{"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\/da\/blog\/news\/v-nochnyh-sborkah-firefox-poyavilas-podderzhka-http-3","title":{"rendered":"I n\u00e6tversionerne af Firefox er der tilf\u00f8jet st\u00f8tte til HTTP\/3","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>I <noindex><a rel=\"nofollow\" href=\"https:\/\/www.mozilla.org\/en-US\/firefox\/channel\/desktop\/#nightly\">nattebuilds<\/a><\/noindex>  Firefox, som vil danne grundlaget for udgivelsen af Firefox 72, planlagt til den 7. januar, <noindex><a rel=\"nofollow\" href=\"https:\/\/bugzilla.mozilla.org\/show_bug.cgi?id=1581637\">tilf\u00f8jet<\/a><\/noindex> underst\u00f8ttelse af HTTP\/3-protokollen. Som standard er HTTP\/3 deaktiveret og kr\u00e6ver aktivering af indstillingen &#171;network.http.http3.enabled&#187; i about:config. <\/p>\n<p>St\u00f8tten til HTTP\/3 i Firefox er baseret p\u00e5 et projekt udviklet af Mozilla, <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/mozilla\/neqo\">neqo<\/a><\/noindex>, som leverer en implementering af klient og server til QUIC-protokollen. Koden til komponenter for st\u00f8tte af HTTP\/3 og QUIC er skrevet i Rust.<br \/>\nEksperimentel st\u00f8tte for HTTP\/3 er ogs\u00e5 allerede tilg\u00e6ngelig i klientsoftware  <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51526\">tilf\u00f8jet<\/a><\/noindex> i Chrome og curl, og for servere er den tilg\u00e6ngelig i form af  <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/cloudflare\/quiche\/tree\/master\/extras\/nginx\">et modul<\/a><\/noindex> til nginx og <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/cloudflare\/quiche\/blob\/master\/examples\/http3-server.rs\">en testserver<\/a><\/noindex> baseret p\u00e5 biblioteket <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\">en implementering<\/a><\/noindex>  af QUIC og HTTP\/3 i Rust fra Cloudflare). For at teste HTTP\/3-klienters funktionalitet <noindex><a rel=\"nofollow\" href=\"https:\/\/bagder.github.io\/HTTP3-test\/\">er der startet<\/a><\/noindex> flere testsider, hvoraf de fleste endnu ikke \u00e5bnes korrekt i Firefox (HTTP\/3 er i en fase <noindex><a rel=\"nofollow\" href=\"https:\/\/datatracker.ietf.org\/doc\/draft-ietf-quic-http\/\">af udkastsspecifikation<\/a><\/noindex> og er ikke endeligt standardiseret).<\/p>\n<p>Det skal bem\u00e6rkes, at HTTP\/3 standardiserer brugen af PROTOKOLQUIC som transport for HTTP\/2. Protokollen <noindex><a rel=\"nofollow\" href=\"https:\/\/www.chromium.org\/quic\/\">QUIC<\/a><\/noindex> (Quick UDP Internet Connections) har v\u00e6ret i udvikling af Google siden 2013 som et alternativ til TCP+TLS for Web, der l\u00f8ser problemer med lang forbindelsesetablering og -forhandling i TCP og fjerner forsinkelser ved tab af pakker under dataoverf\u00f8rsel. QUIC er en overbygning over UDP-protokollen, der underst\u00f8tter multiplexing af flere forbindelser og tilbyder krypteringsmetoder, der svarer til TLS\/SSL. <\/p>\n<p>Vigtige <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.google.com\/document\/d\/1lmL9EF6qKrk7gbazY8bIdvq3Pno2Xj_l_YShP40GLQE\/preview?sle=true#\">funktioner<\/a><\/noindex> QUIC:\n<\/p>\n<ul>\n<li class=\"l\"> H\u00f8j sikkerhed svarende til TLS (faktisk giver QUIC mulighed for brug af TLS oven p\u00e5 UDP);\n<\/li>\n<li class=\"l\"> Overv\u00e5gning af str\u00f8mmens integritet, der forhindrer tab af pakker;\n<\/li>\n<li class=\"l\"> Mulighed for straks at etablere forbindelse (0-RTT, i ca. 75% af tilf\u00e6ldene kan data overf\u00f8res straks efter sending af forbindelsespakken) og sikre minimale forsinkelser mellem fremsendelse af anmodning og modtagelse af svar (RTT, Round Trip Time);\n<\/li>\n<li class=\"l\"> Undg\u00e5else af at bruge den samme sekvensnummer ved genoverf\u00f8rsel af pakken, hvilket forhindrer tvetydighed ved identifikation af modtagne pakker og eliminerer timeouts;\n<\/li>\n<li class=\"l\"> Pakketab p\u00e5virker kun leveringen af den tilknyttede str\u00f8m og stopper ikke dataoverf\u00f8rslen i parallelt overf\u00f8rte str\u00f8mme gennem den aktuelle forbindelse;\n<\/li>\n<li class=\"l\"> Fejlkorrektionsmidler, der minimerer forsinkelser p\u00e5 grund af genoverf\u00f8rsel af tabte pakker. Brug af specialiserede fejlkorrektionskoder p\u00e5 pakkeniveau for at reducere situationer, der kr\u00e6ver genoverf\u00f8rsel af data fra en tabt pakke.\n<\/li>\n<li class=\"l\"> Gr\u00e6nserne for kryptografiske blokke er justeret med gr\u00e6nserne for QUIC-pakker, hvilket reducerer tabspakkernes indvirkning p\u00e5 afkodningen af indholdet i efterf\u00f8lgende pakker;\n<\/li>\n<li class=\"l\"> Ingen problemer med TCP-k\u00f8blokering;\n<\/li>\n<li class=\"l\"> Underst\u00f8ttelse af forbindelsesidentifikatoren, der reducerer tiden til at etablere en genforbindelse for mobile klienter;\n<\/li>\n<li class=\"l\"> Mulighed for at tilslutte udvidede mekanismer til overv\u00e5gning af forbindelsesoverbelastning;\n<\/li>\n<li class=\"l\"> Brug af kapacitetsprognoseteknikker i hver retning for at sikre optimal intensitet i pakkeafsendelsen, hvilket forhindrer at glide ind i en overbelastningssituation, hvor pakkemister forekommer;\n<\/li>\n<li class=\"l\">  Bem\u00e6rkbar <noindex><a rel=\"nofollow\" href=\"http:\/\/web.cs.wpi.edu\/~claypool\/ms\/quic\/quic-thesis.pdf\">v\u00e6kst<\/a><\/noindex> i ydeevne og kapacitet sammenlignet med TCP. For videotjenester som YouTube har brugen af QUIC vist sig at reducere genbufferingsoperationer med 30% under videovisning.\n<\/ul>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Kilde: <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 5.0.3 - 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 \u043e\u0441\u043d\u043e\u0432\u0443 \u0432\u044b\u043f\u0443\u0441\u043a\u0430 Firefox 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