{"id":93570,"date":"2020-09-07T19:42:05","date_gmt":"2020-09-07T17:42:05","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-libtorrent-2-0-s-podderzhkoj-protokola-bittorrent-2"},"modified":"2020-09-07T19:42:05","modified_gmt":"2020-09-07T17:42:05","slug":"vypusk-libtorrent-2-0-s-podderzhkoj-protokola-bittorrent-2","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/vypusk-libtorrent-2-0-s-podderzhkoj-protokola-bittorrent-2","title":{"rendered":"Vyd\u00e1n\u00ed libtorrent 2.0 s podporou protokolu BitTorrent 2","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

P\u0159edstaven\u00ed<\/a><\/noindex> v\u00fdznamn\u00e1 vyd\u00e1n\u00ed knihovny libtorrent 2.0<\/a><\/noindex> (zn\u00e1m\u00e1 tak\u00e9 jako libtorrent-rasterbar), kter\u00e1 nab\u00edz\u00ed implementaci protokolu BitTorrent, efektivn\u00ed z pohledu spot\u0159eby pam\u011bti a z\u00e1t\u011b\u017ee na CPU. Knihovna je vyu\u017e\u00edv\u00e1na<\/a><\/noindex> v takov\u00fdch torrentov\u00fdch klientech, jako jsou Deluge<\/a><\/noindex>, qBittorrent<\/a><\/noindex>, Folx<\/a><\/noindex>, Lince<\/a><\/noindex>, Miro<\/a><\/noindex> a Flush<\/a><\/noindex> (nesm\u00ed se zam\u011b\u0148ovat s jinou knihovnou libtorrent<\/a><\/noindex>, kter\u00e1 se pou\u017e\u00edv\u00e1 v rTorrent). K\u00f3d libtorrent je naps\u00e1n v jazyce C++ a distribuov\u00e1no<\/a><\/noindex> na z\u00e1klad\u011b licence BSD.<\/p>\n

Vyd\u00e1n\u00ed je v\u00fdznamn\u00e9 p\u0159id\u00e1n\u00edm<\/a><\/noindex> podporou protokolu BitTorrent v2<\/a><\/noindex>, ve kter\u00e9m do\u0161lo k opu\u0161t\u011bn\u00ed algoritmu SHA-1, kter\u00fd m\u011bl probl\u00e9my<\/a><\/noindex> s v\u00fdb\u011brem koliz\u00ed ve prosp\u011bch SHA2-256. SHA2-256 se pou\u017e\u00edv\u00e1 jak pro kontrolu integrity blok\u016f dat, tak pro z\u00e1znamy v indexech (info-dictionary), co\u017e naru\u0161uje kompatibilitu s DHT a trackery. Pro magnetick\u00e9 odkazy na torrenty s hashovac\u00edmi hodnotami SHA2-256 byl navr\u017een nov\u00fd prefix \u201eurn:btmh:\u201c (pro SHA-1 a hybridn\u00ed torrenty se pou\u017e\u00edv\u00e1 \u201eurn:btih:\u201c).<\/p>\n

Jeliko\u017e nahrazen\u00ed hashovac\u00ed funkce naru\u0161uje kompatibilitu protokolu (pole s hashem 32 bajt\u016f m\u00edsto 20 bajt\u016f), v\u00fdvoj specifikace BitTorrent v2 byl p\u016fvodn\u011b prov\u00e1d\u011bn bez ohledu na zp\u011btnou kompatibilitu a byly p\u0159ijaty dal\u0161\u00ed podstatn\u00e9 zm\u011bny, jako nap\u0159\u00edklad pou\u017eit\u00ed Merkleho hash stromu v indexech pro zmen\u0161en\u00ed velikosti torrentov\u00fdch soubor\u016f a kontrolu st\u00e1hnut\u00fdch dat na \u00farovni blok\u016f.<\/p>\n

