{"id":104306,"date":"2022-06-07T09:36:47","date_gmt":"2022-06-07T07:36:48","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/protokol-http-3-0-poluchil-status-predlozhennogo-standarta"},"modified":"2022-06-07T09:36:47","modified_gmt":"2022-06-07T07:36:48","slug":"protokol-http-3-0-poluchil-status-predlozhennogo-standarta","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/news\/protokol-http-3-0-poluchil-status-predlozhennogo-standarta","title":{"rendered":"Il protocollo HTTP\/3.0 ha ricevuto lo status di standard proposto.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>\u041a\u043e\u043c\u0438\u0442\u0435\u0442 IETF (Internet Engineering Task Force), \u0437\u0430\u043d\u0438\u043c\u0430\u044e\u0449\u0438\u0439\u0441\u044f \u0440\u0430\u0437\u0432\u0438\u0442\u0438\u0435\u043c \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u043e\u0432 \u0438 \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u044b \u0438\u043d\u0442\u0435\u0440\u043d\u0435\u0442\u0430, \u0437\u0430\u0432\u0435\u0440\u0448\u0438\u043b \u0444\u043e\u0440\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 RFC \u0434\u043b\u044f \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 HTTP\/3.0 \u0438 \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u044b\u0435 \u0441 \u043d\u0438\u043c \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0438 \u043f\u043e\u0434 \u0438\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440\u0430\u043c\u0438  RFC 9114 (\u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b) \u0438 RFC 9204 (\u0442\u0435\u0445\u043d\u043e\u043b\u043e\u0433\u0438\u044f \u0441\u0436\u0430\u0442\u0438\u0435 \u0437\u0430\u0433\u043e\u043b\u043e\u0432\u043a\u043e\u0432 QPACK \u0434\u043b\u044f HTTP\/3). \u0421\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u044f HTTP\/3.0 \u043f\u043e\u043b\u0443\u0447\u0438\u043b\u0430 \u0441\u0442\u0430\u0442\u0443\u0441 &#171;\u041f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d\u043d\u043e\u0433\u043e \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u0430&#187;, \u043f\u043e\u0441\u043b\u0435 \u0447\u0435\u0433\u043e \u043d\u0430\u0447\u043d\u0451\u0442\u0441\u044f \u0440\u0430\u0431\u043e\u0442\u0430 \u043f\u043e \u043f\u0440\u0438\u0434\u0430\u043d\u0438\u044e RFC \u0441\u0442\u0430\u0442\u0443\u0441\u0430 \u0447\u0435\u0440\u043d\u043e\u0432\u043e\u0433\u043e \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u0430 (Draft Standard), \u0444\u0430\u043a\u0442\u0438\u0447\u0435\u0441\u043a\u0438 \u043e\u0437\u043d\u0430\u0447\u0430\u044e\u0449\u0435\u0433\u043e \u043f\u043e\u043b\u043d\u0443\u044e \u0441\u0442\u0430\u0431\u0438\u043b\u0438\u0437\u0430\u0446\u0438\u044e \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 \u0438 \u0443\u0447\u0451\u0442 \u0432\u0441\u0435\u0445 \u0432\u044b\u0441\u043a\u0430\u0437\u0430\u043d\u043d\u044b\u0445 \u0437\u0430\u043c\u0435\u0447\u0430\u043d\u0438\u0439. \u041e\u0434\u043d\u043e\u0432\u0440\u0435\u043c\u0435\u043d\u043d\u043e \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u044b \u043e\u0431\u043d\u043e\u0432\u043b\u0451\u043d\u043d\u044b\u0435 \u0432\u0430\u0440\u0438\u0430\u043d\u0442\u044b \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0439 \u0434\u043b\u044f \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u043e\u0432 HTTP\/1.1 (RFC 9112) \u0438 HTTP\/2.0 (RFC 9113), \u0430 \u0442\u0430\u043a\u0436\u0435   \u0434\u043e\u043a\u0443\u043c\u0435\u043d\u0442\u044b, \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u044f\u044e\u0449\u0438\u0435 \u0441\u0435\u043c\u0430\u043d\u0442\u0438\u043a\u0443 HTTP-\u0437\u0430\u043f\u0440\u043e\u0441\u043e\u0432 (RFC 9110) \u0438 HTTP-\u0437\u0430\u0433\u043e\u043b\u043e\u0432\u043a\u0438 \u0443\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u043a\u044d\u0448\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435\u043c (RFC 9111).        <\/p>\n<p>Il protocollo HTTP\/3 definisce l'uso del protocollo QUIC (Quick UDP Internet Connections) come trasporto per HTTP\/2. QUIC \u00e8 un'estensione del protocollo UDP, che supporta il multiplexing di pi\u00f9 connessioni e fornisce metodi di crittografia equivalenti a TLS\/SSL. Il protocollo \u00e8 stato creato nel 2013 da Google come alternativa alla combinazione TCP+TLS per il Web, risolvendo problemi di elevata latenza nella creazione e negoziazione delle connessioni TCP e riducendo i ritardi in caso di perdita di pacchetti durante il trasferimento dei dati.     <center><img decoding=\"async\" alt=\"Il protocollo HTTP\/3.0 ha ricevuto lo status di standard proposto.\" src=\"\/wp-content\/uploads\/2022\/06\/0821fd634337ac1f1cc0924abb4f55dc.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/center>        <\/p>\n<p>\u0412 \u043d\u0430\u0441\u0442\u043e\u044f\u0449\u0435\u0435 \u0432\u0440\u0435\u043c\u044f \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0430 QUIC \u0438 HTTP\/3.0 \u0443\u0436\u0435 \u0440\u0435\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u043d\u0430 \u0432\u043e \u0432\u0441\u0435\u0445 \u043f\u043e\u043f\u0443\u043b\u044f\u0440\u043d\u044b\u0445 web-\u0431\u0440\u0430\u0443\u0437\u0435\u0440\u0430\u0445 (\u0432 Chrome, Firefox \u0438 Edge \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0430 HTTP\/3 \u0432\u043a\u043b\u044e\u0447\u0435\u043d\u0430 \u043f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e, \u0430 \u0432 Safari \u0442\u0440\u0435\u0431\u0443\u0435\u0442 \u0432\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u044f \u043d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u0438 &#171;Advanced &gt; Experimental Features &gt; HTTP\/3&#187;). \u041d\u0430 \u0441\u0435\u0440\u0432\u0435\u0440\u043d\u043e\u0439 \u0441\u0442\u043e\u0440\u043e\u043d\u0435 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 HTTP\/3 \u0434\u043e\u0441\u0442\u0443\u043f\u043d\u044b \u0434\u043b\u044f nginx (\u0432 \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u043e\u0439 \u0432\u0435\u0442\u043a\u0435 \u0438 \u0432 \u0444\u043e\u0440\u043c\u0435 \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u043e\u0433\u043e \u043c\u043e\u0434\u0443\u043b\u044f),  Caddy, IIS \u0438 LiteSpeed.  \u041f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0443 HTTP\/3 \u0442\u0430\u043a\u0436\u0435 \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0438\u0432\u0430\u0435\u0442 \u0441\u0435\u0442\u044c \u0434\u043e\u0441\u0442\u0430\u0432\u043a\u0438 \u043a\u043e\u043d\u0442\u0435\u043d\u0442\u0430 Cloudflare.     <\/p>\n<p>Caratteristiche principali di QUIC:  <\/p>\n<ul>\n<li class=\"l\"> Elevata sicurezza, simile a TLS (in sostanza, QUIC offre la possibilit\u00e0 di utilizzare TLS sopra UDP);  <\/li>\n<li class=\"l\"> Controllo dell'integrit\u00e0 del flusso, prevenendo la perdita di pacchetti;    <\/li>\n<li class=\"l\"> La possibilit\u00e0 di stabilire una connessione in modo istantaneo (0-RTT, in circa il 75% dei casi i dati possono essere trasmessi immediatamente dopo l'invio del pacchetto di stabilimento della connessione) e garantire latenze minime tra l'invio della richiesta e la ricezione della risposta (RTT, Round Trip Time);      <center><img decoding=\"async\" alt=\"Il protocollo HTTP\/3.0 ha ricevuto lo status di standard proposto.