failed: Connection closed before receiving a handshake response - nginx

Question

Thats a very weird error, because i have tried configuring it multiple times, and still cant get my websocket work properly. And i dont think that problem is in clientside.
So I have 2 guesses:
I might improperly configured nginx.conf file
i have improperly configured something what is related with docker. for example entrypoint.sh
So far i have tried editing both files, and also tried different variations of configuring routs. I also think that it can be some dumb mistake, but i have spent a long time on this, so i really appreciate any help or advide
here is asgi.py:
import os
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'config.settings')
from django.core.asgi import get_asgi_application
from channels.routing import ProtocolTypeRouter, URLRouter
from service import routing
from channels.auth import AuthMiddlewareStack
from django.core.asgi import get_asgi_application
application_asgi = ProtocolTypeRouter({
'http': get_asgi_application(),
'websocket':AuthMiddlewareStack(
URLRouter(
routing.websocket_urlpatterns
)
),
})
application = get_asgi_application()
routing.py:
from django.urls import re_path, path
from .consumers import EventConsumer
websocket_urlpatterns = [
path('^api/wsEvents/', EventConsumer.as_asgi())
]
my nginx.conf:
daemon off;
upstream django {
server django_gunicorn:8000;
}
upstream websocket {
server django_asgi:8080;
}
map $http_upgrade $connection_upgrade {
default upgrade;
'' close;
}
http {
listen 8000;
location / {
proxy_pass http://localhost:8000;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";
}
location /static/ {
autoindex on;
alias ./backend/service/static:/backend/static; #and here also was just /static?
}
location /api/wsEvents/ {
proxy_pass http://localhost:8000;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection $connection_upgrade;
proxy_redirect off;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Host $server_name;
}
}
docker-compose:
services:
django_asgi:
build:
context: .
command: daphne config.asgi:application --port 8080 --bind 0.0.0.0
volumes:
- .:/app/backend
environment:
- .env
links:
- db
- redis
depends_on:
- db
- redis
redis:
restart: always
image: redis
ports:
- 6379:6379
volumes:
- redisdata:/data
django_gunicorn:
volumes:
- static:/app/static ## here was just /static/ | also in default.conf same
env_file:
- .env
build:
context: .
ports:
- 8000:8000
links:
- redis
nginx:
build: ./nginx
volumes:
- static:/app/static/ # here was just static:/static/
depends_on:
- django_gunicorn
- django_asgi
ports:
- "80:80"
Any advice or help is appreciated