{"id":2057,"date":"2024-10-30T12:02:04","date_gmt":"2024-10-30T04:02:04","guid":{"rendered":"http:\/\/blog.xtaa.cn\/?p=2057"},"modified":"2024-10-30T12:02:04","modified_gmt":"2024-10-30T04:02:04","slug":"%e4%b8%80%e6%96%87%e8%af%bb%e6%87%82quic-%e5%8d%8f%e8%ae%ae%ef%bc%9a%e6%9b%b4%e5%bf%ab%e3%80%81%e6%9b%b4%e7%a8%b3%e3%80%81%e6%9b%b4%e9%ab%98%e6%95%88%e7%9a%84%e7%bd%91%e7%bb%9c%e9%80%9a%e4%bf%a1","status":"publish","type":"post","link":"http:\/\/blog.xtaa.cn\/index.php\/2024\/10\/30\/%e4%b8%80%e6%96%87%e8%af%bb%e6%87%82quic-%e5%8d%8f%e8%ae%ae%ef%bc%9a%e6%9b%b4%e5%bf%ab%e3%80%81%e6%9b%b4%e7%a8%b3%e3%80%81%e6%9b%b4%e9%ab%98%e6%95%88%e7%9a%84%e7%bd%91%e7%bb%9c%e9%80%9a%e4%bf%a1\/","title":{"rendered":"\u4e00\u6587\u8bfb\u61c2QUIC \u534f\u8bae\uff1a\u66f4\u5feb\u3001\u66f4\u7a33\u3001\u66f4\u9ad8\u6548\u7684\u7f51\u7edc\u901a\u4fe1"},"content":{"rendered":"\n<p><a href=\"https:\/\/mp.weixin.qq.com\/s\/AeO0VarELHy2Ma6u2hQFhg\">\u539f\u6587<\/a><\/p>\n\n\n\n<p>\u4f60\u662f\u5426\u4e5f\u6709\u8fd9\u6837\u7684\u56f0\u6270\uff1a\u6253\u5f00APP\u5de8\u8017\u65f6\u3001\u5237\u5267\u4e00\u76f4\u5728\u7f13\u51b2\u3001\u8ffd\u70ed\u641c\u6253\u4e0d\u5f00\u9875\u9762\u3001\u4fe1\u53f7\u7a0d\u5fae\u5dee\u70b9\u5c31\u76f4\u63a5\u52a0\u8f7d\u5931\u8d25\u2026\u2026<\/p>\n\n\n\n<p>\u5982\u679c\u6709\u4e00\u4e2a\u534f\u8bae\u80fd\u8ba9\u4f60\u7684\u4e0a\u7f51\u901f\u5ea6\uff0c\u5728\u4e0d\u9700\u8981\u4efb\u4f55\u4fee\u6539\u7684\u60c5\u51b5\u4e0b\u5c31\u80fd\u63d0\u534720%\uff0c\u7279\u522b\u662f\u7f51\u7edc\u5dee\u7684\u73af\u5883\u4e0b\u80fd\u591f\u63d0\u534730%\u4ee5\u4e0a\uff1b\u5982\u679c\u6709\u4e00\u4e2a\u534f\u8bae\u53ef\u4ee5\u8ba9\u4f60\u5728WiFi\u548c\u8702\u7a9d\u6570\u636e\u5207\u6362\u65f6\uff0c\u7f51\u7edc\u5b8c\u5168\u4e0d\u65ad\u5f00\u3001\u76f4\u64ad\u4e0d\u5361\u987f\u3001\u89c6\u9891\u4e0d\u7f13\u51b2\uff1b\u4f60\u613f\u610f\u53bb\u4e86\u89e3\u4e00\u4e0b\u5b83\u5417\uff1f\u5b83\u5c31\u662fQUIC\u534f\u8bae\u3002\u672c\u6587\u5c06\u4eceQUIC\u7684\u80cc\u666f\u3001\u539f\u7406\u3001\u5b9e\u8df5\u90e8\u7f72\u7b49\u65b9\u9762\u6765\u8be6\u7ec6\u4ecb\u7ecd\u3002<\/p>\n\n\n\n<h1 class=\"wp-block-heading\"><strong>\u4e00\uff1a\u7f51\u7edc\u534f\u8bae\u6808<\/strong>&nbsp;&nbsp;<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>1.1 \u4ec0\u4e48\u53eb\u7f51\u7edc\u534f\u8bae\uff1f<\/strong>&nbsp;&nbsp;<\/h2>\n\n\n\n<p>\u7c7b\u4f3c\u4e8e\u6211\u4eec\u751f\u6d3b\u4e2d\u7b7e\u7f72\u7684\u5408\u540c\u4e00\u6837\uff0c\u6bd4\u5982\u4e70\u5356\u5408\u540c\u662f\u4e3a\u4e86\u7ea6\u675f\u4e70\u5356\u53cc\u65b9\u7684\u884c\u4e3a\u6309\u7167\u5408\u540c\u7684\u8981\u6c42\u5c65\u884c\uff0c\u7f51\u7edc\u534f\u8bae\u662f\u4e3a\u4e86\u7ea6\u675f\u7f51\u7edc\u901a\u4fe1\u8fc7\u7a0b\u4e2d\u5404\u65b9\uff08\u5ba2\u6237\u7aef\u3001\u670d\u52a1\u7aef\u53ca\u4e2d\u95f4\u8bbe\u5907\uff09\u5fc5\u987b\u6309\u7167\u534f\u8bae\u7684\u89c4\u5b9a\u8fdb\u884c\u901a\u4fe1\uff0c\u5b83\u5236\u5b9a\u4e86\u6570\u636e\u5305\u7684\u683c\u5f0f\u3001\u6570\u636e\u4ea4\u4e92\u7684\u8fc7\u7a0b\u7b49\u7b49\uff0c\u7f51\u7edc\u4e2d\u7684\u6240\u6709\u8bbe\u5907\u90fd\u5fc5\u987b\u4e25\u683c\u9075\u5b88\u624d\u53ef\u4ee5\u5168\u7f51\u4e92\u8054\u3002<\/p>\n\n\n\n<p>\u5728\u7f51\u7edc\u534f\u8bae\u6808\u4e2d\uff0c\u662f\u6709\u5206\u5c42\u7684\uff0c\u6bcf\u4e00\u5c42\u8d1f\u8d23\u4e0d\u540c\u7684\u4e8b\u52a1\u3002\u6211\u4eec\u8ba8\u8bba\u6700\u591a\u7684\u6709\u4e09\u4e2a\uff1a\u5e94\u7528\u5c42\u3001\u4f20\u8f93\u5c42\u3001\u7f51\u7edc\u5c42\u3002\u5e94\u7528\u5c42\u4e3b\u8981\u662f\u9488\u5bf9\u5e94\u7528\u8f6f\u4ef6\u8fdb\u884c\u7ea6\u675f\uff0c\u6bd4\u5982\u4f60\u8bbf\u95ee\u7f51\u7ad9\u9700\u8981\u6309\u7167HTTP\u534f\u8bae\u683c\u5f0f\u548c\u8981\u6c42\u8fdb\u884c\uff0c\u4f60\u53d1\u9001\u7535\u5b50\u90ae\u4ef6\u9700\u8981\u9075\u5b88SMTP\u7b49\u90ae\u4ef6\u534f\u8bae\u7684\u683c\u5f0f\u548c\u8981\u6c42\uff1b\u4f20\u8f93\u5c42\u4e3b\u8981\u8d1f\u8d23\u6570\u636e\u5305\u5728\u7f51\u7edc\u4e2d\u7684\u4f20\u8f93\u95ee\u9898\uff0c\u6bd4\u5982\u5982\u4f55\u4fdd\u8bc1\u6570\u636e\u4f20\u8f93\u7684\u65f6\u5019\u7684\u5b89\u5168\u6027\u548c\u53ef\u9760\u6027\u3001\u6570\u636e\u5305\u4e22\u4e86\u600e\u4e48\u5904\u7406\uff1b\u7f51\u7edc\u5c42\uff0c\u4e5f\u53eb\u8def\u7531\u8f6c\u53d1\u5c42\uff0c\u4e3b\u8981\u8d1f\u8d23\u6570\u636e\u5305\u4ece\u51fa\u53d1\u5730\u5230\u76ee\u7684\u5730\uff0c\u5e94\u8be5\u600e\u6837\u9009\u62e9\u8def\u5f84\u624d\u80fd\u66f4\u5feb\u7684\u5230\u8fbe\u3002\u5408\u7406\u7684\u7f51\u7edc\u534f\u8bae\u80fd\u591f\u8ba9\u7528\u6237\u4e0a\u7f51\u66f4\u5feb\uff01&nbsp;&nbsp; &nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>1.2 HTTP\/3\u534f\u8bae<\/strong>&nbsp;&nbsp;<\/h2>\n\n\n\n<p>HTTP\/3\u662f\u7b2c\u4e09\u4e2a\u4e3b\u8981\u7248\u672c\u7684HTTP\u534f\u8bae\u3002\u4e0e\u5176\u524d\u4efbHTTP\/1.1\u548cHTTP\/2\u4e0d\u540c\uff0c\u5728HTTP\/3\u4e2d\uff0c\u5f03\u7528TCP\u534f\u8bae\uff0c\u6539\u4e3a\u4f7f\u7528\u57fa\u4e8eUDP\u534f\u8bae\u7684QUIC\u534f\u8bae\u5b9e\u73b0\u3002\u6240\u4ee5\uff0cHTTP\/3\u7684\u6838\u5fc3\u5728\u4e8eQUIC\u534f\u8bae\u3002\u663e\u7136\uff0cHTTP\/3\u5c5e\u4e8e\u5e94\u7528\u5c42\u534f\u8bae\uff0c\u800c\u5b83\u4f7f\u7528\u7684QUIC\u534f\u8bae\u5c5e\u4e8e\u4f20\u8f93\u5c42\u534f\u8bae\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>1.3 \u6211\u4eec\u9700\u8981HTTP\/3\u534f\u8bae\u5417<\/strong>&nbsp;&nbsp;<\/h2>\n\n\n\n<p>\u5f88\u591a\u4eba\u53ef\u80fd\u90fd\u4f1a\u6709\u8fd9\u6837\u4e00\u4e2a\u7591\u95ee\uff0c\u4e3a\u4ec0\u4e48\u5728 2015 \u5e74\u624d\u6807\u51c6\u5316\u4e86 HTTP\/2 \uff0c\u8fd9\u4e48\u5feb\u5c31\u9700\u8981 