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Don't Reset BytesInFlight on Path Change #1976

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Sep 10, 2021
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@nibanks nibanks commented Sep 10, 2021

When a new path becomes active it resets congestion control (because you don't know anything about the new path's network characteristics yet). That was resetting BytesInFlight too. That shouldn't have been reset because you still can have packets in flight that might get ACK'ed.

Fixes #1975.

@nibanks nibanks added the Area: Core Related to the shared, core protocol logic label Sep 10, 2021
@nibanks nibanks requested a review from a team as a code owner September 10, 2021 22:22
@nibanks nibanks merged commit 2b9e617 into main Sep 10, 2021
@nibanks nibanks deleted the nibanks/path-cc-reset-fix branch September 10, 2021 23:28
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Congestion control on path change can cause in flight bytes to become incorrect.
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