forked from premiere/premiere-libtorrent
optimize tracker_manager interface to avoid rendering and parsing strings for each peer-ip
This commit is contained in:
parent
931c5530c2
commit
8664ff97aa
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@ -1262,14 +1262,7 @@ namespace libtorrent
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void tracker_response(tracker_request const&
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, libtorrent::address const& tracker_ip
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, std::list<address> const& ip_list
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, std::vector<peer_entry>& peers
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, int interval
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, int min_interval
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, int complete
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, int incomplete
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, int downloaded
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, address const& external_ip
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, std::string const& tracker_id);
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, struct tracker_response const& resp);
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void tracker_request_timed_out(
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tracker_request const&);
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void tracker_request_error(tracker_request const& r
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@ -42,21 +42,31 @@ namespace libtorrent
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struct TORRENT_EXTRA_EXPORT peer_entry
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{
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std::string ip;
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int port;
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std::string hostname;
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peer_id pid;
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boost::uint16_t port;
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bool operator==(const peer_entry& p) const
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{
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return pid == p.pid;
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}
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{ return pid == p.pid; }
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bool operator<(const peer_entry& p) const
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{
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return pid < p.pid;
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}
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{ return pid < p.pid; }
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};
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struct ipv4_peer_entry
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{
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address_v4::bytes_type ip;
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boost::uint16_t port;
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};
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#if TORRENT_USE_IPV6
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struct ipv6_peer_entry
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{
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address_v6::bytes_type ip;
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boost::uint16_t port;
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};
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#endif
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}
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#endif // TORRENT_PEER_HPP_INCLUDED
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@ -661,9 +661,7 @@ namespace libtorrent
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tracker_request const& r
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, address const& tracker_ip
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, std::list<address> const& ip_list
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, std::vector<peer_entry>& e, int interval, int min_interval
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, int complete, int incomplete, int downloaded
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, address const& external_ip, std::string const& trackerid);
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, struct tracker_response const& resp);
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virtual void tracker_request_error(tracker_request const& r
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, int response_code, error_code const& ec, const std::string& msg
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, int retry_interval);
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@ -143,6 +143,30 @@ namespace libtorrent
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#endif
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};
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struct tracker_response
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{
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tracker_response()
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: interval(1800)
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, min_interval(120)
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, complete(-1)
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, incomplete(-1)
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, downloaded(-1)
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{}
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std::vector<peer_entry> peers;
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std::vector<ipv4_peer_entry> peers4;
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#if TORRENT_USE_IPV6
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std::vector<ipv6_peer_entry> peers6;
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#endif
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address external_ip;
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std::string trackerid;
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int interval;
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int min_interval;
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int complete;
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int incomplete;
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int downloaded;
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};
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struct TORRENT_EXTRA_EXPORT request_callback
