[OpenSIPS-Users] ERROR:nathelper:send_rtpp_command: can't send command to a RTP proxy

Arjun Shankar K S arjun_ks at kalycito.com
Tue Jun 26 14:18:40 CEST 2012 

Hi Razvan, 

Thank you very much for your response. 

Yes the RTP Proxy is running and is listening in the 7890 port as shown below with netstat, 

r oot# netstat -aunt 
Active Internet connections (servers and established) 
Proto Recv-Q Send-Q Local Address Foreign Address State 
tcp 0 0 my_public_ip:5060 0.0.0.0:* LISTEN 
tcp 0 0 127.0.0.1:5060 0.0.0.0:* LISTEN 
tcp 0 0 127.0.0.1:3306 0.0.0.0:* LISTEN 
tcp 0 0 0.0.0.0:7222 0.0.0.0:* LISTEN 
ttcp6 0 0 :::7222 :::* LISTEN 
udp 0 0 127.0.0.1:50432 127.0.0.1:7890 ESTABLISHED 
udp 0 0 127.0.0.1:49027 127.0.0.1:7890 ESTABLISHED 
udp 0 0 127.0.0.1:33425 127.0.0.1:7890 ESTABLISHED 
udp 0 0 127.0.0.1:54295 127.0.0.1:7890 ESTABLISHED 
udp 0 0 127.0.0.1:34456 127.0.0.1:7890 ESTABLISHED 
udp 0 0 127.0.0.1:41129 127.0.0.1:7890 ESTABLISHED 
udp 0 0 127.0.0.1:44714 127.0.0.1:7890 ESTABLISHED 
udp 0 0 127.0.0.1:60092 127.0.0.1:7890 ESTABLISHED 
udp 0 0 220.225.134.9:5060 0.0.0.0:* 
udp 0 0 127.0.0.1:5060 0.0.0.0:* 
udp 0 0 127.0.0.1:55751 127.0.0.1:7890 ESTABLISHED 
udp 0 0 127.0.0.1:55239 127.0.0.1:7890 ESTABLISHED 
udp 0 0 127.0.0.1:7890 0.0.0.0:* 
udp 0 0 127.0.0.1:43352 127.0.0.1:7890 ESTABLISHED 
udp 0 0 127.0.0.1:33766 127.0.0.1:7890 ESTABLISHED 
udp 0 0 127.0.0.1:50161 127.0.0.1:7890 ESTABLISHED 
udp 0 0 127.0.0.1:58748 127.0.0.1:7890 ESTABLISHED 

Please find below the RTP Proxy log when I start the opensips with RTP Proxy already running in the background. 

