{"id":92099,"date":"2020-08-22T19:42:21","date_gmt":"2020-08-22T17:42:21","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/dlya-chrome-razvivaetsya-api-dlya-pryamyh-tcp-i-udp-kommunikaczij"},"modified":"2020-08-22T19:42:21","modified_gmt":"2020-08-22T17:42:21","slug":"dlya-chrome-razvivaetsya-api-dlya-pryamyh-tcp-i-udp-kommunikaczij","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/dlya-chrome-razvivaetsya-api-dlya-pryamyh-tcp-i-udp-kommunikaczij","title":{"rendered":"Pro Chrome se vyv\u00edj\u00ed API pro p\u0159\u00edmou komunikaci p\u0159es TCP a UDP","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Spole\u010dnost Google <noindex><a rel=\"nofollow\" href=\"https:\/\/groups.google.com\/a\/chromium.org\/g\/blink-dev\/c\/ARtkaw4e9T4\/m\/npjeMssPCAAJ\">zah\u00e1jila<\/a><\/noindex> implementaci nov\u00e9ho API v Chromu <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/WICG\/raw-sockets\/blob\/master\/docs\/explainer.md\">Raw Sockets<\/a><\/noindex>, co\u017e umo\u017e\u0148uje webov\u00fdm aplikac\u00edm vytv\u00e1\u0159et p\u0159\u00edm\u00e1 s\u00ed\u0165ov\u00e1 spojen\u00ed pomoc\u00ed protokol\u016f TCP a UDP. V roce 2015 se konsorcium W3C ji\u017e pokusilo o standardizaci API &#171;<noindex><a rel=\"nofollow\" href=\"https:\/\/www.w3.org\/TR\/tcp-udp-sockets\/\">TCP a UDP Socket<\/a><\/noindex>&#171;, ale \u00fa\u010dastn\u00edci pracovn\u00edho t\u00fdmu nedos\u00e1hli konsensu a v\u00fdvoj tohoto API byl zastaven.<\/p>\n<p>Pot\u0159eba p\u0159id\u00e1n\u00ed nov\u00e9ho API je od\u016fvodn\u011bna mo\u017enost\u00ed interakce se s\u00ed\u0165ov\u00fdmi za\u0159\u00edzen\u00edmi, kter\u00e1 pou\u017e\u00edvaj\u00ed vlastn\u00ed protokoly funguj\u00edc\u00ed nad TCP a UDP a nepodporuj\u00ed interakci p\u0159es HTTPS nebo WebSockets. API Raw Sockets dopln\u00ed ji\u017e existuj\u00edc\u00ed n\u00edzko\u00farov\u0148ov\u00e9 programovac\u00ed rozhran\u00ed v prohl\u00ed\u017ee\u010di, jako jsou WebUSB, WebMIDI a WebBluetooth, kter\u00e9 umo\u017e\u0148uj\u00ed komunikaci s m\u00edstn\u00edmi za\u0159\u00edzen\u00edmi.<\/p>\n<p>Aby se minimalizoval negativn\u00ed vliv na bezpe\u010dnost, API Raw Sockets povol\u00ed s\u00ed\u0165ov\u00e9 po\u017eadavky pouze iniciovan\u00e9 se souhlasem u\u017eivatele a omezen\u00e9 seznamem povolen\u00fdch hostitel\u016f. U\u017eivatel mus\u00ed v\u00fdslovn\u011b potvrdit prvn\u00ed pokus o spojen\u00ed s nov\u00fdm hostitelem. Pomoc\u00ed speci\u00e1ln\u00edho p\u0159\u00edznaku bude moci u\u017eivatel vypnout zobrazov\u00e1n\u00ed opakovan\u00fdch \u017e\u00e1dost\u00ed o potvrzen\u00ed operace p\u0159i opakovan\u00fdch p\u0159ipojen\u00edch k dan\u00e9mu hostiteli. Aby se zabr\u00e1nilo DDoS \u00fatok\u016fm, bude intenzita po\u017eadavk\u016f p\u0159es Raw Sockets omezena a odes\u00edl\u00e1n\u00ed \u017e\u00e1dost\u00ed bude mo\u017en\u00e9 pouze po interakci u\u017eivatele se str\u00e1nkou. UDP pakety p\u0159ijat\u00e9 od hostitel\u016f, kter\u00e9 u\u017eivatel neschv\u00e1lil, budou ignorov\u00e1ny a nedostanou se k webov\u00e9 aplikaci.<\/p>\n<p>  Po\u010d\u00e1te\u010dn\u00ed implementace neumo\u017e\u0148uje vytv\u00e1\u0159en\u00ed poslechov\u00fdch soket\u016f, av\u0161ak v budoucnu se nezapom\u00edn\u00e1 na mo\u017enost poskytnout vol\u00e1n\u00ed pro p\u0159ij\u00edm\u00e1n\u00ed p\u0159\u00edchoz\u00edch spojen\u00ed z localhostu nebo seznamu zn\u00e1m\u00fdch hostitel\u016f. Tak\u00e9 se zmi\u0148uje pot\u0159eba ochrany proti \u00fatok\u016fm &#171;<noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=52169\">DNS rebinding<\/a><\/noindex>&#187; (\u00fato\u010dn\u00edk m\u016f\u017ee na \u00farovni DNS zm\u011bnit IP adresu pro schv\u00e1len\u00e9 u\u017eivatelsk\u00e9 dom\u00e9nov\u00e9 jm\u00e9no a z\u00edskat p\u0159\u00edstup k dal\u0161\u00edm hostitel\u016fm). P\u0159\u00edstup k dom\u00e9n\u00e1m, kter\u00e9 se p\u0159ekladaj\u00ed na 127.0.0.0\/8 a intranetov\u00e9 s\u00edt\u011b, se pl\u00e1nuje blokovat (p\u0159\u00edpady p\u0159\u00edstupu na localhost by m\u011bly b\u00fdt povoleny pouze p\u0159i explicitn\u00edm zad\u00e1n\u00ed IP adresy ve form\u011b potvrzen\u00ed).