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{
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friend class tracker_manager;
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@ -157,14 +181,7 @@ namespace libtorrent
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tracker_request const& req
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, address const& tracker_ip
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, std::list<address> const& ip_list
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, std::vector<peer_entry>& peers
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, int interval
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, int min_interval
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, int complete
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, int incomplete
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, int downloaded
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, address const& external_ip
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, std::string const& trackerid) = 0;
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, struct tracker_response const& response) = 0;
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virtual void tracker_request_error(
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tracker_request const& req
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, int response_code
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@ -369,7 +369,7 @@ namespace libtorrent
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fail(error_code(errors::invalid_tracker_response));
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return false;
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}
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ret.ip = i->string_value();
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ret.hostname = i->string_value();
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// extract port
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i = info.dict_find_int("port");
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@ -383,21 +383,25 @@ namespace libtorrent
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return true;
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}
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// TODO: 2 make this a free function that can be easily unit tested
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void http_tracker_connection::parse(int status_code, lazy_entry const& e)
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{
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boost::shared_ptr<request_callback> cb = requester();
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if (!cb) return;
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int interval = int(e.dict_find_int_value("interval", 0));
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int min_interval = int(e.dict_find_int_value("min interval", 30));
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// if no interval is specified, default to 30 minutes
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if (interval == 0) interval = 1800;
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std::string trackerid;
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int min_interval = int(e.dict_find_int_value("min interval", 30));
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tracker_response resp;
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resp.interval = interval;
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resp.min_interval = min_interval;
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lazy_entry const* tracker_id = e.dict_find_string("tracker id");
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if (tracker_id)
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trackerid = tracker_id->string_value();
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resp.trackerid = tracker_id->string_value();
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// parse the response
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lazy_entry const* failure = e.dict_find_string("failure reason");
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if (failure)
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@ -411,8 +415,6 @@ namespace libtorrent
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if (warning)
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cb->tracker_warning(tracker_req(), warning->string_value());
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std::vector<peer_entry> peer_list;
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if (tracker_req().kind == tracker_request::scrape_request)
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{
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std::string ih = tracker_req().info_hash.to_string();
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@ -447,27 +449,27 @@ namespace libtorrent
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{
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char const* peers = peers_ent->string_ptr();
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int len = peers_ent->string_length();
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resp.peers4.reserve(len / 6);
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for (int i = 0; i < len; i += 6)
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{
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if (len - i < 6) break;
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peer_entry p;
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p.pid.clear();
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ipv4_peer_entry p;
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error_code ec;
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p.ip = detail::read_v4_address(peers).to_string(ec);
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p.ip = detail::read_v4_address(peers).to_v4().to_bytes();
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p.port = detail::read_uint16(peers);
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if (ec) continue;
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peer_list.push_back(p);
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resp.peers4.push_back(p);
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}
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}
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else if (peers_ent && peers_ent->type() == lazy_entry::list_t)
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{
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int len = peers_ent->list_size();
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resp.peers.reserve(len);
