Rescuing from Rack::Multipart::EmptyContentError

[muellerj]

Since Rack 3, sending a malformed request results in a Rack::Multipart::EmptyContentError being thrown. I found some discussion in a rack issue: rack/rack#2093.

Is there a way to rescue from this and throw a 4xx error code rather than have the error bubble up the stack and result in a 500 server side error? I could not find specifics in the error_handler plugin.

[jeremyevans]

With the error_handler plugin:

plugin :error_handler do |e|
  case e
  when Rack::Multipart::EmptyContentError
    response.status = 400
    "Invalid request body"
  else
    # whatever you want
  end
end

However, you may be better off using the invalid_request_body plugin: https://roda.jeremyevans.net/rdoc/classes/Roda/RodaPlugins/InvalidRequestBody.html

[muellerj]

As always, thank you very much for the prompt and excellent help! 😃