4 * The secure anycast tunneling protocol (satp) defines a protocol used
5 * for communication between any combination of unicast and anycast
6 * tunnel endpoints. It has less protocol overhead than IPSec in Tunnel
7 * mode and allows tunneling of every ETHER TYPE protocol (e.g.
8 * ethernet, ip, arp ...). satp directly includes cryptography and
9 * message authentication based on the methods used by SRTP. It is
10 * intended to deliver a generic, scaleable and secure solution for
11 * tunneling and relaying of packets of any protocol.
14 * Copyright (C) 2007-2014 Markus Grüneis, Othmar Gsenger, Erwin Nindl,
15 * Christian Pointner <satp@wirdorange.org>
17 * This file is part of Anytun.
19 * Anytun is free software: you can redistribute it and/or modify
20 * it under the terms of the GNU General Public License as published by
21 * the Free Software Foundation, either version 3 of the License, or
24 * Anytun is distributed in the hope that it will be useful,
25 * but WITHOUT ANY WARRANTY; without even the implied warranty of
26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
27 * GNU General Public License for more details.
29 * You should have received a copy of the GNU General Public License
30 * along with Anytun. If not, see <http://www.gnu.org/licenses/>.
32 * In addition, as a special exception, the copyright holders give
33 * permission to link the code of portions of this program with the
34 * OpenSSL library under certain conditions as described in each
35 * individual source file, and distribute linked combinations
37 * You must obey the GNU General Public License in all respects
38 * for all of the code used other than OpenSSL. If you modify
39 * file(s) with this exception, you may extend this exception to your
40 * version of the file(s), but you are not obligated to do so. If you
41 * do not wish to do so, delete this exception statement from your
42 * version. If you delete this exception statement from all source
43 * files in the program, then also delete it here.
46 #ifndef ANYTUN_packetSource_h_INCLUDED
47 #define ANYTUN_packetSource_h_INCLUDED
49 #include <boost/asio.hpp>
50 #include <boost/thread.hpp>
54 #include "datatypes.h"
55 #include "threadUtils.hpp"
57 // TODO: fix this when other packetSource types are introduced
58 typedef boost::asio::ip::udp::endpoint PacketSourceEndpoint;
59 typedef boost::asio::ip::udp::resolver::iterator PacketSourceResolverIt;
64 virtual ~PacketSource() {}
66 virtual uint32_t recv(uint8_t* buf, uint32_t len, PacketSourceEndpoint& remote) = 0;
67 virtual void send(uint8_t* buf, uint32_t len, PacketSourceEndpoint remote) = 0;
69 void waitUntilReady();
75 class UDPPacketSource : public PacketSource
78 typedef boost::asio::ip::udp proto;
80 UDPPacketSource(std::string localaddr, std::string port);
83 uint32_t recv(uint8_t* buf, uint32_t len, PacketSourceEndpoint& remote);
84 void send(uint8_t* buf, uint32_t len, PacketSourceEndpoint remote);
86 void onResolve(PacketSourceResolverIt it);
87 void onError(const std::runtime_error& e);
90 boost::asio::io_service io_service_;
98 std::list<SocketsElement> sockets_;
100 void recv_thread(std::list<SocketsElement>::iterator it);
103 PacketSourceEndpoint remote_;
104 std::list<SocketsElement>::iterator it_;
106 std::queue<ThreadResult> thread_result_queue_;
107 Mutex thread_result_mutex_;
108 Semaphore thread_result_sem_;