{"id":1111,"date":"2026-10-23T01:00:00","date_gmt":"2026-10-22T16:00:00","guid":{"rendered":"https:\/\/quantumsea.net\/?p=1111"},"modified":"2026-10-22T14:26:13","modified_gmt":"2026-10-22T05:26:13","slug":"qs-http-range-if-range-resume-20261022","status":"publish","type":"post","link":"https:\/\/quantumsea.net\/?p=1111","title":{"rendered":"HTTP\u306eRange\u3068If-Range\u3001\u9014\u4e2d\u304b\u3089\u306e\u53d6\u5f97\u3067\u5225\u306e\u7248\u3092\u6df7\u305c\u306a\u3044\u305f\u3081\u306b"},"content":{"rendered":"

\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u304c\u9014\u4e2d\u3067\u5207\u308c\u305f\u3068\u304d\u3001\u3059\u3067\u306b\u53d7\u3051\u53d6\u3063\u305f\u5206\u3092\u6b8b\u3057\u3001\u7d9a\u304d\u3060\u3051\u3092\u53d6\u5f97\u3067\u304d\u308c\u3070\u901a\u4fe1\u91cf\u3092\u6e1b\u3089\u305b\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u540c\u3058URL\u306b\u7f6e\u304b\u308c\u305f\u5185\u5bb9\u304c\u518d\u958b\u307e\u3067\u306b\u66f4\u65b0\u3055\u308c\u3066\u3044\u305f\u3089\u3069\u3046\u306a\u308b\u3067\u3057\u3087\u3046\u304b\u3002\u524d\u534a\u306f\u53e4\u3044\u7248\u3001\u5f8c\u534a\u306f\u65b0\u3057\u3044\u7248\u3068\u3044\u3046\u3001\u3069\u3061\u3089\u306b\u3082\u5b58\u5728\u3057\u306a\u3044\u5185\u5bb9\u3092\u4f5c\u3063\u3066\u3057\u307e\u3046\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002HTTP\u306eRange<\/code>\u3068If-Range<\/code>\u306f\u3001\u53d6\u5f97\u3059\u308b\u4f4d\u7f6e\u3068\u3001\u3064\u306a\u304e\u5408\u308f\u305b\u3066\u3088\u3044\u7248\u3092\u5206\u3051\u3066\u8003\u3048\u308b\u305f\u3081\u306e\u4ed5\u7d44\u307f\u3067\u3059\u3002[1]<\/p>\n

\n

\u7c21\u5358\u306b\u307e\u3068\u3081\u308b\u3068\uff1f<\/strong><\/p>\n

    \n
  • Range\u306f\u3001\u9078\u629e\u3055\u308c\u305f\u8868\u73fe\u306e\u4e00\u90e8\u5206\u3092\u8981\u6c42\u3057\u307e\u3059\u3002\u30d0\u30a4\u30c8\u4f4d\u7f6e\u306f\u30bc\u30ed\u304b\u3089\u6570\u3048\u3001\u7d42\u7aef\u3082\u7bc4\u56f2\u306b\u542b\u307f\u307e\u3059\u3002<\/li>\n
  • \u7d9a\u304d\u306e\u4f4d\u7f6e\u304c\u5408\u3063\u3066\u3044\u3066\u3082\u3001\u524d\u534a\u3068\u5f8c\u534a\u306e\u7248\u304c\u540c\u3058\u3068\u306f\u9650\u308a\u307e\u305b\u3093\u3002\u9577\u3055\u3060\u3051\u306e\u78ba\u8a8d\u3067\u306f\u66f4\u65b0\u3092\u898b\u843d\u3068\u3057\u307e\u3059\u3002<\/li>\n
  • \u5f37\u3044ETag\u3092\u4f7f\u3063\u305fIf-Range\u304c\u4e00\u81f4\u3057\u306a\u3051\u308c\u3070\u3001\u30b5\u30fc\u30d0\u30fc\u306fRange\u3092\u7121\u8996\u3057\u307e\u3059\u3002\u901a\u5e38\u306e\u5168\u4f53\u5fdc\u7b54\u3092\u53d7\u3051\u305f\u5074\u306f\u3001\u53e4\u3044\u65ad\u7247\u3078\u306e\u8ffd\u8a18\u3067\u306f\u306a\u304f\u7f6e\u304d\u63db\u3048\u3092\u5224\u65ad\u3057\u307e\u3059\u3002<\/li>\n
  • \u90e8\u5206\u53d6\u5f97\u3078\u306e\u5bfe\u5fdc\u306f\u4fdd\u8a3c\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002206\u30fb200\u30fb416\u3068Content-Range\u3092\u78ba\u8a8d\u3057\u3001\u5b9f\u969b\u306b\u8fd4\u3063\u305f\u7bc4\u56f2\u3092\u6271\u3044\u307e\u3059\u3002<\/li>\n<\/ul>\n<\/section>\n

