cacheall

cacheall.js

/* cacheall */

async function handleRequest(event) {
  let request = event.request
  let cacheKey = request
  let url = new URL(request.url)

  if (request.method.toUpperCase() === 'POST') {
    let string = '';
    (new Uint8Array(await request.arrayBuffer())).forEach(
      (byte) => { string += String.fromCharCode(byte) }
    )

    string = await encode_safe_64(string)

    url += '?dns=' + string

    cacheKey = new Request(url, {
      headers: request.headers,
      method: 'GET',
    })
  } else {
    cacheKey = request
  }

  response = await fetch(cacheKey, { cf: { cacheEverything: true } })
  return response

}

addEventListener('fetch', event => {
    event.passThroughOnException()
    return event.respondWith(handleRequest(event))
})

async function encode_safe_64(buffer) {
  return btoa(buffer)
    .replace(/\+/g, '-') // Convert '+' to '-'
    .replace(/\//g, '_') // Convert '/' to '_'
    .replace(/=+$/, ''); // Remove ending '='
}