{"id":32192,"date":"2021-05-27T11:06:16","date_gmt":"2021-05-27T09:06:16","guid":{"rendered":"https:\/\/kinsta.com\/?p=42574"},"modified":"2023-08-29T08:24:58","modified_gmt":"2023-08-28T23:24:58","slug":"http3","status":"publish","type":"post","link":"https:\/\/kinsta.com\/jp\/blog\/http3\/","title":{"rendered":"HTTP\/3\u3068\u306f\u4f55\u304b\uff1f\u2212UDP\u30d9\u30fc\u30b9\u306e\u9ad8\u901f\u65b0\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u6982\u8981"},"content":{"rendered":"<h3>TL;DR<\/h3>\n<p>2018\u5e7411\u6708\u3001\u30d0\u30f3\u30b3\u30af\u3067IETF\uff08Internet Engineering Task Force\uff09\u304c\u958b\u50ac\u3055\u308c\u3001\u65b0\u3057\u3044<a href=\"https:\/\/tools.ietf.org\/html\/draft-ietf-quic-http-17\">\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30c9\u30e9\u30d5\u30c8<\/a>\u304c\u63a1\u629e\u3055\u308c\u307e\u3057\u305f\u3002\u307e\u305f\u3001<a href=\"https:\/\/kinsta.com\/jp\/learn\/what-is-http2\/\">HTTP\/2<\/a>\u306e\u5f8c\u7d99\u30d7\u30ed\u30c8\u30b3\u30eb\u3001QUIC\u30c8\u30e9\u30f3\u30b9\u30dd\u30fc\u30c8\u30d7\u30ed\u30c8\u30b3\u30eb\u306f\u300cHTTP\/3\u300d\u306b\u540d\u79f0\u5909\u66f4\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n<p>HTTP\/3\u306fUDP\uff08User Datagram Protocol\uff09\u3092\u4f7f\u7528\u3059\u308b\u901a\u4fe1\u65b9\u5f0f\u3067\u3001Google\u3084Facebook\u306a\u3069\u306e\u6709\u540d\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u4f01\u696d\u3067\u3059\u3067\u306b\u63a1\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002Chrome\u3092\u4f7f\u3063\u3066Google\u306e\u30b5\u30fc\u30d3\u30b9\u306b\u63a5\u7d9a\u3057\u3066\u3044\u308b\u30e6\u30fc\u30b6\u30fc\u306f\u3001\u6050\u3089\u304f\u77e5\u3089\u306a\u3044\u3046\u3061\u306bQUIC\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u306f\u305a\u3067\u3059\u3002<\/p>\n<p>\u65b0\u30d0\u30fc\u30b8\u30e7\u30f3\u306eHTTP\u30d7\u30ed\u30c8\u30b3\u30eb\u306f\u3001\u30d9\u30a2\u30e1\u30bf\u30eb\u3067\u4f4e\u30ec\u30d9\u30eb\u306eUDP\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u6069\u6075\u3092\u53d7\u3051\u3064\u3064\u3001\u65e7\u30d0\u30fc\u30b8\u30e7\u30f3\u306eTCP\u5c64\u306b\u3042\u3063\u305f\u591a\u304f\u306e\u65b0\u6a5f\u80fd\u3092\u5b9a\u7fa9\u3057\u307e\u3059\u3002\u3064\u307e\u308a\u3001\u65e2\u5b58\u306e\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30a4\u30f3\u30d5\u30e9\u306e\u5236\u7d04\u3092\u89e3\u6d88\u3059\u308b\u65b9\u6cd5\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/p>\n<p>\u767b\u5834\u4ee5\u6765\u3001HTTP\/3\u306f\u597d\u610f\u7684\u306b\u8fce\u3048\u3089\u308c\u307e\u3057\u305f\u3002IETF\u306b\u3088\u308b\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30c9\u30e9\u30d5\u30c8\u306e\u671f\u9650\u304c\u5207\u308c\u308b2021\u5e748\u6708\u306b\u306f\u3001HTTP\/3\u304c\u7b2c3\u4e16\u4ee3\u306e\u65b0\u3057\u3044HTTP\u898f\u683c\u306b\u6607\u683c\u3059\u308b\u3053\u3068\u304c\u671f\u5f85\u3055\u308c\u307e\u3059\u3002<\/p>\n<div><\/div><kinsta-auto-toc heading=\"Table of Contents\" exclude=\"last\" list-style=\"arrow\" selector=\"h2\" count-number=\"-1\"><\/kinsta-auto-toc>\n\n<h2>HTTP\/3\u306e\u9032\u5c55\uff082026\u5e74\uff09<\/h2>\n<p>\u53e3\u306e\u60aa\u3044\u4eba\u306b\u3088\u308c\u3070\u3001\u30a6\u30a7\u30d6\u696d\u754c\u306e\u9ad8\u901f\u5316\u3068\u4f4e\u30ec\u30a4\u30c6\u30f3\u30b7\u30fc\u3078\u306e\u6b32\u6c42\u306b\u5339\u6575\u3059\u308b\u306e\u306f\u3001Google Chrome\u306e\u30e1\u30e2\u30ea\u30fc\u306b\u5bfe\u3059\u308b\u6b32\u6c42\u304f\u3089\u3044\u3060\u305d\u3046\u3067\u3059\u3002<\/p>\n<p>\u6570\u5e74\u524d\u306b<a href=\"https:\/\/kinsta.com\/jp\/learn\/what-is-http2\/\">HTTP\/2\u306b\u95a2\u3059\u308b\u8a18\u4e8b<\/a>\u3092\u516c\u958b\u3057\u3066\u3044\u307e\u3059\u304c\u3001<a href=\"https:\/\/w3techs.com\/technologies\/details\/ce-http2\/all\/all\">W3Techs\u8abf\u3079<\/a>\u3067\u306f\u3001HTTP\/2\u306f\u73fe\u5728\u3001\u4e16\u754c\u3067\u7d0445%\u306e\u666e\u53ca\u7387\u306b\u9054\u3057\u3066\u304a\u308a\u3001<a href=\"https:\/\/caniuse.com\/#search=http2\">Can I Use<\/a>\u306b\u3088\u308b\u3068\u3001\u3059\u3079\u3066\u306e\u4e3b\u8981\u30d6\u30e9\u30a6\u30b6\u3067\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3057\u304b\u3057\u4eca\u56de\u53d6\u308a\u4e0a\u3052\u308b\u306e\u306f\u3001\u305d\u306e\u6b21\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u3067\u3042\u308bHTTP\/3\u306b\u3064\u3044\u3066\u3002<\/p>\n<figure id=\"attachment_97389\" aria-describedby=\"caption-attachment-97389\" style=\"width: 1760px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-97389 size-full\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2019\/03\/http2-adoption-chart.png\" alt=\"HTTP\/2\u306e\u666e\u53ca\u7387\" width=\"1760\" height=\"1260\"><figcaption id=\"caption-attachment-97389\" class=\"wp-caption-text\">HTTP\/2\u306e\u666e\u53ca\u7387<\/figcaption><\/figure>\n<p>HTTP\/3\u306f\u3001\u3053\u306e\u8a18\u4e8b\u306e\u57f7\u7b46\u6642\u70b9\u3067\u3001<a href=\"https:\/\/tools.ietf.org\/html\/draft-ietf-quic-http-18\">IETF\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30c9\u30e9\u30d5\u30c8<\/a>\uff08Internet-Draft\u3001ID\uff09\u3067\u3059\u3002\u3053\u308c\u306f\u3001<a href=\"https:\/\/www.ietf.org\/about\/\">Internet Engineering Task Force<\/a>\uff08IETF\uff09\u304c\u3001\u4eca\u5f8c\u306e\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u6a19\u6e96\u3068\u3057\u3066\u691c\u8a0e\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002IETF\u306f\u3001\u56fd\u969b\u7684\u306a\u300c\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u6a19\u6e96\u5316\u56e3\u4f53\u300d\u3067\u3001TCP\u3001<a href=\"https:\/\/tools.ietf.org\/html\/rfc8200\">IPv6<\/a>\u3001VoIP\u3001Internet of Things\uff08IoT\uff09\u306a\u3069\u3001\u5408\u610f\u3055\u308c\u305f\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30d7\u30ed\u30c8\u30b3\u30eb\u6a19\u6e96\u306e\u5b9a\u7fa9\u3068\u63a8\u9032\u3092\u62c5\u5f53\u3057\u307e\u3059\u3002<\/p>\n<p>IETF\u306f\u3001\u30a6\u30a7\u30d6\u696d\u754c\u3092\u7d50\u675f\u3055\u305b\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u306e\u65b9\u5411\u6027\u306b\u95a2\u3059\u308b\u8b70\u8ad6\u3092\u63a8\u9032\u3059\u308b\u30aa\u30fc\u30d7\u30f3\u306a\u6a19\u6e96\u5316\u56e3\u4f53\u3067\u3059\u3002\u73fe\u5728HTTP\/3\u306f\u3001<a href=\"https:\/\/www.ietf.org\/blog\/how-read-rfc\/\">RFC<\/a>\uff08Request For Comments\uff09\u306b\u8a8d\u5b9a\u3001\u3064\u307e\u308a\u516c\u5f0f\u306a\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30d7\u30ed\u30c8\u30b3\u30eb\u3068\u3057\u3066\u5b9a\u7fa9\u3055\u308c\u308b\u4e00\u3064\u524d\u306e\u6bb5\u968e\u300c\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30c9\u30e9\u30d5\u30c8\u300d\uff08ID\uff09\u306b\u3042\u308a\u307e\u3059\u3002<\/p>\n\n<h3>\u30a6\u30a7\u30d6\u30d6\u30e9\u30a6\u30b6\u306eHTTP\/3\u30b5\u30dd\u30fc\u30c8<\/h3>\n<p><a href=\"https:\/\/caniuse.com\/http3\">\u30a6\u30a7\u30d6\u30d6\u30e9\u30a6\u30b6<\/a>\u306b\u304a\u3044\u3066\u306f\u3001Chrome v87\u3001Firefox v88\u3001Edge v87\u306f\u3059\u3079\u3066\u30c7\u30d5\u30a9\u30eb\u30c8\u3067HTTP\/3\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u3059\u3002Safari\u3067\u306f\u3001Safari Technology Preview