[SR-Users] Regarding Instant messaging using TCP on Kamailio 3.3

[Sunil Chandrasekharan]

Hi All

Today i could find some information from the logs.
When i tested the command :

sudo kamcmd core.tcp_list

I get 2 connection ( with 2 users regitred with TCP)

But when i try to send message from User 2 to User 1, i see that 1 more
connection is added.
But here the port is confusing. becuase the other 2 tcp connection shows
the rport of the users. But with the 3rd connection the port is shown as
5060..

I feel Kamailio is adding a new TCP connection instead of using the
existing connection between the client and Kamailio with the rport number.

I read that we can use (force_rport()) , but i could not understand how to
use it . Alo when i gave

force_rport=yes inside the global parameter of Kamaili.cfg file, i still
face the same issue.

This issue exists even when User 2 try to call/IM to User 1.

my laptop is User 1. But i can send IM/Call User 2 succeessfully. I dont
understand how my machine can send IM/call successfully, and why no other
user can do the same?

Kindly support me

On Thu, Jun 20, 2013 at 5:27 PM, Sunil Chandrasekharan <
sunil.kainat at gmail.com> wrote:

> Hi All,
>
> I tested again today by disabling the presence module.
>
> Still i could not make TCP based IM working with Kamailio.
>
> I checked the tcp-connection-lifetime =3605.
> Still i get 480 Temperory un available.
>
> Step 1 : login/register on two lin phones ( on differnt PC)
> Step 2: from PC 1 (user A) send message to user B
> Step 3: user B receive the mesage.
> Step 4. Send message from User B to User A
>
> Result : 480 Temperory unavailable.
>
> 1. I feel user A connection is getting closed . Hence not able to reach
> user A.
>
> 2. I also see User A and User B message contruct has 2 Via headers.
>
> There is no change or anything abnormal happening.
>
> Kindly help me forward to get tcp based IM working between two clients.
>
>
>
> On Tue, Jun 18, 2013 at 2:27 PM, Sunil Chandrasekharan <
> sunil.kainat at gmail.com> wrote:
>
>> Hi ,
>>
>> I used open internet,  i really doubt if there is any NAT issue here.
>>
>> But my config file(kamailio.cfg) shows : tcp-connection-lifetime=3605
>> But i dont know what is the registration expire time . How can i see the
>> registration expire time?
>> also my lin phone sends keep alive right?
>>
>> can you please help me how can i see connection close parameter during
>> forward/reply? i dont know where to set them?
>>
>> Please suggest me the correct link to find tcp paremeter and cook book.
>>
>>
>> On Tue, Jun 18, 2013 at 2:06 PM, Daniel-Constantin Mierla <
>> miconda at gmail.com> wrote:
>>
>>> Hello,
>>>
>>>
>>> On 6/17/13 7:09 AM, Sunil Chandrasekharan wrote:
>>>
>>>>
>>>> Hi All,
>>>>
>>>> I have set up Kamailio 3.3 on Ubuntu machine.I created two user test 1
>>>> and test 2.
>>>> I could use Presence and also i was able to register to Kamailio server
>>>> and exchange presence status with each other.
>>>>
>>>> Details- I used TCP protocol .
>>>>
>>>> testing methods - Linphone, a sample application.
>>>>
>>>> I am able to register succesfully with (TCP) on to kamailio server
>>>> using Lin phone and sample application.
>>>> I am able to update presence status of the users.
>>>>
>>>> Issue :
>>>>
>>>> When i try to send messages between two users ( using TCP )
>>>>
>>>> 1. from Sample application, when i try to send message, i get 420
>>>> temporarily Unavailable error from server.
>>>> 2. from Lin phone 3.5.2, i was able to send messages ( sue TCP) but
>>>> when the other user try to reply back , i get same error
>>>>
>>>> 480 Temporarily Unavailable. error from server.
>>>>
>>>> I want a support to understand why i get error while sending messages
>>>> with TCP via Kamailio server.
>>>>
>>>> I am able to succeesfully send and receive messages when i use UDP from
>>>> my sample application and Lin phone.
>>>>
>>> if the phones are behind nat, be sure the tcp connection lifetime is
>>> higher than the registration expire and that you don't set connection close
>>> after forward/reply. Look at core cookbook for the appropriate tcp
>>> parameter and config functions.
>>>
>>> Cheers,
>>> Daniel
>>>
>>> --
>>> Daniel-Constantin Mierla - http://www.asipto.com
>>> http://twitter.com/#!/miconda - http://www.linkedin.com/in/**miconda<http://www.linkedin.com/in/miconda>
>>> Kamailio Advanced Training, San Francisco, USA - June 24-27, 2013
>>>   * http://asipto.com/u/katu *
>>>
>>>
>>> ______________________________**_________________
>>> 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<http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users>
>>>
>>
>>
>
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