WebSocket connection getting rejected in production when using docker container - django

Question

My WebSocket connection getting rejected from the Django Channels server deployed in AWS EC2. I am using Docker for server side which contains PostgreSQL and Redis also
WebSocket HANDSHAKING /ws/notifications/
WebSocket REJECT /ws/notifications/
WebSocket DISCONNECT /ws/notifications/
front-end is built using React Js is deployed in netlify.
server side is secured using cer-bot.
my nginx configuration files looks like this
map $http_upgrade $connection_upgrade {
default upgrade;
'' close;
}
server {
server_name IP_address example.com ;
location = /favicon.ico { access_log off; log_not_found off; }
location /staticfiles/ {
root /home/ubuntu/social-network-django-server;
}
location / {
proxy_pass http://127.0.0.1:8000;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection $connection_upgrade;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}
listen 443 ssl; # managed by Certbot
ssl_certificate /etc/letsencrypt/live/_____; # managed by Certbot
ssl_certificate_key /etc/letsencrypt/live/____; # managed by Certbot
include /etc/letsencrypt/options-ssl-nginx.conf; # managed by Certbot
ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem; # managed by Certbot
}
server {
if ($host = example.com) {
return 301 https://$host$request_uri;
} # managed by Certbot
listen 80;
server_name IP_address example.com ;
return 404; # managed by Certbot
}
everything other than the websocket connection is working fine without any issues. I have no idea what is happening here. I am using d]Django channels first time,
I am using wss:// instead of ws://
my error in the browser looks like this
WebSocket connection to 'wss://_____________________' failed:
if any one have any idea what is happening please share!
my github repo links server client
my Dockerfile looks like this
FROM python:3.11.1
RUN apt-get update \
&& apt-get install -y --no-install-recommends \
postgresql-client \
&& rm -rf /var/lib/apt/lists/*
WORKDIR /usr/src/app
COPY requirements.txt ./
RUN pip install -r requirements.txt
COPY . .
EXPOSE 8000
CMD ["python", "manage.py", "runserver", "0.0.0.0:8000"]
my docker-compose.yaml looks like this
version: '3'
services:
db:
image: postgres
environment:
- POSTGRES_USER=postgres
- POSTGRES_PASSWORD=2221
- POSTGRES_DB=social-network
volumes:
- db-data:/var/lib/postgresql/data/
ports:
- "5432"
web:
build: .
command: python manage.py runserver 0.0.0.0:8000
volumes:
- .:/code
ports:
- "8000:8000"
depends_on:
- db
environment:
- DATABASE_URL=postgres://postgres:2221#db:5432/social-network
- REDIS_URL=redis://redis:6379/0
redis:
image: redis
ports:
- "6379"
volumes:
db-data:
I think this is maybe related to redis, can someone explain what is this error is all about, I am new to Redis and first time I'm using it
my websocket connection is rejected by server in the production environment.
most of the time it is getting rejected, but one time I got the error like this
future: <Task finished name='Task-2137' coro=<Connection.disconnect() done, defined at /usr/local/lib/python3.11/site-packages/redis/asyncio/connection.py:720> exception=RuntimeError('Event loop is closed')>
Traceback (most recent call last):
File "/usr/local/lib/python3.11/site-packages/redis/asyncio/connection.py", line 729, in disconnect
self._writer.close() # type: ignore[union-attr]
^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.11/asyncio/streams.py", line 344, in close
return self._transport.close()
^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.11/asyncio/selector_events.py", line 839, in close
self._loop.call_soon(self._call_connection_lost, None)
File "/usr/local/lib/python3.11/asyncio/base_events.py", line 761, in call_soon
self._check_closed()
File "/usr/local/lib/python3.11/asyncio/base_events.py", line 519, in _check_closed
raise RuntimeError('Event loop is closed')