[Serusers] Re: RTPProxy fails only for Private to Public communication

Vivienne Curran vivcurran at yahoo.co.uk
Wed Apr 6 16:12:18 CEST 2005


Just as an extra : I have a sniff of the message for when a public client (2092)rings a private client (2093)included at the bottom of this email. I cant see anything wrong with them but maybe it will shed more light on the matter.

Vivienne Curran <vivcurran at yahoo.co.uk> wrote:I changed the line modparam("nathelper", "rtpproxy_sock", "/var/run/rtpproxy.sock") to modparam("nathelper", "rtpproxy_sock", "udp:localhost:22222") and started the rtpproxy as ./rtpproxy -s udp from the relevant directory and this resulted in a series of "rtpp_command: no response from rtpproxy" and rtpproxy temporarily disabled" errors. If I return to the original modparam and start it as ./rtpproxy then it works but like I said when the private client rings the public client, I get "ERROR: send_rtpp_command: cant read reply from a RTP Proxy".
 
Any further ideas? Has anyone on the mailing list experienced this? I am using the script given in the onsip getting started doc for 0.9.0. but am using ser 0.8.14.
 
BR,
Vivienne


"Greger V. Teigre" <greger at teigre.com> wrote:
See inline.

> Thank you for that Greger. I have altered my script so that it
> exactly mimics the one in the onsip document besides the has_totag
> and fix_nated register. All is good when I ring from a private phone
> to a public phone i.e. the audio is very clear and the following
> messages are in /var/log.    
> 
> ERROR: extract_body: message body has length zero
> ERROR: force_rtp_proxy2: cant extract body from the message.
> 
> I assume this is because of the 200 OK to a register message where
> theres no sdp?? Is this correct? 

That's correct.  You will find code in the example configs where we test for an empty body before calling force_rtp_proxy.

> However when I try to phone from public into private I get:
> 
> ERROR: send_rtpp_command: cant read reply from a RTP Proxy.
> 
> I find this confusing because I know the rtpproxy is working.

This means that rtpproxy is not responding to a particular message. I have heard some people have had problems with the socket based communication. I only use UDP. This is what you do to set up udp (22222 is default port):
modparam("nathelper", "rtpproxy_sock", "udp:localhost:22222")
rtpproxy must be started with -s udp:*
g-)

> BR
> Vivienne.
> 
> "Greger V. Teigre" <greger at teigre.com> wrote:
> Yes, you can use fix_nated_contact instead. It is not entirely
> RFC-compliant, but that's what you have in 0.8.14. 
> The has_totag() only tests to see if the INVITE has a To header,
> which means that it is in-dialog and thus is a re-INVITE.  An INVITE
> will normally not have loose routing unless you have another SIP
> proxy forwarding an INVITE to you (in which case you should assume
> that the other proxy handles NAT and thus not trigger NAT-related
> code).  You can safely remove the has_totag() if you use
> force_rtp_proxy("l")      
> g-)
> 
> ---- Original Message ----
> From: Vivienne Curran
> To: Greger V. Teigre ; serusers at lists.iptel.org
> Sent: Tuesday, April 05, 2005 02:25 PM
> Subject: Re: [Serusers] Contact Header and SDP not rewritten
> 
>> Greger,
>> 
>> Since fix_nated_register does not exist with 0.8.14, will
>> fix_nated_contact do instead? Also if I am leaving out the
>> has_totag() at the start of the script, will this greatly effect its
>> functionality?
>> 
>> Thank you,
>> Vivienne


Send instant messages to your online friends http://uk.messenger.yahoo.com 
U 157.190.74.151:5060 -> 84.203.148.146:5060

  INVITE sip:2093 at 84.203.148.146 SIP/2.0..Via: SIP/2.0/UDP 157.190.74.151;bra

  nch=z9hG4bKcd17ddd1b59ead49..From: "2092" <sip:2092 at 84.203.148.146>;tag=aed

  c22bd5a3b510c..To: <sip:2093 at 84.203.148.146>..Contact: <sip:2092 at 157.190.74

  .151>..Supported: replaces..Call-ID: 8ffc2d18b21870b3 at 157.190.74.151..CSeq:

