The following is an advanced feature and requires editing the C++ source code of the plugin.
Alongside Remote Procedure Calls, Strix provides the option to send Relay messages. Relay messages are like RPCs, but do not name a given function on the recipient. They confer some arguments as a message.
Before a client can receive a Relay message, it must register a Relay message notification handler. Currently Strix does not provide a generic handler, so C++ code is needed.