[SR-Users] TCP connection select problem

[张顺通]

I Send you pcap Separatly.

Sorry, can't send pcap to mail list.

Thanks

2016-03-15 16:08 GMT+08:00 Daniel-Constantin Mierla <miconda at gmail.com>:

> Can you attach a pcap with such situation, which includes the REGISTER,
> replies and the call showing the issue?
>
> Cheers,
> Daniel
>
>
> On 15/03/16 03:36, 张顺通 wrote:
>
> sorry，I have not expressed clearly.
>
> kamailio will recive two REGISTER at a time.In first 200 OK to REGISTER,
> Server will tell Linphone the Linphone Nat Ip and Port.
> like this:
> Via:SIP/2.0/TCP 30.9.2.1:50691
> ;received=42.1.7.1;alias;branch=z9hG4bK.kmhC2L9Rf;rport=33746
> and Linphone will know it's outside nat Ip and port, Linphone while use
> this Ip and Port in second REGISTER.
> like this:
> REGSITER
> Contact:<sip: 42.1.7.1:33746;transport=tcp>
>
> So kamailio server know Linphone's nated ip and port and save in
> DB(contact field).
>
>
> my question is KA_EDGE receive sip from KA_REGISTER already have right
> nat ip and port like
> INVITE 123456 at 42.1.7.1:33746;transport=tcp  SIP/2.0
> but KA_EDGE do not send this sip msg to 42.1.7.1:33746, it send to
> another nat ip and port(other Linphone's ip and port behind same NAT layer)
>
>
> 2016-03-14 21:42 GMT+08:00 Daniel-Constantin Mierla < <miconda at gmail.com>
> miconda at gmail.com>:
>
>> Indeed, the ports are different, that's why adding received is important
>> in this situation.
>>
>> While local ip and local port are in most of the cases also unique for
>> devices behind a nat router, it is not 100% true, because there can be many
>> layers of NATs, which can result in seeing same local ip/port for devices.
>>
>> Cheers,
>> Daniel
>>
>>
>> On 14/03/16 13:06, 张顺通 wrote:
>>
>> source IP  is same,  But port is different。
>> like INVITE sip:Linphone_nat_Ip:Linphone_nat_port;tcp;
>>
>>
>> 2016-03-14 18:26 GMT+08:00 Daniel-Constantin Mierla <miconda at gmail.com>:
>>
>>> Adding received information to Path helps to identify properly the
>>> connection to be used. Because both devices are behind the same NAT,
>>> practically they show the same source IP when they send traffic to server.
>>>
>>> Cheers,
>>> Daniel
>>>
>>>
>>> On 14/03/16 04:05, 张顺通 wrote:
>>>
>>> KA_EDGE have two IP，external public IP and internal IP.
>>> I add modparam("path", "use_received", 1)  and replace add_path()
>>> to add_path_received() in edge server.
>>> add modparam("registrar", "path_use_received", 1) in KA_REGISTER server.
>>>
>>> DB path info <sip:aD15fXXXXXXXXXXXXeEpfqRY=@10.10.10.11;lr;ob> --> <sip:
>>> 10.10.10.11;lr;received=sip:42.129.1.1:43640%3Btransport%3Dtcp>
>>>
>>> This kind of situation very little，It is not easy to reappear.
>>> Can you tell me why this situation happen? and Why this change can
>>> solve the problem?
>>>
>>> Thanks for Your Time.
>>>
>>>
>>>
>>> 2016-03-09 22:37 GMT+08:00 Daniel Tryba < <d.tryba at pocos.nl>
>>> d.tryba at pocos.nl>:
>>>
>>>> On Wed, Mar 09, 2016 at 10:05:11PM +0800, 张顺通 wrote:
>>>> > Yes，Use Path in DB. like <sip:XXxXXXXXXXXXX/ogxZg=@10.10.232.29
>>>> ;lr;ob>
>>>> > KA_REGISTER wile the path info in DB.
>>>>
>>>> Should not be a problem if you use the use_received options in
>>>> http://kamailio.org/docs/modules/stable/modules/path.html#idp135216
>>>> and
>>>>
>>>> http://kamailio.org/docs/modules/stable/modules/registrar.html#registrar.p.path_use_received
>>>>
>>>> (and actually add the source as received on the kamailio edge server).
>>>>
>>>> _______________________________________________
>>>> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
>>>> sr-users at lists.sip-router.org
>>>> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
>>>>
>>>
>>>
>>>
>>> _______________________________________________
>>> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing listsr-users at lists.sip-router.orghttp://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
>>>
>>>
>>> --
>>> Daniel-Constantin Mierlahttp://www.asipto.comhttp://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
>>> Kamailio World Conference, Berlin, May 18-20, 2016 - http://www.kamailioworld.com
>>>
>>>
>>> _______________________________________________
>>> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
>>> sr-users at lists.sip-router.org
>>> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
>>>
>>>
>>
>> --
>> Daniel-Constantin Mierlahttp://www.asipto.comhttp://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
>> Kamailio World Conference, Berlin, May 18-20, 2016 - http://www.kamailioworld.com
>>
>>
>
> --
> Daniel-Constantin Mierlahttp://www.asipto.comhttp://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
> Kamailio World Conference, Berlin, May 18-20, 2016 - http://www.kamailioworld.com
>
>
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