Re: Mirja Kühlewind's Discuss on draft-ietf -mmusic-sctp-sdp-23: (with DISCUSS)
Eric Rescorla <[email protected]>
| Newsgroups | gmane.ietf.mmusic |
|---|---|
| Message-ID | <CABcZeBPPFUe-ZtW9Lt636OhoMH8ws2oVi94YQJeUQKXteC-XRg@mail.gmail.com> |
As Christer says. This design is optimized for making the media stack simpler, which using TLS here would not do. -Ekr On Thu, Feb 16, 2017 at 7:00 AM, Christer Holmberg < [email protected]> wrote: > Hi, > > ---------------------------------------------------------------------- > DISCUSS: > ---------------------------------------------------------------------- > > >>> 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 > > _______________________________________________ mmusic mailing list [email protected] https://www.ietf.org/mailman/listinfo/mmusic