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Re: [rtcweb] [Cake] [rmcat] Catching up on diffserv markings

Jonathan Morton <chromatix99@gmail.com> Fri, 23 October 2015 13:29 UTC

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From: Jonathan Morton <chromatix99@gmail.com>
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Date: Fri, 23 Oct 2015 16:29:28 +0300
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References: <CAA93jw64CVt6wvexRfpmaF1gFk-iegKSJxQscjccRSZ0yshvsQ@mail.gmail.com> <5627B90D.8070106@alvestrand.no> <43B59C2F-4B64-4318-8339-04903AF2A6AC@cisco.com> <34EEB0FF-1922-42B5-A778-9BB66B7C4FDC@csperkins.org> <CAOJ7v-1RJbhe3i+_newDBObtJfJM6pWZUyRb4GZ8BHRDdDyKDg@mail.gmail.com>
To: Justin Uberti <juberti@google.com>
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Cc: "aqm@ietf.org" <aqm@ietf.org>, "cake@lists.bufferbloat.net" <cake@lists.bufferbloat.net>, "rmcat@ietf.org" <rmcat@ietf.org>, "rtcweb@ietf.org" <rtcweb@ietf.org>, Colin Perkins <csp@csperkins.org>
Subject: Re: [rtcweb] [Cake] [rmcat] Catching up on diffserv markings
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> On 22 Oct, 2015, at 22:54, Justin Uberti <juberti@google.com> wrote:
> 
> At present I'm not aware of any widely-deployed OS where an app can read the received ECN markings. 

I have personally verified that this is possible (for UDP) on Linux - we were investigating the feasibility of adding ECN to uTP (ie. BitTorrent).  The code looks horrid, but what raw sockets code doesn’t?

 - Jonathan Morton

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