Replies: 4 comments 4 replies
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hmmm some reverse proxy there too? not a bug in changedetection i think |
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Thank you for your answer. I checked again only with traefik and it creates the same error in the web console. It is possible, that it is an reverse proxy issue. |
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I'm seeing the same issue, using Traefik 3.4.4: 
services:
changedetection:
image: lscr.io/linuxserver/changedetection.io:latest
container_name: changedetection_webserver
hostname: changedetection
extends:
file: ../common-services.yml
service: baseapp_in_user_bridge
environment:
PUID: 500 # pedro
PGID: 101 # docker
BASE_URL: https://changedetection.example.tld
PLAYWRIGHT_DRIVER_URL: ws://browser-sockpuppet-chrome:3000
HIDE_REFERER: false
volumes:
- ../../config/changedetection:/config
- ../../data/changedetection:/datastore
ports:
- 5000:5000
networks:
- browser
- traefik_proxy
mem_limit: 256m
# Used for fetching pages via WebDriver+Chrome where you need Javascript support.
# If WEBDRIVER or PLAYWRIGHT are enabled, changedetection container depends on that
# and must wait before starting (substitute "browser-chrome" with "playwright-chrome" if last one is used)
depends_on:
browser-sockpuppet-chrome:
condition: service_started
restart: unless-stopped
labels:
traefik.enable: true
traefik.http.routers.changedetection.rule: Host(`changedetection.example.tld`)
traefik.http.routers.changedetection.priority: 99
traefik.http.routers.changedetection.entrypoints: websecure
traefik.http.routers.changedetection.tls: true
Traefik configuration: entryPoints:
web:
address: :80
http:
redirections:
entryPoint:
to: websecure
scheme: https
permanent: true
websecure:
address: :443
http2:
maxConcurrentStreams: 250
http3: {}
websecure-external:
address: :10443
http2:
maxConcurrentStreams: 50
http3: {}
websecure-no-mtls:
address: :10444
http2:
maxConcurrentStreams: 50
http3: {}Clearly something is wrong in the Traefik configuration, because the WebSockets work fine if I run changedetection on the host interface. |
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I have the impression that the problem is coming from some kind of validation (headers?) done by socket.io or changedetection, given the 400 status code when trying to upgrade the connection: |
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Just noticed this in https://flask-socketio.readthedocs.io/en/latest/deployment.html#cross-origin-controls:
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OK, fixed it by adding these labels to the configuration: - "traefik.http.middlewares.cd-headers.headers.customrequestheaders.X-Forwarded-Proto=https"
- "traefik.http.middlewares.cd-headers.headers.customrequestheaders.X-Forwarded-Host=changedetection.example.com"
- "traefik.http.routers.changedetection.middlewares=cd-headers" |
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It's because traefik is not configured correctly to proxy "websockets", websockets are NOT like normal HTTP. I dont know what the answer is sorry |
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As far as I know, Traefik transparently handles websockets: https://doc.traefik.io/traefik/user-guides/websocket/ |
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Describe the bug
After installation if I access the basic main page the following errors are shown in the web console.
Chromium
Firefox
Version
Exact version Version: v0.50.6
How did you install?
Docker Compose Stack
Authentik is here only a proxy, the error also occurs if I use it direct behind the Traefik reverse proxy.
To Reproduce
Change the authentik part in the stack with traefik or any other reverse proxy docker network. Or just delete the network part.
Desktop (please complete the following information):
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