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for (int i = 0; i < len; ++i)
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{
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peer_entry p;
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if (!extract_peer_info(*peers_ent->list_at(i), p)) return;
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peer_list.push_back(p);
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resp.peers.push_back(p);
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}
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}
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else
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@ -481,17 +483,15 @@ namespace libtorrent
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{
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char const* peers = ipv6_peers->string_ptr();
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int len = ipv6_peers->string_length();
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resp.peers6.reserve(len / 18);
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for (int i = 0; i < len; i += 18)
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{
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if (len - i < 18) break;
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peer_entry p;
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p.pid.clear();
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error_code ec;
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p.ip = detail::read_v6_address(peers).to_string(ec);
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ipv6_peer_entry p;
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p.ip = detail::read_v6_address(peers).to_v6().to_bytes();
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p.port = detail::read_uint16(peers);
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if (ec) continue;
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peer_list.push_back(p);
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resp.peers6.push_back(p);
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}
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}
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else
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@ -511,25 +511,22 @@ namespace libtorrent
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return;
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}
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// look for optional scrape info
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address external_ip;
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lazy_entry const* ip_ent = e.dict_find_string("external ip");
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if (ip_ent)
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{
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char const* p = ip_ent->string_ptr();
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if (ip_ent->string_length() == int(address_v4::bytes_type().size()))
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external_ip = detail::read_v4_address(p);
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resp.external_ip = detail::read_v4_address(p);
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#if TORRENT_USE_IPV6
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else if (ip_ent->string_length() == int(address_v6::bytes_type().size()))
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external_ip = detail::read_v6_address(p);
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resp.external_ip = detail::read_v6_address(p);
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#endif
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}
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int complete = int(e.dict_find_int_value("complete", -1));
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int incomplete = int(e.dict_find_int_value("incomplete", -1));
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int downloaded = int(e.dict_find_int_value("downloaded", -1));
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// look for optional scrape info
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resp.complete = int(e.dict_find_int_value("complete", -1));
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resp.incomplete = int(e.dict_find_int_value("incomplete", -1));
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resp.downloaded = int(e.dict_find_int_value("downloaded", -1));
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std::list<address> ip_list;
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if (m_tracker_connection)
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@ -544,8 +541,7 @@ namespace libtorrent
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}
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}
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cb->tracker_response(tracker_req(), m_tracker_ip, ip_list, peer_list
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, interval, min_interval, complete, incomplete, downloaded, external_ip, trackerid);
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cb->tracker_response(tracker_req(), m_tracker_ip, ip_list, resp);
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}
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}
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@ -7778,33 +7778,38 @@ retry:
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void tracker_logger::tracker_response(tracker_request const&
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, libtorrent::address const& tracker_ip
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, std::list<address> const& ip_list
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, std::vector<peer_entry>& peers
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, int interval
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, int min_interval
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, int complete
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, int incomplete
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, int downloaded
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, address const& external_ip
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, std::string const& tracker_id)
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, struct tracker_response const& resp)
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{
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std::string s;
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s = "TRACKER RESPONSE:\n";
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char tmp[200];
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snprintf(tmp, 200, "interval: %d\nmin_interval: %d\npeers:\n", interval, min_interval);
