On Apr 2, 2009, at 8:28 AM, Hadriel Kaplan wrote:
p.s. and not all transits do change SDP, and some only change SDP in certain circumstances (like for transcoding).
Well we certainly can't expect transcoding to be compatible with e2e crypto.
So are there any legitimate use cases for requiring that the protocol supports MITM rewriting of SDP?
Having a transit provider that, for unknown reasons changes SDP is still not an adequate justification.
Perhaps is lots of calls started failing because they endpoints detect that a MITM attack on their signaling/media has occurred, and did so in a way that makes that failure evident to the MITM, then we'd see fewer MITMs making that mistake.
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