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diff --git a/src/ceph/src/msg/async/net_handler.h b/src/ceph/src/msg/async/net_handler.h
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+++ b/src/ceph/src/msg/async/net_handler.h
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+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- 
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2014 UnitedStack <haomai@unitedstack.com>
+ *
+ * Author: Haomai Wang <haomaiwang@gmail.com>
+ *
+ * This is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software
+ * Foundation.  See file COPYING.
+ *
+ */
+
+#ifndef CEPH_COMMON_NET_UTILS_H
+#define CEPH_COMMON_NET_UTILS_H
+#include "common/config.h"
+
+namespace ceph {
+  class NetHandler {
+    int generic_connect(const entity_addr_t& addr, const entity_addr_t& bind_addr, bool nonblock);
+
+    CephContext *cct;
+   public:
+    int create_socket(int domain, bool reuse_addr=false);
+    explicit NetHandler(CephContext *c): cct(c) {}
+    int set_nonblock(int sd);
+    void set_close_on_exec(int sd);
+    int set_socket_options(int sd, bool nodelay, int size);
+    int connect(const entity_addr_t &addr, const entity_addr_t& bind_addr);
+    
+    /**
+     * Try to reconnect the socket.
+     *
+     * @return    0         success
+     *            > 0       just break, and wait for event
+     *            < 0       need to goto fail
+     */
+    int reconnect(const entity_addr_t &addr, int sd);
+    int nonblock_connect(const entity_addr_t &addr, const entity_addr_t& bind_addr);
+    void set_priority(int sd, int priority, int domain);
+  };
+}
+
+#endif