Script example: Add headers to response

In this example we'll show you how to you add additional headers to your request such as additional cookies.

Create Script

Route: cookie-test

Script contents:

addEventListener("fetch", event => {
  event.respondWith(fetchAndApply(event.request));
});

async function fetchAndApply(request) {
  const response = await fetch(request);

  const modifiedHeaders = new Headers(response.headers);

  modifiedHeaders.append("Set-Cookie", "Value 1");
  modifiedHeaders.append("Set-Cookie", "Value 2");

  const init = {
    status: response.status,
    statusText: response.statusText,
    headers: modifiedHeaders
  };

 const modifiedResponse = new Response(response.body, init);
 return modifiedResponse;
}

Accessing your Script

Once the above has been created, you can access your script using any of the delivery domains on your account. In my example, I can access this script with https://sitehash.stackpathcdn.com/cookie-test