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Re: [Webpush] Message update PR

Brian Raymor <Brian.Raymor@microsoft.com> Sat, 09 January 2016 01:11 UTC

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From: Brian Raymor <Brian.Raymor@microsoft.com>
To: Martin Thomson <martin.thomson@gmail.com>, "webpush@ietf.org" <webpush@ietf.org>
Thread-Topic: [Webpush] Message update PR
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Date: Sat, 9 Jan 2016 01:10:56 +0000
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Archived-At: <http://mailarchive.ietf.org/arch/msg/webpush/aMINUatq6jDp4iP81TY02Ehuh-0>
Subject: Re: [Webpush] Message update PR
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Is there any further feedback for Martin's pull request below?

Thanks,
...Brian

-----Original Message-----
From: Webpush [mailto:webpush-bounces@ietf.org] On Behalf Of Martin Thomson
Sent: Thursday, November 12, 2015 1:00 PM
To: webpush@ietf.org
Subject: [Webpush] Message update PR

https://github.com/webpush-wg/webpush-protocol/pull/62

The above pull request and commit is the substance of what we
discussed in Yokohama regarding push message updates.  This proposes a
new header field, Topic, which can be added to a push message.

This doesn't really replace messages in the same way that the last one
does.  Instead, it causes the old message to be acknowledged/deleted
at the same time that the new message is created.  This avoids all the
nasty race conditions we discussed at the meeting.  If the old message
is being delivered, then this causes it to be acknowledged early;
since acknowledgment is idempotent, there are no race conditions.

--Martin

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