Error saying Error during WebSocket handshake Unexpected response code 400

Question

I'm unable to connect to ingress for web socket service. It throws the following error:

connecting to ingress for web socket service

Ingress YAML

kind: Ingress
apiVersion: extensions/v1beta1
metadata:
  name: websocket-producer-cdph
spec:
  rules:
    host: some.domain.com
      http:
        paths:
          path: "/"
          backend:
            serviceName: websocket-producer-cdph
            servicePort: 8183
status:
loadBalancer:
ingress:
{}

Service YAML

kind: Service
apiVersion: v1
metadata:
  name: websocket-producer-cdph
spec:
  ports:    
    name: ws
    protocol: TCP
    port: 8183
    targetPort: 8183
selector:
  app: websocket-producer-cdph
clusterIP: 10.100.254.99
type: ClusterIP
sessionAffinity: None
status:
loadBalancer:
{}

Answer 1

 you should use annotation with the name of websocket service. Don't forget to use quotes:

nginx.org/websocket-services: "service1[,service2,...]"