function tryConnectModel()

in websocket-server/src/sessionManager.ts [118:152]

• 32 lines of code
• 6 McCabe index (conditional complexity)

function tryConnectModel() {
  if (!session.twilioConn || !session.streamSid || !session.openAIApiKey)
    return;
  if (isOpen(session.modelConn)) return;

  session.modelConn = new WebSocket(
    "wss://api.openai.com/v1/realtime?model=gpt-4o-realtime-preview-2024-12-17",
    {
      headers: {
        Authorization: `Bearer ${session.openAIApiKey}`,
        "OpenAI-Beta": "realtime=v1",
      },
    }
  );

  session.modelConn.on("open", () => {
    const config = session.saved_config || {};
    jsonSend(session.modelConn, {
      type: "session.update",
      session: {
        modalities: ["text", "audio"],
        turn_detection: { type: "server_vad" },
        voice: "ash",
        input_audio_transcription: { model: "whisper-1" },
        input_audio_format: "g711_ulaw",
        output_audio_format: "g711_ulaw",
        ...config,
      },
    });
  });

  session.modelConn.on("message", handleModelMessage);
  session.modelConn.on("error", closeModel);
  session.modelConn.on("close", closeModel);
}