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+/*
+ * anytun
+ *
+ * The secure anycast tunneling protocol (satp) defines a protocol used
+ * for communication between any combination of unicast and anycast
+ * tunnel endpoints. It has less protocol overhead than IPSec in Tunnel
+ * mode and allows tunneling of every ETHER TYPE protocol (e.g.
+ * ethernet, ip, arp ...). satp directly includes cryptography and
+ * message authentication based on the methodes used by SRTP. It is
+ * intended to deliver a generic, scaleable and secure solution for
+ * tunneling and relaying of packets of any protocol.
+ *
+ *
+ * Copyright (C) 2007-2008 Othmar Gsenger, Erwin Nindl,
+ * Christian Pointner <satp@wirdorange.org>
+ *
+ * This file is part of Anytun.
+ *
+ * Anytun is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 3 as
+ * published by the Free Software Foundation.
+ *
+ * Anytun 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 anytun. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _RESOLVER_H_
+#define _RESOLVER_H_
+
+#include <queue>
+#include <boost/asio.hpp>
+
+#include "threadUtils.hpp"
+
+template<class Proto>
+class ResolveHandler
+{
+public:
+ ResolveHandler(const std::string& addr, const std::string& port);
+ void operator()(const boost::system::error_code& e, const boost::asio::ip::basic_resolver_iterator<Proto>);
+
+private:
+ std::string addr_;
+ std::string port_;
+};
+
+typedef ResolveHandler<boost::asio::ip::udp> UdpResolveHandler;
+typedef ResolveHandler<boost::asio::ip::tcp> TcpResolveHandler;
+
+class Resolver
+{
+public:
+ static Resolver& instance();
+
+ void init();
+ static void run(void* s);
+
+ void resolveUdp(const std::string& addr, const std::string& port);
+ void resolveTcp(const std::string& addr, const std::string& port);
+
+private:
+ Resolver();
+ ~Resolver();
+ Resolver(const Resolver &r);
+ void operator=(const Resolver &r);
+
+ static Resolver* inst;
+ static ::Mutex instMutex;
+ class instanceCleaner {
+ public: ~instanceCleaner() {
+ if(Resolver::inst != 0)
+ delete Resolver::inst;
+ }
+ };
+ friend class instanceCleaner;
+
+ boost::asio::io_service io_service_;
+ boost::asio::ip::udp::resolver udp_resolver_;
+ boost::asio::ip::tcp::resolver tcp_resolver_;
+ boost::thread* thread_;
+};
+
+extern Resolver& gResolver;
+
+#endif