Re: [quicwg/base-drafts] Security Considerations text for a memory limit (#3004)

Kazuho Oku <notifications@github.com> Wed, 04 September 2019 03:55 UTC

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Subject: Re: [quicwg/base-drafts] Security Considerations text for a memory limit (#3004)
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kazuho commented on this pull request.



> @@ -1126,6 +1126,13 @@ HTTP_QPACK_DECODER_STREAM_ERROR (0x202):
 
 TBD.
 
+While the negotiated limit on the dynamic table size accounts for much of the
+memory that can be consumed by a QPACK implementation, data which cannot be
+immediately sent due to flow control is not affected by this limit.
+Implementations MUST limit the size of unsent data, especially on the decoder

I think that having a MUST for the decoder stream might make sense (as the peer controls what is to be sent on the decoder stream). OTOH I share the view that having MUST limit + MUST close if exceeded is a bit off for the encoder stream.

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