Audio Keep Alive

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const WebSocket = require("ws");
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// Assuming 'headers' is already defined for authorization
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const ws = new WebSocket("wss://api.deepgram.com/v1/listen", { headers });
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// Assuming 'ws' is the WebSocket connection object
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const keepAliveMsg = JSON.stringify({ type: "KeepAlive" });
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ws.send(keepAliveMsg);

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const WebSocket = require("ws");
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const authToken = "DEEPGRAM_API_KEY"; // Replace 'DEEPGRAM_API_KEY' with your actual authorization token
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const headers = {
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  Authorization: `Token ${authToken}`,
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};
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// Initialize WebSocket connection
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const ws = new WebSocket("wss://api.deepgram.com/v1/listen", { headers });
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// Handle WebSocket connection open event
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ws.on("open", function open() {
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  console.log("WebSocket connection established.");
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  // Send audio data (replace this with your audio streaming logic)
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  // Example: Read audio from a microphone and send it over the WebSocket
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  // For demonstration purposes, we're just sending a KeepAlive message
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  setInterval(() => {
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    const keepAliveMsg = JSON.stringify({ type: "KeepAlive" });
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    ws.send(keepAliveMsg);
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    console.log("Sent KeepAlive message");
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  }, 3000); // Sending KeepAlive messages every 3 seconds
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});
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// Handle WebSocket message event
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ws.on("message", function incoming(data) {
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  console.log("Received:", data);
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  // Handle received data (transcription results, errors, etc.)
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});
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// Handle WebSocket close event
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ws.on("close", function close() {
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  console.log("WebSocket connection closed.");
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});
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// Handle WebSocket error event
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ws.on("error", function error(err) {
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  console.error("WebSocket error:", err.message);
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});
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// Gracefully close the WebSocket connection when done
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function closeWebSocket() {
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  const closeMsg = JSON.stringify({ type: "CloseStream" });
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  ws.send(closeMsg);
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}
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// Call closeWebSocket function when you're finished streaming audio
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// For example, when user stops recording or when the application exits
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// closeWebSocket();

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const { createClient, LiveTranscriptionEvents } = require("@deepgram/sdk");
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const live = async () => {
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  const deepgram = createClient("DEEPGRAM_API_KEY");
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  let connection;
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  let keepAlive;
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  const setupDeepgram = () => {
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    connection = deepgram.listen.live({
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      model: "nova-3",
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      utterance_end_ms: 1500,
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      interim_results: true,
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    });
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    if (keepAlive) clearInterval(keepAlive);
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    keepAlive = setInterval(() => {
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      console.log("KeepAlive sent.");
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      connection.keepAlive();
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    }, 3000); // Sending KeepAlive messages every 3 seconds
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    connection.on(LiveTranscriptionEvents.Open, () => {
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      console.log("Connection opened.");
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    });
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    connection.on(LiveTranscriptionEvents.Close, () => {
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      console.log("Connection closed.");
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      clearInterval(keepAlive);
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    });
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    connection.on(LiveTranscriptionEvents.Metadata, (data) => {
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      console.log(data);
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    });
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    connection.on(LiveTranscriptionEvents.Transcript, (data) => {
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      console.log(data.channel);
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    });
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    connection.on(LiveTranscriptionEvents.UtteranceEnd, (data) => {
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      console.log(data);
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    });
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    connection.on(LiveTranscriptionEvents.SpeechStarted, (data) => {
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      console.log(data);
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    });
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    connection.on(LiveTranscriptionEvents.Error, (err) => {
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      console.error(err);
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    });
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  };
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  setupDeepgram();
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};
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live();