Re: [tsvwg] host-to-network signaling requirements

[Tom Herbert <[e-mail]>]

On Sat, Mar 16, 2024 at 8:25 PM Dan Wing <[e-mail]> wrote:
>
> I like the update to draft-kaippallimalil-tsvwg-media-hdr-wireless-04 which discusses requirements. For my use-case, however, the ISP won't have a relationship with the server (content provider, if you will) because the server is an on-premise datacenter belonging to an enterprise or other business, rather than to a consumer-focused video streaming platform. This means the ISP won't accept draft-kaippallimalil-tsvwg-media-hdr-wireless metadata from any sender, because otherwise such metadata would be misused or abused, wreaking havoc with legitimate flows that should receive better service. At minimum, my use-case needs a mechanism to authorize honoring per-packet metadata from certain sending IP addresses, but once there is a way to signal those IP addresses, we could signal other metadata on a per-flow basis.  Some of this out-of-band host-to-network signaling would reduce the per-packet signaling proposed in draft-kaippallimalil-tsvwg-media-hdr-wireless; some would just assist with the per-packet signaling.

Hi Dan,

Very interesting! Can you please take a look at
draft-herbert-host2netsig, it would be great if we could derive a
first class solution in IETF for host to network signaling and all use
cases that are popping up.

Tom

>
> The gist of the idea is the receiver -- the user -- choses which incoming packets are treated differently by the network when a reactive policy event occurs (read: sudden congestion, packet loss to the receiver, etc.).
>
> This can provide immediate benefit to SRTP and RTP flows and media over QUIC (MoQ) as MoQ moves towards unreliable datagrams.  It also benefits other UDP-based protocols such as gaming.
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> We wrote https://datatracker.ietf.org/doc/draft-rwbr-tsvwg-signaling-use-cases/ which explains the benefits of such a host to network signaling protocol and have been updating it this week at https://danwing.github.io/signaling-use-cases/draft-rwbr-tsvwg-signaling-use-cases.html (which will update the existing -01 on Monday).  Such a host-to-network signaling can also improve interoperability and provide version negotiation when there is a business relationship between the ISP and content provider, as proposed in draft-kaippallimalil-tsvwg-media-hdr-wireless-04.  As many signaling approaches are being considered, and for the sake of better interop, it would be beneficial to separate the definition of the metadata vs. channels used to share them.
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> Mohamed Boucadair present draft-rwbr-tsvwg-signaling-use-cases at Tuesday's TSVWG meeting.
>
> -d
>