Limited connection remain in Hystart startup with growing CWIN

private-octopus / picoquic

Minimal implementation of the QUIC protocol

MIT License

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Limited connection remain in Hystart startup with growing CWIN #1485

Closed huitema closed 9 months ago

huitema commented 1 year ago

The datagram_wifi test shows that the CWIN is continuously growing through the connection. This is because the app limited test always stays in Hystart mode, and as long as the RTT remains stable, the CWIN keeps increasing,

huitema commented 1 year ago

There is a mention of a similar issue in bug #1499 -- it could well explain why Cubic is suddenly using a very large congestion Window.

huitema commented 9 months ago

Fixed. Cubic implementation does not grow the Window when application-limited.