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Note that path state cannot be removed without reception of PATH_ABANDON #475

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Note that path state cannot be removed without reception of PATH_ABANDON #475

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Note that path state cannot be removed without reception of PATH_ABANDON
mirjak Dec 11, 2024
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mirjak Dec 11, 2024
b162e64
Update draft-ietf-quic-multipath.md
huitema Dec 17, 2024
4b598c9
Update draft-ietf-quic-multipath.md
mirjak Dec 20, 2024
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6 changes: 6 additions & 0 deletions draft-ietf-quic-multipath.md
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Expand Up @@ -541,6 +541,12 @@ both to avoid generating spurious stateless packets as specified in
{{spurious-stateless-reset}} and to be able to acknowledge the
last packets received from the peer as specified in {{ack-after-abandon}}.

If a peer sends a PATH_ABANDON frame but never receives
a corresponding PATH_ABANDON frame, it might not be able to remove path state.
It is left to the implementation to handle this unexpected
behavior as it does not impact interoperability. However, an endpoint SHOULD NOT
remove path state earlier than 3 PTOs after sending the PATh_ABANDON frame.

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After receiving or sending a PATH_ABANDON frame, the endpoints SHOULD
promptly send PATH_ACK frames to acknowledge all packets received on
the path and not yet acknowledged, as specified in {{ack-after-abandon}}.
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