{"id":38322,"date":"2019-10-31T22:22:58","date_gmt":"2019-10-31T19:22:58","guid":{"rendered":"https:\/\/prohoster.info\/blog\/v-chrome-dobavlena-eksperimentalnaya-podderzhka-protokola-http-3\/"},"modified":"2019-10-31T22:22:58","modified_gmt":"2019-10-31T19:22:58","slug":"v-chrome-dobavlena-eksperimentalnaya-podderzhka-protokola-http-3","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/v-chrome-dobavlena-eksperimentalnaya-podderzhka-protokola-http-3","title":{"rendered":"Do Chrome byla p\u0159id\u00e1na experiment\u00e1ln\u00ed podpora protokolu HTTP\/3","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Do experiment\u00e1ln\u00edch sestaven\u00ed <noindex><a rel=\"nofollow\" href=\"https:\/\/www.google.com\/chrome\/canary\/\">Chrome Canary<\/a><\/noindex> <noindex><a rel=\"nofollow\" href=\"https:\/\/twitter.com\/programmingart\/status\/1174775953316294658\">byla p\u0159id\u00e1na<\/a><\/noindex> podpora protokolu HTTP\/3, kter\u00fd implementuje rozhran\u00ed pro provoz HTTP nad protokolem QUIC. Protokol QUIC byl do prohl\u00ed\u017ee\u010de p\u0159id\u00e1n p\u0159ed p\u011bti lety a od t\u00e9 doby slou\u017e\u00ed k optimalizaci slu\u017eeb Google. Varianta QUIC od Google pou\u017e\u00edvan\u00e1 v Chrome se v\u0161ak v n\u011bkter\u00fdch detailech li\u0161ila od varianty z <noindex><a rel=\"nofollow\" href=\"https:\/\/tools.ietf.org\/html\/draft-ietf-quic-transport-23\">specifikac\u00ed<\/a><\/noindex> IETF, ale nyn\u00ed jsou implementace synchronizov\u00e1ny.<\/p>\n<p>HTTP\/3 standardizuje pou\u017e\u00edv\u00e1n\u00ed QUIC jako transportu pro HTTP\/2. Pro aktivaci HTTP\/3 a varianty QUIC z <noindex><a rel=\"nofollow\" href=\"https:\/\/tools.ietf.org\/html\/draft-ietf-quic-transport-23\">draftu 23<\/a><\/noindex> Pro specifikace IETF je t\u0159eba spustit Chrome s mo\u017enostmi  &#171;&#8212;enable-quic &#8212;quic-version=h3-23&#187;, po \u010dem\u017e se otev\u0159e testovac\u00ed webov\u00e1 str\u00e1nka. <noindex><a rel=\"nofollow\" href=\"https:\/\/quic.rocks:4433\/\">quic.rocks:4433<\/a><\/noindex> V re\u017eimu inspekce s\u00edt\u011b v n\u00e1stroj\u00edch pro v\u00fdvoj\u00e1\u0159e se aktivita HTTP\/3 zobraz\u00ed jako &#171;http\/2+quic\/99&#187;.<\/p>\n<p>P\u0159ipom\u00edn\u00e1me, \u017ee protokol <noindex><a rel=\"nofollow\" href=\"https:\/\/www.chromium.org\/quic\/\">QUIC<\/a><\/noindex> (Quick UDP Internet Connections) je od roku 2013 vyv\u00edjen firmou Google jako alternativa spojen\u00ed TCP+TLS pro web, kter\u00e1 \u0159e\u0161\u00ed probl\u00e9my s dlouh\u00fdm \u010dasem pro vybudov\u00e1n\u00ed a sjedn\u00e1n\u00ed p\u0159ipojen\u00ed v TCP a eliminuje zpo\u017ed\u011bn\u00ed p\u0159i ztr\u00e1t\u011b paket\u016f b\u011bhem p\u0159enosu dat. QUIC p\u0159edstavuje vrstvu nad protokolem UDP a podporuje multiplexov\u00e1n\u00ed v\u00edce p\u0159ipojen\u00ed a poskytuje metody \u0161ifrov\u00e1n\u00ed, kter\u00e9 odpov\u00eddaj\u00ed TLS\/SSL. Posuzovan\u00fd protokol je ji\u017e integrov\u00e1n do serverov\u00e9 infrastruktury Google, je sou\u010d\u00e1st\u00ed Chrome, <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=48312\">je napl\u00e1nov\u00e1no<\/a><\/noindex> je ur\u010den pro Firefox a aktivn\u011b se pou\u017e\u00edv\u00e1 k obsluze z\u00e1kaznick\u00fdch dotaz\u016f na serverech Google. <\/p>\n<p>Hlavn\u00ed <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.google.com\/document\/d\/1lmL9EF6qKrk7gbazY8bIdvq3Pno2Xj_l_YShP40GLQE\/preview?sle=true#\">vlastnosti<\/a><\/noindex> QUIC:\n<\/p>\n<ul>\n<li class=\"l\"> Vysok\u00e1 bezpe\u010dnost, srovnateln\u00e1 s TLS (v podstat\u011b QUIC poskytuje mo\u017enost pou\u017eit\u00ed TLS nad UDP);\n<\/li>\n<li class=\"l\"> Kontrola integrity toku, kter\u00e1 zabra\u0148uje ztr\u00e1t\u011b paket\u016f;\n<\/li>\n<li class=\"l\"> Mo\u017enost okam\u017eit\u00e9ho nav\u00e1z\u00e1n\u00ed spojen\u00ed (0-RTT, v p\u0159ibli\u017en\u011b 75% p\u0159\u00edpad\u016f lze data p\u0159en\u00e1\u0161et ihned po odesl\u00e1n\u00ed prvn\u00edho paketu) a zaji\u0161t\u011bn\u00ed minim\u00e1ln\u00edch zpo\u017ed\u011bn\u00ed mezi odesl\u00e1n\u00edm po\u017eadavku a obdr\u017een\u00edm odpov\u011bdi (RTT, doba zp\u011btn\u00e9 cesty);\n<\/li>\n<li class=\"l\"> Nepou\u017eit\u00ed stejn\u00e9ho \u010d\u00edsla sekvence p\u0159i op\u011btovn\u00e9m odesl\u00e1n\u00ed paketu, co\u017e eliminuje nejednozna\u010dnost p\u0159i ur\u010dov\u00e1n\u00ed p\u0159ijat\u00fdch paket\u016f a zbavuje se \u010dasov\u00fdch limit\u016f;\n<\/li>\n<li class=\"l\"> Ztr\u00e1ta paketu ovliv\u0148uje doru\u010den\u00ed pouze souvisej\u00edc\u00edho toku a nezastavuje doru\u010den\u00ed dat v paraleln\u011b p\u0159en\u00e1\u0161en\u00fdch toc\u00edch p\u0159es aktu\u00e1ln\u00ed spojen\u00ed;\n<\/li>\n<li class=\"l\"> N\u00e1stroje pro opravu chyb, kter\u00e9 minimalizuj\u00ed zpo\u017ed\u011bn\u00ed zp\u016fsoben\u00e9 op\u011btovn\u00fdm p\u0159enosem ztracen\u00fdch paket\u016f. Vyu\u017eit\u00ed speci\u00e1ln\u00edch chybov\u00fdch k\u00f3d\u016f na \u00farovni paket\u016f pro sn\u00ed\u017een\u00ed situac\u00ed, kter\u00e9 vy\u017eaduj\u00ed op\u011btovn\u00fd p\u0159enos dat ztracen\u00e9ho paketu.\n<\/li>\n<li class=\"l\"> Kryptografick\u00e9 hranice blok\u016f jsou zarovn\u00e1ny s hranicemi paket\u016f QUIC, co\u017e sni\u017euje vliv ztr\u00e1t paket\u016f na dek\u00f3dov\u00e1n\u00ed obsahu n\u00e1sleduj\u00edc\u00edch paket\u016f;\n<\/li>\n<li class=\"l\"> \u017d\u00e1dn\u00e9 probl\u00e9my s blokov\u00e1n\u00edm front TCP;\n<\/li>\n<li class=\"l\"> Podpora identifik\u00e1toru spojen\u00ed, kter\u00e1 sni\u017euje \u010das pot\u0159ebn\u00fd k op\u011btovn\u00e9mu nav\u00e1z\u00e1n\u00ed spojen\u00ed pro mobiln\u00ed klienty;\n<\/li>\n<li class=\"l\"> Mo\u017enost p\u0159ipojen\u00ed roz\u0161\u00ed\u0159en\u00fdch mechanism\u016f \u0159\u00edzen\u00ed p\u0159et\u00ed\u017een\u00ed spojen\u00ed;\n<\/li>\n<li class=\"l\"> Pou\u017eit\u00ed techniky predikce \u0161\u00ed\u0159ky p\u00e1sma v ka\u017ed\u00e9m sm\u011bru pro zaji\u0161t\u011bn\u00ed optim\u00e1ln\u00ed intenzity odes\u00edl\u00e1n\u00ed paket\u016f, co\u017e zabra\u0148uje p\u0159echodu do stavu p\u0159et\u00ed\u017een\u00ed, ve kter\u00e9m doch\u00e1z\u00ed ke ztr\u00e1t\u011b paket\u016f;\n<\/li>\n<li class=\"l\">  V\u00fdrazn\u00fd <noindex><a rel=\"nofollow\" href=\"http:\/\/web.cs.wpi.edu\/~claypool\/ms\/quic\/quic-thesis.pdf\">n\u00e1r\u016fst<\/a><\/noindex> v\u00fdkonu a propustnosti ve srovn\u00e1n\u00ed s TCP. Pro video slu\u017eby, jako je YouTube, prok\u00e1zal QUIC sn\u00ed\u017een\u00ed operac\u00ed znovu vyrovn\u00e1n\u00ed b\u011bhem sledov\u00e1n\u00ed videa o 30%.