--- state_old.cc	2016-07-18 12:35:02.000000000 +0800
+++ state.cc	2016-08-15 16:58:35.813809843 +0800
@@ -86,6 +86,12 @@

   con->packet_size= drizzle_get_byte3(con->buffer_ptr);

+  if (con->buffer_size < con->packet_size)
+  {
+    con->push_state(drizzle_state_read);
+    return DRIZZLE_RETURN_OK;
+  }
+
   if (con->packet_number != con->buffer_ptr[3])
   {
     drizzle_set_error(con, "drizzle_state_packet_read",