From: Brian Candler <B.Candler@...>
Date: 2005-07-17T19:41:17+09:00
Subject: Re: Nonblocking Sockets

On Sun, Jul 17, 2005 at 07:01:54AM +0900, Bill Kelly wrote:
> From: "James Edward Gray II" <james@grayproductions.net>
> >
> > Is this the "standard" way to make a nonblocking Socket in Ruby?
> > 
> > require "socket"
> > require "fcntl"
> > 
> > server = TCPServer.new(...)
> > server.fcntl(Fcntl::F_SETFL, Fcntl::O_NONBLOCK)
> > 
> > __END__
> > 
> > Will that work on Unix and Windows?
> 
> As far as I know it's the "standard" way (but that
> just means it's the only way I know of. :)
> 
> It doesn't work on Windows.  :(
> 
> I've ended up tacking on: ... if defined? Fcntl::O_NONBLOCK
> onto the fcntl() line so that my scripts still run on
> windows, even though they may block inappropriately.
> 
> Blocking I/O issues have been a thorny issue for me in
> trying to write cross-platform network applications in
> Ruby.

Aside: would it be appropriate to use Ruby threads in your application? It
can hide a lot of socket blocking nastiness. And I presume the interpreter
copes with Windows.

Regards,

Brian.