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describe what happens when the PTO timer expires #2455

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describe what happens when the PTO timer expires #2455

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describe what happens when the PTO timer expires
marten-seemann Feb 12, 2019
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Martin's suggestion
martinthomson Feb 12, 2019
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Nick's suggestion
marten-seemann Feb 13, 2019
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2 changes: 1 addition & 1 deletion draft-ietf-quic-recovery.md
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Expand Up @@ -507,7 +507,7 @@ The PTO value MUST be set to at least kGranularity, to avoid the timer expiring
immediately.

When a PTO timer expires, the sender sends a probe packet as described in the
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It could be two probe packets, so maybe "sends one or two probe packets"?

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Or simply "probes the network"?

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Or simply nothing. A probe packet is sent if two packets are sent, and this is not normative text.

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I like @nibanks's suggestion. It's independent of how the probing is actually done, which we describe in detail later.

next section. The PTO period MUST be set to twice its current value. This
next section. The PTO period then MUST be set to twice its current value. This
exponential reduction in the sender's rate is important because the PTOs might
be caused by loss of packets or acknowledgements due to severe congestion.

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