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4ca07a56-54e8-4be8-a05f-3d7a46af6ce4 --><\/p>\n<p><!-- notionvc: 157b149c-c378-4729-b9c4-f560ab1a6a3e --><\/p>\n<h2>HTTP\/3\u3068\u30c8\u30e9\u30f3\u30b9\u30dd\u30fc\u30c8\u5c64\u306e\u95a2\u4fc2<\/h2>\n<p>QUIC\u306e\u666e\u53ca\u3092\u8c61\u5fb4\u3059\u308b\u5b58\u5728\u304c<strong>HTTP\/3<\/strong>\u3067\u3059\u3002<\/p>\n<p>HTTP\/1.1\u3068HTTP\/2\u306f\u57fa\u672c\u7684\u306bTCP\u4e0a\u3067\u52d5\u4f5c\u3057\u307e\u3059\u3002\u4e00\u65b9\u3001HTTP\/3\u306fQUIC\u4e0a\u306bHTTP\u306e\u901a\u4fe1\u3092\u30de\u30c3\u30d4\u30f3\u30b0\u3059\u308b\u4ed5\u69d8\u3068\u3057\u3066\u6a19\u6e96\u5316\u3055\u308c\u3066\u3044\u307e\u3059\u3002IETF\u306eRFC 9114\u3067\u306f\u3001QUIC\u306e\u30b9\u30c8\u30ea\u30fc\u30e0\u591a\u91cd\u5316\u3001\u30b9\u30c8\u30ea\u30fc\u30e0\u5358\u4f4d\u306e\u30d5\u30ed\u30fc\u5236\u5fa1\u3001\u4f4e\u9045\u5ef6\u306a\u63a5\u7d9a\u78ba\u7acb\u306a\u3069\u3092HTTP\u306e\u901a\u4fe1\u306b\u5229\u7528\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>QUIC\u3067\u306f\u30b9\u30c8\u30ea\u30fc\u30e0\u3092\u72ec\u7acb\u3057\u3066\u6271\u3048\u308b\u305f\u3081\u3001\u3042\u308b\u30c7\u30fc\u30bf\u306e\u640d\u5931\u304c\u5225\u306e\u30b9\u30c8\u30ea\u30fc\u30e0\u306e\u51e6\u7406\u307e\u3067\u4e00\u5f8b\u306b\u6b62\u3081\u308b\u554f\u984c\u3092\u8efd\u6e1b\u3067\u304d\u307e\u3059\u3002\u307e\u305f\u3001\u30e2\u30d0\u30a4\u30eb\u7aef\u672b\u304cWi-Fi\u304b\u3089\u643a\u5e2f\u56de\u7dda\u3078\u79fb\u52d5\u3059\u308b\u3088\u3046\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u7d4c\u8def\u306e\u5909\u5316\u306b\u3082\u5bfe\u5fdc\u3057\u3084\u3059\u3044\u8a2d\u8a08\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u5b9f\u969b\u3001HTTP\/3\u306f\u3059\u3067\u306b\u5b9f\u9a13\u7684\u306a\u6280\u8853\u3068\u3044\u3046\u6bb5\u968e\u3092\u8d8a\u3048\u3066\u3044\u307e\u3059\u3002Cloudflare\u304c2025\u5e74\u306b\u89b3\u6e2c\u3057\u305f\u5168\u4e16\u754c\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u3067\u306f\u3001HTTP\/3\u304c\u7d0421%\u3092\u5360\u3081\u307e\u3057\u305f\u3002\u307e\u305f\u65e5\u672c\u306b\u3064\u3044\u3066\u306f\u3001Cloudflare Radar\u306e2025\u5e745\u6708\u304b\u30892026\u5e745\u6708\u307e\u3067\u306e\u30c7\u30fc\u30bf\u3067HTTP\/3\u304c27.3%\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u3064\u307e\u308a\u3001\u73fe\u4ee3\u306e\u30c8\u30e9\u30f3\u30b9\u30dd\u30fc\u30c8\u5c64\u3092\u8003\u3048\u308b\u3068\u304d\u306b\u306f\u3001<strong>\u300cTCP\u304bUDP\u304b\u300d\u3060\u3051\u3067\u306a\u304f\u3001\u300cTCP\uff0bTLS\uff0bHTTP\/2\u300d\u3068\u300cQUIC\uff0bHTTP\/3\u300d\u3068\u3044\u3046\u69cb\u9020\u306e\u9055\u3044<\/strong>\u307e\u3067\u7406\u89e3\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p><!-- notionvc: 21d0a8af-82b3-4060-ac58-3bb0ce0c415d --><\/p>\n<p><!