{"id":29439,"date":"2023-05-12T10:41:45","date_gmt":"2023-05-12T02:41:45","guid":{"rendered":"https:\/\/docs.pingcode.com\/?p=29439"},"modified":"2023-05-12T10:41:45","modified_gmt":"2023-05-12T02:41:45","slug":"%e9%92%88%e5%af%b9-quic%e5%8d%8f%e8%ae%ae%e7%9a%84%e5%ae%a2%e6%88%b7%e7%ab%af%e8%af%b7%e6%b1%82%e4%bc%aa%e9%80%a0%e6%94%bb%e5%87%bb","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/info\/29439.html","title":{"rendered":"\u9488\u5bf9 QUIC\u534f\u8bae\u7684\u5ba2\u6237\u7aef\u8bf7\u6c42\u4f2a\u9020\u653b\u51fb"},"content":{"rendered":"

QUIC\uff08Quick UDP Internet Connection\uff09\u662f\u8c37\u6b4c\u5236\u5b9a\u7684\u4e00\u79cd\u57fa\u4e8eUDP\u7684\u4f4e\u65f6\u5ef6\u7684\u4e92\u8054\u7f51\u4f20\u8f93\u5c42\u534f\u8bae\u3002\u968f\u7740\u6700\u8fd1\u7684\u6807\u51c6\u5316\u548c\u5404\u5927\u578b\u79d1\u6280\u516c\u53f8\u7684\u5174\u8da3\u65e5\u76ca\u6d53\u539a\uff0cQUIC \u534f\u8bae\u83b7\u5f97\u8d8a\u6765\u8d8a\u591a\u7684\u5173\u6ce8\u3002 \u672c\u7814\u7a76\u5bf9\u4eceQUIC\u8bbe\u8ba1\u4e2d\u4ea7\u751f\u7684\u5ba2\u6237\u7aef\u8bf7\u6c42\u4f2a\u9020\u653b\u51fb\u8fdb\u884c\u4e86\u521d\u6b65\u5206\u6790\u3002\u76ee\u524d\u76f8\u5173\u811a\u672c\u5df2\u5f00\u6e90\uff1ahttps:\/\/github.com\/yurigbur\/QUICforge<\/a><\/p>\n

\u672c\u7814\u7a76\u5206\u6790\u4e86\u4e09\u79cd\u8bf7\u6c42\u4f2a\u9020\u653b\u51fb\u6a21\u5f0f\uff0c\u5e76\u4e86\u89e3\u5b83\u4eec\u5982\u4f55\u7528\u4e8e\u534f\u8bae\u5047\u5192\u653b\u51fb\u548c\u6d41\u91cf\u653e\u5927\u653b\u51fb\u3002\u7136\u540e\uff0c\u63a2\u7d22\u4e86\u5404\u4e2a\u534f\u8bae\u6d88\u606f\u7684\u53ef\u63a7\u653b\u51fb\u7a7a\u95f4\uff0c\u5e76\u8bc1\u660e\u5176\u4e2d\u4e00\u79cd\u653b\u51fb\u6a21\u5f0f\u53ef\u4ee5\u7528\u6765\u5047\u5192\u5176\u5b83\u57fa\u4e8e UDP \u7684\u534f\u8bae\uff0c\u4f8b\u5982 DNS \u8bf7\u6c42\u3002\u5c3d\u7ba1 QUIC \u534f\u8bae\u89c4\u8303\u89c4\u5b9a\u4e86\u53cd\u653e\u5927\u7684\u9650\u5236\uff0c\u4f46\u5bf9 13 \u4e2a QUIC \u5f00\u6e90\u5b9e\u73b0\u7684\u8bc4\u4f30\u8868\u660e\uff0c\u67d0\u4e9b\u60c5\u51b5\u4e0b\u8fd9\u4e9b\u7f13\u89e3\u63aa\u65bd\u7f3a\u5931\u6216\u5b9e\u65bd\u4e0d\u5145\u5206\u3002 \u6700\u540e\uff0c\u672c\u7814\u7a76\u63d0\u51fa\u4e86\u7f13\u89e3\u534f\u8bae\u5047\u5192\u7684\u65b9\u6cd5\u5e76\u8ba8\u8bba\u4e86 QUIC \u89c4\u8303\u4e2d\u7684\u95ee\u9898\u3002<\/p>\n

