[quicwg/base-drafts] Multiple connections on the same port (#714)

Mike Bishop <notifications@github.com> Tue, 08 August 2017 22:55 UTC

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Date: Tue, 08 Aug 2017 22:55:20 +0000
From: Mike Bishop <notifications@github.com>
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Subject: [quicwg/base-drafts] Multiple connections on the same port (#714)
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@mikkelfj has raised questions about whether we might be able to maintain many connections on the same port.  @ianswett has pointed out that other connection-ID-oriented protocols operate *all* connections on the same port to minimize the use of ephemeral ports.  However, if any of those connections are to the same back end, there will be duplicate 5-tuples, and QUIC's current model doesn't support simultaneous handshakes with the same 5-tuple.

If we want to enable this, we would need to have the server's first flight continue using the client-chosen Connection ID, but contain the new Connection ID.

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