Merge pull request #1479 from weisslj/fix-missing-ssl-close

Correct close semantics for active once connections. This was a timing dependent bug the resulted in the close message not always reaching the ssl user process.

OTP-14443

1 files changed, 11 insertions, 2 deletions

diff --git a/lib/ssl/src/tls_connection.erl b/lib/ssl/src/tls_connection.erl
index 96c3ab86e9..352874c77d 100644
--- a/lib/ssl/src/tls_connection.erl
+++ b/lib/ssl/src/tls_connection.erl
@@ -600,8 +600,12 @@ next_record(#state{protocol_buffers =
 next_record(#state{protocol_buffers = #protocol_buffers{tls_packets = [], tls_cipher_texts = []},
 		   socket = Socket,
 		   transport_cb = Transport} = State) ->
-    tls_socket:setopts(Transport, Socket, [{active,once}]),
-    {no_record, State};
+    case tls_socket:setopts(Transport, Socket, [{active,once}]) of
+	ok ->
+	    {no_record, State};
+	_ ->
+	    {socket_closed, State}
+    end;
 next_record(State) ->
     {no_record, State}.
 
@@ -626,10 +630,15 @@ passive_receive(State0 = #state{user_data_buffer = Buffer}, StateName) ->
 next_event(StateName, Record, State) ->
     next_event(StateName, Record, State, []).
 
+next_event(StateName, socket_closed, State, _) ->
+    ssl_connection:handle_normal_shutdown(?ALERT_REC(?FATAL, ?CLOSE_NOTIFY), StateName, State),
+    {stop, {shutdown, transport_closed}, State};
 next_event(connection = StateName, no_record, State0, Actions) ->
     case next_record_if_active(State0) of
 	{no_record, State} ->
 	    ssl_connection:hibernate_after(StateName, State, Actions);
+	{socket_closed, State} ->
+	    next_event(StateName, socket_closed, State, Actions);
 	{#ssl_tls{} = Record, State} ->
 	    {next_state, StateName, State, [{next_event, internal, {protocol_record, Record}} | Actions]};
 	{#alert{} = Alert, State} ->