{"id":5212,"date":"2021-05-08T13:43:42","date_gmt":"2021-05-08T05:43:42","guid":{"rendered":"https:\/\/damogame.cn\/wordpress\/?p=5212"},"modified":"2021-05-08T13:43:42","modified_gmt":"2021-05-08T05:43:42","slug":"p2p%e4%b8%addht%e7%bd%91%e7%bb%9c%e4%bb%8b%e7%bb%8d","status":"publish","type":"post","link":"https:\/\/i007.cc\/wordpress\/archives\/5212","title":{"rendered":"P2P\u4e2dDHT\u7f51\u7edc\u4ecb\u7ecd"},"content":{"rendered":"<p id=\"titiletext\"><a href=\"http:\/\/www.360doc.com\/content\/18\/0708\/11\/3175779_768736845.shtml\">\u539f\u6587\u5730\u5740<\/a><\/p>\n<p>&nbsp;<\/p>\n<div class=\"article_data\">\n<div id=\"resavelayer1\" class=\"bdsharebuttonbox article_data_right\">\n<div id=\"zcommondID\" class=\"zcommond\"><\/div>\n<\/div>\n<\/div>\n<div id=\"articlecontent\" class=\"article_container\">\n<table>\n<tbody>\n<tr>\n<td 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o-hash\u66f4\u8fd1\u7684k\u4e2a\u8282\u70b9\u4fe1\u606f\uff08\u540cfind_node\u8fc7\u7a0b\uff09\u3002<\/p>\n<p>\u4e0a\u9762\u53ea\u662f\u6700\u57fa\u672c\u7684\u64cd\u4f5c\uff0c\u4e00\u6b21nodes\u6216\u8005info-hash\u7684\u67e5\u627elookup\u8fc7\u7a0b\u5219\u9700\u8981\u8282\u70b9\u8fdb\u884c\u82e5\u5e72\u6b21\u4e0a\u9762\u7684find\u64cd\u4f5c\u7684\uff0c\u4e00\u4e2a\u9012\u5f52\u67e5\u627e\u7684\u8fc7\u7a0b\u3002\u5229\u7528\u4e0a\u9762\u7684\u64cd\u4f5c\u66f4\u7cbe\u786e\u7684\u63cf\u8ff0\u4e00\u6b21\u4e00\u4e2a\u8282\u70b9x\u8981\u67e5\u627eID\u503c\u4e3at\u00a0\u7684\u8282\u70b9\uff0c\u00a0\u8fc7\u7a0b\u5982\u4e0b\uff1a<\/p>\n<p>1\u3001\u00a0\u8ba1\u7b97\u5230t\u00a0\u7684\u8ddd\u79bb\uff1ad(x,y)\u00a0=\u00a0x\u2295y<\/p>\n<p>2\u3001\u00a0\u4ecex\u00a0\u7684\u7b2c[\u33d2\u00a0d]\u4e2aK\u00a0\u6876\u4e2d\u53d6\u51fa\u03b1\u00a0\u4e2a\u8282\u70b9\u7684\u4fe1\u606f\uff08\u5404\u4e2a\u5b9e\u73b0\u03b1\u503c\u4e0d\u4e00\u6837\uff0c\u6709\u4e9b\u662f3\u6709\u4e9b\u5219\u7b49\u4e8ek\u503c\uff09\uff0c\u540c\u65f6\u8fdb\u884cFIND_NODE\u00a0\u64cd\u4f5c\u3002\u5982\u679c\u8fd9\u4e2aK\u00a0\u6876\u4e2d\u7684\u4fe1\u606f\u5c11\u4e8e\u03b1\u00a0\u4e2a\uff0c\u5219\u4ece\u9644\u8fd1\u591a\u4e2a\u6876\u4e2d\u9009\u62e9\u8ddd\u79bb\u6700<\/p>\n<p>\u63a5\u8fd1d\u00a0\u7684\u603b\u5171\u03b1\u4e2a\u8282\u70b9\u3002<\/p>\n<p>3\u3001\u00a0\u5bf9\u63a5\u53d7\u5230\u67e5\u8be2\u64cd\u4f5c\u7684\u6bcf\u4e2a\u8282\u70b9\uff0c\u5982\u679c\u53d1\u73b0\u81ea\u5df1\u5c31\u662ft\uff0c\u5219\u56de\u7b54\u81ea\u5df1\u662f\u6700\u63a5\u8fd1t\u00a0\u7684\u3002\u5426\u5219\u6d4b\u91cf\u81ea\u5df1\u548ct\u00a0\u7684\u8ddd\u79bb\uff0c\u5e76\u4ece\u81ea\u5df1\u5bf9\u5e94\u7684K\u00a0\u6876\u4e2d\u9009\u62e9\u03b1\u00a0\u4e2a\u8282\u70b9\u7684\u4fe1\u606f\u7ed9x\u3002<\/p>\n<p>4\u3001\u00a0X\u00a0\u5bf9\u65b0\u63a5\u53d7\u5230\u7684\u6bcf\u4e2a\u8282\u70b9\u90fd\u518d\u6b21\u6267\u884cFIND_NODE\u00a0\u64cd\u4f5c\uff0c\u6b64\u8fc7\u7a0b\u4e0d\u65ad\u91cd\u590d\u6267\u884c\uff0c\u76f4\u5230<\/p>\n<p>\u6bcf\u4e00\u4e2a\u5206\u652f\