From ebea3cc3925d8589d50e13212319ab337cd3c1e9 Mon Sep 17 00:00:00 2001
From: terry-xiaoyu <506895667@qq.com>
Date: Thu, 10 Oct 2019 19:27:35 +0800
Subject: [PATCH] Defend the ssl upgrade failure

---
 src/emqx_connection.erl | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/emqx_connection.erl b/src/emqx_connection.erl
index e577fd2cc..186fbd2fe 100644
--- a/src/emqx_connection.erl
+++ b/src/emqx_connection.erl
@@ -150,7 +150,14 @@ call(CPid, Req) -> gen_statem:call(CPid, Req).
 %%--------------------------------------------------------------------
 
 init({Transport, RawSocket, Options}) ->
-    {ok, Socket} = Transport:wait(RawSocket),
+    case Transport:wait(RawSocket) of
+         {ok, Socket} ->
+             do_init(Transport, Socket, Options);
+         {error, Reason} ->
+             ?LOG(warning, "connection failed to establish: ~p", [Reason])
+    end.
+
+do_init(Transport, Socket, Options) ->
     {ok, Peername} = Transport:ensure_ok_or_exit(peername, [Socket]),
     {ok, Sockname} = Transport:ensure_ok_or_exit(sockname, [Socket]),
     Peercert = Transport:ensure_ok_or_exit(peercert, [Socket]),