\n<\/li>\n<\/ul>\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=51526\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412 \u044d\u043a\u0441\u043f\u0435\u0440\u0438\u043c\u0435\u043d\u0442\u0430\u043b\u044c\u043d\u044b\u0435 \u0441\u0431\u043e\u0440\u043a\u0438 Chrome Canary \u0434\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u0430 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0430 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 HTTP\/3, \u0440\u0435\u0430\u043b\u0438\u0437\u0443\u044e\u0449\u0435\u0433\u043e \u043d\u0430\u0434\u0441\u0442\u0440\u043e\u0439\u043a\u0443 \u0434\u043b\u044f \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f \u0440\u0430\u0431\u043e\u0442\u044b HTTP \u043f\u043e\u0432\u0435\u0440\u0445 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 QUIC. \u041d\u0435\u043f\u043e\u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0435\u043d\u043d\u043e \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b QUIC \u0431\u044b\u043b \u0434\u043e\u0431\u0430\u0432\u043b\u0435\u043d \u0432 \u0431\u0440\u0430\u0443\u0437\u0435\u0440 \u043f\u044f\u0442\u044c \u043b\u0435\u0442 \u043d\u0430\u0437\u0430\u0434 \u0438 \u0441 \u0442\u0435\u0445 \u043f\u043e\u0440 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442\u0441\u044f \u0434\u043b\u044f \u043e\u043f\u0442\u0438\u043c\u0438\u0437\u0430\u0446\u0438\u0438 \u0440\u0430\u0431\u043e\u0442\u044b \u0441 \u0441\u0435\u0440\u0432\u0438\u0441\u0430\u043c\u0438 Google. \u041f\u0440\u0438 \u044d\u0442\u043e\u043c \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0432\u0448\u0438\u0439\u0441\u044f \u0432 Chrome \u0432\u0430\u0440\u0438\u0430\u043d\u0442 QUIC \u043e\u0442 Google \u0432 \u043d\u0435\u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u0434\u0435\u0442\u0430\u043b\u044f\u0445 \u043e\u0442\u043b\u0438\u0447\u0430\u043b\u0441\u044f \u043e\u0442 \u0432\u0430\u0440\u0438\u0430\u043d\u0442\u0430 \u0438\u0437 [&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-38322","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=\"\u0412 \u044d\u043a\u0441\u043f\u0435\u0440\u0438\u043c\u0435\u043d\u0442\u0430\u043b\u044c\u043d\u044b\u0435 \u0441\u0431\u043e\u0440\u043a\u0438 Chrome Canary\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/prohoster.info\/cs\/blog\/news\/v-chrome-dobavlena-eksperimentalnaya-podderzhka-protokola-http-3\" \/>\n\t\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.3\" \/>\n\t\t<meta property=\"og:locale\" content=\"cs_CZ\" \/>\n\t\t<meta property=\"og:site_name\" content=\"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"\ud83e\udd47\u0412 Chrome \u0434\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u0430 \u044d\u043a\u0441\u043f\u0435\u0440\u0438\u043c\u0435\u043d\u0442\u0430\u043b\u044c\u043d\u0430\u044f \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0430 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 HTTP\/3 | ProHoster\" \/>\n\t\t<meta property=\"og:description\" content=\"\u0412 \u044d\u043a\u0441\u043f\u0435\u0440\u0438\u043c\u0435\u043d\u0442\u0430\u043b\u044c\u043d\u044b\u0435 \u0441\u0431\u043e\u0440\u043a\u0438 Chrome Canary\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/prohoster.info\/cs\/blog\/news\/v-chrome-dobavlena-eksperimentalnaya-podderzhka-protokola-http-3\" \/>\n\t\t<meta