Jun 26 17:25:15 pbx2 opensips: WARNING:core:fix_socket_list: could not rev. resolve 220.225.134.9 
Jun 26 17:25:15 pbx2 opensips: WARNING:core:fix_socket_list: could not rev. resolve 220.225.134.9 
Jun 26 17:25:15 pbx2 opensips: INFO:core:init_tcp: using epoll_lt as the TCP io watch method (auto detected) 
Jun 26 17:25:15 pbx2 /usr/local/sbin/opensips[4050]: NOTICE:core:main: version: opensips 1.6.1-notls (x86_64/linux) 
Jun 26 17:25:15 pbx2 /usr/local/sbin/opensips[4050]: INFO:core:main: using 128 Mb shared memory 
Jun 26 17:25:15 pbx2 /usr/local/sbin/opensips[4050]: INFO:core:main: using 1 Mb private memory per process 
Jun 26 17:25:15 pbx2 /usr/local/sbin/opensips[4050]: NOTICE:signaling:mod_init: initializing module ... 
Jun 26 17:25:15 pbx2 /usr/local/sbin/opensips[4050]: INFO:sl:mod_init: Initializing StateLess engine 
Jun 26 17:25:15 pbx2 /usr/local/sbin/opensips[4050]: INFO:tm:mod_init: TM - initializing... 
Jun 26 17:25:15 pbx2 /usr/local/sbin/opensips[4050]: INFO:maxfwd:mod_init: initializing... 
Jun 26 17:25:15 pbx2 /usr/local/sbin/opensips[4050]: INFO:usrloc:ul_init_locks: locks array size 512 
Jun 26 17:25:15 pbx2 /usr/local/sbin/opensips[4050]: INFO:registrar:mod_init: initializing... 
Jun 26 17:25:15 pbx2 /usr/local/sbin/opensips[4050]: INFO:textops:mod_init: initializing... 
Jun 26 17:25:15 pbx2 /usr/local/sbin/opensips[4050]: INFO:xlog:mod_init: initializing... 
Jun 26 17:25:15 pbx2 /usr/local/sbin/opensips[4050]: INFO:acc:mod_init: initializing... 
Jun 26 17:25:15 pbx2 /usr/local/sbin/opensips[4050]: INFO:auth:mod_init: initializing... 
Jun 26 17:25:15 pbx2 /usr/local/sbin/opensips[4050]: INFO:auth_db:mod_init: initializing... 
Jun 26 17:25:15 pbx2 /usr/local/sbin/opensips[4050]: INFO:core:probe_max_receive_buffer: using a UDP receive buffer of 255 kb 
Jun 26 17:25:15 pbx2 /usr/local/sbin/opensips[4050]: INFO:core:probe_max_receive_buffer: using a UDP receive buffer of 255 kb 
Jun 26 17:25:15 pbx2 rtpproxy[2258]: DBUG:handle_command: received command "4057_0 V" 
Jun 26 17:25:15 pbx2 rtpproxy[2258]: DBUG:doreply: sending reply "4057_0 20040107#012" 
Jun 26 17:25:15 pbx2 rtpproxy[2258]: DBUG:handle_command: received command "4057_1 VF 20050322" 
Jun 26 17:25:15 pbx2 rtpproxy[2258]: DBUG:doreply: sending reply "4057_1 1#012" 
Jun 26 17:25:15 pbx2 /usr/local/sbin/opensips[4057]: INFO:nathelper:rtpp_test: rtp proxy <udp:127.0.0.1:7890> found, support for it enabled 
Jun 26 17:25:15 pbx2 rtpproxy[2258]: DBUG:handle_command: received command "4057_2 VF 20071116" 
Jun 26 17:25:15 pbx2 rtpproxy[2258]: DBUG:doreply: sending reply "4057_2 1#012" 
(.....Same as above.....) 
Jun 26 17:25:15 pbx2 /usr/local/sbin/opensips[4055]: INFO:nathelper:rtpp_test: rtp proxy <udp:127.0.0.1:7890> found, support for it enabled 
Jun 26 17:25:15 pbx2 /usr/local/sbin/opensips[4053]: INFO:nathelper:rtpp_test: rtp proxy <udp:127.0.0.1:7890> found, support for it enabled 
Jun 26 17:25:15 pbx2 /usr/local/sbin/opensips[4061]: INFO:nathelper:rtpp_test: rtp proxy <udp:127.0.0.1:7890> found, support for it enabled 
Jun 26 17:25:15 pbx2 /usr/local/sbin/opensips[4063]: INFO:nathelper:rtpp_test: rtp proxy <udp:127.0.0.1:7890> found, support for it enabled 
Jun 26 17:25:15 pbx2 rtpproxy[2258]: DBUG:doreply: sending reply "4065_1 1#012" 
Jun 26 17:25:15 pbx2 rtpproxy[2258]: DBUG:handle_command: received command "4052_1 VF 20050322" 
(.....Same as above.....) 
Jun 26 17:25:15 pbx2 rtpproxy[2258]: DBUG:doreply: sending reply "4060_0 20040107#012" 
Jun 26 17:25:15 pbx2 rtpproxy[2258]: DBUG:handle_command: received command "4058_0 V" 
Jun 26 17:25:15 pbx2 /usr/local/sbin/opensips[4065]: INFO:nathelper:rtpp_test: rtp proxy <udp:127.0.0.1:7890> found, support for it enabled 
Jun 26 17:25:15 pbx2 /usr/local/sbin/opensips[4052]: INFO:nathelper:rtpp_test: rtp proxy <udp:127.0.0.1:7890> found, support for it enabled 
Jun 26 17:25:15 pbx2 rtpproxy[2258]: DBUG:doreply: sending reply "4058_0 20040107#012" 
Jun 26 17:25:15 pbx2 rtpproxy[2258]: DBUG:handle_command: received command "4056_0 V" 
(.....Same as above.....) 
Jun 26 17:25:15 pbx2 rtpproxy[2258]: DBUG:doreply: sending reply "4065_2 1#012" 
Jun 26 17:25:15 pbx2 rtpproxy[2258]: DBUG:handle_command: received command "4052_2 VF 20071116" 
Jun 26 17:25:15 pbx2 /usr/local/sbin/opensips[4060]: INFO:nathelper:rtpp_test: rtp proxy <udp:127.0.0.1:7890> found, support for it enabled 
Jun 26 17:25:15 pbx2 /usr/local/sbin/opensips[4064]: INFO:nathelper:rtpp_test: rtp proxy <udp:127.0.0.1:7890> found, support for it enabled 
Jun 26 17:25:15 pbx2 /usr/local/sbin/opensips[4066]: INFO:nathelper:rtpp_test: rtp proxy <udp:127.0.0.1:7890> found, support for it enabled 
Jun 26 17:25:15 pbx2 rtpproxy[2258]: DBUG:doreply: sending reply "4052_2 1#012" 
Jun 26 17:25:15 pbx2 rtpproxy[2258]: DBUG:handle_command: received command "4058_1 VF 20050322" 
(.....Same as above.....) 
Jun 26 17:25:15 pbx2 rtpproxy[2258]: DBUG:doreply: sending reply "4055_3 1#012" 
Jun 26 17:25:15 pbx2 rtpproxy[2258]: DBUG:handle_command: received command "4063_3 VF 20081102" 
Jun 26 17:25:15 pbx2 /usr/local/sbin/opensips[4058]: INFO:nathelper:rtpp_test: rtp proxy <udp:127.0.0.1:7890> found, support for it enabled 
Jun 26 17:25:15 pbx2 rtpproxy[2258]: DBUG:doreply: sending reply "4063_3 1#012" 
Jun 26 17:25:15 pbx2 rtpproxy[2258]: DBUG:handle_command: received command "4065_3 VF 20081102" 

