Next part of merge. See TODO for details

include/mysql_com_server.h

@@ -0,0 +1,41 @@
+/* Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; version 2 of the License.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA */
+
+/*
+  Definitions private to the server,
+  used in the networking layer to notify specific events.
+*/
+
+#ifndef _mysql_com_server_h
+#define _mysql_com_server_h
+
+struct st_net_server;
+
+typedef void (*before_header_callback_fn)
+  (struct st_net *net, void *user_data, size_t count);
+
+typedef void (*after_header_callback_fn)
+  (struct st_net *net, void *user_data, size_t count, my_bool rc);
+
+struct st_net_server
+{
+  before_header_callback_fn m_before_header;
+  after_header_callback_fn m_after_header;
+  void *m_user_data;
+};
+
+typedef struct st_net_server NET_SERVER;
+
+#endif