From: Brian Candler <B.Candler@...>
Date: 2007-03-14T05:59:55+09:00
Subject: Re: Bi-directional pipe?

On Wed, Mar 14, 2007 at 05:29:16AM +0900, Rob Biedenharn wrote:
> On Mar 13, 2007, at 4:15 PM, Brian Candler wrote:
> >Is there any standard Ruby way of creating a bidirectional pipe or
> >socketpair?
> >
> >I want to pass a single IO-like object around, but to be able to  
> >both read
> >and write from the other end. (What I'm actually trying to do is to  
> >put a
> >facade around Net::SSH so that the command channel can be passed in  
> >as a
> >proxy to Net::Telnet, but I can think of other uses of this)
> >
> >IO.popen(..., "w+") does make such a bidirectional pipe, but as far  
> >as I can
> >see only for communicating with a child process.
> >
> >Any ideas?
> >
> >Thanks,
> >
> >Brian.
> 
> rd, wr = IO.pipe
> 
> comes to mind.

That's a *unidirectional* pipe. At least, all the rdoc stuff says that one
end is a reader and the other end is a writer.