   64735 INVITE..User-Agent: Grandstream BT100 1.0.5.18..Max-Forwards: 70..Al

  low: INVITE,ACK,CANCEL,BYE,NOTIFY,REFER,OPTIONS,INFO,SUBSCRIBE..Content-Typ

  e: application/sdp..Content-Length: 426....v=0..o=2092 8000 0 IN IP4 157.19

  0.74.151..s=SIP Call..c=IN IP4 157.190.74.151..t=0 0..m=audio 5004 RTP/AVP

  0 8 4 18 2 15 99 9 101..a=sendrecv..a=rtpmap:0 PCMU/8000/3..a=rtpmap:8 PCMA

  /8000/3..a=rtpmap:4 G723/8000/3..a=rtpmap:18 G729/8000/3..a=rtpmap:2 G726-3

  2/8000/3..a=rtpmap:15 G728/8000/3..a=rtpmap:99 iLBC/8000/3..a=fmtp:99 mode=

  20..a=rtpmap:9 G722/8000/3..a=ptime:20..a=rtpmap:101 telephone-event/8000/3

  ..a=fmtp:101 0-11..

 

U 84.203.148.146:5060 -> 157.190.74.151:5060

  SIP/2.0 100 trying -- your call is important to us..Via: SIP/2.0/UDP 157.19

  0.74.151;branch=z9hG4bKcd17ddd1b59ead49;rport=5060..From: "2092" <sip:2092@

  84.203.148.146>;tag=aedc22bd5a3b510c..To: <sip:2093 at 84.203.148.146>..Call-I

  D: 8ffc2d18b21870b3 at 157.190.74.151..CSeq: 64735 INVITE..Server: Sip EXpress

   router (0.8.14 (i386/linux))..Content-Length: 0..Warning: 392 84.203.148.1

  46:5060 "Noisy feedback tells:  pid=8990 req_src_ip=157.190.74.151 req_src_

  port=5060 in_uri=sip:2093 at 84.203.148.146 out_uri=sip:2093 at 84.203.148.14:506

  0 via_cnt==1"....

 

U 84.203.148.146:5060 -> 84.203.148.14:5060

  INVITE sip:2093 at 84.203.148.14:5060 SIP/2.0..Via: SIP/2.0/UDP 84.203.148.146

  ;branch=z9hG4bKf51e.b169be72.0..Via: SIP/2.0/UDP 157.190.74.151;rport=5060;

  branch=z9hG4bKcd17ddd1b59ead49..From: "2092" <sip:2092 at 84.203.148.146>;tag=

  aedc22bd5a3b510c..To: <sip:2093 at 84.203.148.146>..Contact: <sip:2092 at 157.190

  .74.151:5060>..Supported: replaces..Call-ID: 8ffc2d18b21870b3 at 157.190.74.15

  1..CSeq: 64735 INVITE..User-Agent: Grandstream BT100 1.0.5.18..Max-Forwards

  : 69..Allow: INVITE,ACK,CANCEL,BYE,NOTIFY,REFER,OPTIONS,INFO,SUBSCRIBE..Con

  tent-Type: application/sdp..Content-Length: 445....v=0..o=2092 8000 0 IN IP

  4 157.190.74.151..s=SIP Call..c=IN IP4 84.203.148.146..t=0 0..m=audio 35014

   RTP/AVP 0 8 4 18 2 15 99 9 101..a=sendrecv..a=rtpmap:0 PCMU/8000/3..a=rtpm

  ap:8 PCMA/8000/3..a=rtpmap:4 G723/8000/3..a=rtpmap:18 G729/8000/3..a=rtpmap

  :2 G726-32/8000/3..a=rtpmap:15 G728/8000/3..a=rtpmap:99 iLBC/8000/3..a=fmtp

  :99 mode=20..a=rtpmap:9 G722/8000/3..a=ptime:20..a=rtpmap:101 telephone-eve

  nt/8000/3..a=fmtp:101 0-11..a=nortpproxy:yes..

 

U 84.203.148.14:5060 -> 84.203.148.146:5060

  SIP/2.0 100 Trying..Via: SIP/2.0/UDP 84.203.148.146;branch=z9hG4bKf51e.b169

  be72.0..Via: SIP/2.0/UDP 157.190.74.151;rport=5060;branch=z9hG4bKcd17ddd1b5

  9ead49..From: "2092" <sip:2092 at 84.203.148.146>;tag=aedc22bd5a3b510c..To: <s

  ip:2093 at 84.203.148.146>..Call-ID: 8ffc2d18b21870b3 at 157.190.74.151..CSeq: 64

  735 INVITE..User-Agent: Grandstream BT100 1.0.5.18..Content-Length: 0....

 

