Demonstrating same crash, except without subclass.

reel-nosubclass.rb

require 'rubygems'
require 'bundler/setup'
require 'reel'

puts "Starting test server //"

Reel::Server.supervise("0.0.0.0", 80) do |connection|
  while request = connection.request
    case request
    when Reel::Request
      puts "Client requested: #{request.method} #{request.url}"
      request.respond :ok, "Hello, world!"
    when Reel::WebSocket
      puts "Client made a WebSocket request to: #{request.url}"
      request << "Hello everyone out there in WebSocket land"
      request.close
      break
    end
  end
end

sleep