    \u300c400\u30d0\u30a4\u30c8\u76ee\u304b\u3089\u300d\u306f\u3001\u3069\u306e\u5185\u5bb9\u306e400\u30d0\u30a4\u30c8\u76ee\u304b<\/h2>\n

    HTTP\u3067\u3044\u3046\u8868\u73fe\u306f\u3001\u3042\u308b\u8cc7\u6e90\u3092\u7279\u5b9a\u306e\u5f62\u5f0f\u3067\u8868\u3057\u305f\u30c7\u30fc\u30bf\u3067\u3059\u3002\u540c\u3058URL\u3067\u3082\u3001\u66f4\u65b0\u6642\u523b\u3084\u8981\u6c42\u306e\u6761\u4ef6\u306b\u3088\u3063\u3066\u8fd4\u308b\u8868\u73fe\u304c\u5909\u308f\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002Range\u306f\u3001\u305d\u306e\u9078\u629e\u3055\u308c\u305f\u8868\u73fe\u306e\u4e00\u90e8\u5206\u3060\u3051\u3092\u9001\u308b\u3088\u3046\u8981\u6c42\u3059\u308b\u30d5\u30a3\u30fc\u30eb\u30c9\u3067\u3059\u3002\u672c\u7a3f\u3067\u306f\u3001GET\u3067\u4e00\u3064\u306e\u9023\u7d9a\u3057\u305f\u30d0\u30a4\u30c8\u7bc4\u56f2\u3092\u8981\u6c42\u3059\u308b\u5834\u5408\u306b\u7d5e\u308a\u307e\u3059\u3002<\/p>\n

    \u5168\u4f53\u304c1,000\u30d0\u30a4\u30c8\u3067\u3001\u5148\u982d\u306e400\u30d0\u30a4\u30c8\u3092\u4fdd\u5b58\u6e08\u307f\u306a\u3089\u3001\u4fdd\u5b58\u3057\u305f\u4f4d\u7f6e\u306f0\u304b\u3089399\u3067\u3059\u3002\u6b8b\u308a\u306f400\u304b\u3089999\u306a\u306e\u3067\u3001\u8981\u6c42\u306fRange: bytes=400-999<\/code>\u3068\u66f8\u3051\u307e\u3059\u3002\u7d42\u7aef\u3092\u542b\u3080\u305f\u3081\u3001\u9577\u3055\u306f999\u2212400\uff0b1\u3067600\u30d0\u30a4\u30c8\u3067\u3059\u3002[1\u300114.1.2\u7bc0] \u3053\u306e\u4f4d\u7f6e\u8a08\u7b97\u304c\u6b63\u3057\u304f\u3066\u3082\u3001\u518d\u958b\u5148\u304c\u540c\u3058\u7248\u304b\u3069\u3046\u304b\u306f\u5225\u306e\u554f\u984c\u3068\u3057\u3066\u6b8b\u308a\u307e\u3059\u3002<\/p>\n

