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If I’m going to disconnect a user from a session —...
# ask-ai
s
If I’m going to disconnect a user from a session — for example, because they close the browser tab — and then I want to rejoin the same session with the same identity, what’s the correct way to handle that?
t
Thanks for reaching out, Roman. I'm an AI assistant and I'm here to help. Give me a moment while I research this topic.
To rejoin a LiveKit session with the same identity after disconnecting, follow these steps: 1. Handle the Disconnection Event: When a disconnect occurs, stop local tracks to clean up resources. This can be done using the JavaScript SDK's 
handleDisconnect
method. 2. Rejoin the Session: Manually call 
join()
with the same identity. The LiveKit server will automatically disconnect any existing session with the same identity, allowing the new session to take over. 3. Listen for Reconnection Events: Use the SDK's 
Reconnecting
and 
Reconnected
events to provide user feedback and handle reconnection logic. 4. Resume Media Negotiation: After rejoining, unpublish and republish tracks to ensure media is correctly renegotiated and reconnected. The server ensures that only one connection per identity exists, so reconnecting with the same identity will automatically disconnect any previous session. Sources: src/connectionHelper/checks/reconnect.ts | Rooms, participants, and tracks | LiveKit Docs | Connecting to LiveKit | LiveKit Docs
s
I'm getting when trying to reconnect to the same room 
ignoring byte stream with topic 'lk.agent.pre-connect-audio-buffer', no callback attached
t
Hey there! That error 
ignoring byte stream with topic 'lk.agent.pre-connect-audio-buffer', no callback attached
pops up when a byte stream arrives on this topic but there’s no handler set up to catch it. This often happens during reconnection if the handler wasn’t properly re-registered. Here’s how you can fix it: 1. Register the Handler: Make sure your code sets up a byte stream handler for 
lk.agent.pre-connect-audio-buffer
every time the room connects or reconnects. For example:
Copy code
room.registerByteStreamHandler("lk.agent.pre-connect-audio-buffer", (reader, participantId) => {
    // Handle the incoming byte stream
    // Use reader to read the audio data
});
2. Re-register After Reconnection: If the room disconnects and then reconnects, keep an eye on the connection state and re-register the handler once you’re connected again. Just make sure the handler is set up before or right after connecting to the room. If you want, feel free to share more about your setup or code flow—I’m here to help! Sources: livekit-agents/livekit/agents/voice/room_io/_input.py | livekit-android-sdk/src/main/java/io/livekit/android/room/datastream/incomi... | src/room/Room.ts
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