Merge branch 'legoscia/fix-ssl-example/PR-976/OTP-13363' into maint

* legoscia/fix-ssl-example/PR-976/OTP-13363:
  ssl: Modernize utility function
  Fix ssl example

2 files changed, 13 insertions, 17 deletions

diff --git a/lib/ssl/examples/src/client_server.erl b/lib/ssl/examples/src/client_server.erl
index 799027123f..019b5130d2 100644
--- a/lib/ssl/examples/src/client_server.erl
+++ b/lib/ssl/examples/src/client_server.erl
@@ -26,9 +26,7 @@
 
 start() ->
     %% Start ssl application
-    application:start(crypto),
-    application:start(public_key),
-    application:start(ssl),
+    {ok, StartedApps} = application:ensure_all_started(ssl),
 
     %% Let the current process be the server that listens and accepts
     %% Listen
@@ -52,7 +50,8 @@ start() ->
     ssl:close(ASock),
     io:fwrite("Listen: closing and terminating.~n"),
     ssl:close(LSock),
-    application:stop(ssl).
+
+    lists:foreach(fun application:stop/1, lists:reverse(StartedApps)).
 
 
 %% Client connect
diff --git a/lib/ssl/src/ssl.erl b/lib/ssl/src/ssl.erl
index 3afc3a5e87..780bef5877 100644
--- a/lib/ssl/src/ssl.erl
+++ b/lib/ssl/src/ssl.erl
@@ -60,22 +60,19 @@
 -spec start() -> ok  | {error, reason()}.
 -spec start(permanent | transient | temporary) -> ok | {error, reason()}.
 %%
-%% Description: Utility function that starts the ssl, 
-%% crypto and public_key applications. Default type
-%% is temporary. see application(3)
+%% Description: Utility function that starts the ssl and applications
+%% that it depends on.
+%% see application(3)
 %%--------------------------------------------------------------------
 start() ->
-    application:start(crypto),
-    application:start(asn1),
-    application:start(public_key),
-    application:start(ssl).
-
+    start(temporary).
 start(Type) ->
-    application:start(crypto, Type),
-    application:start(asn1),
-    application:start(public_key, Type),
-    application:start(ssl, Type).
-
+    case application:ensure_all_started(ssl, Type) of
+	{ok, _} ->
+	    ok;
+	Other ->
+	    Other
+    end.
 %%--------------------------------------------------------------------
 -spec stop() -> ok.
 %%