Websocket authorzation handler - return something that isn't `500`?

Comienza con la configuración de WebSocket de $connect y los valores de retorno de authHandler, y compáralos después con el contrato del authorizer de API Gateway y la respuesta 500 observada. Se considera terminado cuando estén establecidos el estado de error admitido y el tipo de handler de TypeScript para este ejemplo, junto con una comprobación reproducible para solicitudes que no incluyen el secret.

Question / help needed

I'm trying to get authorization working before connecting to websockets, which works, but I'm struggling to return an error message that isn't 500.

I've managed to make an auth handler, like so:

    connectHandler: {
      handler: 'handler.connectHandler',
      events: [
        {
          "websocket": {
            route: "$connect",
            authorizer: {
              name: "authHandler",
              identitySource: [
                // No identity source, leave it up to the handler
              ],
            },
          },
        },
      ],
      environment: {
        // ..
      },
    },

Any my authHandler:

export const authHandler = async (event, _context) => {
  console.log('🔑 Auth request received', event.requestContext)

  const token = event.headers.Authorization ?? event.queryStringParameters.Authorization;
  console.log('Token:', token)

  if (token !== 'secret') {
    return {
      statusCode: 401,
    }
  }

  return {
    "principalId": "user",
    "policyDocument": {
      "Version": "2012-10-17",
      "Statement": [
        {
          "Action": "execute-api:Invoke",
          "Effect": "Allow",
          "Resource": event.methodArn
        }
      ]
    }
  };
}

Questions:

• what should I return in case of an error? Any request to my websocket-server that doesn't have the secret header/querystring returns 500 right now, and I'd prefer it to return a 4xx status code.

• what is the correct type for the authorization handler? I'm using APIGatewayProxyHandler on the other fn handlers which gives me nice inline errors.

  How my other handlers look like, which gives me pleasant TypeScript-errors when I do something wrong

  ```ts

  export const connectHandler: APIGatewayProxyHandler = async (event, _context) => {
  const connectionId = event.requestContext.connectionId!

  console.log('➕ Adding connection ', connectionId)

  await client.query('INSERT INTO "public"."Connection"("id") VALUES($1) RETURNING *', [connectionId])
  return {
  statusCode: 200,
  body: '',
  };
  }

  </details>