v104\u3067HTTP\/3\u30b5\u30dd\u30fc\u30c8\u3092\u6709\u52b9\u306b\u3067\u304d\u307e\u3059\u304c\u3001\u5b89\u5b9a\u7248\u3067\u306f\u73fe\u5728\u5229\u7528\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n<h3>HTTP\/3\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u30b5\u30dd\u30fc\u30c8<\/h3>\n<p>HTTP\/3\u3092\u6d3b\u7528\u3068\u8003\u3048\u3066\u3044\u308b\u958b\u767a\u8005\u5411\u3051\u306b\u3001\u4e3b\u8981\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u591a\u304f\u3067\u306f\u3059\u3067\u306bHTTP\/3\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u3059\u3002\u3068\u306f\u8a00\u3048\u3001\u73fe\u5728\u306f\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30c9\u30e9\u30d5\u30c8\u306e\u6bb5\u968e\u306b\u3042\u308b\u305f\u3081\u3001\u4ee5\u4e0b\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u3067\u4f5c\u696d\u3059\u308b\u969b\u306f\u3001\u6700\u65b0\u306e\u72b6\u614b\u3067\u3042\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<ul>\n<li>Python\u2500<a href=\"https:\/\/pypi.org\/project\/http3\/\">http3<\/a>\u3001<a href=\"https:\/\/pypi.org\/project\/aioquic\/\">aioquic<\/a><\/li>\n<li>Rust\u2500<a href=\"https:\/\/github.com\/cloudflare\/quiche\">quiche<\/a>\u3001<a href=\"https:\/\/github.com\/mozilla\/neqo\">neqo<\/a>\u3001<a href=\"https:\/\/github.com\/quinn-rs\/quinn\">quinn<\/a><\/li>\n<li>C\u2500<a href=\"https:\/\/github.com\/ngtcp2\/nghttp3\">nghttp3<\/a>\u3001<a href=\"https:\/\/github.com\/litespeedtech\/lsquic\">lsquic<\/a><\/li>\n<li>Go\u2500<a href=\"https:\/\/github.com\/lucas-clemente\/quic-go\">quicgo<\/a><\/li>\n<li>JavaScript\u2500<a href=\"https:\/\/kinsta.com\/jp\/blog\/what-is-node-js\/\">Node.js<\/a><\/li>\n<\/ul>\n<h3>HTTP\/3\u306e\u30a4\u30f3\u30d5\u30e9\u30b5\u30dd\u30fc\u30c8<\/h3>\n<p>\u30a4\u30f3\u30d5\u30e9\u9762\u3067\u306f\u3001Cloudflare\u306f\u305d\u306e\u30a8\u30c3\u30b8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5168\u4f53\u3067HTTP\/3\u306e\u30b5\u30dd\u30fc\u30c8\u3092\u5148\u5c0e\u3057\u3066\u3044\u307e\u3059\u3002\u3064\u307e\u308a\u3001Cloudflare\u304c\u6709\u52b9\u306b\u306a\u3063\u3066\u3044\u308b\u30b5\u30a4\u30c8\u3067\u306f\u3001\u624b\u9593\u3092\u304b\u3051\u308b\u3053\u3068\u306a\u304f\u3001HTTP\/3\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3068\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u5f37\u5316\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>Kinsta\u306e\u304a\u5ba2\u69d8\u306e\u30b5\u30a4\u30c8\u306f\u3001<a href=\"https:\/\/kinsta.com\/jp\/cloudflare-integration\/\">\u7121\u6599\u306eCloudflare\u7d71\u5408<\/a>\u3067\u4fdd\u8b77\u3055\u308c\u307e\u3059\u3002\u30a8\u30f3\u30bf\u30fc\u30d7\u30e9\u30a4\u30ba\u30ec\u30d9\u30eb\u306e\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3068DDoS\u5bfe\u7b56\u306b\u52a0\u3048\u3066\u3001HTTP\/3\u3082\u3054\u5229\u7528\u3044\u305f\u3060\u3051\u307e\u3059\u3002<\/p>\n<p>\u81ea\u5206\u306e\u30b5\u30a4\u30c8\u3067HTTP\/3\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3059\u308b\u306b\u306f\u3001<a href=\"https:\/\/gf.dev\/http3-test\">Geekflare\u306eHTTP\/3\u30c6\u30b9\u30c8\u30c4\u30fc\u30eb<\/a>\u304c\u4fbf\u5229\u3067\u3059\u3002\u30c9\u30e1\u30a4\u30f3\u3092\u5165\u529b\u3057\u3001\u300cCheck HTTP\/3\u300d\u3092\u30af\u30ea\u30c3\u30af\u3059\u308b\u3060\u3051\u3067\u3001HTTP\/3\u30b5\u30dd\u30fc\u30c8\u306e\u6709\u7121\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_97390\" aria-describedby=\"caption-attachment-97390\" style=\"width: 1500px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-97390 size-full\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2019\/03\/geekflare-http3-testing-tool.jpg\" alt=\"Geekflare\u306eHTTP\/3\u30c6\u30b9\u30c8\u30c4\u30fc\u30eb\" width=\"1500\" height=\"799\"><figcaption id=\"caption-attachment-97390\" class=\"wp-caption-text\">Geekflare\u306eHTTP\/3\u30c6\u30b9\u30c8\u30c4\u30fc\u30eb<\/figcaption><\/figure>\n<p>\u30b5\u30a4\u30c8\u3067HTTP\/3\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002kinstalife.com\u306fKinsta\u3067\u904b\u55b6\u3055\u308c\u3066\u3044\u308b\u305f\u3081\u3001Cloudflare\u7d71\u5408\u306e\u4e00\u74b0\u306b\u3088\u308a\u3001HTTP\/3\u3092\u5b8c\u5168\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_97391\" aria-describedby=\"caption-attachment-97391\" style=\"width: 1500px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-97391 size-full\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2019\/03\/http3-on-kinsta.jpg\" alt=\"Kinsta\u306fHTTP\/3\u3092\u30b5\u30dd\u30fc\u30c8\" width=\"1500\" height=\"800\"><figcaption id=\"caption-attachment-97391\" class=\"wp-caption-text\">Kinsta\u306fHTTP\/3\u3092\u30b5\u30dd\u30fc\u30c8<\/figcaption><\/figure>\n<p>\u307e\u305f\u3001\u30d6\u30e9\u30a6\u30b6\u306e\u691c\u8a3c\u6a5f\u80fd\u3092\u4f7f\u7528\u3057\u3066\u78ba\u8a8d\u3059\u308b\u3053\u3068\u3082\u3002HTTP\/3\u3092\u30b5\u30dd\u30fc\u30c8\u3059\u308bGoogle Chrome\u306e\u6700\u65b0\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u4f7f\u3063\u305f\u4f8b\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\u691c\u8a3c\u6a5f\u80fd\u3092\u958b\u304f\u306b\u306f\u3001\u30da\u30fc\u30b8\u3092\u53f3\u30af\u30ea\u30c3\u30af\u3057\u3001\u300c\u691c\u8a3c\u300d\uff1e\u300c\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u300d\u30bf\u30d6\u306b\u79fb\u52d5\u3057\u307e\u3059\u3002HTTP\u30d7\u30ed\u30c8\u30b3\u30eb\u306f\u3001\u300c\u30d7\u30ed\u30c8\u30b3\u30eb\u300d\u5217\u3067\u78ba\u8a8d\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u3001HTTP\/2\u63a5\u7d9a\u306f\u300ch2\u300d\u3001HTTP\/3\u63a5\u7d9a\u306f\u300ch3-XX\u300d\u3068\u8868\u793a\u3055\u308c\u307e\u3059\uff08XX\u306f\u7279\u5b9a\u306eHTTP\/3\u30c9\u30e9\u30d5\u30c8\uff09\u3002\u4ee5\u4e0b\u306e\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8\u3067\u306f\u3001kinstalife.com\u306f\u300ch3-29\u300d\u3001\u3064\u307e\u308a\u300cHTTP\/3 Draft 29\u300d\u3067\u306e\u63a5\u7d9a\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_97392\" aria-describedby=\"caption-attachment-97392\" style=\"width: 1500px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-97392 size-full\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2019\/03\/check-http3-support-browser.jpg\" alt=\"Chrome\u306e\u6700\u65b0\u30d0\u30fc\u30b8\u30e7\u30f3\u306fh3-29\u30d7\u30ed\u30c8\u30b3\u30eb\u3092\u30b5\u30dd\u30fc\u30c8\" width=\"1500\" height=\"733\"><figcaption id=\"caption-attachment-97392\" class=\"wp-caption-text\">Chrome\u306e\u6700\u65b0\u30d0\u30fc\u30b8\u30e7\u30f3\u306fh3-29\u30d7\u30ed\u30c8\u30b3\u30eb\u3092\u30b5\u30dd\u30fc\u30c8<\/figcaption><\/figure>\n<p>HTTP\/3\u306e\u73fe\u72b6\u306b\u3064\u3044\u3066\u7406\u89e3\u3057\u305f\u3068\u3053\u308d\u3067\u3001\u7d9a\u3044\u3066\u306fHTTP\/2\u3068HTTP\/3\u306e\u9055\u3044\u306b\u8feb\u308a\u307e\u3059\u3002<\/p>\n<h2>HTTP\/2\u306e\u6982\u8981<\/h2>\n<p>HTTP\/2\u3067\u306f\u3001<a href=\"https:\/\/www.sitepoint.com\/http2-background-performance-benefits-implementations\/\">\u30ce\u30f3\u30d6\u30ed\u30c3\u30ad\u30f3\u30b0\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3001\u30d1\u30a4\u30d7\u30e9\u30a4\u30f3\u3001\u30b5\u30fc\u30d0\u30fc\u30d7\u30c3\u30b7\u30e5<\/a>\u306a\u3069\u306e\u5927\u304d\u306a\u6539\u5584\u304c\u884c\u308f\u308c\u3001\u4e0b\u5c64\u306eTCP\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u5236\u9650\u3092\u514b\u670d\u3057\u307e\u3057\u305f\u3002\u3053\u306e\u7d50\u679c\u3001\u30ea\u30af\u30a8\u30b9\u30c8\u30ec\u30b9\u30dd\u30f3\u30b9\u306e\u30b5\u30a4\u30af\u30eb\u3084\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u306e\u6570\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>HTTP\/2\u3067\u306f\u30011\u3064\u306eTCP\u63a5\u7d9a\u3067\u8907\u6570\u306e\u30ea\u30bd\u30fc\u30b9\u3092\u30d7\u30c3\u30b7\u30e5\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002\u3053\u308c\u3092\u300c\u30de\u30eb\u30c1\u30d7\u30ec\u30ad\u30b7\u30f3\u30b0\u300d\uff08\u591a\u91cd\u5316\uff09\u3068\u547c\u3073\u307e\u3059\u3002\u9759\u7684\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u306e\u9806\u756a\u3082\u67d4\u8edf\u306b\u306a\u308a\u3001\u5358\u4e00\u306e\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u306e\u9032\u6357\u306b\u3088\u3063\u3066\u30da\u30fc\u30b8\u304c\u5236\u7d04\u3055\u308c\u308b\u3053\u3068\u3082\u306a\u304f\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n<figure