{"id":87243,"date":"2020-07-06T01:42:18","date_gmt":"2020-07-05T23:42:18","guid":{"rendered":"https:\/\/prohoster.info\/blog\/administrirovanie\/newnode-deczentralizovannaya-cdn-ot-razrabotchika-firechat"},"modified":"2020-07-06T01:42:18","modified_gmt":"2020-07-05T23:42:18","slug":"newnode-deczentralizovannaya-cdn-ot-razrabotchika-firechat","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/administrirovanie\/newnode-deczentralizovannaya-cdn-ot-razrabotchika-firechat","title":{"rendered":"NewNode \u2014 decentraliz\u00e1lt CDN a FireChat fejleszt\u0151j\u00e9t\u0151l","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><img decoding=\"async\" alt=\"NewNode \u2014 decentraliz\u00e1lt CDN a FireChat fejleszt\u0151j\u00e9t\u0151l\" src=\"\/wp-content\/uploads\/2020\/07\/0cf0dc3af9899a79d21a08580be94db8.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nNemr\u00e9giben r\u00e1bukkantam egy NewNode eml\u00edt\u00e9s\u00e9re:<\/p>\n<blockquote><p>A NewNode egy mobilfejleszt\u00e9si SDK, amely b\u00e1rmely alkalmaz\u00e1st v\u00e9dett\u00e9 tesz a cenz\u00far\u00e1val \u00e9s DDoS t\u00e1mad\u00e1sokkal szemben, \u00e9s dr\u00e1maian cs\u00f6kkenti a szerver terhel\u00e9s\u00e9t. P2P h\u00e1l\u00f3zat. Elm\u00e9letileg internet n\u00e9lk\u00fcl is m\u0171k\u00f6dhet.<\/p><\/blockquote>\n<p>\nEl\u00e9g zavarosnak t\u0171nt, de \u00e9rdekes, ez\u00e9rt elkezdtem ut\u00e1na j\u00e1rni. A repozit\u00f3riumban nem tal\u00e1ltam le\u00edr\u00e1st a projektr\u0151l, \u00edgy a Clostra weboldal\u00e1ra kellett mennem (ami el\u00e9gg\u00e9 furcsa), \u00e9s t\u00f6bbsz\u00f6r \u00e1t kellett n\u00e9znem a helyi landing oldalt, hogy meg\u00e9rtsem, mir\u0151l is van sz\u00f3, \u00e9s mi a technol\u00f3gia f\u0151bb jellemz\u0151je. Az al\u00e1bbiakban \u00f6sszefoglalom. <br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><\/p>\n<h3>dCDN<\/h3>\n<p>\nA Clostra fejleszt\u0151i \u00fagy v\u00e9lik, hogy a hagyom\u00e1nyos CDN rendszerek rosszul kezelik a h\u00e1l\u00f3zati t\u00falterhel\u00e9st, sebezhet\u0151k a cenz\u00far\u00e1val \u00e9s hackel\u00e9sekkel szemben, \u00e9s sok munk\u00e1t \u00e9s p\u00e9nzt ig\u00e9nyelnek a sk\u00e1l\u00e1z\u00e1s sor\u00e1n. Alternat\u00edv\u00e1t k\u00edn\u00e1lnak \u2014 egy decentraliz\u00e1lt CDN-t, amely lehet\u0151v\u00e9 teszi, hogy az alkalmaz\u00e1sok tartalmat cser\u00e9ljenek an\u00e9lk\u00fcl, hogy be lehetne avatkozni \u00e9s ellen\u0151rizni a forgalmat. Azt is \u00e1ll\u00edtj\u00e1k, hogy a dCDN sz\u00e9lesk\u00f6r\u0171 alkalmaz\u00e1sa nem okoz t\u00falterhel\u00e9seket \u00e9s a h\u00e1l\u00f3zat zs\u00fafolts\u00e1g\u00e1t.