{"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\/es\/blog\/news\/v-nochnyh-sborkah-firefox-poyavilas-podderzhka-http-3","title":{"rendered":"Las versiones nocturnas de Firefox han a\u00f1adido soporte para HTTP\/3","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>En <noindex><a rel=\"nofollow\" href=\"https:\/\/www.mozilla.org\/en-US\/firefox\/channel\/desktop\/#nightly\">versiones nocturnas<\/a><\/noindex>  Firefox, que ser\u00e1 la base de la versi\u00f3n 72 de Firefox, programada para el 7 de enero, <noindex><a rel=\"nofollow\" href=\"https:\/\/bugzilla.mozilla.org\/show_bug.cgi?id=1581637\">se ha a\u00f1adido<\/a><\/noindex> Soporte para el protocolo HTTP\/3. Por defecto, HTTP\/3 est\u00e1 desactivado y requiere activar la opci\u00f3n \u00abnetwork.http.http3.enabled\u00bb en about:config. <\/p>\n<p>El soporte de HTTP\/3 en Firefox se basa en un proyecto desarrollado por Mozilla, <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/mozilla\/neqo\">neqo<\/a><\/noindex>, que proporciona una implementaci\u00f3n de cliente y servidor para el protocolo QUIC. El c\u00f3digo de los componentes para el soporte de HTTP\/3 y QUIC est\u00e1 escrito en Rust.<br \/>\nDesde el software cliente, el soporte experimental de HTTP\/3 ya est\u00e1  <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51526\">se ha a\u00f1adido<\/a><\/noindex> en Chrome y curl, y para los servidores est\u00e1 disponible en forma de  <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/cloudflare\/quiche\/tree\/master\/extras\/nginx\">m\u00f3dulo<\/a><\/noindex> para nginx y <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/cloudflare\/quiche\/blob\/master\/examples\/http3-server.rs\">un servidor de pruebas<\/a><\/noindex> basado en la biblioteca <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\">de la especificaci\u00f3n CSI a trav\u00e9s de sidecars no cumple con estos requisitos:<\/a><\/noindex>  QUIC y HTTP\/3 en Rust de Cloudflare). Para verificar el funcionamiento de los clientes de HTTP\/3, <noindex><a rel=\"nofollow\" href=\"https:\/\/bagder.github.io\/HTTP3-test\/\">se han lanzado<\/a><\/noindex> varios sitios de prueba, la mayor\u00eda de los cuales a\u00fan no se abren correctamente en Firefox (HTTP\/3 est\u00e1 en una etapa de <noindex><a rel=\"nofollow\" href=\"https:\/\/datatracker.ietf.org\/doc\/draft-ietf-quic-http\/\">borrador de especificaciones<\/a><\/noindex> y no est\u00e1 completamente estandarizado).<\/p>\n<p>Recordemos que HTTP\/3 normaliza el uso del protocolo QUIC como transporte para HTTP\/2. El protocolo <noindex><a rel=\"nofollow\" href=\"https:\/\/www.chromium.org\/quic\/\">QUIC<\/a><\/noindex> (Quick UDP Internet Connections) ha sido desarrollado por Google desde 2013 como una alternativa a la combinaci\u00f3n TCP+TLS para la web, que resuelve los problemas de alto tiempo de establecimiento y negociaci\u00f3n de conexiones en TCP y elimina las demoras debido a la p\u00e9rdida de paquetes durante la transmisi\u00f3n de datos. QUIC es una capa sobre el protocolo UDP, que soporta la multiplexi\u00f3n de m\u00faltiples conexiones y proporciona m\u00e9todos de cifrado equivalentes a TLS\/SSL. <\/p>\n<p>Principales <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.google.com\/document\/d\/1lmL9EF6qKrk7gbazY8bIdvq3Pno2Xj_l_YShP40GLQE\/preview?sle=true#\">caracter\u00edsticas<\/a><\/noindex> QUIC:\n<\/p>\n<ul>\n<li class=\"l\"> Alta seguridad, similar a TLS (de hecho, QUIC permite el uso de TLS sobre UDP);\n<\/li>\n<li class=\"l\"> Control de integridad del flujo, previniendo la p\u00e9rdida de paquetes;\n<\/li>\n<li class=\"l\"> La posibilidad de establecer una conexi\u00f3n de inmediato (0-RTT, en aproximadamente el 75% de los casos los datos se pueden transmitir inmediatamente despu\u00e9s del env\u00edo del paquete de establecimiento de conexi\u00f3n) y asegurar una latencia m\u00ednima entre el env\u00edo de la solicitud y la recepci\u00f3n de la respuesta (RTT, Round Trip Time);\n<\/li>\n<li class=\"l\"> No utilizar el mismo n\u00famero de secuencia para la retransmisi\u00f3n del paquete, lo que permite evitar ambig\u00fcedades al determinar los paquetes recibidos y eliminar los tiempos de espera;\n<\/li>\n<li class=\"l\"> La p\u00e9rdida de paquetes afecta solo a la entrega de la corriente asociada y no detiene la entrega de datos en las corrientes que se transmiten en paralelo a trav\u00e9s de la conexi\u00f3n actual;\n<\/li>\n<li class=\"l\"> Mecanismos de correcci\u00f3n de errores que minimizan la latencia debido a la retransmisi\u00f3n de paquetes perdidos. Uso de c\u00f3digos especiales de correcci\u00f3n de errores a nivel de paquete para reducir situaciones que requieren la retransmisi\u00f3n de datos de un paquete perdido.\n<\/li>\n<li class=\"l\"> Los l\u00edmites de los bloques criptogr\u00e1ficos est\u00e1n alineados con los l\u00edmites de los paquetes QUIC, lo que reduce el impacto de la p\u00e9rdida de paquetes en la decodificaci\u00f3n del contenido de los siguientes paquetes;\n<\/li>\n<li class=\"l\"> Ausencia de problemas de bloqueo de la cola TCP;\n<\/li>\n<li class=\"l\"> Soporte para un identificador de conexi\u00f3n que permite reducir el tiempo de establecimiento de una nueva conexi\u00f3n para clientes m\u00f3viles;\n<\/li>\n<li class=\"l\"> Capacidad de conectar mecanismos avanzados de control de congesti\u00f3n de la conexi\u00f3n;\n<\/li>\n<li class=\"l\"> Uso de t\u00e9cnicas de predicci\u00f3n de ancho de banda en cada direcci\u00f3n para asegurar la intensidad \u00f3ptima de env\u00edo de paquetes, evitando caer en un estado de congesti\u00f3n donde se observa la p\u00e9rdida de paquetes;\n<\/li>\n<li class=\"l\">  Notable <noindex><a rel=\"nofollow\" href=\"http:\/\/web.cs.wpi.edu\/~claypool\/ms\/quic\/quic-thesis.pdf\">aumento<\/a><\/noindex> rendimiento y capacidad de transporte en comparaci\u00f3n con TCP. Para servicios de video como YouTube, la aplicaci\u00f3n de QUIC ha demostrado reducir las operaciones de repetici\u00f3n de b\u00fafer al ver videos en un 30%.\n<\/ul>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Fuente: <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 5.0.2 - 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 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