114 lines
3.9 KiB
C++
114 lines
3.9 KiB
C++
/*
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Copyright (c) 2008-2018, 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_HTTP_SEED_CONNECTION_HPP_INCLUDED
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#define TORRENT_HTTP_SEED_CONNECTION_HPP_INCLUDED
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#include <ctime>
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#include <algorithm>
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#include <string>
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#include <cstdint>
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#include "libtorrent/config.hpp"
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#include "libtorrent/web_connection_base.hpp"
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#include "libtorrent/piece_block_progress.hpp"
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namespace libtorrent {
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class torrent;
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struct peer_request;
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class TORRENT_EXTRA_EXPORT http_seed_connection
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: public web_connection_base
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{
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friend class invariant_access;
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public:
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// this is the constructor where the we are the active part.
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// The peer_connection should handshake and verify that the
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// other end has the correct id
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http_seed_connection(peer_connection_args const& pack
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, web_seed_t& web);
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connection_type type() const override
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{ return connection_type::http_seed; }
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// called from the main loop when this connection has any
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// work to do.
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void on_receive(error_code const& error
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, std::size_t bytes_transferred) override;
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void on_connected() override;
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std::string const& url() const override { return m_url; }
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void get_specific_peer_info(peer_info& p) const override;
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void disconnect(error_code const& ec, operation_t op
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, disconnect_severity_t error = peer_connection_interface::normal) override;
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void write_request(peer_request const& r) override;
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private:
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// returns the block currently being
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// downloaded. And the progress of that
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// block. If the peer isn't downloading
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// a piece for the moment, the boost::optional
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// will be invalid.
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piece_block_progress downloading_piece_progress() const override;
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// this is const since it's used as a key in the web seed list in the torrent
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// if it's changed referencing back into that list will fail
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const std::string m_url;
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web_seed_t* m_web;
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// the number of bytes left to receive of the response we're
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// currently parsing
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std::int64_t m_response_left;
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// this is the offset inside the current receive
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// buffer where the next chunk header will be.
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// this is updated for each chunk header that's
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// parsed. It does not necessarily point to a valid
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// offset in the receive buffer, if we haven't received
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// it yet. This offset never includes the HTTP header
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std::int64_t m_chunk_pos;
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// this is the number of bytes we've already received
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// from the next chunk header we're waiting for
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int m_partial_chunk_header;
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};
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}
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#endif // TORRENT_WEB_PEER_CONNECTION_HPP_INCLUDED
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