Auto-reconnect PubSub on get_message (#1574)

Author: luhn

redis/client.py

@@ -1259,7 +1259,10 @@ def parse_response(self, block=True, timeout=0):
 
         self.check_health()
 
-        if not block and not conn.can_read(timeout=timeout):
+        if(
+                not block
+                and not self._execute(conn, conn.can_read, timeout=timeout)
+        ):
             return None
         response = self._execute(conn, conn.read_response)