-- notionvc: b451dc01-a2cc-40be-a563-2069c779a249 --><\/p>\n<h2>\u30c8\u30e9\u30f3\u30b9\u30dd\u30fc\u30c8\u5c64\u306e\u30e1\u30ea\u30c3\u30c8\u3068\u6ce8\u610f\u70b9<\/h2>\n<p>\u30c8\u30e9\u30f3\u30b9\u30dd\u30fc\u30c8\u5c64\u306e\u6700\u5927\u306e\u4fa1\u5024\u306f\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u304c\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u8907\u96d1\u306a\u554f\u984c\u3092\u3059\u3079\u3066\u76f4\u63a5\u51e6\u7406\u3057\u306a\u304f\u3066\u3082\u3088\u3044\u3053\u3068\u3067\u3059\u3002<\/p>\n<p>TCP\u306a\u3089\u4fe1\u983c\u6027\u3084\u9806\u5e8f\u5236\u5fa1\u3001\u30d5\u30ed\u30fc\u5236\u5fa1\u3001\u8f3b\u8f33\u5236\u5fa1\u3092\u5229\u7528\u3067\u304d\u307e\u3059\u3002UDP\u306a\u3089\u5fc5\u8981\u6700\u5c0f\u9650\u306e\u6a5f\u80fd\u3092\u4f7f\u3044\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5074\u3067\u72ec\u81ea\u306e\u5236\u5fa1\u3092\u8ffd\u52a0\u3067\u304d\u307e\u3059\u3002\u305d\u3057\u3066QUIC\u3067\u306f\u3001UDP\u306e\u67d4\u8edf\u6027\u3092\u5229\u7528\u3057\u306a\u304c\u3089\u3001\u4fe1\u983c\u6027\u3001\u6697\u53f7\u5316\u3001\u591a\u91cd\u5316\u3001\u7d4c\u8def\u5909\u66f4\u3078\u306e\u5bfe\u5fdc\u306a\u3069\u3092\u7d44\u307f\u5408\u308f\u305b\u3089\u308c\u307e\u3059\u3002<\/p>\n<p>\u4e00\u65b9\u3001TCP\u306b\u306f\u518d\u9001\u3084\u8f3b\u8f33\u5236\u5fa1\u306b\u4f34\u3046\u9045\u5ef6\u304c\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002UDP\u306f\u8efd\u91cf\u3067\u3042\u308b\u53cd\u9762\u3001\u4fe1\u983c\u6027\u304c\u5fc5\u8981\u306a\u3089\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5074\u3067\u88dc\u5b8c\u3057\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002QUIC\u3082\u4e07\u80fd\u3067\u306f\u306a\u304f\u3001UDP\u901a\u4fe1\u3092\u8a31\u53ef\u3059\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u74b0\u5883\u3084\u3001\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u30fb\u30d7\u30ed\u30ad\u30b7\u306a\u3069\u306e\u904b\u7528\u9762\u3092\u8003\u616e\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u307e\u305f\u3001HTTP\/3\u3092\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u88fd\u54c1\u306a\u3069\u3067\u691c\u67fb\u3059\u308b\u5834\u5408\u306b\u306f\u3001TCP\u3060\u3051\u3092\u524d\u63d0\u3068\u3057\u305f\u4ed5\u7d44\u307f\u3067\u306f\u5bfe\u5fdc\u3067\u304d\u306a\u3044\u30b1\u30fc\u30b9\u304c\u3042\u308a\u307e\u3059\u3002\u5b9f\u969b\u3001HTTP\/3\u306fUDP\u4e0a\u3067\u52d5\u4f5c\u3059\u308b\u305f\u3081\u3001HTTP\/3\u3092\u691c\u67fb\u3059\u308b\u306b\u306fUDP\u30d7\u30ed\u30ad\u30b7\u306a\u3069\u306e\u5bfe\u5fdc\u304c\u5fc5\u8981\u306b\u306a\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p><!-- notionvc: d3849fde-d4b1-4aa6-b661-44fe516923bf 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