* ccutils: use millisecond resolution for probe interval backoff
ProbeSignal grew probeInterval via Seconds(), which truncates the float
to the nearest nanosecond before scaling by time.Second:
time.Duration(probeInterval.Seconds() * BackoffFactor) * time.Second
With BackoffFactor=1.5 and the default BaseInterval of 3 s, the first
congestion signal produced 4 s instead of 4.5 s, and the error compounded
on every subsequent signal (4 s → 6 s → 9 s → 13 s ... instead of
4.5 s → 6.75 s → 10.125 s ...). The interval converges to MaxInterval
later than intended, so the server probes more frequently during sustained
congestion than the configuration requests.
probeDuration in the same function already uses the correct idiom:
time.Duration(float64(probeDuration.Milliseconds()) * Factor) * time.Millisecond
Apply the same pattern to probeInterval so both fields are computed
consistently with millisecond precision.
Found by a defect-hunting pipeline I build and run ([Dev-next-gen](https://github.com/Dev-next-gen)), using Claude Code with Anthropic's Claude Opus 5.
* ccutils: remove probe interval backoff test
Requested by reviewer.
* WIP
* no worker
* fixes
* use congested packet groups
* oldest group
* markers
* WIP
* WIP
* WIP
* WIP
* WIP
* clean up
* fmt
* consolidate
* store last packet only for bwe extension cases
* Try up-allocation on neutral trend.
Some probes end up with neutral trend due to getting much estimates of
same value. It is okay to try up-allocating in those cases. Otherwise,
the stream allocator some times gets stuck and does not up-allocate at
all as all probes end up neutral.
Changing the name of the signal to `NotCongesting` to signify it is
either neutral or clearing.
* wait 5 RTT for probe to finalize
* trend detector object encoder
* Simplify probe sleep calculations.
Splitting into buckets made it problematic around the boundaries and it
was ugly code too. Simplify and set up probes with sleep after each
probe to get the desired interval/rate.
* continue after pop
Cosmetic. While thinking through how to structure probing better,
noticing small things here and there. Cleaning up and making some small
PRs along the way.
* keep track of RTX bytes separately
* packet group
* Packet group of 50ms
* Minor refactoring
* rate calculator
* send bit rate
* WIP
* comment
* reduce packet infos size
* extended twcc seq num
* fix packet info
* WIP
* queuing delay
* refactor
* config
* callbacks
* fixes
* clean up
* remove debug file, fix rate calculation
* fmt
* fix probes
* format
* notes
* check loss
* tweak detection settings
* 24-bit wrap
* clean up a bit
* limit symbol list to number of packets
* fmt
* clean up
* lost
* fixes
* fmt
* rename
* fixes
* fmt
* use min/max
* hold on early warning of congestion
* make note about need for all optimal allocation on hold release
* estimate trend in congested state
* tweaks
* quantized
* fmt
* TrendDetector generics
* CTR trend
* tweaks
* config
* config
* comments
* clean up
* consistent naming
* pariticpant level setting
* log usage mode
* probing hacks
* WIP
* no lock
* packet group config
* ctr trend refactor
* cleanup and fixes
* format
* debug
* format
* move prober to ccutils
* clean up
* clean up
* file output
* wake under lock
* keep track of RTX bytes separately
* packet group
* Packet group of 50ms
* Minor refactoring
* rate calculator
* send bit rate
* WIP
* comment
* reduce packet infos size
* extended twcc seq num
* fix packet info
* WIP
* queuing delay
* refactor
* config
* callbacks
* fixes
* clean up
* remove debug file, fix rate calculation
* fmt
* fix probes
* format
* notes
* check loss
* tweak detection settings
* 24-bit wrap
* clean up a bit
* limit symbol list to number of packets
* fmt
* clean up
* lost
* fixes
* fmt
* rename
* fixes
* fmt
* use min/max
* hold on early warning of congestion
* make note about need for all optimal allocation on hold release
* estimate trend in congested state
* tweaks
* quantized
* fmt
* TrendDetector generics
* CTR trend
* tweaks
* config
* config
* comments
* clean up
* consistent naming
* pariticpant level setting
* log usage mode
* feedback
Leo Camus