Function createBrowserInstance

scripts/start-browser.js:153–206

(instanceId)

// Create browser instance
async function createBrowserInstance(instanceId) {
  try {
    const client = await CDP({
      host: '127.0.0.1',
      port: 9222
    });

    // Enable required domains
    await client.Runtime.enable();
    await client.Page.enable();
    await client.Network.enable();
    await client.Input.enable();

    // Navigate to blank page initially
    await client.Page.navigate({ url: 'about:blank' });

    const instance = {
      id: instanceId,
      client,
      connectedClients: new Set()
    };

    browserInstances.set(instanceId, instance);

    // Set up screenshot streaming
    const screenshotInterval = setInterval(async () => {
      try {
        const { data } = await client.Page.captureScreenshot({
          format: 'jpeg',
          quality: 80
        });

        // Send screenshot to all connected clients
        instance.connectedClients.forEach(ws => {
          if (ws.readyState === 1) { // OPEN
            ws.send(JSON.stringify({
              type: 'screenshot',
              data: data,
              timestamp: Date.now()
            }));
          }
        });
      } catch (error) {
        console.error('Screenshot error:', error);
        clearInterval(screenshotInterval);
      }
    }, 100); // 10 FPS

    return instance;
  } catch (error) {
    console.error('Failed to create browser instance:', error);
    throw error;
  }
}

// Initialize Chrome when module loads
let chromeProcess = null;