Alexa.Discovery响应: Alexa未检测到设备

Question

我正在使用AWS Lambda实现我的Alexa Home技能。

当我尝试在Alexa Skil测试页面上检测新设备时，我收到了以下请求：

{directive={header={namespace=Alexa.Discovery, name=Discover, payloadVersion=3, messageId=0160c7e7-031f-47ee-a1d9-a23f38f87a9e}, payload={scope={type=BearerToken, token=...}}}}

我用以下几点来回应：

{
    "event": {
        "payload": {
            "endpoints": [
                {
                    "displayCategories": [
                        "SMARTPLUG"
                    ],
                    "capabilities": [
                        {
                            "type": "AlexaInterface",
                            "interface": "Alexa",
                            "version": "3"
                        },
                        {
                            "type": "AlexaInterface",
                            "interface": "Alexa.PowerController",
                            "version": "3",
                            "properties": {
                                "retrievable": true,
                                "supported": [
                                    {
                                        "name": "powerState"
                                    }
                                ],
                                "proactivelyReported": true
                            }
                        },
                        {
                            "type": "AlexaInterface",
                            "interface": "Alexa.EndpointHealth",
                            "version": "3",
                            "properties": {
                                "retrievable": true,
                                "supported": [
                                    {
                                        "name": "connectivity"
                                    }
                                ],
                                "proactivelyReported": true
                            }
                        }
                    ],
                    "manufacturerName": "mirko.io",
                    "endpointId": "ca84ef6d-53b1-430a-8a5e-a62f174eac5e",
                    "description": "mirko.io forno (id: ca84ef6d-53b1-430a-8a5e-a62f174eac5e)",
                    "friendlyName": "forno"
                }
            ]
        },
        "header": {
            "payloadVersion": "3",
            "namespace": "Alexa.Discovery",
            "name": "Discover.Response",
            "messageId": "c0555cc8-ad7a-4377-b310-9de9b9ab6282"
        }
    }
}

尽管如此，出于某些原因，Alexa回答说，它没有发现任何新设备。我可能弄错了，但我非常确定在我决定添加Alexa.EndpointHealth接口之前，它是可以工作的。

Answer 1

您的response对象在我看来是正确的，除了额外的"endpoint"字段。

"endpoint": {
            "endpointId": "INVALID",
            "scope": {
                "type": "BearerToken",
                "token": "INVALID"
            }
        }

在Alexa.Discovery文档中没有这样的字段。尝试删除它，看看它是否解决了问题。