Can you please let me know where is the mistake happening. Any help is deeply appreciated. 

Thanks, 
Arjun 

----- Original Message ----- 
From: "Răzvan Crainea" <razvan at opensips.org> 
To: users at lists.opensips.org 
Sent: Tuesday, June 26, 2012 1:21:11 PM GMT +05:30 Chennai, Kolkata, Mumbai, New Delhi 
Subject: Re: [OpenSIPS-Users] ERROR:nathelper:send_rtpp_command: can't send command to a RTP proxy 


Hello, Arjun! 

Are you sure rtpproxy is running and listening on that port? Have you checked rtpproxy log for errors? 

Regards, 
Razvan Crainea
OpenSIPS Core Developer http://www.opensips-solutions.com On 06/25/2012 05:58 PM, Arjun Shankar K S wrote: 


Hi All, 

Greeting to All!! 

I have opensips and rtp proxy in the same machine with a public IP. When I start the opensips with rtp proxy I get the below error. 

/usr/local/sbin/opensips[1691]: WARNING:nathelper:rtpp_test: can't get version of the RTP proxy 
/usr/local/sbin/opensips[1691]: WARNING:nathelper:rtpp_test: support for RTP proxy <udp:127.0.0.1:7890> has been disabled temporarily 
/usr/local/sbin/opensips[1683]: ERROR:nathelper:send_rtpp_command: can't send command to a RTP proxy 
/usr/local/sbin/opensips[1683]: ERROR:nathelper:send_rtpp_command: proxy <udp:127.0.0.1:7890> does not respond, disable it 

I started the rtp proxy with the below command, 

./rtpproxy -l my_public_ip -s udp:127.0.0.1:7890 -F 

My opensip.cfg file has the following additions for NAT Traversal, 

#------Nat Params------------- 
modparam("usrloc","nat_bflag", 6) 
modparam("nathelper","rtpproxy_sock", "udp:127.0.0.1:7890") 
modparam("nathelper","natping_interval", 30) 
modparam("nathelper","ping_nated_only", 0) 
modparam("nathelper","sipping_bflag", 7) 
modparam("nathelper","sipping_from", "sip:pinger at PROXY_IP") 
modparam("registrar","received_avp", "$avp(i:42)") 
modparam("nathelper","received_avp", "$avp(i:42)") 

Please let me know where is the mistake. Any help is deeply appreciated. 

Thanks, 
Arjun 






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