1 /* <!-- copyright */ 2 /* 3 * aria2 - The high speed download utility 4 * 5 * Copyright (C) 2006 Tatsuhiro Tsujikawa 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; either version 2 of the License, or 10 * (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 20 * 21 * In addition, as a special exception, the copyright holders give 22 * permission to link the code of portions of this program with the 23 * OpenSSL library under certain conditions as described in each 24 * individual source file, and distribute linked combinations 25 * including the two. 26 * You must obey the GNU General Public License in all respects 27 * for all of the code used other than OpenSSL. If you modify 28 * file(s) with this exception, you may extend this exception to your 29 * version of the file(s), but you are not obligated to do so. If you 30 * do not wish to do so, delete this exception statement from your 31 * version. If you delete this exception statement from all source 32 * files in the program, then also delete it here. 33 */ 34 /* copyright --> */ 35 #ifndef D_UT_PEX_EXTENSION_MESSAGE_H 36 #define D_UT_PEX_EXTENSION_MESSAGE_H 37 38 #include "ExtensionMessage.h" 39 40 #include <utility> 41 #include <vector> 42 #include <memory> 43 44 #include "a2time.h" 45 #include "a2functional.h" 46 47 namespace aria2 { 48 49 class PeerStorage; 50 class Peer; 51 52 class UTPexExtensionMessage : public ExtensionMessage { 53 private: 54 uint8_t extensionMessageID_; 55 56 std::vector<std::shared_ptr<Peer>> freshPeers_; 57 58 std::vector<std::shared_ptr<Peer>> droppedPeers_; 59 60 PeerStorage* peerStorage_; 61 62 std::chrono::seconds interval_; 63 64 size_t maxFreshPeer_; 65 66 size_t maxDroppedPeer_; 67 68 std::pair<std::pair<std::string, std::string>, 69 std::pair<std::string, std::string>> 70 createCompactPeerListAndFlag(const std::vector<std::shared_ptr<Peer>>& peers); 71 72 public: 73 UTPexExtensionMessage(uint8_t extensionMessageID); 74 75 virtual std::string getPayload() CXX11_OVERRIDE; 76 getExtensionMessageID()77 virtual uint8_t getExtensionMessageID() const CXX11_OVERRIDE 78 { 79 return extensionMessageID_; 80 } 81 getExtensionName()82 virtual const char* getExtensionName() const CXX11_OVERRIDE 83 { 84 return EXTENSION_NAME; 85 } 86 87 static const char EXTENSION_NAME[]; 88 89 virtual std::string toString() const CXX11_OVERRIDE; 90 91 virtual void doReceivedAction() CXX11_OVERRIDE; 92 93 bool addFreshPeer(const std::shared_ptr<Peer>& peer); 94 95 const std::vector<std::shared_ptr<Peer>>& getFreshPeers() const; 96 97 bool freshPeersAreFull() const; 98 99 bool addDroppedPeer(const std::shared_ptr<Peer>& peer); 100 101 const std::vector<std::shared_ptr<Peer>>& getDroppedPeers() const; 102 103 bool droppedPeersAreFull() const; 104 105 void setPeerStorage(PeerStorage* peerStorage); 106 107 static std::unique_ptr<UTPexExtensionMessage> 108 create(const unsigned char* data, size_t len); 109 110 void setMaxFreshPeer(size_t maxFreshPeer); 111 getMaxFreshPeer()112 size_t getMaxFreshPeer() const { return maxFreshPeer_; } 113 114 void setMaxDroppedPeer(size_t maxDroppedPeer); 115 getMaxDroppedPeer()116 size_t getMaxDroppedPeer() const { return maxDroppedPeer_; } 117 118 constexpr static auto DEFAULT_INTERVAL = 1_min; 119 }; 120 121 } // namespace aria2 122 123 #endif // D_UT_PEX_EXTENSION_MESSAGE_H 124