0x01 \u7b80\u4ecb<\/h2>\n

QUIC\u534f\u8bae\u662f\u4f20\u8f93\u5c42\u6d41\u62bd\u8c61\u7684\u521b\u65b0\u53d1\u5c55\u3002\u5b83\u7ed3\u5408\u4e86 TCP \u548c TLS 1.3 \u7684\u529f\u80fd\uff0c\u4ee5\u51cf\u5c11\u8fde\u63a5\u8bbe\u7f6e\u671f\u95f4\u6240\u9700\u7684\u5f80\u8fd4\u65f6\u95f4 (RTT)\u3002 \u5b83\u53ef\u4ee5\u4e3a\u5df2\u77e5\u7aef\u70b9\u5b9e\u73b0\u771f\u6b63\u7684 0-RTT \u8fde\u63a5\u8bbe\u7f6e\uff0c\u4ece\u800c\u63d0\u9ad8\u9ad8\u5ef6\u8fdf\u7f51\u7edc\u7684\u6027\u80fd\u3002 \u5728\u82f9\u679c\u3001Cloudflare\u3001Facebook\u3001\u8c37\u6b4c\u548c Mozilla \u7b49\u8bb8\u591a\u77e5\u540d\u516c\u53f8\u7684\u652f\u6301\u4e0b\uff0cQUIC \u83b7\u5f97\u4e86\u66f4\u591a\u7684\u5173\u6ce8\u3002 \u5982\u4eca QUIC \u975e\u5e38\u91cd\u8981\uff0c\u56e0\u4e3a\u5b83\u88ab\u9009\u62e9\u4f5c\u4e3a\u65b0 HTTP\/3 \u6807\u51c6\u7684\u6838\u5fc3\u534f\u8bae\u3002QUIC \u7684\u5e7f\u6cdb\u91c7\u7528\u5bfc\u81f4\u4e86 Web \u534f\u8bae\u6808\u53d8\u5316\uff0c\u5e76\u50ac\u751f\u4e86\u5404\u79cd\u65b0\u5f00\u6e90\u5b9e\u73b0\u7684\u5f00\u53d1\u3002<\/p>\n

\u4e3a\u4e86\u5b9e\u73b0\u4e0e\u4e92\u8054\u7f51\u534f\u8bae\u6808\u7684\u517c\u5bb9\uff0cQUIC \u5efa\u7acb\u5728 UDP \u4e4b\u4e0a\u3002 \u5728\u63d0\u4f9b\u4f20\u8f93\u5c42\u529f\u80fd\u7684\u540c\u65f6\uff0cQUIC \u5728\u6280\u672f\u4e0a\u662f\u4e00\u79cd\u5e94\u7528\u5c42\u534f\u8bae\uff0c\u5177\u6709\u81ea\u5df1\u7684\u5bfb\u5740\u65b9\u6848\u3002 QUIC \u7684\u5bfb\u5740\u5141\u8bb8\u5e95\u5c42 UDP \u7aef\u53e3\u548c IP \u5730\u5740\u53d1\u751f\u53d8\u5316\uff0c\u540c\u65f6\u4fdd\u6301\u8fde\u63a5\u3002 QUIC \u534f\u8bae\u5904\u7406\u7aef\u70b9\u7684\u8fc1\u79fb\u3002 \u4e3a\u6b64\uff0c\u670d\u52a1\u5668\u5fc5\u987b\u5c06 UDP \u6570\u636e\u62a5\u53d1\u9001\u5230\u672a\u77e5\u7aef\u70b9\u3002 \u63e1\u624b\u4e5f\u662f\u5982\u6b64\uff0c\u5176\u4e2d\u7b2c\u4e00\u6761\u6d88\u606f\u59cb\u7ec8\u6307\u5411\u672a\u9a8c\u8bc1\u7684\u7aef\u70b9\u3002<\/p>\n

