Hello Giacomo,
here are the requested info:
1) unfortunately, I cannot give you this information as we copied the source from git branch 5.0, August 18th and put it in our own source control (Perforce)
2)1-2 requests per seconds seems ok, but as soon rate increases, problem appears
3) I cannot give you the configuration file as we have some sensible information in it. But we have the following configuration: SIP Proxy -> SIP Registrar. The SIP registrar is using http_async_client when a REGISTER is recieved (to register PUSH information from mobile app). Usually, this works fine with 1-2 requests per seconds, but starts to fails as soon as rate increases. When an INVITE is receivedm we also call http_async_client in order to send a PUSH notification to the callee. I never saw this request work as usually, there is a REGISTER and right after an INVITE done, and it seems that this cause http_async_client to fail.
I understand this information may not help you :-(
4) I configured 16 workers, but also tried with one. Kamailio is configured with 8 childrens and SHM_MEMORY=2048. Maybe the problem is related to kamailio childrens? I will try with only one children...
5) Upgrading to latest version 5.x will take me some time. I will try to do this by the end of the week.
6) traces with debug level 3 and curl verbosity on are the same as the one I sent you: when all is ok, the CApath is /etc/kamailio/ssl/ca/, and when it doesn't work, it shows CApath: /etc/kamailio/ssl/ca/.
Let me try with children set to 1 to verify if it is a multi-thread problem with the module. I will try to send you more logs.
Thx for your support
Giovanni
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