From: Francis Cianfrocca <garbagecat10@...>
Date: 2006-09-06T12:37:21+09:00
Subject: Re: C socket to Ruby socket

On 9/5/06, Andre Nathan <andre@digirati.com.br> wrote:
> Hi!
>
> On Wed, 2006-09-06 at 01:17 +0900, Kent Sibilev wrote:
> > You probably can call Socket.for_fd using rb_funcall.
>
> I got it to work with an IO:
>
>   rb_funcall(rb_cIO, rb_intern("for_fd"), 1, INT2NUM(socket));
>
> However I can't seem to be able to make rb_cSocket visible to my
> extension. Any hints on how to do that?

You may find this unacceptably ugly, but how about:

char buf[100];
snprintf (buf, sizeof(buf)-1, "Socket.for_fd( %d )", socket);
rb_eval_string (buf);

There was some radio chatter on the core list a few months back about
the fact that rb_cSocket is not externed in ruby.h. As I recall the
omission is an oversight, not something fundamental. You could also
say

extern VALUE rb_cSocket;

in your extension. I've done that before.