Skip to content

Latest commit

 

History

History

WebSocket - API Gateway

Folders and files

NameName
Last commit message
Last commit date

parent directory

..
lambda
lambda
 
 
README.md
README.md
 
 

README.md

🔙Back to Home

In this section, we create a WebSocket server using API Gateway's endpoint and lambda as backend to create a persistent medium of low-latency communication between the Alexa skill lambda and GCS

  • Create a new lambda function with Node.js 16.x, paste this in index.js of new lambda

  • Create a new DynamoDB table SOME_TABLE for storing connection ids of active clients connected to WebSocket

  • Add TABLE: SOME_TABLE to environment variables of lambda function

  • Create a new WebSocket API in AWS API Gateway, configure it according to below images

👇Images
  • Set route selection expression to $request.body.action $connect $disconnect broadcast echo default

  • After creating and deploying WebSocket API, navigate to Stages and select a stage, copy the WebSocket URL

  • Paste the url as ENDPOINT variable in index.js of WebSocket Lambda, paste it in main.py of GCS and also in wsSend function of Alexa's Lambda

  • Deploy the lambda function

Known issues

None