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s += tmp;
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for (std::vector<peer_entry>::const_iterator i = peers.begin();
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i != peers.end(); ++i)
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{
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char pid[41];
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to_hex((const char*)&i->pid[0], 20, pid);
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if (i->pid.is_all_zeros()) pid[0] = 0;
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#if defined TORRENT_VERBOSE_LOGGING || defined TORRENT_LOGGING
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debug_log("TRACKER RESPONSE\n"
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"interval: %d\n"
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"external ip: %s\n"
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"we connected to: %s\n"
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"peers:"
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, interval
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, print_address(resp.external_ip).c_str()
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, print_address(resp.tracker_ip).c_str());
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snprintf(tmp, 200, " %-16s %-5d %s\n", i->ip.c_str(), i->port, pid);
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s += tmp;
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for (std::vector<peer_entry>::const_iterator i = resp.peers.begin();
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i != resp.peers.end(); ++i)
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{
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debug_log(" %16s %5d %s %s", i->hostname.c_str(), i->port
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, i->pid.is_all_zeros()?"":to_hex(i->pid.to_string()).c_str()
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, identify_client(i->pid).c_str());
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}
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snprintf(tmp, 200, "external ip: %s\n", print_address(external_ip).c_str());
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s += tmp;
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debug_log("%s", s.c_str());
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for (std::vector<ipv4_peer_entry>::const_iterator i = resp.peers4.begin();
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i != resp.peers4.end(); ++i)
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{
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debug_log(" %16s %5d", print_address(i->ip).c_str(), i->port);
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}
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#if TORRENT_USE_IPV6
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for (std::vector<ipv6_peer_entry>::const_iterator i = resp.peers6.begin();
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i != resp.peers6.end(); ++i)
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{
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debug_log(" %16s %5d", print_address(i->ip).c_str(), i->port);
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}
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#endif
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#endif
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}
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void tracker_logger::tracker_request_timed_out(
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175
src/torrent.cpp
175
src/torrent.cpp
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@ -3117,42 +3117,34 @@ namespace libtorrent
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m_need_save_resume_data = true;
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}
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// TODO: 3 change the tracker_response interface to take a type capturing
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// the response. Have multiple peer lists. IPv4, IPv6 and hostnames. That
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// way we don't need to render addresses into strings
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void torrent::tracker_response(
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tracker_request const& r
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, address const& tracker_ip // this is the IP we connected to
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, std::list<address> const& tracker_ips // these are all the IPs it resolved to
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, std::vector<peer_entry>& peer_list
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, int interval
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, int min_interval
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, int complete
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, int incomplete
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, int downloaded
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, address const& external_ip
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, const std::string& trackerid)
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, struct tracker_response const& resp)
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{
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TORRENT_ASSERT(is_single_thread());
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INVARIANT_CHECK;
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TORRENT_ASSERT(r.kind == tracker_request::announce_request);
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if (external_ip != address() && !tracker_ips.empty())
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m_ses.set_external_address(external_ip, aux::session_interface::source_tracker
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if (resp.external_ip != address() && !tracker_ips.empty())
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m_ses.set_external_address(resp.external_ip
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, aux::session_interface::source_tracker
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, *tracker_ips.begin());
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ptime now = time_now();
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int interval = resp.interval;
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if (interval < settings().get_int(settings_pack::min_announce_interval))
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interval = settings().get_int(settings_pack::min_announce_interval);
