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I want to know why this is happening. I’m using text stream handler using lk.transcription to receive messages. The first text is being captured correctly on local. But when it comes to deployed, it’s a 50% chance the first message does not appear or get captured in text stream handler. Do you know why this is happening? Is there any fix

Hey there! It sounds like you're running into an issue where the first message isn't showing up in the text stream handler when using

lk.transcription

in a deployed environment. This can happen for a few reasons, so let’s walk through some possibilities together: • Message Finalization: Sometimes the first message isn’t marked as final, so it gets buffered instead of sent right away. Double-check that the

isFinal

flag is set properly. • Stream Initialization: The text stream handler might be set up after the first message is sent. Make sure the handler is ready before any messages start coming through. • Network Conditions: In a deployed environment, latency or packet loss could cause that initial message to get dropped. It might help to add retry logic or ensure your delivery method is reliable. • Segment Handling: If your first message is part of a multi-segment stream, it might not show up until all segments arrive. Check that your handler is correctly processing these segments. • Participant Identity: Confirm that the sender’s identity is set correctly so messages route as expected. Here are some steps you can try to fix this: 1. Make sure the first message is marked as final and that partial messages are handled properly. 2. Verify the handler is registered before any messages are sent. 3. Test under different network conditions to spot latency issues and add retry logic if needed. 4. Review your code to ensure it handles message segments the right way. 5. Double-check that the participant identity is set correctly. If you want to share a bit more about your setup or how you’ve implemented this, I’d be happy to help you troubleshoot further! Sources: Sending text | LiveKit Docs | Text and transcriptions | LiveKit Docs | VoiceAgent/Chat/Receive/TranscriptionStreamReceiver.swift | Text and transcriptions | LiveKit Docs | Sending text | LiveKit Docs

Can you answer me the above query

Hey there! It sounds like the first message not showing up in the text stream handler when using

lk.transcription

in your deployed environment can be a bit tricky. Here are a few things that might be causing it: • Message Finalization: Sometimes the first message isn’t marked as final, so it gets held back instead of being sent right away. Double-check that the

isFinal

flag is set correctly. • Stream Initialization: The text stream handler might be getting registered after the first message goes out. Make sure your handler is ready and listening before any messages start coming through. • Network Conditions: If there’s any latency or packet loss in your deployed setup, the first message could get lost. Adding retry logic or ensuring reliable delivery can help here. • Segment Handling: If your first message is part of a multi-segment stream, it might not show up until all parts arrive. Check that your handler is correctly piecing together those segments. • Participant Identity: It’s also good to verify that the sender’s identity is set properly so messages route as expected. Here’s what you can try to fix this: 1. Make sure the first message is marked final and that partial messages are handled smoothly. 2. Confirm your handler is registered before any messages are sent out. 3. Test your setup under simulated network conditions to catch latency issues and add retry logic if needed. 4. Review how your code handles message segments to ensure everything’s processed correctly. 5. Double-check that participant identities are set up properly. If you want to share more about your specific setup or implementation, I’d be happy to help you troubleshoot further!

How does text stream reader work.

The TextStreamReader in LiveKit is here to make handling text streams in real-time super smooth and flexible, no matter your use case: • Reading Approach: You can either process the text stream bit by bit using an async iterator or wait until the whole stream arrives and handle it all at once—whatever works best for you. • Error Handling: It’s got solid error handling built in to gracefully deal with any unexpected stream closures or hiccups. • Progress Tracking: Some versions even support progress tracking, which is great if you want to keep your UI updated while streaming. • Concurrency and Performance: It supports multiple streams running at the same time, so it’s perfect for high-demand apps. • Cross-Language Support: You’ll find it available in Swift, Node.js, Go, and more, so you get consistent functionality no matter your environment. Example Usage:

room.registerTextStreamHandler('my-topic', (reader, participantInfo) => {
    // Handle each chunk as it comes in
    for await (const chunk of reader) {
        console.log(`Next chunk: ${chunk}`);
    }

    // Or, read the entire text once the stream finishes
    const text = await reader.readAll();
    console.log(`Received text: ${text}`);
});

The TextStreamReader is a great fit for real-time stuff like chat or live updates, helping you stream data efficiently and reliably. If you want to dive deeper or need a hand setting it up, just let me know—I’m here to help!

I’ve seems both backend and front end logs. Backend sends the message first and after the room is successfully connected on front end. The message appears Now in deployedwont that cause loss of data. How should we fix it

Hey there! To help you avoid losing any data when the backend sends messages before the frontend room is connected, here are some friendly tips you can try out: • Reliable Delivery: Try using reliable message delivery methods that include retrying to send important messages if they don’t get through the first time. • Backend Confirmation: It’s a good idea to have the backend wait until the frontend confirms it’s connected before sending messages. You can check this by looking at something like

room.connectionState

. • Message Acknowledgments: Setting up a system where the frontend lets the backend know it received messages can really help. That way, the backend can resend any messages that didn’t get acknowledged. • Request Missed Messages: When the frontend connects, it can ask the backend for any messages it might have missed while it was offline. • Track Connection State: The backend keeping an eye on whether the frontend is connected or not can prevent messages from being sent too early. Following these steps can really help make sure your important messages get through safely without any hiccups. If you want, I’m here to help you with setting any of this up—just let me know! Sources: Data messages | LiveKit Docs | Web and mobile frontends | LiveKit Docs

In reader.read all If 1 message appears before the connection state is connected and get another message appears just after it’s connected. Which message will be shown in UI first message or second message which was delivered just before the connection is set

I don't have the answer you're looking for. You could also try asking your question: • in one of the other Slack channels or • to https://deepwiki.com/livekit/livekit_composite which is trained on all LiveKit source code If you find the answer, please post it here to help others!

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