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// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.// Used for benchmarking Deno's networking.// TODO(bartlomieju): Replace this with a real HTTP server once// https://github.com/denoland/deno/issues/726 is completed.// Note: this is a keep-alive server.const addr = Deno.args[0] || "127.0.0.1:4500";const [hostname, port] = addr.split(":");const listener = Deno.listen({ hostname, port: Number(port) });const response = new TextEncoder().encode(  "HTTP/1.1 200 OK\r\nContent-Length: 12\r\n\r\nHello World\n",);async function handle(conn: Deno.Conn): Promise<void> {  const buffer = new Uint8Array(1024);  try {    while (true) {      await conn.read(buffer);      await conn.write(response);    }  } catch (e) {    if (      !(e instanceof Deno.errors.BrokenPipe) &&      !(e instanceof Deno.errors.ConnectionReset)    ) {      throw e;    }  }  conn.close();}
console.log("Listening on", addr);for await (const conn of listener) {  handle(conn);}