Re: [OpenSIPStack] Received response without transaction issue

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>From UA do u mean Caller or Callee?

-----Original Message-----
From: jo...@op... [mailto:joe...@gm...]
Sent: Monday, December 22, 2008 2:20 PM
To: Manoj Joshi
Cc: ope...@li...
Subject: Re: [OpenSIPStack] Received response without transaction issue

Hi Manoj,

The UA is definitely buggy.  It is not sending a via branch parameter
which is required to match responses with transactions.  200 Ok was
relayed because of an uncaught condition.  OpenSBC thought it was a 200
ok retransmission that is why it got promoted to the core layer.  This
is a bug in OpenSBC that needs to be corrected.  However, this will not
make the buggy UA work with OpenSBC either.  I suggest you report this
to the vendor.  One thing peculiar,  the UA does send a via branch in
100 Trying.

Joegen

Manoj Joshi wrote:
> Hello Joegen,
>
> I think in this case my PC firewall is creating problem. I am verifying it
> by testing from various places.
>
> I have another problem though...The issue is like following..
>
> OSBC does not forward Session progress message to SIP UA. However it
> forwards 200 OK message. I checked the logs and found osbc prints
following
> on receiving session progress...
> 2008/12/22 07:24:51.656	DBG: [CID=0x0511] Finding transaction for SIP/2.0
> 183 Session Progress
> 2008/12/22 07:24:51.656	PWL: [CID=0x0000] Parser
> TransactionId::operator=() - No Branch Paramemter in Via present in
message
> 2008/12/22 07:24:51.656	DBG: [CID=0x0511] Setting Transaction ID to
> s_9608_551d896705cd-0x0001|empty-branch|INVITE|1c18646|22580
> 2008/12/22 07:24:51.656	PWL: [CID=0x0000] Parser
> TransactionId::operator=() - No Branch Paramemter in Via present in
message
> 2008/12/22 07:24:51.656	DBG: [CID=0x0511] Event: Setting UA Core [Call] to
> handle event INVITE
> 2008/12/22 07:24:51.656	DTL: [CID=0x0511] Event: ---> UnknownTransaction -
> INVITE
>
> I have attached the log. This log will be simple to read as it has only
one
> call log.
>
> Please comment.
>
> Regards,
>
> Manoj
>
> -----Original Message-----
> From: jo...@op... [mailto:joe...@gm...]
> Sent: Thursday, December 18, 2008 7:48 PM
> To: ope...@li...
> Subject: Re: [OpenSIPStack] Received response without transaction issue
>
>
> Ok now you are sure that the packets never arrive to your client.  Now
> run Ethereal in the OpenSBC box and see if ethereal shows the outbound
> packets.  If Etheareal shows it, then its a network problem.   The fact
> that some messages arrive and some don't points to a network problem.
> Start looking in that direction.  As far as the logs go, OpenSBC sends
> the responses.  I am sure if you snoop the packets traversing OpenSBC
> NIC that you will see those packets being sent.  It just never arrive to
> the destination.  There is nothing OpenSBC can do about this.
>
>
> Manoj Joshi wrote:
>
>> In ethereal i do not see any response to Register requests. UA is sending
>> register again because its not getting response.
>>
>> You can also try to register from ur place to my server...i can even
>>
> arrange
>
>> my SIP proxy to comminicate with ur OSBC (on ur machine).
>>
>> Let me know.
>>
>> -----Original Message-----
>> From: Joegen E. Baclor [mailto:joe...@gm...]
>> Sent: Thursday, December 18, 2008 6:24 PM
>> To: Manoj Joshi
>> Cc: ope...@li...
>> Subject: Re: [OpenSIPStack] Received response without transaction issue
>>
>>
>> The log indicates that your UA is retransmitting the REGISTER even if
>> OpenSBC alredy sent a 200 OK for the registration.   If ethereal shows
>> these messages in the wire, then this is a network problem.
>>
>> Manoj Joshi wrote:
>>
>>
>>> joegen,
>>>
>>> As per our discussion, i tried to capture the packets on wireshark. To
do
>>>
>>>
>> so
>>
>>
>>> i configured UA to disable encryption. But now its not even registering.
>>>
> I
>
>>> have attached server logs. On UA side wireshark i do not see any
response
>>> from server. Please note that everything is same (OSBC and UA config)
>>>
>>>
>> except
>>
>>
>>> now i am not using encryption.
>>>
>>> Please comment on it.
>>>
>>> Regards,
>>>
>>> Manoj
>>>
>>>
>>> -----Original Message-----
>>> From: Manoj Joshi [mailto:ma...@as...]
>>> Sent: Thursday, December 18, 2008 1:54 PM
>>> To: jb...@so...
>>> Cc: ope...@li...
>>> Subject: Re: [OpenSIPStack] Received response without transaction issue
>>>
>>>
>>> trying is coming...i will check the ethreal and will let u know.
>>>
>>> -----Original Message-----
>>> From: Joegen E. Baclor [mailto:joe...@gm...]
>>> Sent: Thursday, December 18, 2008 12:26 PM
>>> To: Manoj Joshi
>>> Cc: ope...@li...
>>> Subject: Re: [OpenSIPStack] Received response without transaction issue
>>>
>>>
>>>
>>>
>>>
>>>>> i am getting "Trying" and "Bye" on SIP client
>>>>>
>>>>>
>>>>>
>>> I doubt this very much.  Based on the log you sent, your UA kept on
>>> retransmitting the INVITE.  This indicates that 100 Trying never made it
>>> to the UA.
>>>
>>> 2008/12/17 21:49:04.210    INF: [CID=0x0621] <<< INVITE
>>> sip:919811618189@216.176.181.108 SIP/2.0  SRC: 122.160.115.219:11765:UDP
>>> enc=1 bytes=794
>>> 2008/12/17 21:49:04.726    INF: [CID=0x0621] <<< INVITE
>>> sip:919811618189@216.176.181.108 SIP/2.0  SRC: 122.160.115.219:11765:UDP
>>> enc=1 bytes=794
>>> 2008/12/17 21:49:05.726    INF: [CID=0x0621] <<< INVITE
>>> sip:919811618189@216.176.181.108 SIP/2.0  SRC: 122.160.115.219:11765:UDP
>>> enc=1 bytes=794
>>> 2008/12/17 21:49:07.726    INF: [CID=0x0621] <<< INVITE
>>> sip:919811618189@216.176.181.108 SIP/2.0  SRC: 122.160.115.219:11765:UDP
>>> enc=1 bytes=794
>>>
>>> I would be looking how traffic looks in ethereal if I were you.
>>>
>>> Manoj Joshi wrote:
>>>
>>>
>>>
>>>> I had tested it from two places (One behind NAT and other from Public
>>>>
>>>>
>> IP).
>>
>>
>>>> Also i am testing it from the place where SIP is not blocked at all.
>>>>
>>>>
>>>>
>>> Please
>>>
>>>
>>>
>>>> note that i am getting "Trying" and "Bye" on SIP client (as these
>>>>
>>>>
>> messages
>>
>>
>>>> are directly from OSBC). But i do not get "Session progress" and "200
>>>>
> OK"
>
>>>> Regards,
>>>>
>>>> Manoj
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
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>> 12/17/2008
>>
>>
>>> 7:21 PM
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>> 7:21 PM
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Checked by AVG.
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3:08 PM