style=\"width: 500px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2016\/04\/http2-push.png\" alt=\"HTTP\/2\u30d7\u30c3\u30b7\u30e5\" width=\"500\" height=\"244\"><figcaption class=\"wp-caption-text\">HTTP\/2\u30d7\u30c3\u30b7\u30e5<\/figcaption><\/figure>\n<p>\u5177\u4f53\u7684\u306b\u306f\u3001\u3082\u306f\u30841\u3064\u306e\u5927\u304d\u306aJavaScript\u30ea\u30bd\u30fc\u30b9\u306e\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u304c\u3001\u9806\u756a\u5f85\u3061\u3092\u3057\u3066\u3044\u308b\u4ed6\u306e\u3059\u3079\u3066\u306e\u9759\u7684\u30ea\u30bd\u30fc\u30b9\u306e\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u306b\u306f\u306a\u308a\u307e\u305b\u3093\u3002<\/p>\n<figure style=\"width: 2880px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2019\/03\/no-pipelining-pipelining.png\" alt=\"\u30d1\u30a4\u30d7\u30e9\u30a4\u30f3\u306a\u3057\u3068\u30d1\u30a4\u30d7\u30e9\u30a4\u30f3\u3042\u308a\" width=\"2880\" height=\"2003\"><figcaption class=\"wp-caption-text\">\u30d1\u30a4\u30d7\u30e9\u30a4\u30f3\u306a\u3057\u3068\u30d1\u30a4\u30d7\u30e9\u30a4\u30f3\u3042\u308a(\u753b\u50cf\u51fa\u5178: <a href=\"https:\/\/commons.wikimedia.org\/wiki\/File:HTTP_pipelining2.svg#\/media\/File:HTTP_pipelining2.svg\" target=\"_blank\" rel=\"noopener noreferrer\">Wikipedia<\/a>, Author Mwhitlock)<\/figcaption><\/figure>\n<p>\u52a0\u3048\u3066\u3001HTTP\/2\u306e\u30d8\u30c3\u30c0\u30fcHPACK\u5727\u7e2e\u3068\u3001\u30c7\u30fc\u30bf\u8ee2\u9001\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u304c\u30d0\u30a4\u30ca\u30ea\u5f62\u5f0f\u306b\u306a\u3063\u305f\u3053\u3068\u306b\u3088\u308a\u3001\u591a\u304f\u306e\u5834\u5408\u3067\u5927\u5e45\u306b\u52b9\u7387\u306e\u826f\u3044\u30d7\u30ed\u30c8\u30b3\u30eb\u306b\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n<figure style=\"width: 942px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2016\/04\/http2-hpack-compression.png\" alt=\"HTTP\/2 HPACK\u5727\u7e2e\" width=\"942\" height=\"375\"><figcaption class=\"wp-caption-text\">HTTP\/2 HPACK\u5727\u7e2e<\/figcaption><\/figure>\n<p>\u3057\u304b\u3057\u3001\u4e3b\u8981\u306a\u30d6\u30e9\u30a6\u30b6\u306e\u5b9f\u88c5\u3067\u306f\u3001HTTP\/2\u306e\u30e1\u30ea\u30c3\u30c8\u3092\u4eab\u53d7\u3059\u308b\u306b\u306f\u3001Web\u30b5\u30a4\u30c8\u306b\u6697\u53f7\u5316\uff08SSL\uff09\u3092\u5b9f\u88c5\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u3001\u8a08\u7b97\u306e\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u304c\u767a\u751f\u3059\u308b\u305f\u3081\u901f\u5ea6\u306e\u6539\u5584\u304c\u76ee\u306b\u898b\u3048\u306a\u3044\u3053\u3068\u3082\u3042\u308a\u307e\u3057\u305f\u3002\u307e\u305f\u3001HTTP\/2\u3078\u306e\u79fb\u884c\u5f8c\u306b\u30e6\u30fc\u30b6\u30fc\u304b\u3089\u901f\u5ea6\u4f4e\u4e0b\u306e\u5831\u544a\u3092\u53d7\u3051\u308b\u30b1\u30fc\u30b9\u3082\u3042\u308a\u307e\u3057\u305f\u3002<\/p>\n<p>HTTP\/2\u304c\u63a1\u7528\u3055\u308c\u305f\u5f53\u521d\u306f\u3001\u5fc3\u81d3\u306e\u5f31\u3044\u30b5\u30fc\u30d0\u30fc\u7ba1\u7406\u8005\u5411\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3067\u3057\u305f\u3002<\/p>\n<p>Nginx\u306e\u5b9f\u88c5\u3082\u3001\u30b5\u30fc\u30d0\u30fc\u30d7\u30c3\u30b7\u30e5\u6a5f\u80fd\u304c\u306a\u304f\u3001\u30e2\u30b8\u30e5\u30fc\u30eb\u306b\u983c\u3063\u3066\u3044\u307e\u3057\u305f\u3002\u3057\u304b\u3082\u3001<a href=\"https:\/\/kinsta.com\/jp\/blog\/nginx-vs-apache\/\">Nginx<\/a><a href=\"https:\/\/kinsta.com\/jp\/blog\/nginx-vs-apache\/\">\u306e\u30e2\u30b8\u30e5\u30fc\u30eb\u306f\u3001\u6163\u308c\u89aa\u3057\u3093\u3060Apache\u306e<\/a><a href=\"https:\/\/kinsta.com\/jp\/blog\/nginx-vs-apache\/\">\u30c9\u30ed\u30c3\u30d7\u30a4\u30f3\u30e2\u30b8\u30e5\u30fc\u30eb<\/a><a href=\"https:\/\/kinsta.com\/jp\/blog\/nginx-vs-apache\/\">\u3068\u306f\u7570\u306a\u308a<\/a>\u3001\u30b3\u30d4\u30fc\u3060\u3051\u3067\u306f\u6e08\u307e\u305a\u306b\u518d\u30b3\u30f3\u30d1\u30a4\u30eb\u304c\u5fc5\u8981\u3067\u3057\u305f\u3002<\/p>\n<p>\u73fe\u5728\u3001\u554f\u984c\u306e\u3044\u304f\u3064\u304b\u306f\u89e3\u6c7a\u3055\u308c\u3066\u3044\u307e\u3059\u304c\u3001\u30d7\u30ed\u30c8\u30b3\u30eb\u30b9\u30bf\u30c3\u30af\u5168\u4f53\u3092\u773a\u3081\u308b\u3068\u4e3b\u8981\u306a\u5236\u7d04\u306fHTTP\/2\u304c\u95d8\u3063\u3066\u3044\u308b\u30ec\u30a4\u30e4\u30fc\u3088\u308a\u3082\u4f4e\u3044\u30ec\u30d9\u30eb\u306b\u3042\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002<\/p>\n<p>\u554f\u984c\u3092\u8a73\u3057\u304f\u8aac\u660e\u3059\u308b\u305f\u3081\u306b\u3001\u4eca\u65e5\u306e\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30d7\u30ed\u30c8\u30b3\u30eb\u30b9\u30bf\u30c3\u30af\u3092\u6700\u4e0b\u5c64\u304b\u3089\u6700\u4e0a\u5c64\u307e\u3067\u89e3\u5256\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002HTTP\/2\u306e\u80cc\u666f\u306b\u3064\u3044\u3066\u3082\u3063\u3068\u77e5\u308a\u305f\u3044\u65b9\u306f\u3001\u300c<a href=\"https:\/\/kinsta.com\/jp\/learn\/what-is-http2\/\">\u7a76\u6975\u306eHTTP\/2\u30ac\u30a4\u30c9<\/a>\u300d\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n<h2 id=\"internet-protocol\">\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30d7\u30ed\u30c8\u30b3\u30eb\uff08IP\uff09<\/h2>\n<p>\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30d7\u30ed\u30c8\u30b3\u30eb\uff08IP\uff09\u306f\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30c8\u30dd\u30ed\u30b8\u30fc\u5168\u4f53\u306e\u4e0b\u5c64\u90e8\u5206\u3092\u5b9a\u7fa9\u3057\u3066\u3044\u307e\u3059\u3002\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30b9\u30bf\u30c3\u30af\u306e\u4e00\u90e8\u3092\u6210\u3057\u3066\u304a\u308a\u3001\u305d\u306e\u4e8b\u5b9f\u306b\u8b70\u8ad6\u306e\u4f59\u5730\u306f\u3042\u308a\u307e\u305b\u3093\u3002IP\u3092\u30b9\u30bf\u30c3\u30af\u304b\u3089\u5916\u3059\u306b\u306f\u3001\u30eb\u30fc\u30bf\u30fc\u304b\u3089\u30b5\u30fc\u30d0\u30fc\u3001\u30a8\u30f3\u30c9\u30e6\u30fc\u30b6\u30fc\u306e\u30de\u30b7\u30f3\u307e\u3067\u3001\u3059\u3079\u3066\u3092\u5909\u66f4\u3057\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>\u3057\u305f\u304c\u3063\u3066\u3001\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u898b\u76f4\u3057\u306f\u5fc5\u8981\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u304c\u3001\u73fe\u6642\u70b9\u3067\u306f\u305d\u306e\u3088\u3046\u306a\u5927\u898f\u6a21\u306a\u53d6\u308a\u7d44\u307f\u306f\u8003\u3048\u3089\u308c\u3066\u3044\u307e\u305b\u3093\u3002\u5b9f\u884c\u53ef\u80fd\u3067\u3001\u9769\u65b0\u7684\u3067\u3001\u304b\u3064\u4e0b\u4f4d\u4e92\u63db\u6027\u306e\u3042\u308b\u4ee3\u66ff\u624b\u6bb5\u304c\u307e\u3060\u898b\u3064\u304b\u3063\u3066\u3044\u306a\u3044\u3053\u3068\u304c\u4e3b\u306a\u7406\u7531\u3067\u3059\u3002<\/p>\n<p>IP\u306e\u59cb\u307e\u308a\u306f\u30011974\u5e74\u306bIEEE\uff08<a href=\"https:\/\/wikipedia.org\/wiki\/Institute_of_Electrical_and_Electronic_Engineers\">Institute of Electrical and Electronics Engineers<\/a>\uff09\u304b\u3089\u767a\u8868\u3055\u308c\u305fVint Cerf\u6c0f\u3068Bob Cahn\u6c0f\u306e\u8ad6\u6587\u306b\u307e\u3067\u3055\u304b\u306e\u307c\u308a\u307e\u3059\u3002\u3053\u306e\u8ad6\u6587\u3067\u306f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u4e0a\u3067\u9001\u4fe1\u3055\u308c\u308b\u30d1\u30b1\u30c3\u30c8\u3084IP\u30a2\u30c9\u30ec\u30b9\u8d8a\u3057\u306e\u30d1\u30b1\u30c3\u30c8\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3084\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5185\u3067\u6570\u5024\u7684\u306b\u5b9a\u7fa9\u3055\u308c\u305f\u30ce\u30fc\u30c9\u30a2\u30c9\u30ec\u30b9\u3092\u8a73\u8ff0\u3057\u307e\u3057\u305f\u3002\u30d7\u30ed\u30c8\u30b3\u30eb\u306f\u3001\u30d1\u30b1\u30c3\u30c8\u306e\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3042\u308b\u3044\u306f\u30c7\u30fc\u30bf\u30b0\u30e9\u30e0\u3001\u3064\u307e\u308a\u30d8\u30c3\u30c0\u30fc\u3068\u30da\u30a4\u30ed\u30fc\u30c9\u3092\u5b9a\u7fa9\u3057\u307e\u3059\u3002<\/p>\n<p>1980\u5e74\u306b<a