JavaScript Examples - Deny a request based on Geoip

Based on the country code, accessed through event.request.metadata["geoip_country_code"], the request is denied or not by event.deny().

async function firewallHandler(event){
// Access the country code through geoip
let countryCode = event.request.metadata["geoip_country_code"]
// Do some logic here
// In this example, we are blocking access from Brazil
if (countryCode === "BR"){
// Then, if it comes from any other country,
// the processing continues
addEventListener("firewall", (event)=>event.waitUntil(firewallHandler(event)));