Debugging DTLS / SRTP encrypted packets

[Adonis Peralta]

Is there a way to get the iOS SDK to print out the negotiated DTLS key
for debugging purposes? Then this could be used to decrypt the captured
rtp session and media packets? If not possible maybe someone can point
to where in the code the lines can be modified for a custom framework?

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Adonis

[Philipp Hancke]

you'll have to modify the native lib and print the keys around here:

  https://source.chromium.org/chromium/chromium/src/+/master:third_party/webrtc/pc/dtls_srtp_transport.cc;l=243;drc=44e5a3e4464147c35771e564fb211ac5bfff6a57?q=dtls_srtp

Alternatively you might try to use the method described in https://bugs.chromium.org/p/webrtc/issues/detail?id=10675

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