Obtaining Client IP Address

addEventListener('fetch', event => {
  event.respondWith(handleRequest(event.request));
});

function handleRequest(request) {
  // Obtain the client IP through the EO-Client-IP header
  const ip = request.headers.get('EO-Client-IP') || '';
  // Respond with JSON data
  return new Response(JSON.stringify({ ip }), {
    headers: { 'content-type': 'application/json' },
  });
}