<\/p>\n<h3>Protokoll<\/h3>\n<p>\nAzt\u00e1n kider\u00fcl, hogy a NewNode egy peer-to-peer protokoll, amelyen m\u00e1r \u00e9p\u00fcl a dCDN. Magas sebess\u00e9get \u00edg\u00e9r, ami \u00e1ltal\u00e1ban probl\u00e9m\u00e1kat okoz a decentraliz\u00e1lt h\u00e1l\u00f3zatokban. <br \/>\nForm\u00e1lisan a protokoll sehol nincs le\u00edrva, de a PDF-b\u0151l az der\u00fcl ki, hogy a k\u00f6vetkez\u0151ket haszn\u00e1lja:<\/p>\n<ul>\n<li>LEDBAT<\/li>\n<li>Bittorrent DHT<\/li>\n<li>FireChat device-to-device kapcsolatai<\/li>\n<\/ul>\n<p>\nA k\u00fcl\u00f6n pontban szerepel a NewNode h\u00e1l\u00f3zatok automatikus telep\u00edt\u00e9s\u00e9nek \u00e9s jav\u00edt\u00e1s\u00e1nak k\u00e9pess\u00e9ge (az ut\u00f3bbi, val\u00f3sz\u00edn\u0171leg a mobil eszk\u00f6z\u00f6k mesh-h\u00e1l\u00f3zat\u00e1nak instabilit\u00e1s\u00e1ra utal). Emellett, mivel a fejleszt\u0151k arra sz\u00e1m\u00edtanak, hogy a protokollt minden lehets\u00e9ges alkalmaz\u00e1sba bevezetik, a NewNode \u00e1ltal gener\u00e1lt forgalom nem fogja leleplezni a felhaszn\u00e1l\u00f3t. DDoS elleni v\u00e9delem is kijelent\u00e9sre ker\u00fclt, \u00e9s k\u00fcl\u00f6n kiemelt\u00e9k a k\u00f6vetkez\u0151 mondatot:<\/p>\n<blockquote><p>Haszn\u00e1lja ki a BitTorrent 250 milli\u00f3s felhaszn\u00e1l\u00f3i b\u00e1zis\u00e1t<\/p><\/blockquote>\n<p>\nTulajdonk\u00e9ppen nem vil\u00e1gos, mit akartak ezzel mondani, \u00e9s hogyan hat\u00e1rozt\u00e1k meg a Bittorrent DHT-hez val\u00f3 hozz\u00e1f\u00e9r\u00e9st a Bittorrent felhaszn\u00e1l\u00f3 alapj\u00e1hoz.<\/p>\n<p>Az internet n\u00e9lk\u00fcli m\u0171k\u00f6d\u00e9s nyilv\u00e1nval\u00f3an a FireChat technol\u00f3gi\u00e1it\u00f3l sz\u00e1rmazik, de nem vil\u00e1gos, hogy milyen hat\u00e1rok k\u00f6z\u00f6tt. Az offline hozz\u00e1f\u00e9r\u00e9sr\u0151l sz\u00f3l\u00f3 egyetlen sorban eml\u00edtik a \"tartalm\u00e1hoz val\u00f3 hozz\u00e1f\u00e9r\u00e9st\", ami val\u00f3sz\u00edn\u0171leg azt jelenti, hogy az bej\u00f6v\u0151 adatokat egy szomsz\u00e9dos internetkapcsolattal rendelkez\u0151 kliensen kereszt\u00fcl haladnak \u00e1t a mesh-h\u00e1l\u00f3zaton.