Function auth

test/proxyTokenReuse.test.js:621–623

(tok)

      const port = info.port;
      const auth = (tok) => fetch(`http://127.0.0.1:${port}/proxy/status`, {
        headers: { 'Authorization': `Bearer ${tok}` },
      });

      const ok = await auth(goodGrace);
      assert.equal(ok.status, 200, 'string grace token still accepted');