{"id":79868,"date":"2020-05-01T07:42:17","date_gmt":"2020-05-01T05:42:17","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/microsoft-otkryl-svoyu-realizacziyu-protokola-quic-primenyaemogo-v-http-3"},"modified":"2020-05-01T07:42:17","modified_gmt":"2020-05-01T05:42:17","slug":"microsoft-otkryl-svoyu-realizacziyu-protokola-quic-primenyaemogo-v-http-3","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/news\/microsoft-otkryl-svoyu-realizacziyu-protokola-quic-primenyaemogo-v-http-3","title":{"rendered":"Microsoft on avanud oma QUIC-protokolli rakenduse, mida kasutatakse HTTP\/3-is","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Microsoft <noindex><a rel=\"nofollow\" href=\"https:\/\/techcommunity.microsoft.com\/t5\/networking-blog\/msquic-is-open-source\/ba-p\/1345441\">teatas<\/a><\/noindex> raamatukogu koodi avamise kohta <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/microsoft\/msquic\">MsQuic<\/a><\/noindex> v\u00f5rguprotokolli rakendamisest <noindex><a rel=\"nofollow\" href=\"https:\/\/tools.ietf.org\/html\/draft-ietf-quic-transport\">QUIC<\/a><\/noindex>. Kood on kirjutatud C keeles ja <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/microsoft\/msquic\">levitatakse<\/a><\/noindex> ilma Microsofti litsentsita. Raamatukogu on platvormidevaheline ja seda saab kasutada mitte ainult Windowsis, vaid ka Linuxis, kasutades <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.microsoft.com\/en-us\/windows\/win32\/com\/schannel\">Schannel<\/a><\/noindex> v\u00f5i OpenSSL-i TLS 1.3 jaoks. Tulevikus on plaanis toetada ka teisi platvorme.<\/p>\n<p>Raamatukogu p\u00f5hineb msquic.sys draiveri koodil, mis on saadaval Windows 10 tuumas (Insider Preview) HTTP ja <noindex><a rel=\"nofollow\" href=\"https:\/\/techcommunity.microsoft.com\/t5\/itops-talk-blog\/smb-over-quic-files-without-the-vpn\/ba-p\/1183449\">SMB<\/a><\/noindex> QUIC-i peal. Sealhulgas kasutatakse koodi HTTP\/3 rakendamiseks Windowsi sisesteks protokollideks ja .NET Core'is. MsQuic'i arendust\u00f6\u00f6d toimuvad t\u00e4ielikult GitHubis, kasutades avalikku \u00fclevaatust, pull-p\u00e4ringuid ja GitHub Issues. On loodud infrastruktuur, mis kontrollib iga commit'i ja pull-p\u00e4ringut enam kui 4000 testide komplekti kaudu. P\u00e4rast arenduskeskkonna stabiliseerimist on plaanis aksepteerida muudatusi v\u00e4listelt arendajatelt.<\/p>\n<p>MsQuic on juba kasutatav serverite ja klientide loomiseks, kuid mitte k\u00f5ik IETF spetsifikatsioonis m\u00e4\u00e4ratletud funktsioonid on praegu saadaval. N\u00e4iteks puudub hetkel 0-RTT, klientide migratsiooni, Path MTU Discovery ja serveripoolse aadressi valiku haldamise tugi (Server Preferred Address). Rakendatud omaduste seas on m\u00e4rgitav optimeerimine maksimaalse l\u00e4bilaskev\u00f5ime ja minimaalsete viiviste saavutamiseks, as\u00fcnkroonne sisend-\/v\u00e4ljundtoimingute tugi, RSS (Receive Side Scaling) ja v\u00f5imalus \u00fchendada sissetulevad ja v\u00e4ljund UDP vood. MsQuic'i rakenduse \u00fchilduvust on testitud Chrome'i ja Edge'i eksperimentaalsete harudega.<\/p>\n<p>Tuletame meelde, et HTTP\/3 standardiseerib QUIC protokolli kasutamise transpordina HTTP\/2 jaoks. Protokoll <noindex><a rel=\"nofollow\" href=\"https:\/\/www.chromium.org\/quic\/\">QUIC<\/a><\/noindex> (Quick UDP Internet Connections) areneb alates 2013. aastast Google'i poolt alternatiivina TCP+TLS \u00fchenduse jaoks, lahendades TCP pika \u00fchenduse loomise ja kokku leppimise probleemid ning k\u00f5rvaldab pakettide kadumise t\u00f5ttu tekkivad viivitused andmete edastamise protsessis. QUIC on UDP protokolli peal olev lisakiht, mis toetab mitme \u00fchenduse mitmekordistamist ja pakub kr\u00fcpteerimismeetodeid, mis on v\u00f5rdsed TLS\/SSL-iga. <\/p>\n<p>Peamised <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.google.com\/document\/d\/1lmL9EF6qKrk7gbazY8bIdvq3Pno2Xj_l_YShP40GLQE\/preview?sle=true#\">omadused<\/a><\/noindex> QUIC:\n<\/p>\n<ul>\n<li class=\"l\"> K\u00f5rge turvalisus, mis on sarnane TLS-iga (sisuliselt v\u00f5imaldab QUIC kasutada TLS 1.3 \u00fcle UDP);\n<\/li>\n<li class=\"l\"> Voolu terviklikkuse j\u00e4lgimine, mis takistab pakettide kaotust;\n<\/li>\n<li class=\"l\"> V\u00f5ime koheselt \u00fchendust luua (0-RTT, umbes 75% juhtudest saab andmeid edastada kohe p\u00e4rast \u00fchenduse loomise paketi saatmist) ja tagada minimaalne viivitus k\u00fcsimise ja vastuse saamise vahel (RTT, Round Trip Time);<br \/>\n<center><noindex><a rel=\"nofollow\" href=\"https:\/\/lh3.googleusercontent.com\/o62Ohn1Ppxna6zz0NtavqRyetjryOj-81Sz4bRt3U8lURVblk5RKOaCcf57i6BkmprremePJpq_sQcxfJiuA4wJBmRp3pR4BS1P-yiT6UNUPvnBeP_rLz9bvHxFE15kuNBM2hpE?a.png\"><img decoding=\"async\" alt=\"Microsoft on avanud oma QUIC-protokolli rakenduse, mida kasutatakse HTTP\/3-is\" src=\"\/wp-content\/uploads\/2020\/05\/1cdf7d0f9fe23fbbdc72416d51adebfe.