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#!/usr/bin/env -S deno run --allow-net=localhost:8080,deno.land
import { Command } from "https://deno.land/x/cliffy@v0.20.1/command/mod.ts";import { serve } from "https://deno.land/std@0.117.0/http/server.ts";
await new Command()  .name("reverse-proxy")  .description("A simple reverse proxy example cli.")  .version("v1.0.0")  .option("-p, --port <port:number>", "The port number for the local server.", {    default: 8080,  })  .option("-h, --host [hostname]", "The host name for the local server.", {    default: "localhost",  })  .arguments("[domain]")  .action(async ({ port, host }, domain = "deno.land") => {    console.log(`Listening on http://${host}:${port}`);    await serve((req: Request) => {      const url = new URL(req.url);      url.protocol = "https:";      url.hostname = domain;      url.port = "443";
      console.log("Proxy request to:", url.href);      return fetch(url.href, {        headers: req.headers,        method: req.method,        body: req.body,      });    }, { addr: `${host}:${port}` });  })  .parse();