{"id":3287,"date":"2024-03-24T04:28:36","date_gmt":"2024-03-23T20:28:36","guid":{"rendered":"http:\/\/www.ccwifi.cc\/blogs\/?p=3287"},"modified":"2024-03-24T04:28:36","modified_gmt":"2024-03-23T20:28:36","slug":"%e4%bf%9d%e5%ad%98%e6%8f%a1%e6%89%8b%e5%8c%85quic%e6%98%af%e5%a6%82%e4%bd%95%e8%a7%a3%e5%86%b3tcp9073","status":"publish","type":"post","link":"https:\/\/www.ccwifi.cc\/blogs\/2024\/03\/24\/%e4%bf%9d%e5%ad%98%e6%8f%a1%e6%89%8b%e5%8c%85quic%e6%98%af%e5%a6%82%e4%bd%95%e8%a7%a3%e5%86%b3tcp9073\/","title":{"rendered":"\u4fdd\u5b58\u63e1\u624b\u5305 QUIC \u662f\u5982\u4f55\u89e3\u51b3TCP \u6027\u80fd\u74f6\u9888\u7684\uff1f"},"content":{"rendered":"<div>\n<p>\u5728\u7ebfwifi\u8dd1\u5305 \u91d1\u521a\u5305\u8dd1\u5305 cap\u8dd1\u5305 hccapx ewsa\u5728\u7ebf \u5c31\u6765 <strong><a href=\"https:\/\/ccwifi.cc\" target=\"_blank\" rel=\"noopener\">\u63e1\u624b\u5305\u8dd1\u5305<\/a><\/strong><\/p>\n<p>\u5404\u4f4d\u597d \u53c8\u89c1\u9762\u4e86 \u6211\u662f\u66f9\u64cd \u4eca\u5929\u7ed9\u5927\u5bb6\u5e26\u6765\u4e00\u7bc7\u65b0\u7684\u6559\u7a0b<\/p>\n<p>\u5e0c\u671b\u5404\u4f4d\u7ec6\u5fc3\u5b66\u4e60 \u4f4e\u8c03\u7528\u7f51<\/p>\n<\/div>\n<p><img decoding=\"async\" src=\"http:\/\/www.ccwifi.cc\/blogs\/wp-content\/uploads\/2024\/03\/1711225714532_0.jpg\" alt=\"\u4fdd\u5b58\u63e1\u624b\u5305\"><\/p>\n<p>\u91cd\u65b0\u6574\u7406\uff1a\u6781\u5ba2\u91cd\u751f \u6587\u7ae0\u76ee\u5f55 \u4e00\u3001QUIC \u5982\u4f55\u89e3\u51b3TCP\u7684\u961f\u5934\u963b\u585e\u95ee\u9898\uff1f \u4e8c\u3001QUIC \u5982\u4f55\u4f18\u5316TCP \u7684\u8fde\u63a5\u7ba1\u7406\u673a\u5236\uff1f \u4e09\u3001QUIC \u5982\u4f55\u6539\u8fdbTCP \u7684\u62e5\u585e\u63a7\u5236\u673a\u5236\uff1f 1.1 TCP \u4e3a\u4f55\u4f1a\u6709\u961f\u5934\u963b\u585e\u95ee\u9898 HTTP\/2 \u76f8\u6bd4HTTP\/1.1 \u8bbe\u8ba1\u51fa\u7684\u4e00\u4e9b\u4f18\u79c0\u7684\u6539\u8fdb\u65b9\u6848\uff0c\u5927\u5e45\u63d0\u9ad8\u4e86HTTP \u7684\u7f51\u7edc\u5229\u7528\u6548\u7387\u3002HTTP\/2 \u5728\u5e94\u7528\u534f\u8bae\u5c42\u901a\u8fc7\u591a\u8def\u590d\u7528\u540c\u4e00\u4e2aTCP\u8fde\u63a5\u89e3\u51b3\u4e86\u961f\u5934\u963b\u585e\u95ee\u9898\uff0c\u4f46\u8fd9\u662f\u4ee5\u4e0b\u5c42\u534f\u8bae\u6bd4\u5982TCP \u534f\u8bae\u4e0d\u51fa\u73b0\u4efb\u4f55\u6570\u636e\u5305\u963b\u585e\u4e3a\u524d\u63d0\u7684\u3002TCP \u5728\u5b9e\u9645\u8fd0\u884c\u4e2d\uff0c\u7279\u522b\u662f\u9047\u5230\u7f51\u7edc\u73af\u5883\u4e0d\u597d\u65f6\uff0c\u6570\u636e\u5305\u8d85\u65f6\u786e\u8ba4\u6216\u4e22\u5931\u662f\u5e38\u6709\u7684\u4e8b\uff0c\u5047\u5982\u67d0\u4e2a\u6570\u636e\u5305\u4e22\u5931\u9700\u8981\u91cd\u4f20\u65f6\u4f1a\u53d1\u751f\u4ec0\u4e48\u5462\uff1f<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/www.ccwifi.cc\/blogs\/wp-content\/uploads\/2024\/03\/1711225714532_1.png\" alt=\"\u4fdd\u5b58\u63e1\u624b\u5305\"><\/p>\n<p>TCP \u91c7\u7528\u6b63\u9762\u786e\u8ba4\u548c\u8d85\u65f6\u91cd\u4f20\u673a\u5236\u6765\u4fdd\u8bc1\u6570\u636e\u5305\u7684\u53ef\u9760\u4ea4\u4ed8\u3002\u6bd4\u5982\u4e3b\u673aA \u5411 \u4e3b\u673aB \u53d1\u9001\u6570\u636e\u5305\uff0c\u4e3b\u673aB \u6536\u5230\u8be5\u6570\u636e\u5305\u540e\u4f1a\u5411\u4e3b\u673aA \u8fd4\u56de\u786e\u8ba4\u5e94\u7b54\u62a5\u6587\uff0c\u8868\u793a\u81ea\u5df1\u786e\u5b9e\u6536\u5230\u4e86\u8be5\u6570\u636e\u5305\uff0c\u4e3b\u673aA \u6536\u5230\u786e\u8ba4\u5e94\u7b54\u62a5\u6587\u540e\u624d\u786e\u5b9a\u4e0a\u4e00\u4e2a\u6570\u636e\u5305\u5df2\u7ecf\u53d1\u9001\u6210\u529f\uff0c\u5f00\u59cb\u53d1\u9001\u4e0b\u4e00\u4e2a\u6570\u636e\u5305\u3002\u5982\u679c\u8d85\u8fc7\u4e00\u5b9a\u65f6\u95f4\uff08\u6839\u636e\u6bcf\u6b21\u6d4b\u91cf\u7684\u5f80\u8fd4\u65f6\u95f4RTT\u4f30\u7b97\u51fa\u7684\u52a8\u6001\u9608\u503c\uff09\u672a\u6536\u5230\u786e\u8ba4\u5e94\u7b54\uff0c\u5219\u4e3b\u673aA \u5224\u65ad\u4e0a\u4e00\u4e2a\u6570\u636e\u5305\u4e22\u5931\u4e86\uff0c\u91cd\u65b0\u53d1\u9001\u4e0a\u4e00\u4e2a\u6570\u636e\u5305\uff0c\u8fd9\u5c31\u76f8\u5f53\u4e8e\u963b\u585e\u4e86\u4e0b\u4e00\u4e2a\u6570\u636e\u5305\u7684\u53d1\u9001\u3002<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/www.ccwifi.cc\/blogs\/wp-content\/uploads\/2024\/03\/1711225714532_2.png\" alt=\"\u4fdd\u5b58\u63e1\u624b\u5305\"><\/p>\n<p>\u9010\u4e2a\u53d1\u9001\u6570\u636e\u5305\uff0c\u7b49\u5f85\u786e\u8ba4\u5e94\u7b54\u5230\u6765\u540e\u518d\u53d1\u9001\u4e0b\u4e00\u4e2a\u6570\u636e\u5305\uff0c\u6548\u7387\u592a\u4f4e\u4e86\uff0cTCP 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decoding=\"async\" src=\"http:\/\/www.ccwifi.cc\/blogs\/wp-content\/uploads\/2024\/03\/1711225714532_3.png\" alt=\"\u4fdd\u5b58\u63e1\u624b\u5305\"><\/p>\n<p>TCP \u56e0\u4e3a\u8d85\u65f6\u786e\u8ba4\u6216\u4e22\u5305\u5f15\u8d77\u7684\u6ed1\u52a8\u7a97\u53e3\u963b\u585e\u95ee\u9898\uff0c\u662f\u4e0d\u662f\u6709\u70b9\u50cfHTTP\/1.1 \u7ba1\u9053\u5316\u673a\u5236\u4e2d\u51fa\u73b0\u7684\u961f\u5934\u963b\u585e\u95ee\u9898\uff1fHTTP\/2 \u5728\u5e94\u7528\u534f\u8bae\u5c42\u901a\u8fc7\u591a\u8def\u590d\u7528\u89e3\u51b3\u4e86\u961f\u5934\u963b\u585e\u95ee\u9898\uff0c\u4f46TCP \u5728\u4f20\u8f93\u5c42\u4f9d\u7136\u5b58\u5728\u961f\u5934\u963b\u585e\u95ee\u9898\uff0c\u8fd9\u662fTCP \u534f\u8bae\u7684\u4e00\u4e2a\u4e3b\u8981\u6027\u80fd\u74f6\u9888\u3002\u8be5\u600e\u4e48\u89e3\u51b3TCP \u7684\u961f\u5934\u963b\u585e\u95ee\u9898\u5462\uff1f 1.2 QUIC \u5982\u4f55\u89e3\u51b3\u961f\u5934\u963b\u585e\u95ee\u9898\uff1f TCP \u961f\u5934\u963b\u585e\u7684\u4e3b\u8981\u539f\u56e0\u662f\u6570\u636e\u5305\u8d85\u65f6\u786e\u8ba4\u6216\u4e22\u5931\u963b\u585e\u4e86\u5f53\u524d\u7a97\u53e3\u5411\u53f3\u6ed1\u52a8\uff0c\u6211\u4eec\u6700\u5bb9\u6613\u60f3\u5230\u7684\u89e3\u51b3\u961f\u5934\u963b\u585e\u7684\u65b9\u6848\u662f\u4e0d\u8ba9\u8d85\u65f6\u786e\u8ba4\u6216\u4e22\u5931\u7684\u6570\u636e\u5305\u5c06\u5f53\u524d\u7a97\u53e3\u963b\u585e\u5728\u539f\u5730\u3002QUIC (Quick UDP Internet Connections)\u4e5f\u6b63\u662f\u91c7\u7528\u4e0a\u8ff0\u65b9\u6848\u6765\u89e3\u51b3TCP \u961f\u5934\u963b\u585e\u95ee\u9898\u7684\u3002 TCP \u4e3a\u4e86\u4fdd\u8bc1\u53ef\u9760\u6027\uff0c\u4f7f\u7528\u4e86\u57fa\u4e8e\u5b57\u8282\u5e8f\u53f7\u7684 Sequence Number \u53ca Ack \u6765\u786e\u8ba4\u6d88\u606f\u7684\u6709\u5e8f\u5230\u8fbe\u3002QUIC \u540c\u6837\u662f\u4e00\u4e2a\u53ef\u9760\u7684\u534f\u8bae\uff0c\u5b83\u4f7f\u7528 Packet Number \u4ee3\u66ff\u4e86 TCP \u7684 Sequence Number\uff0c\u5e76\u4e14\u6bcf\u4e2a Packet Number \u90fd\u4e25\u683c\u9012\u589e\uff0c\u4e5f\u5c31\u662f\u8bf4\u5c31\u7b97 Packet N \u4e22\u5931\u4e86\uff0c\u91cd\u4f20\u7684 Packet N \u7684 Packet Number \u5df2\u7ecf\u4e0d\u662f N\uff0c\u800c\u662f\u4e00\u4e2a\u6bd4 N \u5927\u7684\u503c\uff0c\u6bd4\u5982Packet N+M\u3002<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/www.ccwifi.cc\/blogs\/wp-content\/uploads\/2024\/03\/1711225714532_4.png\" alt=\"\u4fdd\u5b58\u63e1\u624b\u5305\"><\/p>\n<p>QUIC \u4f7f\u7528\u7684Packet Number \u5355\u8c03\u9012\u589e\u7684\u8bbe\u8ba1\uff0c\u53ef\u4ee5\u8ba9\u6570\u636e\u5305\u4e0d\u518d\u50cfTCP \u90a3\u6837\u5fc5\u987b\u6709\u5e8f\u786e\u8ba4\uff0cQUIC \u652f\u6301\u4e71\u5e8f\u786e\u8ba4\uff0c\u5f53\u6570\u636e\u5305Packet N \u4e22\u5931\u540e\uff0c\u53ea\u8981\u6709\u65b0\u7684\u5df2\u63a5\u6536\u6570\u636e\u5305\u786e\u8ba4\uff0c\u5f53\u524d\u7a97\u53e3\u5c31\u4f1a\u7ee7\u7eed\u5411\u53f3\u6ed1\u52a8\u3002\u5f85\u53d1\u9001\u7aef\u83b7\u77e5\u6570\u636e\u5305Packet N \u4e22\u5931\u540e\uff0c\u4f1a\u5c06\u9700\u8981\u91cd\u4f20\u7684\u6570\u636e\u5305\u653e\u5230\u5f85\u53d1\u9001\u961f\u5217\uff0c\u91cd\u65b0\u7f16\u53f7\u6bd4\u5982\u6570\u636e\u5305Packet N+M \u540e\u91cd\u65b0\u53d1\u9001\u7ed9\u63a5\u6536\u7aef\uff0c\u5bf9\u91cd\u4f20\u6570\u636e\u5305\u7684\u5904\u7406\u8ddf\u53d1\u9001\u65b0\u7684\u6570\u636e\u5305\u7c7b\u4f3c\uff0c\u8fd9\u6837\u5c31\u4e0d\u4f1a\u56e0\u4e3a\u4e22\u5305\u91cd\u4f20\u5c06\u5f53\u524d\u7a97\u53e3\u963b\u585e\u5728\u539f\u5730\uff0c\u4ece\u800c\u89e3\u51b3\u4e86\u961f\u5934\u963b\u585e\u95ee\u9898\u3002\u90a3\u4e48\uff0c\u65e2\u7136\u91cd\u4f20\u6570\u636e\u5305\u7684Packet N+M \u4e0e\u4e22\u5931\u6570\u636e\u5305\u7684Packet N \u7f16\u53f7\u5e76\u4e0d\u4e00\u81f4\uff0c\u6211\u4eec\u600e\u4e48\u786e\u5b9a\u8fd9\u4e24\u4e2a\u6570\u636e\u5305\u7684\u5185\u5bb9\u4e00\u6837\u5462\uff1f \u8fd8\u8bb0\u5f97\u524d\u7bc7\u535a\u6587\uff1aHTTP\/2 \u662f\u5982\u4f55\u89e3\u51b3HTTP\/1.1 \u6027\u80fd\u74f6\u9888\u7684\uff1f\u4f7f\u7528Stream ID \u6765\u6807\u8bc6\u5f53\u524d\u6570\u636e\u6d41\u5c5e\u4e8e\u54ea\u4e2a\u8d44\u6e90\u8bf7\u6c42\uff0c\u8fd9\u540c\u65f6\u4e5f\u662f\u6570\u636e\u5305\u591a\u8def\u590d\u7528\u4f20\u8f93\u5230\u63a5\u6536\u7aef\u540e\u80fd\u6b63\u5e38\u7ec4\u88c5\u7684\u4f9d\u636e\u3002\u91cd\u4f20\u7684\u6570\u636e\u5305Packet N+M \u548c\u4e22\u5931\u7684\u6570\u636e\u5305Packet N \u5355\u9760Stream ID \u7684\u6bd4\u5bf9\u4e00\u81f4\u4ecd\u7136\u4e0d\u80fd\u5224\u65ad\u4e24\u4e2a\u6570\u636e\u5305\u5185\u5bb9\u4e00\u81f4\uff0c\u8fd8\u9700\u8981\u518d\u65b0\u589e\u4e00\u4e2a\u5b57\u6bb5Stream Offset\uff0c\u6807\u8bc6\u5f53\u524d\u6570\u636e\u5305\u5728\u5f53\u524dStream ID \u4e2d\u7684\u5b57\u8282\u504f\u79fb\u91cf\u3002<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/www.ccwifi.cc\/blogs\/wp-content\/uploads\/2024\/03\/1711225714532_5.png\" alt=\"\u4fdd\u5b58\u63e1\u624b\u5305\"><\/p>\n<p>\u4e0a\u56fe\u4e2d\u6570\u636e\u5305Packet N \u4e22\u5931\u4e86\uff0c\u540e\u9762\u91cd\u4f20\u8be5\u6570\u636e\u5305\u7684\u7f16\u53f7\u4e3aPacket N+2\uff0c\u4e22\u5931\u7684\u6570\u636e\u5305\u548c\u91cd\u4f20\u7684\u6570\u636e\u5305Stream ID \u4e0e Offset \u90fd\u4e00\u81f4\uff0c\u8bf4\u660e\u8fd9\u4e24\u4e2a\u6570\u636e\u5305\u7684\u5185\u5bb9\u4e00\u81f4\u3002\u8fd9\u4e9b\u6570\u636e\u5305\u4f20\u8f93\u5230\u63a5\u6536\u7aef\u540e\uff0c\u63a5\u6536\u7aef\u80fd\u6839\u636eStream ID \u4e0e Offset \u5b57\u6bb5\u4fe1\u606f\u6b63\u786e\u7ec4\u88c5\u6210\u5b8c\u6574\u7684\u8d44\u6e90\u3002 QUIC \u901a\u8fc7\u5355\u5411\u9012\u589e\u7684Packet Number\uff0c\u914d\u5408Stream ID \u4e0e Offset \u5b57\u6bb5\u4fe1\u606f\uff0c\u53ef\u4ee5\u652f\u6301\u975e\u8fde\u7eed\u786e\u8ba4\u5e94\u7b54Ack\u800c\u4e0d\u5f71\u54cd\u6570\u636e\u5305\u7684\u6b63\u786e\u7ec4\u88c5\uff0c\u6446\u8131\u4e86TCP \u5fc5\u987b\u6309\u987a\u5e8f\u786e\u8ba4\u5e94\u7b54Ack \u7684\u9650\u5236\uff08\u4e5f\u5373\u4e0d\u80fd\u51fa\u73b0\u975e\u8fde\u7eed\u7684\u7a7a\u4f4d\uff09\uff0c\u89e3\u51b3\u4e86TCP \u56e0\u67d0\u4e2a\u6570\u636e\u5305\u91cd\u4f20\u800c\u963b\u585e\u540e\u7eed\u6240\u6709\u5f85\u53d1\u9001\u6570\u636e\u5305\u7684\u95ee\u9898\uff08\u4e5f\u5373\u961f\u5934\u963b\u585e\u95ee\u9898\uff09\u3002 QUIC \u53ef\u4ee5\u652f\u6301\u975e\u8fde\u7eed\u7684\u6570\u636e\u5305\u786e\u8ba4\u5e94\u7b54Ack\uff0c\u81ea\u7136\u4e5f\u5c31\u8981\u6c42\u6bcf\u4e2a\u6570\u636e\u5305\u7684\u786e\u8ba4\u5e94\u7b54Ack \u90fd\u80fd\u8fd4\u56de\u7ed9\u53d1\u9001\u7aef\uff08TCP \u4e2d\u95f4\u4e22\u5931\u51e0\u4e2aAck \u5bf9\u6570\u636e\u5305\u7684\u786e\u8ba4\u5e94\u7b54\u5f71\u54cd\u4e0d\u5927\uff09\uff0c\u53d1\u9001\u7aef\u6536\u5230\u8be5\u6570\u636e\u5305\u7684\u786e\u8ba4\u5e94\u7b54\u540e\u624d\u4f1a\u91ca\u653e\u8be5\u6570\u636e\u5305\u6240\u5360\u7528\u7684\u7f13\u5b58\u8d44\u6e90\uff0c\u5df2\u53d1\u9001\u4f46\u672a\u6536\u5230\u786e\u8ba4\u5e94\u7b54\u7684\u6570\u636e\u5305\u4f1a\u4fdd\u5b58\u5728\u7f13\u5b58\u94fe\u8868\u4e2d\u7b49\u5f85\u53ef\u80fd\u7684\u91cd\u4f20\u3002QUIC \u5bf9\u786e\u8ba4\u5e94\u7b54Ack \u4e22\u5931\u7684\u5bb9\u5fcd\u5ea6\u6bd4\u8f83\u4f4e\uff0c\u81ea\u7136\u5bf9Ack \u7684\u4f20\u8f93\u80fd\u529b\u8fdb\u884c\u4e86\u589e\u5f3a\uff0cQuic Ack Frame \u53ef\u4ee5\u540c\u65f6\u63d0\u4f9b 256 \u4e2a Ack Block\uff0c\u5728\u4e22\u5305\u7387\u6bd4\u8f83\u9ad8\u7684\u7f51\u7edc\u4e0b\uff0c\u66f4\u591a\u7684 Ack Block \u53ef\u4ee5\u63d0\u9ad8Ack \u9001\u8fbe\u7684\u6210\u529f\u7387\uff0c\u51cf\u5c11\u91cd\u4f20\u91cf\u3002 1.3 QUIC \u6ca1\u6709\u961f\u5934\u963b\u585e\u7684\u591a\u8def\u590d\u7528 QUIC \u89e3\u51b3\u4e86TCP \u7684\u961f\u5934\u963b\u585e\u95ee\u9898\uff0c\u540c\u65f6\u7ee7\u627f\u4e86HTTP\/2 \u7684\u591a\u8def\u590d\u7528\u4f18\u70b9\uff0c\u56e0\u4e3aStream Offset \u5b57\u6bb5\u7684\u5f15\u5165\uff0cQUIC \u4e2d\u540c\u4e00Stream ID \u7684\u6570\u636e\u5e27\u4e5f\u652f\u6301\u4e71\u5e8f\u4f20\u8f93\uff0c\u4e0d\u518d\u50cfHTTP\/2 \u8981\u6c42\u7684\u540c\u4e00Stream ID \u7684\u6570\u636e\u5e27\u5fc5\u987b\u6709\u5e8f\u4f20\u8f93\u90a3\u4e48\u4e25\u683c\u3002<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/www.ccwifi.cc\/blogs\/wp-content\/uploads\/2024\/03\/1711225714532_6.png\" alt=\"\u4fdd\u5b58\u63e1\u624b\u5305\"><\/p>\n<p>\u4ece\u4e0a\u9762QUIC \u7684\u6570\u636e\u5305\u7ed3\u6784\u4e2d\u53ef\u4ee5\u770b\u51fa\uff0c\u540c\u4e00\u4e2aConnection ID \u53ef\u4ee5\u540c\u65f6\u4f20\u8f93\u591a\u4e2aStream ID\uff0c\u7531\u4e8eQUIC \u652f\u6301\u975e\u8fde\u7eed\u7684Packet Number \u786e\u8ba4\uff0c\u67d0\u4e2aPacket N \u8d85\u65f6\u786e\u8ba4\u6216\u4e22\u5931\uff0c\u4e0d\u4f1a\u5f71\u54cd\u5176\u5b83\u672a\u5305\u542b\u5728\u8be5\u6570\u636e\u5305\u4e2d\u7684Stream Frame \u7684\u6b63\u5e38\u4f20\u8f93\u3002\u540c\u4e00\u4e2aPacket Number \u53ef\u627f\u8f7d\u591a\u4e2aStream Frame\uff0c\u82e5\u8be5\u6570\u636e\u5305\u4e22\u5931\uff0c\u5219\u5176\u627f\u8f7d\u7684Stream Frame \u90fd\u9700\u8981\u91cd\u65b0\u4f20\u8f93\u3002\u56e0\u4e3a\u540c\u4e00Stream ID \u7684\u6570\u636e\u5e27\u4e71\u5e8f\u4f20\u8f93\u540e\u4e5f\u80fd\u6b63\u786e\u7ec4\u88c5\uff0c\u8fd9\u4e9b\u9700\u8981\u91cd\u4f20\u7684Stream Frame \u5e76\u4e0d\u4f1a\u5f71\u54cd\u5176\u5b83\u5f85\u53d1\u9001Stream Frame \u7684\u6b63\u5e38\u4f20\u8f93\u3002 \u503c\u5f97\u4e00\u63d0\u7684\u662f\uff0cTLS \u534f\u8bae\u52a0\u89e3\u5bc6\u524d\u9700\u8981\u5bf9\u6570\u636e\u8fdb\u884c\u5b8c\u6574\u6027\u6821\u9a8c\uff0cHTTP\/2 \u4e2d\u5982\u679cTCP \u51fa\u73b0\u4e22\u5305\uff0cTLS \u4e5f\u4f1a\u56e0\u63a5\u6536\u5230\u7684\u6570\u636e\u4e0d\u5b8c\u6574\u800c\u65e0\u6cd5\u5bf9\u5176\u8fdb\u884c\u5904\u7406\uff0c\u4e5f\u5373HTTP\/2 \u4e2d\u7684TLS \u534f\u8bae\u5c42\u4e5f\u5b58\u5728\u961f\u5934\u963b\u585e\u95ee\u9898\uff0c\u8be5\u95ee\u9898\u5982\u4f55\u89e3\u51b3\u5462\uff1f\u65e2\u7136TLS \u534f\u8bae\u662f\u56e0\u4e3a\u63a5\u6536\u6570\u636e\u4e0d\u5b8c\u6574\u5f15\u8d77\u7684\u963b\u585e\uff0c\u6211\u4eec\u53ea\u9700\u8981\u8ba9TLS \u52a0\u5bc6\u8ba4\u8bc1\u8fc7\u7a0b\u57fa\u4e8e\u4e00\u4e2a\u72ec\u7acb\u7684Packet\uff0c\u4e0d\u5bf9\u591a\u4e2aPacket \u540c\u65f6\u8fdb\u884c\u52a0\u5bc6\u8ba4\u8bc1\uff0c\u5c31\u80fd\u89e3\u51b3TLS \u534f\u8bae\u5c42\u51fa\u73b0\u7684\u961f\u5934\u963b\u585e\u95ee\u9898\uff0c\u67d0\u4e00\u4e2aPacket \u4e22\u5931\u53ea\u4f1a\u5f71\u54cd\u5c01\u88c5\u8be5Packet \u7684Record\uff0c\u4e0d\u4f1a\u8ba9\u5176\u5b83Record \u9677\u5165\u963b\u585e\u7b49\u5f85\u7684\u60c5\u51b5\u3002 2.1 TCP\u8fde\u63a5\u7684\u672c\u8d28\u662f\u4ec0\u4e48\uff1f \u4f60\u53ef\u80fd\u719f\u6089TCP \u5efa\u7acb\u8fde\u63a5\u7684\u4e09\u6b21\u63e1\u624b\u548c\u56db\u6b21\u6325\u624b\u8fc7\u7a0b\uff0c\u4f46\u4f60\u77e5\u9053TCP \u5efa\u7acb\u7684\u8fde\u63a5\u672c\u8d28\u4e0a\u662f\u4ec0\u4e48\u5417\uff1f\u8fd9\u91cc\u7684\u8fde\u63a5\u8ddf\u6211\u4eec\u719f\u6089\u7684\u7269\u7406\u4ecb\u8d28\u8fde\u63a5\uff08\u6bd4\u5982\u7535\u8def\u8fde\u63a5\uff09\u4e0d\u540c\uff0c\u4e3b\u8981\u662f\u7528\u6765\u8bf4\u660e\u5982\u4f55\u5728\u7269\u7406\u4ecb\u8d28\u4e0a\u4f20\u8f93\u6570\u636e\u7684\u3002 \u4e3a\u4e86\u66f4\u76f4\u89c2\u4e86\u89e3\u7f51\u7edc\u8fde\u63a5\u6982\u5ff5\uff0c\u6211\u4eec\u62ff\u9762\u5411\u8fde\u63a5\u7684TCP \u4e0e\u65e0\u8fde\u63a5\u7684UDP \u505a\u5bf9\u6bd4\uff0c\u7f51\u7edc\u4f20\u8f93\u5c42\u7684\u4e24\u4e2a\u4e3b\u6d41\u534f\u8bae\uff0c\u4ed6\u4eec\u7684\u4e3b\u8981\u533a\u522b\u662f\u4ec0\u4e48\u5462\uff1fUDP \u6bcf\u4e2a\u5206\u7ec4\u7684\u5904\u7406\u90fd\u72ec\u7acb\u4e8e\u6240\u6709\u5176\u4ed6\u5206\u7ec4\uff0cTCP \u6bcf\u4e2a\u5206\u7ec4\u7684\u4f20\u8f93\u90fd\u6709\u786e\u8ba4\u5e94\u7b54\u8fc7\u7a0b\u548c\u53ef\u80fd\u7684\u4e22\u5305\u91cd\u4f20\u8fc7\u7a0b\uff0c\u9700\u8981\u4e3a\u6bcf\u4e2a\u5206\u7ec4\u6570\u636e\u8fdb\u884c\u72b6\u6001\u4fe1\u606f\u8bb0\u5f55\u548c\u7ba1\u7406\uff08\u6bd4\u5982\u672a\u53d1\u9001\u3001\u5df2\u53d1\u9001\u3001\u672a\u786e\u8ba4\u3001\u5df2\u786e\u8ba4\u7b49\u72b6\u6001\uff09\u3002 TCP \u5efa\u7acb\u8fde\u63a5\u7684\u4e09\u6b21\u63e1\u624b\u8fc7\u7a0b\u90fd\u505a\u4e86\u54ea\u4e9b\u5de5\u4f5c\u5462\uff1f\u9996\u5148\u786e\u8ba4\u53cc\u65b9\u662f\u5426\u80fd\u6b63\u5e38\u6536\u53d1\u6570\u636e\uff0c\u901a\u4fe1\u53cc\u65b9\u4ea4\u6362\u5f85\u53d1\u9001\u6570\u636e\u7684\u521d\u59cb\u5e8f\u5217\u7f16\u53f7\u5e76\u4f5c\u4e3a\u6709\u5e8f\u786e\u8ba4\u5e94\u7b54\u7684\u57fa\u70b9\uff0c\u901a\u4fe1\u53cc\u65b9\u6839\u636e\u9884\u8bbe\u7684\u72b6\u6001\u8f6c\u6362\u56fe\u5b8c\u6210\u5404\u81ea\u7684\u72b6\u6001\u8fc1\u79fb\u8fc7\u7a0b\uff0c\u901a\u4fe1\u53cc\u65b9\u4e3a\u5206\u7ec4\u6570\u636e\u7684\u53ef\u9760\u4f20\u8f93\u548c\u72b6\u6001\u4fe1\u606f\u7684\u8bb0\u5f55\u7ba1\u7406\u5206\u914d\u63a7\u5236\u5757\u7f13\u5b58\u8d44\u6e90\u7b49\u3002\u4e0b\u9762\u7ed9\u51faTCP \u8fde\u63a5\u5efa\u7acb\u3001\u6570\u636e\u4f20\u8f93\u3001\u8fde\u63a5\u91ca\u653e\u4e09\u4e2a\u9636\u6bb5\u7684\u62a5\u6587\u4ea4\u4e92\u8fc7\u7a0b\u548c\u72b6\u6001\u8fc1\u79fb\u56fe\u793a\uff08\u8be6\u89c1\u535a\u6587\uff1aTCP\u534f\u8bae\u4e0eTransmission Control Protocol\uff09\uff1a<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/www.ccwifi.cc\/blogs\/wp-content\/uploads\/2024\/03\/1711225714532_7.png\" alt=\"\u4fdd\u5b58\u63e1\u624b\u5305\"><\/p>\n<p>\u4ece\u4e0a\u56fe\u53ef\u4ee5\u770b\u51fa\uff0cTCP \u8fde\u63a5\u4e3b\u8981\u662f\u53cc\u65b9\u8bb0\u5f55\u5e76\u540c\u6b65\u7ef4\u62a4\u7684\u72b6\u6001\u7ec4\u6210\u7684\u3002\u4e00\u822c\u6765\u8bf4\uff0c\u5efa\u7acb\u8fde\u63a5\u662f\u4e3a\u4e86\u7ef4\u62a4\u524d\u540e\u5206\u7ec4\u6570\u636e\u7684\u627f\u7ee7\u5173\u7cfb\uff0c\u7ef4\u62a4\u524d\u540e\u627f\u7ee7\u5173\u7cfb\u6700\u5e38\u7528\u7684\u65b9\u6cd5\u5c31\u662f\u5bf9\u5176\u8fdb\u884c\u72b6\u6001\u8bb0\u5f55\u548c\u7ba1\u7406\u3002 TCP 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alt=\"\u4fdd\u5b58\u63e1\u624b\u5305\"><\/p>\n<p>2.2 QUIC \u5982\u4f55\u51cf\u5c11TCP \u5efa\u7acb\u8fde\u63a5\u7684\u5f00\u9500\uff1f TCP \u5efa\u7acb\u8fde\u63a5\u9700\u8981\u4e09\u6b21\u63e1\u624b\u8fc7\u7a0b\uff0c\u7b2c\u4e09\u6b21\u63e1\u624b\u62a5\u6587\u53d1\u51fa\u540e\u4e0d\u9700\u8981\u7b49\u5f85\u5e94\u7b54\u56de\u590d\u5c31\u53ef\u4ee5\u53d1\u9001\u6570\u636e\u62a5\u6587\u4e86\uff0c\u6240\u4ee5TCP \u5efa\u7acb\u8fde\u63a5\u7684\u5f00\u9500\u4e3a 1-RTT\u3002\u65e2\u7136TCP \u8fde\u63a5\u4e3b\u8981\u662f\u7531\u53cc\u65b9\u8bb0\u5f55\u5e76\u540c\u6b65\u7ef4\u62a4\u7684\u72b6\u6001\u7ec4\u6210\u7684\uff0c\u6211\u4eec\u80fd\u5426\u501f\u9274TLS \u5feb\u901f\u6062\u590d\u7b80\u77ed\u63e1\u624b\u76f8\u6bd4\u5b8c\u6574\u63e1\u624b\u7684\u4f18\u5316\u65b9\u6848\u5462\uff1f TLS \u7b80\u77ed\u63e1\u624b\u8fc7\u7a0b\u662f\u5c06\u4e4b\u524d\u5b8c\u6574\u63e1\u624b\u8fc7\u7a0b\u534f\u5546\u7684\u4fe1\u606f\u8bb0\u5f55\u4e0b\u6765\uff0c\u4ee5Session Ticket 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