<\/p>\n<h3>T\u00e1rhely<\/h3>\n<p>\nAz Android, iOS \u00e9s macOS\/Linux SDK-k tal\u00e1lhat\u00f3k benne. A projekt h\u00e1rom \u00e9s f\u00e9l \u00e9vvel ezel\u0151tti indul\u00e1sa \u00f3ta n\u00e9gy k\u00f6zrem\u0171k\u00f6d\u0151 dolgozott benne, de l\u00e9nyeg\u00e9ben az eg\u00e9sz k\u00f3dot egy fejleszt\u0151 \u00edrta \u2014 <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/ghazel\">Greg Hazel<\/a><\/noindex>. Itt persze kicsit let\u00f6rtem \u2014 az eg\u00e9sz ambici\u00f3zus csillog\u00e1s l\u00e9nyeg\u00e9ben egy fejleszt\u0151 pet projektje lett. De van valami, ami rem\u00e9nnyel t\u00f6lthet el.<\/p>\n<p><img decoding=\"async\" alt=\"NewNode \u2014 decentraliz\u00e1lt CDN a FireChat fejleszt\u0151j\u00e9t\u0151l\" src=\"\/wp-content\/uploads\/2020\/07\/c9f548446d65ac6a1e832b1b0730dbb0.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nK\u00fcl\u00f6nb\u00f6z\u0151 kapcsolatok m\u00e1r a weboldalon ki\u00e9p\u00fcltek, \u00e9s amikor a GitHubon kutattam, v\u00e9gleg visszaeml\u00e9keztem. A Clostra vez\u00e9rigazgat\u00f3ja, aki a projektet fejleszti, \u00e9s az egyik k\u00f6zrem\u0171k\u00f6d\u0151 \u2014 Sztaniszl\u00e1v Salunov, a FireChat egyik fejleszt\u0151je \u00e9s az Alacsony Extra K\u00e9sleltet\u00e9s\u0171 H\u00e1tt\u00e9rsz\u00e1ll\u00edt\u00e1s (LEDBAT) szerz\u0151je, amelyen a Bittorrent, az Apple \u00e9s val\u00f3sz\u00edn\u0171leg m\u00e9g m\u00e1sok m\u0171k\u00f6dnek. Most m\u00e1r \u0151 is befektet\u0151, \u00e9s nagyon \u00fagy t\u0171nik, hogy komolyan tervezi a protokollj\u00e1nak fejleszt\u00e9s\u00e9t \u00e9s elterjeszt\u00e9s\u00e9t (vagy legal\u00e1bbis k\u00f6zismertebb\u00e9 t\u00e9tel\u00e9t, ahogyan az LEDBAT-tal t\u00f6rt\u00e9nt). <\/p>\n<h3>Ami m\u00e9g zavar\u00f3<\/h3>\n<p>\nA fejleszt\u0151t\u0151l val\u00f3 teljes f\u00fcgg\u0151s\u00e9gen k\u00edv\u00fcl m\u00e1s furcsas\u00e1gok is akadnak e projekt k\u00f6r\u00fcl.<\/p>\n<ul>\n<li>Senki nem \u00edr r\u00f3la sehol. Se a HN-en, se blogokban vagy Twitteren. Teljes inform\u00e1ci\u00f3s v\u00e1kuum. M\u00e9g azt sem tudom, honnan tudott r\u00f3la az az ember, aki a poszt eleji jellemz\u00e9st \u00edrta.<\/li>\n<li>Ha az \u00f6tlet val\u00f3ban j\u00f3, akkor a Salunov szem\u00e9lyes m\u00e1rk\u00e1j\u00e1t \u00e9s tekint\u00e9ly\u00e9t kihaszn\u00e1lva m\u00e1r r\u00e9g el lehetett volna ind\u00edtani, \u00e9s t\u00e1mogat\u00e1st kellett volna szerezni nagyobb szerepl\u0151kt\u0151l (vagy nagyobb k\u00f6z\u00f6ss\u00e9gt\u0151l). Semmi ilyesmi nincs.