ReadyForRoomEvent (#665)

Co-authored-by: github-actions <41898282+github-actions[bot]@users.noreply.github.com>

Author: stephen-derosa

livekit-rtc/livekit/rtc/_proto/ffi_pb2.py

@@ -555,6 +555,11 @@ def on_participant_connected(participant):
         # start listening to room events
         self._task = self._loop.create_task(self._listen_task())
 
+        # Unblock the FFI server once this SDK is ready to receive room events.
+        ready_req = proto_ffi.FfiRequest()
+        ready_req.ready_for_room_event.room_handle = self._ffi_handle.handle
+        FfiClient.instance.request(ready_req)
+
     async def get_rtc_stats(self) -> RtcStats:
         if not self.isconnected():
             raise RuntimeError("the room isn't connected")