暂停PoPPETER进程直到全局var值从false变为字符串

我在nodejs服务器中运行puppeter…我们的想法是打开一个页面,通过socket.io读取并发送验证码给用户,当收到用户输入的值验证码后,就可以继续进行木偶制作了。这是我的代码的简化版本

   var captcha = false ;

    io.on('connection' , function(socket){

        socket.on('start_puppeteer' , function (data) {
            io.emit('push_msg' , {text : 'starting puppeteer  ....  '  });
            run(io);
        })

        socket.on('get_captcha_from_client' , function (data) {

            captcha = data.text ;
            console.log( 'capthca set : ' + captcha);
        })

    });

    function get_captcha() {
        return new Promise(function(resolve , reject ) {
            if(captcha === false )
                reject(captcha );
            else
                resolve(captcha);
        });
    }


async function run(io) {
    const browser = await puppeteer.launch();
    const page = await browser.newPage();

    await page.goto('http://localhost');

    console.log( ' sending captcha to client ' );

    io.emit('send_captcha_to_client' , {text : 'captcha text'  });

    var captcha = await get_captcha();

    console.log( ' captcha confirm -> ' + captcha );

    browser.close();
}

问题是,即使设置了验证码,代码也不会移动,我也无法获得 captcha confirm 在控制台

$ node pop.js
 sending captcha to client
(node:9356) UnhandledPromiseRejectionWarning: false
(node:9356) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch().
 (rejection id: 3)
(node:9356) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.
capthca set : 1234