{"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\/en\/blog\/news\/v-chrome-dobavlena-eksperimentalnaya-podderzhka-protokola-http-3","title":{"rendered":"Experimental support for the HTTP\/3 protocol has been added in Chrome","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>In experimental builds <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\">has added<\/a><\/noindex> support for the HTTP\/3 protocol, which implements an overlay to enable HTTP to work over the QUIC protocol. The QUIC protocol was introduced in the browser five years ago and has since been used to optimize interactions with Google services. The version of QUIC used in Chrome differed in some ways from the version from <noindex><a rel=\"nofollow\" href=\"https:\/\/tools.ietf.org\/html\/draft-ietf-quic-transport-23\">specifications<\/a><\/noindex> IETF, but now the implementations are synchronized.<\/p>\n<p>HTTP\/3 standardizes the use of QUIC as the transport for HTTP\/2. To enable HTTP\/3 and the QUIC variant from <noindex><a rel=\"nofollow\" href=\"https:\/\/tools.ietf.org\/html\/draft-ietf-quic-transport-23\">draft 23<\/a><\/noindex> IETF specifications require Chrome to be launched with the options &#171;&#8212;enable-quic &#8212;quic-version=h3-23&#187;, after which opening the test site <noindex><a rel=\"nofollow\" href=\"https:\/\/quic.rocks:4433\/\">quic.rocks:4433<\/a><\/noindex> in the network inspection mode in the developer tools, activity over HTTP\/3 will be displayed as &#171;http\/2+quic\/99&#187;.<\/p>\n<p>Let\u2019s recall that the protocol <noindex><a rel=\"nofollow\" href=\"https:\/\/www.chromium.org\/quic\/\">QUIC<\/a><\/noindex> (Quick UDP Internet Connections) has been developed by Google since 2013 as an alternative to the TCP+TLS combination for the web, addressing issues with high connection setup and negotiation times in TCP and eliminating delays caused by packet loss during data transmission. QUIC is an overlay over the UDP protocol that supports multiplexing multiple connections and provides encryption methods equivalent to TLS\/SSL. The protocol in question is already integrated into Google\u2019s server infrastructure, is part of Chrome, <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=48312\">is scheduled<\/a><\/noindex> is being enabled in Firefox, and is actively used to service client requests on Google servers. <\/p>\n<p>Key <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.google.com\/document\/d\/1lmL9EF6qKrk7gbazY8bIdvq3Pno2Xj_l_YShP40GLQE\/preview?sle=true#\">Features<\/a><\/noindex> QUIC:\n<\/p>\n<ul>\n<li class=\"l\"> High security, similar to TLS (essentially QUIC provides the possibility of using TLS over UDP);\n<\/li>\n<li class=\"l\"> Stream integrity control that prevents packet loss;\n<\/li>\n<li class=\"l\"> The ability to establish a connection instantly (0-RTT, allowing data to be sent immediately after sending the connection establishment packet in about 75% of cases) and ensure minimal delays between sending a request and receiving a response (RTT, Round Trip Time);\n<\/li>\n<li class=\"l\"> Not reusing the same sequence number for retransmitted packets, which helps avoid ambiguity in determining received packets and eliminates timeouts;\n<\/li>\n<li class=\"l\"> Packet loss only affects the delivery of the associated stream and does not halt the delivery of data in parallel streams sent over the current connection;\n<\/li>\n<li class=\"l\"> Error correction mechanisms that minimize delays caused by retransmitting lost packets. Utilizing special error correction codes at the packet level to reduce situations requiring the retransmission of lost packet data.\n<\/li>\n<li class=\"l\"> Cryptographic block boundaries are aligned with the boundaries of QUIC packets, which reduces the impact of packet loss on the decoding of content in subsequent packets;\n<\/li>\n<li class=\"l\"> No queue blocking issues as with TCP;\n<\/li>\n<li class=\"l\"> Support for connection identifiers that reduce the time needed to establish a reconnection for mobile clients;\n<\/li>\n<li class=\"l\"> The possibility of incorporating advanced congestion control mechanisms;\n<\/li>\n<li class=\"l\"> The use of bandwidth prediction techniques in each direction to ensure optimal packet transmission intensity, preventing a fall into a state of congestion where packet loss occurs;\n<\/li>\n<li class=\"l\">  Significant <noindex><a rel=\"nofollow\" href=\"http:\/\/web.cs.wpi.edu\/~claypool\/ms\/quic\/quic-thesis.pdf\">increase<\/a><\/noindex> in performance and throughput compared to TCP. For video services like YouTube, the application of QUIC has shown a 30% reduction in rebuffering events during video playback.\n<\/li>\n<\/ul>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Source: <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 5.0.2 - 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\" 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\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 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