export default {
  async fetch(req, env) {
    const res = await fetch(
      \`https://rtc.live.cloudflare.com/v1/turn/keys/\${env.TURN_KEY_ID}/credentials/generate\`,
      { method:'POST',
        headers:{'Authorization':\`Bearer \${env.TURN_API_TOKEN}\`,'Content-Type':'application/json'},
        body: JSON.stringify({ttl:3600}) }
    );
    const data = await res.json();
    return new Response(JSON.stringify(data),
      {headers:{'Content-Type':'application/json','Access-Control-Allow-Origin':'*','Cache-Control':'max-age=3000'}});
  }
};

הגדר 2 משתני סביבה ב-Worker: TURN_KEY_ID ו-TURN_API_TOKEN מ-Cloudflare Dashboard → Realtime → TURN Keys