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announce_entry* ae = find_tracker(r);
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if (ae)
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{
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if (incomplete >= 0) ae->scrape_incomplete = incomplete;
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if (complete >= 0) ae->scrape_complete = complete;
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if (downloaded >= 0) ae->scrape_downloaded = downloaded;
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if (resp.incomplete >= 0) ae->scrape_incomplete = resp.incomplete;
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if (resp.complete >= 0) ae->scrape_complete = resp.complete;
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if (resp.downloaded >= 0) ae->scrape_downloaded = resp.downloaded;
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if (!ae->start_sent && r.event == tracker_request::started)
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ae->start_sent = true;
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if (!ae->complete_sent && r.event == tracker_request::completed)
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@ -3161,22 +3153,23 @@ namespace libtorrent
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ae->updating = false;
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ae->fails = 0;
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ae->next_announce = now + seconds(interval);
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ae->min_announce = now + seconds(min_interval);
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ae->min_announce = now + seconds(resp.min_interval);
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int tracker_index = ae - &m_trackers[0];
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m_last_working_tracker = prioritize_tracker(tracker_index);
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if ((!trackerid.empty()) && (ae->trackerid != trackerid))
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if ((!resp.trackerid.empty()) && (ae->trackerid != resp.trackerid))
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{
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ae->trackerid = trackerid;
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ae->trackerid = resp.trackerid;
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if (m_ses.alerts().should_post<trackerid_alert>())
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m_ses.alerts().post_alert(trackerid_alert(get_handle(), r.url, trackerid));
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m_ses.alerts().post_alert(trackerid_alert(get_handle()
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, r.url, resp.trackerid));
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}
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update_scrape_state();
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}
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update_tracker_timer(now);
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if (complete >= 0 && incomplete >= 0)
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if (resp.complete >= 0 && resp.incomplete >= 0)
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m_last_scrape = m_ses.session_time();
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#if defined TORRENT_VERBOSE_LOGGING || defined TORRENT_LOGGING
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@ -3186,89 +3179,109 @@ namespace libtorrent
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"we connected to: %s\n"
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"peers:"
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, interval
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, print_address(external_ip).c_str()
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, print_address(tracker_ip).c_str());
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, print_address(resp.external_ip).c_str()
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, print_address(resp.tracker_ip).c_str());
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for (std::vector<peer_entry>::const_iterator i = peer_list.begin();
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i != peer_list.end(); ++i)
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for (std::vector<peer_entry>::const_iterator i = resp.peers.begin();
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i != resp.peers.end(); ++i)
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{
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debug_log(" %16s %5d %s %s", i->ip.c_str(), i->port
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debug_log(" %16s %5d %s %s", i->hostname.c_str(), i->port
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, i->pid.is_all_zeros()?"":to_hex(i->pid.to_string()).c_str()
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, identify_client(i->pid).c_str());
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}
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for (std::vector<ipv4_peer_entry>::const_iterator i = resp.peers4.begin();
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i != resp.peers4.end(); ++i)
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{
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debug_log(" %16s %5d", print_address(i->ip).c_str(), i->port);
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}
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#if TORRENT_USE_IPV6
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for (std::vector<ipv6_peer_entry>::const_iterator i = resp.peers6.begin();
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i != resp.peers6.end(); ++i)
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{
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debug_log(" %16s %5d", print_address(i->ip).c_str(), i->port);
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}
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#endif
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#endif
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// for each of the peers we got from the tracker
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for (std::vector<peer_entry>::iterator i = peer_list.begin();
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i != peer_list.end(); ++i)
|
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for (std::vector<peer_entry>::const_iterator i = resp.peers.begin();
|
||||
i != resp.peers.end(); ++i)
|
||||
{
|
||||
// don't make connections to ourself
|
||||
if (i->pid == m_ses.get_peer_id())
|
||||
continue;
|
||||
|
||||
error_code ec;
|
||||
tcp::endpoint a(address::from_string(i->ip, ec), i->port);
|
||||
|
