From nobody Sun Oct 31 22:59:51 2021 Return-Path: X-Original-To: rtcweb@ietfa.amsl.com Delivered-To: rtcweb@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id AF5C83A1036 for ; Sun, 31 Oct 2021 22:59:48 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.098 X-Spam-Level: X-Spam-Status: No, score=-2.098 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, HTML_MESSAGE=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=telurix.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id geUX6IiNOOjQ for ; Sun, 31 Oct 2021 22:59:44 -0700 (PDT) Received: from mail-qk1-x729.google.com (mail-qk1-x729.google.com [IPv6:2607:f8b0:4864:20::729]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id DD2763A102E for ; Sun, 31 Oct 2021 22:59:43 -0700 (PDT) Received: by mail-qk1-x729.google.com with SMTP id r8so1781922qkp.4 for ; Sun, 31 Oct 2021 22:59:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=telurix.com; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=IDmFvpyTjZHjxHEnj7cLelIqGSRvnd2qpV/enmDULps=; b=ItwSPeEat1vOR0r47VJt7PUjv3GKsu2Nx1byezUK82Eluo+rt3l3RIKL++TzJdioi8 jnB/wXu21boTpMTGbHd2ux4j8kx6jxPu8AHuDgusemWgonuvDcQx/bqZDDDziEoshpQ6 BKvHdjJnuCebp5Cv3mZ7UQnwlirCBO5349wKc= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=IDmFvpyTjZHjxHEnj7cLelIqGSRvnd2qpV/enmDULps=; b=PJgjYYMRUNv8WGs2xJcNskl46IIlYoYcc0JRw/ppOCieI2ppTMHI/iYcpj7o34izdG MJFCXLOjgfV++Hat0JPQe7gmpqPRLNJes6YQhcMM1KEPdgIqIkcHtQQAUGb3bzj3wlbI 76VsPwJ1mzGS357zHGWhBf+5J7UQVOAmx+UH4SOjyR7bzZ/npmNYvQRw0b6fnYLiD6+S pJRklmR8UA5rbTCXX69SK4Y7laMMwmovi33bIrQZccxxo+qfZ+EE/50T0scbChDkb2AS iV28DRRj8KwdjC5wY3wE4hccJuzjGl0FQud6QrJksSgb3qE/HMNrY2Au7TNdzDnanSZk 67Vg== X-Gm-Message-State: AOAM532VkBYeEDRKTi8IxWwHSXhCgk6uGcNBCvYZ4xW4PZJ0uKAl6kAM Stz0ezyPWC8M4T1XYL9LJIPDvEwvaNS9Jg== X-Google-Smtp-Source: ABdhPJxe33bWV17Ne/8eafpBOeMM5RuvMUW8rPIagZV49vgeQblZiqR3HDptJp2LBXBvgBHa64NUkg== X-Received: by 2002:a05:620a:430d:: with SMTP id u13mr21183439qko.93.1635746379215; Sun, 31 Oct 2021 22:59:39 -0700 (PDT) Received: from mail-yb1-f172.google.com (mail-yb1-f172.google.com. [209.85.219.172]) by smtp.gmail.com with ESMTPSA id w5sm10090685qko.54.2021.10.31.22.59.38 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 31 Oct 2021 22:59:38 -0700 (PDT) Received: by mail-yb1-f172.google.com with SMTP id d204so41986468ybb.4 for ; Sun, 31 Oct 2021 22:59:38 -0700 (PDT) X-Received: by 2002:a05:6902:110d:: with SMTP id o13mr33277141ybu.121.1635746377795; Sun, 31 Oct 2021 22:59:37 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: Roman Shpount Date: Mon, 1 Nov 2021 01:59:25 -0400 X-Gmail-Original-Message-ID: Message-ID: To: Christer Holmberg Cc: Justin Uberti , Justin Uberti , RTCWeb IETF Content-Type: multipart/alternative; boundary="000000000000ca8a1305cfb3e1da" Archived-At: Subject: Re: [rtcweb] Working Group Last Call for draft-uberti-rtcweb-rfc8829bis-01.txt X-BeenThere: rtcweb@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Real-Time Communication in WEB-browsers working group list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 01 Nov 2021 05:59:49 -0000 --000000000000ca8a1305cfb3e1da Content-Type: text/plain; charset="UTF-8" On Sun, Oct 31, 2021 at 7:46 AM Christer Holmberg < christer.holmberg@ericsson.com> wrote: > >2. Make endpoints generate subsequent offers that are valid initial > offers in 3PCC scenarios. This is what draft 8843 bis does. > > > > Correct. > > > > However, keep in mind that it is not only about how to encode the port > numbers and bundle-only attributes. Sending an initial offer also comes > with a set of procedures. Some of those (e.g., ICE) I assume you will have > to do anyway, as the remote endpoint changes. > > > There is already PeerConnection.restartIce() which will cause the next offer created after restartIce call to initiate ICE restart, set new ufrag/pwd, and collect new candidates. This is the method an end point would call before generating an offer for 3PCC (or to recover a connection which failed due to bad connectivity). It would not be illogical to set port zero and bundle-only for all bundled m= lines in this case, when max-bundle policy is used. Best Regards, _____________ Roman Shpount --000000000000ca8a1305cfb3e1da Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

On Sun, Oct 31,= 2021 at 7:46 AM Christer Holmberg <christer.holmberg@ericsson.com> wrote:
=

>2. Make endpoints generate subsequent offers tha= t are valid initial offers in 3PCC scenarios. This is what draft 8843 bis d= oes.

=C2=A0

Correct.

=C2=A0

However, keep in mind that it i= s not only about how to encode the port numbers and bundle-only attributes.= Sending an initial offer also comes with a set of procedures. Some of thos= e (e.g., ICE) =C2=A0I assume you will have to do anyway, as the remote endpo= int changes.



There is already PeerConnection.restartIce() which will cause the next off= er created after restartIce=C2=A0call to initiate ICE restart, set new ufra= g/pwd, and collect new candidates. This is the method an end point would ca= ll before generating an offer for 3PCC (or to recover a connection which fa= iled due to bad connectivity). It would not be illogical to set port zero a= nd bundle-only for all bundled m=3D lines in this case,=C2=A0when max-bundl= e policy is used.

Best Regards,
_____________=
Roman Shpount
=C2=A0<= /div>
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