Socket with SignalR and kubernetes

I encountered a problem when deploying a socket application using signalr. I connect with the longpolling method and it still works, but the websocket gives an error: Error: Failed to start the transport 'WebSockets': Error: WebSocket failed to connect. The connection could not be found on the server, either the endpoint may not be a SignalR endpoint, the connection ID is not present on the server, or there is a proxy blocking WebSockets. If you have multiple servers check that sticky sessions are enabled.

I think my ingress configuration has problem, but I still don't find it. Hope anyone can help me.
this's my ingress:

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: socket-service-ingress
  namespace: dev
  annotations:
    nginx.ingress.kubernetes.io/proxy-http-version: "1.1"
    nginx.ingress.kubernetes.io/configuration-snippet: |
      proxy_set_header Upgrade $http_upgrade;
      proxy_set_header Connection "Upgrade";
    nginx.ingress.kubernetes.io/proxy-read-timeout: "3600"
    nginx.ingress.kubernetes.io/proxy-send-timeout: "3600"
    nginx.ingress.kubernetes.io/affinity: cookie
    nginx.ingress.kubernetes.io/session-cookie-name: SIGNALR-AFFINITY
    nginx.ingress.kubernetes.io/session-cookie-hash: sha1
spec:
  rules:
    - host: example.com
      http:
        paths:
          - path: /socket-service/mainHub
            pathType: Prefix
            backend:
              service:
                name: socket-service
                port:
                  number: 80