I am developing my very first smarthome device - a doorbell. Please forgive me if my question may be naive.
Despite of all my attempts I am not able to send a “doorbell pressed event” to the Alexa event gateway and I am looking for help to understand what I am doing wrong or missing.
My Alexa Smarthome skill is active and linked to a Lambda function running in AWS; account linking using LWA is working fine and I can see my test doorbell device enabled in the Alexa app on my iphone.
When I enable my skill, Access.Grant is processed by the lambda function and returns this:
2020-10-21T23:34:30.071Z ee0e8aa8-8e1b-402b-9fae-f930dab7649e INFO Accept.Grant{
"directive": {
"header": {
"namespace": "Alexa.Authorization",
"name": "AcceptGrant",
"messageId": "5ebe87fa-3681-4796-9348-c954ea175314",
"payloadVersion": "3"
},
"payload": {
"grant": {
"type": "OAuth2.AuthorizationCode",
"code": "RHynKUouKZlEALFMidMJ"
},
"grantee": {
"type": "BearerToken",
"token": "Atza|IwEBIHHE5Xn9jfp5qPWlhBmLoqi24d09zPpnYglpwql2WyrGENgbg4dLU_4KtDnV6OoJLDo2CSTPHdlgyydKFeRgFatkGS_LsUJd_cIZKg1H7SWPnTIYSVOxzH1x_tb1Bi0vyxCmKD9tl_4sUwYRofR-1F6tjY_oCz5Q8apxUFiWR4FpnXo-IwHg5vLNoxj5_syej0Pyc8ra7mvIjXpjM4IlAE_F3LWlfui4fDJ1qEyFcVbFEqx6iI_nKGKfXw8GCcRbNi8USlN-skF8kvJUL1TIC3giyvuBSIXtMRA_8o-dSHC2SzJ0fHyPMDJerF6IKAZRxzb-h9UCRpTFaCzpK-l7_zuYJ2aDovoFl1_TxO-N0ZAdPmdPpoPf_h_dfH7cTdR23asmVXe5ubhfRxKjcfwL1Nnv"
}
}
}
}
I then try and POST a request to the event gateway to trigger the doorbell interaction using this command:
curl -i -XPOST --header 'Content-Type: application/json' --header 'Authorization: Bearer Atza|IwEBI...h2w' -d '@doorbell.json' https://api.eu.amazonalexa.com/v3/events
where the doorbell.json file is the following:
{
"context": {},
"event": {
"header": {
"messageId": "18b8e434-1872-445e-af1f-132deb4bb668",
"namespace": "Alexa.DoorbellEventSource",
"name": "DoorbellPress",
"payloadVersion": "3"
},
"endpoint": {
"scope": {
"type": "BearerToken",
"token": "Atza|IwEBI...h2w"
},
"endpointId": "belltest_id"
},
"payload": {
"cause": {
"type": "PHYSICAL_INTERACTION"
},
"timestamp": "2018-10-18T11:44:18.485Z"
}
}
}
(the token has been shortened…)
… and I get the following response:
HTTP/2 401
content-type: application/json;charset=UTF-8
server: Server
date: Thu, 22 Oct 2020 22:26:41 GMT
x-amz-rid: 6CGECD650T7K9GQY2D62
access-control-allow-headers: authorization,x-amz-access-token
access-control-allow-origin: *
status: 401
x-amzn-requestid: 2a1dca7a-d290-4024-8392-f38ad620ed6c
vary: Content-Type,Accept-Encoding,X-Amzn-CDN-Cache,X-Amzn-AX-Treatment,User-Agent
x-cache: Error from cloudfront
via: 1.1 dd6d273a0e8062d5909bfd6bf570f52b.cloudfront.net (CloudFront)
x-amz-cf-pop: MXP64-C1
x-amz-cf-id: Wtp34f6kfMcBW8qyudh1kIf9IBNkwGUgov5ZH4d2eazMZfOiphjpeA==
{
"header": {
"namespace": "System",
"name": "Exception",
"messageId": "bd0c65f6-0873-4120-8ca3-1fe1bfd9a873"
},
"payload": {
"code": "INVALID_ACCESS_TOKEN_EXCEPTION",
"description": "Access token is not valid."
}
}
I tried to disable and re-enable my skill and get a new access.grant and token, but the result is just always the same.
Can anybody help me find what I am doing wrong?
Thanks a lot!
