I currently have an AKS cluster setup running a GraphQL server and normal nginx ingress. We're attempting to onboard GraphQL Subscriptions, which utilize Websockets. The URL that GraphQL uses for websockets is the same url that is used for GraphQL queries. We've tried adding proxy configuration to enable websocket ingress, but the connection is never established. Running the GraphQL server without Kubernetes is successful, so we think there is something kubernetes-specific going on here...has anyone had any success doing this? Relevant ingress config below

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: web-ingress
  namespace: web
  annotations:
    kubernetes.io/ingress.class: nginx
    certmanager.k8s.io/cluster-issuer: letsencrypt
    nginx.ingress.kubernetes.io/use-regex: "true"
    nginx.ingress.kubernetes.io/affinity: cookie
    nginx.ingress.kubernetes.io/proxy-send-timeout: "3600"
    nginx.ingress.kubernetes.io/proxy-read-timeout: "3600"
    nginx.ingress.kubernetes.io/proxy-connect-timeout: "30"
    nginx.ingress.kubernetes.io/configuration-snippet: |
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
spec:
  tls:
  - hosts:
    - my.host
    - my-api.host
    secretName: tls-secret
  rules:
  - host: my.host
    http:
      paths:
      - path: /graphql
        backend:
          serviceName: webapi
          servicePort: 80
      - path: /(.*)
        backend:
          serviceName: website
          servicePort: 80
  - host: my-api.host
    http:
      paths:
      - backend:
          serviceName: webapi
          servicePort: 80
        path: /(.*)