[Freeswitch-users] Crypto Problems with NDLB-allow-crypto-in-avp

[Nicola von Thadden]

Hi,

does anyone have an idea why freeswitch behaves in that way?

I also found something weird happening here.
The debug output what freeswitch wanted to send looks okay:

2015-08-22 17:21:35.517845 [DEBUG] mod_sofia.c:780 Local SDP 
sofia/external/00491723764703 at 92.222.104.42:
v=0
o=FreeSWITCH 1440225805 1440225807 IN IP4 46.38.244.168
s=FreeSWITCH
c=IN IP4 46.38.244.168
t=0 0
m=audio 31090 RTP/SAVP 8 101
a=rtpmap:8 PCMA/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-16
a=ptime:20
a=sendrecv
a=crypto:1 AES_CM_128_HMAC_SHA1_32 
inline:v7PQBnE2o2KtZSz/PvsawsCZ4EA5QgDPcySCf01A


But the sofia siptrace tells that something else has been sent, with no 
codec:

send 901 bytes to udp/[92.222.104.42]:5060 at 17:21:35.523593:
------------------------------------------------------------------------
    SIP/2.0 200 OK
    Via: SIP/2.0/UDP 92.222.104.42:5060;rport=5060;branch=z9hG4bK1981668796
    From: "00491723764703" <sip:00491723764703 at 92.222.104.42>;tag=46810284
    To: 
<sip:gw+eventphone-5849 at 46.38.244.168:5080;transport=udp;gw=eventphone-5849>;tag=crBj8pNgK80KH
    Call-ID: 1724156770 at 92.222.104.42
    CSeq: 1223 INVITE
    Contact: <sip:gw+eventphone-5849 at 46.38.244.168:5080;transport=udp>
    User-Agent: FreeSWITCH-mod_sofia/1.4.20-34~64bit
    Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, INFO, UPDATE, 
REGISTER, REFER, NOTIFY
    Supported: timer, path, replaces
    Allow-Events: talk, hold, conference, refer
    Content-Type: application/sdp
    Content-Disposition: session
    Content-Length: 129
    Remote-Party-ID: "5849" 
<sip:5849 at 46.38.244.168>;party=calling;privacy=off;screen=no

    v=0
    o=FreeSWITCH 1440225805 1440225806 IN IP4 46.38.244.168
    s=FreeSWITCH
    c=IN IP4 46.38.244.168
    t=0 0
    m=audio 0 RTP/AVP 19
------------------------------------------------------------------------


I don't think the lines inbetween these two messages contain anything 
important but here they are:

nua.c:879 nua_respond() nua: nua_respond: entering
nua_stack.c:573 nua_stack_signal() nua(0x7f5fc04426a0): recv signal 
r_respond 200 OK
nua_params.c:480 nua_stack_set_params() nua: nua_stack_set_params: entering
soa.c:403 soa_set_params() soa_set_params(static::0x252ae00, ...) called
soa.c:1052 soa_set_user_sdp() soa_set_user_sdp(static::0x252ae00, (nil), 
0x7f5fc05f0be0, -1) called
nua_session.c:2320 nua_invite_server_respond() nua: 
nua_invite_server_respond: entering
soa.c:1270 soa_get_local_sdp() soa_get_local_sdp(static::0x252ae00, 
[(nil)], [0x7f5fbef62bb8], [0x7f5fbef62bb4]) called
tport.c:3257 tport_tsend() tport_tsend(0x26b02e0) tpn = 
UDP/92.222.104.42:5060
tport.c:4046 tport_resolve() tport_resolve addrinfo = 92.222.104.42:5060
tport.c:4680 tport_by_addrinfo() tport_by_addrinfo(0x26b02e0): not found 
by name UDP/92.222.104.42:5060
tport.c:3594 tport_vsend() tport_vsend(0x26b02e0): 901 bytes of 901 to 
udp/92.222.104.42:5060
tport.c:3492 tport_send_msg() tport_vsend returned 901

Any idea why the SDP is sent out wrong and how to debug that?

Thanks
Nico