Merge pull request #2354 from quicwg/stop-sending-ready

STOP_SENDING is permitted for Ready streams

draft-ietf-quic-transport.md

@@ -4498,16 +4498,15 @@ Final Size:
 ## STOP_SENDING Frame {#frame-stop-sending}
 
 An endpoint uses a STOP_SENDING frame (type=0x05) to communicate that incoming
-data is being discarded on receipt at application request.  This signals a peer
-to abruptly terminate transmission on a stream.
+data is being discarded on receipt at application request.  STOP_SENDING
+requests that a peer cease transmission on a stream.
 
-Receipt of a STOP_SENDING frame is invalid for a locally-initiated stream that
-has not yet been created or is in the "Ready" state (see
-{{stream-send-states}}). Receiving a STOP_SENDING frame for a locally-initiated
-stream that is "Ready" or not yet created MUST be treated as a connection error
-of type STREAM_STATE_ERROR.  An endpoint that receives a STOP_SENDING frame for
-a receive-only stream MUST terminate the connection with error
-STREAM_STATE_ERROR.
+A STOP_SENDING frame can be sent for streams in the Recv or Size Known states
+(see {{stream-send-states}}). Receiving a STOP_SENDING frame for a
+locally-initiated stream that has not yet been created MUST be treated as a
+connection error of type STREAM_STATE_ERROR.  An endpoint that receives a
+STOP_SENDING frame for a receive-only stream MUST terminate the connection with
+error STREAM_STATE_ERROR.
 
 The STOP_SENDING frame is as follows:
 
@@ -4719,14 +4718,12 @@ the initial limits (see {{zerortt-parameters}}).
 The MAX_STREAM_DATA frame (type=0x11) is used in flow control to inform a peer
 of the maximum amount of data that can be sent on a stream.
 
-An endpoint that receives a MAX_STREAM_DATA frame for a receive-only stream
-MUST terminate the connection with error STREAM_STATE_ERROR.
-
-An endpoint that receives a MAX_STREAM_DATA frame for a send-only stream
-it has not opened MUST terminate the connection with error STREAM_STATE_ERROR.
-
-Note that an endpoint may legally receive a MAX_STREAM_DATA frame on a
-bidirectional stream it has not opened.
+A MAX_STREAM_DATA frame can be sent for streams in the Recv state (see
+{{stream-send-states}}). Receiving a MAX_STREAM_DATA frame for a
+locally-initiated stream that has not yet been created MUST be treated as a
+connection error of type STREAM_STATE_ERROR.  An endpoint that receives a
+MAX_STREAM_DATA frame for a receive-only stream MUST terminate the connection
+with error STREAM_STATE_ERROR.
 
 The MAX_STREAM_DATA frame is as follows: