119 lines
3.7 KiB
C++
119 lines
3.7 KiB
C++
/*
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Copyright (c) 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 BITTORRENT_PEER_HPP
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#define BITTORRENT_PEER_HPP
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#include "libtorrent/socket.hpp"
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#include "libtorrent/sha1_hash.hpp"
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#include "libtorrent/io_service.hpp"
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#include "libtorrent/time.hpp"
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#include "libtorrent/address.hpp"
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#include "libtorrent/torrent_info.hpp"
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#include "test.hpp" // for EXPORT
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#include <functional>
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using namespace libtorrent;
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struct EXPORT peer_conn
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{
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enum peer_mode_t
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{ uploader, downloader, idle };
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peer_conn(io_service& ios
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, std::function<void(int, char const*, int)> on_msg
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, libtorrent::torrent_info const& ti
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, libtorrent::tcp::endpoint const& ep
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, peer_mode_t mode);
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void start_conn();
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void on_connect(error_code const& ec);
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void on_handshake(char* h, error_code const& ec, size_t bytes_transferred);
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void on_handshake2(error_code const& ec, size_t bytes_transferred);
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void write_have_all();
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void on_have_all_sent(error_code const& ec, size_t bytes_transferred);
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bool write_request();
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void on_req_sent(char* m, error_code const& ec, size_t bytes_transferred);
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void close(char const* fmt, error_code const& ec);
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void work_download();
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void on_msg_length(error_code const& ec, size_t bytes_transferred);
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void on_message(error_code const& ec, size_t bytes_transferred);
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bool verify_piece(int piece, int start, char const* ptr, int size);
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void write_piece(int piece, int start, int length);
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void write_have(int piece);
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void abort();
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private:
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tcp::socket s;
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char write_buf_proto[100];
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std::uint32_t write_buffer[17*1024/4];
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std::uint32_t buffer[17*1024/4];
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peer_mode_t m_mode;
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torrent_info const& m_ti;
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int read_pos;
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std::function<void(int, char const*, int)> m_on_msg;
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enum state_t
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{
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handshaking,
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sending_request,
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receiving_message
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};
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int state;
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std::vector<int> pieces;
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std::vector<int> suggested_pieces;
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std::vector<int> allowed_fast;
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bool choked;
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int current_piece; // the piece we're currently requesting blocks from
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bool m_current_piece_is_allowed;
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int block;
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int const m_blocks_per_piece;
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int outstanding_requests;
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// if this is true, this connection is a seed
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bool fast_extension;
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int blocks_received;
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int blocks_sent;
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time_point start_time;
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time_point end_time;
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tcp::endpoint endpoint;
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bool restarting;
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};
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#endif
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