[SR-Users] Unable to parse the Cancel request
Ilie Soltanici
iliusha.md at gmail.com
Wed May 5 18:32:10 CEST 2021
Hello,
Thank you Daniel for looking into this, I think I found the problem and it
was in the header:
*TOH: 123456789*
For some reason kamailio parsed it as a "To" header, by removing this
header the Cancel message was delivered successfully out.
Thank you.
On Wed, 5 May 2021 at 17:28, Daniel-Constantin Mierla <miconda at gmail.com>
wrote:
> Hello,
>
> hmm, 5.4.5 should have been also good, being the last in 5.4.x series,
> with the fix that I was thinking of. I will look at the code.
>
> Cheers,
> Daniel
> On 05.05.21 17:56, Ilie Soltanici wrote:
>
> Hello,
>
> Yes, initially I was trying with version 5.4.5, then I upgraded to the
> latest version from 5.5 branch - but this didn't fix the issue.
>
> version: kamailio 5.5.0 (x86_64/linux) d4c1a1
> flags: USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, USE_RAW_SOCKS,
> DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MMAP, PKG_MALLOC, Q_MALLOC,
> F_MALLOC, TLSF_MALLOC, DBG_SR_MEMORY, USE_FUTEX, FAST_LOCK-ADAPTIVE_WAIT,
> USE_DNS_CACHE, USE_DNS_FAILOVER, USE_NAPTR, USE_DST_BLOCKLIST,
> HAVE_RESOLV_RES, TLS_PTHREAD_MUTEX_SHARED
> ADAPTIVE_WAIT_LOOPS 1024, MAX_RECV_BUFFER_SIZE 262144, MAX_URI_SIZE 1024,
> BUF_SIZE 65535, DEFAULT PKG_SIZE 8MB
> poll method support: poll, epoll_lt, epoll_et, sigio_rt, select.
> id: d4c1a1
> compiled on 16:08:42 May 5 2021 with gcc 8.3.0
>
> OS: Description: Debian GNU/Linux 10 (buster)
>
> Thank you.
>
> On Wed, 5 May 2021 at 16:42, Daniel-Constantin Mierla <miconda at gmail.com>
> wrote:
>
>> Hello,
>>
>> are you running the latest version in the X.Y series? Likely you have a
>> version with an issue that was fixed, iirc.
>>
>> Cheers,
>> Daniel
>> On 05.05.21 17:32, Ilie Soltanici wrote:
>>
>> Hello,
>>
>> No, that's not the case, see below the INVITE sent to the branch:
>>
>> INVITE sip:123456789 at 1.2.3.4:5060;transport=UDP SIP/2.0
>> Record-Route: <sip:1.2.3.4:5060;lr;ftag=244c2803;did=cb4.8cb>
>> Via: SIP/2.0/UDP 1.2.3.4:5060
>> ;branch=z9hG4bK0f41.5079ae8da835958ee58ca1e8a4eb057b.0
>> Via: SIP/2.0/UDP 192.168.1.10:40769
>> ;received=1.3.5.7;branch=z9hG4bK-524287-1---46a5782b47b6ec85;rport=40769
>> Max-Forwards: 69
>> Contact: <sip:101 at 1.3.5.7:40769;transport=UDP;alias=1.3.5.7~40769~1>
>> To: <sip:123456789 at 1.2.3.4:5060>
>> From: <sip:101 at 1.2.3.4:5060;transport=UDP>;tag=244c2803
>> Call-ID: KfuC1GMvCvk1YCSKnHwDrw..
>> CSeq: 2 INVITE
>> Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, MESSAGE, OPTIONS, INFO,
>> SUBSCRIBE
>> Content-Type: application/sdp
>> User-Agent: Z 5.4.12 v2.10.13.2-mod
>> Allow-Events: presence, kpml, talk
>> Content-Length: 336
>> TOH: 123456789
>>
>> v=0
>> o=Z 1620220570589 1 IN IP4 1.3.5.7
>> s=Z
>> c=IN IP4 1.3.5.7
>> t=0 0
>> m=audio 8000 RTP/AVP 106 9 98 101 0 8 3
>> a=rtpmap:106 opus/48000/2
>> a=fmtp:106 sprop-maxcapturerate=16000; minptime=20; useinbandfec=1
>> a=rtpmap:98 telephone-event/48000
>> a=fmtp:98 0-16
>> a=rtpmap:101 telephone-event/8000
>> a=fmtp:101 0-16
>> a=sendrecv
>>
>> thanks
>>
>> On Wed, 5 May 2021 at 16:24, Daniel-Constantin Mierla <miconda at gmail.com>
>> wrote:
>>
>>> Hello,
>>>
>>> the CANCEL to be sent is generated locally by tm module from the INVITE
>>> that was sent on the branch, so the errors is actually about a duplicate To
>>> header in that INVITE. Check it on the network to see if that's the case.