property=\"og:image\" content=\"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg\" \/>\n\t\t<meta property=\"og:image:secure_url\" content=\"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg\" \/>\n\t\t<meta property=\"og:image:width\" content=\"350\" \/>\n\t\t<meta property=\"og:image:height\" content=\"350\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2019-10-31T19:22:58+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2019-10-31T19:22:58+00:00\" \/>\n\t\t<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/prohoster\" \/>\n\t\t<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/prohoster\" \/>\n\t\t<!-- All in One SEO -->\n\n","aioseo_head_json":{"title":"\ud83e\udd47Do Chrome byla p\u0159id\u00e1na experiment\u00e1ln\u00ed podpora protokolu HTTP\/3 | ProHoster","description":"Do experiment\u00e1ln\u00edch sestaven\u00ed Chrome Canary","canonical_url":"https:\/\/prohoster.info\/cs\/blog\/news\/v-chrome-dobavlena-eksperimentalnaya-podderzhka-protokola-http-3","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"cs_CZ","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u0412 Chrome \u0434\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u0430 \u044d\u043a\u0441\u043f\u0435\u0440\u0438\u043c\u0435\u043d\u0442\u0430\u043b\u044c\u043d\u0430\u044f \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0430 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 HTTP\/3 | ProHoster","og:description":"\u0412 \u044d\u043a\u0441\u043f\u0435\u0440\u0438\u043c\u0435\u043d\u0442\u0430\u043b\u044c\u043d\u044b\u0435 \u0441\u0431\u043e\u0440\u043a\u0438 Chrome Canary","og:url":"https:\/\/prohoster.info\/cs\/blog\/news\/v-chrome-dobavlena-eksperimentalnaya-podderzhka-protokola-http-3","og:image":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:secure_url":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:width":350,"og:image:height":350,"article:published_time":"2019-10-31T19:22:58+00:00","article:modified_time":"2019-10-31T19:22:58+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":{"post_id":"38322","title":null,"description":null,"keywords":null,"keyphrases":null,"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":null,"og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"","isEnabled":true},"graphs":[]},"schema_type":null,"schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":null,"robots_max_videopreview":null,"robots_max_imagepreview":"large","priority":null,"frequency":null,"local_seo":null,"seo_analyzer_scan_date":"2026-01-23 21:30:19","breadcrumb_settings":null,"limit_modified_date":false,"reviewed_by":null,"ai":null,"created":"2021-03-01 01:11:23","updated":"2026-01-23 21:30:19","focus_keyword":null,"additional_keywords":null,"truseo_locale":null},"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/cs\/wp-json\/wp\/v2\/posts\/38322","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/cs\/wp-json\/wp\/v2\/comments?post=38322"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/cs\/wp-json\/wp\/v2\/posts\/38322\/revisions"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/cs\/wp-json\/wp\/v2\/media?parent=38322"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/cs\/wp-json\/wp\/v2\/categories?post=38322"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/cs\/wp-json\/wp\/v2\/tags?post=38322"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}