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Re: [quicwg/base-drafts] Connection migration must be negotiated (#1271)

Nick Banks <notifications@github.com> Fri, 06 April 2018 16:49 UTC

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Date: Fri, 06 Apr 2018 16:49:17 +0000
From: Nick Banks <notifications@github.com>
Reply-To: quicwg/base-drafts <reply+0166e4ab94c428f76b15c13d7f9f324f37089f842219312192cf0000000116df670c92a169ce129955d7@reply.github.com>
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Subject: Re: [quicwg/base-drafts] Connection migration must be negotiated (#1271)
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On the client vs server option, I think it would be fine to state that if a client doesn't want to allow/support connection migration, it just doesn't do it. No negotiation needed. This is because server migration isn't currently a supported scenario for V1.

As to how to negotiate it server side, I'd prefer to use QUIC transport parameters, instead of different version numbers. A new, optional TP could be defined, `disallow_connection_migration`, that the server could set to indicate it doesn't allow/support connection migration. Instead, if needed, the client should close existing connections and start a new (0-RTT) connection.

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