--- a/memcache.h	Wed Aug 27 21:30:32 2008 +0300
+++ b/memcache.h	Wed Aug 27 22:42:27 2008 +0300
@@ -84,6 +84,10 @@
 enum memcache_req_state {
     MEMCACHE_STATE_INVALID,
 
+    MEMCACHE_STATE_QUEUED,
+    MEMCACHE_STATE_SEND,
+    MEMCACHE_STATE_REPLY,
+
     MEMCACHE_STATE_ERROR,
 };