u90fd\u6709\u8282\u70b9\u54cd\u5e94\u81ea\u5df1\u662f\u6700\u63a5\u8fd1t\u00a0\u7684\uff0c\u6216\u8005\u8bf4FIND_NODE\u64cd\u4f5c\u8fd4\u56de\u7684\u8282\u70b9\u503c\u6ca1\u6709\u90fd\u5df2\u7ecf\u88ab\u67e5\u627e\u8fc7\u4e86\uff0c\u5373\u627e\u4e0d\u5230\u66f4\u8fd1\u7684\u8282\u70b9\u4e86\u3002<\/p>\n<p>5\u3001\u00a0\u901a\u8fc7\u4e0a\u8ff0\u67e5\u627e\u64cd\u4f5c\uff0cx\u00a0\u5f97\u5230\u4e86k\u00a0\u4e2a\u6700\u63a5\u8fd1t\u00a0\u7684\u8282\u70b9\u4fe1\u606f\u3002<\/p>\n<p>\u6ce8\u610f\uff1a\u8fd9\u91cc\u7528\u201c\u6700\u63a5\u8fd1\u201d\u8fd9\u4e2a\u8bf4\u6cd5\uff0c\u662f\u56e0\u4e3aID\u00a0\u503c\u4e3at\u00a0\u7684\u8282\u70b9\u4e0d\u4e00\u5b9a\u5b58\u5728\u7f51\u7edc\u4e2d\uff0c\u4e5f\u5c31\u662f\u8bf4t\u00a0\u6ca1\u6709\u5206\u914d\u7ed9\u4efb\u4f55\u4e00\u53f0\u7535\u8111\u3002<\/p>\n<p>\u67e5\u627epeers-list\u7684\u8fc7\u7a0b\u5219\u6362\u6210find_value\u52a8\u4f5c\uff0c\u4f46\u6ce8\u610f\u524d\u6587\u63d0\u5230\u7684\u533a\u522b\u5373\u53ef\u4ee5\u6709\u7c7b\u4f3c\u7684\u63cf\u8ff0\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>\u4e0a\u9762\u7684\u56db\u4e2a\u539f\u59cb\u5728BT-DHT\u7684\u5b9e\u73b0\u4e0a\u5219\u8fdb\u884c\u4e86\u91cd\u547d\u540d\uff0c\u5b9a\u4e49\u4e86\u5982\u4e0b\u56db\u7c7b\u4fe1\u606f\uff0c\u5b83\u4eec\u53eb\u4f5cKRPC\uff08K\u4ee3\u8868Khashmila\/Kademlia\uff09\uff0c\u901a\u8fc7udp\u8fdb\u884c\u53d1\u9001\uff0c\u4e00\u4e2a\u8bf7\u6c42\u4e00\u4e2a\u54cd\u5e94\u6216\u8005\u9519\u8bef\u3002<\/p>\n<p>\uff081\uff09\u00a0Ping\uff08\u548cKademlia\u540c\u540d\u540c\u529f\u80fd\uff09<\/p>\n<p><a target=\"_blank\" name=\"OLE_LINK2\" rel=\"noopener\"><\/a>Beconded\uff08\u4ee5BitSprits\u4e3a\u4f8b\uff09:<\/p>\n<p>Ping\u00a0Request\u683c\u5f0f\uff1a<\/p>\n<p>d1:ad2:id20:xxxxxxxxxxxxxxxxxxxe1:q4:ping1:t4:tttt1:y1:qe<\/p>\n<p>\u8868\u793a\u7684\u542b\u4e49\uff1a\u6b64\u64cd\u4f5c\u4e3aping\u64cd\u4f5c\u8bf7\u6c42\uff0c\u53c2\u6570\u4e3a\u53d1\u9001\u8005\u7684id\u662f\uff1axxxxxxxxxxxxxxxxxx<\/p>\n<p>Ping\u00a0Reponse\u683c\u5f0f:<\/p>\n<p>d1:rd2:id20:yyyyyyyyyyyyyyyyyy\u00a0e1:t4:1:y1:re<\/p>\n<p>\u8fd4\u56de\u7684\u6570\u636e\u4e2d\u53ea\u5305\u62ec\u6709\u4e00\u4e2a\u54cd\u5e94\u8005\u7684id\u4fe1\u606f\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>\uff082\uff09\u00a0find_node<a target=\"_blank\" name=\"OLE_LINK4\" rel=\"noopener\"><\/a>\uff08\u548cKademlia\u540c\u540d\u540c\u529f\u80fd\uff09<\/p>\n<p>Beconded\uff08\u4ee5BitSprits\u4e3a\u4f8b\uff09:<\/p>\n<p>find_node\u00a0Request\u683c\u5f0f\uff1a<\/p>\n<p>d1:ad2:id20:xxxxxxxxxxxxxxxxxxxx6:target20:yyyyyyyyyyyyyyyyyyyy1:q9:find_node1:t4:1:y1:qe<\/p>\n<p>\u8868\u793a\u7684\u542b\u4e49\uff1a\u6b64\u64cd\u4f5c\u4e3afind_node\u8bf7\u6c42\uff0c\u53c2\u6570\u4e3a\u53d1\u9001\u8005id\u53ca\u76ee\u6807\u8282\u70b9\u7684id<\/p>\n<p>find_node\u00a0Reponse\u683c\u5f0f\uff1a<\/p>\n<p>d1:rd2:id20:xxxxxxxxxxxxxxxxxxxx5:nodes208:nnnnnnnnnnnnn5:token20:ooooooooooooo1:t4:ttt\u00a01:y1:re<\/p>\n<p>\u8868\u793a