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const addr = Deno.args[0] || "127.0.0.1:4500";const [hostname, port] = addr.split(":");const tcp = Deno.listen({ hostname, port: Number(port) });console.log("Server listening on", addr);
class Http {  id;  constructor(id) {    this.id = id;  }  [Symbol.asyncIterator]() {    return {      next: async () => {        const reqEvt = await Deno.core.opAsync("op_http_accept", this.id);        return { value: reqEvt ?? undefined, done: reqEvt === null };      },    };  }}
for await (const conn of tcp) {  const id = Deno.core.ops.op_http_start(conn.rid);  const http = new Http(id);  (async () => {    for await (const req of http) {      if (req == null) continue;      const { 0: stream } = req;      await Deno.core.opAsync(        "op_http_write_headers",        stream,        200,        [],        "Hello World",      );      Deno.core.close(stream);    }  })();}