From: Dave Thomas <Dave@...>
Date: 2000-12-31T07:58:50+09:00
Subject: [ruby-talk:8378] Re: New to Ruby

takaoueda@my-deja.com writes:

> For AF_INET, we must give port numbers and IP addresses in place of the
> file name.  Also, I think we must use something called struct sockaddr,
> which corresponds to GNU C's struct sockaddr_in in this case.  But
> how?

You have to construct a sockaddr_in. See Stevens Unix Network
Programming for details, but for AF_INET it contains a family, a post, 
and an IP address.

> Would anyone kindly supply correct ones?

Here's a trivial server

    require "socket"

    s = Socket.new(Socket::AF_INET, Socket::SOCK_STREAM, 0)
    n = Socket.gethostbyname("localhost")
    sa = [Socket::AF_INET, 3456, n[3], 0, 0].pack("snA4NN")
    s.bind(sa)
    s.listen(4)

    loop do
       a = s.accept
       p a
       a[0].close
    end