{"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\/fr\/blog\/news\/v-nochnyh-sborkah-firefox-poyavilas-podderzhka-http-3","title":{"rendered":"Les versions nocturnes de Firefox ont ajout\u00e9 le support de HTTP\/3.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Dans <noindex><a rel=\"nofollow\" href=\"https:\/\/www.mozilla.org\/en-US\/firefox\/channel\/desktop\/#nightly\">versions nocturnes<\/a><\/noindex>  Firefox, qui fera partie de la version 72 pr\u00e9vue pour le 7 janvier, <noindex><a rel=\"nofollow\" href=\"https:\/\/bugzilla.mozilla.org\/show_bug.cgi?id=1581637\">ajout\u00e9<\/a><\/noindex> prise en charge du protocole HTTP\/3. Par d\u00e9faut, HTTP\/3 est d\u00e9sactiv\u00e9 et n\u00e9cessite l'activation de l'option &#171;network.http.http3.enabled&#187; dans about:config. <\/p>\n<p>La prise en charge de HTTP\/3 dans Firefox est bas\u00e9e sur un projet d\u00e9velopp\u00e9 par Mozilla <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/mozilla\/neqo\">neqo<\/a><\/noindex>, fournissant une impl\u00e9mentation pour le client et le serveur du protocole QUIC. Le code des composants pour la prise en charge de HTTP\/3 et QUIC est \u00e9crit en Rust.<br \/>\nDans le logiciel client, la prise en charge exp\u00e9rimentale de HTTP\/3 est d\u00e9j\u00e0  <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51526\">ajout\u00e9<\/a><\/noindex> pr\u00e9sente dans Chrome et curl, et pour les serveurs, elle est disponible sous la forme  <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/cloudflare\/quiche\/tree\/master\/extras\/nginx\">du module<\/a><\/noindex> pour nginx et <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/cloudflare\/quiche\/blob\/master\/examples\/http3-server.rs\">un serveur de test<\/a><\/noindex> bas\u00e9 sur la biblioth\u00e8que <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\">impl\u00e9mentation<\/a><\/noindex>  QUIC et HTTP\/3 en Rust d\u00e9velopp\u00e9e par Cloudflare). Pour v\u00e9rifier le fonctionnement des clients HTTP\/3, <noindex><a rel=\"nofollow\" href=\"https:\/\/bagder.github.io\/HTTP3-test\/\">plusieurs sites de test ont \u00e9t\u00e9 lanc\u00e9s, dont la majorit\u00e9 ne s'ouvre pas encore correctement dans Firefox (HTTP\/3 est en phase<\/a><\/noindex> de brouillon de sp\u00e9cification <noindex><a rel=\"nofollow\" href=\"https:\/\/datatracker.ietf.org\/doc\/draft-ietf-quic-http\/\">et n'est pas encore finalis\u00e9).<\/a><\/noindex> Dans les versions nocturnes de Firefox, qui feront partie de la version 72 pr\u00e9vue pour le 7 janvier.<\/p>\n<p>Rappelons que HTTP\/3 standardise l'utilisation du protocole QUIC en tant que transport pour HTTP\/2. Le protocole <noindex><a rel=\"nofollow\" href=\"https:\/\/www.chromium.org\/quic\/\">QUIC<\/a><\/noindex> (Quick UDP Internet Connections) est d\u00e9velopp\u00e9 par Google depuis 2013 comme une alternative \u00e0 la combinaison TCP+TLS pour le Web, r\u00e9solvant les probl\u00e8mes de latence dans l'\u00e9tablissement et l'accord des connexions TCP et \u00e9liminant les retards dus aux pertes de paquets pendant le transfert de donn\u00e9es. QUIC repr\u00e9sente une couche au-dessus du protocole UDP, prenant en charge le multiplexage de plusieurs connexions et fournissant des m\u00e9thodes