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

Christer Holmberg <christer.holmberg@ericsson.com> Thu, 05 March 2015 13:44 UTC

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From: Christer Holmberg <christer.holmberg@ericsson.com>
To: Iñaki Baz Castillo <ibc@aliax.net>, "Makaraju, Maridi Raju (Raju)" <Raju.Makaraju@alcatel-lucent.com>
Thread-Topic: [rtcweb] DTLS, DTLS-SRTP, and 5-tuples
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Date: Thu, 05 Mar 2015 13:44:46 +0000
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Cc: "rtcweb@ietf.org" <rtcweb@ietf.org>
Subject: Re: [rtcweb] DTLS, DTLS-SRTP, and 5-tuples
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Hi,

>Thanks. I remember now what it may happens:
>
>- A sends USE-CANDIDATE requests in parallel.
>- A receives the ok response from one of them.
>- A sends DTLS ClientHello.
>- A receives the ok response with higher priority from another pair.
>- A then continues sending media (maybe remaining DTLS stuff or RTP) for that pair.

Just to clarify: when you say "continues sending", you are NOT saying that A "starts over" by sending a new initial ClientHello on the new pair - instead A only switches to the other pair and continues with normal DTLS setup procedures?

...which means that both the client and server may receive DTLS messages, associated with the same DTLS connection setup, on different 5-tuples?

Regards,

Christer

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