<\/li>\n<li>A Clostra egy nagyon zavaros st\u00fadi\u00f3. T\u00e9nyleg nagyon. Rendk\u00edv\u00fcl furcsa kin\u00e9zet\u0171 weboldaluk van, ahol bemutatj\u00e1k egyetlen term\u00e9k\u00fcket, a Keymaker-t (no meg a NewNode-ot), mindezt p\u00e9ld\u00e1k, v\u00e9lem\u00e9nyek, k\u00e9perny\u0151k\u00e9pek \u00e9s egy\u00e9b, a f\u00f6ldoldalhoz k\u00f6telez\u0151 tartalom n\u00e9lk\u00fcl. Csak lelkes\u00edt\u0151 sz\u00f6veg tal\u00e1lhat\u00f3 elmos\u00f3dott megfogalmaz\u00e1sokkal, \u00e9s ikonok egy k\u00f6zeli k\u00e9szletb\u0151l. Nem lehet felt\u00e9rk\u00e9pezni a csapatot, az \u00e1ll\u00e1shirdet\u00e9seket vagy egy\u00e1ltal\u00e1n b\u00e1rmi m\u00e1st megtudni err\u0151l a c\u00e9gr\u0151l. Van egy Twitter fi\u00f3kjuk, ami l\u00e1that\u00f3an egy bot \u00e1ltal m\u0171k\u00f6dtetett, \u00e9s egy elhagyatott Facebook oldal, amit a l\u00e9trehoz\u00e1s pillanat\u00e1ban hagytak el. De minden k\u00fcls\u0151 furcsas\u00e1ga ellen\u00e9re t\u00f6bbsz\u00f6r kiemelik az \u00e1llami szolg\u00e1ltat\u00e1sokkal val\u00f3 egy\u00fcttm\u0171k\u00f6d\u00e9s t\u00e9ny\u00e9t, k\u00fcl\u00f6n\u00f6sen a V\u00e9delmi Miniszt\u00e9riummal. H\u00e1rom v\u00e9lem\u00e9ny \u00e9rkezett a vel\u00fck val\u00f3 munkav\u00e1llal\u00e1sr\u00f3l, ahol kett\u0151 \u00e9les negat\u00edv (p\u00e9ld\u00e1ul: \u201eNe pazarold az id\u0151det a Clostra-val. Valami b\u0171zlik ennek a csal\u00e1snak a k\u00f6rny\u00e9k\u00e9n.\u201d), m\u00edg egy nagyon pozit\u00edv. \u00d6sszess\u00e9g\u00e9ben els\u0151 r\u00e1n\u00e9z\u00e9sre ez a projekt nem k\u00fcl\u00f6nb\u00f6zik egy csal\u00e1st\u00f3l.<\/li>\n<\/ul>\n<p>\nN\u00e9zz\u00fck, mi s\u00fcl ki az eg\u00e9szb\u0151l, sz\u00e1momra \u00e9rdekes lesz figyelemmel k\u00eds\u00e9rni egy ilyen ambici\u00f3zus projektet. Ha a NewNode sikeres lesz, akkor el\u00e9g jelent\u0151sen megv\u00e1ltoztathatja a mobilalkalmaz\u00e1sok m\u0171k\u00f6d\u00e9s\u00e9t \u00e9s forgalm\u00e1t, de ha buk\u00e1sra \u00e1ll, egy felel\u0151ss\u00e9gteljesebb \u00e9s k\u00e9pesebb szem\u00e9ly is \u00e1tveheti az \u00f6tletet.<\/p>\n<p><\/p>\n<h4>Hirdet\u00e9s<\/h4>\n<p>\nEpic szerverek \u2014 megb\u00edzhat\u00f3ak. <noindex><a rel=\"nofollow\" href=\"https:\/\/vdsina.ru\/cloud-servers?partner=habr30\">VDS KVM alap\u00fa.<\/a><\/noindex> A leg\u00fajabb AMD EPYC processzorokkal. Mint m\u00e1s szervert\u00edpusok eset\u00e9ben, sz\u00e9les v\u00e1laszt\u00e9k \u00e1ll rendelkez\u00e9sre automatikus telep\u00edt\u00e9sre, valamint lehet\u0151s\u00e9g van b\u00e1rmilyen oper\u00e1ci\u00f3s rendszer telep\u00edt\u00e9s\u00e9re saj\u00e1t magunk \u00e1ltal. <noindex><a rel=\"nofollow\" href=\"https:\/\/vdsina.ru\/qa\/q\/kak-ispolzovat-svoy-obraz-iso-v-vds?partner=habr30\">ISO<\/a><\/noindex>, k\u00e9nyelmes <noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/vdsina\/blog\/460107\/\">vez\u00e9rl\u0151panel<\/a><\/noindex> saj\u00e1t fejleszt\u00e9s \u00e9s napi d\u00edjfizet\u00e9s.