    \u305f\u3068\u3048\u3070\u3001\u53e4\u3044\u7248A\u3082\u65b0\u3057\u3044\u7248B\u30821,000\u30d0\u30a4\u30c8\u3060\u3063\u305f\u3068\u3057\u307e\u3059\u3002\u9014\u4e2d\u3067\u5185\u5bb9\u3060\u3051\u304c\u5909\u308f\u3063\u305f\u5834\u5408\u3001A\u306e\u5148\u982d400\u30d0\u30a4\u30c8\u3078B\u306e\u6b8b\u308a600\u30d0\u30a4\u30c8\u3092\u8ffd\u52a0\u3059\u308c\u3070\u3001\u9577\u3055\u306f\u6b63\u3057\u304f1,000\u306b\u306a\u308a\u307e\u3059\u3002\u3057\u304b\u3057\u3001\u305d\u308c\u3060\u3051\u3067\u306fA\u3068\u3082B\u3068\u3082\u4e00\u81f4\u3057\u307e\u305b\u3093\u3002\u300c\u4e88\u5b9a\u306e\u5bb9\u91cf\u307e\u3067\u5c4a\u3044\u305f\u300d\u3068\u3044\u3046\u78ba\u8a8d\u306f\u3001\u540c\u3058\u7248\u306e\u5b8c\u6210\u3092\u610f\u5473\u3057\u306a\u3044\u306e\u3067\u3059\u3002<\/p>\n

    \u540c\u3058\u9577\u3055\u3067\u3082\u3001\u3064\u306a\u304e\u5408\u308f\u305b\u305f\u7d50\u679c\u304c\u9055\u3046<\/h2>\n

    \u3053\u306e\u9055\u3044\u3092\u72ec\u81ea\u306e\u30d0\u30a4\u30c8\u5217\u30e2\u30c7\u30eb\u3067\u78ba\u304b\u3081\u307e\u3059\u3002\u4f4d\u7f6ei\u306b\u5bfe\u3057\u3066\u3001\u7248A\u306fi mod 251<\/code>\u3001\u7248B\u306f(i+17) mod 251<\/code>\u3068\u3044\u3046\u5024\u3092\u5165\u308c\u3001\u305d\u308c\u305e\u308c1,000\u30d0\u30a4\u30c8\u3092\u4f5c\u308a\u307e\u3057\u305f\u3002\u3053\u3053\u3067mod\u306f\u5272\u3063\u305f\u4f59\u308a\u3067\u3059\u3002\u5b9f\u5728\u30d5\u30a1\u30a4\u30eb\u306e\u6e2c\u5b9a\u3067\u306f\u306a\u304f\u3001\u7248\u306e\u6df7\u5728\u3092\u898b\u3048\u308b\u3088\u3046\u306b\u3057\u305f\u8aac\u660e\u7528\u306e\u30c7\u30fc\u30bf\u3067\u3059\u3002<\/p>\n

    A\u306e\u5148\u982d400\u30d0\u30a4\u30c8\u3068A\u306e\u6b8b\u308a600\u30d0\u30a4\u30c8\u3092\u9023\u7d50\u3059\u308c\u3070\u3001\u5143\u306eA\u3068\u5168\u30d0\u30a4\u30c8\u304c\u4e00\u81f4\u3057\u307e\u3059\u3002\u4e00\u65b9\u3001A\u306e\u5148\u982d400\u30d0\u30a4\u30c8\u3068B\u306e\u6b8b\u308a600\u30d0\u30a4\u30c8\u3092\u9023\u7d50\u3059\u308b\u3068\u3001\u9577\u3055\u306f1,000\u306e\u307e\u307e\u3067\u3082\u3001A\u306b\u3082B\u306b\u3082\u4e00\u81f4\u3057\u307e\u305b\u3093\u3002\u8a08\u7b97\u3067\u306f\u30d0\u30a4\u30c8\u5217\u305d\u306e\u3082\u306e\u306e\u6bd4\u8f03\u3068SHA-256\u306e\u6bd4\u8f03\u3092\u884c\u3044\u3001\u3053\u306e\u4e09\u3064\u3092\u533a\u5225\u3057\u307e\u3057\u305f\u3002\u4ee5\u4e0b\u306e\u56f3\u306e\u300c\u6b63\u3057\u3044\u300d\u306f\u3001\u5bfe\u8c61\u306b\u3057\u305f\u7248\u306e\u5168\u4f53\u3068\u4e00\u81f4\u3059\u308b\u3068\u3044\u3046\u610f\u5473\u3067\u3059\u3002<\/p>\n

