// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license. const addr = Deno.args[0] || "127.0.0.1:4500"; const [hostname, port] = addr.split(":"); const listener = Deno.listen({ hostname, port: Number(port) }); console.log("Server listening on", addr); for await (const conn of listener) { (async () => { const requests = Deno.serveHttp(conn); for await (const { respondWith, request } of requests) { const bar = request.headers.get("foo"); respondWith(new Response(bar)) .catch((e) => console.log(e)); } })(); }