Re: [rtcweb] DTLS, DTLS-SRTP, and 5-tuples

[Christer Holmberg <[e-mail]>]

Hi,

>>>> New things can be defined in the future. When they do, they should treat ICE a virtual communication channel that
>>>> provides unreliable packet transport with no order guarantees which can span multiple 5-tuples.
>>>
>>> Then the scope of what we discuss now should not be "whatever protocol" - it should be the specific protocols we are discussing.
>>
>> I think ICE-bis should define protocol requirements for the protocols that can run on top of ICE, which includes:
>> 1. Ability to run over unreliable packet based transport with no order guarantees
>> 2. Ability to demux with STUN packets
>> 3. Not make any assumption about IP addresses, ports, or other transport level protocols attributes such as TOS. 
>
> I think these are good criteria. Note that TCP would meet these criteria, and I see no problem running TCP atop ICE (we used to do this in an old version of our data channel code).

I don't think a TCP connection can span over multiple 5-tuples - each TCP connection will be bound to one 5-tuple.

Perhaps the protocol running on top of TCP can switch between different TCP connections, though. For example, would it be possible to span a TLS connection over multiple TCP connections?

> HTTP, on the other hand, would not meet criterion #1.

Agree.

Regards,

Christer