Christian Huitema @huitema@social.secret-wg.org
Public

For the last 6 months, I have been working on a new congestion control algorithm for controlling QUIC flows, especially real-time media flow. It was disclosed last Monday during the IETF CCWG meeting. It is different from Cubic, BBr and other know algorithms, and hopefully better.

Slightly longer introduction with adequate links at privateoctopus.com/2025/11/05/

Introducing C4, Christian’s Congestion Control Code

For the past 6 months, I have been working on a new congestion control algorithm, called C4 for “Christian’s Congestion Control Code”, together with Suhas Nandakumar and Cullen Jennings at Cisco. Our goal is to design a congestion control algorithm that serves well real time communication applications, and is generally suitable for use with QUIC. This leads to the following priorities:

www.privateoctopus.com

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