asdf plugin-add deno
asdf list all deno
asdf install deno 1.15.3
asdf global deno 1.15.3

async function handle(conn: Deno.Conn) {
    const httpConn = Deno.serveHttp(conn);
    for await (const requestEvent of httpConn) {
        const url = new URL(requestEvent.request.url);
        console.log(`path: ${url.pathname}`);
        await requestEvent.respondWith(
            new Response("hello world", {
            status: 200,
            }),
        );
    }
}
 
const server = Deno.listen({ port:11111});
 
for await (const conn of server) {
    console.log('listen');
    handle(conn);
}

const server = Deno.listen({ port: 11111 });
 
let cnt=0;
 
while (true) {
  try {
    const conn = await server.accept();
    (async () => {
      const httpConn = Deno.serveHttp(conn);
      while (true) {
        try {
          const requestEvent = await httpConn.nextRequest();
          if(requestEvent === null){
            break;
          }
          const url = new URL(requestEvent.request.url);
          console.log(`path: ${url.pathname} : ${cnt++}`);
          await requestEvent.respondWith(
            new Response("hello world", {
            status: 200,
            }),
          );
 
        } catch (err) {
          // the connection has finished
          console.log("the connection has finished");
          break;
        }
      }
    })();
  } catch (err) {
    // The listener has closed
    console.log("The listener has closed")
    break;
  }
}