ssl: Add check when to toggle internal active N

Missing check of size of user_data_buffer made internal socket
behave as an active socket instead of active N.
Also correct indentation.

1 files changed, 9 insertions, 7 deletions

diff --git a/lib/ssl/src/tls_connection.erl b/lib/ssl/src/tls_connection.erl
index 114710a92e..15e3f30651 100644
--- a/lib/ssl/src/tls_connection.erl
+++ b/lib/ssl/src/tls_connection.erl
@@ -152,19 +152,21 @@ next_record(#state{protocol_buffers =
                    connection_states = ConnectionStates,
                    ssl_options = #ssl_options{padding_check = Check}} = State) ->
     next_record(State, CipherTexts, ConnectionStates, Check);
-next_record(#state{protocol_buffers = #protocol_buffers{tls_cipher_texts = []},
-                   protocol_specific = #{active_n_toggle := true, active_n := N} = ProtocolSpec,
+next_record(#state{user_data_buffer = {_,0,_},
+                   protocol_buffers = #protocol_buffers{tls_cipher_texts = []},
+                   protocol_specific = #{active_n_toggle := true, 
+                                         active_n := N} = ProtocolSpec,
                    static_env = #static_env{socket = Socket,
                                             close_tag = CloseTag,
                                             transport_cb = Transport}  
-                  } = State) ->
+                  } = State)  ->
     case tls_socket:setopts(Transport, Socket, [{active, N}]) of
  	ok ->
-             {no_record, State#state{protocol_specific = ProtocolSpec#{active_n_toggle => false}}}; 
+            {no_record, State#state{protocol_specific = ProtocolSpec#{active_n_toggle => false}}}; 
  	_ ->
-             self() ! {CloseTag, Socket},
-             {no_record, State}
-     end;
+            self() ! {CloseTag, Socket},
+            {no_record, State}
+    end;
 next_record(State) ->
     {no_record, State}.