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 1AD117C7A71; Fri, 8 Jan 2021 20:56:24 +0100 (CET) Received: from potemkin.univ-paris7.fr (potemkin.univ-paris7.fr [IPv6:2001:660:3301:8000::1:1]) by korolev.univ-paris7.fr (8.14.4/8.14.4/relay1/82085) with ESMTP id 108JuN4G006850 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Fri, 8 Jan 2021 20:56:23 +0100 Received: from mailhub.math.univ-paris-diderot.fr (mailhub.math.univ-paris-diderot.fr [81.194.30.253]) by potemkin.univ-paris7.fr (8.14.4/8.14.4/relay2/82085) with ESMTP id 108JuNtt032318; Fri, 8 Jan 2021 20:56:23 +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 B6864F5446; Fri, 8 Jan 2021 20:56:23 +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 bFmgEjQdmvaI; Fri, 8 Jan 2021 20:56:21 +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 DC8B5F5442; Fri, 8 Jan 2021 20:56:21 +0100 (CET) Date: Fri, 08 Jan 2021 20:56:21 +0100 Message-ID: <871rev6w4a.wl-jch@irif.fr> From: Juliusz Chroboczek To: Toke =?ISO-8859-1?Q?H=F8iland-J=F8rgensen?= In-Reply-To: <87o8hzgr4j.fsf@toke.dk> References: <875z485swt.wl-jch@irif.fr> <87wnwnha9w.fsf@toke.dk> <87v9c77e20.wl-jch@irif.fr> <87turrh6y2.fsf@toke.dk> <87mtxj789e.wl-jch@irif.fr> <87o8hzgr4j.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 [IPv6:2001:660:3301:8000::1:2]); Fri, 08 Jan 2021 20:56:23 +0100 (CET) X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.7 (potemkin.univ-paris7.fr [194.254.61.141]); Fri, 08 Jan 2021 20:56:23 +0100 (CET) X-Miltered: at korolev with ID 5FF8B8E7.000 by Joe's j-chkmail (http : // j-chkmail dot ensmp dot fr)! X-Miltered: at potemkin with ID 5FF8B8E7.001 by Joe's j-chkmail (http : // j-chkmail dot ensmp dot fr)! X-j-chkmail-Enveloppe: 5FF8B8E7.000 from potemkin.univ-paris7.fr/potemkin.univ-paris7.fr/null/potemkin.univ-paris7.fr/ X-j-chkmail-Enveloppe: 5FF8B8E7.001 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 : 5FF8B8E7.000 on korolev.univ-paris7.fr : j-chkmail score : . : R=. U=. O=. B=0.000 -> S=0.000 X-j-chkmail-Score: MSGID : 5FF8B8E7.001 on potemkin.univ-paris7.fr : j-chkmail score : . : R=. U=. O=. B=0.000 -> S=0.000 X-j-chkmail-Status: Ham X-j-chkmail-Status: Ham Message-ID-Hash: 5OFDM7SIVN32ZUFC5XBXEO2VRXX5PCHA X-Message-ID-Hash: 5OFDM7SIVN32ZUFC5XBXEO2VRXX5PCHA 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: galene@lists.galene.org X-Mailman-Version: 3.3.2 Precedence: list Subject: [Galene] Re: Logging 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 one of these sides is always the Galene server, right? So if that > has public IPs, TURN is only used as an alternative port if the client > is behind a firewall blocking UDP? Assuming no firewall, that's correct, except for the case of repeated UDP packet losses causing ICE fallback to TURN. Like you, I was hoping I could get away without using a TURN server. In practice, I have found that there are just too many networks that block outgoing traffic. For example, the university's WiFi network is as restrictive as it can possibly get away with without violating the Eduroam service definition (see page 32 of [1]), while the network in the computer rooms allows no outgoing traffic whatsoever (I need to go over WiFi when I do so-called "hybrid" taching, where part of the students are at home). (And now you know why I implemented the "Blackboard mode".) [1] https://www.eduroam.org/wp-content/uploads/2016/05/GN3-12-192_eduroam-policy-service-definition_ver28_26072012.pdf -- Juliusz