{"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\/hr\/blog\/news\/v-nochnyh-sborkah-firefox-poyavilas-podderzhka-http-3","title":{"rendered":"U no\u0107nim gradnjama Firefoxa uvedena je podr\u0161ka za HTTP\/3","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>U <noindex><a rel=\"nofollow\" href=\"https:\/\/www.mozilla.org\/en-US\/firefox\/channel\/desktop\/#nightly\">no\u0107ne verzije<\/a><\/noindex>  Firefox, koji \u0107e \u010diniti osnovu za izdanje Firefoxa 72, planirano za 7. sije\u010dnja, <noindex><a rel=\"nofollow\" href=\"https:\/\/bugzilla.mozilla.org\/show_bug.cgi?id=1581637\">dodana<\/a><\/noindex> podr\u0161ka za protokol HTTP\/3. Zadano je da je HTTP\/3 isklju\u010den i zahtijeva aktivaciju opcije &#171;network.http.http3.enabled&#187; u about:config. <\/p>\n<p>Podr\u0161ka za HTTP\/3 u Firefoxu temelji se na projektu koji razvija kompanija Mozilla <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/mozilla\/neqo\">neqo<\/a><\/noindex>, koji pru\u017ea implementaciju klijenta i poslu\u017eitelja za protokol QUIC. Kod komponenti za podr\u0161ku HTTP\/3 i QUIC napisan je na jeziku Rust.<br \/>\nIz klijentskog softvera eksperimentalna podr\u0161ka za HTTP\/3 tako\u0111er ve\u0107  <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51526\">dodana<\/a><\/noindex> u Chromeu i curl-u, a za poslu\u017eitelje dostupna je u obliku  <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/cloudflare\/quiche\/tree\/master\/extras\/nginx\">modula<\/a><\/noindex> za nginx i <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/cloudflare\/quiche\/blob\/master\/examples\/http3-server.rs\">testnog poslu\u017eitelja<\/a><\/noindex> temeljenog na knji\u017enici <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\">implementacija<\/a><\/noindex>  QUIC i HTTP\/3 na jeziku Rust od strane kompanije Cloudflare). Za provjeru rada klijenata HTTP\/3 <noindex><a rel=\"nofollow\" href=\"https:\/\/bagder.github.io\/HTTP3-test\/\">pokrenuto je<\/a><\/noindex> nekoliko testnih web stranica, ve\u0107ina kojih za sada se ispravno ne otvara u Firefoxe (HTTP\/3 je u fazi <noindex><a rel=\"nofollow\" href=\"https:\/\/datatracker.ietf.org\/doc\/draft-ietf-quic-http\/\">skica specifikacije<\/a><\/noindex> i nije kona\u010dno standardiziran).<\/p>\n<p>Podsjetimo da HTTP\/3 standardizira kori\u0161tenje protokola QUIC kao transporta za HTTP\/2. Protokol <noindex><a rel=\"nofollow\" href=\"https:\/\/www.chromium.org\/quic\/\">QUIC<\/a><\/noindex> (Quick UDP Internet Connections) razvija se od 2013. godine od strane Google-a kao alternativa vezi TCP+TLS za web, rije\u0161avaju\u0107i probleme s dugim vremenom uspostave i dogovora veza u TCP-u te uklanjaju\u0107i ka\u0161njenja prilikom gubitka paketa tijekom prijenosa podataka. QUIC je nadogradnja na UDP protokol, koja podr\u017eava multiplexiranje vi\u0161e veza i pru\u017ea metode \u0161ifriranja ekvivalentne TLS\/SSL-u. <\/p>\n<p>Glavne <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.google.com\/document\/d\/1lmL9EF6qKrk7gbazY8bIdvq3Pno2Xj_l_YShP40GLQE\/preview?sle=true#\">karakteristike<\/a><\/noindex> QUIC:\n<\/p>\n<ul>\n<li class=\"l\"> Visoka sigurnost, sli\u010dna TLS-u (u su\u0161tini QUIC pru\u017ea mogu\u0107nost kori\u0161tenja TLS-a preko UDP-a);\n<\/li>\n<li class=\"l\"> Kontrola cjelovitosti toka, koja sprje\u010dava gubitak paketa;\n<\/li>\n<li class=\"l\"> Mogu\u0107nost trenutnog uspostavljanja veze (0-RTT, u otprilike 75% slu\u010dajeva podaci se mogu prenositi odmah nakon slanja paketa za uspostavljanje veze) i osiguranje minimalnih ka\u0161njenja izme\u0111u slanja zahtjeva i primanja odgovora (RTT, Round Trip Time);\n<\/li>\n<li class=\"l\"> Nedavanje istog broja sekvencijskog paketa pri ponovnom slanju, \u0161to omogu\u0107ava izbjegavanje nejasno\u0107a pri odre\u0111ivanju primljenih paketa i uklanjanje vremenskih prekida;\n<\/li>\n<li class=\"l\"> Gubitak paketa utje\u010de samo na isporuku povezane struje i ne zaustavlja isporuku podataka u paralelno prijenosima kroz trenutno uspostavljene struje;\n<\/li>\n<li class=\"l\"> Sredstva za ispravak gre\u0161aka, koja minimiziraju ka\u0161njenja uzrokovana ponovnim slanjem izgubljenih paketa. Kori\u0161tenje specijalnih kodova za ispravak gre\u0161aka na razini paketa za smanjenje situacija koje zahtijevaju ponovno slanje podataka izgubljenog paketa.\n<\/li>\n<li class=\"l\"> Granice kriptografskih blokova su poravnate s granicama QUIC paketa, \u0161to smanjuje utjecaj gubitaka paketa na dekodiranje sadr\u017eaja sljede\u0107ih paketa;\n<\/li>\n<li class=\"l\"> Nema problema s blokiranjem TCP reda;\n<\/li>\n<li class=\"l\"> Podr\u0161ka za identifikator veze, koji omogu\u0107ava smanjenje vremena potrebnog za ponovnu uspostavu veze za mobilne klijente;\n<\/li>\n<li class=\"l\"> Mogu\u0107nost povezivanja s pro\u0161irenim mehanizmima kontrole optere\u0107enja veze;\n<\/li>\n<li class=\"l\"> Kori\u0161tenje tehnike predvi\u0111anja propusnosti u svakom smjeru za osiguranje optimalne intenziteta slanja paketa, sprje\u010davaju\u0107i povratak u stanje preoptere\u0107enja u kojem se primje\u0107uje gubitak paketa;\n<\/li>\n<li class=\"l\">  Zna\u010dajan <noindex><a rel=\"nofollow\" href=\"http:\/\/web.cs.wpi.edu\/~claypool\/ms\/quic\/quic-thesis.pdf\">porast<\/a><\/noindex> performansi i propusnosti, u usporedbi s TCP-om. Za video servise poput YouTube-a, uporaba QUIC-a pokazala je smanjenje ponovnog punjenja prilikom reprodukcije videa za 30%.\n<\/ul>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Izvor: <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 5.0.4 - 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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