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_BT_CONSTANTS_H 36 #define D_BT_CONSTANTS_H 37 38 #include "common.h" 39 #include "a2functional.h" 40 41 namespace aria2 { 42 43 constexpr size_t INFO_HASH_LENGTH = 20; 44 45 constexpr size_t PIECE_HASH_LENGTH = 20; 46 47 constexpr size_t PEER_ID_LENGTH = 20; 48 49 constexpr size_t MAX_BLOCK_LENGTH = 64_k; 50 51 constexpr size_t DEFAULT_MAX_OUTSTANDING_REQUEST = 6; 52 53 // Upper Bound of the number of outstanding request 54 constexpr size_t UB_MAX_OUTSTANDING_REQUEST = 256; 55 56 constexpr size_t METADATA_PIECE_SIZE = 16_k; 57 58 constexpr const char LPD_MULTICAST_ADDR[] = "239.192.152.143"; 59 60 constexpr uint16_t LPD_MULTICAST_PORT = 6771; 61 62 constexpr size_t COMPACT_LEN_IPV4 = 6; 63 64 constexpr size_t COMPACT_LEN_IPV6 = 18; 65 66 } // namespace aria2 67 68 #endif // D_BT_CONSTANTS_H 69