From 473e600b531cd90978dbc9f2019988d08663f37b Mon Sep 17 00:00:00 2001
From: JianBo He <heeejianbo@163.com>
Date: Fri, 13 Aug 2021 16:41:16 +0800
Subject: [PATCH] fix(exproto): fix badarg is_process_alive/1

---
 apps/emqx_exproto/src/emqx_exproto_gsvr.erl | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/apps/emqx_exproto/src/emqx_exproto_gsvr.erl b/apps/emqx_exproto/src/emqx_exproto_gsvr.erl
index a4ad5b2e4..bc4abfc4d 100644
--- a/apps/emqx_exproto/src/emqx_exproto_gsvr.erl
+++ b/apps/emqx_exproto/src/emqx_exproto_gsvr.erl
@@ -123,12 +123,14 @@ call(ConnStr, Req) ->
             {error, ?RESP_PARAMS_TYPE_ERROR,
                     <<"The conn type error">>};
         Pid when is_pid(Pid) ->
-            case erlang:is_process_alive(Pid) of
-                true ->
-                    emqx_exproto_conn:call(Pid, Req);
-                false ->
+            case catch emqx_exproto_conn:call(Pid, Req) of
+                {'EXIT',{noproc, _}} ->
                     {error, ?RESP_CONN_PROCESS_NOT_ALIVE,
-                            <<"Connection process is not alive">>}
+                            <<"Connection process is not alive">>};
+                {'EXIT',{timeout, _}} ->
+                    {error, ?RESP_UNKNOWN, <<"Connection is not answered">>};
+                Result ->
+                    Result
             end
     end.