||||
if (ec)
|
||||
{
|
||||
// assume this is because we got a hostname instead of
|
||||
// an ip address from the tracker
|
||||
|
||||
#if TORRENT_USE_I2P
|
||||
char const* top_domain = strrchr(i->ip.c_str(), '.');
|
||||
if (top_domain && strcmp(top_domain, ".i2p") == 0)
|
||||
{
|
||||
// this is an i2p name, we need to use the sam connection
|
||||
// to do the name lookup
|
||||
/*
|
||||
m_ses.m_i2p_conn.async_name_lookup(i->ip.c_str()
|
||||
, boost::bind(&torrent::on_i2p_resolve
|
||||
, shared_from_this(), _1));
|
||||
*/
|
||||
// it seems like you're not supposed to do a name lookup
|
||||
// on the peers returned from the tracker, but just strip
|
||||
// the .i2p and use it as a destination
|
||||
i->ip.resize(i->ip.size() - 4);
|
||||
torrent_state st = get_policy_state();
|
||||
need_policy();
|
||||
if (m_policy->add_i2p_peer(i->ip.c_str(), peer_info::tracker, 0, &st))
|
||||
state_updated();
|
||||
peers_erased(st.erased);
|
||||
}
|
||||
else
|
||||
#endif
|
||||
{
|
||||
#if defined TORRENT_ASIO_DEBUGGING
|
||||
add_outstanding_async("torrent::on_peer_name_lookup");
|
||||
#endif
|
||||
tcp::resolver::query q(i->ip, to_string(i->port).elems);
|
||||
// TODO: instead, borrow host resolvers from a pool in session_impl. That
|
||||
// would make the torrent object smaller
|
||||
m_ses.get_resolver().async_resolve(i->ip, 0
|
||||
, boost::bind(&torrent::on_peer_name_lookup
|
||||
, shared_from_this(), _1, _2, i->port));
|
||||
}
|
||||
char const* top_domain = strrchr(i->hostname.c_str(), '.');
|
||||
if (top_domain && strcmp(top_domain, ".i2p") == 0)
|
||||
{
|
||||
// this is an i2p name, we need to use the sam connection
|
||||
// to do the name lookup
|
||||
/*
|
||||
m_ses.m_i2p_conn.async_name_lookup(i->ip.c_str()
|
||||
, boost::bind(&torrent::on_i2p_resolve
|
||||
, shared_from_this(), _1));
|
||||
*/
|
||||
// it seems like you're not supposed to do a name lookup
|
||||
// on the peers returned from the tracker, but just strip
|
||||
// the .i2p and use it as a destination
|
||||
std::string hostname = i->hostname.substr(i->hostname.size() - 4);
|
||||
torrent_state st = get_policy_state();
|
||||
need_policy();
|
||||
if (m_policy->add_i2p_peer(hostname.c_str(), peer_info::tracker, 0, &st))
|
||||
state_updated();
|
||||
peers_erased(st.erased);
|
||||
}
|
||||
else
|
||||
#endif
|
||||
{
|
||||
// ignore local addresses from the tracker (unless the tracker is local too)
|
||||
// there are 2 reasons to allow this:
|
||||
// 1. retrackers are popular in russia, where an ISP runs a tracker within
|
||||
// the AS (but not on the local network) giving out peers only from the
|
||||
// local network
|
||||
// 2. it might make sense to have a tracker extension in the future where
|
||||
// trackers records a peer's internal and external IP, and match up
|
||||
// peers on the same local network
|
||||
// if (is_local(a.address()) && !is_local(tracker_ip)) continue;
|
||||
if (add_peer(a, peer_info::tracker))
|
||||
state_updated();
|
||||
#if defined TORRENT_ASIO_DEBUGGING
|
||||
add_outstanding_async("torrent::on_peer_name_lookup");
|
||||
#endif
|
||||
tcp::resolver::query q(i->hostname, to_string(i->port).elems);
|
||||
m_ses.get_resolver().async_resolve(i->hostname, 0
|
||||
, boost::bind(&torrent::on_peer_name_lookup
|
||||
, shared_from_this(), _1, _2, i->port));
|
||||
}
|
||||
}
|
||||
|
||||
// there are 2 reasons to allow local IPs to be returned from a
|
||||
// non-local tracker
|
||||
// 1. retrackers are popular in russia, where an ISP runs a tracker within
|
||||
// the AS (but not on the local network) giving out peers only from the
|
||||
// local network
|
||||
// 2. it might make sense to have a tracker extension in the future where
|
||||
// trackers records a peer's internal and external IP, and match up
|
||||
// peers on the same local network
|
||||
|
||||
bool need_update = false;
|
||||
for (std::vector<ipv4_peer_entry>::const_iterator i = resp.peers4.begin();
|
||||
i != resp.peers4.end(); ++i)
|
||||
{
|
||||
tcp::endpoint a(address_v4(i->ip), i->port);
|
||||
need_update |= bool(add_peer(a, peer_info::tracker));
|
||||
}
|
||||
|
||||
#if TORRENT_USE_IPV6
|
||||
for (std::vector<ipv6_peer_entry>::const_iterator i = resp.peers6.begin();
|
||||
i != resp.peers6.end(); ++i)
|
||||
{
|
||||
tcp::endpoint a(address_v6(i->ip), i->port);
|
||||
need_update |= bool(add_peer(a, peer_info::tracker));
|
||||
}
|
||||
#endif
|
||||
if (need_update) state_updated();
|
||||
|
||||
update_want_peers();
|
||||
|
||||
if (m_ses.alerts().should_post<tracker_reply_alert>())
|
||||
{
|
||||
m_ses.alerts().post_alert(tracker_reply_alert(
|
||||
get_handle(), peer_list.size(), r.url));
|
||||
get_handle(), resp.peers.size() + resp.peers4.size()
|
||||
#if TORRENT_USE_IPV6
|
||||
+ resp.peers6.size()
|
||||
#endif
|
||||
, r.url));
|
||||
}
|
||||
m_got_tracker_response = true;
|
||||
|
||||
|
|
|
@ -522,10 +522,13 @@ namespace libtorrent
|
|||
|
||||
buf += 8; // skip header
|
||||
restart_read_timeout();
|
||||
int interval = detail::read_int32(buf);
|
||||
int min_interval = 60;
|
||||
int incomplete = detail::read_int32(buf);
|
||||
int complete = detail::read_int32(buf);
|
||||
|
||||
tracker_response resp;
|
||||
|
||||
resp.interval = detail::read_int32(buf);
|
||||
resp.min_interval = 60;
|
||||
resp.incomplete = detail::read_int32(buf);
|
||||
resp.complete = detail::read_int32(buf);
|
||||
int num_peers = (size - 20) / 6;
|
||||
if ((size - 20) % 6 != 0)
|
||||
{
|
||||
|
@ -549,22 +552,14 @@ namespace libtorrent
|
|||
}
|
||||
|
||||
std::vector<peer_entry> peer_list;
|
||||
resp.peers4.reserve(num_peers);
|
||||
for (int i = 0; i < num_peers; ++i)
|
||||
{
|
||||
// TODO: it would be more efficient to not use a string here.
|
||||
// however, the problem is that some trackers will respond
|
||||
// with actual strings. For example i2p trackers
|
||||
peer_entry e;
|
||||
char ip_string[100];
|
||||
unsigned int a = detail::read_uint8(buf);
|
||||
unsigned int b = detail::read_uint8(buf);
|
||||
unsigned int c = detail::read_uint8(buf);
|
||||
unsigned int d = detail::read_uint8(buf);
|
||||
snprintf(ip_string, 100, "%u.%u.%u.%u", a, b, c, d);
|
||||
e.ip = ip_string;
|
||||
ipv4_peer_entry e;
|
||||
memcpy(&e.ip[0], buf, 4);
|
||||
buf += 4;
|
||||
e.port = detail::read_uint16(buf);
|
||||
e.pid.clear();
|
||||
peer_list.push_back(e);
|
||||
resp.peers4.push_back(e);
|
||||
}
|
||||
|
||||
std::list<address> ip_list;
|
||||
|
@ -575,7 +570,7 @@ namespace libtorrent
|
|||
}
|
||||
|
||||
cb->tracker_response(tracker_req(), m_target.address(), ip_list
|
||||
, peer_list, interval, min_interval, complete, incomplete, 0, address(), "" /*trackerid*/);
|
||||
, resp);
|
||||
|
||||
close();
|
||||
return true;
|
||||
|
|
Loading…
Reference in New Issue