Change state to JOINED before sending JoinResponse (#674)

* Send room metadata as long as participant is not disconnected

* Change state to JOINED before sending join response

pkg/rtc/participant.go

@@ -502,9 +502,6 @@ func (p *ParticipantImpl) HandleOffer(sdp webrtc.SessionDescription) (answer web
 		}
 	}
 
-	if p.State() == livekit.ParticipantInfo_JOINING {
-		p.updateState(livekit.ParticipantInfo_JOINED)
-	}
 	prometheus.ServiceOperationCounter.WithLabelValues("answer", "success", "").Add(1)
 
 	return

pkg/rtc/participant_signal.go

@@ -37,6 +37,10 @@ func (p *ParticipantImpl) SendJoinResponse(
 	iceServers []*livekit.ICEServer,
 	region string,
 ) error {
+	if p.State() == livekit.ParticipantInfo_JOINING {
+		p.updateState(livekit.ParticipantInfo_JOINED)
+	}
+
 	// send Join response
 	return p.writeMessage(&livekit.SignalResponse{
 		Message: &livekit.SignalResponse_Join{