On Sun, 2013-02-24 at 22:26 -0500, Dave Thompson wrote: > TLS depends on TCP's reliable in-order transport. DTLS basically > re-implements enough of TCP to make TLS functionality work.
That isn't entirely true. Or at least it's misleadingly phrased. DTLS copes with packet loss and packet re-ordering. If your data are transported over DTLS you'd best make sure your application is expecting to cope with packet loss and re-ordering too. DTLS does its own retries of the handshake messages, and I suppose strictly speaking that *is* "enough of TCP to make DTLS functionality work". But you should be careful not to give the impression that DTLS will magically give you an in-order, guaranteed-delivery data stream. It won't; it's still a datagram protocol at heart. -- David Woodhouse Open Source Technology Centre david.woodho...@intel.com Intel Corporation
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