\u7efc\u4e0a\u6240\u8ff0\uff0cQUIC \u4f3c\u4e4e\u7279\u522b\u5bb9\u6613\u53d7\u5230\u5730\u5740\u6b3a\u9a97\u548c\u8bf7\u6c42\u4f2a\u9020\u7684\u653b\u51fb\u3002 QUIC \u89c4\u8303\u627f\u8ba4\u6f0f\u6d1e\u5e76\u63d0\u4f9b\u9996\u8981\u5b89\u5168\u8003\u8651\u3002 \u867d\u7136\u5176\u91cd\u8981\u6027\u662f\u4e0d\u53ef\u5426\u8ba4\u7684\uff0c\u4f46\u5bf9 QUIC \u4e2d\u7684\u653b\u51fb\u7814\u7a76\u4ecd\u5904\u4e8e\u8d77\u6b65\u9636\u6bb5\u3002 \u7279\u522b\u662f\u591a\u79cd\u65b0\u5b9e\u73b0\u4ee5\u53ca\u65b0\u534f\u8bae\u8bbe\u8ba1\u9700\u8981\u66f4\u6df1\u5165\u7684\u5b89\u5168\u5206\u6790\u3002<\/p>\n

\u672c\u6587\u8be6\u7ec6\u7814\u7a76\u4e86 QUIC \u4e2d\u7684\u5ba2\u6237\u7aef\u8bf7\u6c42\u4f2a\u9020\uff0c\u5e76\u63d0\u4f9b\u4e86\u9996\u4e2a\u53ef\u884c\u6027\u5206\u6790\u3002 \u5728\u7531 QUIC \u5ba2\u6237\u7aef\uff08\u653b\u51fb\u8005\uff09\u53d1\u8d77\u8bf7\u6c42\u4f2a\u9020\u653b\u51fb\u65f6\uff0c\u8bf7\u6c42\u4f2a\u9020\u4f1a\u5bfc\u81f4 QUIC \u670d\u52a1\u5668\uff08\u53d7\u5bb3\u8005\uff09\u53d1\u9001\u653b\u51fb\u8005\u63a7\u5236\u7684\u6570\u636e\u5305\u3002 \u653b\u51fb\u8005\u53ef\u4ee5\u5229\u7528\u670d\u52a1\u5668\u5728\u7f51\u7edc\u4e2d\u7684\u4f4d\u7f6e\u6765\u83b7\u5f97\u66f4\u9ad8\u7684\u6743\u9650\uff08\u4f8b\u5982\u73af\u5883\u6743\u9650\uff09\u548c\u8bbf\u95ee\u66f4\u591a\u7684\u8d44\u6e90\uff08\u4f8b\u5982\u5e26\u5bbd\uff09\u3002\u5177\u4f53\u6765\u8bf4\uff0c\u672c\u6587\u8bc4\u4f30\u4e86QUIC \u89c4\u8303\u4e2d\u5f15\u5165\u7684\u4e24\u79cd\u8bf7\u6c42\u4f2a\u9020\u653b\u51fb\u6a21\u5f0f\uff0c\u5b83\u4eec\u57fa\u4e8e QUIC \u4e2d\u7684\u8fde\u63a5\u8fc1\u79fb\uff08CMRF\uff09\u548c\u7248\u672c\u534f\u5546\u673a\u5236\uff08VNRF\uff09\u3002 \u6b64\u5916\uff0c\u672c\u7814\u7a76\u8fd8\u4ecb\u7ecd\u4e86\u7b2c\u4e09\u79cd\u8bf7\u6c42\u4f2a\u9020\u653b\u51fb\u65b9\u5f0f\uff0c\u5373\u5229\u7528\u6807\u51c6\u63e1\u624b (SIRF) \u4e2d\u7684\u670d\u52a1\u5668\u521d\u59cb\u6d88\u606f\u3002 \u5b83\u4eec\u90fd\u4f1a\u5bfc\u81f4 QUIC \u670d\u52a1\u5668\u5411\u76ee\u6807\u4e3b\u673a\u53d1\u51fa\u201c\u610f\u5916\u201d\u8bf7\u6c42\u3002<\/p>\n

