[quicwg/base-drafts] error handling for path_response (#1265)

Patrick McManus <notifications@github.com> Thu, 05 April 2018 15:34 UTC

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Date: Thu, 05 Apr 2018 15:34:24 +0000
From: Patrick McManus <notifications@github.com>
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Subject: [quicwg/base-drafts] error handling for path_response (#1265)
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>   If the content of a PATH_RESPONSE frame does not match the content of
>   a PATH_CHALLENGE frame previously sent by the endpoint, the endpoint
  > MAY generate a connection error of type UNSOLICITED_PATH_RESPONSE.

I think this is a footgun - we should just say MUST ignore.

PATH_RESPONSE is not sent reliably but PATH_CHALLENGES are regenerated as needed. So you've got a non-deterministic system because you have to timeout things.

If we want to keep the error then I think these frames ought to be considered reliable so a deterministic call can be made.

But I think the better route is to just ignore a RESPONSE you're not going to do anything with.

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