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Re: [core] WGA of draft-dijk-core-groupcomm-bis-03

Achim Kraus <achimkraus@gmx.net> Fri, 20 March 2020 19:00 UTC

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To: Carsten Bormann <cabo@tzi.org>
Cc: "core@ietf.org" <core@ietf.org>
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From: Achim Kraus <achimkraus@gmx.net>
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Date: Fri, 20 Mar 2020 19:59:46 +0100
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Subject: Re: [core] WGA of draft-dijk-core-groupcomm-bis-03
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Hi Carsten,

let me first also thank you very much for your work over the past 10
years (and now even 10 more days ;-) )!

 > A workaround for less capable platforms has always been to open
multiple sockets, one for each address.  Would that work here, too?

To distinguish between multicast groups, yes (with some of the downsides
mentioned in the draft).

To distinguish between multicast and uni-cast, I can't see, that this is
working.

One of my impression working with java-multicast is, that it depends a
little more on the OS implementations. Therefore an option seems for me
to be the easier approach. Anyway, lets see, if other implementations
have also their trouble implementing it.

best regards
Achim

Am 20.03.20 um 10:48 schrieb Carsten Bormann:
> On 2020-03-20, at 09:36, Achim Kraus <achimkraus@gmx.net> wrote:
>>
>> At least for java, we (Eclipse Californium) didn't find a way for the
>> server-side, to determine, for which multicast group the message was
>> received.
>
> A workaround for less capable platforms has always been to open multiple sockets, one for each address.  Would that work here, too?
>
> Grüße, Carsten
>

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