Logging ActionDispatch::HostAuthorization 503 responses

Previous Topic Next Topic
classic Classic list List threaded Threaded
1 message Options
Reply | Threaded
Open this post in threaded view

Logging ActionDispatch::HostAuthorization 503 responses

Vincent Rolea
When testing webhooks integration using ngrok on a new Rails 6 app, I couldn't figure out why 403 response were returned in ngrok, and nothing was logged in the server logs.
I ended up learning about the new HostAuthorization middleware included in Rails 6 and the need for specifying hosts in the app config when different from localhost.

In some cases where you don't have access to html/text response from the server, like the one I experienced, I think it would be good to log it using the Rails.logger. HostAuthorization calls a default response app when host is not whitelisted, logging could happen there:

request = Request.new(env)

format = request.xhr? ? "text/plain" : "text/html"
template = DebugView.new(host: request.host)
body = template.render(template: "rescues/blocked_host", layout: "rescues/layout")
# Logging details about the reason of the 403
Rails.logger.error("Host host.com not included in host lists. Please add it to your config")

[403, {
"Content-Type" => "#{format}; charset=#{Response.default_charset}",
"Content-Length" => body.bytesize.to_s,
}, [body]]

Interested in feedback from the community!

You received this message because you are subscribed to the Google Groups "Ruby on Rails: Core" group.
To unsubscribe from this group and stop receiving emails from it, send an email to [hidden email].
To view this discussion on the web visit https://groups.google.com/d/msgid/rubyonrails-core/f2075b94-482d-4f65-99cb-47a062933d19%40googlegroups.com.