diff --git a/HISTORY b/HISTORY
index 4291d657d0ef27ba4eea5eec6b1f1d12c2ccf895..d053ac83fd9d423ba7ce9de8d58d0e4fa196a7f0 100644
--- a/HISTORY
+++ b/HISTORY
@@ -1,5 +1,5 @@
 
-Version 1.44  2020-10-10
+Version 1.44  2020-10-19
   * add test file src/tests/test_pthread_lock.c
   * add uniq_skiplist.[hc]
   * add function split_string_ex
diff --git a/src/fast_task_queue.h b/src/fast_task_queue.h
index 72f3723c4cf842a2d41b55fe8e0a6684b5168f7e..b0bbd5ff4c119fae4455a3f02bfd9ace2935d520 100644
--- a/src/fast_task_queue.h
+++ b/src/fast_task_queue.h
@@ -83,7 +83,10 @@ struct fast_task_info
 	int length; //data length
 	int offset; //current offset
     uint16_t port; //peer port
-    volatile short nio_stage;  //stage for network IO
+    struct {
+        uint8_t current;
+        uint8_t notify;
+    } nio_stages; //stages for network IO
     bool canceled;   //if task canceled
     int connect_timeout; //for client side
     int network_timeout;