U 84.203.148.14:5060 -> 84.203.148.146:5060

  SIP/2.0 180 Ringing..Via: SIP/2.0/UDP 84.203.148.146;branch=z9hG4bKf51e.b16

  9be72.0..Via: SIP/2.0/UDP 157.190.74.151;rport=5060;branch=z9hG4bKcd17ddd1b

  59ead49..From: "2092" <sip:2092 at 84.203.148.146>;tag=aedc22bd5a3b510c..To: <

  sip:2093 at 84.203.148.146>;tag=acd725e00242a605..Call-ID: 8ffc2d18b21870b3 at 15

  7.190.74.151..CSeq: 64735 INVITE..User-Agent: Grandstream BT100 1.0.5.18..C

  ontent-Length: 0....

 

U 84.203.148.146:5060 -> 157.190.74.151:5060

  SIP/2.0 180 Ringing..Via: SIP/2.0/UDP 157.190.74.151;rport=5060;branch=z9hG

  4bKcd17ddd1b59ead49..From: "2092" <sip:2092 at 84.203.148.146>;tag=aedc22bd5a3

  b510c..To: <sip:2093 at 84.203.148.146>;tag=acd725e00242a605..Call-ID: 8ffc2d1

  8b21870b3 at 157.190.74.151..CSeq: 64735 INVITE..User-Agent: Grandstream BT100

   1.0.5.18..Content-Length: 0....

 

U 84.203.148.14:5060 -> 84.203.148.146:5060

  SIP/2.0 200 OK..Via: SIP/2.0/UDP 84.203.148.146;branch=z9hG4bKf51e.b169be72

  .0..Via: SIP/2.0/UDP 157.190.74.151;rport=5060;branch=z9hG4bKcd17ddd1b59ead

  49..From: "2092" <sip:2092 at 84.203.148.146>;tag=aedc22bd5a3b510c..To: <sip:2

  093 at 84.203.148.146>;tag=acd725e00242a605..Call-ID: 8ffc2d18b21870b3 at 157.190

  .74.151..CSeq: 64735 INVITE..User-Agent: Grandstream BT100 1.0.5.18..Contac

  t: <sip:2093 at 172.16.3.31>..Allow: INVITE,ACK,CANCEL,BYE,NOTIFY,REFER,OPTION

  S,INFO,SUBSCRIBE..Content-Type: application/sdp..Supported: replaces..Conte

  nt-Length: 152....v=0..o=2093 8000 0 IN IP4 172.16.3.31..s=SIP Call..c=IN I

  P4 172.16.3.31..t=0 0..m=audio 5004 RTP/AVP 0..a=sendrecv..a=rtpmap:0 PCMU/

  8000/3..a=ptime:20..

 

U 84.203.148.146:5060 -> 157.190.74.151:5060

  SIP/2.0 200 OK..Via: SIP/2.0/UDP 157.190.74.151;rport=5060;branch=z9hG4bKcd

  17ddd1b59ead49..From: "2092" <sip:2092 at 84.203.148.146>;tag=aedc22bd5a3b510c

  ..To: <sip:2093 at 84.203.148.146>;tag=acd725e00242a605..Call-ID: 8ffc2d18b218

  70b3 at 157.190.74.151..CSeq: 64735 INVITE..User-Agent: Grandstream BT100 1.0.

  5.18..Contact: <sip:2093 at 172.16.3.31>..Allow: INVITE,ACK,CANCEL,BYE,NOTIFY,

  REFER,OPTIONS,INFO,SUBSCRIBE..Content-Type: application/sdp..Supported: rep

  laces..Content-Length: 174....v=0..o=2093 8000 0 IN IP4 172.16.3.31..s=SIP

  Call..c=IN IP4 84.203.148.146..t=0 0..m=audio 35016 RTP/AVP 0..a=sendrecv..

  a=rtpmap:0 PCMU/8000/3..a=ptime:20..a=nortpproxy:yes..

