Call broadcast function from app configured module.

ui/lib/ui_web/channels/user_socket.ex

@@ -30,4 +30,9 @@ defmodule UiWeb.UserSocket do
   #
   # Returning `nil` makes this socket anonymous.
   def id(_socket), do: nil
+
+  def broadcast_progress(progress) do
+    IO.puts("in user socket!")
+    UiWeb.Endpoint.broadcast("morse:progress", "update", %{value: progress})
+  end
 end