关于node.js：具有JavaScript SDK和Raspberry Pi连接错误的AWS IoT

AWS IoT with the JavaScript SDK and Raspberry Pi connection error

我正在尝试连接到我的"东西"，即使用node.js在我的AWS账户中注册的Raspberry Pi。所有凭据文件都存储在正确的路径(certs文件夹)中。用于node.js的aws.iot SDK安装在Raspberry Pi的~/deviceSDK'目录中。这是代码。

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var awsIot = require('aws-iot-device-sdk');

var device = awsIot.device({
keyPath: '/home/pi/deviceSDK/certs/private.pem.key',
certPath: '/home/pi/deviceSDK/certs/certificate.pem.crt',
caPath: '/home/pi/deviceSDK/certs/caCert.crt',
clientId: 'Raspberry',
region: 'us-west-2'
});

device.on('connect', function() {
console.log('connected');
});

运行代码时，收到以下错误：

Error: Invalid connect options supplied.

我在这个问题上进行了搜索，发现应该在连接选项下添加主机。因此，代码更新如下：

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var awsIot = require('aws-iot-device-sdk');

var device = awsIot.device({
keyPath: '/home/pi/deviceSDK/certs/private.pem.key',
certPath: '/home/pi/deviceSDK/certs/certificate.pem.crt',
caPath: '/home/pi/deviceSDK/certs/caCert.crt',
clientId: 'Raspberry',
region: 'us-west-2',
host: 'https://XXXXXXXXXX.iot.us-west-2.amazonaws.com'
});

device.on('connect', function() {
console.log('connected');
});

AWS显然在其中提供了XXXXXXXXXXX作为Rest API端点，以便与我账户中的"事物"进行交互，如下图所示。

我的设备端点

现在我收到此错误：

events.js:183
throw er; // Unhandled 'error' event
^

Error: getaddrinfo ENOTFOUND
https://xxxxxxxxx.iot.us-west-2.amazonaws.com
https://xxxxxxxxxx.iot.us-west-2.amazonaws.com:8883

有什么问题吗？感谢您的帮助。