Websocket Api not working with authorzer lamda

Question

I have been trying to fix this since days now but I've no clue what is happening

I have created a websocket api using cdk which works fine but when I add authorzer to connect route I get 500 error. The authorizer lambda completes execution normally but the connect route lambda is never invoked

import { WebSocketApi, WebSocketAuthorizer, WebSocketAuthorizerType, WebSocketStage } from '@aws-cdk/aws-apigatewayv2-alpha';
import { WebSocketLambdaAuthorizer } from '@aws-cdk/aws-apigatewayv2-authorizers-alpha';
import { WebSocketLambdaIntegration } from '@aws-cdk/aws-apigatewayv2-integrations-alpha';

`const authorizer = new WebSocketLambdaAuthorizer('blessed-messanger-authorizer', authorizerHandler
            , { identitySource: ['route.request.querystring.token'] }
        );`

`this.webSocketApi = new WebSocketApi(this, 'blessed-messenger-api', {
            apiName: 'blessed-messenger',
            connectRouteOptions: { integration: new WebSocketLambdaIntegration("ConnectIntegration", onConnectHandler), authorizer },
            defaultRouteOptions: { integration: new WebSocketLambdaIntegration("DefaultIntegration", onMessageHandler) },
            disconnectRouteOptions: { integration: new WebSocketLambdaIntegration("DisconnectIntegration", onDisconnectHandler) },
        });`

This is my authorzer function. I have tried everything that is commented out in if block

`exports.handler = async (event, context, callback) => {
  var queryStringParameters = event.queryStringParameters;
  var token = queryStringParameters.token;
  if(token === "some_user"){
    // return generateAllow("some_user", event.methodArn);
    // callback(null, generateAllow("some_user", event.methodArn);
    return { statusCode: 200, body: "OK" };
  }else{
    callback("Unauthorized");
  }
};`

I have read these questions as well but no luck
https://repost.aws/questions/QUfTsKsL47RYSz9z1OAZEYMA/websocket-authorizer-status-500

Please help

Accepted Answer

Have you taken a look at this document for an example - https://docs.aws.amazon.com/apigateway/latest/developerguide/apigateway-websocket-api-lambda-auth.html

Websocket Api not working with authorzer lamda

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