BUG/MINOR: Lua: The socket may be destroyed when we try to access.

When we try to access to other proxy context, we must check
its existence because haproxy can kill it between the creation
and the usage.

This patch should be backported in 1.6 and 1.7

diff --git a/src/hlua.c b/src/hlua.c
index 24e04f2..4299487 100644 (file)
--- a/src/hlua.c
+++ b/src/hlua.c
@@ -2205,6 +2205,11 @@ __LJMP static int hlua_socket_connect(struct lua_State *L)
 
        /* Get args. */
        socket  = MAY_LJMP(hlua_checksocket(L, 1));
+
+       /* The socket may be destroy. */
+       if (!socket->s)
+               return 0;
+
        ip      = MAY_LJMP(luaL_checkstring(L, 2));
        if (lua_gettop(L) >= 3)
                port = MAY_LJMP(luaL_checkinteger(L, 3));