\u7684\u542b\u4e49\u662f\uff1a\u627e\u5230\u4e868\u4e2a\u6700\u8fd1\u7684\u8282\u70b9\uff0cnodes208\u8868\u793a8\u4e2anode\u4fe1\u606f\uff08ip,port,id\uff09\u5171208Bytes<\/p>\n<p>&nbsp;<\/p>\n<p>\uff083\uff09\u00a0get_peers\uff08\u5bf9\u5e94Kademlia\u4e2d\u7684find_value\u6d88\u606f\uff09<\/p>\n<p>Beconded\uff08\u4ee5BitSprits\u4e3a\u4f8b\uff09:<\/p>\n<p>Get_peers\u8bf7\u6c42\u683c\u5f0f\uff1a<\/p>\n<p>d1:ad2:id20:xxxxxxxxxxxxxxxxxxxx9:info_hash20:zzzzzzzzzzzzzzzzzzzze1:q9:get_peers1:t4:tttt1:y1:qe<\/p>\n<p>\u8868\u793a\u7684\u542b\u4e49\uff1a\u6b64\u64cd\u4f5c\u4e3aget_peers\u64cd\u4f5c\u8bf7\u6c42\uff0c\u53c2\u6570\u4e3a\uff1a\u53d1\u9001\u8005\u7684id\u548c\u8981\u67e5\u8be2\u79cd\u5b50\u7684info-hash\u3002<\/p>\n<p>Get_peers\u54cd\u5e94\u683c\u5f0f\u6709\u4e24\u79cd\uff0c\u4e00\u79cd\u662f\u627e\u5230\u4e86\u8282\u70b9\u542b\u6709\u8be5info-hash\u7684peers\u5217\u8868\u4fe1\u606f\uff0c\u5982\u4e0b\u683c\u5f0f\uff1a<\/p>\n<p>\u8868\u793a\u7684\u542b\u4e49\uff1a<\/p>\n<p>d1:rd2:id20:xxxxxxxxxxxxxxxxxxx5:token20:ooooooooooooooooooo6:valuesl6:(ip1,port1)+(ip2,port2)+(ipi,porti)\u2026e1:t4:tttt1:y1:re<\/p>\n<p>(values\u540e\u9762\u8ddf\u4e0a\u7684\u5219\u662fpeers\u5217\u8868\uff0cip,\u00a0port)<\/p>\n<p>&nbsp;<\/p>\n<p>\u53e6\u4e00\u79cd\u662f\u6ca1\u6709\u627e\u5230\u5217\u8868\u4fe1\u606f\uff0c\u5982\u4e0b\u683c\u5f0f\uff1a<\/p>\n<p>d1:rd2:id20:xxxxxxxxxxxxxxxx5:nodes208:nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn\u00a05:token20:ooooooooooooooo1:t4:tttt1:y1:re<\/p>\n<p>\u8868\u793a\u7684\u542b\u4e49\u4e3a\uff1a<\/p>\n<p>\u6ca1\u6709\u627e\u5230\u5b58\u6709info-hash\u7684\u8282\u70b9\uff0c\u4f46\u627e\u5230\u4e86\u79bb\u8be5info-hash\u66f4\u8fd1\u76848\u4e2a\u8282\u70b9\uff0cnodes208\u8868\u793a8\u4e2anode\u4fe1\u606f\uff08ip,port,id\uff09\u5171208bytes<\/p>\n<p>&nbsp;<\/p>\n<p>\uff084\uff09\u00a0announce_peer\uff08\u5bf9\u5e94Kademlia\u4e2d\u7684store\u6d88\u606f\uff09<\/p>\n<p>Beconded\uff08\u4ee5BitSprits\u4e3a\u4f8b\uff09:<\/p>\n<p>announce\u00a0_peers\u8bf7\u6c42\u683c\u5f0f\uff1a<\/p>\n<p>d1:ad2:id20:xxxxxxxxxxxxxxxxx9:info_hash20:zzzzzzzzzzzzzzzzzz4:porti10756e5:token20:ooooooooooooooooo1:q13:announce_peer1:t4:tttt1:y1:qe<\/p>\n<p>\u8868\u793a\u7684\u542b\u4e49\u662f\uff1a\u6b64\u64cd\u4f5c\u4e3aannounce_peer\u8bf7\u6c42\u64cd\u4f5c\uff0c\u544a\u8bc9\u5bf9\u7aef\u6211\u8fd9\u8fb9\u5bf9info-hash\u6587\u4ef6\u4e0a\u4f20\u548c\u4e0b\u8f7d\uff0c\u53ef\u4ee5\u6210\u4e3apeers\u00a0list\u4e2d\u7684\u4e00\u5458\uff0c\u7aef\u53e3\u53f7\u662f10756.<\/p>\n<p>Announce_peer\u00a0Reponse\u683c\u5f0f<\/p>\n<p>d1:rd2:id20:xxxxxxxxxxxxxxxxxxxx2:ip4:pppp1:t4:tttt1:v4:UTb*1:y1:re<\/p>\n<p>&nbsp;<\/p>\n<p>\u9644\u4ef6\u4e3a\u6293\u53d6\u7684\u5206\u522b\u4e3a\u4e3a\u4e00\u7b80\u5355\u4e0b\u8f7d\u8fc7\u7a0b\/\u4e00\u521d\u59cb\u521d\u59cb\u5316\u8def\u7531\u8868\u7684\u6570\u636e\u5305\uff1a\u53ef\u4ee5\u5bf9\u7167\u8fdb\u884c\u5206\u6790<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p><strong>\u56db\u3001Bttorent\u00a0DHT\u5b9e\u73b0\u51e0\u4e2a\u91cd\u8981\u8fc7\u7a0b<\/strong><\/p>\n<p>\u79cd\u5b50\u5236\u4f5c\uff1a<\/p>\n<p>1\uff09.