 

U 84.203.148.14:5060 -> 84.203.148.146:5060

  SIP/2.0 200 OK..Via: SIP/2.0/UDP 84.203.148.146;branch=z9hG4bKf51e.b169be72

  .0..Via: SIP/2.0/UDP 157.190.74.151;rport=5060;branch=z9hG4bKcd17ddd1b59ead

  49..From: "2092" <sip:2092 at 84.203.148.146>;tag=aedc22bd5a3b510c..To: <sip:2

  093 at 84.203.148.146>;tag=acd725e00242a605..Call-ID: 8ffc2d18b21870b3 at 157.190

  .74.151..CSeq: 64735 INVITE..User-Agent: Grandstream BT100 1.0.5.18..Contac

  t: <sip:2093 at 172.16.3.31>..Allow: INVITE,ACK,CANCEL,BYE,NOTIFY,REFER,OPTION

  S,INFO,SUBSCRIBE..Content-Type: application/sdp..Supported: replaces..Conte

  nt-Length: 152....v=0..o=2093 8000 1 IN IP4 172.16.3.31..s=SIP Call..c=IN I

  P4 172.16.3.31..t=0 0..m=audio 5004 RTP/AVP 0..a=sendrecv..a=rtpmap:0 PCMU/

  8000/3..a=ptime:20..

 

U 84.203.148.146:5060 -> 157.190.74.151:5060

  SIP/2.0 200 OK..Via: SIP/2.0/UDP 157.190.74.151;rport=5060;branch=z9hG4bKcd

  17ddd1b59ead49..From: "2092" <sip:2092 at 84.203.148.146>;tag=aedc22bd5a3b510c

  ..To: <sip:2093 at 84.203.148.146>;tag=acd725e00242a605..Call-ID: 8ffc2d18b218

  70b3 at 157.190.74.151..CSeq: 64735 INVITE..User-Agent: Grandstream BT100 1.0.

  5.18..Contact: <sip:2093 at 172.16.3.31>..Allow: INVITE,ACK,CANCEL,BYE,NOTIFY,

  REFER,OPTIONS,INFO,SUBSCRIBE..Content-Type: application/sdp..Supported: rep

  laces..Content-Length: 174....v=0..o=2093 8000 1 IN IP4 172.16.3.31..s=SIP

  Call..c=IN IP4 84.203.148.146..t=0 0..m=audio 35016 RTP/AVP 0..a=sendrecv..

  a=rtpmap:0 PCMU/8000/3..a=ptime:20..a=nortpproxy:yes..

 

U 84.203.148.14:5060 -> 84.203.148.146:5060

  SIP/2.0 200 OK..Via: SIP/2.0/UDP 84.203.148.146;branch=z9hG4bKf51e.b169be72

  .0..Via: SIP/2.0/UDP 157.190.74.151;rport=5060;branch=z9hG4bKcd17ddd1b59ead

  49..From: "2092" <sip:2092 at 84.203.148.146>;tag=aedc22bd5a3b510c..To: <sip:2

  093 at 84.203.148.146>;tag=acd725e00242a605..Call-ID: 8ffc2d18b21870b3 at 157.190

  .74.151..CSeq: 64735 INVITE..User-Agent: Grandstream BT100 1.0.5.18..Contac

  t: <sip:2093 at 172.16.3.31>..Allow: INVITE,ACK,CANCEL,BYE,NOTIFY,REFER,OPTION

  S,INFO,SUBSCRIBE..Content-Type: application/sdp..Supported: replaces..Conte

  nt-Length: 152....v=0..o=2093 8000 2 IN IP4 172.16.3.31..s=SIP Call..c=IN I

  P4 172.16.3.31..t=0 0..m=audio 5004 RTP/AVP 0..a=sendrecv..a=rtpmap:0 PCMU/

  8000/3..a=ptime:20..

 

U 84.203.148.146:5060 -> 157.190.74.151:5060

  SIP/2.0 200 OK..Via: SIP/2.0/UDP 157.190.74.151;rport=5060;branch=z9hG4bKcd

  17ddd1b59ead49..From: "2092" <sip:2092 at 84.203.148.146>;tag=aedc22bd5a3b510c

  ..To: <sip:2093 at 84.203.148.146>;tag=acd725e00242a605..Call-ID: 8ffc2d18b218

  70b3 at 157.190.74.151..CSeq: 64735 INVITE..User-Agent: Grandstream BT100 1.0.

  5.18..Contact: <sip:2093 at 172.16.3.31>..Allow: INVITE,ACK,CANCEL,BYE,NOTIFY,

  REFER,OPTIONS,INFO,SUBSCRIBE..Content-Type: application/sdp..Supported: rep

  laces..Content-Length: 174....v=0..o=2093 8000 2 IN IP4 172.16.3.31..s=SIP

  Call..c=IN IP4 84.203.148.146..t=0 0..m=audio 35016 RTP/AVP 0..a=sendrecv..

  a=rtpmap:0 PCMU/8000/3..a=ptime:20..a=nortpproxy:yes..

 


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