How to specify integration response for AWS websocket ApiGateway route

Serverless Framework
1

I don’t see how (or if it is possible) to specify an integration response for an AWS websocket ApiGateway route. Am I missing something? In general I think specifying route characteristics needs more to it.

2

I am also looking for how to specify this. In the obsoleted serverless-websockets-plugin, it could be specified in this way,

  twoWayMessage:
handler: handler.twoWay
events:
  - websocket:
      routeKey: twoway
      # The property below will enable an integration response in the API Gateway.
      # See https://docs.aws.amazon.com/apigateway/latest/developerguide/apigateway-websocket-api-route-response.html
      routeResponseSelectionExpression: $default

But it can’t be done now with my current version (1.43.0)

I have tried this, in wild hopes it would work, but it didn’t.

  testWebsocket:
    handler: app/tests.handler
    events:
      - websocket:
          route: testWebsocket
          routeResponseSelectionExpression: $default
3

Found the issue on Github https://github.com/serverless/serverless/issues/6130

Looking forward to the enhancement!