HTTP\/3\uff1f<\/p>\n\n\n\n<p>\u6211\u4eec\u77e5\u9053\uff0cHTTP\/2\u901a\u8fc7\u5f15\u5165\u201c\u6d41\u201d\u7684\u6982\u5ff5\uff0c\u5b9e\u73b0\u4e86\u591a\u8def\u590d\u7528\u3002\u7b80\u5355\u6765\u8bf4\uff0c\u5047\u8bbe\u4f60\u8bbf\u95ee\u67d0\u4e2a\u7f51\u7ad9\u9700\u8981\u8bf7\u6c4210\u4e2a\u8d44\u6e90\uff0c\u4f60\u4f7f\u7528HTTP1.1\u534f\u8bae\u53ea\u80fd\u4e32\u884c\u5730\u53d1\u8bf7\u6c42\uff0c\u8d44\u6e901\u8bf7\u6c42\u6210\u529f\u4e4b\u540e\u624d\u80fd\u53d1\u9001\u8d44\u6e902\u7684\u8bf7\u6c42\uff0c\u4ee5\u6b64\u7c7b\u63a8\uff0c\u8fd9\u4e2a\u8fc7\u7a0b\u662f\u975e\u5e38\u8017\u65f6\u7684\u3002\u5982\u679c\u60f310\u4e2a\u8bf7\u6c42\u5e76\u53d1\uff0c\u4e0d\u9700\u8981\u4e32\u884c\u7b49\u5f85\u7684\u8bdd\uff0c\u5728HTTP1.1\u4e2d\uff0c\u5e94\u7528\u5c31\u9700\u8981\u4e3a\u4e00\u4e2a\u57df\u540d\u540c\u65f6\u5efa\u7acb10\u4e2aTCP\u8fde\u63a5\u624d\u884c\uff08\u4e00\u822c\u6d4f\u89c8\u5668\u4e0d\u5141\u8bb8\u5efa\u7acb\u8fd9\u4e48\u591a\uff09\uff0c\u8fd9\u65e0\u7591\u662f\u5bf9\u8d44\u6e90\u7684\u6781\u5927\u7684\u6d6a\u8d39\u3002HTTP\/2\u7684\u591a\u8def\u590d\u7528\u89e3\u51b3\u4e86\u8fd9\u4e00\u95ee\u9898\uff0c\u80fd\u4f7f\u591a\u6761\u8bf7\u6c42\u5e76\u53d1\u3002<\/p>\n\n\n\n<p>\u4f46\u73b0\u5b9e\u5f88\u6b8b\u9177\uff0c\u4e3a\u4ec0\u4e48\u5f88\u591a\u4e1a\u52a1\u7528\u4e86HTTP\/2\uff0c\u53cd\u5012\u4e0d\u5982HTTP1.1\u5462\uff1f<\/p>\n\n\n\n<p>\u7b2c\u4e00\uff1a\u591a\u6d41\u5e76\u53d1\u5e26\u6765\u4e86\u8bf7\u6c42\u4f18\u5148\u7ea7\u7684\u95ee\u9898\uff0c\u56e0\u4e3a\u6709\u7684\u8bf7\u6c42\u5ba2\u6237\u7aef\uff08\u6bd4\u5982\u6d4f\u89c8\u5668\uff09\u5e0c\u671b\u5b83\u80fd\u5c3d\u5feb\u8fd4\u56de\uff0c\u6709\u7684\u8bf7\u6c42\u53ef\u4ee5\u665a\u70b9\u8fd4\u56de\uff1b\u53c8\u6216\u8005\u6709\u7684\u8bf7\u6c42\u9700\u8981\u4f9d\u8d56\u522b\u7684\u8bf7\u6c42\u7684\u8d44\u6e90\u6765\u5c55\u793a\u3002\u6d41\u7684\u4f18\u5148\u7ea7\u8868\u793a\u4e86\u8fd9\u4e2a\u8bf7\u6c42\u88ab\u5904\u7406\u7684\u4f18\u5148\u7ea7\uff0c\u6bd4\u5982\u5ba2\u6237\u7aef\u8bf7\u6c42\u7684\u5173\u952e\u7684CSS\u548cJS\u8d44\u6e90\u662f\u5fc5\u987b\u9ad8\u4f18\u5148\u7ea7\u8fd4\u56de\u7684\uff0c\u56fe\u7247\u89c6\u9891\u7b49\u8d44\u6e90\u53ef\u4ee5\u665a\u4e00\u70b9\u54cd\u5e94\u3002&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<br>\u6d41\u7684\u4f18\u5148\u7ea7\u7684\u8bbe\u7f6e\u662f\u4e00\u4e2a\u96be\u4ee5\u5e73\u8861\u6216\u8005\u96be\u4ee5\u505a\u5230\u516c\u5e73\u5408\u7406\u7684\u4e8b\u60c5\uff0c\u5982\u679c\u8bbe\u7f6e\u7a0d\u5fae\u4e0d\u6070\u5f53\uff0c\u5c31\u4f1a\u5bfc\u81f4\u6709\u4e9b\u8bf7\u6c42\u5f88\u6162\uff0c\u8fd9\u5728\u7528\u6237\u770b\u6765\uff0c\u5c31\u662f\u7528\u4e86HTTP\/2\u4e4b\u540e\uff0c\u600e\u4e48\u6709\u7684\u8bf7\u6c42\u53d8\u6162\u4e86\u3002&nbsp;&nbsp; &nbsp;<\/p>\n\n\n\n<p>\u7b2c\u4e8c\uff1aHTTP\/2\u89e3\u51b3\u4e86HTTP\u534f\u8bae\u5c42\u9762\u7684\u961f\u5934\u963b\u585e\uff0c\u4f46\u662fTCP\u7684\u961f\u5934\u963b\u585e\u4ecd\u7136\u6ca1\u6709\u89e3\u51b3\uff0c\u6240\u6709\u7684\u6d41\u90fd\u5728\u4e00\u6761TCP\u8fde\u63a5\u4e0a\uff0c\u5982\u679c\u4e07\u4e00\u5e8f\u53f7\u5c0f\u7684\u67d0\u4e2a\u5305\u4e22\u4e86\uff0c\u90a3\u4e48TCP\u4e3a\u4e86\u4fdd\u8bc1\u5230\u8fbe\u7684\u6709\u5e8f\u6027\uff0c\u5fc5\u987b\u7b49\u8fd9\u4e2a\u5305\u5230\u8fbe\u540e\u624d\u80fd\u6ed1\u52a8\u7a97\u53e3\uff0c\u5373\u4f7f\u540e\u9762\u7684\u5e8f\u53f7\u5927\u7684\u5305\u5df2\u7ecf\u5230\u8fbe\u4e86\u4e5f\u4e0d\u80fd\u88ab\u5e94\u7528\u7a0b\u5e8f\u8bfb\u53d6\u3002\u8fd9\u5c31\u5bfc\u81f4\u4e86\u5728\u591a\u6761\u6d41\u5e76\u53d1\u7684\u65f6\u5019\uff0c\u67d0\u6761\u6d41\u7684\u67d0\u4e2a\u5305\u4e22\u4e86\uff0c\u5e8f\u53f7\u5728\u8be5\u5305\u540e\u9762\u7684\u5176\u4ed6\u6d41\u7684\u6570\u636e\u90fd\u4e0d\u80fd\u88ab\u5e94\u7528\u7a0b\u5e8f\u8bfb\u53d6\u3002\u8fd9\u79cd\u60c5\u51b5\u4e0b\u5982\u679c\u6362\u505aHTTP1.1\uff0c\u7531\u4e8eHTTP1.1\u662f\u591a\u6761\u8fde\u63a5\uff0c\u67d0\u4e2a\u8fde\u63a5\u4e0a\u7684\u8bf7\u6c42\u4e22\u5305\u4e86\uff0c\u5e76\u4e0d\u5f71\u54cd\u5176\u4ed6\u8fde\u63a5\u3002\u6240\u4ee5\u5728\u4e22\u5305\u6bd4\u8f83\u4e25\u91cd\u7684\u60c5\u51b5\u4e0b\uff0cHTTP\/2\u6574\u4f53\u6548\u679c\u5927\u6982\u7387\u4e0d\u5982HTTP1.1<\/p>\n\n\n\n<p><strong>\u4e8b\u5b9e\u4e0a\uff0c\u6211\u4eec\u5e76\u4e0d\u662f\u771f\u7684\u9700\u8981\u65b0\u7684 HTTP \u7248\u672c\uff0c\u800c\u662f\u9700\u8981\u5bf9\u5e95\u5c42\u4f20\u8f93\u63a7\u5236\u534f\u8bae(TCP) \u8fdb\u884c\u5347\u7ea7\u3002<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>1.4 QUIC\u534f\u8bae\u6808<\/strong>&nbsp;&nbsp;<\/h2>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/d4hoYJlxOjPdNOfHeOweylHiaZUycN56ib9BroAYITPH33A1ffXz9aXNWTS4oO5F2ib8TiaSY9TEcZJKX3iaFY4SopA\/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1\" alt=\"\u56fe\u7247\"\/><\/figure>\n\n\n\n<p>\u56fe0-QUIC\u534f\u8bae\u6808&nbsp;&nbsp; &nbsp;<\/p>\n\n\n\n<p>QUIC\u534f\u8bae\u5b9e\u73b0\u5728\u7528\u6237\u6001\uff0c\u5efa\u7acb\u5728\u5185\u6838\u6001\u7684UDP\u7684\u57fa\u7840\u4e4b\u4e0a\uff0c\u96c6\u6210\u4e86TCP\u7684\u53ef\u9760\u4f20\u8f93\u7279\u6027\uff0c\u96c6\u6210\u4e86TLS1.3\u534f\u8bae\uff0c\u4fdd\u8bc1\u4e86\u7528\u6237\u6570\u636e\u4f20\u8f93\u7684\u5b89\u5168\u3002<\/p>\n\n\n\n<h1 class=\"wp-block-heading\"><strong>\u4e8c\uff1aQUIC\u534f\u8bae\u7684\u4f18\u79c0\u7279\u6027<\/strong><strong>&nbsp;&nbsp;<\/strong><\/h1>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>2.1 \u5efa\u8fde\u5feb&nbsp;&nbsp;<\/strong><\/h2>\n\n\n\n<p>\u6570\u636e\u7684\u53d1\u9001\u548c\u63a5\u6536\uff0c\u8981\u60f3\u4fdd\u8bc1\u5b89\u5168\u548c\u53ef\u9760\uff0c\u4e00\u5b9a\u662f\u9700\u8981\u8fde\u63a5\u7684\u3002TCP\u9700\u8981\uff0cQUIC\u4e5f\u540c\u6837\u9700\u8981\u3002\u8fde\u63a5\u5230\u5e95\u662f\u4ec0\u4e48\uff1f\u8fde\u63a5\u662f\u4e00\u4e2a\u901a\u9053\uff0c\u662f\u5728\u4e00\u4e2a\u5ba2\u6237\u7aef\u548c\u4e00\u4e2a\u670d\u52a1\u7aef\u4e4b\u95f4\u7684\u552f\u4e00\u4e00\u6761\u53ef\u4fe1\u7684\u901a\u9053\uff0c\u4e3b\u8981\u662f\u4e3a\u4e86\u5b89\u5168\u8003\u8651\uff0c\u5efa\u7acb\u4e86\u8fde\u63a5\uff0c\u4e5f\u5c31\u662f\u5efa\u7acb\u4e86\u53ef\u4fe1\u901a\u9053\uff0c\u670d\u52a1\u5668\u5bf9\u8fd9\u4e2a\u5ba2\u6237\u7aef\u201c\u5f88\u653e\u5fc3\u201d\uff0c\u5bf9\u4e8e\u670d\u52a1\u5668\u6765\u8bf4\uff1a\u4f60\u60f3\u8ddf\u6211\u8fdb\u884c\u901a\u4fe1\uff0c\u5f97\u5148\u8ba9\u6211\u8ba4\u8bc6\u4e00\u4e0b\u4f60\uff0c\u6211\u5f97\u5148\u786e\u8ba4\u4e00\u4e0b\u4f60\u662f\u597d\u4eba\uff0c\u662f\u6709\u8d44\u683c\u8ddf\u6211\u901a\u4fe1\u7684\u3002\u90a3\u4e48\u8fd9\u4e2a\u786e\u8ba4\u5bf9\u65b9\u8eab\u4efd\u7684\u8fc7\u7a0b\uff0c\u5c31\u662f\u5efa\u7acb\u8fde\u63a5\u7684\u8fc7\u7a0b\u3002<\/p>\n\n\n\n<p>\u4f20\u7edf\u57fa\u4e8eTCP\u7684HTTPS\u7684\u5efa\u8fde\u8fc7\u7a0b\u4e3a\u4ec0\u4e48\u5982\u6b64\u6162\uff1f\u5b83\u9700\u8981TCP\u548cTLS\u4e24\u4e2a\u5efa\u8fde\u8fc7\u7a0b\u3002\u5982\u56fe1\u6240\u793a\uff08\u4f20\u7edfHTTPS\u8bf7\u6c42\u6d41\u7a0b\u56fe\uff09\uff1a&nbsp;&nbsp; &nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/d4hoYJlxOjPdNOfHeOweylHiaZUycN56ibQty5IiaBc0OiaxYKnaQ6B8EorwY4wCMrjyAINOHfvicgoxyPbzaxK5nPw\/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1\" alt=\"\u56fe\u7247\"\/><\/figure>\n\n\n\n<p>\u56fe1-\u4f20\u7edfHTTPS\u8bf7\u6c42\u6d41\u7a0b\u56fe<\/p>\n\n\n\n<p>\u5bf9\u4e8e\u4e00\u4e2a\u5c0f\u8bf7\u6c42\uff08\u7528\u6237\u6570\u636e\u91cf\u8f83\u5c0f\uff09\u800c\u8a00\uff0c\u4f20\u8f93\u6570\u636e\u53ea\u9700\u89811\u4e2aRTT\uff0c\u4f46\u662f\u5149\u5efa\u8fde\u5c31\u82b1\u6389\u4e863\u4e2aRTT\uff0c\u8fd9\u662f\u975e\u5e38\u4e0d\u5212\u7b97\u7684\uff0c\u8fd9\u91cc\u5efa\u8fde\u5305\u62ec\u4e24\u4e2a\u8fc7\u7a0b\uff1aTCP\u5efa\u8fde\u9700\u89811\u4e2aRTT\uff0cTLS\u5efa\u8fde\u9700\u89812\u4e2aRTT\u3002RTT\uff1aRound Trip Time\uff0c\u6570\u636e\u5305\u5728\u7f51\u7edc\u4e0a\u4e00\u4e2a\u6765\u56de\u7684\u65f6\u95f4\u3002<\/p>\n\n\n\n<p><strong>\u4e3a\u4ec0\u4e48\u9700\u8981\u4e24\u4e2a\u8fc7\u7a0b\uff1f<\/strong>\u53ef\u6076\u5c31\u53ef\u6076\u5728\u8fd9\u4e2a\u5730\u65b9\uff0cTCP\u548cTLS\u6ca1\u529e\u6cd5\u5408\u5e76\uff0c\u56e0\u4e3aTCP\u662f\u5728\u5185\u6838\u91cc\u5b8c\u6210\u7684\uff0cTLS\u662f\u5728\u7528\u6237\u6001\u3002\u4e5f\u8bb8\u6709\u4eba\u4f1a\u8bf4\u628a\u5e72\u6389\u5185\u6838\u91cc\u7684TCP\uff0c\u628aTCP\u632a\u51fa\u6765\u653e\u5230\u7528\u6237\u6001\uff0c\u7136\u540e\u5c31\u53ef\u4ee5\u548cTLS\u4e00\u8d77\u5904\u7406\u4e86\u3002\u9996\u5148\uff0c\u4f60\u5e72\u4e0d\u6389\u5185\u6838\u91cc\u7684TCP\uff0cTCP\u592a\u53e4\u8001\u4e86\uff0c\u5168\u4e16\u754c\u7684\u670d\u52a1\u5668\u7684TCP\u90fd\u56fa\u5316\u5728\u5185\u6838\u91cc\u4e86\u3002\u6240\u4ee5\uff0c\u65e2\u7136\u5e72\u4e0d\u6389TCP\uff0c\u90a3\u6211\u4e0d\u7528\u5b83\u4e86\uff0c\u6211\u518d\u81ea\u521b\u4e00\u4e2a\u4f20\u8f93\u5c42\u534f\u8bae\uff0c\u653e\u5230\u7528\u6237\u6001\uff0c\u7136\u540e\u518d\u7ed3\u5408TLS\uff0c\u8fd9\u6837\u4e0d\u5c31\u53ef\u4ee5\u628a\u4e24\u4e2a\u5efa\u8fde\u8fc7\u7a0b\u5408\u4e8c\u4e3a\u4e00\u4e86\u5417\uff1f\u662f\u7684\uff0c\u8fd9\u5c31\u662fQUIC\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>2.1.1 QUIC\u76841-RTT\u5efa\u8fde&nbsp;&nbsp;<\/strong>&nbsp;&nbsp;<\/h3>\n\n\n\n<p>\u5982\u56fe2\u6240\u793a\uff0c\u662fQUIC\u7684\u8fde\u63a5\u5efa\u7acb\u8fc7\u7a0b\uff1a\u521d\u6b21\u5efa\u8fde\u53ea\u9700\u89811\u4e2aRTT\u5373\u53ef\u5b8c\u6210\u5efa\u8fde\u3002\u540e\u7eed\u518d\u6b21\u5efa\u8fde\u5c31\u53ef\u4ee5\u4f7f\u75280-RTT\u7279\u6027<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/d4hoYJlxOjPdNOfHeOweylHiaZUycN56ibjnBC0rQsG5iaorNs7ENYXWYtMAlOy5JQnIicQPprxoTia0nuJaOasM1kQ\/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1\" alt=\"\u56fe\u7247\"\/><\/figure>\n\n\n\n<p>\u56fe2-QUIC\u5efa\u8fde\u8fc7\u7a0b\u56fe<\/p>\n\n\n\n<p>QUIC\u76841-RTT\u5efa\u8fde\uff1a\u5ba2\u6237\u7aef\u4e0e\u670d\u52a1\u7aef\u521d\u6b21\u5efa\u8fde\uff08\u4e4b\u524d\u4ece\u672a\u8fdb\u884c\u901a\u4fe1\u8fc7\uff09\uff0c\u6216\u8005\u957f\u65f6\u95f4\u6ca1\u6709\u901a\u4fe1\u8fc7\uff080-RTT\u8fc7\u671f\u4e86\uff09\uff0c\u53ea\u80fd\u8fdb\u884c1-RTT\u5efa\u8fde\u3002\u53ea\u6709\u5148\u8fdb\u884c\u4e00\u6b21\u5b8c\u6574\u76841-RTT\u5efa\u8fde\uff0c\u540e\u7eed\u4e00\u6bb5\u65f6\u95f4\u5185\u7684\u901a\u4fe1\u624d\u53ef\u4ee5\u8fdb\u884c0-RTT\u5efa\u8fde\u3002<\/p>\n\n\n\n<p>\u5982\u56fe3\u6240\u793a\uff1aQUIC\u76841-RTT\u5efa\u8fde\u53ef\u4ee5\u5206\u6210\u4e24\u4e2a\u90e8\u5206\u3002QUIC\u8fde\u63a5\u4fe1\u606f\u90e8\u5206\u548cTLS1.3\u63e1\u624b\u90e8\u5206\u3002&nbsp;&nbsp; &nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/d4hoYJlxOjPdNOfHeOweylHiaZUycN56ibKpu3daZc6tdQkgJBZiaTFWVXvwTQTjIy0RASPE1LxvDJicSknI0Vtlww\/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1\" alt=\"\u56fe\u7247\"\/><\/figure>\n\n\n\n<p>\u56fe3-QUIC\u5efa\u8fde\u6293\u5305<\/p>\n\n\n\n<p><strong>QUIC\u8fde\u63a5\uff1a<\/strong>\u534f\u5546QUIC\u7248\u672c\u53f7\u3001\u534f\u5546quic\u4f20\u8f93\u53c2\u6570\u3001\u751f\u6210\u8fde\u63a5ID\u3001\u786e\u5b9aPacket Number\u7b49\u4fe1\u606f\uff0c\u7c7b\u4f3c\u4e8eTCP\u7684SYN\u62a5\u6587\uff1b\u4fdd\u8bc1\u901a\u4fe1\u7684\u4e24\u7aef\u786e\u8ba4\u8fc7\u5f7c\u6b64\uff0c\u662f\u5bf9\u7684\u4eba\u3002<\/p>\n\n\n\n<p><strong>TLS1.3\u63e1\u624b<\/strong>\uff1a\u6807\u51c6\u534f\u8bae\uff0c\u975e\u5bf9\u79f0\u52a0\u5bc6\uff0c\u76ee\u7684\u662f\u4e3a\u4e86\u534f\u5546\u51fa \u5bf9\u79f0\u5bc6\u94a5\uff0c\u7136\u540e\u540e\u7eed\u4f20\u8f93\u7684\u6570\u636e\u4f7f\u7528\u8fd9\u4e2a\u5bf9\u79f0\u5bc6\u94a5\u8fdb\u884c\u52a0\u5bc6\u548c\u89e3\u5bc6\uff0c\u4fdd\u62a4\u6570\u636e\u4e0d\u88ab\u7a83\u53d6\u3002<\/p>\n\n\n\n<p>\u6211\u4eec\u91cd\u70b9\u770bQUIC\u7684TLS1.3\u63e1\u624b\u8fc7\u7a0b\u3002&nbsp;&nbsp; &nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/d4hoYJlxOjPdNOfHeOweylHiaZUycN56ibkC70mSqfhctwoKAs7ibZvFsJMp8qsUlIwEwACAwHG766xNdYtW5q7icg\/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1\" alt=\"\u56fe\u7247\"\/><\/figure>\n\n\n\n<p>\u56fe4-QUIC\u76841-RTT\u63e1\u624b\u6d41\u7a0b<\/p>\n\n\n\n<p>\u6211\u4eec\u901a\u8fc7\u56fe4\u53ef\u4ee5\u770b\u5230\uff0c\u6574\u4e2a\u63e1\u624b\u8fc7\u7a0b\u9700\u8981 2\u6b21\u63e1\u624b\uff08\u7b2c\u4e09\u6b21\u63e1\u624b\u662f\u5e26\u4e86\u6570\u636e\u7684\uff09\uff0c\u6240\u4ee5\u6574\u4e2a\u63e1\u624b\u8fc7\u7a0b\u53ea\u9700\u89811-RTT\uff08RTT\u662f\u6307\u6570\u636e\u5305\u5728\u7f51\u7edc\u4e0a\u7684\u4e00\u4e2a\u6765\u56de\uff09\u7684\u65f6\u95f4\u3002<\/p>\n\n\n\n<p>1-RTT\u7684\u63e1\u624b\u4e3b\u8981\u5305\u542b\u4e24\u4e2a\u8fc7\u7a0b\uff1a<\/p>\n\n\n\n<p>1.\u5ba2\u6237\u7aef\u53d1\u9001Client Hello\u7ed9\u670d\u52a1\u7aef\uff1b<\/p>\n\n\n\n<p>2.\u670d\u52a1\u7aef\u56de\u590dServer Hello\u7ed9\u5ba2\u6237\u7aef\uff1b<\/p>\n\n\n\n<p>\u6211\u4eec\u901a\u8fc7\u4e0b\u56fe\u4e2d\u56fe5\u548c\u56fe6\u6765\u770bClient Hello\u548cServer Hello\u5177\u4f53\u90fd\u505a\u4e86\u5565\uff1a<\/p>\n\n\n\n<p><strong>\u7b2c\u4e00\u6b21\u63e1\u624b\uff08Client Hello\u62a5\u6587\uff09<\/strong>&nbsp;&nbsp; &nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/d4hoYJlxOjPdNOfHeOweylHiaZUycN56ib5FIeUMs8QWupIceXLH5yGFib0ERpgpAicT1OF7DJOmr2WaE32NR9KTxA\/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1\" alt=\"\u56fe\u7247\"\/><\/figure>\n\n\n\n<p>\u56fe5-Client Hello\u62a5\u6587<\/p>\n\n\n\n<p>\u9996\u5148\uff0cClient Hello\u5728\u6269\u5c55\u5b57\u6bb5\u91cc\u6807\u660e\u4e86\u652f\u6301\u7684TLS\u7248\u672c\uff08Supported Version\uff1aTLS1.3\uff09\u3002\u503c\u5f97\u6ce8\u610f\u7684\u662fVersion\u5b57\u6bb5\u5fc5\u987b\u8981\u662fTLS1.2\uff0c\u8fd9\u662f\u56e0\u4e3aTLS1.2\u5df2\u7ecf\u5728\u4e92\u8054\u7f51\u4e0a\u5b58\u5728\u4e8610\u5e74\u3002\u7f51\u7edc\u4e2d\u5927\u91cf\u7684\u7f51\u7edc\u4e2d\u95f4\u8bbe\u5907\u90fd\u5341\u5206\u8001\u65e7\uff0c\u8fd9\u4e9b\u7f51\u7edc\u8bbe\u5907\u4f1a\u8bc6\u522b\u4e2d\u95f4\u7684TLS\u63e1\u624b\u5934\u90e8\uff0c\u6240\u4ee5TLS1.3\u7684\u51fa\u73b0\u5982\u679c\u5f15\u5165\u4e86\u672a\u77e5\u7684TLS Version \u5fc5\u7136\u4f1a\u5b58\u5728\u5927\u91cf\u7684\u63e1\u624b\u5931\u8d25\u3002&nbsp;&nbsp; &nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/d4hoYJlxOjPdNOfHeOweylHiaZUycN56ibCKXmbuXVecwFTldu5HS3XlHh7dJPkxMhsAuyLxDjX1vew6IZUxkKhQ\/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1\" alt=\"\u56fe\u7247\"\/><\/figure>\n\n\n\n<p>\u56fe6-Client Hello\u62a5\u6587<\/p>\n\n\n\n<p>\u5176\u6b21\uff0cClientHello\u4e2d\u5305\u542b\u4e86\u975e\u5e38\u91cd\u8981\u7684key_share\u6269\u5c55\uff1a\u5ba2\u6237\u7aef\u5728\u53d1\u9001\u4e4b\u524d\uff0c\u4f1a\u81ea\u5df1\u6839\u636eDHE\u7b97\u6cd5\u751f\u6210\u4e00\u4e2a\u516c\u79c1\u94a5\u5bf9\u3002\u53d1\u9001Client Hello\u62a5\u6587\u7684\u65f6\u5019\u4f1a\u628a\u8fd9\u4e2a\u516c\u94a5\u53d1\u8fc7\u53bb\uff0c\u90a3\u4e48\u8fd9\u4e2a\u516c\u94a5\u5c31\u5b58\u5728\u4e8ekey_share\u4e2d\uff0ckey_share\u8fd8\u5305\u542b\u4e86\u5ba2\u6237\u7aef\u6240\u9009\u62e9\u7684\u66f2\u7ebfX25519\u3002\u603b\u4e4b\uff0ckey_share\u662f\u5ba2\u6237\u7aef\u63d0\u524d\u751f\u6210\u597d\u7684\u516c\u94a5\u4fe1\u606f\u3002<\/p>\n\n\n\n<p>\u6700\u540e\uff0cClient Hello\u91cc\u8fd8\u5305\u62ec\u4e86\uff1a\u5ba2\u6237\u7aef\u652f\u6301\u7684\u7b97\u6cd5\u5957\u3001\u5ba2\u6237\u7aef\u6240\u652f\u6301\u7684\u692d\u5706\u66f2\u7ebf\u4ee5\u53ca\u7b7e\u540d\u7b97\u6cd5\u3001psk\u7684\u6a21\u5f0f\u7b49\u7b49\uff0c\u4e00\u8d77\u53d1\u7ed9\u670d\u52a1\u7aef\u3002&nbsp;&nbsp; &nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/d4hoYJlxOjPdNOfHeOweylHiaZUycN56ibPjOIpkOyZV1yKhunHrGOBNGJic5d28nfqgiamOlBicu7jH3DPFDxk0S1g\/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1\" alt=\"\u56fe\u7247\"\/><\/figure>\n\n\n\n<p>\u56fe7-Client Hello\u62a5\u6587<\/p>\n\n\n\n<p><strong>\u7b2c\u4e8c\u6b21\u63e1\u624b\uff1a\uff08Server Hello\u62a5\u6587\uff09<\/strong>&nbsp;&nbsp; &nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/d4hoYJlxOjPdNOfHeOweylHiaZUycN56ibiakIDjgZSo8Y5oZ7JbuI0W1wv2kUNWibcicHkbRC81gNBr2ZicVjVg9IPA\/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1\" alt=\"\u56fe\u7247\"\/><\/figure>\n\n\n\n<p>\u56fe8-Server Hello\u62a5\u6587<\/p>\n\n\n\n<p>\u670d\u52a1\u7aef\u81ea\u5df1\u6839\u636eDHE\u7b97\u6cd5\u4e5f\u751f\u6210\u4e86\u4e00\u4e2a\u516c\u79c1\u94a5\u5bf9\uff0c\u540c\u6837\u7684\uff0cKey_share\u6269\u5c55\u4fe1\u606f\u4e2d\u4e5f\u5305\u542b\u4e86 \u670d\u52a1\u7aef\u7684\u516c\u94a5\u4fe1\u606f\u3002\u670d\u52a1\u7aef\u901a\u8fc7ServerHello\u62a5\u6587\u5c06\u8fd9\u4e9b\u4fe1\u606f\u53d1\u9001\u7ed9\u5ba2\u6237\u7aef\u3002<\/p>\n\n\n\n<p>\u81f3\u6b64\u4e3a\u6b62\uff0c\u53cc\u65b9\uff08\u5ba2\u6237\u7aef\u670d\u52a1\u7aef\uff09\u90fd\u62ff\u5230\u4e86\u5bf9\u65b9\u7684\u516c\u94a5\u4fe1\u606f\uff0c\u7136\u540e\u7ed3\u5408\u81ea\u5df1\u7684\u79c1\u94a5\u4fe1\u606f\uff0c\u751f\u6210pre-master key\uff0c\u5728\u8fd9\u91cc\u5b98\u65b9\u7684\u53eb\u6cd5\u662f\uff08client_handshake_traffic_secret\u548cserver_handshake_traffic_secret\uff09\uff0c\u7136\u540e\u6839\u636e\u4ee5\u4e0b\u7b97\u6cd5\u8fdb\u884c\u7b97\u51fakey\u548civ\uff0c\u4f7f\u7528key\u548civ\u5bf9Server