RFR: 8371475: HttpClient: Implement CUBIC congestion controller [v3]

[Daniel Jeliński]

On Mon, 17 Nov 2025 15:16:32 GMT, Daniel Fuchs <dfuchs at openjdk.org> wrote:

>> Well that's an interesting question. The RFC does not suggest clamping wMaxBytes in any way, so we sometimes do end up with wMaxBytes < congestionWindow, and kNanos < 0, even in the `testReduction` test. That seems to be in line with the RFC.
>> 
>> A negative `k` value is pretty well tolerated by the algorithm. It just means that we will start increasing the window slightly faster than we would otherwise.
>
> OK then. Could be worth adding a comment that kNanos can be negative and that it is OK.

Comment added.

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PR Review Comment: https://git.openjdk.org/jdk/pull/28195#discussion_r2549250174