>>>
>>> Cheers,
>>> Daniel
>>> On 05.05.21 16:25, Ilie Soltanici wrote:
>>>
>>> Hello,
>>>
>>> We are having an issue here where Kamailio is complaining about
>>> duplicate To header, while in the SIP Packet there is just one. See below
>>> the log message:
>>>
>>> DEBUG: tm [t_msgbuilder.c:391]: build_local_reparse(): duplicate To
>>> header
>>> ERROR: tm [t_msgbuilder.c:531]: build_local_reparse(): cannot build
>>> CANCEL request
>>> ERROR: tm [t_cancel.c:297]: cancel_branch(): attempt to build a CANCEL
>>> failed
>>> ERROR: tm [t_fwd.c:1434]: e2e_cancel(): cancel error
>>>
>>> And this is the sip message:
>>>
>>> CANCEL sip:123456789 at 1.2.3.4:5060 SIP/2.0
>>> Via: SIP/2.0/UDP 192.168.1.1:19373
>>> ;branch=z9hG4bK-524287-1---7774073fad1a3264;rport
>>> Max-Forwards: 70
>>> To: <sip:123456789 at 1.2.3.4:5060>
>>> From: "101"<sip:101 at 1.2.3.4:5060>;tag=6f373b66
>>> Call-ID: hC2O6zx8ZaUJ1di046
>>> CSeq: 2 CANCEL
>>> Proxy-Authorization: Digest
>>> username="101",realm="1.2.3.4",nonce="YJKbfWCSmlFTHxdJfKmySydF9L7FzfaqcgyOo4A=",uri="
>>> sip:123456789 at 1.2.3.4:5060
>>> ",response="2bf2ba8ef2374d6aa8c39d650613077d",algorithm=MD5
>>> User-Agent: TEST
>>> Content-Length: 0
>>>
>>> version: kamailio 5.5.0 (x86_64/linux) d4c1a1
>>>
>>> The route itself, is like in the standard documentation:
>>>
>>> # CANCEL processing
>>> if KSR.is_CANCEL() :
>>> KSR.info(RANDOM_LOG + 'KSR.is_CANCEL')
>>> if KSR.tm.t_check_trans()>0 :
>>> self.ksr_route_relay(msg)
>>> return 1
>>>
>>>
>>> def ksr_route_relay(self, msg):
>>> if KSR.is_method_in("IBSU") :
>>> if KSR.tm.t_is_set("branch_route")<0 :
>>> KSR.tm.t_on_branch("ksr_branch_manage")
>>>
>>> if KSR.is_method_in("ISU") :
>>> if KSR.tm.t_is_set("onreply_route")<0 :
>>> KSR.tm.t_on_reply("ksr_onreply_manage")
>>>
>>> if KSR.is_INVITE() :
>>> if KSR.tm.t_is_set("failure_route")<0 :
>>> KSR.tm.t_on_failure("ksr_failure_manage")
>>>
>>> if KSR.tm.t_relay()<0 :
>>> KSR.sl.sl_reply_error()
>>>
>>> return -255
>>>
>>> Thanks
>>>
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>>> --
>>> Daniel-Constantin Mierla -- www.asipto.comwww.twitter.com/miconda -- www.linkedin.com/in/miconda
>>> Kamailio Advanced Training - Online
>>> May 17-20, 2021 (Europe Timezone) - June 7-10, 2021 (America Timezone)
>>> * https://www.asipto.com/sw/kamailio-advanced-training-online/
>>>
>>> --
>> Daniel-Constantin Mierla -- www.asipto.comwww.twitter.com/miconda -- www.linkedin.com/in/miconda
>> Kamailio Advanced Training - Online
>> May 17-20, 2021 (Europe Timezone) - June 7-10, 2021 (America Timezone)
>> * https://www.asipto.com/sw/kamailio-advanced-training-online/
>>
>> --
> Daniel-Constantin Mierla -- www.asipto.comwww.twitter.com/miconda -- www.linkedin.com/in/miconda
> Kamailio Advanced Training - Online
> May 17-20, 2021 (Europe Timezone) - June 7-10, 2021 (America Timezone)
> * https://www.asipto.com/sw/kamailio-advanced-training-online/
>
>
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