from Hacker News

KCP: A Fast and Reliable ARQ Protocol

by mpsq on 4/12/21, 9:55 AM with 6 comments

• by rektide on 4/12/21, 7:50 PM

  ARQ: Automatic Repeat Request[1]. This is an article about a TCP competitor boasting lower latency.

  [1] https://en.wikipedia.org/wiki/Automatic_repeat_request

• by eps on 4/12/21, 9:56 PM

  Beating TCP is not hard. But doing it without starving TCP sessions to death is.

  The only way to co-exist gracefully with TCP is to use a compatible backoff mechanism. Anything more aggressive will basically steal all of the bandwidth from TCP and that's it.

• by ysfgaming on 4/13/21, 4:57 AM

  It's worth mentioning that at least a few popular and successful games, such as Genshin Impact, use this protocol. The aforementioned is actually the only reason I knew it existed before now.