\u672c\u7814\u7a76\u5206\u6790\u4e86 QUIC \u4e2d\u5ba2\u6237\u7aef\u8bf7\u6c42\u4f2a\u9020\u7684\u53ef\u884c\u6027\uff0c\u4e3b\u8981\u6709\u4e24\u4e2a\u6f0f\u6d1e\uff1a\u9996\u5148\u662f\u534f\u8bae\u5047\u5192\u653b\u51fb\uff0c\u7531\u4e8e\u8bf7\u6c42\u4f2a\u9020\u53d1\u751f\u5728\u4f20\u8f93\u5c42\uff0c\u5b83\u4f7f\u653b\u51fb\u8005\u80fd\u591f\u4f2a\u9020\u5176\u4ed6\u5e94\u7528\u5c42\u534f\u8bae\u7684\u534f\u8bae\u6d88\u606f\uff0c\u7c7b\u4f3c\u4e8e\u8de8\u534f\u8bae\u8bf7\u6c42\u4f2a\u9020\u3002 \u5176\u6b21\u662f\u6d41\u91cf\u653e\u5927\u653b\u51fb\uff0c\u653b\u51fb\u8005\u53ef\u4ee5\u5229\u7528\u4f2a\u9020\u6d88\u606f\u4e0e\u5728\u653e\u5927\u62d2\u7edd\u670d\u52a1 (DoS) \u573a\u666f\u4e2d\u89e6\u53d1\u8bf7\u6c42\u4f2a\u9020\u6240\u9700\u7684\u6d88\u606f\u4e4b\u95f4\u7684\u5927\u5c0f\u4e0d\u5e73\u8861\uff0c\u5177\u4f53\u5de5\u4f5c\u5982\u4e0b\u56fe\u6240\u793a\u3002<\/p>\n

\"\"<\/p>\n

\u6b64\u5916\uff0c\u672c\u7814\u7a76\u8fd8\u63d0\u4f9b\u4e86\u53ef\u63a7\u653b\u51fb\u7a7a\u95f4\u7684\u5206\u6790\u3002 \u7279\u522b\u662f\u57fa\u4e8e\u7248\u672c\u534f\u5546\u7684\u8bf7\u6c42\u4f2a\u9020\u5bb9\u6613\u53d7\u5230\u534f\u8bae\u5047\u5192\u7684\u5f71\u54cd\u3002\u7814\u7a76\u8005\u4e3a\u6b64\u63d0\u4f9b\u4e86\u653b\u51fb\u5411\u91cf\u7684\u6982\u5ff5\u8bc1\u660e\uff0c\u5b83\u53ef\u4ee5\u8bf1\u5bfc\u53d7\u5bb3\u8005\u53d1\u9001\u6709\u6548\u7684 DNS \u8bf7\u6c42\u3002 \u672c\u7814\u7a76\u8fdb\u4e00\u6b65\u8bc4\u4f30\u4e86 13 \u4e2a QUIC \u7684\u5f00\u6e90\u5b9e\u73b0\uff0c\u5e76\u8868\u660e\u5b83\u4eec\u901a\u5e38\u5bb9\u6613\u53d7\u5230\u81f3\u5c11\u4e00\u79cd\u8bf7\u6c42\u4f2a\u9020\u653b\u51fb\u6a21\u5f0f\u7684\u653b\u51fb\u3002 \u9664\u4e86\u4e00\u822c\u6f0f\u6d1e\u5916\uff0c\u672c\u7814\u7a76\u8fd8\u786e\u5b9a\u4e86\u89c4\u8303\u4e2d\u7684\u7f3a\u9677\uff0c\u8fd9\u8868\u73b0\u4e3a\u5728 13 \u4e2a\u5f00\u6e90\u5b9e\u73b0\u4e2d\u6709 9 \u4e2a\u4e0d\u7b26\u5408\u53cd\u653e\u5927\u9650\u5236\u3002 \u6700\u540e\uff0c\u8ba8\u8bba\u4e86\u5982\u4f55\u51cf\u8f7b\u8bf7\u6c42\u4f2a\u9020\u653b\u51fb\u5f71\u54cd\u3002<\/p>\n

