require "webrick"

WEBrick::HTTPServlet::FileHandler.add_handler("rb", WEBrick::HTTPServlet::CGIHandler)

httpd = WEBrick::HTTPServer.new(
  :DocumentRoot => File::dirname('./'),
  :Port         => 9999,
  :Logger       => WEBrick::Log.new($stderr, WEBrick::Log::DEBUG),
  :DirectoryIndex => ['index.rb'],
  :DirectoryListEnable => false,
  :CGIPathEnv   => ENV["PATH"]   # PATH environment variable for CGI.
)

trap(:INT){ httpd.shutdown }
httpd.start