forked from premiere/premiere-libtorrent
143 lines
4.1 KiB
C++
143 lines
4.1 KiB
C++
/*
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Copyright (c) 2003-2016, Arvid Norberg
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the distribution.
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* Neither the name of the author nor the names of its
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contributors may be used to endorse or promote products derived
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from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef TORRENT_UDP_TRACKER_CONNECTION_HPP_INCLUDED
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#define TORRENT_UDP_TRACKER_CONNECTION_HPP_INCLUDED
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#include "libtorrent/aux_/disable_warnings_push.hpp"
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#include <vector>
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#include <string>
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#include <utility>
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#include <ctime>
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#include <mutex>
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#include <boost/shared_ptr.hpp>
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#include <cstdint>
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#include "libtorrent/aux_/disable_warnings_pop.hpp"
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#include "libtorrent/udp_socket.hpp"
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#include "libtorrent/entry.hpp"
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#include "libtorrent/session_settings.hpp"
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#include "libtorrent/peer_id.hpp"
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#include "libtorrent/peer.hpp"
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#include "libtorrent/tracker_manager.hpp"
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#include "libtorrent/config.hpp"
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namespace libtorrent
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{
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class TORRENT_EXTRA_EXPORT udp_tracker_connection: public tracker_connection
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{
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friend class tracker_manager;
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public:
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udp_tracker_connection(
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io_service& ios
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, tracker_manager& man
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, tracker_request const& req
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, boost::weak_ptr<request_callback> c);
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void start();
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void close();
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std::uint32_t transaction_id() const { return m_transaction_id; }
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private:
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enum action_t
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{
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action_connect,
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action_announce,
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action_scrape,
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action_error
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};
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boost::shared_ptr<udp_tracker_connection> shared_from_this()
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{
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return boost::static_pointer_cast<udp_tracker_connection>(
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tracker_connection::shared_from_this());
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}
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void update_transaction_id();
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void name_lookup(error_code const& error
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, std::vector<address> const& addresses, int port);
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void timeout(error_code const& error);
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void start_announce();
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bool on_receive(udp::endpoint const& ep, aux::array_view<char const> buf);
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bool on_receive_hostname(char const* hostname, aux::array_view<char const> buf);
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bool on_connect_response(aux::array_view<char const> buf);
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bool on_announce_response(aux::array_view<char const> buf);
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bool on_scrape_response(aux::array_view<char const> buf);
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// wraps tracker_connection::fail
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void fail(error_code const& ec, int code = -1
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, char const* msg = "", int interval = 0, int min_interval = 0);
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void send_udp_connect();
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void send_udp_announce();
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void send_udp_scrape();
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virtual void on_timeout(error_code const& ec);
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udp::endpoint pick_target_endpoint() const;
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std::string m_hostname;
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std::vector<tcp::endpoint> m_endpoints;
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struct connection_cache_entry
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{
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std::int64_t connection_id;
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time_point expires;
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};
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static std::map<address, connection_cache_entry> m_connection_cache;
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static std::mutex m_cache_mutex;
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udp::endpoint m_target;
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std::uint32_t m_transaction_id;
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int m_attempts;
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// action_t
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std::uint8_t m_state;
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bool m_abort;
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};
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}
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#endif // TORRENT_UDP_TRACKER_CONNECTION_HPP_INCLUDED
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