From: Robert Klemme <shortcutter@...>
Date: 2012-02-03T21:13:11+09:00
Subject: Re: Choosing target network for UDP broadcast

On Fri, Feb 3, 2012 at 11:36 AM, Ivo Wever <wever@axini.com> wrote:
> If I send a UDP packet containing 'foo' like this:
>
>  socket = UDPSocket.new
>  socket.setsockopt(Socket::SOL_SOCKET, Socket::SO_BROADCAST, true)
>  socket.send('foo', 0, '<broadcast>', 40001)
>
> then wireshark tells me it gets sent from 192.168.x.y. However, my
> server is listening on localhost:40001. How can I choose the source
> address from which (and the interface via which) the socket will send
> its packet?

Hm, no UDP specialist here but can't you bind to the proper address
and then send the broadcast?

Kind regards

robert


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