{"id":52244,"date":"2019-11-04T00:00:00","date_gmt":"2019-11-03T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/v-nochnyh-sborkah-firefox-poyavilas-podderzhka-http-3"},"modified":"2020-02-18T13:59:55","modified_gmt":"2020-02-18T10:59:55","slug":"v-nochnyh-sborkah-firefox-poyavilas-podderzhka-http-3","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pl\/blog\/news\/v-nochnyh-sborkah-firefox-poyavilas-podderzhka-http-3","title":{"rendered":"W nocnych wersjach Firefoxa dodano wsparcie dla HTTP\/3.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>W <noindex><a rel=\"nofollow\" href=\"https:\/\/www.mozilla.org\/en-US\/firefox\/channel\/desktop\/#nightly\">nocne wydania<\/a><\/noindex>  Firefox, kt\u00f3ry b\u0119dzie podstaw\u0105 wersji Firefox 72, zaplanowanej na 7 stycznia, <noindex><a rel=\"nofollow\" href=\"https:\/\/bugzilla.mozilla.org\/show_bug.cgi?id=1581637\">dodano<\/a><\/noindex> wsparcie protoko\u0142u HTTP\/3. Domy\u015blnie HTTP\/3 jest wy\u0142\u0105czony i wymaga aktywacji opcji &#171;network.http.http3.enabled&#187; w about:config. <\/p>\n<p>Wsparcie HTTP\/3 w Firefox opiera si\u0119 na rozwijanym przez firm\u0119 Mozilla projekcie <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/mozilla\/neqo\">neqo<\/a><\/noindex>, kt\u00f3ry zapewnia implementacj\u0119 klienta i serwera dla protoko\u0142u QUIC. Kod komponent\u00f3w wspieraj\u0105cych HTTP\/3 i QUIC zosta\u0142 napisany w j\u0119zyku Rust.<br \/>\nZ klienta oprogramowania eksperymentalne wsparcie dla HTTP\/3 jest ju\u017c  <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51526\">dodano<\/a><\/noindex> dost\u0119pne w Chrome i curl, a dla serwer\u00f3w dost\u0119pne jest w formie  <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/cloudflare\/quiche\/tree\/master\/extras\/nginx\">modu\u0142u<\/a><\/noindex> dla nginx i <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/cloudflare\/quiche\/blob\/master\/examples\/http3-server.rs\">testowego serwera<\/a><\/noindex> opartego na bibliotece <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/cloudflare\/quiche\">quiche<\/a><\/noindex> (<noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=50061\">realizacja<\/a><\/noindex>  QUIC i HTTP\/3 w j\u0119zyku Rust od firmy Cloudflare). Aby sprawdzi\u0107 dzia\u0142anie klient\u00f3w HTTP\/3 <noindex><a rel=\"nofollow\" href=\"https:\/\/bagder.github.io\/HTTP3-test\/\">uruchomiono<\/a><\/noindex> kilka stron testowych, z kt\u00f3rych wi\u0119kszo\u015b\u0107 wci\u0105\u017c nie otwiera si\u0119 poprawnie w Firefox (HTTP\/3 znajduje si\u0119 w fazie <noindex><a rel=\"nofollow\" href=\"https:\/\/datatracker.ietf.org\/doc\/draft-ietf-quic-http\/\">roboczej specyfikacji<\/a><\/noindex> i nie zosta\u0142 ostatecznie zstandaryzowany).<\/p>\n<p>Przypomnijmy, \u017ce HTTP\/3 standaryzuje u\u017cycie protoko\u0142u QUIC jako transportu dla HTTP\/2. Protok\u00f3\u0142 <noindex><a rel=\"nofollow\" href=\"https:\/\/www.chromium.org\/quic\/\">QUIC<\/a><\/noindex> (Quick UDP Internet Connections) od 2013 roku jest rozwijany przez firm\u0119 Google jako alternatywa dla po\u0142\u0105cze\u0144 TCP+TLS w sieci, rozwi\u0105zuj\u0105c problemy z d\u0142ugim czasem ustanawiania i uzgadniania po\u0142\u0105cze\u0144 w TCP oraz eliminuj\u0105c op\u00f3\u017anienia przy utracie pakiet\u00f3w w trakcie przesy\u0142ania danych. QUIC jest nadbudow\u0105 nad protoko\u0142em UDP, wspieraj\u0105c\u0105 mno\u017cenie po\u0142\u0105cze\u0144 i zapewniaj\u0105c\u0105 metody szyfrowania por\u00f3wnywalne z TLS\/SSL. <\/p>\n<p>Podstawowe <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.google.com\/document\/d\/1lmL9EF6qKrk7gbazY8bIdvq3Pno2Xj_l_YShP40GLQE\/preview?sle=true#\">cechy<\/a><\/noindex> QUIC:\n<\/p>\n<ul>\n<li class=\"l\"> Wysokie bezpiecze\u0144stwo, podobne do TLS (w zasadzie QUIC zapewnia mo\u017cliwo\u015b\u0107 u\u017cycia TLS nad UDP);\n<\/li>\n<li class=\"l\"> Kontrola integralno\u015bci strumienia, zapobiegaj\u0105ca utracie pakiet\u00f3w;\n<\/li>\n<li class=\"l\"> Mo\u017cliwo\u015b\u0107 natychmiastowego ustanowienia po\u0142\u0105czenia (0-RTT, w oko\u0142o 75% przypadk\u00f3w dane mo\u017cna przesy\u0142a\u0107 natychmiast po wys\u0142aniu pakietu ustanowienia po\u0142\u0105czenia) oraz zapewnienie minimalnych op\u00f3\u017anie\u0144 mi\u0119dzy wys\u0142aniem \u017c\u0105dania a otrzymaniem odpowiedzi (RTT, Round