After looking very close at the output from my working and non-working log files, I believe this might be a side affect of something not directly ZRTP related. I have noticed that in my older working servers, I see " Auto Changing port from" twice. My freeswitch is not behind a NAT, but clearly my clients all are. In the latest pull, I only see this line once.

Going off the assumption that it isn't correctly translating the two clients connections, I tried a build where both the FS and the clients are all directly accessible with neither side behind any NAT. After doing this, my clients negotiate ZRTP with the same config I have been using.

Perhaps I should start a different subjet with a more precise problem statment, or can someone shine some light on this for me?

On Tue, Jul 22, 2014 at 1:01 PM, sangdrax8 <sangdrax8@gmail.com> wrote:

I have been using freeswitch with ZRTP successfully, and recently decided to do a pull from master. We haven't updated in a while, and I am testing how our current configurations work with the latest git pull. After the pull, my clients can't seem to establish a ZRTP session. Should I be doing this differently, or is there a new variable I need to be setting? I was under the impression that proxy_media would pass the media through unaltered, so I am a bit confused as to why this would change between versions.

Previous version:
(Version 1.5.8b git beb0673 2013-11-27 00:48:49Z 64bit)

In this version I would look for a zrtp-hash, and if present I would simply proxy_media.

<condition field="${endpoint_disposition}" expression="^(DELAYED NEGOTIATION)"/>
<condition field="${switch_r_sdp}" expression="(zrtp-hash)" break="never">

<action application="set" data="proxy_media=true"/>
</condition>

Current version:
(Version 1.5.14b git 5ea1729 2014-07-21 11:48:10Z 64bit)

Using the same code as above, my endpoints do not negotiate ZRTP. Eventually my clients issue a hangup, since I have them set to require ZRTP for testing purposes.

2014-07-22 16:44:10.891255 [INFO] switch_channel.c:3304 sofia/shared/sip:7kkklf@192.168.10.134:33588 Activating ZRTP passthru mode.
2014-07-22 16:44:10.891255 [NOTICE] sofia.c:7181 Channel [sofia/shared/sip:7kkklf@192.168.10.134:33588] has been answered

2014-07-22 16:44:10.891255 [INFO] switch_core_media.c:5152 Activating RTCP PORT 0
2014-07-22 16:44:10.891255 [INFO] switch_core_media.c:5333 Activating ZRTP PROXY MODE
2014-07-22 16:44:10.891255 [INFO] switch_core_media.c:5152 Activating RTCP PORT 0

2014-07-22 16:44:10.891255 [INFO] switch_core_media.c:5333 Activating ZRTP PROXY MODE
2014-07-22 16:44:10.891255 [NOTICE] switch_ivr_originate.c:3494 Channel [sofia/shared/cueyeo@testcust] has been answered

2014-07-22 16:44:11.331267 [INFO] switch_rtp.c:5622 Auto Changing port from 192.168.10.134:60402 to 1.1.1.1:50944

2014-07-22 16:44:16.391257 [NOTICE] sofia.c:947 Hangup sofia/shared/cueyeo@testcust [CS_EXECUTE] [NORMAL_CLEARING]

The only suggestions I can find on the wiki are at " http://wiki.freeswitch.org/wiki/ZRTP" which indicates that zrtp_secure_media and rtp-enable-zrtp needs to be set, which I have done.