On Fri, 14 Nov 2025 12:53:28 GMT, Daniel Fuchs <[email protected]> wrote:

>> Daniel Jeliński has updated the pull request with a new target base due to a 
>> merge or a rebase. The pull request now contains 24 commits:
>> 
>>  - Update test comments
>>  - Convert CubicTest to JUnit
>>  - Merge declaration and assignment
>>  - More aggressive target growth
>>  - Merge remote-tracking branch 'origin/master' into quic-cubic
>>  - Make classes final
>>  - Rename system property to internal
>>  - Add a system property to select congestion controller
>>  - Implement fast convergence
>>  - Add comments
>>  - ... and 14 more: https://git.openjdk.org/jdk/compare/1f1f7bb4...195b0f89
>
> src/java.net.http/share/classes/jdk/internal/net/http/quic/QuicCubicCongestionController.java
>  line 114:
> 
>> 112:         if (!isAppLimited) {
>> 113:             if (wEstBytes < cwndPriorBytes) {
>> 114:                 wEstBytes += Math.max((long) (ALPHA * maxDatagramSize * 
>> packetBytes / congestionWindow), 1);
> 
> should we assert that congestionWindow is > 2 ?

The congestion window is in bytes, and it's never reduced below 
2*maxDatagramSize, which is never less than 2400. Not sure if we should add 
that particular assertion, but it would probably make sense to assert that 
packetAcked does not decrease the congestion window. I'll see what I can do.

-------------

PR Review Comment: https://git.openjdk.org/jdk/pull/28195#discussion_r2533913741

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