<\/p>\n<p><noindex><a rel=\"nofollow\" href=\"https:\/\/vdsina.ru\/cloud-servers?partner=habr30\"><img decoding=\"async\" alt=\"NewNode \u2014 decentraliz\u00e1lt CDN a FireChat fejleszt\u0151j\u00e9t\u0151l\" src=\"\/wp-content\/uploads\/2020\/07\/22f1e29c9f4f050f504faa497d45beb4.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><br \/>\n<br \/>Forr\u00e1s: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/vdsina\/blog\/509382\/\">habr.com<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041d\u0430 \u0434\u043d\u044f\u0445 \u044f \u043d\u0430\u0442\u043a\u043d\u0443\u043b\u0441\u044f \u043d\u0430 \u0443\u043f\u043e\u043c\u0438\u043d\u0430\u043d\u0438\u0435 \u043d\u0435\u043a\u043e\u0435\u0433\u043e NewNode: NewNode \u2014 SDK \u0434\u043b\u044f \u043c\u043e\u0431\u0438\u043b\u044c\u043d\u043e\u0439 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0434\u0435\u043b\u0430\u0435\u0442 \u043b\u044e\u0431\u043e\u0435 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0435 \u043d\u0435\u0443\u0431\u0438\u0432\u0430\u0435\u043c\u044b\u043c \u0434\u043b\u044f \u043b\u044e\u0431\u043e\u0439 \u0446\u0435\u043d\u0437\u0443\u0440\u044b \u0438 DDoS, \u0438 \u0434\u0440\u0430\u043c\u0430\u0442\u0438\u0447\u0435\u0441\u043a\u0438 \u0441\u043d\u0438\u0436\u0430\u0435\u0442 \u043d\u0430\u0433\u0440\u0443\u0437\u043a\u0443 \u043d\u0430 \u0441\u0435\u0440\u0432\u0435\u0440\u0435. P2P \u0441\u0435\u0442\u044c. \u041c\u043e\u0436\u0435\u0442 \u0440\u0430\u0431\u043e\u0442\u0430\u0442\u044c \u0432 \u0442\u0435\u043e\u0440\u0438\u0438 \u0431\u0435\u0437 \u0438\u043d\u0442\u0435\u0440\u043d\u0435\u0442\u0430. \u0412\u044b\u0433\u043b\u044f\u0434\u0435\u043b\u043e \u0434\u043e\u0432\u043e\u043b\u044c\u043d\u043e \u0441\u0443\u043c\u0431\u0443\u0440\u043d\u043e, \u043d\u043e \u0438\u043d\u0442\u0435\u0440\u0435\u0441\u043d\u043e, \u0438 \u044f \u043f\u043e\u043b\u0435\u0437 \u0440\u0430\u0437\u0431\u0438\u0440\u0430\u0442\u044c\u0441\u044f. \u0412 \u0440\u0435\u043f\u043e\u0437\u0438\u0442\u043e\u0440\u0438\u0438 \u043d\u0435 \u043d\u0430\u0448\u043b\u043e\u0441\u044c \u043c\u0435\u0441\u0442\u0430 \u043e\u043f\u0438\u0441\u0430\u043d\u0438\u044e \u043f\u0440\u043e\u0435\u043a\u0442\u0430, \u043f\u043e\u044d\u0442\u043e\u043c\u0443 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