Websocket API using AWS uncallable

I am creating a demo websocket API using AWS API Gateway onConnect and onDisconnect, I have attached Lambda functions

with code like

const AWS = require('aws-sdk');  const ddb = new AWS.DynamoDB.DocumentClient();    function addConnectionId(connectionId) {      return ddb.delete({          TableName: 'Chat',          Key: {              connectionid : connectionId,            },        }).promise();}      exports.handler = (event) => {      console.log("Connection broken");      const connectionId = event.requestContext.connectionId;      addConnectionId(connectionId).then(() => {          return {              statusCode: 200,               body:JSON.stringify({ msg: 'connected'})          }        });}  

but when i call it from wscat I get 502

D:>wscat -c wss://r6e1pcpjib.execute-api.ap-south-1.amazonaws.com/development  error: Unexpected server response: 502  

#aws #webSocket #find-a-specialist

I tried below article but didn't find the desired output

AWS API Gateway error response generates 502 "Bad Gateway"

https://stackoverflow.com/questions/66978652/websocket-api-using-aws-uncallable April 07, 2021 at 10:06AM