Re: UDP broadcasting all to but me
Re: UDP broadcasting all to but me
- Subject: Re: UDP broadcasting all to but me
- From: Joshua Graessley <email@hidden>
- Date: Wed, 3 Mar 2004 13:18:18 -0800
Multicast will give you a number of benefits. There is a socket option
(IP_MULTICAST_LOOP) to enable/disable receiving your own multicasts.
link-local multicasts can also be received by every device on the local
network regardless of subnet. In addition, there are socket options for
specifying which interface the multicast packet will be sent on.
Broadcasts can only be sent on Mac OS X as subnet broadcasts and you
can not control which interface the broadcast will be sent on. There
are some ways to work around some of the broadcast problems, but it's
much more difficult than switching to multicast.
-josh
On Mar 3, 2004, at 11:23 AM, Tomas Zahradnicky wrote:
>
Hi guys,
>
>
>
I'm programming a code that does UDP broadcasts. Since this is done
>
from a plug-in I need to set REUSEADDR and REUSEPORT socket options
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because there can be several simultaneous instances of the same code.
>
>
The problem is that everyone gets the broadcasted message (including
>
me). Is there a way how to broadcast to all but me? [i.e. some socket
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option or so.].
>
>
What would be the best way? Use multicast, do HW address filtering or
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there's something I missed?
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>
Thanks,
>
>
Tomas
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--
>
Ing. Tomas Zahradnicky, Jr.
>
Production Manager, 24U Software
>
Associate Member, Filemaker Solutions Alliance
>
mailto:email@hidden
>
http://www.24uSoftware.com
>
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