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Re: [dispatch] Potential incoming work: web push for IMAP, CalDAV and CardDAV

Michael Toomim <toomim@gmail.com> Wed, 23 October 2019 21:22 UTC

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From: Michael Toomim <toomim@gmail.com>
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Date: Wed, 23 Oct 2019 14:22:19 -0700
Cc: Bron Gondwana <brong@fastmailteam.com>, dispatch@ietf.org
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To: Julian Reschke <julian.reschke@gmx.de>
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Subject: Re: [dispatch] Potential incoming work: web push for IMAP, CalDAV and CardDAV
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Julian:
> Mike:
>> The current design allows clients to specify a "Subscribe" header in the
>> GET request, which tells the server to keep the connection open and
>> stream all updates to the resource, as they happen.
> 
> Why would you need a new header field for that?

The header is just one way to do it.  What we *need* is some way for the client to signal to the server that it wants to subscribe to changes.  Right now, a header on GET seems to be the most elegant way to signal that.

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