0x02 QUIC\u8bf7\u6c42\u4f2a\u9020<\/h2>\n

A. QUIC \u57fa\u7840\u77e5\u8bc6<\/h3>\n

QUIC \u7684\u5e7f\u6cdb\u91c7\u7528\u5bfc\u81f4\u4e86 Web \u534f\u8bae\u6808\u53d8\u5316\uff0c\u5982\u4e0b\u56fe\u6240\u793a\u3002QUIC \u662f\u4e00\u79cd\u9762\u5411\u8fde\u63a5\u7684\u534f\u8bae\uff0c\u5373\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u5668\u5177\u6709\u4e00\u4e2a\u5171\u4eab\u72b6\u6001\uff0c\u7528\u4e8e\u53ef\u9760\u5730\u5411\u5e94\u7528\u7a0b\u5e8f\u63d0\u4f9b\u6570\u636e\u3002\u4e3a\u4e86\u8bc6\u522b\u8fde\u63a5\uff0cQUIC \u5f15\u5165\u4e86\u8fde\u63a5 ID (CID) \u4f5c\u4e3a\u7aef\u70b9\u6807\u8bc6\u7b26\uff0c\u4ee5\u5141\u8bb8 UDP \u7aef\u53e3\u548c IP \u5730\u5740\u7684\u7f51\u7edc\u8def\u5f84\u66f4\u6539\u3002 \u5728\u5f53\u524d\u7248\u672c\u4e2d\uff0cCID \u7684\u957f\u5ea6\u662f\u53ef\u53d8\u7684\uff0c\u4f46\u4e0d\u8d85\u8fc7 20 \u4e2a\u5b57\u8282\uff0c\u5e76\u4e14\u4e0d\u5f97\u5305\u542b\u4efb\u4f55\u53ef\u7528\u4e8e\u5173\u8054 CID \u7684\u4fe1\u606f\u3002 \u56e0\u6b64\uff0c\u4e00\u4e2a\u8fde\u63a5\u7684\u6240\u6709 CID \u90fd\u5fc5\u987b\u968f\u673a\u72ec\u7acb\u751f\u6210\u3002 CID \u7684\u957f\u5ea6\u5728\u63e1\u624b\u4e2d\u6216\u5728\u8fde\u63a5\u671f\u95f4\u901a\u8fc7NEW_CONNECTION_ID \u5e27\u8fdb\u884c\u901a\u4fe1\u3002 \u5e38\u89c4\u6570\u636e\u5305\u5177\u6709\u4ec5\u5305\u542b\u76ee\u6807 CID (DCID) \u7684\u77ed\u6807\u5934\u683c\u5f0f\u3002 \u56e0\u6b64\uff0c\u7aef\u70b9\u9700\u8981\u8bb0\u4f4f\u76f8\u5e94\u7684\u957f\u5ea6\u3002 \u5bf9\u7b49\u70b9\u53ef\u4ee5\u5b58\u50a8\u591a\u4e2a CID \u4ee5\u4f9b\u5c06\u6765\u7528\u4e8e\u8fde\u63a5\u3002<\/p>\n

\"\"<\/p>\n

QUIC \u63e1\u624b\uff08\u4e0b\u56fe\uff09\u7ed3\u5408\u4e86\u4f20\u8f93\u5c42\u63e1\u624b\u548c TLS \u52a0\u5bc6\u63e1\u624b\u3002 \u521d\u59cb\u6570\u636e\u5305\u7c7b\u4f3c\u4e8e TCP \u7684 3 \u6b21\u63e1\u624b\uff0c\u800c TLS \u53c2\u6570\u5728 CRYPTO \u5e27\u4e2d\u201cpiggybacked\u201d\u3002 \u63e1\u624b\u4e2d\u7684\u6240\u6709\u6570\u636e\u5305\u90fd\u4f7f\u7528\u957f\u62a5\u5934\u683c\u5f0f\uff0c\u5e76\u5305\u542b\u6e90 CID (SCID) \u4ee5\u53ca\u5177\u6709\u76f8\u5e94\u957f\u5ea6\u7684 DCID\u3002 \u4f5c\u4e3a\u670d\u52a1\u5668\u521d\u59cb\u6570\u636e\u5305\u7684\u66ff\u4ee3\u65b9\u6848\uff0c\u670d\u52a1\u5668\u53ef\u4ee5\u53d1\u9001\u5305\u542b\u4ee4\u724c\u7684\u91cd\u8bd5\u6570\u636e\u5305\u3002 \u6b64\u4ee4\u724c\u5fc5\u987b\u5728\u6765\u81ea\u5ba2\u6237\u7aef\u7684\u7b2c\u4e8c\u4e2a\u521d\u59cb\u6570\u636e\u5305\u4e2d\u8fdb\u884c\u955c\u50cf\u4ee5\u9a8c\u8bc1\u8def\u5f84\u3002\u6ca1\u6709\u91cd\u8bd5\u7684\u6b63\u5e38\u63e1\u624b\u4e5f\u4f1a\u9690\u5f0f\u6267\u884c\u8def\u5f84\u9a8c\u8bc1\u3002 \u4f46\u662f\u901a\u8fc7\u4f7f\u7528\u91cd\u8bd5\u6570\u636e\u5305\uff0c\u670d\u52a1\u5668\u53ef\u4ee5\u907f\u514d\u5c06\u660e\u663e\u66f4\u5927\u7684\u52a0\u5bc6\u4fe1\u606f\u53d1\u9001\u5230\u672a\u7ecf\u9a8c\u8bc1\u7684\u7aef\u70b9\u3002 \u5982\u679c\u670d\u52a1\u5668\u6536\u5230\u672a\u77e5\u7248\u672c\uff0c\u5b83\u4f1a\u7528\u7248\u672c\u534f\u5546\uff08Version Negotiation\uff09\u6570\u636e\u5305\u8fdb\u884c\u5e94\u7b54\uff0c\u63d0\u4f9b\u652f\u6301\u7684\u7248\u672c\u5217\u8868\u3002 \u7248\u672c\u534f\u5546\u6570\u636e\u5305\u5fc5\u987b\u59cb\u7ec8\u5177\u6709\u7248\u672c\u6807\u8bc6\u7b26 0x00000000 \u3002<\/p>\n

