[SR-Users] Need help troubleshooting messages that never made it to the client

[Daniel-Constantin Mierla]

Hello,


On 08.12.17 18:15, Andrew Chen wrote:
> Hi Daniel,
>
> Thanks for the response.  The question that's been raised by our
> engineers is how do we know the message that's put in the queue
> actually successfully been sent on the wire/network?  Have there been
> situations where it gets stuck in the queue and never sent out?
>

once in the queue it may get discarded if connection cannot be
established or because of transmission timeout.

Cheers,
Daniel

> Thanks.
> --Andy
>
> On Fri, Dec 8, 2017 at 12:35 AM, Daniel-Constantin Mierla
> <miconda at gmail.com <mailto:miconda at gmail.com>> wrote:
>
>     Hello,
>
>
>     On 08.12.17 02:23, Andrew Chen wrote:
>     > Hi all,
>     >
>     > So for a while now I've been working with our engineering team to
>     > troubleshoot these random events where the UPDATE message sent from
>     > the server never made it to the client side.  Here is the the
>     topology:
>     >
>     > Server -(tcp)-> kamailio -(tls)-> client
>     >
>     > So looks pretty straight forward and I have logging messages stating
>     > t_relay() was successful in sending the message.
>     >
>     > The question is how do we know t_relay really successfully sent it? 
>     > Does it actually monitor the physical interface as it goes out?
>     >
>     >
>     t_relay() may return successful code if the message was put in the
>     writing queue. Later can be another log message if sending ended int a
>     transmission timeout. Do you have a failure_route set for such
>     t_relay()? If not, you can add one, it should be executed if
>     sending fails.
>
>     Cheers,
>     Daniel
>
>     --
>     Daniel-Constantin Mierla
>     www.twitter.com/miconda <http://www.twitter.com/miconda> --
>     www.linkedin.com/in/miconda <http://www.linkedin.com/in/miconda>
>     Kamailio Advanced Training - www.asipto.com <http://www.asipto.com>
>     Kamailio World Conference - May 14-16, 2018 -
>     www.kamailioworld.com <http://www.kamailioworld.com>
>
>
>
>
> -- 
> Andy Chen
> Sr. Telephony Lead Engineer
> 415 516 5535 (M)
> achen@ <mailto:achen at thinkingphones.com>fuze.com <http://fuze.com>
>
>
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-- 
Daniel-Constantin Mierla
www.twitter.com/miconda -- www.linkedin.com/in/miconda
Kamailio Advanced Training - www.asipto.com
Kamailio World Conference - May 14-16, 2018 - www.kamailioworld.com

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