    \"\u72ec\u81ea\u306e1,000\u30d0\u30a4\u30c8\u30e2\u30c7\u30eb\u3002\u540c\u3058\u7248A\u306e\u5148\u982d400\u3068\u6b8b\u308a600\u306fA\u3078\u5fa9\u5143\u3067\u304d\u308b\u3002A\u306e\u5148\u982d400\u3068\u7248B\u306e\u6b8b\u308a600\u306f\u9577\u30551,000\u3067\u3082\u6df7\u5728\u3059\u308b\u3002\u7248\u304c\u5909\u308f\u3063\u305f\u969b\u306bB\u306e\u5168\u4f531,000\u3092\u53d7\u3051\u76f4\u3059\u3068B\u3068\u4e00\u81f4\u3059\u308b\u3002\"
    \u4f4d\u7f6e\u3068\u5168\u4f53\u9577\u3060\u3051\u3067\u306f\u7248\u306e\u4e00\u81f4\u3092\u5224\u5b9a\u3067\u304d\u306a\u3044\u3002\u56f3\u306f\u30d0\u30a4\u30c8\u5217\u306e\u9023\u7d50\u30e2\u30c7\u30eb\u3067\u3042\u308a\u3001HTTP\u30b5\u30fc\u30d0\u30fc\u306e\u52d5\u4f5c\u8a66\u9a13\u3084\u8ee2\u9001\u901f\u5ea6\u306e\u6e2c\u5b9a\u3067\u306f\u306a\u3044\u3002<\/figcaption><\/figure>\n

    \u3053\u306e\u4f8b\u3067\u306f\u3001\u540c\u3058\u7248\u3092\u518d\u958b\u3067\u304d\u308c\u3070\u65b0\u3057\u304f\u53d7\u3051\u53d6\u308b\u30c7\u30fc\u30bf\u672c\u4f53\u306f600\u30d0\u30a4\u30c8\u3067\u3059\u3002\u7248\u304c\u5909\u308f\u308a\u3001\u5168\u4f53\u3092\u53d7\u3051\u76f4\u3059\u306a\u30891,000\u30d0\u30a4\u30c8\u306b\u306a\u308a\u307e\u3059\u3002\u3053\u3053\u3067\u6bd4\u8f03\u3057\u3066\u3044\u308b\u306e\u306f\u30c7\u30fc\u30bf\u672c\u4f53\u306e\u9577\u3055\u3060\u3051\u3067\u3001\u30d8\u30c3\u30c0\u30fc\u3001\u6697\u53f7\u5316\u306e\u4ed8\u52a0\u60c5\u5831\u3001\u518d\u9001\u3001\u5727\u7e2e\u3084\u901a\u4fe1\u6642\u9593\u306f\u542b\u307f\u307e\u305b\u3093\u3002\u5c11\u306a\u3044\u8ee2\u9001\u91cf\u3068\u3001\u6b63\u3057\u3044\u7248\u306e\u5b8c\u6210\u306f\u3001\u540c\u3058\u5224\u65ad\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n

    If-Range\u306f\u3001\u7248\u304c\u9055\u3046\u3068\u304d\u306bRange\u3092\u5916\u3059<\/h2>\n

