On Fri, 7 Nov 2025 13:38:23 GMT, Daniel Jeliński <[email protected]> wrote:
>> CUBIC is a standard TCP congestion control algorithm that uses a cubic >> function instead of a linear congestion window increase function to improve >> scalability and stability over fast and long-distance networks. CUBIC has >> been adopted as the default TCP congestion control algorithm by the Linux, >> Windows, and Apple stacks. > > This PR adds a new congestion controller algorithm. It reuses a large part of > the QuicRenoCongestionController, which was refactored to two classes - > QuicBaseCongestionController, containing the shared code, and > QuicRenoCongestionController, containing only the code that is unique to Reno. > > CUBIC is now the default congestion controller. Reno can still be selected by > setting the system property `jdk.httpclient.quic.congestionController` to > `reno`. > > A new test was added to exercise the new congestion controller. Existing > tests continue to pass. This pull request has now been integrated. Changeset: a091af1d Author: Daniel Jeliński <[email protected]> URL: https://git.openjdk.org/jdk/commit/a091af1db34bc9e1646b687aad7704c3105d7ec7 Stats: 1018 lines in 9 files changed: 756 ins; 254 del; 8 mod 8371475: HttpClient: Implement CUBIC congestion controller Reviewed-by: dfuchs ------------- PR: https://git.openjdk.org/jdk/pull/28195