\/maketorrent-console\u53c2\u6570use_tracker\u8bbe\u7f6e\u4e3afalse\uff0c\u5219\u4e0d\u4f1a\u4ea7\u751fannounce\u00a0tracker\u5b57\u6bb5<\/p>\n<p>2\uff09\u00a0\u8bfb\u53d6\u672c\u5730\u201c\u8def\u7531\u8868\u201d\u6587\u4ef6\uff0c\u5e76\u4ece\u4e2d\u627e\u51fak\u4e2a\u79bbinfo-hash\u6700\u8fd1\u7684\u8282\u70b9\uff0c\u4f5c\u4e3anodes\u5b57\u6bb5<\/p>\n<p>&nbsp;<\/p>\n<p>\u542f\u52a8\u8fc7\u7a0b\uff1a<\/p>\n<p>1\uff09\u00a0\u4ecerouting_table\u6587\u4ef6\u4e2d\u88c5\u8f7d\u4e4b\u524d\u4fdd\u5b58\u7684\u201d\u8def\u7531\u8868\u201dK\u6876\u4fe1\u606f\uff0c\u521d\u59cb\u5316\u5185\u5b58\u201c\u8def\u7531\u8868\u201d\u4fe1\u606f<\/p>\n<p>2\uff09\u00a0\u5f3a\u5236\u5237\u65b0\u201c\u8def\u7531\u8868\u201c\u4e2d\u7684\u6bcf\u4e00\u4e2aK\u6876\uff0c\u5237\u65b0\u8fc7\u7a0b\u662f\u968f\u673a\u4ea7\u751f\u4e00id\u8fdb\u884cfindNode\u67e5\u627e\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>\u5237\u65b0\u8def\u7531\u8868\u7684\u8fc7\u7a0b\uff1a<\/p>\n<p>1\uff09\u00a0\u542f\u52a8\u7684\u65f6\u5019\u8fdb\u884c\u5f3a\u5236\u5237\u65b0<\/p>\n<p>2\uff09\u00a0\u6bcf15\u5206\u949f\u5982\u679cK\u6876\u4e2d\u7684\u4fe1\u606f\u6ca1\u6709\u8fdb\u884c\u66f4\u65b0\u7684\u8bdd\uff0c\u5219\u8fdb\u884c\u5237\u65b0\u4e00\u6b21K\u6876\uff0c\u5373refreshTable<\/p>\n<p>3\uff09\u00a0\u6bcf5\u5206\u949f\u8fdb\u884c\u4e00\u6b21checkpoint\u64cd\u4f5c\uff0c\u4ee5\u628a\u5f53\u524d\u7684\u8def\u7531\u8868\u5b58\u653e\u5230routing_table\u6587\u4ef6\u4e2d<\/p>\n<p>routing_table\u6587\u4ef6\u7684\u683c\u5f0f\uff1a<\/p>\n<p>{&#8216;id&#8217;:node.id,\u00a0&#8216;host&#8217;:node.host,\u00a0&#8216;port&#8217;:node.port,\u00a0&#8216;age&#8217;:int(node.age)}<\/p>\n<p>\u6709\u4e9b\u5b9e\u73b0\u662f\u7528SQLite\u6570\u636e\u5e93\u6765\u5b9e\u73b0\u8fd9\u90e8\u5206\u529f\u80fd\u7684\u3002<\/p>\n<p>\u6bcf\u4e00\u4e2a\u201c\u8def\u7531\u8868\u201d\u7684K\u6876\u90fd\u6709\u4e00\u4e2a\u201c\u6700\u8fd1\u66f4\u65b0\u65f6\u95f4\u201c\u5c5e\u6027\uff0c\u5f53\u6536\u5230\u8be5\u6876\u4e2d\u4efb\u4f55\u8282\u70b9\u7684ping\u54cd\u5e94\uff0c\u6216\u8005\u6709\u4efb\u4f55\u8282\u70b9\u88ab\u52a0\u5165\u6216\u8005\u88ab\u66ff\u6362\uff0c\u5219\u8be5\u5c5e\u6027\u90fd\u9700\u4fdd\u6301\u66f4\u65b0\uff0c\u5e76\u4e14\u91cd\u542f\u4e00\u4e2a15\u5206\u949f\u7684\u5b9a\u65f6\u5668\uff0c\u5982\u679c\u5b9a\u65f6\u5668\u8d85\u65f6\uff0815\u5206\u949f\u5185\u8be5K\u6876\u8282\u70b9\u6ca1\u6709\u4efb\u4f55\u66f4\u65b0\u64cd\u4f5c\uff09\uff0c\u5219\u4f1a\u5bf9\u8be5K\u6876\u8fdb\u884c\u4e00\u6b21refresh\u64cd\u4f5c\uff0c\u64cd\u4f5c\u7684\u8fc7\u7a0b\u662f\u4ece\u8be5K\u6876\u8303\u56f4\u9009\u51fa\u4e00\u968f\u673a\u7684ID\uff0c\u7136\u540e\u5bf9\u8be5ID\u8fdb\u884cfind_node\u64cd\u4f5c\u3002\u201c\u8def\u7531\u8868\u201d\u4e2d\u7684\u8282\u70b9\u9700\u8981\u4fdd\u6301live\u72b6\u6001\uff0c\u5373\u5f97\u4fdd\u8bc1\u6ca1\u6709\u79bb\u7ebf\uff0c\u5982\u679c\u5411\u8def\u7531\u8868\u4e2d\u7684\u4e00\u8282\u70b9\u53d1\u51fa\u7684\u8fde\u7eed3\u6b21\u8bf7\u6c42\u90fd\u6ca1\u6709\u6536\u5230\u54cd\u5e94\uff0c\u5219\u8ba4\u4e3a\u8be5\u8282\u70b9\u5931\u6548\u3002<\/p>\n<p>refreshTable\uff08force=1\uff09\u8fc7\u7a0b\uff1a<\/p>\n<p>\uff081\uff09\u00a0\u5982\u679cforce=1\uff0c\u5219\u5bf9\u5f53\u524d\u6bcf\u4e2aK\u6876\u90fd\u8fdb\u884c\u5237\u65b0<\/p>\n<p>\uff082\uff09\u00a0\u5982\u679cK\u6876\u5f53\u524dnodes\u6570\u5c0f\u4e8ek\uff088\uff09\uff0c\u5219\u4e5f\u8fdb\u884c\u5237\u65b0<\/p>\n<p>\uff083\uff09\u00a0\u5982\u679cK\u6876\u4e2d\u5b58\u5728\u65e0\u6548\u7684\u8282\u70b9\uff0c\u5373\u8fde\u7eed\u4e09\u4e2a\u6d88\u606f\u6ca1\u6709\u6536\u5230\u54cd\u5e94\u7684\u8282\u70b9<\/p>\n<p>\uff084\uff09\u00a0\u5982\u679cK\u6876\u4e2d\u6240\u6709\u8282\u70b9\u6ca1\u6709\u4ea4\u4e92\u7684\u65f6\u95f4\u8d85\u8fc715\u5206\u949f\uff0c\u5219\u4e5f\u8fdb\u884c\u5237\u65b0<\/p>\n<p>&nbsp;<\/p>\n<p>\u5f53\u4e00\u4e2a\u8282\u70b9\u6536\u5230\u4efb\u4f55\u4e00\u4e2aRPC\u6d88\u606f\uff08\u8bf7\u6c42\u548c\u54cd\u5e94\uff09\u540e\uff08ping\/find\/getPeers\/announce_peer\uff09\u90fd\u4f1a\u53bb\u68c0\u67e5\u4e00\u4e0b\u8be5\u6d88\u606f\u7684\u53d1\u9001\u8005\u662f\u5426\u5728\u672c\u5730\u7684\u201c\u8def\u7531\u8868\u201c\u4e2d\uff0c\u5982\u679c\u8be5\u53d1\u9001\u8005\u5df2\u7ecf\u5b58\u5728\u8282\u70b9\u7684\u672c\u5730\u201c\u8def\u7531\u8868\u201d\u4e2d\uff0c\u5219\u4f1a\u628a\u8be5\u53d1\u9001\u8005\u4ece\u5176\u5bf9\u5e94\u7684K\u6876\u79fb\u52a8\u5230\u8be5K\u6876\u7684\u672b\u5c3e\u3002\u5982\u679c\u8be5\u53d1\u9001\u8005\u4e0d\u5728\u8282\u70b9\u7684\u201c\u8def\u7531\u8868\u201d\u4e2d\u5219\u4f1a\u53bb\u5c1d\u8bd5\u63d2\u5165\u5230\u672c\u5730\u201d\u8def\u7531\u8868\u201cK\u6876\u4e2d\uff0c\u8fd9\u4e5f\u662f\u201c\u8def\u7531\u8868\u201d\u7684\u52a8\u6001\u5efa\u7acb\u8fc7\u7a0b\u7684\u4e00\u79cd\uff0c\u8fc7\u7a0b\u5982\u4e0b\uff1a<\/p>\n<p>\uff080\uff09\u00a0\u00a0\u627e\u5230\u8be5\u53d1\u9001\u8005\u7684\u5bf9\u5e94\u7684K\u6876<\/p>\n<p>\uff081\uff09\u00a0\u5982\u679c\u8be5\u8282\u70b9\u662f\u54cd\u5e94\u6d88\u606f\u4e2d\u53d1\u73b0\u7684\uff0c\u5219\u66f4\u65b0\u8be5\u8282\u70b9lastSeen\u00a0=\u00a0time()\u65f6\u95f4<\/p>\n<p>\uff082\uff09\u00a0\u5982\u679c\u8be5K\u6876\u5927\u5c0f\u5c0f\u4e8ek\uff088\uff09\u5219\u76f4\u63a5\u63d2\u5230\u8be5K\u6876\u540e\u9762<\/p>\n<p>\uff083\uff09\u00a0\u5982\u679c\u8be5K\u6876\u5df2\u7ecf\u6ee1\u4e86\uff0c\u5219\u68c0\u67e5\u662f\u5426\u6709\u65e0\u6548\u7684\u8282\u70b9\uff0c\u5982\u679c\u6709\u5219\u628a\u8fd9\u4e9b\u65e0\u6548\u8282\u70b9\u5220\u9664\uff0c\u5e76\u628a\u8be5\u8282\u70b9\u653e\u5165K\u6876\u672b\u5c3e\u3002\uff08\u4f46\u540e\u9762\u4f1a\u5bf9\u8fd9\u4e9b\u65e9\u5df2\u7ecf\u5b58\u5728\u7684\u8282\u70b9\u8fdb\u884c\u518d\u4e00\u6b21\u7684ping\u64cd\u4f5c\uff0c\u6765\u8fdb\u4e00\u6b65\u786e\u5b9a\u662f\u5426