[OpenSIPS-Users] FW: Asynchronous operation for REST queries

[Liviu Chircu]

Thank you for the logs, this is what I was looking for:

Sep 12 19:39:34 sturn-test /usr/local/sbin/opensips[23877]: 
DBG:rest_client:start_async_http_req: libcurl TCP connect: we should 
wait up to 977ms (timeout=1000ms)!
Sep 12 19:39:34 sturn-test /usr/local/sbin/opensips[23877]: 
DBG:rest_client:start_async_http_req: busy waiting 98ms ...

So libcurl tells us we should wait, at most, 1 second before we can 
proceed with the transfer. The logic I added on the dev branch only 
waits 10% of this interval (98ms), but it's obviously way too much, 
since the connection is up within 8ms.

I will rework this 10% logic into a "connect_polling_interval" 
(milliseconds) module parameter, so you can customize it according to 
your environment and start your transfers a lot faster.

Liviu Chircu
OpenSIPS Developer
http://www.opensips-solutions.com

On 13.09.2016 21:14, Ramachandran, Agalya (Contractor) wrote:
>
> Hi Liviu,
>
> I have configured “Connection_timeout” value as ‘1’ and ran 2 sipp calls.
>
> After TCP port is opened, HTTP request is sent out approx. 95 to 100ms 
> later. Am attaching the log of the opensips by enabling debugging log.
>
> I took the code from master branch and tested it out. If you find 
> everything OK let me know.
>
> Or if you feel to test any specific scenario please update me, so that 
> I can test and share you the results.
>
> P.S:
>
> One more observance.
>
> In the case of synchronous, TCP port is opened within 8 ms, whereas in 
> the case of async TCP port is opening after 100 ms.
>
> Is it the expected behavior?.
>
> What will be expected time to give this fix in a branch version?
>
> Log file ~70 MB if I enable the debug calls for single call and 
> couldn’t post you that log, since it says limit for email is 40 MB.
>
> Regards,
> Agalya
>
> *From:*Liviu Chircu [mailto:liviu at opensips.org]
> *Sent:* Monday, September 12, 2016 4:06 AM
> *To:* OpenSIPS users mailling list <users at lists.opensips.org>; 
> Ramachandran, Agalya (Contractor) <Agalya_Ramachandran at comcast.com>
> *Subject:* Re: FW:[OpenSIPS-Users] Asynchronous operation for REST queries
>
> Hi Agalya,
>
> The "connection_timeout" is a configurable module parameter, so tuning 
> it properly might just solve your problem.
>
> If you need more assistance, please enable debug logging (log_level = 
> 4), run the query and post the full log output.
>
> Best regards,
>
> Liviu Chircu
> OpenSIPS Developer
> http://www.opensips-solutions.com
>
> On 09.09.2016 23:04, Ramachandran, Agalya (Contractor) wrote:
>
>     Hi Liviu,
>
>     I have tested the patch. Now I see the delay is 2 secs. i.e after
>     2 secs it sends the HTTP request out.
>
>     I suspect this 2000 ms delay is due to the below field:
>
>     long connection_timeout = 20;
>
>     Can we reduce this field to 5 or 10, so that it waits only half a
>     second or second to send the request out.
>
>     Let me know your thoughts on this.
>
>     Am seeing the below message in logs. Is everything working as you
>     expected?
>
>     rest_client:start_async_http_req: libcurl TCP connect: we should
>     wait up to 1ms (timeout=20000ms)!
>
>     Regards,
>
>     Agalya
>
>     *From:*Liviu Chircu [mailto:liviu at opensips.org]
>     *Sent:* Thursday, September 08, 2016 7:05 AM
>     *To:* Ramachandran, Agalya (Contractor)
>     <Agalya_Ramachandran at comcast.com>
>     <mailto:Agalya_Ramachandran at comcast.com>; Bogdan-Andrei Iancu
>     <bogdan at opensips.org> <mailto:bogdan at opensips.org>; OpenSIPS users
>     mailling list <users at lists.opensips.org>
>     <mailto:users at lists.opensips.org>
>     *Subject:* Re: FW:[OpenSIPS-Users] Asynchronous operation for REST
>     queries
>
>     Hi, Agalya!
>
>     Regarding the 10s delay problem, a fix was pushed to the
>     development branch [1]. If you are running on 2.1.4 git branch,
>     could you please pull the latest changes (git pull --rebase), and
>     test it out? You can import it with:
>
>     git cherry-pick -x 66c337cc
>
>     [1]:
>     https://github.com/OpenSIPS/opensips/commit/66c337cc89a2b5c3e1bbd78c289371efcda21886
>
>     Best regards,
>
>     Liviu Chircu
>
>     OpenSIPS Developer
>
>     http://www.opensips-solutions.com
>

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