\" src=\"\/wp-content\/uploads\/2022\/06\/d416668e500fd2b79304fa0b13f793e3.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/center>        <\/li>\n<li class=\"l\"> Uso di un numero di sequenza diverso per la ritrasmissione di un pacchetto, consentendo di evitare ambiguit\u00e0 nella definizione dei pacchetti ricevuti e di eliminare i timeout;  <\/li>\n<li class=\"l\"> La perdita di pacchetti influisce solo sulla consegna del flusso correlato e non interrompe la consegna dei dati nei flussi trasmessi in parallelo attraverso la connessione attuale;    <\/li>\n<li class=\"l\"> Strumenti di correzione degli errori che minimizzano i ritardi causati dalla ritrasmissione dei pacchetti persi. Utilizzo di codici di correzione degli errori a livello di pacchetto per ridurre le situazioni che richiedono la ritrasmissione dei dati del pacchetto perso.   <\/li>\n<li class=\"l\"> I limiti dei blocchi crittografici sono allineati con i limiti dei pacchetti QUIC, riducendo l'impatto delle perdite di pacchetti sulla decodifica del contenuto dei pacchetti successivi;    <\/li>\n<li class=\"l\"> Assenza di problemi di blocco della coda TCP;    <\/li>\n<li class=\"l\"> Supporto dell'identificatore della connessione, che consente di ridurre il tempo per stabilire una connessione di ripristino per i clienti mobili;  <\/li>\n<li class=\"l\"> Possibilit\u00e0 di collegare meccanismi avanzati di controllo della congestione della connessione;  <\/li>\n<li class=\"l\"> L'uso di tecniche di previsione della capacit\u00e0 in ogni direzione per garantire un'intensit\u00e0 ottimale nell'invio dei pacchetti, evitando di scivolare in uno stato di sovraccarico in cui si verifica la perdita di pacchetti;    <\/li>\n<li class=\"l\">  Un notevole aumento delle prestazioni e della larghezza di banda rispetto al TCP. Per i servizi video, come YouTube, l'uso di QUIC ha mostrato una riduzione del 30% delle operazioni di buffering durante la visione di video.    <\/ul>\n<p>\u0418\u0437 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0439 \u0432 \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0438 HTTP\/1.1 \u043c\u043e\u0436\u043d\u043e \u043e\u0442\u043c\u0435\u0442\u0438\u0442\u044c \u0437\u0430\u043f\u0440\u0435\u0442 \u043d\u0430 \u043e\u0431\u043e\u0441\u043e\u0431\u043b\u0435\u043d\u043d\u043e\u0435 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0441\u0438\u043c\u0432\u043e\u043b\u0430 \u0432\u043e\u0437\u0432\u0440\u0430\u0442\u0430 \u043a\u0430\u0440\u0435\u0442\u043a\u0438 (CR) \u0432\u043d\u0435 \u0442\u0435\u043b\u0430 \u0441 \u0441\u043e\u0434\u0435\u0440\u0436\u0438\u043c\u044b\u043c, \u0442.\u0435. \u0432 \u044d\u043b\u0435\u043c\u0435\u043d\u0442\u0430\u0445 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 \u0441\u0438\u043c\u0432\u043e\u043b CR \u043c\u043e\u0436\u0435\u0442 \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0442\u044c\u0441\u044f \u0442\u043e\u043b\u044c\u043a\u043e \u0432\u043c\u0435\u0441\u0442\u0435 \u0441 \u0441\u0438\u043c\u0432\u043e\u043b\u043e\u043c \u043f\u0435\u0440\u0435\u0432\u043e\u0434\u0430 \u0441\u0442\u0440\u043e\u043a\u0438 (CRLF). \u0410\u043b\u0433\u043e\u0440\u0438\u0442\u043c \u043a\u043e\u043c\u043f\u043e\u043d\u043e\u0432\u043a\u0438 chunked-\u0437\u0430\u043f\u0440\u043e\u0441\u043e\u0432 \u0434\u043e\u0440\u0430\u0431\u043e\u0442\u0430\u043d \u0434\u043b\u044f \u0443\u043f\u0440\u043e\u0449\u0435\u043d\u0438\u044f \u0440\u0430\u0437\u0434\u0435\u043b\u0435\u043d\u0438\u044f \u043f\u0440\u0438\u043a\u0440\u0435\u043f\u043b\u0451\u043d\u043d\u044b\u0445 \u043f\u043e\u043b\u0435\u0439 \u0438 \u0441\u0435\u043a\u0446\u0438\u0438 \u0441 \u0437\u0430\u0433\u043e\u043b\u043e\u0432\u043a\u0430\u043c\u0438. \u0414\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u044b \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0438 \u043f\u043e \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0435 \u043d\u0435\u043e\u0434\u043d\u043e\u0437\u043d\u0430\u0447\u043d\u043e\u0433\u043e \u0441\u043e\u0434\u0435\u0440\u0436\u0438\u043c\u043e\u0433\u043e \u0434\u043b\u044f \u0431\u043b\u043e\u043a\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0430\u0442\u0430\u043a \u043a\u043b\u0430\u0441\u0441\u0430  &#171;HTTP Request Smuggling&#187;, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0438\u0445 \u0432\u043a\u043b\u0438\u043d\u0438\u0432\u0430\u0442\u044c\u0441\u044f \u0432 \u0441\u043e\u0434\u0435\u0440\u0436\u0438\u043c\u043e\u0435 \u0437\u0430\u043f\u0440\u043e\u0441\u043e\u0432 \u0434\u0440\u0443\u0433\u0438\u0445 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u0439 \u0432 \u043f\u043e\u0442\u043e\u043a\u0435 \u043c\u0435\u0436\u0434\u0443 \u0444\u0440\u043e\u043d\u0442\u044d\u043d\u0434\u043e\u043c \u0438 \u0431\u044d\u043a\u0435\u043d\u0434\u043e\u043c.    <\/p>\n<p>Nell'aggiornamento della specifica HTTP\/2.0 \u00e8 stata chiaramente definita la compatibilit\u00e0 con TLS 1.3. \u00c8 stata declassata a obsoleta la precedente modalit\u00e0 di definizione delle priorit\u00e0 e le relative intestazioni. \u00c8 stato dichiarato obsoleto il meccanismo di aggiornamento delle connessioni da HTTP\/1.1, che non ha trovato ampia diffusione. Sono stati ridotti i requisiti per la verifica dei nomi dei campi e dei valori. Sono stati suggeriti per l'uso alcuni tipi di frame e parametri precedentemente riservati. Sono stati definiti in modo pi\u00f9 preciso i campi delle intestazioni vietati, che si riferiscono alla connessione.<br \/>\n<br \/>Fonte: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=57309\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041a\u043e\u043c\u0438\u0442\u0435\u0442 IETF (Internet Engineering Task Force), \u0437\u0430\u043d\u0438\u043c\u0430\u044e\u0449\u0438\u0439\u0441\u044f \u0440\u0430\u0437\u0432\u0438\u0442\u0438\u0435\u043c \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u043e\u0432 \u0438 \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u044b \u0438\u043d\u0442\u0435\u0440\u043d\u0435\u0442\u0430, \u0437\u0430\u0432\u0435\u0440\u0448\u0438\u043b \u0444\u043e\u0440\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 RFC \u0434\u043b\u044f \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 HTTP\/3.0 \u0438 \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u044b\u0435 \u0441 \u043d\u0438\u043c \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0438 \u043f\u043e\u0434 \u0438\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440\u0430\u043c\u0438 RFC 9114 (\u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b) \u0438 RFC 9204 (\u0442\u0435\u0445\u043d\u043e\u043b\u043e\u0433\u0438\u044f \u0441\u0436\u0430\u0442\u0438\u0435 \u0437\u0430\u0433\u043e\u043b\u043e\u0432\u043a\u043e\u0432 QPACK \u0434\u043b\u044f HTTP\/3). \u0421\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u044f HTTP\/3.0 \u043f\u043e\u043b\u0443\u0447\u0438\u043b\u0430 \u0441\u0442\u0430\u0442\u0443\u0441 &#171;\u041f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d\u043d\u043e\u0433\u043e \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u0430&#187;, \u043f\u043e\u0441\u043b\u0435 \u0447\u0435\u0433\u043e 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