\u65e0\u6548\u4e86\uff0c\u5982\u679c\u6536\u5230\u54cd\u5e94\uff0c\u5219\u628a\u8fd9\u4e9b\u8282\u70b9\u91cd\u65b0\u653e\u5982K\u6876\uff09<\/p>\n<p>\uff084\uff09\u00a0\u5982\u679c\u8be5K\u6876\u5df2\u7ecf\u6ee1\u4e86\uff0c\u5e76\u4e14\u6240\u6709\u7684\u8282\u70b9\u90fd\u662f\u6709\u6548\u7684\uff0c\u5219\u9700\u8981\u67e5\u770b\u81ea\u8eab\uff08\u672c\u5ba2\u6237\u77ed\uff09\u662f\u5426\u5728\u8be5K\u6876\u4e2d\uff08\u5373\u8be5K\u6876\u662f\u5426\u662f\u81ea\u5df1\u6240\u5728\u7684K\u6876\uff09\uff0c\u5982\u679c\u4e0d\u662f\u5219\u76f4\u63a5\u4e22\u5f03\u8be5\u8282\u70b9<\/p>\n<p>\uff085\uff09\u00a0\u5982\u679c\u8be5K\u6876\u4e0d\u662f\u81ea\u8eab\u6240\u5728\u7684K\u6876\uff0c\u5219\u9700\u8981\u8fdb\u884cK\u6876\u5206\u62c6\u3002\u62c6\u5206\u7684\u65b9\u6cd5\u5373\u662f\u4e00\u4e2a\u53d8\u4e3a\u4e24\u4e2a\u7b49\u957fK\u6876\uff0c\u4e00\u4e2a\u5305\u62ec\u81ea\u8eab\uff0c\u4e00\u4e2a\u4e0d\u5305\u62ec\u3002<\/p>\n<p>\uff086\uff09\u00a0\u5bf9\u8be5\u8282\u70b9\u6dfb\u52a0\u5230\u5206\u62c6\u540e\u7684\u4e00\u4e2aK\u6876\u4e2d\u53bb\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>findNodes(id,\u00a0invalid=True)\u7684\u8fc7\u7a0b\u662f\uff1a\/\/\u8be5\u8fc7\u7a0b\u662f\u5185\u90e8\u8fc7\u7a0b\uff0c\u7ed9\u4e0b\u9762findNode(<\/p>\n<p>\uff080\uff09\u00a0\u5982\u679c\u8be5\u8282\u70b9\u5728\u81ea\u5df1\u7684K\u6876\u4e2d\uff0c\u5219\u76f4\u63a5\u8fd4\u56de\uff0c\u7ed3\u675f\u8be5\u8fc7\u7a0b<\/p>\n<p>\uff081\uff09\u00a0\u5982\u679cinvalid=True\uff0c\u5219\u9700\u8981\u6392\u9664\u5f53\u524d\u65e0\u6548\u7684\u8282\u70b9<\/p>\n<p>\uff082\uff09\u00a0\u5982\u679c\u4e0a\u9762\u9009\u53d6\u8be5K\u6876\u4e2d\u7684\u6240\u6709\u8282\u70b9\u5c0f\u4e8eK(8)\uff0c\u5219\u9700\u8981\u4ece\u5176\u4ed6\u6876\u4e2d\u8865\u5145\uff0c\u5982\u4e0b<\/p>\n<p>\uff083\uff09\u00a0\u628a\u5de6\u53f3\u76f8\u90bb\u7684\u4e24\u4e2aK\u6876\u4e2d\u7684\u8282\u70b9\u8865\u5145\u8fdb\u53bb\uff0c\u7136\u540e\u628a\u6240\u6709\u8fd9\u4e9b\u8282\u70b9\u6309\u7167\u79bbid\u8ddd\u79bb\u8fdc\u8fd1\u8fdb\u884c\u6392\u5e8f\uff0c\u9009\u53d6\u6700\u8fd1\u7684K(8)\u4e2a\u8282\u70b9<\/p>\n<p>\uff084\uff09\u00a0\u8fd4\u56de\u6700\u540e\u5f97\u5230\u7684\u6700\u8fd1\u7684K\u4e2a\u8282\u70b9\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>findNode(id)\u7684\u8fc7\u7a0b\u662f\uff1a<\/p>\n<p>\uff081\uff09\u00a0\u4ece\u81ea\u5df1\u672c\u5730\u7684\u201c\u8def\u7531\u8868\u201c\u53d6\u79bbid\u6700\u8fd1\u7684K\u6876\uff0c\u8fd4\u56dek(8)\u4e2anodes\u4fe1\u606f<\/p>\n<p>\uff082\uff09\u00a0\u4ece\u4e0a\u9762k\u4e2a\u4fe1\u606f\u4e2d\u9009\u53d6a\u4e2a\uff083\uff09\u4e2a\uff0c\u7136\u540e\u53d1\u9001findNode\u6d88\u606f\u7ed9\u8fd93\u4e2a\u8282\u70b9<\/p>\n<p>\uff083\uff09\u00a0\u8be53\u4e2a\u8282\u70b9\u67e5\u627e\u81ea\u5df1\u7684\u201c\u8def\u7531\u8868\u201c\u540c\u65f6\u8fd4\u56dek\u4e2anodes\u4fe1\u606f<\/p>\n<p>\uff084\uff09\u00a0\u4ece\u4e0a\u9762\u5f97\u5230\u76843*k\u4e2a\u8282\u70b9\u5728\u91cd\u590d<\/p>\