### Description
KEMI onsend_route is not called unless there is a placeholder/dummy routing block. ``` ## without this block, core will never call KEMI->onsend_route onsend_route { ## do nothing } ``` ### Troubleshooting
#### Reproduction 1. In KEMI create ksr_onsend_route(). Observe that this function is never invoked.
2. Add a route block: ``` onsend_route { ## do nothing } ``` Now observe, that KEMI ksr_onsend_route() is called.
#### Debugging Data
#### Log Messages
#### SIP Traffic
### Possible Solutions Not really a problem, just a surprise to the KEMI user. Possibly, document that in order for the KEMI function to be called, the configuration file needs a dummy routing block for onsend_route.
### Additional Information The reason is the following logic: onsend.h: `ret=keng->froute(orig_msg, ONSEND_ROUTE, NULL, NULL);`
This line is called only if `onsend_rt.rlist[DEFAULT_RT]` is non-NULL, but this array is initialized only if the `onsend_route` block exists.
* **Kamailio Version** - 5.1, master
* **Operating System**: Linux CentOS 7.4