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

[Ramachandran, Agalya (Contractor)]

Hi Liviu,

One more observance.  Am trying to load test on the main branch where you have provided your fix.
Am using REST API as, async. After receiving the response for the HTTP request, I will process the incoming SIP INVITE.

If am sending 50 calls at 2 calls per sec from sipp, -in this case it works perfectly fine.
If am sending 50 calls at 5 calls per sec from sipp, most of the call fails.

If I look at logs I could able to see that for failure case, it hits start_async_http_req, but never resume function is called.
It is printing LM_DBG("done, no need for async!\n"); and returns ASYNC_SYNC;
Any idea why for few calls, it is not acting as async? Particularly if I increase cps, am seeing this behavior.

Please let me know if am missing something.

Regards,
Agalya

From: users-bounces at lists.opensips.org [mailto:users-bounces at lists.opensips.org] On Behalf Of Ramachandran, Agalya (Contractor)
Sent: Tuesday, September 13, 2016 2:14 PM
To: Liviu Chircu <liviu at opensips.org>; OpenSIPS users mailling list <users at lists.opensips.org>
Subject: Re: [OpenSIPS-Users] FW: Asynchronous operation for REST queries

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<mailto:users at lists.opensips.org>>; Ramachandran, Agalya (Contractor) <Agalya_Ramachandran at comcast.com<mailto: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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