work.  It works on Linux as follows.

% ruby-1.8.1 -v -rsocket -e '
p1, p2 = UNIXSocket.pair
pid = fork {
  w = p2.recv_io
  w.print "a"
}
r, w = IO.pipe
p1.send_io(w)
w.close
p1.close
p2.close
p r.gets
r.close
Process.wait pid
'
ruby 1.8.1 (2003-12-25) [i686-linux]
"a"

Note that ruby-1.8.0 had a bug.
-- 
Tanaka Akira