Failed to connect using Docker about magiconion HOT 5 CLOSED

This is a bit out of scope for MagicOnion itself, but port 5000 is the default development port. Very likely this container is listening on port 80. Two options:

• Redirect port 5000 to 80 in your compose file (- 5000:80 instead of - 5000:5000)
• Add this line to your Dockerfile: ENV ASPNETCORE_URLS=http://+:5000/

from magiconion.

This is a bit out of scope for MagicOnion itself, but port 5000 is the default development port. Very likely this container is listening on port 80. Two options:

• Redirect port 5000 to 80 in your compose file (- 5000:80 instead of - 5000:5000)
• Add this line to your Dockerfile: ENV ASPNETCORE_URLS=http://+:5000/

No difference. I'm fairly certain that the server is listening on port 5000 beacuse of the container logs and that fact that I'm able to connect on port 5000 outside of docker.

Container logs:

info: Microsoft.Hosting.Lifetime[14]
      Now listening on: http://localhost:5000
info: Microsoft.Hosting.Lifetime[0]
      Application started. Press Ctrl+C to shut down.
info: Microsoft.Hosting.Lifetime[0]
      Hosting environment: Production
info: Microsoft.Hosting.Lifetime[0]
      Content root path: /app

from magiconion.

Oh huh! I've definitely used ports inside Intel containers on macOS Apple Silicon machines (not with MagicOnion in particular, but I very much doubt that matters).

Maybe something else is already listening on port 5000 at the OS level? I don't think the stuff inside the container will know. You could also try explicitly using 127.0.0.1 instead of localhost, and binding to it in the docker compose definition with: - 127.0.0.1:5000:5000

(And connect to 127.0.0.1 instead of localhost resolution)

from magiconion.

Issue resolved. The fix was to have the server listen on 0.0.0.0 instead of localhost.

from magiconion.

Ah, right! I vaguely remember there being some weirdness around localhost and Docker (the container's "localhost" isn't the same as the host's "localhost" or something along those lines).

from magiconion.