![\"Protokolli](\"\/wp-content\/uploads\/2022\/06\/0821fd634337ac1f1cc0924abb4f55dc.jpg\")
<\/center> <\/p>\nAktualisht mb\u00ebshtetja p\u00ebr QUIC dhe HTTP\/3.0 \u00ebsht\u00eb e realizuar tashm\u00eb n\u00eb t\u00eb gjith\u00eb shfletuesit e njohur (n\u00eb Chrome, Firefox dhe Edge, mb\u00ebshtetje p\u00ebr HTTP\/3 \u00ebsht\u00eb e aktivizuar si standard, nd\u00ebrsa n\u00eb Safari k\u00ebrkon aktivizimin e cil\u00ebsimit \"Advanced > Experimental Features > HTTP\/3\"). Nga ana e serverit, implementimet e HTTP\/3 jan\u00eb t\u00eb disponueshme p\u00ebr nginx (n\u00eb nj\u00eb deg\u00eb t\u00eb ve\u00e7ant\u00eb dhe n\u00eb form\u00ebn e nj\u00eb moduli t\u00eb ve\u00e7ant\u00eb), Caddy, IIS dhe LiteSpeed. Mb\u00ebshtetje p\u00ebr HTTP\/3 ofron gjithashtu rrjeti i shp\u00ebrndarjes s\u00eb p\u00ebrmbajtjes Cloudflare. <\/p>\n
Karakteristikat kryesore t\u00eb QUIC: <\/p>\n
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- Siguri e lart\u00eb, e ngjashme me TLS (n\u00eb thelb QUIC ofron mund\u00ebsin\u00eb e p\u00ebrdorimit t\u00eb TLS mbi UDP); <\/li>\n
- Kontrolli mbi integritetin e rrjedh\u00ebs, q\u00eb parandalon humbjen e pacakove; <\/li>\n
- Mund\u00ebsia p\u00ebr t\u00eb vendosur menj\u00ebher\u00eb nj\u00eb lidhje (0-RTT, n\u00eb rreth 75% t\u00eb rasteve t\u00eb dh\u00ebnat mund t\u00eb transmetohen menj\u00ebher\u00eb pas d\u00ebrgimit t\u00eb paket\u00ebs s\u00eb vendosjes s\u00eb lidhjes) dhe p\u00ebr t\u00eb siguruar vonesa minimale midis d\u00ebrgimit t\u00eb k\u00ebrkes\u00ebs dhe marrjes s\u00eb p\u00ebrgjigjes (RTT, Round Trip Time);
![\"Protokolli](\"\/wp-content\/uploads\/2022\/06\/d416668e500fd2b79304fa0b13f793e3.jpg\")
<\/center> <\/li>\n- P\u00ebrdorimi i nj\u00eb numri tjet\u00ebr sekonda p\u00ebr d\u00ebrgimin e paketave p\u00ebrs\u00ebrit\u00ebse, gj\u00eb q\u00eb lejon shmangien e dyshimeve n\u00eb p\u00ebrcaktimin e paketave t\u00eb pranuara dhe eliminon vonesat; <\/li>\n
- Humorja e paket\u00ebs ndikon vet\u00ebm n\u00eb d\u00ebrges\u00ebn e fluksit lidhur me t\u00eb dhe nuk ndalon d\u00ebrgimin e t\u00eb dh\u00ebnave n\u00eb flukset q\u00eb d\u00ebrgohen paralelisht n\u00ebp\u00ebrmjet lidhjes aktuale; <\/li>\n
- Mjetet p\u00ebr korrigjimin e gabimeve, q\u00eb minimizojn\u00eb vonesat p\u00ebr shkak t\u00eb d\u00ebrgimit p\u00ebrs\u00ebrit\u00ebs t\u00eb paketave t\u00eb humbura. P\u00ebrdorimi i kodeve speciale p\u00ebr korrigjimin e gabimeve n\u00eb nivelin e paket\u00ebs p\u00ebr t\u00eb reduktuar situatat q\u00eb k\u00ebrkojn\u00eb d\u00ebrgim p\u00ebrs\u00ebrit\u00ebs t\u00eb t\u00eb dh\u00ebnave t\u00eb paket\u00ebs s\u00eb humbur. <\/li>\n
- Kufijt\u00eb e bllokave kriptografik\u00eb jan\u00eb p\u00ebrputhur me kufijt\u00eb e paketave QUIC, duke zvog\u00ebluar ndikimin e humbjeve t\u00eb paketave n\u00eb dekodimin e p\u00ebrmbajtjes s\u00eb paketave t\u00eb ardhshme; <\/li>\n
- Mungesa e problemeve me bllokimin e radh\u00ebs TCP; <\/li>\n
- Mb\u00ebshtetje p\u00ebr identifikuesin e lidhjes, q\u00eb lejon zvog\u00eblimin e koh\u00ebs p\u00ebr vendosjen e lidhjes p\u00ebrs\u00ebrit\u00ebse p\u00ebr klient\u00ebt mobil\u00eb; <\/li>\n
- Mund\u00ebsia e lidhjes s\u00eb mekanizmave t\u00eb zgjeruar t\u00eb kontrollit t\u00eb ngarkes\u00ebs s\u00eb lidhjes; <\/li>\n
- P\u00ebrdorimi i teknikave t\u00eb parashikimit t\u00eb kapacitetit n\u00eb \u00e7do drejtim p\u00ebr t\u00eb siguruar intensitetin optimal t\u00eb d\u00ebrgimit t\u00eb paketave, duke parandaluar r\u00ebnien n\u00eb nj\u00eb gjendje ngarkese, ku humbjet e paketave v\u00ebrehen; <\/li>\n
- Rritje e dukshme e performanc\u00ebs dhe kapacitetit krahasuar me TCP. P\u00ebr sh\u00ebrbimet video si YouTube, aplikimi i QUIC ka treguar nj\u00eb reduktim prej 30% t\u00eb operacioneve t\u00eb ri-buffering gjat\u00eb shikimit t\u00eb videove. <\/ul>\n
Nga ndryshimet n\u00eb specifikimin HTTP\/1.1 mund t\u00eb theksohet ndalimi i p\u00ebrdorimit t\u00eb ve\u00e7ant\u00eb t\u00eb simbolit t\u00eb kthimit t\u00eb karik\u00ebs (CR) jasht\u00eb trupit t\u00eb p\u00ebrmbajtjes, dmth, n\u00eb elementet e protokollit simboli CR mund t\u00eb p\u00ebrdoret vet\u00ebm s\u00eb bashku me simbolin e kthimit t\u00eb rreshtit (CRLF). Algoritmi i p\u00ebrb\u00ebrjes s\u00eb k\u00ebrkesave chunked \u00ebsht\u00eb p\u00ebrmir\u00ebsuar p\u00ebr t\u00eb thjeshtuar ndarjen e fushave t\u00eb lidhura dhe seksionit me tituj. Jan\u00eb shtuar rekomandime p\u00ebr trajtimin e p\u00ebrmbajtjes ambiguo p\u00ebr t\u00eb bllokuar sulmet e klas\u00ebs \"HTTP Request Smuggling\", q\u00eb lejojn\u00eb infiltrimin n\u00eb p\u00ebrmbajtjen e k\u00ebrkesave t\u00eb p\u00ebrdoruesve t\u00eb tjer\u00eb n\u00eb rrjedh\u00ebn mes front-end dhe back-end. <\/p>\n