[asterisk-dev] Asterisk 11.3.0-rc1 and srtp - white noise only

[Andrea Suisani]

Hi,

On 03/20/2013 04:26 PM, Martin Koenig wrote:
> Hi all,
>
> we have just updated our Asterisk 11 testbed from 11.2.1 to 11.3.0-rc1. Now we notice that
> all sRTP calls fail with “white noise” in the media channel phone > asterisk.

just to confirm that it happens also in our test env
(with almost the same configurations). Switching from
11.2.1 to 11-svn give us white noise on the callee side,
whereas with 11.2.1 everything works.

Andrea

> Example 1:
>
> Snom w/ srtp > asterisk > Yealink w/ srtp
>
> Both ends hear “white noise”
>
> Snom w/ srtp > asterisk > Gigaset w/o srtp
>
> Snom hears Gigaset, Gigaset hears white noise.
>
> There have been no other changes to the setup, SIP.conf  specifies
>
> transport=tls
>
> encryption=yes
>
> for the sRTP phones.
>
> Asterisk is linked to libsrtp 1.4.2.
>
> Here is the log (that imho looks good):
>
> [Mar 20 16:24:26] VERBOSE[13676][C-00000003] netsock2.c:   == Using SIP RTP CoS mark 5
>
> [Mar 20 16:24:26] DEBUG[13676][C-00000003] sip/sdp_crypto.c: Accepting crypto tag 1
>
> [Mar 20 16:24:26] DEBUG[13676][C-00000003] sip/sdp_crypto.c: Crypto line: a=crypto:1 AES_CM_128_HMAC_SHA1_80 inline:N9srofPYzJbWC6bj7zQojDIl8abAlO34r5biUS38
>
> [Mar 20 16:24:26] VERBOSE[13700][C-00000003] pbx.c:     -- Executing [5 at local:1] Dial("SIP/snom360.2-00000006", "sip/1941.ylnkt32") in new stack
>
> [Mar 20 16:24:26] VERBOSE[13700][C-00000003] netsock2.c:   == Using SIP RTP CoS mark 5
>
> [Mar 20 16:24:26] DEBUG[13700][C-00000003] sip/sdp_crypto.c: Crypto line: a=crypto:1 AES_CM_128_HMAC_SHA1_80 inline:XiQI1ThhND6k+DNhlIeEXGzK2LY5/NF1y0K+YDfL
>
> [Mar 20 16:24:26] VERBOSE[13700][C-00000003] app_dial.c:     -- Called sip/1941.ylnkt32
>
> [Mar 20 16:24:27] VERBOSE[13700][C-00000003] app_dial.c:     -- SIP/1941.ylnkt32-00000007 is ringing
>
> [Mar 20 16:24:35] DEBUG[13681][C-00000003] sip/sdp_crypto.c: Accepting crypto tag 1
>
> [Mar 20 16:24:35] DEBUG[13681][C-00000003] sip/sdp_crypto.c: Crypto line: a=crypto:1 AES_CM_128_HMAC_SHA1_80 inline:XiQI1ThhND6k+DNhlIeEXGzK2LY5/NF1y0K+YDfL
>
> [Mar 20 16:24:35] VERBOSE[13700][C-00000003] app_dial.c:     -- SIP/1941.ylnkt32-00000007 answered SIP/snom360.2-00000006
>
> [Mar 20 16:24:35] DEBUG[13700][C-00000003] sip/sdp_crypto.c: Crypto line: a=crypto:1 AES_CM_128_HMAC_SHA1_80 inline:N9srofPYzJbWC6bj7zQojDIl8abAlO34r5biUS38
>
> [Mar 20 16:24:35] VERBOSE[13700][C-00000003] res_rtp_asterisk.c:
>
> Is this something that is known already, or has happened to someone else? If not, I’d move forward with a bug report.
>
> Many thanks and best regards,
>
> Martin