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 methodes 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) 2007-2009 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/>.
33 #ifndef ANYTUN_packetSource_h_INCLUDED
34 #define ANYTUN_packetSource_h_INCLUDED
36 #include <boost/asio.hpp>
37 #include <boost/thread.hpp>
41 #include "datatypes.h"
42 #include "threadUtils.hpp"
44 // TODO: fix this when other packetSource types are introduced
45 typedef boost::asio::ip::udp::endpoint PacketSourceEndpoint;
46 typedef boost::asio::ip::udp::resolver::iterator PacketSourceResolverIt;
51 virtual ~PacketSource() {}
53 virtual uint32_t recv(uint8_t* buf, uint32_t len, PacketSourceEndpoint& remote) = 0;
54 virtual void send(uint8_t* buf, uint32_t len, PacketSourceEndpoint remote) = 0;
56 void waitUntilReady();
62 class UDPPacketSource : public PacketSource
65 typedef boost::asio::ip::udp proto;
67 UDPPacketSource(std::string localaddr, std::string port);
70 uint32_t recv(uint8_t* buf, uint32_t len, PacketSourceEndpoint& remote);
71 void send(uint8_t* buf, uint32_t len, PacketSourceEndpoint remote);
73 void onResolve(PacketSourceResolverIt& it);
74 void onError(const std::runtime_error& e);
77 boost::asio::io_service io_service_;
85 std::list<SocketsElement> sockets_;
87 void recv_thread(std::list<SocketsElement>::iterator it);
90 PacketSourceEndpoint remote_;
91 std::list<SocketsElement>::iterator it_;
93 std::queue<ThreadResult> thread_result_queue_;
94 Mutex thread_result_mutex_;
95 Semaphore thread_result_sem_;