/* Copyright (c) 2003, Arvid Norberg All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. * Neither the name of the author nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef TORRENT_WEB_PEER_CONNECTION_HPP_INCLUDED #define TORRENT_WEB_PEER_CONNECTION_HPP_INCLUDED #include #include #include #include #include #ifdef _MSC_VER #pragma warning(push, 1) #endif #include #include #include #include #include #include #ifdef _MSC_VER #pragma warning(pop) #endif #include "libtorrent/config.hpp" #include "libtorrent/web_connection_base.hpp" #include "libtorrent/disk_buffer_holder.hpp" #include "libtorrent/torrent.hpp" #include "libtorrent/piece_block_progress.hpp" #include "libtorrent/http_parser.hpp" namespace libtorrent { class torrent; namespace detail { struct session_impl; } class TORRENT_EXTRA_EXPORT web_peer_connection : public web_connection_base { friend class invariant_access; public: // this is the constructor where the we are the active part. // The peer_conenction should handshake and verify that the // other end has the correct id web_peer_connection( aux::session_impl& ses , boost::weak_ptr t , boost::shared_ptr s , tcp::endpoint const& remote , std::string const& url , policy::peer* peerinfo , std::string const& ext_auth , web_seed_entry::headers_t const& ext_headers); virtual int type() const { return peer_connection::url_seed_connection; } // called from the main loop when this connection has any // work to do. void on_receive(error_code const& error , std::size_t bytes_transferred); std::string const& url() const { return m_url; } virtual void get_specific_peer_info(peer_info& p) const; virtual void disconnect(error_code const& ec, int error = 0); void write_request(peer_request const& r); private: bool maybe_harvest_block(); // returns the block currently being // downloaded. And the progress of that // block. If the peer isn't downloading // a piece for the moment, the boost::optional // will be invalid. boost::optional downloading_piece_progress() const; // this has one entry per http-request // (might be more than the bt requests) std::deque m_file_requests; std::string m_url; // this is used for intermediate storage of pieces // that are received in more than one HTTP response // TODO: if we make this be a disk_buffer_holder instead // we would save a copy sometimes std::vector m_piece; // the number of bytes received in the current HTTP // response. used to know where in the buffer the // next response starts size_type m_received_body; // position in the current range response size_type m_range_pos; // the position in the current block int m_block_pos; // this is the offset inside the current receive // buffer where the next chunk header will be. // this is updated for each chunk header that's // parsed. It does not necessarily point to a valid // offset in the receive buffer, if we haven't received // it yet. This offset never includes the HTTP header size_type m_chunk_pos; // this is the number of bytes we've already received // from the next chunk header we're waiting for int m_partial_chunk_header; }; } #endif // TORRENT_WEB_PEER_CONNECTION_HPP_INCLUDED