Sorry for top posting, but ... Bigger question:
Why would DCCP be deprecated by Linux kernel?
Who makes that decision? Who argues against it?

It's a pretty good approach to properly congestion controlling many non-TCP 
communications protocols that might be implemented on UDP and lack good 
congestion control otherwise.
E.g. QUIC or RTP (for non CBR traffic) or various RPC-style  protocols. Larry 
Peterson recently wrote a piece asking why RPC wasn't well supported in 
distributed computing even after almost 50 years. Lack of Conception Control 
that works is a big issue. QUIC ain't it. QUiC is a HTTP replacement for REST 
protocol sementics.

So why discard a good thing that works?


-----Original Message-----
From: "Stephen Hemminger" <step...@networkplumber.org>
Sent: Sun, Jun 25, 2023 at 2:51 pm
To: "David P. Reed via Bloat" <bloat@lists.bufferbloat.net>
Cc: "David P. Reed via Bloat" <bloat@lists.bufferbloat.net>, "Cake  List" 
<c...@lists.bufferbloat.net>
Subject: Re: [Bloat] Two questions re high speed congestion management 
anddatagram protocols

On Sat, 24 Jun 2023 14:41:52 -0400 (EDT)
"David P. Reed via Bloat"  wrote:

> I also was looking back to DCCP as a useful way to get a UDP that handled 
> congestion without engaging the higher layers, and preserving the other 
> flexibility of UDP.

DCCP never got widely used, and Linux is on the path of deprecating it.


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