More refactoring to clean up code, and add a gate function to make sure we do not handle OK packets we did not expect. This hardens up a few potential edge cases around security, since such messages might be used to e.g. pollute a cache and DOS under certain conditions.

node/Multicaster.cpp

@@ -253,6 +253,7 @@ void Multicaster::send(
 					outp.append((uint32_t)gatherLimit);
 					if (com)
 						com->serialize(outp);
+					RR->node->expectReplyTo(outp.packetId());
 					RR->sw->send(outp,true);
 				}
 			}