Hi I?aki,
At first, I repied the PRACK without Route header but contian the to tag. I added the Route header after receive your opinion. But also failed. I attached my SIP message, could you please take a look them and give me some suggestion? Thank you!
Best regards, Steven Wu
UDP Data send to: 10.57.39.120:5060 INVITE sip:1141@10.57.39.120 SIP/2.0 Via: SIP/2.0/UDP 10.57.39.33:5060 From: sip:6846@10.57.39.120;tag=032baj647 To: sip:1141@10.57.39.120 Call-ID: asdbasdb3-asdb552 CSeq: 899 INVITE Contact: sip:6846@10.57.39.33 Max-Forwards: 70 Content-Type: application/sdp Expires: 180 Accept-Contact: *;+mckoppa Supported: precondition, 100Rel Require: precondition Content-Length: 392 v=0 o=Inviter2007 63241204263093750 132223800 IN IP4 10.57.39.33 s=- c=IN IP4 10.57.39.33 t=0 0 m=audio 5000 RTP/AVP 106 8 0 a=sendrecv a=rtpmap:106 AMR/8000 a=ptime:160 a=maxptime:200 a=fmtp:106 octet-align=1; mode-set=7 a=rtpmap:8 PCMA/8000 a=rtpmap:0 PCMU/8000 a=curr:qos local none a=curr:qos remote none a=des:qos mandatory local sendrecv a=des:qos none remote sendrecv
UDP Data received from: 10.57.39.120:5060 SIP/2.0 183 Session Progress Record-Route: sip:10.57.39.120;lr=on Via: SIP/2.0/UDP 10.57.39.33:5060 Require: 100Rel To: sip:1141@10.57.39.120;tag=53m9f85odqq1uld83vs6 Contact: sip:0y9N9S0dFpYtlSrLGwwF@10.57.39.114 From: sip:6846@10.57.39.120;tag=032baj647 Supported: 100Rel,precondition RSeq: 2956138 Call-ID: asdbasdb3-asdb552 CSeq: 899 INVITE Allow: UPDATE,PRACK,SUBSCRIBE,REFER,NOTIFY,INVITE,ACK,CANCEL,OPTIONS,BYE Content-Type: application/sdp Content-Length: 465 v=0 o=1141 63380817057795000 63380817057795000 IN IP4 10.57.39.114 s=- c=IN IP4 10.57.39.114 t=0 0 m=audio 5000 RTP/AVP 106 8 0 a=sendrecv a=curr:qos local sendrecv a=curr:qos remote none a=des:qos mandatory local sendrecv a=des:qos mandatory remote sendrecv a=conf:qos remote sendrecv a=rtcp:5001 IN IP4 10.57.39.114 a=rtpmap:106 AMR/8000 a=ptime:160 a=maxptime:200 a=fmtp:106 octet-align=1; mode-set=7 a=rtpmap:8 PCMA/8000 a=rtpmap:0 PCMU/8000
UDP Data send to: 10.57.39.120:5060 PRACK sip:1141@10.57.39.120 SIP/2.0 Via: SIP/2.0/UDP 10.57.39.33:5060 From: sip:6846@10.57.39.120;tag=032baj647 To: sip:1141@10.57.39.120;tag=53m9f85odqq1uld83vs6 Call-ID: asdbasdb3-asdb552 CSeq: 89951 PRACK Contact: sip:6846@10.57.39.33 Max-Forwards: 70 Route: sip:10.57.39.120;lr=on Content-Type: application/sdp Expires: 180 Accept-Contact: *;+mckoppa Supported: precondition, 100Rel Require: precondition RAck:2956138 899 INVITE Content-Length: 278 v=0 o=Inviter2007 63241204263093750 132223801 IN IP4 10.57.39.33 s=- c=IN IP4 10.57.39.33 t=0 0 m=audio 5000 RTP/AVP 106 a=rtpmap:106 AMR/8000 a=curr:qos local sendrecv a=curr:qos remote sendrecv a=des:qos mandatory local sendrecv a=des:qos mandatory remote sendrecv
If added a route rule 'if ( is_method("PRACK") ) { t_relay(); exit;} ' , I'll receive the 483 response. Otherwise, receive 404 Not here
UDP Data received from: 10.57.39.120:5060 SIP/2.0 483 Too Many Hops Via: SIP/2.0/UDP 10.57.39.33:5060 From: sip:6846@10.57.39.120;tag=032baj647 To: sip:1141@10.57.39.120;tag=53m9f85odqq1uld83vs6 Call-ID: asdbasdb3-asdb552 CSeq: 89951 PRACK Server: OpenSER (1.3.1-notls (i386/linux)) Content-Length: 0
________________________________
From: users-bounces@lists.openser.org 代表 I?aki Baz Castillo Sent: 2008-6-3 (星期二) 17:26 To: users@lists.openser.org Subject: Re: [OpenSER-Users] how to configure to support PRACK
El Tuesday 03 June 2008 11:02:39 Steven Wu escribi:
Hi All,
Could someone tell me how to config openser 1.3.x route to support PRACK?
OpenSer doesn't need to do nothing to support PRACK (they are the endpoints who support it or not). PRACK is an in-dialog request, just it.
I suppose that the 183 OpenSer forwards to UAC contains a Record-Route added by OpenSer in the INVITE, so the PRACK must contain a Route header and also the To tag received in the 183. Then "has_totag" and "loose_route" return true so a simple t_relay must work.
Nothing special must be done, I sure it by experience.
