[OpenSIPS-Users] B2B and "404 Not here"

Bogdan-Andrei Iancu bogdan at opensips.org
Wed Jan 19 11:02:28 CET 2011 

Hi Anton,

it seams that your opensips proxy generates the 404 - replies are not by 
default sent, so it must have been sent from script. I suspect your 
sequential requests are not properly handled and it hits the 
lookup(location) (which is for initial requests).

Regards,
Bogdan

Anton Zagorskiy wrote:
> Hi Bogdan.
>
> I fixed the B2B loop, but openSIPS still replies 404.
>
> Please see on fragments on my SIP trace:
>
> SIP flow: UA1 (192.168.0.1) -> openSIPS(B2B) (192.168.0.10) -> AudioCodes
> mediant (192.168.0.20) -> UA2 (somewhere)
>
> 1. UA1 -> openSIPS : INVITE
> Via: SIP/2.0/UDP 192.168.0.1:5060;branch=z9hG4bK-5d365510
> From: "100" <sip:100 at mydomain.com>;tag=c8163c00327d8790o0
> Call-ID: 1e2e8c0-6deac1d0 at 92.255.16.121
>
>
> 2. openSIPS -> openSIPS B2B : INVITE
> Via: SIP/2.0/UDP 192.168.0.10;branch=z9hG4bKd30e.9c8687a6.0
> From: <sip:100 at mydomain.com>;tag=c53818ff531edab4595cc700e8d1209d
> Call-ID: B2B.154.4874498
>
>
> 3. openSIPS B2B -> Mediant : INVITE
> Record-Route:
> <sip:192.168.0.10;lr=on;ftag=c53818ff531edab4595cc700e8d1209d;did=c61.b305b6
> 97>
> Via: SIP/2.0/UDP 192.168.0.10;branch=z9hG4bKd30e.ac8687a6.0
> Via: SIP/2.0/UDP 192.168.0.10;branch=z9hG4bKd30e.9c8687a6.0
> From: <sip:100 at mydomain.com>;tag=c53818ff531edab4595cc700e8d1209d
> Call-ID: B2B.154.4874498
>
> After negotiation:
>
> 4. Mediant -> openSIPS B2B : OK
> Via: SIP/2.0/UDP 192.168.0.10;branch=z9hG4bKd30e.ac8687a6.0
> Via: SIP/2.0/UDP 192.168.0.10;branch=z9hG4bKd30e.9c8687a6.0
> From: <sip:100 at mydomain.com>;tag=c53818ff531edab4595cc700e8d1209d
> To: sip:xxx at mydomain.com;tag=1c904270116
> Call-ID: B2B.154.4874498
>
>
> 5. openSIPS B2B -> openSIPS : OK
> Via: SIP/2.0/UDP 192.168.0.10;branch=z9hG4bKd30e.9c8687a6.0
> From: <sip:100 at mydomain.com>;tag=c53818ff531edab4595cc700e8d1209d
> To: sip:xxx at mydomain.com;tag=1c904270116
> Call-ID: B2B.154.4874498
>
>
>
>
> And BYE:
>
> 5. Medaint -> openSIPS B2B : BYE
> Request-Line: BYE sip:192.168.0.10:5060;transport=udp SIP/2.0
> Via: SIP/2.0/UDP 192.168.0.20;branch=z9hG4bKac1061035722
> From: sip:xxx at mydomain.com;tag=1c904270116
> To: <sip:100 at mydomain.com>;tag=c53818ff531edab4595cc700e8d1209d
> Call-ID: B2B.154.4874498
>
>
> 6. openSIPS B2B -> openSIPS : BYE
> Request-Line: BYE
> sip:192.168.0.1;lr=on;ftag=c53818ff531edab4595cc700e8d1209d;did=c61.b305b697
> SIP/2.0
> Via: SIP/2.0/UDP 192.168.0.10;branch=z9hG4bK3a1c.42ce8c57.0
> Via: SIP/2.0/UDP 192.168.0.20;branch=z9hG4bKac1061035722
> From: sip:xxx at mydomain.com;tag=1c904270116
> To: <sip:100 at mydomain.com>;tag=c53818ff531edab4595cc700e8d1209d
> Call-ID: B2B.154.4874498
>
>
> And, openSIPS replies to B2B '404'
>
>
> I see 2 potential moments:
> 1) I'm changing 'From' field on stage 2. 
> 2) On stage 3 a field 'Contact' is "Contact:
> <sip:192.168.0.10:5060;transport=udp>" althought I defined
> "modparam("b2b_logic", "server_address", "sip:sa at 192.168.0.10")"
>
>
>
>
>
>
>
>
>
>
>
> WBR, Anton Zagorskiy
> VoIP Developer, Oyster Telecom
> Phone.: +7 812 601-0666
> Fax: +7 812 601-0593
> a.zagorskiy at oyster-telecom.ru
> www.oyster-telecom.ru
>
>
>
>   
>> -----Original Message-----
>> From: users-bounces at lists.opensips.org [mailto:users-
>> bounces at lists.opensips.org] On Behalf Of Bogdan-Andrei Iancu
>> Sent: Tuesday, January 18, 2011 3:57 PM
>> To: OpenSIPS users mailling list
>> Subject: Re: [OpenSIPS-Users] B2B and "404 Not here"
>>
>> Hi Anton,
>>
>> The ERROR line you have here are not essential - they simply say that
>> the warning (optional) hdr was not added. Not an actual error.
>>
>> Can you check doing a capture at net level who is generating the 404
>> reply? from opensips script, for final callee ?