n<p>&nbsp;<\/p>\n<p>Keyexpired\u8fc7\u7a0b\uff1a<\/p>\n<p>1\uff09\u00a0\u8282\u70b9\u5b58\u653e\u7684\uff08info-hash\uff0cpeers-list\uff09\u5982\u679c24\u5c0f\u65f6\u6ca1\u6709\u6536\u5230\u539f\u8282\u70b9\u7684\u66f4\u65b0\u5219\u89c6\u4f5c\u65e0\u6548<\/p>\n<p>2\uff09\u00a0\u5f53\u524d\u4ecd\u7136\u6d3b\u52a8\u7684peer-lists\u4e2d\u7684\u8282\u70b9\u9700\u898124\u5c0f\u65f6\u5411\u5176close\u8282\u70b9\u8fdb\u884c\u5237\u65b0info-hash\uff0cpeers-list\u3002<\/p>\n<p>3\uff09\u5f53\u524d\u4ecd\u7136\u6d3b\u52a8\u7684peer-lists\u4e2d\u7684\u8282\u70b9\u5982\u679c\u5728\u81ea\u5df1\u7684\u8def\u7531\u8868\u4e2d\u53d1\u73b0\u6709\u79bbinfo-hash\u66f4\u8fd1\u7684\u8282\u70b9\uff0c\u5219\u4f1a\u628a\u81ea\uff08info-hash\uff0cpeers-list\uff09announce\u7ed9\u5b83\u4eec\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>\u5728BT\u7a0b\u5e8f\u4e2d\uff0c\u5bf9\u5916\u53ea\u6709\u4e00\u4e2a\u8fc7\u7a0b\uff0c\u90a3\u5c31\u662f\u4e0b\u9762\u7684getPeersAndAnnounce\u8fc7\u7a0b\uff0c\u8be5\u8fc7\u7a0b\u7684\u4f5c\u7528\u5c31\u662f\u5bf9\u63d0\u4f9b\u7684info-hash\u627e\u5230\u4e00\u4e2apeers\u00a0list\u8868\uff0c\u5e76\u4e14\u628a\u81ea\u5df1\u4f5c\u4e3a\u4e00\u4e2apeer\u544a\u8bc9\u7ed9\u522b\u4eba\uff1a<\/p>\n<p>getPeersAndAnnounce\u8fc7\u7a0b\uff1a<\/p>\n<p>\uff080\uff09\u00a0\u8be5\u8fc7\u7a0b\u5305\u62ec\u4e86getPeers\u548cAnnounce_peer\u4e24\u4e2a\u8fc7\u7a0b<\/p>\n<p>\uff081\uff09\u00a0getPeers\u7684\u8fc7\u7a0b\u9996\u5148\u662f\u5728\u81ea\u5df1\u7684\u672c\u5730\u7684\uff08info-hash,\u00a0peers-list\uff09\u8868\u4e2d\u8fdb\u884c\u67e5\u627e\uff0c\u5982\u679c\u67e5\u627e\u5230\u5219\u76f4\u63a5\u8fdb\u884c\u8fde\u63a5<\/p>\n<p>\uff082\uff09\u00a0\u5982\u679c\u672c\u5730\u6ca1\u6709info-hash\u7684key,values\uff0c\u5219\u9700\u8981\u8fdb\u884c\u8fdc\u7a0b\u67e5\u627e\uff0c\u67e5\u627e\u7684\u8fc7\u7a0b\u662f<\/p>\n<p>\uff083\uff09\u00a0\u5148\u4eceinfo-hash\u5bf9\u5e94\u7684K\u6876\u4e2d\u627ek\u4e2a\u8282\u70b9\uff0c\u7136\u540e\u5206\u522b\u5411\u5b83\u4eec\u53d1\u9001getpeers\u539f\u59cbRPC\u6d88\u606f<\/p>\n<p>\uff084\uff09\u00a0\u5206\u6790\u4e0a\u9762k\u4e2a\u8282\u70b9\u7684\u54cd\u5e94\u4fe1\u606f\uff0c\u5982\u679c\u54cd\u5e94\u4fe1\u606f\u4e2d\u5b58\u5728values\u5b57\u6bb5\uff0c\u5219\u8bf4\u660e\u547d\u4e2d\u4e00\u4e2a\u8282\u70b9\uff0c\u8be5\u8282\u70b9\u4fdd\u5b58\u6709info-hash\u7684peers-list\u4fe1\u606f\uff0c\u4fdd\u5b58\u8d77\u6765\u3002\u5982\u679c\u54cd\u5e94\u6d88\u606f\u4e2d\u53ea\u6709nodes\u5b57\u6bb5\uff0c\u5219\u8be5\u5b57\u6bb5\u540e\u9762\u8ddf\u4e0a\u7684\u662fk\uff088\uff09\u4e2a\u66f4\u63a5\u8fd1\u4e8einfo-hash\u7684\u8282\u70b9\uff0c\u5224\u65ad\u8fd9\u4e9b\u8282\u70b9\u662f\u5426\u53d1\u9001\u8fc7\uff0c\u5982\u679c\u6ca1\u6709\u5219\u628a\u8fd9\u4e9b\u8282\u70b9\u4fdd\u5b58\u8d77\u6765\u7ee7\u7eed\u53d1\u9001getPeers\u00a0RPC\u6d88\u606f\uff0c\u76f4\u5230\u6536\u5230\u54cd\u5e94\u6d88\u606f\u4e2d\u5e26\u6709values\u5b57\u6bb5\uff0c\u6216\u8005\u54cd\u5e94