Prepare to join servers

lib/birdy_chat_web/channels/server_channel.ex

@@ -24,6 +24,13 @@ defmodule BirdyChatWeb.ServerChannel do
     end
   end
 
+  # This is how we send messages
+  def broadcast!(peer, message) do
+    channel = "server:#{peer}"
+    encoded_message = :erlang.term_to_binary(message)
+    BirdyChatWeb.Endpoint.broadcast!(channel, "new_message", {:binary, encoded_message})
+  end
+
   # Simple token-based authentication. Servers should use the same Phoenix secret key so they will
   # have the basis for generating tokens.
   defp authorised?(%{"token" => token}, server_id) do