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--- cookbooks:devel:core [2020/11/26 16:28]
miconda [async_workers]
+++ cookbooks:devel:core [2020/11/26 16:38]
miconda [event_route]
@@ Line 764: / Line 764: @@
 ==== async_workers ====
-Specify how many child processes to create for asynchronous execution in the group "default". These are processes that can receive tasks from various components (e.g, modules such as async, acc, sqlops) and execute them locally, which is different process than the task sender.
+Specify how many child processes (workers) to create for asynchronous execution in the group "default". These are processes that can receive tasks from various components (e.g, modules such as async, acc, sqlops) and execute them locally, which is different process than the task sender.
 Default: 0 (asynchronous framework is disabled).
@@ Line 772: / Line 772: @@
 <code>
     async_workers=4
+</code>
+==== async_nonblock ====
+Set the non-block mode for the internal sockets used by default group of async workers.
+Default: 0
+Example:
+<code>
+    async_nonblock=1
+</code>
+==== async_usleep ====
+Set the number of microseconds to sleep before trying to receive next task (can be useful when async_nonblock=1).
+Default: 0
+Example:
+<code>
+    async_usleep=100
 </code>
@@ Line 3427: / Line 3451: @@
 }
 </code>
+  * **event_route[core:pre-routing]** - executed by core on receiving SIP traffic before running request_route or reply_route.
+    * if drop is used, then the message is not processed further with request_route or reply_route in the same process. This can be useful together with sworker module which can delegate the processing to another worker.
+<code c>
+async_workers_group="name=reg;workers=4"
+...
+event_route[core:pre-routing] {
+    xinfo("pre-routing rules\n");
+    if(is_method("REGISTER")) {
+        # delegate processing of REGISTERs to a special group of workers
+        if(sworker_task("reg")) {
+            drop;
+        }
+    }
+}
+</code>
 === Module Event Routes ===

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