Hello\u4e4b\u540e\u6240\u6709\u7684\u63e1\u624b\u6d88\u606f\u8fdb\u884c\u52a0\u5bc6\u3002<\/p>\n\n\n\n<p>\u6ce8\u610f\uff1a\u5728\u63e1\u624b\u5b8c\u6210\u4e4b\u540e\uff0c\u670d\u52a1\u7aef\u4f1a\u53d1\u9001\u4e00\u4e2aNew Session Ticket\u62a5\u6587\u7ed9\u5ba2\u6237\u7aef\uff0c\u8fd9\u4e2a\u5305\u975e\u5e38\u91cd\u8981\uff0c\u8fd9\u662f0-RTT\u5b9e\u73b0\u7684\u57fa\u7840\u3002&nbsp;&nbsp; &nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/d4hoYJlxOjPdNOfHeOweylHiaZUycN56ibVYovU7AibfqxSIiavrYuzmaFCuBYo1uGgmlXkt7P6fgEicen1uBeZfuIg\/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1\" alt=\"\u56fe\u7247\"\/><\/figure>\n\n\n\n<p>\u56fe9-New Session Ticket\u62a5\u6587<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>2.1.2 QUIC\u76840-RTT\u63e1\u624b<\/strong>&nbsp;&nbsp;<\/h3>\n\n\n\n<p>\u8fd9\u4e2a\u529f\u80fd\u7c7b\u4f3c\u4e8eTLS1.2\u7684\u4f1a\u8bdd\u590d\u7528\uff0c\u6216\u8005\u8bf40-RTT\u662f\u57fa\u4e8e\u4f1a\u8bdd\u590d\u7528\u529f\u80fd\u7684\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/d4hoYJlxOjPdNOfHeOweylHiaZUycN56ibV94vaTic2kwnY1lj5c4cMrDLKVc9PWDicQWuIneG450N8xwHs3SiaHEvw\/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1\" alt=\"\u56fe\u7247\"\/><\/figure>\n\n\n\n<p>\u56fe10- QUIC\u76840-RTT\u6d41\u7a0b\u56fe<\/p>\n\n\n\n<p>\u901a\u8fc7\u4e0a\u9762\u56fe10\u6211\u4eec\u53ef\u4ee5\u770b\u5230\uff0cclient\u548cserver\u5728\u5efa\u8fde\u65f6\uff0c\u4ecd\u7136\u9700\u8981\u4e24\u6b21\u63e1\u624b\uff0c\u4ecd\u7136\u9700\u89811\u4e2artt\uff0c\u4f46\u662f\u4e3a\u4ec0\u4e48\u6211\u4eec\u8bf4\u8fd9\u662f0-rtt\u5462\uff0c\u662f\u56e0\u4e3aclient\u5728\u53d1\u9001\u7b2c\u4e00\u4e2a\u5305client hello\u65f6\uff0c\u5c31\u5e26\u4e0a\u4e86\u6570\u636e\uff08HTTP \u8bf7\u6c42\uff09\uff0c\u4ece\u4ec0\u4e48\u65f6\u5019\u5f00\u59cb\u53d1\u9001\u6570\u636e\u8fd9\u4e2a\u89d2\u5ea6\u4e0a\u6765\u770b\uff0c\u7684\u786e\u662f0-RTT\u3002<\/p>\n\n\n\n<p>\u6211\u4eec\u901a\u8fc7\u6293\u5305\u6765\u770b0-RTT\u7684\u8fc7\u7a0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/d4hoYJlxOjPdNOfHeOweylHiaZUycN56ibUghicWOticl7zUnwmky2jcOia3PxnU96vUmGQSn2UvzCsaL9wLymicWGfw\/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1\" alt=\"\u56fe\u7247\"\/><\/figure>\n\n\n\n<p>\u56fe11- QUIC\u76840-RTT\u6293\u5305<\/p>\n\n\n\n<p>\u6240\u4ee5\u771f\u6b63\u5728\u5b9e\u73b00-RTT\u7684\u65f6\u5019\uff0c\u8bf7\u6c42\u7684\u6570\u636e\u5e76\u4e0d\u4f1a\u8ddfInitial\u62a5\u6587\uff08\u5185\u542bClient Hello\uff09\u4e00\u8d77\u53d1\u9001\uff0c\u800c\u662f\u5355\u72ec\u4e00\u4e2a\u6570\u636e\u5305\uff080-RTT\u5305\uff09\u8fdb\u884c\u53d1\u9001\uff0c\u53ea\u4e0d\u8fc7\u662f\u8ddfInitial\u5305\u540c\u65f6\u8fdb\u884c\u53d1\u9001\u800c\u5df2\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/d4hoYJlxOjPdNOfHeOweylHiaZUycN56ib7FWIvZptOibBRLcuiaVEPc4TqTwhFeT64KAN1LIzqib1prgGoX06j63iaQ\/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1\" alt=\"\u56fe\u7247\"\/><\/figure>\n\n\n\n<p>\u56fe12- QUIC\u76840-RTT\u5305&nbsp;&nbsp; &nbsp;<\/p>\n\n\n\n<p>\u6211\u4eec\u5355\u72ec\u770bInitial\u62a5\u6587\u53d1\u73b0\uff0c\u9664\u4e86pre_share_key\u3001early-data\u6807\u8bc6\u7b49\u4fe1\u606f\u4e0e1-RTT\u65f6\u4e0d\u540c\uff0c\u5176\u4ed6\u5e76\u65e0\u533a\u522b\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>2.1.3 QUIC\u5efa\u8fde\u9700\u8981\u6ce8\u610f\u7684\u95ee\u9898&nbsp;&nbsp;<\/strong><\/h3>\n\n\n\n<p>\u7b2c\u4e00\uff0cQUIC\u5b9e\u73b0\u7684\u65f6\u5019\uff0c\u5fc5\u987b\u7f13\u5b58\u6536\u5230\u7684\u4e71\u5e8f\u52a0\u5bc6\u5e27\uff0c\u8fd9\u4e2a\u7f13\u5b58\u81f3\u5c11\u8981\u5927\u4e8e4096\u5b57\u8282\u3002\u5f53\u7136\u53ef\u4ee5\u9009\u62e9\u7f13\u5b58\u66f4\u591a\u7684\u6570\u636e\uff0c\u66f4\u5927\u7684\u7f13\u5b58\u4e0a\u9650\u610f\u5473\u7740\u53ef\u4ee5\u4ea4\u6362\u66f4\u5927\u7684\u5bc6\u94a5\u6216\u8bc1\u4e66\u3002\u7ec8\u7aef\u7684\u7f13\u5b58\u533a\u5927\u5c0f\u4e0d\u5fc5\u5728\u6574\u4e2a\u8fde\u63a5\u751f\u547d\u5468\u671f\u5185\u4fdd\u6301\u4e0d\u53d8\u3002\u8fd9\u91cc\u8bb0\u4f4f\uff1a\u4e71\u5e8f\u5e27\u4e00\u5b9a\u8981\u7f13\u5b58\u4e0b\u6765\u3002\u5982\u679c\u4e0d\u7f13\u5b58\uff0c\u4f1a\u5bfc\u81f4\u8fde\u63a5\u5931\u8d25\u3002\u5982\u679c\u7ec8\u7aef\u7684\u7f13\u5b58\u533a\u4e0d\u591f\u7528\u4e86\uff0c\u5219\u5176\u53ef\u4ee5\u901a\u8fc7\u6682\u65f6\u6269\u5927\u7f13\u5b58\u7a7a\u95f4\u786e\u4fdd\u63e1\u624b\u5b8c\u6210\u3002\u5982\u679c\u7ec8\u7aef\u4e0d\u6269\u5927\u5176\u7f13\u5b58\uff0c\u5219\u5176\u5fc5\u987b\u4ee5\u9519\u8bef\u7801CRYPTO_BUFFER_EXCEEDED\u5173\u95ed\u8fde\u63a5\u3002<\/p>\n\n\n\n<p>\u7b2c\u4e8c\uff0c0-RTT\u5b58\u5728\u524d\u5411\u5b89\u5168\u95ee\u9898\uff0c\u8bf7\u614e\u7528\uff01<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>2.2\u8fde\u63a5\u8fc1\u79fb<\/strong>&nbsp;&nbsp;<\/h2>\n\n\n\n<p>QUIC\u901a\u8fc7\u8fde\u63a5ID\u5b9e\u73b0\u4e86\u8fde\u63a5\u8fc1\u79fb\u3002<\/p>\n\n\n\n<p>\u6211\u4eec\u7ecf\u5e38\u9700\u8981\u5728WiFi\u548c4G\u4e4b\u95f4\u8fdb\u884c\u5207\u6362\uff0c\u6bd4\u5982\u6211\u4eec\u5728\u5bb6\u91cc\u65f6\u4f7f\u7528WiFi\uff0c\u51fa\u95e8\u5728\u8def\u4e0a\uff0c\u5207\u6362\u52304G\u62165G\uff0c\u5230\u4e86\u5546\u573a\uff0c\u53c8\u8fde\u4e0a\u4e86\u5546\u573a\u7684WiFi\uff0c\u5230\u4e86\u9910\u5385\uff0c\u53c8\u5207\u6362\u5230\u4e86\u9910\u5385\u7684WiFi\uff0c\u6240\u4ee5\u6211\u4eec\u7684\u65e5\u5e38\u751f\u6d3b\u4e2d\u9700\u8981\u7ecf\u5e38\u6027\u7684\u5207\u6362\u7f51\u7edc\uff0c\u90a3\u6bcf\u4e00\u6b21\u7684\u5207\u6362\u7f51\u7edc\uff0c\u90fd\u5c06\u5bfc\u81f4\u6211\u4eec\u7684IP\u5730\