Re: [quicwg/base-drafts] Don't store or retransmit PATH_RESPONSE frames, avoid buffering (#2729)

Eric Kinnear <> Tue, 28 May 2019 22:12 UTC

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From: Eric Kinnear <>
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Subject: Re: [quicwg/base-drafts] Don't store or retransmit PATH_RESPONSE frames, avoid buffering (#2729)
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erickinnear commented on this pull request.

> @@ -1722,6 +1722,10 @@ it can associate the peer's response with the corresponding PATH_CHALLENGE.
 On receiving a PATH_CHALLENGE frame, an endpoint MUST respond immediately by
 echoing the data contained in the PATH_CHALLENGE frame in a PATH_RESPONSE frame.
+An endpoint MUST NOT store or retransmit a PATH_RESPONSE frame, as a new
+PATH_CHALLENGE frame will be sent if another PATH_RESPONSE frame is needed.  An
+endpoint MAY choose to limit the number of pending PATH_RESPONSE frames

Clarified in 52957ec. I didn't want to get into which one to respond to on a given CID, since I don't think it makes a huge difference and it makes it a bit more confusing.

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