    \u305d\u3053\u3067\u3001\u6700\u521d\u306e\u5fdc\u7b54\u3067\u5f97\u305f\u5f37\u3044ETag<\/strong>\u3092\u4fdd\u5b58\u3057\u3066\u304a\u304d\u307e\u3059\u3002ETag\u306f\u30b5\u30fc\u30d0\u30fc\u304c\u8868\u73fe\u3078\u4ed8\u3051\u308b\u691c\u8a3c\u7528\u306e\u5024\u3067\u3001\u30d5\u30a1\u30a4\u30eb\u306e\u5185\u5bb9\u3092\u5229\u7528\u8005\u304c\u52dd\u624b\u306b\u63a8\u6e2c\u3057\u3066\u4f5c\u308b\u540d\u524d\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u3053\u3053\u3067\u306f\u7248A\u306e\u5024\u3092\"version-A\"<\/code>\u3068\u3057\u305f\u8aac\u660e\u4f8b\u3092\u4f7f\u3044\u307e\u3059\u3002\u518d\u958b\u6642\u306bRange\u3068\u4f75\u305b\u3066If-Range: \"version-A\"<\/code>\u3092\u9001\u308b\u3068\u3001\u305d\u306e\u691c\u8a3c\u5024\u304c\u73fe\u5728\u306e\u8868\u73fe\u3068\u4e00\u81f4\u3059\u308b\u5834\u5408\u306b\u7bc4\u56f2\u8981\u6c42\u3092\u6271\u3046\u6761\u4ef6\u3092\u4ed8\u3051\u3089\u308c\u307e\u3059\u3002[1\u300113.1.5\u7bc0]<\/p>\n

    \u73fe\u5728\u3082A\u3067\u3001\u30b5\u30fc\u30d0\u30fc\u304c\u7bc4\u56f2\u8981\u6c42\u3092\u51e6\u7406\u3067\u304d\u308b\u306a\u3089\u3001\u6b8b\u308a\u3092206 Partial Content\u3067\u53d7\u3051\u53d6\u308b\u6d41\u308c\u306b\u306a\u308a\u307e\u3059\u3002\u73fe\u5728\u304cB\u3078\u5909\u308f\u3063\u3066\u3044\u3066\u691c\u8a3c\u5024\u304c\u4e00\u81f4\u3057\u306a\u3051\u308c\u3070\u3001\u30b5\u30fc\u30d0\u30fc\u306fRange\u3092\u7121\u8996\u3057\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002\u307b\u304b\u306b\u6761\u4ef6\u304c\u306a\u304f\u901a\u5e38\u306eGET\u304c\u6210\u529f\u3059\u308b\u4f8b\u3067\u306f\u3001B\u5168\u4f53\u3092200 OK\u3067\u8fd4\u3059\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002If-Range\u306e\u4e0d\u4e00\u81f4\u305d\u308c\u81ea\u4f53\u3092\u3001\u5fc5\u305a412\u3067\u6b62\u3081\u308b\u4ed5\u7d44\u307f\u3068\u3057\u3066\u8aad\u3080\u306e\u306f\u8aa4\u308a\u3067\u3059\u3002<\/p>\n

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    W\/<\/code>\u3092\u4f34\u3046\u5f31\u3044ETag\u306f\u3001If-Range\u3078\u6307\u5b9a\u3067\u304d\u307e\u305b\u3093\u3002\u5185\u5bb9\u304c\u610f\u5473\u306e\u4e0a\u3067\u306f\u540c\u7b49\u3067\u3082\u3001\u30d0\u30a4\u30c8\u5358\u4f4d\u3067\u305d\u306e\u307e\u307e\u63a5\u7d9a\u3067\u304d\u308b\u4fdd\u8a3c\u3068\u306f\u9055\u3046\u305f\u3081\u3067\u3059\u3002If-Range\u306b\u306f\u65e5\u4ed8\u3092\u4f7f\u3046\u5f62\u5f0f\u3082\u3042\u308a\u307e\u3059\u304c\u3001\u5229\u7528\u3067\u304d\u308b\u6761\u4ef6\u304c\u5225\u306b\u3042\u308b\u305f\u3081\u3001\u3053\u3053\u3067\u306f\u5f37\u3044ETag\u3092\u4fdd\u6301\u3059\u308b\u65b9\u5f0f\u3060\u3051\u3092\u6271\u3044\u307e\u3059\u3002<\/p>\n

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    \u51fa\u5178<\/h2>\n
      \n
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