u5740\u53d1\u751f\u53d8\u5316\u3002<\/p>\n\n\n\n<p>\u4f20\u7edf\u7684TCP\u534f\u8bae\u662f\u4ee5\u56db\u5143\u7ec4\uff08\u6e90IP\u5730\u5740\u3001\u6e90\u7aef\u53e3\u53f7\u3001\u76ee\u7684ID\u5730\u5740\u3001\u76ee\u7684\u7aef\u53e3\u53f7\uff09\u6765\u6807\u8bc6\u4e00\u6761\u8fde\u63a5\uff0c\u90a3\u4e48\u4e00\u65e6\u56db\u5143\u7ec4\u7684\u4efb\u4f55\u4e00\u4e2a\u5143\u7d20\u53d1\u751f\u4e86\u6539\u53d8\uff0c\u8fd9\u6761\u8fde\u63a5\u5c31\u4f1a\u65ad\u6389\uff0c\u90a3\u4e48\u8fd9\u6761\u8fde\u63a5\u4e2d\u6b63\u5728\u4f20\u8f93\u7684\u6570\u636e\u5c31\u4f1a\u65ad\u6389\uff0c\u5207\u6362\u5230\u65b0\u7684\u7f51\u7edc\u540e\u53ef\u80fd\u9700\u8981\u91cd\u65b0\u53bb\u5efa\u7acb\u8fde\u63a5\uff0c\u7136\u540e\u91cd\u65b0\u53d1\u9001\u6570\u636e\u3002\u8fd9\u5c06\u4f1a\u5bfc\u81f4\u7528\u6237\u7684\u7f51\u7edc\u4f1a\u201c\u5361\u201d\u4e00\u4e0b\u3002&nbsp;&nbsp; &nbsp;<\/p>\n\n\n\n<p>\u4f46\u662f\uff0cQUIC\u4e0d\u518d\u4ee5\u56db\u5143\u7ec4\u4f5c\u4e3a\u552f\u4e00\u6807\u8bc6\uff0cQUIC\u4f7f\u7528\u8fde\u63a5ID\u6765\u6807\u8bc6\u4e00\u6761\u8fde\u63a5\uff0c\u65e0\u8bba\u4f60\u7684\u7f51\u7edc\u5982\u4f55\u5207\u6362\uff0c\u53ea\u8981\u8fde\u63a5ID\u4e0d\u53d8\uff0c\u90a3\u4e48\u8fd9\u6761\u8fde\u63a5\u5c31\u4e0d\u4f1a\u65ad\uff0c\u8fd9\u5c31\u53eb\u8fde\u63a5\u8fc1\u79fb\uff01<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/d4hoYJlxOjPdNOfHeOweylHiaZUycN56ibcVebmO6dDNQ3FcbicPD5A4bh92LeictgTg7LEbg3REFNnqicmv5GgRVzA\/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1\" alt=\"\u56fe\u7247\"\/><\/figure>\n\n\n\n<p>\u56fe13-QUIC\u8fde\u63a5\u8fc1\u79fb\u4ecb\u7ecd<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>2.2.1\u8fde\u63a5ID<\/strong>&nbsp;&nbsp;<\/h3>\n\n\n\n<p>\u6bcf\u6761\u8fde\u63a5\u62e5\u6709\u4e00\u7ec4\u8fde\u63a5\u6807\u8bc6\u7b26\uff0c\u4e5f\u5c31\u662f\u8fde\u63a5ID\uff0c\u6bcf\u4e2a\u8fde\u63a5ID\u90fd\u80fd\u6807\u8bc6\u8fd9\u6761\u8fde\u63a5\u3002\u8fde\u63a5ID\u662f\u7531\u4e00\u7aef\u72ec\u7acb\u9009\u62e9\u7684\uff0c\u6bcf\u4e2a\u7aef\uff08\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u7aef\u7edf\u79f0\u4e3a\u7aef\uff09\u9009\u62e9\u8fde\u63a5ID\u4f9b\u5bf9\u7aef\u4f7f\u7528\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u5ba2\u6237\u7aef\u751f\u6210\u7684\u8fde\u63a5ID\u4f9b\u670d\u52a1\u7aef\u4f7f\u7528\uff08\u670d\u52a1\u7aef\u53d1\u9001\u6570\u636e\u65f6\u4f7f\u7528\u5ba2\u6237\u7aef\u751f\u6210\u7684\u8fde\u63a5ID\u4f5c\u4e3a\u76ee\u7684\u8fde\u63a5ID\uff09\uff0c\u53cd\u8fc7\u6765\u4e00\u6837\u7684\u3002<\/p>\n\n\n\n<p>\u8fde\u63a5ID\u7684\u4e3b\u8981\u529f\u80fd\u662f\u786e\u4fdd\u5e95\u5c42\u534f\u8bae\uff08UDP\u3001IP\u53ca\u66f4\u5e95\u5c42\u7684\u534f\u8bae\u6808\uff09\u53d1\u751f\u5730\u5740\u53d8\u66f4\uff08\u6bd4\u5982IP\u5730\u5740\u53d8\u4e86\uff0c\u6216\u8005\u7aef\u53e3\u53f7\u53d8\u4e86\uff09\u65f6\u4e0d\u4f1a\u5bfc\u81f4\u4e00\u4e2aQUIC\u8fde\u63a5\u7684\u6570\u636e\u5305\u88ab\u4f20\u8f93\u5230\u9519\u8bef\u7684QUIC\u7ec8\u7aef\uff08\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u7aef\u7edf\u79f0\u4e3a\u7ec8\u7aef\uff09\u4e0a\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>2.2.2 QUIC\u7684\u8fde\u63a5\u8fc1\u79fb\u8fc7\u7a0b<\/strong>&nbsp;&nbsp; &nbsp;<\/h3>\n\n\n\n<p>QUIC\u9650\u5236\u8fde\u63a5\u8fc1\u79fb\u4e3a\u4ec5\u5ba2\u6237\u7aef\u53ef\u4ee5\u53d1\u8d77\uff0c\u5ba2\u6237\u7aef\u8d1f\u8d23\u53d1\u8d77\u6240\u6709\u8fc1\u79fb\u3002\u5982\u679c\u5ba2\u6237\u7aef\u63a5\u6536\u5230\u4e86\u4e00\u4e2a\u672a\u77e5\u7684\u670d\u52a1\u5668\u53d1\u6765\u7684\u6570\u636e\u5305\uff0c\u90a3\u4e48\u5ba2\u6237\u7aef\u5fc5\u987b\u4e22\u5f03\u8fd9\u4e9b\u6570\u636e\u5305\u3002<\/p>\n\n\n\n<p>\u5982\u56fe14\u6240\u793a\uff0c\u8fde\u63a5\u8fc1\u79fb\u8fc7\u7a0b\u603b\u5171\u9700\u8981\u56db\u4e2a\u6b65\u9aa4\u3002<\/p>\n\n\n\n<p>1.\u8fde\u63a5\u8fc1\u79fb\u4e4b\u524d\uff0c\u5ba2\u6237\u7aef\u4f7f\u7528IP1\u548c\u670d\u52a1\u7aef\u8fdb\u884c\u901a\u4fe1\uff1b<\/p>\n\n\n\n<p>2.\u5ba2\u6237\u7aefIP\u53d8\u6210IP2\uff0c\u5e76\u4e14\u4f7f\u7528IP2\u53d1\u9001\u975e\u63a2\u6d4b\u5e27\u7ed9\u670d\u52a1\u7aef\uff1b<\/p>\n\n\n\n<p>3.\u542f\u52a8\u8def\u5f84\u9a8c\u8bc1\uff08\u53cc\u65b9\u90fd\u9700\u8981\u4e92\u76f8\u9a8c\u8bc1\uff09\uff0c\u901a\u8fc7PATH_CHANLLENGE\u5e27\u548cPATH_RESPONSE\u5e27\u8fdb\u884c\u9a8c\u8bc1\u3002<\/p>\n\n\n\n<p>4.\u9a8c\u8bc1\u901a\u8fc7\u540e\uff0c\u4f7f\u7528IP2\u8fdb\u884c\u901a\u4fe1\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/d4hoYJlxOjPdNOfHeOweylHiaZUycN56ibqLKfg3V12t4yYeo52I5cz78YIKX5sADehVWXQeOycsOC49b0eF1rvA\/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1\" alt=\"\u56fe\u7247\"\/><\/figure>\n\n\n\n<p>\u56fe14- \u8fde\u63a5\u8fc1\u79fb\u6d41\u7a0b\u56fe&nbsp; &nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>2.3 \u89e3\u51b3TCP\u961f\u5934\u963b\u585e\u95ee\u9898<\/strong>&nbsp;&nbsp;<\/h2>\n\n\n\n<p>\u5728HTTP\/2\u4e2d\u5f15\u5165\u4e86\u6d41\u7684\u6982\u5ff5\u3002\u76ee\u7684\u662f\u5b9e\u73b0 \u591a\u4e2a\u8bf7\u6c42\u5728\u540c\u4e00\u4e2a\u8fde\u63a5\u4e0a\u5e76\u53d1\uff0c\u4ece\u800c\u63d0\u5347\u7f51\u9875\u52a0\u8f7d\u7684\u6548\u7387\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/d4hoYJlxOjPdNOfHeOweylHiaZUycN56ibydJneadUHxvauZtXV2DOUaGQyGUTXtdvUkvXDBbWgd1eUbFfHO03bw\/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1\" alt=\"\u56fe\u7247\"\/><\/figure>\n\n\n\n<p>\u56fe15-QUIC\u89e3\u51b3TCP\u961f\u5934\u963b\u585e\u95ee\u9898<\/p>\n\n\n\n<p>\u7531\u56fe15\u6765\u770b\uff0c\u5047\u8bbe\u6709\u4e24\u4e2a\u8bf7\u6c42\u540c\u65f6\u53d1\u9001\uff0c\u7ea2\u8272\u7684\u662f\u8bf7\u6c421\uff0c\u84dd\u8272\u7684\u662f\u8bf7\u6c422\uff0c\u8fd9\u4e24\u4e2a\u8bf7\u6c42\u5728\u4e24\u6761\u4e0d\u540c\u7684\u6d41\u4e2d\u8fdb\u884c\u4f20\u8f93\u3002\u5047\u8bbe\u5728\u4f20\u8f93\u8fc7\u7a0b\u4e2d\uff0c\u8bf7\u6c421\u7684\u67d0\u4e2a\u6570\u636e\u5305\u4e22\u4e86\uff0c\u5982\u679c\u662fTCP\uff0c\u5373\u4f7f\u8bf7\u6c422\u7684\u6240\u6709\u6570\u636e\u5305\u90fd\u6536\u5230\u4e86\uff0c\u4f46\u662f\u4e5f\u53ea\u80fd\u963b\u585e\u5728\u5185\u6838\u7f13\u51b2\u533a\u4e2d\uff0c\u65e0\u6cd5\u4ea4\u7ed9\u5e94\u7528\u5c42\u3002\u4f46\u662fQUIC\u5c31\u4e0d\u4e00\u6837\u4e86\uff0c\u8bf7\u6c421\u7684\u6570\u636e\u5305\u4e22\u4e86\u53ea\u4f1a\u963b\u585e\u8bf7\u6c421\uff0c\u8bf7\u6c422\u4e0d\u4f1a\u53d7\u5230\u963b\u585e\u3002<\/p>\n\n\n\n<p>\u6709\u4e9b\u4eba\u4e0d\u7981\u53d1\u95ee\uff0c\u4e0d\u662f\u8bf4HTTP2\u4e5f\u6709\u6d41\u7684\u6982\u5ff5\u5417\uff0c\u4e3a\u4ec0\u4e48\u53ea\u6709QUIC\u624d\u80fd\u89e3\u51b3\u5462\uff0c\u8fd9\u4e2a\u6839\u672c\u539f\u56e0\u5c31\u5728\u4e8e\uff0cHTTP2\u7684\u4f20\u8f93\u5c42\u7528\u7684TCP\uff0cTCP\u7684\u5b9e\u73b0\u662f\u5728\u5185\u6838\u6001\u7684\uff0c\u800c\u6d41\u662f\u5b9e\u73b0\u5728\u7528\u6237\u6001\u5ea6\uff0cTCP\u662f\u770b\u4e0d\u5230\u201c\u6d41\u201d\u7684\uff0c\u6240\u4ee5\u5728TCP\u4e2d\uff0c\u5b83\u4e0d\u77e5\u9053\u8fd9\u4e2a\u6570\u636e\u5305\u662f\u8bf7\u6c421\u8fd8\u662f\u8bf7\u6c422\u7684\uff0c\u53ea\u4f1a\u6839\u636eseq number\u6765\u5224\u65ad\u5305\u7684\u5148\u540e\u987a\u5e8f\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>2.4 \u66f4\u4f18\u7684\u62e5\u585e\u63a7\u5236\u7b97\u6cd5<\/strong>&nbsp;&nbsp;<\/h3>\n\n\n\n<p>\u62e5\u585e\u63a7\u5236\u7b97\u6cd5\u4e2d\u6700\u91cd\u8981\u7684\u4e00\u4e2a\u53c2\u6570\u662f RTT\uff0cRTT\u7684\u51c6\u786e\u6027\u51b3\u5b9a\u4e86\u62e5\u585e\u63a7\u5236\u7b97\u6cd5\u7684\u51c6\u786e\u6027\uff1b\u7136\u800c\uff0cTCP\u7684RTT\u6d4b\u91cf\u5f80\u5f80\u4e0d\u51c6\u786e\uff0cQUIC\u7684RTT\u6d4b\u91cf\u662f\u51c6\u786e\u7684\u3002&nbsp;&nbsp; &nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/d4hoYJlxOjPdNOfHeOweylHiaZUycN56ibs454kTP5n3fZ7Aic2AYFWCB0ia1qWJiactbUkvf3Pk3hdQZ59GgnBLKww\/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1\" alt=\"\u56fe\u7247\"\/><\/figure>\n\n\n\n<p>\u56fe16-TCP\u8ba1\u7b97RTT<\/p>\n\n\n\n<p>\u5982\u56fe16\u6240\u793a\uff1a\u7531\u4e8e\u7f51\u7edc\u4e2d\u7ecf\u5e38\u51fa\u73b0\u4e22\u5305\uff0c\u9700\u8981\u91cd\u4f20\uff0c\u5728TCP\u534f\u8bae\u4e2d\uff0c\u521d\u59cb\u5305\u548c\u91cd\u4f20\u5305\u7684\u5e8f\u53f7\u662f\u4e00\u6837\u7684\uff0c\u62e5\u585e\u63a7\u5236\u7b97\u6cd5\u8fdb\u884c\u8ba1\u7b97RTT\u7684\u65f6\u5019\uff0c\u65e0\u6cd5\u533a\u522b\u662f\u521d\u59cb\u5305\u8fd8\u662f\u91cd\u4f20\u5305\uff0c\u8fd9\u5c06\u5bfc\u81f4RTT\u7684\u8ba1\u7b97\u503c\u8981\u4e48\u504f\u5927\uff0c\u8981\u4e48\u504f\u5c0f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/d4hoYJlxOjPdNOfHeOweylHiaZUycN56ibRP4Miajen673cJRRrqpZQrhmLYFzOJyQZKbO3bQVfy3MPu9fczAfCEA\/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1\" alt=\"\u56fe\u7247\"\/><\/figure>\n\n\n\n<p>\u56fe17-QUIC\u8ba1\u7b97RTT&nbsp;&nbsp; &nbsp;<\/p>\n\n\n\n<p>\u5982\u56fe17\u6240\u793a\uff1aQUIC\u901a\u8fc7Packet Number\u6765\u6807\u8bc6\u5305\u7684\u5e8f\u53f7\uff0c\u800c\u4e14\u89c4\u5b9aPacket Number\u53ea\u80fd\u5355\u8c03\u9012\u589e\uff0c\u8fd9\u4e5f\u5c31\u89e3\u51b3\u4e86\u521d\u59cb\u5305\u548c\u91cd\u4f20\u5305\u7684\u4e8c\u4e49\u6027\u3002\u4ece\u800c\u4fdd\u8bc1RTT\u7684\u503c\u662f\u51c6\u786e\u7684\u3002<\/p>\n\n\n\n<p>\u53e6\u5916\uff0c\u4e0d\u540c\u4e8eTCP\uff0cQUIC\u7684\u62e5\u585e\u63a7\u5236\u7b97\u6cd5\u662f\u53ef\u63d2\u62d4\u7684\uff0c\u7531\u4e8e\u5176\u5b9e\u73b0\u5728\u7528\u6237\u6001\uff0c\u670d\u52a1\u53ef\u4ee5\u6839\u636e\u4e0d\u540c\u7684\u4e1a\u52a1\uff0c\u751a\u81f3\u4e0d\u540c\u7684\u8fde\u63a5\u7075\u6d3b\u9009\u62e9\u4f7f\u7528\u4e0d\u540c\u7684\u62e5\u585e\u63a7\u5236\u7b97\u6cd5\u3002\uff08Reno\u3001New Reno\u3001Cubic\u3001BBR\u7b49\u7b97\u6cd5\u90fd\u6709\u81ea\u5df1\u9002\u5408\u7684\u573a\u666f\uff09<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>2.5 QUIC\u7684\u4e24\u7ea7\u6d41\u91cf\u63a7\u5236&nbsp;&nbsp;<\/strong><\/h2>\n\n\n\n<p>\u5f88\u591a\u4eba\u641e\u4e0d\u6e05\u695a\u6d41\u91cf\u63a7\u5236\u4e0e\u62e5\u585e\u63a7\u5236\u7684\u533a\u522b\u3002\u4e8c\u8005\u6709\u672c\u8d28\u4e0a\u7684\u533a\u522b\u3002<\/p>\n\n\n\n<p><strong>\u6d41\u91cf\u63a7\u5236\u8981\u89e3\u51b3\u7684\u95ee\u9898\u662f\uff1a<\/strong>\u63a5\u6536\u65b9\u63a7\u5236\u53d1\u9001\u65b9\u7684\u6570\u636e\u53d1\u9001\u7684\u901f\u5ea6\uff0c\u5c31\u662f\u6211\u7684\u63a5\u6536\u80fd\u529b\u5c31\u90a3\u4e48\u5927\u70b9\uff0c\u4f60\u522b\u53d1\u592a\u5feb\u4e86\uff0c\u4f60\u53d1\u592a\u5feb\u4e86\u6211\u627f\u53d7\u4e0d\u4f4f\uff0c\u4f1a\u7ed9\u4f60\u4e22\u6389 \u4f60\u8fd8\u5f97\u91cd\u65b0\u53d1\u3002&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<br><strong>\u62e5\u585e\u63a7\u5236\u8981\u89e3\u51b3\u7684\u95ee\u9898\u662f\uff1a<\/strong>\u6570\u636e\u5728\u7f51\u7edc\u7684\u4f20\u8f93\u8fc7\u7a0b\u4e2d\uff0c\u662f\u5426\u7f51\u7edc\u6709\u62e5\u585e\uff0c\u662f\u5426\u6709\u4e22\u5305\uff0c\u662f\u5426\u6709\u4e71\u5e8f\u7b49\u95ee\u9898\u3002\u5982\u679c\u4e2d\u95f4\u4f20\u8f93\u7684\u65f6\u5019\u7f51\u7edc\u7279\u522b\u5361\uff0c\u6570\u636e\u5305\u4e22\u5728\u4e2d\u95f4\u4e86\uff0c\u53d1\u9001\u65b9\u5c31\u9700\u8981\u91cd\u4f20\uff0c\u90a3\u4e48\u600e\u4e48\u5224\u65ad\u662f\u5426\u62e5\u585e\u4e86\uff0c\u91cd\u4f20\u8981\u600e\u4e48\u91cd\u4f20\u6cd5\uff0c\u6309\u7167\u4ec0\u4e48\u7b97\u6cd5\u8fdb\u884c\u53d1\u9001\u6570\u636e\u624d\u80fd\u5c3d\u53ef\u80fd\u907f\u514d\u