Regards.
-- Iaki Baz Castillo ibc@in.ilimit.es
_______________________________________________ Users mailing list Users@lists.openser.org http://lists.openser.org/cgi-bin/mailman/listinfo/users
2008/6/4, Steven.Wu@teleca.com Steven.Wu@teleca.com:
Hi Iñaki,
Hi Steven, for next time please mantain the thread in the maillist ;)
See inline:
At first, I repied the PRACK without Route header but contian the to tag. I added the Route header after receive your opinion. But also failed. I attached my SIP message, could you please take a look them and give me some suggestion?
First of all, do you mean that you added the Route in the UAC? are you programming the UAC?
UDP Data send to: 10.57.39.120:5060
This INVITE goes to the proxy: 10.57.39.120
INVITE sip:1141@10.57.39.120 SIP/2.0 Via: SIP/2.0/UDP 10.57.39.33:5060 From: sip:6846@10.57.39.120;tag=032baj647 To: sip:1141@10.57.39.120 Call-ID: asdbasdb3-asdb552 CSeq: 899 INVITE Contact: sip:6846@10.57.39.33 Max-Forwards: 70 Content-Type: application/sdp Expires: 180 Accept-Contact: *;+mckoppa Supported: precondition, 100Rel Require: precondition Content-Length: 392 v=0 o=Inviter2007 63241204263093750 132223800 IN IP4 10.57.39.33 s=- c=IN IP4 10.57.39.33 t=0 0 m=audio 5000 RTP/AVP 106 8 0 a=sendrecv a=rtpmap:106 AMR/8000 a=ptime:160 a=maxptime:200 a=fmtp:106 octet-align=1; mode-set=7 a=rtpmap:8 PCMA/8000 a=rtpmap:0 PCMU/8000 a=curr:qos local none a=curr:qos remote none a=des:qos mandatory local sendrecv a=des:qos none remote sendrecv
UDP Data received from: 10.57.39.120:5060
The proxy replies.
SIP/2.0 183 Session Progress Record-Route: sip:10.57.39.120;lr=on
This Record-Route forces the UAC to include a "Route" header with same value and send there future *in-dialog* requests.
Via: SIP/2.0/UDP 10.57.39.33:5060 Require: 100Rel To: sip:1141@10.57.39.120;tag=53m9f85odqq1uld83vs6 Contact: sip:0y9N9S0dFpYtlSrLGwwF@10.57.39.114
Note that the UAS location is 10.57.39.114 so future **in-dialog** requests MUST have this IP 10.57.39.114 in the RURI and NOT the proxy IP.
From: sip:6846@10.57.39.120;tag=032baj647 Supported: 100Rel,precondition RSeq: 2956138 Call-ID: asdbasdb3-asdb552 CSeq: 899 INVITE Allow: UPDATE,PRACK,SUBSCRIBE,REFER,NOTIFY,INVITE,ACK,CANCEL,OPTIONS,BYE Content-Type: application/sdp Content-Length: 465 v=0 o=1141 63380817057795000 63380817057795000 IN IP4 10.57.39.114 s=- c=IN IP4 10.57.39.114 t=0 0 m=audio 5000 RTP/AVP 106 8 0 a=sendrecv a=curr:qos local sendrecv a=curr:qos remote none a=des:qos mandatory local sendrecv a=des:qos mandatory remote sendrecv a=conf:qos remote sendrecv a=rtcp:5001 IN IP4 10.57.39.114 a=rtpmap:106 AMR/8000 a=ptime:160 a=maxptime:200 a=fmtp:106 octet-align=1; mode-set=7 a=rtpmap:8 PCMA/8000 a=rtpmap:0 PCMU/8000
UDP Data send to: 10.57.39.120:5060
This is an in-dialog message (it has "To" tag) but the RURI is not the received Contact (10.57.39.114). It's the proxy IP, why??? this is completely incorrect. An in-dialog request must have in the RURI the URI received in the 183 Contact. And if the in-dialog request has a "Route" header it must be send to that location. This is how loose routing works.
PRACK sip:1141@10.57.39.120 SIP/2.0 Via: SIP/2.0/UDP 10.57.39.33:5060 From: sip:6846@10.57.39.120;tag=032baj647 To: sip:1141@10.57.39.120;tag=53m9f85odqq1uld83vs6 Call-ID: asdbasdb3-asdb552 CSeq: 89951 PRACK Contact: sip:6846@10.57.39.33 Max-Forwards: 70 Route: sip:10.57.39.120;lr=on Content-Type: application/sdp Expires: 180 Accept-Contact: *;+mckoppa Supported: precondition, 100Rel Require: precondition RAck:2956138 899 INVITE Content-Length: 278 v=0 o=Inviter2007 63241204263093750 132223801 IN IP4 10.57.39.33 s=- c=IN IP4 10.57.39.33 t=0 0 m=audio 5000 RTP/AVP 106 a=rtpmap:106 AMR/8000 a=curr:qos local sendrecv a=curr:qos remote sendrecv a=des:qos mandatory local sendrecv a=des:qos mandatory remote sendrecv
If added a route rule 'if ( is_method("PRACK") ) { t_relay(); exit;} ' , I'll receive the 483 response. Otherwise, receive 404 Not here
It makes sense 100%. It's an error in the RURI of your PRACK.
Please, read again http://tools.ietf.org/html/rfc3261#section-12.2
Regards.
-
Iñaki Baz Castillo -
Steven.Wu＠teleca.com