This is a cloudflare worker that implements the pkarr relay interface from https://github.com/Nuhvi/pkarr .
Source code is adapted from https://github.com/damianesteban/cloudflare-workers-rust-crud-api .
wrangler tool from cloudflare https://developers.cloudflare.com/workers/wrangler/install-and-update/
npx wrangler login # log in to cloudflare
npx wrangler dev # local development
npx wrangler deploy # deploy to a domain