From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pa0-x235.google.com (mail-pa0-x235.google.com [IPv6:2607:f8b0:400e:c03::235]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by huchra.bufferbloat.net (Postfix) with ESMTPS id 8394121F3FB for ; Fri, 23 Oct 2015 06:31:57 -0700 (PDT) Received: by padhk11 with SMTP id hk11so118997150pad.1 for ; Fri, 23 Oct 2015 06:31:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=0QKXTZo3L/X2O67++UN6W4oD2Lv0zQbbE4dFJ6mR1sY=; b=fTVFMxteusyU0OnJoAyr2aGyDH5sF8aN/drVXkrAGS/q70aMHaTxJf4sRy+V5QjBl9 GYz/bmYg6Za+TKoOa9/MDYevMDUSR+/1GRtzAx3DPtbzFOKypX7IYz6/5LmPKC4+v0i/ Y3juvFO7hGGm3JF2VYO/0xSD7Aedn9V+xnyyfA2ED5jwyFyLNt5AGg1KqcG3pEKTCWJq 8XPJm6zDqO22A/XEfJbkL67oN5O5NYknXqkC4WAXzdfPGUjdCky4VvrFNtjDrMYmXNAl BYA9j+vBa+gcR2h+o1/c7VFLdu6w0+iFN6dLQBr3QbkPoPNoMyeBuTCuQWcA5HvZGnd5 wuzQ== MIME-Version: 1.0 X-Received: by 10.68.182.161 with SMTP id ef1mr5236114pbc.79.1445607116230; Fri, 23 Oct 2015 06:31:56 -0700 (PDT) Received: by 10.66.23.38 with HTTP; Fri, 23 Oct 2015 06:31:56 -0700 (PDT) In-Reply-To: References: <5627B90D.8070106@alvestrand.no> <43B59C2F-4B64-4318-8339-04903AF2A6AC@cisco.com> <34EEB0FF-1922-42B5-A778-9BB66B7C4FDC@csperkins.org> Date: Fri, 23 Oct 2015 17:31:56 +0400 Message-ID: From: Loganaden Velvindron To: Justin Uberti Content-Type: multipart/alternative; boundary=089e0160bf50a5dac80522c5a29a Cc: "Pal Martinsen \(palmarti\)" , "aqm@ietf.org" , "cake@lists.bufferbloat.net" , "rmcat@ietf.org" , "rtcweb@ietf.org" , Colin Perkins Subject: Re: [Cake] [rmcat] [rtcweb] Catching up on diffserv markings X-BeenThere: cake@lists.bufferbloat.net X-Mailman-Version: 2.1.13 Precedence: list List-Id: Cake - FQ_codel the next generation List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 23 Oct 2015 13:32:19 -0000 --089e0160bf50a5dac80522c5a29a Content-Type: text/plain; charset=UTF-8 On Thu, Oct 22, 2015 at 11:54 PM, Justin Uberti wrote: > At present I'm not aware of any widely-deployed OS where an app can read > the received ECN markings. > > iOS9 added support for this within the kernel, and it's used for TCP, but > not exposed to userspace. There is an open Radar bug asking for this info > to be exposed to userspace. > > FWIW, Chrome supports setting the DSCP markings if you set a magic > parameter. But it's not on by default, mainly because we've never done the > auditing necessary to ensure this doesn't randomly break in various > dimly-lit parts of the internet. > > > dimly-lit ? You mean regions like Africa ? --089e0160bf50a5dac80522c5a29a Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable


On Thu, Oct 22, 2015 at 11:54 PM, Justin Uberti <<= a href=3D"mailto:juberti@google.com" target=3D"_blank">juberti@google.com> wrote:
At = present I'm not aware of any widely-deployed OS where an app can read t= he received ECN markings.=C2=A0

iOS9 added support for t= his within the kernel, and it's used for TCP, but not exposed to usersp= ace. There is an open Radar bug asking for this info to be exposed to users= pace.

FWIW, Chrome supports setting the DSCP marki= ngs if you set a magic parameter. But it's not on by default, mainly be= cause we've never done the auditing necessary to ensure this doesn'= t randomly break in various dimly-lit parts of the internet.


dimly-lit= ? You mean regions like Africa ?

=C2=A0
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