include/libtorrent/lsd.hpp

   1 /*
   2
   3 Copyright (c) 2007, Arvid Norberg
   4 All rights reserved.
   5
   6 Redistribution and use in source and binary forms, with or without
   7 modification, are permitted provided that the following conditions
   8 are met:
   9
  10     * Redistributions of source code must retain the above copyright
  11       notice, this list of conditions and the following disclaimer.
  12     * Redistributions in binary form must reproduce the above copyright
  13       notice, this list of conditions and the following disclaimer in
  14       the documentation and/or other materials provided with the distribution.
  15     * Neither the name of the author nor the names of its
  16       contributors may be used to endorse or promote products derived
  17       from this software without specific prior written permission.
  18
  19 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  20 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  23 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29 POSSIBILITY OF SUCH DAMAGE.
  30
  31 */
  32
  33 #ifndef TORRENT_LSD_HPP
  34 #define TORRENT_LSD_HPP
  35
  36 #include "libtorrent/socket.hpp"
  37 #include "libtorrent/peer_id.hpp"
  38 #include "libtorrent/broadcast_socket.hpp"
  39 #include "libtorrent/intrusive_ptr_base.hpp"
  40
  41 #include <boost/function.hpp>
  42 #include <boost/noncopyable.hpp>
  43 #include <boost/shared_ptr.hpp>
  44 #include <boost/thread/mutex.hpp>
  45 #include <boost/thread/condition.hpp>
  46
  47 #if defined(TORRENT_LOGGING) || defined(TORRENT_VERBOSE_LOGGING)
  48 #include <fstream>
  49 #endif
  50
  51 namespace libtorrent
  52 {
  53
  54 typedef boost::function<void(tcp::endpoint, sha1_hash)> peer_callback_t;
  55
  56 class lsd : public intrusive_ptr_base<lsd>
  57 {
  58 public:
  59         lsd(io_service& ios, address const& listen_interface
  60                 , peer_callback_t const& cb);
  61         ~lsd();
  62
  63 //      void rebind(address const& listen_interface);
  64
  65         void announce(sha1_hash const& ih, int listen_port);
  66         void close();
  67
  68 private:
  69
  70         void resend_announce(error_code const& e, std::string msg);
  71         void on_announce(udp::endpoint const& from, char* buffer
  72                 , std::size_t bytes_transferred);
  73 //      void setup_receive();
  74
  75         peer_callback_t m_callback;
  76
  77         // current retry count
  78         int m_retry_count;
  79
  80         // the udp socket used to send and receive
  81         // multicast messages on
  82         broadcast_socket m_socket;
  83
  84         // used to resend udp packets in case
  85         // they time out
  86         deadline_timer m_broadcast_timer;
  87
  88         bool m_disabled;
  89 #if defined(TORRENT_LOGGING) || defined(TORRENT_VERBOSE_LOGGING)
  90         std::ofstream m_log;
  91 #endif
  92 };
  93
  94 }
  95
  96
  97 #endif
  98