websocket connection failed after establishing https in google ingress controller - nginx

Question

I have deployed an application in kubernetes which is served by Google Ingress Controller (Service as ELB). The application is working fine. But the moment I am applying https related configuration, the https is coming but websocket fails.
Below is the service file and configmap
for http:
kind: Service
apiVersion: v1
metadata:
name: ingress-nginx
namespace: ingress-nginx
labels:
app: ingress-nginx
annotations:
# Enable PROXY protocol
service.beta.kubernetes.io/aws-load-balancer-proxy-protocol: '*'
# Increase the ELB idle timeout to avoid issues with WebSockets or Server-Sent Events.
service.beta.kubernetes.io/aws-load-balancer-connection-idle-timeout: '3600'
spec:
type: LoadBalancer
selector:
app: ingress-nginx
ports:
- name: http
port: 80
targetPort: http
- name: https
port: 443
targetPort: https
---------------------------------------------------------------------------------------------------
kind: ConfigMap
apiVersion: v1
metadata:
name: nginx-configuration
namespace: ingress-nginx
labels:
app: ingress-nginx
data:
use-proxy-protocol: "true"
for https:
kind: Service
apiVersion: v1
metadata:
name: ingress-nginx
namespace: ingress-nginx
labels:
app: ingress-nginx
annotations:
service.beta.kubernetes.io/aws-load-balancer-ssl-cert: "arn:aws:acm:us-east-1:2xxxxxxxxxxxxxxxxxxx56:certificate/3fxxxxxxxxxxxxxxxxxxxxxxxxxx80"
service.beta.kubernetes.io/aws-load-balancer-backend-protocol: "http"
service.beta.kubernetes.io/aws-load-balancer-ssl-ports: "https"
# Increase the ELB idle timeout to avoid issues with WebSockets or Server-Sent Events.
service.beta.kubernetes.io/aws-load-balancer-connection-idle-timeout: '3600'
spec:
type: LoadBalancer
selector:
app: ingress-nginx
ports:
- name: http
port: 80
targetPort: http
- name: https
port: 443
targetPort: http
------------------------------------------------------------------------------------------
kind: ConfigMap
apiVersion: v1
metadata:
name: nginx-configuration
namespace: ingress-nginx
labels:
app: ingress-nginx
data:
use-proxy-protocol: "false"
Am I missing any annotations or data in configmap ? Pls help me out

Answer 1

I think the problem is the annotation:
service.beta.kubernetes.io/aws-load-balancer-backend-protocol: "http"
The backend-protocol in ELBs must be TCP for websocket connections.
Also, I see you're using Nginx Ingress Controller, maybe you want to set these variables in the config
proxy-read-timeout: "3600"
proxy-send-timeout: "3600"
To avoid connection closings.