\"\"<\/p>\n

QUIC \u7684\u4e00\u4e2a\u76f8\u5f53\u72ec\u7279\u7684\u529f\u80fd\u662f\u8fde\u63a5\u8fc1\u79fb\uff08Connection Migration\uff09\u3002CID \u7684\u4f7f\u7528\u5141\u8bb8\u8fde\u63a5\u5728\u8fde\u63a5\u5efa\u7acb\u540e\u5728\u7aef\u70b9\u5730\u5740\u66f4\u6539\u540e\u7ee7\u7eed\u5b58\u5728\u3002 \u5982\u679c\u670d\u52a1\u5668\u68c0\u6d4b\u5230\u8fc1\u79fb\u7684\u7aef\u70b9\uff0c\u5219\u5b83\u5fc5\u987b\u5bf9\u65b0\u4e3b\u673a\u6267\u884c\u8def\u5f84\u9a8c\u8bc1\u3002\u4e3a\u4e86\u9a8c\u8bc1\u8def\u5f84\uff0c\u670d\u52a1\u5668\u53d1\u9001\u4e00\u4e2a PATH_CHALLENGE \u5e27\uff0c\u5176\u4e2d\u5305\u542b\u4e00\u4e2a\u5fc5\u987b\u7531\u5ba2\u6237\u7aef\u5728 PATH_RESPONSE \u5e27 \u4e2d\u955c\u50cf\u7684\u4ee4\u724c\u3002<\/p>\n

B. \u7cfb\u7edf\u548c\u5a01\u80c1\u6a21\u578b<\/h3>\n

\u5f53\u653b\u51fb\u8005\u80fd\u591f\u89e6\u53d1\u4e3b\u673a\uff08\u53d7\u5bb3\u8005\uff09\u5411\u53e6\u4e00\u53f0\u4e3b\u673a\uff08\u76ee\u6807\uff09\u53d1\u9001\u4e00\u4e2a\u6216\u591a\u4e2a\u201c\u610f\u5916\u201d\u7f51\u7edc\u8bf7\u6c42\u65f6\uff0c\u5c31\u4f1a\u53d1\u751f\u8bf7\u6c42\u4f2a\u9020\u653b\u51fb\uff0c\u8fd9\u662f\u901a\u8fc7\u6ee5\u7528\u534f\u8bae\u529f\u80fd\u6216\u6ee5\u7528\u5e94\u7528\u7a0b\u5e8f\u903b\u8f91\u7f3a\u9677\u6765\u5b9e\u73b0\u7684\u3002 \u672c\u6587\u4e2d\u63a2\u8ba8\u4e86\u7531\u5ba2\u6237\u7aef\u53d1\u8d77\u7684\u8bf7\u6c42\u4f2a\u9020\u653b\u51fb\uff0c\u5373\u5ba2\u6237\u7aef\u8bf7\u6c42\u4f2a\u9020\u3002 \u56e0\u6b64\uff0c\u5ba2\u6237\u7aef – \u653b\u51fb\u8005\u4ee5\u53ca\u670d\u52a1\u5668 – \u53d7\u5bb3\u8005\u8fd9\u4e24\u4e2a\u8bcd\u662f\u540c\u4e49\u8bcd\u3002 \u653b\u51fb\u8005\u53ef\u4ee5\u5229\u7528\u8bf7\u6c42\u4f2a\u9020\u6765\u5b9e\u73b0\u4e24\u4e2a\u76ee\u6807\uff0c\u5982\u4e0b\u56fe\u6240\u793a\u3002\u9996\u5148\uff0c\u5229\u7528\u53d7\u5bb3\u8005\u7684\u66f4\u9ad8\u6743\u9650\uff0c\u5373\u5185\u90e8\/\u53d7\u9650\u7f51\u7edc\u8bbf\u95ee\u6216\u66f4\u9ad8\u6743\u9650\u3002 \u5176\u6b21\uff0c\u5229\u7528\u4ece\u670d\u52a1\u5668\u5230\u76ee\u6807\u7684\u66f4\u9ad8\u53ef\u7528\u5e26\u5bbd\u3002<\/p>\n

