From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: mail.toke.dk; spf=pass (mailfrom) smtp.mailfrom=irif.fr (client-ip=2001:660:3301:8000::1:2; helo=korolev.univ-paris7.fr; envelope-from=jch@irif.fr; receiver=) Received: from korolev.univ-paris7.fr (korolev.univ-paris7.fr [IPv6:2001:660:3301:8000::1:2]) by mail.toke.dk (Postfix) with ESMTPS id 9CFDA7C0C7B; Tue, 29 Dec 2020 02:56:43 +0100 (CET) Received: from mailhub.math.univ-paris-diderot.fr (mailhub.math.univ-paris-diderot.fr [81.194.30.253]) by korolev.univ-paris7.fr (8.14.4/8.14.4/relay1/82085) with ESMTP id 0BT1ufVw019711; Tue, 29 Dec 2020 02:56:41 +0100 Received: from mailhub.math.univ-paris-diderot.fr (localhost [127.0.0.1]) by mailhub.math.univ-paris-diderot.fr (Postfix) with ESMTP id F25BBB29BF; Tue, 29 Dec 2020 02:56:40 +0100 (CET) X-Virus-Scanned: amavisd-new at math.univ-paris-diderot.fr Received: from mailhub.math.univ-paris-diderot.fr ([127.0.0.1]) by mailhub.math.univ-paris-diderot.fr (mailhub.math.univ-paris-diderot.fr [127.0.0.1]) (amavisd-new, port 10023) with ESMTP id oEeCA9kTDT9K; Tue, 29 Dec 2020 02:56:39 +0100 (CET) Received: from pirx.irif.fr (unknown [78.194.40.74]) (Authenticated sender: jch) by mailhub.math.univ-paris-diderot.fr (Postfix) with ESMTPSA id 86F6BB29BC; Tue, 29 Dec 2020 02:56:39 +0100 (CET) Date: Tue, 29 Dec 2020 02:56:38 +0100 Message-ID: <87k0t1e5nt.wl-jch@irif.fr> From: Juliusz Chroboczek To: Toke =?ISO-8859-1?Q?H=F8iland-J=F8rgensen?= In-Reply-To: <8735zpya4m.fsf@toke.dk> References: <1082cfcde178ddb72b51bcd03ee6770a@kn1ght.org> <87zh1zt6ip.wl-jch@irif.fr> <87y2hjt5fx.wl-jch@irif.fr> <87y2hjxa64.fsf@toke.dk> <87r1nau8v0.wl-jch@irif.fr> <87sg7qyaj2.fsf@toke.dk> <87a6tx7olm.wl-jch@irif.fr> <8735zpya4m.fsf@toke.dk> User-Agent: Wanderlust/2.15.9 (Almost Unreal) Emacs/27.1 Mule/6.0 MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=US-ASCII X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.7 (korolev.univ-paris7.fr [194.254.61.138]); Tue, 29 Dec 2020 02:56:41 +0100 (CET) X-Miltered: at korolev with ID 5FEA8CD9.000 by Joe's j-chkmail (http : // j-chkmail dot ensmp dot fr)! X-j-chkmail-Enveloppe: 5FEA8CD9.000 from mailhub.math.univ-paris-diderot.fr/mailhub.math.univ-paris-diderot.fr/null/mailhub.math.univ-paris-diderot.fr/ X-j-chkmail-Score: MSGID : 5FEA8CD9.000 on korolev.univ-paris7.fr : j-chkmail score : . : R=. U=. O=. B=0.000 -> S=0.000 X-j-chkmail-Status: Ham Message-ID-Hash: S7XCQABJO3AWUQYA6L3A2FKKM7P2MAYJ X-Message-ID-Hash: S7XCQABJO3AWUQYA6L3A2FKKM7P2MAYJ X-MailFrom: jch@irif.fr X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; suspicious-header CC: Cell , galene@lists.galene.org X-Mailman-Version: 3.3.2 Precedence: list Subject: [Galene] Re: coturn config List-Id: =?utf-8?q?Gal=C3=A8ne_videoconferencing_server_discussion_list?= Archived-At: List-Archive: List-Help: List-Post: List-Subscribe: List-Unsubscribe: > ...And it turns out that I completely misunderstood how this is supposed > to work: Yeah, so did I. What coturn apparently implements makes a lot more sense than what the draft describes. Apparently, the credentials are computed deterministically from the username and a shared secret. In order to avoid replay, a timestamp is encoded within the username (phooey). Since both servers perform the same computation, there is no need for the brittle HTTP-based protocol. See https://github.com/coturn/coturn/blob/master/examples/etc/turnserver.conf#L209 Supposing I decide to implement this -- any ideas how this should be configured? -- Juliusz