AWS IOS IoT 示例 MQTT 连接失败答案

【问题标题】：AWS IOS IoT sample MQTT connection failedAWS IOS IoT 示例 MQTT 连接失败
【发布时间】：2020-08-07 06:26:31
【问题描述】：

我一直在尝试从 https://github.com/awslabs/aws-sdk-ios-samples/tree/master/IoT-Sample/Swift 运行 AWS IOS IoT 示例。但是，当我单击应用程序中的“连接”按钮时，出现以下错误。 MQTT 连接失败。我该如何解决这个问题？

2019-08-20 20:19:29:065 IoTSampleSwift[87568:16809125] Attempting to 
reconnect.
connection status = 1
Connecting...
2019-08-20 20:19:29:065 IoTSampleSwift[87568:16809125] user metadata is : ?SDK=iOS&Version=2.10.2
2019-08-20 20:19:29:065 IoTSampleSwift[87568:16809125] Metrics collection is: Enabled
2019-08-20 20:19:29:066 IoTSampleSwift[87568:16809130] <<<NSThread: 0x6000029d2500>{number = 9, name = (null)}>> Initializing MQTTEncoder and MQTTDecoder streams
2019-08-20 20:19:29:066 IoTSampleSwift[87568:16809130] opening encoder stream.
2019-08-20 20:19:29:067 IoTSampleSwift[87568:16809130] opening decoder stream.
2019-08-20 20:19:29.067789-0700 IoTSampleSwift[87568:16809130] CFNetwork SSLHandshake failed (-9810)
2019-08-20 20:19:29.067943-0700 IoTSampleSwift[87568:16809130] TCP Conn 0x0 SSLHandshake failed (-9810)
2019-08-20 20:19:29:068 IoTSampleSwift[87568:16809130] MQTT session error, code: 3
2019-08-20 20:19:29:068 IoTSampleSwift[87568:16809130] closing encoder stream.
2019-08-20 20:19:29:068 IoTSampleSwift[87568:16809130] closing decoder stream.
2019-08-20 20:19:30:071 IoTSampleSwift[87568:16809130] MQTTSessionEventConnectionError: Received an MQTT session connection error
connection status = 5
Connection Error

我的 IoT 政策如下所示：

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Action": "iot:*",
      "Resource": "*"
    }
  ]
}

我的 Unauth Cognito 角色如下所示：

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Action": [
                "mobileanalytics:PutEvents",
                "cognito-sync:*",
                "cognito-identity:*",
                "dynamodb:*",
                "cloudwatch:*",
                "events:*",
                "iot:GetThingShadow",
                "iot:UpdateThingShadow",
                "iot:Subscribe",
                "iot:Connect",
                "iot:AttachPrincipalPolicy",
                "iot:CreateKeysAndCertificate",
                "iot:CreateCertificateFromCsr"
            ],
            "Resource": [
                "*"
            ]
        }
    ]
}

【问题讨论】：

您能否分享有关您用于连接的代码和您正在连接的 IoT Core 上的应用程序的更多详细信息？可能是这方面的错误配置。

标签： amazon-web-services

【解决方案1】：

如果您的角色和策略正确，请确保您在应用中的端点 URL 采用以下格式

https://xxxxxxx-ats.iot.REGION.amazonaws.com

它应该在前面添加https://，否则它会继续抛出同样的错误。

【讨论】：