Hello,
i want to set up SignalR websocket behind Traefik.
Everything is running in docker containers.
Can somebody point me in the right direction, or to a working example?
I tried everything what i could find on the internet.
The best i can get is a Bad Gateway 502 response.
Share your Traefik static and dynamic config, and docker-compose.yml if used.
For code use 3 backticks in front and after, or select it and press the </> button.
Check simple Traefik example.
thank you for message.
here is my configuration.
i also have apache2 container running, maybe that causes some problems?
traefik docker-compose.yml
services:
traefik:
image: traefik:2.10.4
container_name: traefik
restart: always
labels:
- "traefik.http.routers.traefik.rule=Host(`twitchswitch.de`)"
# - "traefik.http.routers.traefik.middlewares=websocket-headers"
# - "traefik.http.middlewares.websocket-headers.headers.customRequestHeaders.X-Forwarded-Proto=https"
# - "traefik.http.middlewares.websocket-headers.headers.customRequestHeaders.Connection=keep-alive, Upgrade"
# - "traefik.http.middlewares.websocket-headers.headers.customRequestHeaders.Upgrade=websocket"
ports:
- "80:80"
- "443:443"
- "8080:8080"
- "6000:6000"
volumes:
- /var/run/docker.sock:/var/run/docker.sock:ro
- ./letsencrypt:/letsencrypt
- ./config/traefik.yml:/traefik.yml
networks:
- web
networks:
web:
name: traefik_web
config traefik.yml
log:
level: DEBUG
global:
checkNewVersion: true
sendAnonymousUsage: true
api:
dashboard: true
insecure: true
entryPoints:
web:
address: ":80"
http:
redirections:
entryPoint:
to: websecure
scheme: https
websecure:
address: ":443"
http:
tls:
certResolver: staging
# websocket:
# address: ":6000"
tls:
certificates:
- certFile: /etc/letsencrypt/live/twitchswitch.de/fullchain.pem
keyFile: /etc/letsencrypt/live/twitchswitch.de/privkey.pem
certificatesResolvers:
staging:
acme:
email: mymail@hotmail.com
storage: /letsencrypt/acme.json
caServer: "https://acme-staging-v02.api.letsencrypt.org/directory"
httpChallenge:
entrypoint: web
production:
acme:
email: mymail@hotmail.com
storage: /letsencrypt/acme.json
caServer: "https://acme-v02.api.letsencrypt.org/directory"
httpChallenge:
entryPoint: web
providers:
docker:
exposedByDefault: false
network: traefik_web
signalr docker-dompose.yml
services:
singlarwebsocket:
image: discostoff/singlarwebsocket:latest
container_name: singlarwebsocket
labels:
- "log.level=debug"
- "traefik.enable=true"
- "traefik.http.routers.singlarwebsocket.rule=Host(`twitchswitch.de`) && PathPrefix (`/ws/communityhub`) || Host(`twitchswitch.de`) && PathPrefix (`/ws`)"
- "traefik.http.routers.singlarwebsocket.middlewares=websocket-headers"
- "traefik.http.routers.singlarwebsocket.entrypoints=websecure"
- "traefik.http.services.singlarwebsocket.loadbalancer.sticky=true"
- "traefik.http.services.singlarwebsocket.loadbalancer.server.url=http://localhost:6000"
- "traefik.http.services.singlarwebsocket.loadbalancer.server.port=6000"
- "traefik.http.middlewares.websocket-headers.headers.customRequestHeaders.X-Forwarded-Proto=https"
# - "traefik.http.middlewares.websocket-headers.headers.customRequestHeaders.Connection=keep-alive, Upgrade"
# - "traefik.http.middlewares.websocket-headers.headers.customRequestHeaders.Upgrade=websocket"
networks:
- traefik_web
networks:
traefik_web:
external: true
Dockerfile
FROM mcr.microsoft.com/dotnet/aspnet:7.0 AS base
WORKDIR /app
EXPOSE 80
EXPOSE 443
EXPOSE 6000
EXPOSE 6001
FROM mcr.microsoft.com/dotnet/sdk:7.0 as build
WORKDIR /src
COPY ["SinglarWebsocket/SinglarWebsocket.csproj", "SinglarWebsocket/"]
RUN dotnet restore "SinglarWebsocket/SinglarWebsocket.csproj"
WORKDIR "/src/SinglarWebsocket"
COPY . .
RUN dotnet build "SinglarWebsocket/SinglarWebsocket.csproj" -c Release -o /app/build
FROM build as publish
RUN dotnet publish "SinglarWebsocket/SinglarWebsocket.csproj" -c Release -o /app/publish
FROM base as final
WORKDIR /app
COPY --from=publish /app/publish .
ENTRYPOINT ["dotnet", "SinglarWebsocket.dll"]
Asp.net 7.0 app
using SinglarWebsocket;
var builder = WebApplication.CreateBuilder(args);
builder.Services.AddControllers();
builder.Services.AddSignalR();
var app = builder.Build();
app.UseHttpsRedirection();
app.UseAuthorization();
app.MapControllers();
app.MapHub<FriendshipHub>("ws/communityhub");
app.Run();
loadbalancer.servers.url is not available on Docker provider with labels, you would need to use a dynamic config file and load via providers.file.
Also there is a spelling mistake in the line. Did you check the Traefik logs or Traefik dashboard, if the service is recognized despite the config error?
okay, i basically show you everything i tried. I still dont understand what i really need. From what i can hear. ppl say, you dont have to change much in the configuration.
I checked everything what i can. Traefik dashboard, the logs, but i get not much information from the logs. Only Bad Gateway 502.
When i remove
- "traefik.http.services.singlarwebsocket.loadbalancer.server.port= 6000"
- "traefik.http.middlewares.websocket-headers.headers.customRequestHeaders.X-Forwarded-Proto=https"
I get 404 not found.
Do you think the url is important?
For sure remove this line:
For sure keep this line, so Traefik knows which port to use.
Check your Traefik log for error and check Traefik dashboard.
Your Dockerfile exposes 4 ports, I don't know if it works when just making one available.
I get this error once when i restart the app and send the handshake with postman.
this is the url iam using in postman
wss://twitchswitch.de/ws/communityhub
[+] Running 1/1
✔ Container singlarwebsocket Removed 0.3s
[+] Running 1/1
✔ Container singlarwebsocket Started 0.6s
singlarwebsocket | info: Microsoft.Hosting.Lifetime[14]
singlarwebsocket | Now listening on: http://[::]:80
singlarwebsocket | info: Microsoft.Hosting.Lifetime[0]
singlarwebsocket | Application started. Press Ctrl+C to shut down.
singlarwebsocket | info: Microsoft.Hosting.Lifetime[0]
singlarwebsocket | Hosting environment: Production
singlarwebsocket | info: Microsoft.Hosting.Lifetime[0]
singlarwebsocket | Content root path: /app
singlarwebsocket | warn: Microsoft.AspNetCore.HttpsPolicy.HttpsRedirectionMiddleware[3]
singlarwebsocket | Failed to determine the https port for redirect.