search

rtcweb-wg / rtcweb-transport

draft-ietf-rtcweb-transport
2 stars 2 forks source link

Adds note about DTLS over ICE and "5-tuples". #2

Closed alvestrand closed 9 years ago

ekr commented 9 years ago

LGTM with comment above.

juberti commented 9 years ago

I think we should just refer people to 5763, S 6.7.1:

Interactive Connectivity Establishment (ICE), as specified in [RFC5245], provides a methodology of allowing participants in multimedia sessions to verify mutual connectivity. When ICE is being used, the ICE connectivity checks are performed before the DTLS handshake begins. Note that if aggressive nomination mode is used, multiple candidate pairs may be marked valid before ICE finally converges on a single candidate pair. Implementations MUST treat all ICE candidate pairs associated with a single component as part of the same DTLS association. Thus, there will be only one DTLS handshake even if there are multiple valid candidate pairs. Note that this may mean adjusting the endpoint IP addresses if the selected candidate pair shifts, just as if the DTLS packets were an ordinary media stream.

Specifically, I think we should say:

Note: DTLS-SRTP as defined in defines how DTLS interacts with ICE in Section 6.7.1. As indicated therein, implementations MUST treat all ICE candidate pairs associated with a single component as part of the same DTLS association. Thus, there will be only one DTLS handshake even if there are multiple valid candidate pairs.

alvestrand commented 9 years ago

Rephrased according to Justin's suggestion.