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Use the 'no outstanding' rule to defer idle timeout #1652

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Aug 15, 2018
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Use the 'no outstanding' rule to defer idle timeout #1652

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3c5ae7b
use the 'no outstanding' rule to defer idle timeout
martinthomson Aug 13, 2018
3526d34
Fixup idle timeout with no use of 'outstanding'
martinthomson Aug 15, 2018
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8 changes: 5 additions & 3 deletions draft-ietf-quic-transport.md
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Expand Up @@ -2501,9 +2501,11 @@ draining state when the idle timeout expires.
Each endpoint advertises their own idle timeout to their peer. The idle timeout
starts from the last packet received. In order to ensure that initiating new
activity postpones an idle timeout, an endpoint restarts this timer when sending
a packet if there are no other packets outstanding. This condition only applies
to packets that contain other than ACK or PADDING frames; those packets could
remain outstanding longer and prevent the timeout from being extended.
a packet. An endpoint does not postpone the idle timeout if another packet has
been sent containing frames other than ACK or PADDING, and that other packet has
not been acknowledged or declared lost. Packets that contain only ACK or
PADDING frames are not acknowledged until an endpoint has other frames to send,
so they could prevent the timeout from being refreshed.

The value for an idle timeout can be asymmetric. The value advertised by an
endpoint is only used to determine whether the connection is live at that
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