\u6d88\u606f\u4e2d\u6240\u6709\u7684\u8282\u70b9\u90fd\u53d1\u9001\u8fc7\u4e86\uff08\u6ca1\u6709\u66f4\u63a5\u8fd1info-hash\u7684\u8282\u70b9\u4e86\uff09<\/p>\n<p>\uff085\uff09\u00a0\u5f53\u6536\u5230\u8282\u70b9\u5bf9get_peers\u54cd\u5e94\u5305\u4e2d\u5305\u62ec\u6709(info-hash,peers-list)\u540e\uff0c\u5219\u9996\u5148\u5411\u54cd\u5e94\u8005\u53d1\u9001announce\uff0c\u7136\u540e\u5411\u81ea\u5df1K\u6876\u4e2d\u79bbinfo-hash\u6700\u8fd1\u7684k\u4e2a\u8282\u70b9\u53d1\u9001announce_peer\u6d88\u606f<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>Ping\u6d88\u606f\u7684\u53d1\u9001\u8fc7\u7a0b\uff1a<\/p>\n<p>1\uff09\u00a0\u5bf9\u4e8eDHT\u79cd\u5b50\u6587\u4ef6\u4e2dnodes\u9010\u4e2a\u8282\u70b9\u53d1\u9001ping\u6d88\u606f\uff0c\u6709\u54cd\u5e94\u8005\u5219\u6dfb\u52a0\u5230\u201c\u8def\u7531\u8868\u201d\u4e2d\u53bb<\/p>\n<p>2\uff09\u00a0\u5f53\u63d2\u5165\u65b0\u8282\u70b9\u5230\u201c\u8def\u7531\u8868\u201d\u4e2d\u65f6\uff0c\u5982\u679c\u8be5\u201c\u8def\u7531\u8868\u201dK\u6876\u5df2\u6ee1\uff0c\u5219\u4f1a\u9009\u62e9K\u6876\u7684\u5934\u90e8\u8282\u70b9\u8fdb\u884cping\u64cd\u4f5c\uff0c\u5982\u679c\u8be5\u5934\u8282\u70b9\u4ecd\u7136\u5728\u7ebf\uff0c\u5219\u76f4\u63a5\u4e22\u5f03\u8be5\u8282\u70b9\uff08\u8fd9\u662f\u57fa\u4e8e\u4e00\u79cd\u8d8a\u957f\u65f6\u95f4\u5728\u7ebf\u5219\u53ef\u80fd\u4ee5\u540e\u8d8a\u957f\u5728\u7ebf\u7684\u6982\u7387\u7edf\u8ba1\uff09\uff0c\u5426\u5219\u5220\u9664\u5934\u8282\u70b9\uff0c\u5e76\u628a\u65b0\u8282\u70b9\u63d2\u5230K\u6876\u5c3e\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p><strong>\u4e94\u3001\u53c2\u8003\u8d44\u6599\uff1a<\/strong><\/p>\n<p>\uff11\uff09Kademlia-A-P2P-Information-System.pdf<\/p>\n<p>\uff12\uff09<a href=\"http:\/\/www.tribler.org\/trac\/wiki\/Khashmir\" target=\"_blank\" rel=\"nofollow noopener\">http:\/\/www.tribler.org\/trac\/wiki\/Khashmir<\/a><\/p>\n<p>3\uff09<a href=\"http:\/\/www.bittorrent.org\/beps\/bep_0005.html\" target=\"_blank\" rel=\"nofollow noopener\">http:\/\/www.bittorrent.org\/beps\/bep_0005.html<\/a><\/p>\n<p>4\uff09BitTorrent-4.4.0\u4ee3\u7801<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u539f\u6587\u5730\u5740 &nbsp; \u4e00\u3001P2P\u53caDH<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","footnotes":""},"categories":[],"tags":[119],"class_list":["post-5212","post","type-post","status-publish","format-standard","hentry","tag-03-"],"_links":{"self":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts\/5212","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/comments?post=5212"}],"version-history":[{"count":0,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts\/5212\/revisions"}],"wp:attachment":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/media?parent=5212"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/categories?post=5212"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/tags?post=5212"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}