[OpenSIPS-Users] first async(rest_post) timeout fail

[Koce]

Hello Liviu thank you for your time,you are correct I increased the 
timeout to 5 sec and once the connections were established everything 
was working as it should.
I feel foolish for this but I think i learned something.

Anyway here is the opensips.log with the extra logging just in case

Feb 26 13:52:25  /sbin/opensips[2114]: 
INFO:rest_client:start_async_http_req: curl_multi_timeout(): retry_time 
is 0ms
Feb 26 13:52:25  /sbin/opensips[2114]: 
INFO:rest_client:start_async_http_req: curl_multi_timeout(): retry_time 
is 2999ms
Feb 26 13:52:28  /sbin/opensips[2114]: 
INFO:rest_client:start_async_http_req: curl_multi_timeout() returned -1, 
pausing 500ms...
Feb 26 13:52:29  /sbin/opensips[2114]: 
ERROR:rest_client:start_async_http_req: timeout while connecting to 
'http://192.168.100.1:2080/jsonrpc' (3 sec)
Feb 26 13:52:29  /sbin/opensips[2114]: 
INFO:rest_client:start_async_http_req: curl_multi_timeout(): retry_time 
is 1ms
Feb 26 13:52:29  /sbin/opensips[2114]: 
INFO:rest_client:start_async_http_req: curl_multi_timeout(): retry_time 
is 2994ms
Feb 26 13:52:29  /sbin/opensips[2114]: RETURNED NOT NULL #xlog line for 
async_request
Feb 26 13:52:29  /sbin/opensips[2114]: 
INFO:rest_client:start_async_http_req: curl_multi_timeout(): retry_time 
is 1ms

> Hello koce!
>
> Most likely, the issue is due to your restricting "connection_timeout =
> 1" module parameter. To quote from libcurl's documentation [1]: /"You
> must not wait too long (more than a few seconds perhaps)". /This is why
> I chose that 500 ms pause time upon running into that error condition,
> which is basically 50% of your allowed blocking time already!
>
> To better understand how much libcurl expects you to wait, you can apply
> an extra logging patch:
>
> /git apply <(wget -qO -
> http://opensips.org/patches/rest_client_connect_timeout_logging.patch)
>
> /Please re-compile your rest_client and re-run the test, and we'll draw
> final conclusions afterwards!
>
> [1]: https://curl.haxx.se/libcurl/c/curl_multi_timeout.html
>
> Best regards,
>
> Liviu Chircu
> OpenSIPS Developer
> http://www.opensips-solutions.com
>
> On 23.02.2016 15:46, koce at mentalchallenge.tk wrote:
>> Hello I'm using OpenSIPS 2.1 latest from git and every time I call the
>> first async(rest_post) function from my script I experience
>> timeout,and the other calls to async(rest_post) after that point in
>> the script are OK, as if the first call is like a ping to the http
>> server it does not send any data to it,it only completes the TCP
>> handshake.
>>   But if I put a dummy rest_post() function in front of the first
>> async(rest_post) it will send the data that is assigned to it and
>> after that the first async(rest_post) call and the rest that follow
>> will execute as planned.
>> To test if there is something wrong with the server that I'm
>> connecting to I tried another server that had nothing to do with the
>> original just to see if I get the same result and YES the
>> async(rest_post) to that server failed but the other async(rest_post)
>> who are interacting with the original server executed without a hitch.
>> Also I think it's related to this
>> https://github.com/OpenSIPS/opensips/issues/493 which is closed.
>> Could this be a possible bug,or am I missing something obvious ?
>> Also I installed curl 7.47.1 just to make sure it wasn't libcurl in
>> question and the same scenario happened again.
>> the errors that I got in opensips.log
>> ====================
>> Feb 23 10:49:43 /sbin/opensips[25985]:
>> INFO:rest_client:start_async_http_req: curl_multi_timeout() returned
>> -1, pausing 500ms...
>> Feb 23 10:49:44 /sbin/opensips[25985]:
>> ERROR:rest_client:start_async_http_req: timeout while connecting to
>> 'http://192.168.100.3:2080/jsonrpc' (1 sec)
>> ====================
>> Feb 23 12:28:08 /sbin/opensips[26219]:
>> INFO:rest_client:start_async_http_req: curl_multi_timeout() returned
>> -1, pausing 500ms...
>> Feb 23 12:28:08 /sbin/opensips[26219]:
>> ERROR:rest_client:start_async_http_req: timeout while connecting to
>> 'http://192.168.100.2:80/jsonrpc' (1 sec)
>> ====================
>> NOTE: the IP's are substituted from the real ones which are public.
>> I'm attaching 2 flows from wireshark.
>>
>>
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