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Re: [Webtransport] Confirming Consensus on WebTransport protocols

Alan Frindell <afrind@fb.com> Wed, 13 January 2021 17:16 UTC

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From: Alan Frindell <afrind@fb.com>
To: Ian Swett <ianswett=40google.com@dmarc.ietf.org>, Martin Thomson <mt@lowentropy.net>
CC: WebTransport <webtransport@ietf.org>
Thread-Topic: [Webtransport] Confirming Consensus on WebTransport protocols
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Date: Wed, 13 Jan 2021 17:16:25 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/webtransport/DIaad1m-44u_lQH8_GTt9UnwMjg>
Subject: Re: [Webtransport] Confirming Consensus on WebTransport protocols
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> I'd like to call out that there are two things which could be referred to as 'pooling'.  One is using a single connection for HTTP/3 and WebTransport at the same time.  The other is support for multiple WebTransport sessions inside a single connection.

Absolutely.  QuicTransport prevents even the possibility of pooling HTTP and WebTransport on the same connection, as is done with H2 and WebSockets.

> This latter type of 'pooling' is part of what makes Http3Transport more complex than QuicTransport.  Was there ever an explicit question about whether multiple sessions on a single connection are necessary or even useful?

We have use cases for pooling multiple sessions on the same connection which I described during IETF 109.  I don’t want to completely hijack this thread to discuss them, however.  I’d prefer to wait until we finish confirming consensus on questions 1 and 2 before diving deep into pooling.

-Alan

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