Use 10 TLS connection acceptors by default

Part of rabbitmq/rabbitmq-server#1729.

[#161136615]

Author: michaelklishin

Makefile

@@ -5,9 +5,9 @@ PROJECT_MOD = rabbit_ws_app
 define PROJECT_ENV
 [
 	    {tcp_config, []},
-	    {num_tcp_acceptors, 10},
 	    {ssl_config, []},
-	    {num_ssl_acceptors, 1},
+	    {num_tcp_acceptors, 10},
+	    {num_ssl_acceptors, 10},
 	    {cowboy_opts, []},
 	    {ws_frame, text},
 	    {use_http_auth, false}

src/rabbit_ws_listener.erl

@@ -73,7 +73,7 @@ init() ->
             TLSPort = proplists:get_value(port, TLSConf0),
             TLSConf = maybe_parse_ip(TLSConf0),
             NumSslAcceptors = case application:get_env(rabbitmq_web_stomp, num_ssl_acceptors) of
-                undefined     -> get_env(num_acceptors, 1);
+                undefined     -> get_env(num_acceptors, 10);
                 {ok, NumSsl}  -> NumSsl
             end,
              {ok, _} = ranch:start_listener(