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><\/center><\/p>\n<\/li>\n<li class=\"l\"> Paketi sama j\u00e4rjestuse numbri uuesti edastamisel mittekasutamine, mis v\u00f5imaldab v\u00e4ltida segadust vastuv\u00f5etud pakettide m\u00e4\u00e4ratlemisel ja kaotada aegumised;\n<\/li>\n<li class=\"l\"> Paketi kaotus m\u00f5jutab ainult selle kaasnevat voolu ja ei peata andmete edastamist samaaegselt praeguse \u00fchenduse kaudu edastatavatest voogudest;\n<\/li>\n<li class=\"l\"> Vigade parandusmeetmed, mis minimeerivad viivitusi kadunud pakettide uuesti edastamise t\u00f5ttu. Eriliste vigade parandamise koodide kasutamine paketi tasemel, et v\u00e4hendada olukordi, mis n\u00f5uavad kadunud paketi andmete uuesti edastamist.\n<\/li>\n<li class=\"l\"> Kr\u00fcptograafiliste plokkide piirid on joondatud QUIC pakettide piiridega, mis v\u00e4hendab pakettide kaotuse m\u00f5ju j\u00e4rgmiste pakettide sisu dekodeerimisele;\n<\/li>\n<li class=\"l\"> TCP j\u00e4rjekorra ummistumise probleemide puudumine;\n<\/li>\n<li class=\"l\"> \u00dchenduse identifikaatori tugi, mis v\u00f5imaldab v\u00e4hendada mobiilsete klientide uuesti \u00fchendamise aega;\n<\/li>\n<li class=\"l\"> V\u00f5ime \u00fchendada laienevaid \u00fchenduse \u00fclekande kontrolli mehhanisme;\n<\/li>\n<li class=\"l\"> Igas suunas l\u00e4bilaskev\u00f5ime ennustamise tehnika kasutamine, et tagada pakkide edastamise optimaalne intensiivsus, v\u00e4ltides \u00fcleminekuid koormuse seisundisse, kus esineb pakettide kaotust;\n<\/li>\n<li class=\"l\">  T\u00e4htis <noindex><a rel=\"nofollow\" href=\"http:\/\/web.cs.wpi.edu\/~claypool\/ms\/quic\/quic-thesis.pdf\">kasv<\/a><\/noindex> t\u00f5hususes ja l\u00e4bilaskev\u00f5imes v\u00f5rreldes TCP-ga. Videoteenuste, nagu YouTube, puhul n\u00e4itas QUIC kasutamine video vaatamise jooksul uuesti vahepealsete operatsioonide v\u00e4henemist 30% v\u00f5rra.\n<\/ul>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Allikas: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=52844\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Microsoft \u043e\u0431\u044a\u044f\u0432\u0438\u043b\u0430 \u043e\u0431 \u043e\u0442\u043a\u0440\u044b\u0442\u0438\u0438 \u043a\u043e\u0434\u0430 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 MsQuic \u0441 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0435\u0439 \u0441\u0435\u0442\u0435\u0432\u043e\u0433\u043e \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 QUIC. \u041a\u043e\u0434 \u043d\u0430\u043f\u0438\u0441\u0430\u043d \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 \u0421\u0438 \u0438 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u044f\u0435\u0442\u0441\u044f \u043f\u043e\u0434 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0435\u0439 MIT. \u0411\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0430 \u043a\u0440\u043e\u0441\u0441\u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u0435\u043d\u043d\u0430\u044f \u0438 \u043c\u043e\u0436\u0435\u0442 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c\u0441\u044f \u043d\u0435 \u0442\u043e\u043b\u044c\u043a\u043e \u0432 Windows, \u043d\u043e \u0438 \u0432 Linux \u0441 \u0437\u0430\u0434\u0435\u0439\u0441\u0442\u0432\u043e\u0432\u0430\u043d\u0438\u0435\u043c Schannel \u0438\u043b\u0438 OpenSSL \u0434\u043b\u044f TLS 1.3. \u0412 \u0434\u0430\u043b\u044c\u043d\u0435\u0439\u0448\u0435\u043c \u043f\u043b\u0430\u043d\u0438\u0440\u0443\u0435\u0442\u0441\u044f \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0430 \u0438 \u0434\u0440\u0443\u0433\u0438\u0445 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c. \u0411\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0430 \u043e\u0441\u043d\u043e\u0432\u0430\u043d\u0430 \u043d\u0430 \u043a\u043e\u0434\u0435 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":79869,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-79868","post","type-post","status-publish","format-standard","has-post-thumbnail","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=\"\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Microsoft \u043e\u0431\u044a\u044f\u0432\u0438\u043b\u0430 \u043e\u0431 \u043e\u0442\u043a\u0440\u044b\u0442\u0438\u0438 \u043a\u043e\u0434\u0430 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