I have faced when case when private var defined as $var(json_request) is share between different SIP messages.

In my case first time this var is used from registration processing route.

Then var with same name is used PUBLISH messge processing. And i be able to this value defined from registration processing.

I expecting that vars is not shared between threads and message handling routes for var defined as $var(name). Is that not true?

How i can prevent race condition between different message processing routes when two thread simultaneously change same variable?

Sergey