Re: Mirja Kühlewind's Discuss on draft-ie tf-mmusic-sctp-sdp-23: (with DISCUSS)

Hi,

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DISCUSS:
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>>> Why is this using TCP/DTLS/SCTP instead of TCP/TLS/SCTP?	
>>> 
>> Because the way it is realized is by transporting SCTP on top of DTLS (as defined in draft-ietf-tsvwg-sctp-dtls-encaps) and 
>> transporting DTLS on top of TCP (defined in RFC 4571).
>
> I got this but DTLS is a mapping to use TLS with UDP because UDP is an unreliable datagram transport. If you use TCP, you 
> should use TLS. And rfc4571 is not a mapping of DTLS to TCP.

The framing mechanism of RFC 4571 is used, with DTLS packets sent instead of RTP packets.

Regards,

Christer