href=\"https:\/\/tools.ietf.org\/html\/rfc760\">RFC760<\/a>\u3067\u5b9a\u7fa9\u3055\u308c\u305f\u5f8c\u3001IETF\u306f<a href=\"https:\/\/tools.ietf.org\/html\/rfc791\">Request For Comments 791<\/a>\u3067\u3001\u4eca\u65e5\u307e\u3067\u5e83\u304f\u4f7f\u308f\u308c\u3066\u3044\u308b\u5b9a\u7fa9\u306b\u843d\u3061\u7740\u304d\u307e\u3057\u305f\u3002\u3053\u308c\u306f\u30d7\u30ed\u30c8\u30b3\u30eb\u306e4\u756a\u76ee\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u3067\u3059\u304c\u3001\u6700\u521d\u306e\u88fd\u54c1\u7248\u3068\u8a00\u3063\u3066\u826f\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n<figure style=\"width: 1206px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2019\/03\/internet-protocol-rfc791.png\" alt=\"\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30d7\u30ed\u30c8\u30b3\u30eb (RFC791)\" width=\"1206\" height=\"1848\"><figcaption class=\"wp-caption-text\">\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30d7\u30ed\u30c8\u30b3\u30eb\uff08\u753b\u50cf\u51fa\u5178\uff1a <a href=\"https:\/\/tools.ietf.org\/html\/rfc791\" target=\"_blank\" rel=\"noopener noreferrer\">RFC791<\/a>)<\/figcaption><\/figure>\n<p>IP\u3067\u306f32\u30d3\u30c3\u30c8\u30a2\u30c9\u30ec\u30b9\u3092\u4f7f\u7528\u3059\u308b\u305f\u3081\u3001\u30a2\u30c9\u30ec\u30b9\u6570\u306f\u7d0440\u5104\u306b\u5236\u9650\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u30d3\u30b8\u30cd\u30b9\u4ee5\u5916\u306e\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30e6\u30fc\u30b6\u30fc\u304cISP\u304b\u3089\u300c\u52d5\u7684IP\u30a2\u30c9\u30ec\u30b9\u300d\u3092\u5272\u308a\u5f53\u3066\u3089\u308c\u3001\u9759\u7684IP\u306f\u300c\u4ed8\u52a0\u4fa1\u5024\u300d\u3068\u307f\u306a\u3055\u308c\u3066\u8ffd\u52a0\u6599\u91d1\u304c\u767a\u751f\u3059\u308b\u4e0d\u53ef\u601d\u8b70\u306a\u4ed5\u69d8\u306f\u3001\u3053\u306e\u5236\u7d04\u306e\u305f\u3081\u3067\u3059\u3002<\/p>\n<p>ISP\u306f\u300c\u914d\u7d66\u300d\u3057\u3066\u3044\u308b\u308f\u3051\u3067\u3059\u3002<\/p>\n<p>\u305d\u306e\u5f8c\u300132\u30d3\u30c3\u30c8\u30a2\u30c9\u30ec\u30b9\u3067\u306f\u5341\u5206\u3067\u306a\u3044\u3053\u3068\u304c\u3059\u3050\u306b\u5224\u660e\u3057\u307e\u3059\u304c\u3001\u4e0d\u8db3\u306e\u5371\u6a5f\u304c\u76ee\u524d\u306b\u8feb\u3063\u3066\u3044\u305f\u305f\u3081\u3001\u554f\u984c\u306b\u5bfe\u51e6\u3059\u308b\u591a\u304f\u306eRFC\u304c\u767a\u884c\u3055\u308c\u307e\u3057\u305f\u3002\u3053\u308c\u3089\u306e\u89e3\u6c7a\u7b56\u306f\u73fe\u5728\u3082\u5e83\u304f\u4f7f\u308f\u308c\u3001<a href=\"https:\/\/wikipedia.org\/wiki\/Classless_Inter-Domain_Routing\">\u65e5\u5e38\u751f\u6d3b\u306e\u4e00\u90e8\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u304c<\/a>\u3001\u305d\u308c\u3067\u3082\u4e00\u6642\u7684\u306a\u5bfe\u75c7\u7642\u6cd5\u306b\u306f\u9055\u3044\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p><a href=\"https:\/\/kinsta.com\/jp\/blog\/ipv4-vs-ipv6\/#what-is-ipv6\">\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30d7\u30ed\u30c8\u30b3\u30eb\u30d0\u30fc\u30b8\u30e7\u30f36\uff08IPv6\uff09<\/a>\u306f\u3001\u3053\u306e\u5236\u9650\u306b\u5bfe\u51e6\u3059\u308b\u76ee\u7684\u3067\u767b\u5834\u3057\u3001\u524d\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u304b\u3089\u5f90\u3005\u306b\u63a1\u7528\u3055\u308c\u3066\u304d\u3066\u3044\u307e\u3059\u30021998\u5e74\u306bIETF\u306e\u30c9\u30e9\u30d5\u30c8\u6a19\u6e96\u6587\u66f8\u3068\u306a\u308a\u30012017\u5e74\u306b\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u6a19\u6e96\u306b\u5f15\u304d\u4e0a\u3052\u3089\u308c\u307e\u3057\u305f\u3002<\/p>\n<p>IPv4\u306e\u30a2\u30c9\u30ec\u30b9\u7a7a\u9593\u306f\u300132\u30d3\u30c3\u30c8\u306e\u30a2\u30c9\u30ec\u30b9\u9577\u3067\u5236\u9650\u3055\u308c\u3066\u3044\u307e\u3057\u305f\u304c\u3001IPv6\u3067\u306f128\u30d3\u30c3\u30c8\u3001\u3064\u307e\u308a3.4 x 10\u306e38\u4e57\u500b\u306e\u30a2\u30c9\u30ec\u30b9\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3057\u305f\u3002\u3053\u308c\u3067\u3057\u3070\u3089\u304f\u306e\u9593\u306f\u5341\u5206\u3067\u3057\u3087\u3046\u3002<\/p>\n<p><a href=\"https:\/\/www.google.com\/intl\/en\/ipv6\/statistics.html#tab=ipv6-adoption\">Google<\/a>\u3068\u305d\u306e\u30e6\u30fc\u30b6\u30fc\u306eIPv6\u63a5\u7d9a\u72b6\u6cc1\u306b\u3088\u308b\u3068\u30012021\u5e746\u6708\u73fe\u5728\u3001IPv6\u306e\u666e\u53ca\u7387\u306f35\uff05\u5f37\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<figure style=\"width: 1928px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2019\/03\/ipv6-adoption.png\" alt=\"IPv6\u306e\u63a1\u7528\" width=\"1928\" height=\"1166\"><figcaption class=\"wp-caption-text\">IPv6\u306e\u63a1\u7528<\/figcaption><\/figure>\n<p>IP\u306f\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30b9\u30bf\u30c3\u30af\u306e\u57fa\u672c\u30ec\u30a4\u30e4\u30fc\u3067\u3042\u308a\u3001\u6700\u3082\u57fa\u672c\u7684\u306a\u90e8\u5206\u3092\u5b9a\u7fa9\u3057\u307e\u3059\u304c\u3001\u914d\u4fe1\u3084\u30c7\u30fc\u30bf\u306e\u6574\u5408\u6027\u3001\u9001\u4fe1\u30d1\u30b1\u30c3\u30c8\u306e\u9806\u5e8f\u306a\u3069\u306f\u4fdd\u8a3c\u3057\u307e\u305b\u3093\u3002\u3053\u308c\u3067\u306f\u4fe1\u983c\u6027\u306b\u6b20\u3051\u308b\u305f\u3081\u3001IPv4\u306e\u30d8\u30c3\u30c0\u5f62\u5f0f\u306b\u306f\u30d8\u30c3\u30c0\u30c1\u30a7\u30c3\u30af\u30b5\u30e0\u304c\u3042\u308a\u3001\u9001\u4fe1\u30ce\u30fc\u30c9\u306f\u3053\u308c\u3092\u4f7f\u7528\u3057\u3066\u30d8\u30c3\u30c0\u306e\u6574\u5408\u6027\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002IPv6\u30d0\u30fc\u30b8\u30e7\u30f3\u306f\u3053\u306e\u90e8\u5206\u3092\u4e0b\u306e\u30ea\u30f3\u30af\u5c64\u306b\u4f9d\u5b58\u3059\u308b\u3053\u3068\u3067\u3001\u9ad8\u901f\u6027\u3092\u5b9f\u73fe\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<figure style=\"width: 1424px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2019\/03\/internet-datagram-header.png\" alt=\"\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30c7\u30fc\u30bf\u30b0\u30e9\u30e0\u30d8\u30c3\u30c0\u30fc\" width=\"1424\" height=\"742\"><figcaption class=\"wp-caption-text\">\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30c7\u30fc\u30bf\u30b0\u30e9\u30e0\u30d8\u30c3\u30c0\u30fc\uff08\u753b\u50cf\u51fa\u5178\uff1a <a href=\"https:\/\/tools.ietf.org\/html\/rfc791\" target=\"_blank\" rel=\"noopener noreferrer\">RFC791<\/a>)<\/figcaption><\/figure>\n<h2 id=\"tcp-udp\">TCP\u3068UDP\u306e\u5f79\u5272\u3092\u7406\u89e3\u3059\u308b<\/h2>\n<p>\u3055\u3066\u3001\u3044\u3088\u3044\u3088HTTP\/3\u304cTCP\u3084UDP\u3068\u3069\u306e\u3088\u3046\u306a\u95a2\u4fc2\u306b\u3042\u308b\u306e\u304b\u3092\u63a2\u3063\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<h3>TCP<\/h3>\n<p>IP\u304c\u4eca\u65e5\u306e\u30aa\u30f3\u30e9\u30a4\u30f3\u901a\u4fe1\u306e\u3059\u3079\u3066\u306e\u57fa\u790e\u3068\u306a\u308b\u5c64\u3067\u3042\u308b\u306e\u306b\u5bfe\u3057\u3001TCP\uff08<a href=\"https:\/\/wikipedia.org\/wiki\/Transmission_Control_Protocol\">Transmission Control