worker-http-proxy.js

proxy.js

const PASSWORD = 'helloworld';

export default {
  async fetch(request) {
    const { searchParams } = new URL(request.url);
    const target = searchParams.get('url');
    const key = searchParams.get('psw');

    if (PASSWORD && key !== PASSWORD) {
      return new Response('Unauthorized', { status: 401 });
    }

    if (!target || !/^https?:\/\//.test(target)) {
      return new Response('Invalid target URL', { status: 400 });
    }

    try {
      const resp = await fetch(target, {
        method: 'GET',
        headers: {
          'User-Agent': request.headers.get('User-Agent') || 'Mozilla/5.0',
        },
      });

      const headers = new Headers(resp.headers);
      headers.set('access-control-allow-origin', '*'); // CORS

      return new Response(resp.body, {
        status: resp.status,
        headers
      });
    } catch (err) {
      return new Response('Fetch error: ' + err.message, { status: 502 });
    }
  }
};