Document SOCKETIO_CORS_ORIGINS

[bfritscher]

Please document that on self hosted docker behind a proxy setting SOCKETIO_CORS_ORIGINS is required or make it use BASE_URL?

[dgtlmoon]

Care to give any more information? version? platform? reverse proxy type?

[bfritscher]

Latest version.
I have a traefik in front of the docker. Lost some time finding out why I was getting socket.io connection errors until I looked at the source code:

changedetection.io/changedetectionio/realtime/socket_server.py

Line 260 in 17002b5

cors_origins = os.environ.get('SOCKETIO_CORS_ORIGINS', None)

services:
  changedetection:
    image: ghcr.io/dgtlmoon/changedetection.io:latest
    container_name: changedetection
    hostname: changedetection
    volumes:
      - changedetection-data:/datastore
    labels:
      - "traefik.enable=true"
      - "traefik.docker.network=web"
      - "traefik.http.services.changedetection-app.loadbalancer.server.port=5000"
      - "traefik.http.routers.changedetection-app.rule=Host(`cd.example.com`)"
      - "traefik.http.routers.changedetection-app.entrypoints=websecure"
      - "traefik.http.routers.changedetection-app.tls=true"
      - "traefik.http.routers.changedetection-app.tls.certresolver=provider"
    environment:
      - BASE_URL=https://cd.example.com
      - SOCKETIO_CORS_ORIGINS=https://cd.example.com

Thanks for this project!