Protocol<\/a>\uff09\u306f\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30d7\u30ed\u30c8\u30b3\u30eb\u30b9\u30a4\u30fc\u30c8\u306e\u4e0a\u4f4d\u90e8\u5206\u3067\u3042\u308a\u3001\u30a6\u30a7\u30d6\u3001\u30e1\u30fc\u30eb\u3001\u30d5\u30a1\u30a4\u30eb\u8ee2\u9001\uff08FTP\uff09\u306a\u3069\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5c64\u3084\u30d7\u30ed\u30c8\u30b3\u30eb\u306b\u5fc5\u8981\u306a\u4fe1\u983c\u6027\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/p>\n<p>TCP\u306b\u306f\u3001\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u306b\u3088\u308b\u30de\u30eb\u30c1\u30b9\u30c6\u30c3\u30d7\u306e\u63a5\u7d9a\u78ba\u7acb\u3001\u30d1\u30b1\u30c3\u30c8\u9806\u306e\u4fdd\u8a3c\u3001\u5931\u308f\u308c\u305f\u30d1\u30b1\u30c3\u30c8\u306e\u518d\u9001\u306a\u3069\u304c\u542b\u307e\u308c\u307e\u3059\u3002\u9001\u4fe1\u8005\u3078\u306e\u914d\u4fe1\u306e\u30d5\u30a3\u30fc\u30c9\u30d0\u30c3\u30af\uff08Acks\uff09\u306a\u3069\u3082\u3042\u308a\u3001\u307e\u305f\u3001\u30a8\u30e9\u30fc\u3092\u691c\u51fa\u3059\u308b\u30c1\u30a7\u30c3\u30af\u30b5\u30e0\u8a08\u7b97\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u591a\u304f\u306e\u30b9\u30c6\u30c3\u30d7\u304cTCP\u3092\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u30d7\u30ed\u30c8\u30b3\u30eb\u306b\u3057\u3066\u304a\u308a\u3001\u4eca\u65e5\u5229\u7528\u3055\u308c\u3066\u3044\u308b\u6709\u540d\u306a\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30b5\u30fc\u30d3\u30b9\u306e\u57fa\u76e4\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>TCP\u306e\u4ed5\u69d8\u306f<a href=\"https:\/\/tools.ietf.org\/html\/rfc675\">1974\u5e74\uff08RFC 675\uff09<\/a>\u3068<a href=\"https:\/\/tools.ietf.org\/html\/rfc793\">1981\u5e74\uff08RFC 793\uff09<\/a>\u306b\u3055\u304b\u306e\u307c\u308a\u3001\u73fe\u5728\u307e\u3067\u5927\u304d\u306a\u5909\u66f4\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>\u3057\u304b\u3057\u3001TCP\u304c\u63d0\u4f9b\u3059\u308b\u4fe1\u983c\u6027\u306b\u306f\u30b3\u30b9\u30c8\u304c\u304b\u304b\u308a\u307e\u3059\u3002\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u3084\u914d\u4fe1\u30d5\u30a3\u30fc\u30c9\u30d0\u30c3\u30af\u3001\u9806\u5e8f\u4fdd\u8a3c\u3001\u8106\u5f31\u3067\u5197\u9577\u306a\u9762\u3082\u3042\u308b\u30c1\u30a7\u30c3\u30af\u30b5\u30e0\u3067\u6c42\u3081\u3089\u308c\u308b\u3001\u3059\u3079\u3066\u306e\u30e9\u30a6\u30f3\u30c9\u30c8\u30ea\u30c3\u30d7\u304c\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u3067\u3059\u3002TCP\u306f\u3001\u73fe\u4ee3\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u30b9\u30bf\u30c3\u30af\u306e\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u3067\u3042\u308a\u3001HTTP\/2\u306f\u3001TCP\u306e\u4e0a\u3067\u9054\u6210\u53ef\u80fd\u306a\u901f\u5ea6\u306e\u9650\u754c\u306b\u9054\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<h3>UDP<\/h3>\n<p><a href=\"https:\/\/wikipedia.org\/wiki\/User_Datagram_Protocol\">User Datagram Protocol<\/a>\uff08UPD\uff09\u3082\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30d7\u30ed\u30c8\u30b3\u30eb\u30b9\u30a4\u30fc\u30c8\u306e\u4e00\u3064\u3067\u3042\u308a\u3001\u305d\u306e\u4ed5\u69d8\u306f<a href=\"https:\/\/tools.ietf.org\/html\/rfc768\">1980\u5e74\uff08RFC 768\uff09<\/a>\u306b\u3055\u304b\u306e\u307c\u308a\u307e\u3059\u3002<\/p>\n<p>\u540d\u524d\u304c\u793a\u3059\u3088\u3046\u306bUDP\u306f\u3001\u30c7\u30fc\u30bf\u30b0\u30e9\u30e0\u30d9\u30fc\u30b9\u306e\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u30ec\u30b9\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3059\u3002\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u306f\u306a\u304f\u3001\u9806\u5e8f\u3084\u914d\u9001\u306e\u4fdd\u8a3c\u3082\u3042\u308a\u307e\u305b\u3093\u3002\u3064\u307e\u308a\u3001\u914d\u4fe1\u3084\u30c7\u30fc\u30bf\u306e\u6574\u5408\u6027\u306a\u3069\u3092\u78ba\u4fdd\u3059\u308b\u624b\u9806\u306f\u3001\u3059\u3079\u3066\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5c64\u306b\u59d4\u306d\u3089\u308c\u3066\u3044\u307e\u3059\u3002\u3064\u307e\u308a\u3001UDP\u4e0a\u306b\u69cb\u7bc9\u3055\u308c\u305f\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306f\u3001\u5177\u4f53\u7684\u306a\u30b1\u30fc\u30b9\u306b\u5fdc\u3058\u3066\u63a1\u7528\u3059\u308b\u6226\u7565\u3092\u9078\u3076\u3053\u3068\u304c\u3067\u304d\u3001\u307e\u305f\u3001\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u3092\u907f\u3051\u308b\u305f\u3081\u306b\u30c1\u30a7\u30c3\u30af\u30b5\u30e0\u306e\u3088\u3046\u306a<a href=\"https:\/\/wikipedia.org\/wiki\/Link_layer\">\u30ea\u30f3\u30af\u5c64<\/a>\u306e\u8981\u7d20\u3082\u6d3b\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>UDP\u306fTCP\u3068\u540c\u69d8\u306b\u5e83\u304f\u666e\u53ca\u3057\u3066\u304a\u308a\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u306b\u63a5\u7d9a\u3055\u308c\u3066\u3044\u308b\u3055\u307e\u3056\u307e\u306a\u6a5f\u5668\u306e\u30d5\u30a1\u30fc\u30e0\u30a6\u30a7\u30a2\u306e\u66f4\u65b0\u3084\u3001\u30aa\u30da\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u30b7\u30b9\u30c6\u30e0\u306e\u5927\u5e45\u306a\u5909\u66f4\u306a\u3057\u3067\u3001\u6539\u5584\u3092\u5b9f\u73fe\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<blockquote><p>\u30e6\u30fc\u30b6\u30fc\u3068\u5230\u9054\u5148\u306e\u30b5\u30fc\u30d0\u30fc\u3068\u306e\u9593\u306b\u306f\u3001TCP\u307e\u305f\u306fUDP\u3057\u304b\u8a31\u53ef\u3057\u306a\u3044\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3001NAT\u3001\u30eb\u30fc\u30bf\u30fc\u306a\u3069\u306e\u4e2d\u9593\u6a5f\u5668\u304c\u591a\u6570\u5b58\u5728\u3059\u308b\u305f\u3081\u3001\u65b0\u3057\u3044\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u5c0e\u5165\u306f\u96e3\u3057\u304f\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u2212<a href=\"https:\/\/daniel.haxx.se\/http3-explained\/\">HTTP\/3\u306e\u8aac\u660e<\/a><\/p><\/blockquote>\n<p>\u65b0\u3057\u3044HTTP\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u69cb\u7bc9\u3059\u308b\u306b\u3042\u305f\u308a\u518d\u767a\u660e\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u65e2\u5b58\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b9\u30bf\u30c3\u30af\u306e\u4e0a\u306b\u69cb\u7bc9\u3057\u305f\u7406\u7531\u3092\u7406\u89e3\u3059\u308b\u306b\u306f\u3001<a href=\"https:\/\/news.ycombinator.com\/item?id=12021195\">Hacker News\u306e\u3053\u306e\u30b9\u30ec\u30c3\u30c9<\/a>\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\uff08\u305d\u308c\u4ee5\u5916\u306e\u5185\u5bb9\u3082\u6709\u7528\u3067\u3059\uff09\u3002<\/p>\n<p>UDP\u306e\u30d1\u30b1\u30c3\u30c8\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u306f\u6700\u5c0f\u9650\u306e\u4ed5\u69d8\u3067\u3001\u305d\u306e\u30d8\u30c3\u30c0\u306f\u3001\u9001\u4fe1\u5143\u30dd\u30fc\u30c8\u3001\u5b9b\u5148\u30dd\u30fc\u30c8\u3001\u30d1\u30b1\u30c3\u30c8\u9577\uff08\u30d0\u30a4\u30c8\uff09\u3001\u30d1\u30b1\u30c3\u30c8\u30c7\u30fc\u30bf\u3001\u30c1\u30a7\u30c3\u30af\u30b5\u30e0\u304b\u3089\u306a\u308a\u307e\u3059\u3002\u30c1\u30a7\u30c3\u30af\u30b5\u30e0\u306f\u3001\u30d1\u30b1\u30c3\u30c8\u306e\u30d8\u30c3\u30c0\u90e8\u3068\u30c7\u30fc\u30bf\u90e8\u306e\u4e21\u65b9\u306b\u3064\u3044\u3066\u30c7\u30fc\u30bf\u306e\u6574\u5408\u6027\u306e\u78ba\u8a8d\u306b\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u30c1\u30a7\u30c3\u30af\u30b5\u30e0\u306f\u3001\u57fa\u790e\u3068\u306a\u308b\u30d7\u30ed\u30c8\u30b3\u30eb\u5c64\u304cIPv4\u306e\u5834\u5408\u306f\u30aa\u30d7\u30b7\u30e7\u30f3\u3001IPv6\u306e\u5834\u5408\u306f\u5fc5\u9808\u3068\u306a\u308a\u307e\u3059\u3002\u3053\u308c\u307e\u3067UDP\u306f\u3001\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u30b7\u30b9\u30c6\u30e0\u306e\u6642\u523b\u540c\u671f\uff08<a href=\"https:\/\/en.wikipedia.org\/wiki\/Network_Time_Protocol\">NTP<\/a>\uff09\u3001VoIP\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3001\u30d3\u30c7\u30aa\u30b9\u30c8\u30ea\u30fc\u30df\u30f3\u30b0\u3001DNS\u30b7\u30b9\u30c6\u30e0\u3001<a href=\"https:\/\/wikipedia.org\/wiki\/Dynamic_Host_Configuration_Protocol\">DHCP<\/a>\u306a\u3069\u306b\u4f7f\u7528\u3055\u308c\u3066\u304d\u307e\u3057\u305f\u3002<\/p>\n<h2 