de cryptage \u00e9quivalentes \u00e0 TLS\/SSL. <\/p>\n<p>Principales <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.google.com\/document\/d\/1lmL9EF6qKrk7gbazY8bIdvq3Pno2Xj_l_YShP40GLQE\/preview?sle=true#\">caract\u00e9ristiques<\/a><\/noindex> QUIC :\n<\/p>\n<ul>\n<li class=\"l\"> Haute s\u00e9curit\u00e9, similaire \u00e0 TLS (en substance, QUIC permet d'utiliser TLS sur UDP) ;\n<\/li>\n<li class=\"l\"> Contr\u00f4le de l'int\u00e9grit\u00e9 du flux, emp\u00eachant la perte de paquets ;\n<\/li>\n<li class=\"l\"> Possibilit\u00e9 d'\u00e9tablir une connexion instantan\u00e9ment (0-RTT, dans environ 75% des cas les donn\u00e9es peuvent \u00eatre transmises imm\u00e9diatement apr\u00e8s l'envoi du paquet d'\u00e9tablissement de connexion) et de garantir des d\u00e9lais minimaux entre l'envoi de la demande et la r\u00e9ception de la r\u00e9ponse (RTT, Round Trip Time) ;\n<\/li>\n<li class=\"l\"> Non-utilisation lors de la retransmission d'un paquet du m\u00eame num\u00e9ro de s\u00e9quence, permettant d'\u00e9viter toute ambigu\u00eft\u00e9 lors de la d\u00e9termination des paquets re\u00e7us et d'\u00e9liminer les d\u00e9lais d'attente ;\n<\/li>\n<li class=\"l\"> La perte d'un paquet n'affecte que la livraison du flux qui lui est associ\u00e9 et ne bloque pas la livraison des donn\u00e9es dans les flux simultan\u00e9ment transmis via la connexion actuelle ;\n<\/li>\n<li class=\"l\"> Les m\u00e9canismes de correction d'erreurs r\u00e9duisent les d\u00e9lais dus \u00e0 la retransmission des paquets perdus. L'utilisation de codes sp\u00e9cifiques de correction d'erreurs au niveau du paquet permet de r\u00e9duire les situations n\u00e9cessitant la retransmission des donn\u00e9es d'un paquet perdu.\n<\/li>\n<li class=\"l\"> Les limites des blocs cryptographiques sont align\u00e9es sur les limites des paquets QUIC, ce qui r\u00e9duit l'impact des pertes de paquets sur le d\u00e9codage du contenu des paquets suivants ;\n<\/li>\n<li class=\"l\"> Absence de probl\u00e8mes de blocage de la queue TCP.\n<\/li>\n<li class=\"l\"> Support de l'identifiant de connexion, permettant de r\u00e9duire le temps d'\u00e9tablissement d'une reconnexion pour les clients mobiles.\n<\/li>\n<li class=\"l\"> Capacit\u00e9 \u00e0 se connecter \u00e0 des m\u00e9canismes avanc\u00e9s de contr\u00f4le de congestion.\n<\/li>\n<li class=\"l\"> Utilisation de techniques de pr\u00e9vision de bande passante dans chaque direction pour garantir une intensit\u00e9 d'envoi optimale des paquets, emp\u00eachant un glissement vers un \u00e9tat de congestion, o\u00f9 des pertes de paquets sont observ\u00e9es.\n<\/li>\n<li class=\"l\">  Une augmentation <noindex><a rel=\"nofollow\" href=\"http:\/\/web.cs.wpi.edu\/~claypool\/ms\/quic\/quic-thesis.pdf\">remarquable<\/a><\/noindex> de performance et de bande passante par rapport \u00e0 TCP. Pour les services vid\u00e9o tels que YouTube, l'application de QUIC a montr\u00e9 une r\u00e9duction de 30% des op\u00e9rations de re-buffering lors du visionnage de vid\u00e9os.\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=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 5.0.2 - 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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