       nil ->
         Pixie.Backend.queue_for client_id, messages
       pid ->
+        GenServer.cast pid, :ping
         Pixie.Transport.enqueue pid, messages
     end
     :ok

  """
  def ping client_id do
    GenServer.cast via(client_id), :ping
  end

  @doc """

  use GenServer
  require Logger

  defstruct id: nil, transport_name: nil, metadata: nil
  alias __MODULE__

  def start_link id do