id=\"quic-http3\">QUIC\u3068HTTP\/3<\/h2>\n<p>QUIC\uff08Quick UDP Internet Connections\uff09\u306f\u30012012\u5e74\u306bGoogle\u306b\u3088\u308a\u521d\u3081\u3066\u5c0e\u5165\u3055\u308c\u307e\u3057\u305f\u3002\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5c64\u306e\u5883\u754c\u3092\u518d\u5b9a\u7fa9\u3057\u3001\u4e0b\u4f4d\u30ec\u30d9\u30eb\u3092UDP\u306b\u4f9d\u5b58\u3057\u3001\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u3001\u4fe1\u983c\u6027\u6a5f\u80fd\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u6a5f\u80fd\u3092\u300c\u30e6\u30fc\u30b6\u30fc\u7a7a\u9593\u300d\u3067\u518d\u5b9a\u7fa9\u3059\u308b\u3053\u3068\u3067\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30b7\u30b9\u30c6\u30e0\u5168\u4f53\u306e\u30ab\u30fc\u30cd\u30eb\u306e\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u3092\u4e0d\u8981\u3068\u3057\u307e\u3057\u305f\u3002<\/p>\n<figure style=\"width: 1865px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2019\/03\/http2-stack-vs-http3-stack.png\" alt=\"HTTP\/2\u30b9\u30bf\u30c3\u30af\u3068HTTP\/3\u30b9\u30bf\u30c3\u30af\u306e\u6bd4\u8f03\" width=\"1865\" height=\"671\"><figcaption class=\"wp-caption-text\">HTTP\/2\u30b9\u30bf\u30c3\u30af\u3068HTTP\/3\u30b9\u30bf\u30c3\u30af\u306e\u6bd4\u8f03<\/figcaption><\/figure>\n<p>HTTP\/2\u306e\u524d\u9032\u306b\u306fGoogle\u306e<a href=\"https:\/\/kinsta.com\/jp\/docs\/wordpress-hosting\/wordpress-cdn\/kinsta-cdn\/#kinstas-cdn\">SPDY<\/a>\u304c\u5148\u97ad\u3092\u3064\u3051\u307e\u3057\u305f\u304c\u3001\u540c\u69d8\u306bHTTP\/3\u3082\u3053\u308c\u3089\u306e\u6210\u679c\u3092\u57fa\u306b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>HTTP\/2\u306f\u591a\u91cd\u5316\u3092\u5b9f\u73fe\u3057\u3001\u30d8\u30c3\u30c9\u30aa\u30d6\u30e9\u30a4\u30f3\u30d6\u30ed\u30c3\u30ad\u30f3\u30b0\uff08\u5148\u982d\u306e\u30d1\u30b1\u30c3\u30c8\u306e\u8ee2\u9001\u30a8\u30e9\u30fc\u6642\u3001\u518d\u9001\u3059\u308b\u307e\u3067\u5f8c\u7d9a\u306e\u30d1\u30b1\u30c3\u30c8\u304c\u30d6\u30ed\u30c3\u30af\u3055\u308c\u308b\u3053\u3068\uff09\u3092\u7de9\u548c\u3057\u307e\u3057\u305f\u304c\u3001TCP\u306b\u3088\u308b\u5236\u7d04\u306f\u6b8b\u308a\u307e\u3059\u3002\u30c7\u30fc\u30bf\u8ee2\u9001\u306e\u969b\u3001\u591a\u91cd\u5316\u3057\u305f\u8907\u6570\u30b9\u30c8\u30ea\u30fc\u30e0\u306f\u5358\u4e00\u306eTCP\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u3092\u4f7f\u7528\u3067\u304d\u307e\u3059\u304c\u3001\u30b9\u30c8\u30ea\u30fc\u30e0\u306e1\u3064\u3067\u30d1\u30b1\u30c3\u30c8\u30ed\u30b9\u304c\u767a\u751f\u3059\u308b\u3068\u3001TCP\u304c\u5931\u308f\u308c\u305f\u30d1\u30b1\u30c3\u30c8\u3092\u518d\u9001\u3059\u308b\u307e\u3067\u3001<strong>\u63a5\u7d9a\u5168\u4f53\u304a\u3088\u3073\u305d\u306e\u3059\u3079\u3066\u306e\u30b9\u30c8\u30ea\u30fc\u30e0\u304c\u4eba\u8cea\u306b\u53d6\u3089\u308c\u305f\u72b6\u614b\u306b\u306a\u308a\u307e\u3059<\/strong>\u3002<\/p>\n<p>\u3053\u308c\u306f\u3001\u305f\u3068\u3048\u5b9b\u5148\u30ce\u30fc\u30c9\u306e\u30d0\u30c3\u30d5\u30a1\u306b\u3001\u3059\u3067\u306b\u9001\u4fe1\u3055\u308c\u3066\u5f85\u6a5f\u3057\u3066\u3044\u308b\u30d1\u30b1\u30c3\u30c8\u304c\u3042\u3063\u305f\u3068\u3057\u3066\u3082\u3001\u5931\u308f\u308c\u305f\u30d1\u30b1\u30c3\u30c8\u304c\u518d\u9001\u3055\u308c\u308b\u307e\u3067\u3001\u3059\u3079\u3066\u306e\u30d1\u30b1\u30c3\u30c8\u304c\u30d6\u30ed\u30c3\u30af\u3055\u308c\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002<a href=\"https:\/\/daniel.haxx.se\/\">Daniel Stenberg\u6c0f\u306f\u3001http\/3\u306b\u95a2\u3059\u308b\u8457\u66f8<\/a>\u306e\u4e2d\u3067\u3001\u3053\u308c\u3092\u300cTCP\u30d9\u30fc\u30b9\u306e\u30d8\u30c3\u30c9\u30aa\u30d6\u30e9\u30a4\u30f3\u30d6\u30ed\u30c3\u30af\u300d\u3068\u547c\u3093\u3067\u3044\u307e\u3059\u3002\u5f7c\u306f\u30012%\u306e\u30d1\u30b1\u30c3\u30c8\u30ed\u30b9\u304c\u3042\u308b\u5834\u5408\u3001\u30e6\u30fc\u30b6\u30fc\u304c\u3053\u306e\u30ea\u30b9\u30af\u3092\u56de\u907f\u3059\u308b\u306b\u306f\u3001HTTP\/1\u306e6\u3064\u306e\u63a5\u7d9a\u306e\u65b9\u304c\u826f\u3044\u3068\u4e3b\u5f35\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p><strong>QUIC\u306b\u3053\u306e\u5236\u7d04\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/strong>QUIC\u306f\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u30ec\u30b9\u306eUDP\u3092\u30d9\u30fc\u30b9\u306b\u3057\u3066\u3044\u308b\u305f\u3081\u3001\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u306e\u6982\u5ff5\u306bTCP\u306e\u3088\u3046\u306a\u5236\u9650\u306f\u306a\u304f\u30011\u3064\u306e\u30b9\u30c8\u30ea\u30fc\u30e0\u306e\u969c\u5bb3\u304c\u4ed6\u306e\u30b9\u30c8\u30ea\u30fc\u30e0\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u3053\u3068\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>Cloudflare\u793e\u306e<a href=\"https:\/\/twitter.com\/SimmerVigor\">Lucas Pardue\u6c0f<\/a>\u306e\u30b3\u30e1\u30f3\u30c8\u3067\u3059\u3002<\/p>\n<figure style=\"width: 1091px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2019\/03\/Lucas-pardue-http3-.png\" alt=\"Lucas Pardue\u6c0f\u306eHTTP\/3\u306b\u95a2\u3059\u308b\u30b3\u30e1\u30f3\u30c8\" width=\"1091\" height=\"381\"><figcaption class=\"wp-caption-text\">Lucas Pardue\u6c0f\u306eHTTP\/3\u306b\u95a2\u3059\u308b\u30b3\u30e1\u30f3\u30c8<\/figcaption><\/figure>\n<p>UDP\u30b9\u30c8\u30ea\u30fc\u30e0\u3092\u4f7f\u7528\u3059\u308bQUIC\u306f\u30011\u3064\u306eTCP\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u306b\u4f9d\u5b58\u305b\u305a\u306b\u591a\u91cd\u5316\u3092\u5b9f\u73fe\u3057\u307e\u3059\u3002QUIC\u306f\u3001TCP\u3088\u308a\u3082\u9ad8\u3044\u30ec\u30d9\u30eb\u3067\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u3092\u69cb\u7bc9\u3057\u307e\u3059\u3002QUIC\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u65b0\u3057\u3044\u30b9\u30c8\u30ea\u30fc\u30e0\u304c\u4ed6\u306e\u30b9\u30c8\u30ea\u30fc\u30e0\u306e\u7d42\u4e86\u3092\u5f85\u3064\u3053\u3068\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u307e\u305f\u3001QUIC\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001TCP\u306e\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u306e\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u304c\u4e0d\u8981\u306a\u305f\u3081\u3001\u30ec\u30a4\u30c6\u30f3\u30b7\u30fc\u304c\u6e1b\u5c11\u3059\u308b\u30e1\u30ea\u30c3\u30c8\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>Cisco\u304c\u3001TCP\u306e3\u30a6\u30a7\u30a4\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u3092\u8aac\u660e\u3059\u308b\u9762\u767d\u3044\u30d3\u30c7\u30aa\u3092\u4f5c\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<p><kinsta-video src=\"https:\/\/www.youtube.com\/watch?v=LyDqA-dAPW4\"><\/kinsta-video><\/p>\n<p>QUIC\u3067\u306fTCP\u306e\u4fe1\u983c\u6027\u6a5f\u80fd\u304c\u306a\u3044\u4ee3\u308f\u308a\u306b\u3001UDP\u5c64\u4ee5\u4e0a\u3067\u30d1\u30b1\u30c3\u30c8\u306e\u518d\u9001\u3084\u9806\u5e8f\u4ed8\u3051\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002Google Cloud Platform\u3067\u306f\u30012018\u5e74\u306b\u30ed\u30fc\u30c9\u30d0\u30e9\u30f3\u30b5\u30fc\u306e<a href=\"https:\/\/cloudplatform.googleblog.com\/2018\/06\/Introducing-QUIC-support-for-HTTPS-load-balancing.html\">QUIC\u5bfe\u5fdc\u3092\u5c0e\u5165\u3057<\/a>\u3001<strong>\u5e73\u5747\u30da\u30fc\u30b8\u30ed\u30fc\u30c9\u30bf\u30a4\u30e0\u304c\u30b0\u30ed\u30fc\u30d0\u30eb\u3067<\/strong><strong>8\uff05<\/strong>\u3001\u30ec\u30a4\u30c6\u30f3\u30b7\u30fc\u306e\u9ad8\u3044\u5730\u57df\u3067\u306f\u6700\u592713\uff05\u6539\u5584\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n<p>Google