"async.forEach“itetarion停止，直到请求得到输出

async.forEach(array|object, iterator, callback)

const async = require('async');
const request = require('request');

const urls = ['https://example.com', 'https://example.org', 'https://example.net'];

async.forEach(urls, function(url, callback) {
    request(url, function(error, response, body) {
        if (error) {
            callback(error);
        } else {
            console.log('Response from ' + url + ': ' + body);
            callback();
        }
    });
}, function(error) {
    if (error) {
        console.error('An error occurred: ' + error);
    } else {
        console.log('All requests completed.');
    }
});