Mezi zm\u011bnami v BitTorrent v2 se tak\u00e9 vyzdvihuje p\u0159echod k p\u0159i\u0159azen\u00ed jednotliv\u00fdch hash strom\u016f k ka\u017ed\u00e9mu souboru a aplikace vyrovn\u00e1v\u00e1n\u00ed soubor\u016f po \u010d\u00e1stech (bez p\u0159id\u00e1n\u00ed p\u0159\u00eddavn\u00e9ho vypln\u011bn\u00ed po ka\u017ed\u00e9m souboru), co\u017e umo\u017e\u0148uje zbavit se duplicitn\u00edch dat p\u0159i existenci stejn\u00fdch soubor\u016f a usnad\u0148uje identifikaci r\u016fzn\u00fdch zdroj\u016f pro soubory. Zv\u00fd\u0161ila se \u00fa\u010dinnost k\u00f3dov\u00e1n\u00ed struktury adres\u00e1\u0159\u016f v torrentech a byly p\u0159id\u00e1ny optimalizace pro zpracov\u00e1n\u00ed velk\u00e9ho po\u010dtu drobn\u00fdch soubor\u016f. <\/p>\n

Pro vyhlazen\u00ed koexistence BitTorrent v1 a BitTorrent v2 byla realizov\u00e1na mo\u017enost vytv\u00e1\u0159en\u00ed hybridn\u00edch torrentov\u00fdch soubor\u016f, kter\u00e9 zahrnuj\u00ed krom\u011b struktur s hashi SHA-1 i indexy s SHA2-256.
\nUveden\u00e9 hybridn\u00ed torrenty mohou b\u00fdt pou\u017e\u00edv\u00e1ny s klienty, kte\u0159\u00ed podporuj\u00ed pouze protokol BitTorrent v1. O\u010dek\u00e1van\u00e1 podpora protokolu WebTorrent v libtorrent 2.0 byla z d\u016fvodu nevy\u0159e\u0161en\u00fdch probl\u00e9m\u016f se stabilitou odlo\u017eena<\/a><\/noindex> do p\u0159\u00ed\u0161t\u00edho v\u00fdznamn\u00e9ho vyd\u00e1n\u00ed, kter\u00e9 vyjde nejd\u0159\u00edve na konci roku. <\/p>\n

<\/a><\/noindex><\/p>\n

Zdroj: opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d \u0437\u043d\u0430\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0439 \u0432\u044b\u043f\u0443\u0441\u043a \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 libtorrent 2.0 (\u0438\u0437\u0432\u0435\u0441\u0442\u043d\u0430 \u0442\u0430\u043a\u0436\u0435 \u043a\u0430\u043a libtorrent-rasterbar), \u043f\u0440\u0435\u0434\u043b\u0430\u0433\u0430\u044e\u0449\u0435\u0439 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044e \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 BitTorrent, \u044d\u0444\u0444\u0435\u043a\u0442\u0438\u0432\u043d\u0443\u044e \u0441 \u0442\u043e\u0447\u043a\u0438 \u0437\u0440\u0435\u043d\u0438\u044f \u043f\u043e\u0442\u0440\u0435\u0431\u043b\u0435\u043d\u0438\u044f \u043f\u0430\u043c\u044f\u0442\u0438 \u0438 \u043d\u0430\u0433\u0440\u0443\u0437\u043a\u0438 \u043d\u0430 CPU. \u0411\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0430 \u0437\u0430\u0434\u0435\u0439\u0441\u0442\u0432\u043e\u0432\u0430\u043d\u0430 \u0432 \u0442\u0430\u043a\u0438\u0445 \u0442\u043e\u0440\u0440\u0435\u043d\u0442-\u043a\u043b\u0438\u0435\u043d\u0442\u0430\u0445, \u043a\u0430\u043a Deluge, qBittorrent, Folx, Lince, Miro \u0438 Flush (\u043d\u0435 \u043f\u0443\u0442\u0430\u0442\u044c \u0441 \u0434\u0440\u0443\u0433\u043e\u0439 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u043e\u0439 libtorrent, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442\u0441\u044f \u0432 rTorrent). \u041a\u043e\u0434 libtorrent \u043d\u0430\u043f\u0438\u0441\u0430\u043d \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 C++ \u0438 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u044f\u0435\u0442\u0441\u044f […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-93570","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47Verze libtorrent 2.0 s podporou protokolu BitTorrent 2 | ProHoster","description":"Bylo p\u0159edstaveno v\u00fdznamn\u00e9 vyd\u00e1n\u00ed knihovny libtorrent.","canonical_url":"https:\/\/prohoster.info\/cs\/blog\/news\/vypusk-libtorrent-2-0-s-podderzhkoj-protokola-bittorrent-2","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"cs_CZ","og:site_name":"ProHoster 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