<\/p>\n<p>Mezi riziky, kter\u00e1 mohou vzniknout p\u0159i realizaci nov\u00e9ho API, je jeho mo\u017en\u00e9 odm\u00edtnut\u00ed v\u00fdrobci jin\u00fdch prohl\u00ed\u017ee\u010d\u016f, co\u017e m\u016f\u017ee v\u00e9st k probl\u00e9m\u016fm s kompatibilitou. V\u00fdvoj\u00e1\u0159i engin\u016f Mozilla Gecko a WebKit zat\u00edm <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/mozilla\/standards-positions\/issues\/431\">nevyj\u00e1d\u0159ili<\/a><\/noindex> sv\u016fj postoj k mo\u017en\u00e9mu zaveden\u00ed API Raw Sockets, nicm\u00e9n\u011b spole\u010dnost Mozilla ji\u017e d\u0159\u00edve navrhla <noindex><a rel=\"nofollow\" href=\"https:\/\/developer.mozilla.org\/en-US\/docs\/Archive\/B2G_OS\/API\/TCPSocket\">podobn\u00e9 API<\/a><\/noindex>. V p\u0159\u00edpad\u011b schv\u00e1len\u00ed v prvn\u00ed f\u00e1zi pl\u00e1nujeme aktivaci API Raw Sockets v Chrome OS a n\u00e1sledn\u011b nab\u00eddnout u\u017eivatel\u016fm Chrome v dal\u0161\u00edch syst\u00e9mech.<\/p>\n<p>Webov\u00ed v\u00fdvoj\u00e1\u0159i <noindex><a rel=\"nofollow\" href=\"https:\/\/discourse.wicg.io\/t\/filling-the-remaining-gap-between-websocket-webrtc-and-webtranspor\/4366\">kladn\u011b<\/a><\/noindex> reagovali na nov\u00e9 API a navrhli mnoho nov\u00fdch n\u00e1pad\u016f na jeho vyu\u017eit\u00ed v oblastech, kde API XMLHttpRequest, WebSocket a WebRTC nesta\u010d\u00ed (od vytv\u00e1\u0159en\u00ed webov\u00fdch klient\u016f pro SSH, RDP, IMAP, SMTP, IRC a tiskov\u00fdch protokol\u016f a\u017e po v\u00fdvoj distribuovan\u00fdch P2P syst\u00e9m\u016f s DHT (Distributed Hash Table), podporu IPFS a interakci se specifick\u00fdmi protokoly IoT za\u0159\u00edzen\u00ed).<\/p>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Zdroj: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=53582\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Google \u043f\u0440\u0438\u0441\u0442\u0443\u043f\u0438\u043b\u0430 \u043a \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u0432 Chrome \u043d\u043e\u0432\u043e\u0433\u043e API Raw Sockets, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0435\u0433\u043e web-\u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f\u043c \u0443\u0441\u0442\u0430\u043d\u0430\u0432\u043b\u0438\u0432\u0430\u0442\u044c \u043f\u0440\u044f\u043c\u044b\u0435 \u0441\u0435\u0442\u0435\u0432\u044b\u0435 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u044f \u0441 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435\u043c \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u043e\u0432 TCP \u0438 UDP. \u0412 2015 \u0433\u043e\u0434\u0443 \u043a\u043e\u043d\u0441\u043e\u0440\u0446\u0438\u0443\u043c\u043e\u043c W3C \u0443\u0436\u0435 \u0431\u044b\u043b\u0430 \u043f\u0440\u0435\u0434\u043f\u0440\u0438\u043d\u044f\u0442\u0430 \u043f\u043e\u043f\u044b\u0442\u043a\u0430 \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u0438\u0437\u0430\u0446\u0438\u0438 API &#171;TCP and UDP Socket&#171;, \u043d\u043e \u0443\u0447\u0430\u0441\u0442\u043d\u0438\u043a\u0438 \u0440\u0430\u0431\u043e\u0447\u0435\u0439 \u0433\u0440\u0443\u043f\u043f\u044b \u043d\u0435 \u0434\u043e\u0441\u0442\u0438\u0433\u043b\u0438 \u043a\u043e\u043d\u0441\u0435\u043d\u0441\u0443\u0441\u0430 \u0438 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0430 \u0434\u0430\u043d\u043d\u043e\u0433\u043e API \u0431\u044b\u043b\u0430 \u043e\u0441\u0442\u0430\u043d\u043e\u0432\u043b\u0435\u043d\u0430. \u041d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u043e\u0441\u0442\u044c \u0434\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u043d\u043e\u0432\u043e\u0433\u043e API [&hellip;]<\/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-92099","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Google \u043f\u0440\u0438\u0441\u0442\u0443\u043f\u0438\u043b\u0430 \u043a \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u0432 Chrome \u043d\u043e\u0432\u043e\u0433\u043e API\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" 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