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Clarify zero-length CIDs and active_connection_id_limit TP #3426

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merged 7 commits into from May 17, 2020
Merged

Clarify zero-length CIDs and active_connection_id_limit TP #3426

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de6e116
Clarify zero-length CIDs and active_connection_id_limit TP
nharper Feb 5, 2020
19e5189
Ignore value if zero; clean up some other language.
nharper Feb 6, 2020
66894f8
Explain why parameter is ignored in certain cases.
nharper Feb 6, 2020
6936ea2
s/MUST be no less/MUST NOT be less/
nharper Feb 6, 2020
7eabbf9
Tweak MUST NOT be less/MUST be at least
nharper Feb 10, 2020
0b3ff6b
Clarify what to do if an invalid value is received
nharper Apr 8, 2020
149475b
Clarify issues instead of uses 0-length CID
nharper May 8, 2020
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12 changes: 7 additions & 5 deletions draft-ietf-quic-transport.md
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Expand Up @@ -4697,11 +4697,13 @@ active_connection_id_limit (0x000e):
to store. This value includes the connection ID received during the handshake,
that received in the preferred_address transport parameter, and those received
in NEW_CONNECTION_ID frames.
Unless a zero-length connection ID is being used, the value of the
active_connection_id_limit parameter MUST be no less than 2. If this
transport parameter is absent, a default of 2 is assumed.
When a zero-length connection ID is being used, the active_connection_id_limit
parameter MUST NOT be sent.
The value of the active_connection_id_limit parameter MUST be at least 2.
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An endpoint that receives a value less than 2 MUST close the connection
with an error of type TRANSPORT_PARAMETER_ERROR.
If this transport parameter is absent, a default of 2 is assumed. If an
endpoint issues a zero-length connection ID, it will never send a
NEW_CONNECTION_ID frame and therefore ignores the active_connection_id_limit
value received from its peer.

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If present, transport parameters that set initial flow control limits
(initial_max_stream_data_bidi_local, initial_max_stream_data_bidi_remote, and
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