class PhusionPassenger::RequestHandler

def create_unix_socket_on_filesystem(options)
  if defined?(NativeSupport)
    unix_path_max = NativeSupport::UNIX_PATH_MAX
  else
    unix_path_max = options.fetch('UNIX_PATH_MAX', 100).to_i
  end
  if options['socket_dir']
    socket_dir = options['socket_dir']
    socket_prefix = "ruby"
  else
    socket_dir = Dir.tmpdir
    socket_prefix = "PsgRubyApp"
  end
  retry_at_most(128, Errno::EADDRINUSE) do
    socket_address = "#{socket_dir}/#{socket_prefix}.#{generate_random_id(:base64)}"
    socket_address = socket_address.slice(0, unix_path_max - 10)
    socket = UNIXServer.new(socket_address)
    socket.listen(BACKLOG_SIZE)
    socket.binmode
    socket.sync = true
    socket.close_on_exec!
    File.chmod(0600, socket_address)
    ["unix:#{socket_address}", socket]
  end
end