Chrome\u3001YouTube\u3001Gmail\u3001Google\u691c\u7d22\u3001\u305d\u306e\u4ed6\u306e\u30b5\u30fc\u30d3\u30b9\u9593\u3067\u3001Google\u306f\u3001IETF\u3092\u5f85\u305f\u305a\u306b\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u4e0a\u306e\u304b\u306a\u308a\u306e\u90e8\u5206\u3067QUIC\u3092\u5c0e\u5165\u3057\u307e\u3057\u305f\u30022017\u5e74\u3001Google\u306e\u30a8\u30f3\u30b8\u30cb\u30a2\u306f\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u306e\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306e7\uff05\u304c\u3059\u3067\u306bQUIC\u3067\u884c\u308f\u308c\u3066\u3044\u308b\u3068\u4e3b\u5f35\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>Google\u30d0\u30fc\u30b8\u30e7\u30f3\u306eQUIC\u306f\u3001HTTP\/2\u306e\u69cb\u6587\u3092\u4f7f\u7528\u3057\u305fHTTP\u30c8\u30e9\u30f3\u30b9\u30dd\u30fc\u30c8\u306e\u307f\u306b\u30d5\u30a9\u30fc\u30ab\u30b9\u3057\u3066\u3044\u307e\u3057\u305f\u304c\u3001QUIC\u306e\u6a19\u6e96\u5316\u3092\u62c5\u3046IETF\u306f\u3001IETF\u30d0\u30fc\u30b8\u30e7\u30f3\u306eQUIC\u3092\u3001HTTP\u4ee5\u5916\u306e\u30c8\u30e9\u30f3\u30b9\u30dd\u30fc\u30c8\u3067\u3082\u5229\u7528\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u3079\u304d\u3068\u6c7a\u5b9a\u3057\u307e\u3057\u305f\u3002\u3057\u304b\u3057\u3001\u73fe\u5728\u306e\u3068\u3053\u308d\u3001QUIC\u3092\u4f7f\u7528\u3057\u305fHTTP\u4ee5\u5916\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u306b\u95a2\u3059\u308b\u4f5c\u696d\u306f\u4fdd\u7559\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u3055\u3089\u306b\u3001IETF\u306e\u30ef\u30fc\u30ad\u30f3\u30b0\u30b0\u30eb\u30fc\u30d7\u306f\u3001\u6a19\u6e96\u5316\u30d0\u30fc\u30b8\u30e7\u30f3\u3067\u306f\u3001Google\u306e\u30ab\u30b9\u30bf\u30e0\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u3067\u306f\u306a\u304f\u3001<a href=\"https:\/\/kinsta.com\/jp\/blog\/tls-1-3\/\">TLS 1.3<\/a>\u306e\u6697\u53f7\u5316\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3092\u6c7a\u5b9a\u3057\u307e\u3057\u305f\u3002TLS 1.3\u306f\u3001\u53e4\u3044\u30d0\u30fc\u30b8\u30e7\u30f3\u3068\u6bd4\u8f03\u3057\u3066\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u306e\u30e9\u30a6\u30f3\u30c9\u30c8\u30ea\u30c3\u30d7\u304c\u5c11\u306a\u3044\u305f\u3081\u3001\u30d7\u30ed\u30c8\u30b3\u30eb\u901f\u5ea6\u3092\u5411\u4e0a\u3057\u307e\u3059\u3002<strong>Kinsta\u3067\u306f\u3059\u3079\u3066\u306e\u30b5\u30fc\u30d0\u30fc\u3068Kinsta CDN\u3067TLS 1.3\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u3059\u3002<\/strong><\/p>\n<p>\u73fe\u5728\u3082Google\u306f\u3001\u88fd\u54c1\u306b\u72ec\u81ea\u306eQUIC\u3092\u4f7f\u3044\u7d9a\u3051\u3066\u3044\u307e\u3059\u304c\u3001\u4e00\u65b9\u3067IETF\u306e\u898f\u683c\u306b\u5411\u3051\u305f\u958b\u767a\u306b\u3082\u52aa\u3081\u3066\u3044\u307e\u3059\u3002\u4ed6\u306e\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u4f01\u696d\u306e\u307b\u3068\u3093\u3069\u306f\u3001IETF\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u30d9\u30fc\u30b9\u306b\u958b\u767a\u3092\u9032\u3081\u3066\u3044\u307e\u3059\u3002\u306a\u304a\u3001\u3053\u306e2\u3064\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u306f\u6697\u53f7\u5316\u4ee5\u5916\u306e\u9762\u3067\u3082\u7570\u306a\u308b\u70b9\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>Chrome\u30c7\u30d9\u30ed\u30c3\u30d1\u30fc\u30c4\u30fc\u30eb\u3092\u958b\u304d\u3001\u300c\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u300d\u30bf\u30d6\u306e\u300c\u30d7\u30ed\u30c8\u30b3\u30eb\u300d\u5217\u306bGmail\u306a\u3069\u306eGoogle\u306e\u88fd\u54c1\u3092\u30ed\u30fc\u30c9\u3059\u308b\u3068\u3001Google\u30d0\u30fc\u30b8\u30e7\u30f3\u306eQUIC\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u591a\u304f\u306e\u30ea\u30bd\u30fc\u30b9\u304c\u8aad\u307f\u8fbc\u307e\u308c\u3066\u3044\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u30a2\u30ca\u30ea\u30c6\u30a3\u30af\u30b9\u3084Google Tag Manager\u306a\u3069\u306eGoogle\u88fd\u54c1\u306b\u3064\u3044\u3066\u3082\u540c\u69d8\u3067\u3059\u3002<\/p>\n<figure style=\"width: 2014px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2019\/03\/google-service-loading-QUIC.png\" alt=\"Google\u306e\u30b5\u30fc\u30d3\u30b9QUIC\" width=\"2014\" height=\"838\"><figcaption class=\"wp-caption-text\">Google\u306e\u30b5\u30fc\u30d3\u30b9QUIC<\/figcaption><\/figure>\n<p>Cloudflare\u306f\u6700\u8fd1\u3001\u6a19\u6e96\u5316\u306e\u9032\u6357\u72b6\u6cc1\u306b\u3064\u3044\u3066<a href=\"https:\/\/blog.cloudflare.com\/http-3-from-root-to-tip\/\">\u975e\u5e38\u306b\u5e83\u7bc4\u306a\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8<\/a>\u3092\u767a\u8868\u3057\u307e\u3057\u305f\u3002<\/p>\n<p>UDP\u306fQUIC\u3068HTTP\/3\u306b\u7279\u5b9a\u306e\u30e1\u30ea\u30c3\u30c8\u3092\u3082\u305f\u3089\u3059\u4e00\u65b9\u3067\u3001\u3044\u304f\u3064\u304b\u306e\u61f8\u5ff5\u70b9\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>TCP\u306f\u4f55\u5e74\u3082\u306e\u9593\u3001\u4e3b\u6d41\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3042\u3063\u305f\u306e\u306b\u5bfe\u3057\u3001UDP\u306f\u305d\u3046\u3067\u306f\u306a\u304f\u3001\u30aa\u30da\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u30b7\u30b9\u30c6\u30e0\u3068\u305d\u306e\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u30b9\u30bf\u30c3\u30af\u306f\u3001\u5b8c\u5168\u306b\u6700\u9069\u5316\u3055\u308c\u3066\u3044\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u305d\u306e\u7d50\u679c\u3001QUIC\u306eCPU\u8ca0\u8377\u3084\u8981\u4ef6\u306f\u3001HTTP\/2\u306e2\u500d\u3068\u3044\u3046\u8a66\u7b97\u3082\u3042\u308b\u307b\u3069\u3002<\/p>\n<p>\u6700\u9069\u5316\u306f\u3001\u30aa\u30da\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u30b7\u30b9\u30c6\u30e0\u306e\u30ab\u30fc\u30cd\u30eb\u3084\u3001<a href=\"https:\/\/electronics.stackexchange.com\/questions\/246184\/how-does-the-tcp-ip-stack-interact-with-wifi-components\">\u3055\u307e\u3056\u307e\u306a\u30eb\u30fc\u30bf\u30fc\u3084\u30c7\u30d0\u30a4\u30b9\u306e\u30d5\u30a1\u30fc\u30e0\u30a6\u30a7\u30a2<\/a>\u306b\u307e\u3067\u6df1\u304f\u53ca\u3073\u307e\u3059\u3002\u6280\u8853\u7684\u306a\u8208\u5473\u304c\u3042\u308b\u65b9\u306f\u3001\u3088\u308a\u8a73\u7d30\u306a\u60c5\u5831\u3068\u3057\u3066\u300c<a href=\"https:\/\/access.redhat.com\/sites\/default\/files\/attachments\/20150325_network_performance_tuning.pdf\">Red Hat\u30c1\u30e5\u30fc\u30cb\u30f3\u30b0\u30ac\u30a4\u30c9<\/a>\u300d\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>QUIC\u306f\u3001\u3088\u308a\u30df\u30cb\u30de\u30eb\u3067\u67d4\u8edf\u306a\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u4e0a\u306b\u3001TCP\u306e\u6a5f\u80fd\u3092\u518d\u69cb\u7bc9\u3057\u3088\u3046\u3068\u3057\u3066\u3044\u308b\u3068\u8a00\u3048\u307e\u3059\u3002<\/p>\n<p>\u5148\u306b\u7d39\u4ecb\u3057\u305fQUIC\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u306f\u3001TLS\u3068\u30c8\u30e9\u30f3\u30b9\u30dd\u30fc\u30c8\u306e\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u306e\u7d44\u307f\u5408\u308f\u305b\u3067\u3059\u3002\u63a5\u7d9a\u304c\u78ba\u7acb\u3055\u308c\u308b\u3068\u3001\u56fa\u6709\u306eCID\uff08\u30b3\u30cd\u30af\u30b7\u30e7\u30f3ID\uff09\u306b\u3088\u3063\u3066\u8b58\u5225\u3055\u308c\u307e\u3059\u3002\u3053\u306eID\u306f\u3001IP\u304c\u5909\u66f4\u3055\u308c\u3066\u3082\u4fdd\u6301\u3055\u308c\u308b\u305f\u3081\u3001\u4f8b\u3048\u30704G\u304b\u3089WiFi\u306b\u5909\u66f4\u3057\u305f\u5834\u5408\u3067\u3082\u3001\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u304c\u4e2d\u65ad\u3055\u308c\u307e\u305b\u3093\u3002\u3053\u308c\u306f\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u304c\u307e\u3059\u307e\u3059\u30e2\u30d0\u30a4\u30eb\u6a5f\u5668\u3067\u884c\u308f\u308c\u308b\u3053\u3068\u3092\u8003\u3048\u308b\u3068\u3001\u7279\u306b\u91cd\u8981\u3067\u3059