>>
>> Regards,
>> Bogdan
>>
>>
>> Anton Zagorskiy wrote:
>>     
>>> Hi.
>>>
>>> While using B2B when callee ends an established call openSIPS replies
>>>       
>> '404
>>     
>>> Not Here' and goes to the infinitive loop..
>>>
>>> Here is a part of a log:
>>> Jan 17 19:01:25 softswitch [softswitch][9329]: *** route ->  M=BYE
>>> Jan 17 19:01:25 softswitch [softswitch][9329]:
>>>       
>> DBG:maxfwd:is_maxfwd_present:
>>     
>>> value = 32
>>> Jan 17 19:01:25 softswitch [softswitch][9329]:
>>>       
>> DBG:maxfwd:is_maxfwd_lt:
>>     
>>> value = 31
>>> Jan 17 19:01:25 softswitch [softswitch][9329]: DBG:uri:has_totag:
>>>       
>> totag
>>     
>>> found
>>> Jan 17 19:01:25 softswitch [softswitch][9329]:
>>>       
>> DBG:core:parse_headers:
>>     
>>> flags=200
>>> Jan 17 19:01:25 softswitch [softswitch][9329]:
>>>       
>> DBG:rr:find_first_route: No
>>     
>>> Route headers found
>>> Jan 17 19:01:25 softswitch [softswitch][9329]: DBG:rr:loose_route:
>>>       
>> There is
>>     
>>> no Route HF
>>> Jan 17 19:01:25 softswitch [softswitch][9329]:
>>>       
>> DBG:core:parse_headers:
>>     
>>> flags=ffffffffffffffff
>>> Jan 17 19:01:25 softswitch [softswitch][9329]:
>>>       
>> DBG:core:check_ip_address:
>>     
>>> params 192.168.0.2, 192.168.0.2, 0
>>> Jan 17 19:01:25 softswitch [softswitch][9329]:
>>>       
>> ERROR:core:warning_builder:
>>     
>>> buffer size exceeded
>>> *** Jan 17 19:01:25 softswitch [softswitch][9329]:
>>> WARNING:core:build_res_buf_from_sip_req: warning skipped -- too big
>>> Jan 17 19:01:25 softswitch [softswitch][9329]:
>>>       
>> DBG:sl:run_sl_callbacks:
>>     
>>> callback id 0 entered
>>> Jan 17 19:01:25 softswitch [softswitch][9329]:
>>> DBG:siptrace:trace_sl_onreply_out: trace off...
>>> Jan 17 19:01:25 softswitch [softswitch][9330]: DBG:core:parse_msg:
>>>       
>> SIP Reply
>>     
>>> (status):
>>> Jan 17 19:01:25 softswitch [softswitch][9329]:
>>>       
>> DBG:core:destroy_avp_list:
>>     
>>> destroying list (nil)
>>> Jan 17 19:01:25 softswitch [softswitch][9329]: DBG:core:receive_msg:
>>> cleaning up
>>> Jan 17 19:01:25 softswitch [softswitch][9330]: DBG:core:parse_msg:
>>>       
>> version:
>>     
>>> <SIP/2.0>
>>> Jan 17 19:01:25 softswitch [softswitch][9330]: DBG:core:parse_msg:
>>>       
>> status:
>>     
>>> <404>
>>> Jan 17 19:01:25 softswitch [softswitch][9330]: DBG:core:parse_msg:
>>>       
>> reason:
>>     
>>> <Not here>
>>> Jan 17 19:01:25 softswitch [softswitch][9330]:
>>>       
>> DBG:core:parse_headers:
>>     
>>> flags=2
>>>
>>>
>>> While debugging at line marked *** I see that warning_len is 0
>>>
>>>
>>> Any suggestions?
>>>
>>>
>>>
>>> WBR, Anton Zagorskiy
>>> VoIP Developer, Oyster Telecom
>>> Phone.: +7 812 601-0666
>>> Fax: +7 812 601-0593
>>> a.zagorskiy at oyster-telecom.ru
>>> www.oyster-telecom.ru
>>>
>>>
>>>
>>>
>>>
>>> _______________________________________________
>>> Users mailing list
>>> Users at lists.opensips.org
>>> http://lists.opensips.org/cgi-bin/mailman/listinfo/users
>>>
>>>
>>>       
>> --
>> Bogdan-Andrei Iancu
>> OpenSIPS Event - expo, conf, social, bootcamp
>> 2 - 4 February 2011, ITExpo, Miami,  USA
>> OpenSIPS solutions and "know-how"
>>
>>
>> _______________________________________________
>> Users mailing list
>> Users at lists.opensips.org
>> http://lists.opensips.org/cgi-bin/mailman/listinfo/users
>>     
>
>
> _______________________________________________
> Users mailing list
> Users at lists.opensips.org
> http://lists.opensips.org/cgi-bin/mailman/listinfo/users
>
>   


-- 
Bogdan-Andrei Iancu
OpenSIPS Event - expo, conf, social, bootcamp
2 - 4 February 2011, ITExpo, Miami,  USA
OpenSIPS solutions and "know-how"

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