session keys for upstream connections should be two-sided

lib/floof.ex

@@ -55,9 +55,10 @@ defmodule Floof do
       if sesskey != nil do
         {:ok, encd} = :FloofProtocol.encode(:ProtoMessage, {:session, {:attach, sesskey}})
         :ok = :gen_tcp.send(socket, encd)
+        Floof.SessionManager.attach(sesskey, self())
       end
 
-      serve(socket, %{}, nil)
+      serve(socket, %{}, sesskey)
     after
       :ok = :gen_tcp.close(socket)
     end