\u3002\u9006\u306b\u3053\u306e\u8981\u7d20\u306f\u3001\u7570\u306a\u308b\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u3084\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30d7\u30ed\u30d0\u30a4\u30c0\u9593\u3067\u306e\u30e6\u30fc\u30b6\u30fc\u8ffd\u8de1\u3092\u5bb9\u6613\u306b\u3059\u308b\u305f\u3081\u306bGoogle\u304c\u8003\u6848\u3057\u305f\u3082\u306e\u3067\u306f\u306a\u3044\u304b\u3068\u3044\u3046\u7591\u554f\u304c\u751f\u3058\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002<\/p>\n<p>TLS\u306f\u5fc5\u9808\u3067\u3042\u308a\u3001\u4e2d\u9593\u306b\u4f4d\u7f6e\u3059\u308b\u30c7\u30d0\u30a4\u30b9\u306b\u3088\u308b\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306e\u6539\u3056\u3093\u3084\u76d7\u8074\u3092\u56f0\u96e3\u306b\u3057\u307e\u3059\u3002\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u3084\u3001Cisco\u306e\u3088\u3046\u306a\u30d9\u30f3\u30c0\u30fc\u304cUDP\u3092\u554f\u984c\u8996\u3057\u3001\u7121\u52b9\u306b\u3059\u308b\u65b9\u6cd5\u3092\u63d0\u4f9b\u3057\u3066\u3044\u308b\u306e\u306f\u4e0d\u601d\u8b70\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u4e2d\u9593\u306b\u3044\u308b\u4eba\u304cQUIC\u306e\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u691c\u67fb\u3001\u76e3\u8996\u3001\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3059\u308b\u3053\u3068\u306f\u56f0\u96e3\u3067\u3059\u3002<\/p>\n<p>QUIC\u30b9\u30c8\u30ea\u30fc\u30e0\u306f\u3001\u5358\u65b9\u5411\u307e\u305f\u306f\u53cc\u65b9\u5411\u306eQUIC\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u3092\u4ecb\u3057\u3066\u9001\u4fe1\u3055\u308c\u307e\u3059\u3002\u30b9\u30c8\u30ea\u30fc\u30e0\u306b\u306fID\u304c\u3042\u308a\u3001\u30a4\u30cb\u30b7\u30a8\u30fc\u30bf\u30fc\u3084\u3001\u30b9\u30c8\u30ea\u30fc\u30e0\u304c\u5358\u65b9\u5411\u304b\u53cc\u65b9\u5411\u304b\u3092\u8b58\u5225\u3057\u3001\u30b9\u30c8\u30ea\u30fc\u30e0\u5185\u306e\u30d5\u30ed\u30fc\u5236\u5fa1\u306b\u3082\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>QUIC\u304c\u30c8\u30e9\u30f3\u30b9\u30dd\u30fc\u30c8\u5c64\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3042\u308b\u306e\u306b\u5bfe\u3057\u3001HTTP\u306f\u305d\u306e\u4e0a\u306e\u5c64\u3067\u3042\u308b\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5c64\u30d7\u30ed\u30c8\u30b3\u30eb\u3001\u307e\u305f\u306f\u5358\u306b\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3059\u3002<\/p>\n<p>\u5f8c\u65b9\u4e92\u63db\u6027\u304c\u6700\u3082\u91cd\u8981\u3067\u3042\u308b\u305f\u3081\u3001IETF\u304c\u63a8\u9032\u3059\u308bHTTP\/3\u306e\u5b9f\u88c5\u3067\u306f\u3001\u30ec\u30b9\u30dd\u30f3\u30b9\u306b\u53e4\u3044\u30d0\u30fc\u30b8\u30e7\u30f3\uff08HTT1\u307e\u305f\u306fHTTP\/2\uff09\u304c\u542b\u307e\u308c\u307e\u3059\u3002\u307e\u305f\u3001<a href=\"https:\/\/tools.ietf.org\/html\/rfc7838\">RFC7838<\/a>\u306b\u3042\u308b\u3088\u3046\u306b\u3001\u30dd\u30fc\u30c8\u3084\u30db\u30b9\u30c8\u60c5\u5831\u3068\u3068\u3082\u306b\u3001HTTP\/3\u304c\u5229\u7528\u53ef\u80fd\u3067\u3042\u308b\u3053\u3068\u3092\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306b\u901a\u77e5\u3059\u308b\u30d8\u30c3\u30c0\u30fc\u3082\u542b\u307e\u308c\u307e\u3059\u3002<\/p>\n<p>\u3053\u308c\u306f\u3001<a href=\"https:\/\/kinsta.com\/jp\/blog\/tls-vs-ssl\/\">TLS\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af<\/a>\u5185\u3067\u30c8\u30e9\u30f3\u30b9\u30dd\u30fc\u30c8\u3092\u30cd\u30b4\u30b7\u30a8\u30fc\u30c8\u3067\u304d\u308bHTTP\/2\u3068\u306f\u7570\u306a\u308a\u307e\u3059\u3002\u3057\u304b\u3057\u3001IETF\u304cQUIC\u30d9\u30fc\u30b9\u306eHTTP\/3\u3092\u6b21\u671f\u6a19\u6e96\u3068\u3057\u3066\u307b\u307c\u63a1\u7528\u3057\u305f\u3053\u3068\u304b\u3089\u3001Web\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306f\u307e\u3059\u307e\u3059HTTP\/3\u3092\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u3067\u3057\u3087\u3046\u3002\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306f\u3001\u4ee5\u524d\u306eHTTP\/3\u63a5\u7d9a\u304b\u3089\u306e\u30c7\u30fc\u30bf\u3092\u30ad\u30e3\u30c3\u30b7\u30e5\u3057\u3001\u540c\u3058\u30db\u30b9\u30c8\u306b\u6b21\u56de\u30a2\u30af\u30bb\u30b9\u3059\u308b\u969b\u306b\u306f\u76f4\u63a5\u63a5\u7d9a\uff08\u30bc\u30ed\u30e9\u30a6\u30f3\u30c9\u30c8\u30ea\u30c3\u30d7\u30010-RTT)\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n<h2>\u307e\u3068\u3081<\/h2>\n<p>HTTP\/2\u898f\u683c\u304c\u307e\u3060\u5b8c\u5168\u306b\u63a1\u7528\u3055\u308c\u3066\u3044\u306a\u3044\u72b6\u6cc1\u3067\u3001HTTP\/3\u3092\u63a8\u9032\u3059\u308b\u306e\u306f\u6642\u671f\u5c1a\u65e9\u3067\u306f\u306a\u3044\u304b\u3068\u8003\u3048\u308b\u4eba\u3082\u3044\u307e\u3059\u3002\u3053\u308c\u306f\u59a5\u5f53\u306a\u6307\u6458\u3067\u3059\u304c\u3001\u5148\u306b\u8ff0\u3079\u305f\u3088\u3046\u306b\u3001\u3053\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u306f\u3059\u3067\u306b\u5927\u898f\u6a21\u306a\u30c6\u30b9\u30c8\u3068\u5b9f\u88c5\u304c\u884c\u308f\u308c\u3066\u3044\u307e\u3059\u3002Google\u306f<a href=\"https:\/\/www.theregister.co.uk\/2015\/04\/17\/google_quic_test_results\/\">2015\u5e74<\/a>\u306b\u30c6\u30b9\u30c8\u3092\u958b\u59cb\u3057\u3001<a href=\"https:\/\/code.fb.com\/networking-traffic\/building-zero-protocol-for-fast-secure-mobile-connections\/\">2017\u5e74<\/a>\u306b\u306fFacebook\u3082\u30c6\u30b9\u30c8\u3092\u958b\u59cb\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>2026\u5e74\u306f\u3001Google Chrome\u3084Brave\u306e\u3088\u3046\u306a\u4e3b\u8981\u30d6\u30e9\u30a6\u30b6\u304cHTTP\/3\u3092\u30b5\u30dd\u30fc\u30c8\u3002\u30a4\u30f3\u30d5\u30e9\u9762\u3067\u306f\u3001<a href=\"https:\/\/docs.litespeedtech.com\/cp\/cpanel\/quic-http3\/\">Litespeed<\/a>\u3084<a href=\"https:\/\/www.nginx.com\/blog\/introducing-technology-preview-nginx-support-for-quic-http-3\/\">Nginx<\/a>\u306e\u3088\u3046\u306a\u30a6\u30a7\u30d6\u30b5\u30fc\u30d0\u30fc\u304cHTTP\/3\u3092\u5b9f\u88c5\u3057\u3066\u304a\u308a\u3001Cloudflare\u306e\u3088\u3046\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u306f<a href=\"https:\/\/blog.cloudflare.com\/http3-the-past-present-and-future\/\">HTTP\/3\u306b\u5b8c\u5168\u5bfe\u5fdc<\/a>\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u73fe\u6642\u70b9\u3067\u306f\u3001HTTP\/3\u306f\u307e\u3060\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30c9\u30e9\u30d5\u30c8\u306e\u6bb5\u968e\u306b\u3042\u308a\u3001\u6700\u65b0\u306e\u6539\u8a02\u7248\u306f2021\u5e748\u6708\u306b\u671f\u9650\u5207\u308c\u3068\u306a\u308a\u307e\u3059\u3002\u4eca\u5e74\u306f\u4e3b\u8981\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u30d9\u30f3\u30c0\u30fc\u304c\u65b0\u3057\u3044\u6a19\u6e96\u3092\u5b9f\u88c5\u3057\u59cb\u3081\u308b\u3053\u3068\u304c\u4e88\u60f3\u3055\u308c\u308b\u305f\u3081\u3001\u6ce8\u76ee\u3057\u305f\u3044\u3068\u3053\u308d\u3067\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>TL;DR 2018\u5e7411\u6708\u3001\u30d0\u30f3\u30b3\u30af\u3067IETF\uff08I &#8230;<\/p>\n","protected":false},"author":93,"featured_media":32196,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_kinsta_gated_content":false,"_kinsta_gated_content_redirect":"","footnotes":""},"tags":[309,310],"topic":[837],"class_list":["post-32192","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","tag-http3","tag-quic","topic-wordpress-tips"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.6 (Yoast SEO v24.6) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>HTTP\/3\u3068\u306f\u4f55\u304b\uff1f\u2212UDP\u30d9\u30fc\u30b9\u306e\u9ad8\u901f\u65b0\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u6982\u8981<\/title>\n<meta name=\"description\" content=\"HTTP\/3\u306f\u3001Hypertext Transfer 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