scraper-for-joe.js

const publicIp = require('public-ip')
const bent = require('bent')

const get = bent('json', 'https://my-lambda-url')

exports.handler = async function http (req) {
  let { retries, ips } = req.queryStringParameters
  const ip = await publicIp.v4()
  if (ips) ips = ips.split(',')
  else ips = []
  ips.push(ip)
  retries = parseInt(retries)
  if (retries) {
    ips = await get(`?retries=${retries-1}&ips=${ips.join(',')}`)
  }
  return {
    headers: {
      'cache-control': 'no-cache, no-store, must-revalidate, max-age=0, s-maxage=0',
      'content-type': 'application/json'
    },
    body: JSON.stringify(ips, null, 2)
  }
}