Call broadcast function from app configured module.

ui/lib/ui/application.ex

@@ -9,8 +9,7 @@ defmodule Ui.Application do
     # List all child processes to be supervised
     children = [
       # Start the endpoint when the application starts
-      UiWeb.Endpoint,
-      Ui.SocketAPI
+      UiWeb.Endpoint
       # Starts a worker by calling: Ui.Worker.start_link(arg)
       # {Ui.Worker, arg},
     ]

ui/lib/ui/socket_api.ex

@@ -1,18 +0,0 @@
-defmodule Ui.SocketAPI do
-  use GenServer
-
-  def start_link(_) do
-    GenServer.start_link(__MODULE__, nil, name: __MODULE__)
-  end
-
-  @impl true
-  def init(state) do
-    {:ok, state}
-  end
-
-  @impl true
-  def handle_cast({:broadcast_progress, progress}, state) do
-    UiWeb.Endpoint.broadcast("morse:progress", "update", %{value: progress})
-    {:noreply, state}
-  end
-end

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

ui/lib/ui_web/endpoint.ex

@@ -17,6 +17,7 @@ defmodule UiWeb.Endpoint do
 
   # Code reloading can be explicitly enabled under the
   # :code_reloader configuration of your endpoint.
+  IO.inspect code_reloading?
   if code_reloading? do
     socket "/phoenix/live_reload/socket", Phoenix.LiveReloader.Socket
     plug Phoenix.LiveReloader