diff --git a/src/lib/webrtc/broadcaster.ts b/src/lib/webrtc/broadcaster.ts
index 96651a9..497f486 100644
--- a/src/lib/webrtc/broadcaster.ts
+++ b/src/lib/webrtc/broadcaster.ts
@@ -3,6 +3,7 @@ import {
   generateRoomCode,
   joinSignalingChannel,
   sendSignal,
+  waitForSignalingReady,
   ICE_SERVERS,
   type SignalMessage,
 } from './signaling';
diff --git a/src/lib/webrtc/signaling.ts b/src/lib/webrtc/signaling.ts
index fb07734..65dd22c 100644
--- a/src/lib/webrtc/signaling.ts
+++ b/src/lib/webrtc/signaling.ts
@@ -6,7 +6,8 @@ export type SignalMessage =
   | { type: 'viewer-leave'; viewerId: string }
   | { type: 'offer'; viewerId: string; sdp: RTCSessionDescriptionInit }
   | { type: 'answer'; viewerId: string; sdp: RTCSessionDescriptionInit }
-  | { type: 'ice'; viewerId: string; from: 'broadcaster' | 'viewer'; candidate: RTCIceCandidateInit };
+  | { type: 'ice'; viewerId: string; from: 'broadcaster' | 'viewer'; candidate: RTCIceCandidateInit }
+  | { type: 'frame'; dataUrl: string; ts: number };
 
 const readyChannels = new WeakMap<RealtimeChannel, Promise<void>>();