captures/voip: add webrtc-freeswitch.pcapng

Master keys (for TCP[port=8082]/SSL/WebSocket/JSON and for DTLS-SRTP)
are present in the capture file comments.

Created by starting Chromium 40.0.2214.111 with a new profile, disabling
any settings that could cause network interference (also set
about:blank as home page). Visit
https://webrtc.freeswitch.org/verto/index.html to load everything in
cache.

Then restart with the sandbox disabled to avoid the suid sandbox (which
interferes with getting SSL keys from DTLS-SRTP) and start the actual
capture.

Command to launch the browser:

    SSLKEYLOGFILE=premaster.txt \
    chromium --user-data-dir=/tmp/cr \
        --disable-component-extensions-with-background-pages \
        --disable-web-resource --disable-background-networking \
        --disable-sandbox --single-process

Analyse with:

    capinfos -k webrtc-freeswitch.pcapng |
        grep -Po 'CLIENT_RANDOM \S+ \S+' > premaster.txt
    wireshark -r webrtc-freeswitch.pcapng \
        -o ssl.keylog_file:premaster.txt \
        -o dtls.keylog_file:premaster.txt \
        -o http.ssl.port:8082

1 files changed, 0 insertions, 0 deletions

diff --git a/captures/voip/webrtc-freeswitch.pcapng b/captures/voip/webrtc-freeswitch.pcapng
new file mode 100644
index 0000000..6e46788
--- /dev/null
+++ b/captures/voip/webrtc-freeswitch.pcapng