Trip Time);\n<\/li>\n<li class=\"l\"> Nie u\u017cywanie tego samego numeru sekwencji podczas ponownej transmisji pakietu, co pozwala unikn\u0105\u0107 dwuznaczno\u015bci przy okre\u015blaniu odebranych pakiet\u00f3w i wyeliminowa\u0107 op\u00f3\u017anienia;\n<\/li>\n<li class=\"l\"> Utrata pakietu wp\u0142ywa na dostarczanie tylko powi\u0105zanego z nim strumienia i nie zatrzymuje dostarczania danych w r\u00f3wnolegle przesy\u0142anych strumieniach przez bie\u017c\u0105ce po\u0142\u0105czenie;\n<\/li>\n<li class=\"l\"> \u015arodki korekcji b\u0142\u0119d\u00f3w, minimalizuj\u0105ce op\u00f3\u017anienia spowodowane ponown\u0105 transmisj\u0105 zagubionych pakiet\u00f3w. Wykorzystanie specjalnych kod\u00f3w korekcji b\u0142\u0119d\u00f3w na poziomie pakiet\u00f3w w celu zmniejszenia liczby sytuacji wymagaj\u0105cych ponownej transmisji danych zagubionego pakietu.\n<\/li>\n<li class=\"l\"> Granice blok\u00f3w kryptograficznych s\u0105 wyr\u00f3wnane z granicami pakiet\u00f3w QUIC, co zmniejsza wp\u0142yw utraty pakiet\u00f3w na dekodowanie zawarto\u015bci nast\u0119pnych pakiet\u00f3w;\n<\/li>\n<li class=\"l\"> Brak problem\u00f3w z blokowaniem kolejek TCP;\n<\/li>\n<li class=\"l\"> Wsparcie dla identyfikatora po\u0142\u0105czenia, co pozwala skr\u00f3ci\u0107 czas na ponowne nawi\u0105zanie po\u0142\u0105czenia dla klient\u00f3w mobilnych;\n<\/li>\n<li class=\"l\"> Mo\u017cliwo\u015b\u0107 pod\u0142\u0105czenia rozszerzonych mechanizm\u00f3w kontroli przeci\u0105\u017cenia po\u0142\u0105czenia;\n<\/li>\n<li class=\"l\"> Wykorzystanie techniki prognozowania przepustowo\u015bci w ka\u017cdym kierunku, aby zapewni\u0107 optymaln\u0105 intensywno\u015b\u0107 wysy\u0142ania pakiet\u00f3w, zapobiegaj\u0105c wpadni\u0119ciu w stan przeci\u0105\u017cenia, w kt\u00f3rym wyst\u0119puje utrata pakiet\u00f3w;\n<\/li>\n<li class=\"l\">  Wyra\u017any <noindex><a rel=\"nofollow\" href=\"http:\/\/web.cs.wpi.edu\/~claypool\/ms\/quic\/quic-thesis.pdf\">wzrost<\/a><\/noindex> wydajno\u015bci i przepustowo\u015bci w por\u00f3wnaniu z TCP. Dla serwis\u00f3w wideo, takich jak YouTube, zastosowanie QUIC wykaza\u0142o zmniejszenie operacji ponownego buforowania podczas ogl\u0105dania wideo o 30%.\n<\/ul>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>\u0179r\u00f3d\u0142o: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51807\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412 \u043d\u043e\u0447\u043d\u044b\u0435 \u0441\u0431\u043e\u0440\u043a\u0438 Firefox, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043b\u044f\u0433\u0443\u0442 \u0432 \u043e\u0441\u043d\u043e\u0432\u0443 \u0432\u044b\u043f\u0443\u0441\u043a\u0430 Firefox 72, \u0437\u0430\u043f\u043b\u0430\u043d\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0433\u043e \u043d\u0430 7 \u044f\u043d\u0432\u0430\u0440\u044f, \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. \u041f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e HTTP\/3 \u043e\u0442\u043a\u043b\u044e\u0447\u0451\u043d \u0438 \u0442\u0440\u0435\u0431\u0443\u0435\u0442 \u0430\u043a\u0442\u0438\u0432\u0430\u0446\u0438\u0438 \u043e\u043f\u0446\u0438\u0438 &#171;network.http.http3.enabled&#187; \u0432 about:config. \u041f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0430 HTTP\/3 \u0432 Firefox \u043e\u0441\u043d\u043e\u0432\u0430\u043d\u0430 \u043d\u0430 \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0435\u043c\u043e\u043c \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0435\u0439 Mozilla \u043f\u0440\u043e\u0435\u043a\u0442\u0435 neqo, \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u044e\u0449\u0435\u043c \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044e \u043a\u043b\u0438\u0435\u043d\u0442\u0430 \u0438 \u0441\u0435\u0440\u0432\u0435\u0440\u0430 \u0434\u043b\u044f \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 QUIC. \u041a\u043e\u0434 \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u043e\u0432 \u0434\u043b\u044f \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0438 HTTP\/3 \u0438 [&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-52244","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0412 \u043d\u043e\u0447\u043d\u044b\u0435 \u0441\u0431\u043e\u0440\u043a\u0438 Firefox, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043b\u044f\u0433\u0443\u0442 \u0432 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