6570\u636e\u5305\u5728\u4e2d\u95f4\u8def\u5f84\u4e22\u6389\uff0c\u8fd9\u662f\u62e5\u585e\u63a7\u5236\u7684\u6838\u5fc3\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5\uff0c\u6d41\u91cf\u63a7\u5236\u89e3\u51b3\u7684\u662f\u63a5\u6536\u65b9\u7684\u63a5\u6536\u80fd\u529b\u95ee\u9898\uff0c\u4e00\u822c\u91c7\u7528\u6ed1\u52a8\u7a97\u53e3\u7b97\u6cd5\uff1b\u62e5\u585e\u63a7\u5236\u8981\u89e3\u51b3\u7684\u662f\u4e2d\u95f4\u4f20\u8f93\u7684\u65f6\u5019\u7f51\u7edc\u662f\u5426\u62e5\u5835\u7684\u95ee\u9898\uff0c\u4e00\u822c\u91c7\u7528\u6162\u542f\u52a8\u3001\u62e5\u585e\u907f\u514d\u3001\u62e5\u585e\u6062\u590d\u3001\u5feb\u901f\u91cd\u4f20\u7b49\u7b97\u6cd5\u3002&nbsp; &nbsp; &nbsp; &nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/d4hoYJlxOjPdNOfHeOweylHiaZUycN56ibEvwpeEIDPibEgwWVoicUdT4e6c8lXIiaPibV4gHfuCGxJWiaLLOBKXuqVnQ\/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1\" alt=\"\u56fe\u7247\"\/><\/figure>\n\n\n\n<p>\u56fe18-QUIC\u6d41\u91cf\u63a7\u5236<\/p>\n\n\n\n<p>QUIC\u662f\u53cc\u7ea7\u6d41\u63a7\uff0c\u4e0d\u4ec5\u6709\u8fde\u63a5\u8fd9\u4e00\u4e2a\u7ea7\u522b\u7684\u6d41\u63a7\uff0c\u8fd8\u6709\u6d41\u8fd9\u4e2a\u7ea7\u522b\u7684\u6d41\u63a7\u3002\u5982\u4e0b\u56fe\u6240\u793a\uff0c\u6bcf\u4e2a\u6d41\u90fd\u6709\u81ea\u5df1\u7684\u53ef\u7528\u7a97\u53e3\uff0c\u53ef\u7528\u7a97\u53e3\u7684\u5927\u5c0f\u53d6\u51b3\u4e8e\u6700\u5927\u7a97\u53e3\u6570\u51cf\u53bb\u53d1\u9001\u51fa\u53bb\u7684\u6700\u5927\u504f\u79fb\u6570\uff0c\u8ddf\u4e2d\u95f4\u5df2\u7ecf\u53d1\u9001\u51fa\u53bb\u7684\u6570\u636e\u5305\uff0c\u662f\u5426\u6309\u987a\u5e8f\u6536\u5230\u4e86\u5bf9\u7aef\u7684ACK \u65e0\u5173\u3002<\/p>\n\n\n\n<h1 class=\"wp-block-heading\"><strong>3.QUIC\u534f\u8bae\u5982\u4f55\u4f18\u5316<\/strong>&nbsp;&nbsp;<\/h1>\n\n\n\n<p>QUIC\u534f\u8bae\u5b9a\u4e49\u4e86\u5f88\u591a\u4f18\u79c0\u7684\u529f\u80fd\uff0c\u4f46\u662f\u5728\u5b9e\u73b0\u7684\u8fc7\u7a0b\u4e2d\uff0c\u6211\u4eec\u4f1a\u9047\u5230\u5f88\u591a\u95ee\u9898\u5bfc\u81f4\u65e0\u6cd5\u8fbe\u5230\u9884\u671f\u7684\u6027\u80fd\uff0c\u6bd4\u59820-RTT\u7387\u5f88\u4f4e\uff0c\u8fde\u63a5\u8fc1\u79fb\u5931\u8d25\u7387\u5f88\u9ad8\u7b49\u7b49\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>3.1 QUIC\u76840-RTT\u6210\u529f\u7387\u4e0d\u9ad8<\/strong>&nbsp;&nbsp;<\/h2>\n\n\n\n<p>\u5bfc\u81f40-RTT\u6210\u529f\u7387\u4e0d\u9ad8\u7684\u539f\u56e0\u4e00\u822c\u6709\u5982\u4e0b\u51e0\u4e2a\uff1a<\/p>\n\n\n\n<p>1.\u670d\u52a1\u7aef\u4e00\u822c\u90fd\u662f\u96c6\u7fa4\uff0c\u5bf9\u4e8e\u5ba2\u6237\u7aef\u6765\u8bf4\uff0c\u5904\u7406\u8bf7\u6c42\u7684\u670d\u52a1\u7aef\u662f\u4e0d\u56fa\u5b9a\u7684\uff0c\u65b0\u7684\u8bf7\u6c42\u5230\u6765\u65f6\uff0c\u5982\u679c\u5f53\u524dclient\u6ca1\u6709\u8bf7\u6c42\u8fc7\u8be5\u670d\u52a1\u5668\uff0c\u5219\u670d\u52a1\u5668\u4e0a\u6ca1\u6709\u76f8\u5173\u4f1a\u8bdd\u4fe1\u606f\uff0c\u4f1a\u628a\u8be5\u8bf7\u6c42\u5f53\u505a\u4e00\u4e2a\u65b0\u7684\u8fde\u63a5\u6765\u5904\u7406\uff0c\u91cd\u65b0\u8d701-RTT\u3002&nbsp;&nbsp; &nbsp;<\/p>\n\n\n\n<p>\u9488\u5bf9\u6b64\u79cd\u60c5\u51b5\uff0c\u6211\u4eec\u53ef\u4ee5\u8003\u8651\u96c6\u7fa4\u4e2d\u6240\u6709\u7684\u670d\u52a1\u5668\u4f7f\u7528\u76f8\u540c\u7684ticket\u6587\u4ef6\u3002<\/p>\n\n\n\n<p>2.\u5ba2\u6237\u7aefIP\u4e0d\u662f\u56fa\u5b9a\u7684\uff0c\u5728\u53d1\u751f\u8fde\u63a5\u8fc1\u79fb\u65f6\uff0c\u670d\u52a1\u7aef\u4e0b\u53d1\u7684token\u878d\u5408\u4e86\u5ba2\u6237\u7aef\u7684IP\uff0c\u8fd9\u4e2aIP\u53d8\u5316\u4e86\u7684\u8bdd\uff0c\u643a\u5e26token\u670d\u52a1\u7aef\u6821\u9a8c\u4e0d\u8fc7\uff0c0-RTT\u4f1a\u5931\u8d25\u3002<\/p>\n\n\n\n<p>\u9488\u5bf9\u8fd9\u4e2a\u95ee\u9898\uff0c\u6211\u4eec\u53ef\u4ee5\u8003\u8651\u91c7\u7528\u5982\u56fe19\u6240\u793a\u7684\u65b9\u6cd5\uff0c\u4f7f\u7528\u8bbe\u5907\u4fe1\u606f\u6216\u8005APP\u4fe1\u606f\u6765\u751f\u6210token\uff0c\u552f\u4e00\u6807\u8bc6\u4e00\u4e2a\u5ba2\u6237\u7aef\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/d4hoYJlxOjPdNOfHeOweylHiaZUycN56ibicA7pfVxsOdHpLg1plc1hbDVzeKL0FBibHnJPyTQJ9Jy3KHzkczTGWKg\/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1\" alt=\"\u56fe\u7247\"\/><\/figure>\n\n\n\n<p>\u56fe19- \u4f7f\u7528\u8bbe\u5907\u4fe1\u606f\u63d0\u9ad80-RTT\u7684\u6210\u529f\u7387<\/p>\n\n\n\n<p>3.Session Ticket\u8fc7\u671f\u65f6\u95f4\u9ed8\u8ba4\u662f2\u5929\uff0c\u8d85\u8fc72\u5929\u540e\u5c31\u4f1a\u5bfc\u81f40-RTT\u5931\u8d25\uff0c\u7136\u540e\u964d\u7ea7\u8d701-RTT\u3002\u53ef\u4ee5\u8003\u8651\u589e\u957f\u8fc7\u671f\u65f6\u95f4\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>3.2 \u5b9e\u73b0\u8fde\u63a5\u8fc1\u79fb\u5e76\u4e0d\u5bb9\u6613&nbsp;&nbsp;<\/strong><\/h2>\n\n\n\n<p>\u8fde\u63a5\u8fc1\u79fb\u7684\u5b9e\u73b0\uff0c\u4e0d\u53ef\u907f\u5f00\u7684\u4e24\u4e2a\u95ee\u9898\uff1a\u4e00\u4e2a\u662f\u56db\u5c42\u8d1f\u8f7d\u5747\u8861\u5668\u5bf9\u8fde\u63a5\u8fc1\u79fb\u7684\u5f71\u54cd\uff0c\u4e00\u4e2a\u662f\u4e03\u5c42\u8d1f\u8f7d\u5747\u8861\u5668\u5bf9\u8fde\u63a5\u8fc1\u79fb\u7684\u5f71\u54cd\u3002<\/p>\n\n\n\n<p><strong>\u56db\u5c42\u8d1f\u8f7d\u5747\u8861\u5668\u7684\u5f71\u54cd\uff1a<\/strong>LVS\u3001DPVS\u7b49\u56db\u5c42\u8d1f\u8f7d\u5747\u8861\u5de5\u5177\u57fa\u4e8e\u56db\u5143\u7ec4\u8fdb\u884c\u8f6c\u53d1\uff0c\u5f53\u8fde\u63a5\u8fc1\u79fb\u53d1\u751f\u65f6\uff0c\u56db\u5143\u7ec4\u4f1a\u53d1\u751f\u53d8\u5316\uff0c\u8be5\u7ec4\u4ef6\u5c31\u4f1a\u628a\u540c\u4e00\u4e2a\u8bf7\u6c42\u7684\u6570\u636e\u5305\u53d1\u9001\u5230\u4e0d\u540c\u7684\u540e\u7aef\u670d\u52a1\u5668\u4e0a\uff0c\u5bfc\u81f4\u8fde\u63a5\u8fc1\u79fb\u5931\u8d25\uff1b&nbsp;&nbsp; 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