Re: [quicwg/base-drafts] Tolerate unknown stream types, add greasing (#1525)

Mike Bishop <notifications@github.com> Fri, 06 July 2018 18:02 UTC

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Subject: Re: [quicwg/base-drafts] Tolerate unknown stream types, add greasing (#1525)
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MikeBishop commented on this pull request.



>  unknown. Implementations SHOULD NOT send stream types the peer is not already
-known to support, since a stream error can be promoted to a connection error at
-the peer's discretion (see {{errors}}).
+known to support. Recipients of unknown stream types MAY trigger a QUIC
+STOP_SENDING frame with an error code of HTTP_UNKNOWN_STREAM_TYPE, but MUST NOT
+consider such streams to be an error of any kind.
+
+### Reserved Stream Types {#stream-grease}
+
+Stream types of the format `0x1f * N` are reserved to exercise the requirement
+that unknown types be ignored. These streams have no semantic meaning, and can
+be sent when application-layer padding is desired.  They MAY also be sent on

Added a mention in Security Considerations.

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