\"\"<\/p>\n

\u5bf9\u4e8e\u672c\u7814\u7a76\u6240\u63d0\u51fa\u7684\u653b\u51fb\uff0c\u5047\u8bbe\u653b\u51fb\u8005\u80fd\u591f\u5b8c\u5168\u63a7\u5236\u53d1\u9001\u7ed9\u53d7\u5bb3\u8005\u7684\u6570\u636e\u5305\u7684\u5185\u5bb9\uff0c\u5305\u62ec IP \u5730\u5740\u548c\u7aef\u53e3\u6b3a\u9a97\u3002 \u867d\u7136\u5047\u8bbe\u53d7\u5bb3\u670d\u52a1\u5668\u4f1a\u7406\u89e3 QUIC \uff0c\u4f46\u627f\u8ba4\u5728\u5404\u4e2a\u670d\u52a1\u5668\u5b9e\u73b0\u4e2d\u53ef\u80fd\u4f1a\u51fa\u73b0\u9519\u8bef\u548c\u6545\u969c\u3002\u76ee\u6807\u4e0d\u9700\u8981\u80fd\u591f\u4f7f\u7528 QUIC\uff0c\u4f46\u81f3\u5c11\u6709\u4e00\u4e2a UDP \u7aef\u53e3\u9700\u8981\u4f20\u5165\u7684\u6570\u636e\u62a5\u3002 \u867d\u7136\u653b\u51fb\u8005\u53ef\u80fd\u65e0\u6cd5\u76f4\u63a5\u5230\u8fbe\u76ee\u6807\uff0c\u4f46\u53d7\u5bb3\u8005\u5fc5\u987b\u80fd\u591f\u5230\u8fbe\u5b83\u3002<\/p>\n

C. \u8bf7\u6c42\u4f2a\u9020\u653b\u51fb\u65b9\u5f0f<\/h3>\n

\u4e0b\u9762\u5206\u522b\u4ecb\u7ecd\u4e09\u79cd\u5ba2\u6237\u7aef\u8bf7\u6c42\u4f2a\u9020\u6280\u672f\uff0c\u5373\u670d\u52a1\u5668\u521d\u59cb\u8bf7\u6c42\u4f2a\u9020\uff08Server Initial Request Forgery\uff0cSIRF\uff09\u3001\u7248\u672c\u534f\u5546\u8bf7\u6c42\u4f2a\u9020\uff08Version Negotiation Request Forgery\uff0cVNRF\uff09\u548c\u8fde\u63a5\u8fc1\u79fb\u8bf7\u6c42\u4f2a\u9020\uff08Connection Migration Request Forgery\uff0cCMRF\uff09\u3002 \u5982\u65e0\u7279\u522b\u8bf4\u660e\uff0c\u5047\u5b9a\u4e0a\u8ff0\u6a21\u578b\u6210\u7acb\u3002<\/p>\n

1\uff09\u670d\u52a1\u5668\u521d\u59cb\u8bf7\u6c42\u4f2a\u9020\uff08SIRF\uff09\uff1a<\/strong>SIRF \u53ef\u80fd\u662f QUIC \u4e2d\u5ba2\u6237\u7aef\u6700\u57fa\u672c\u7684\u8bf7\u6c42\u4f2a\u9020\u6280\u672f\uff0c\u7136\u800cQUIC \u89c4\u8303\u4e2d\u76ee\u524d\u5e76\u672a\u63d0\u53ca\u6240\u63cf\u8ff0\u7684\u6280\u672f\u3002 SIRF \u653b\u51fb\u6982\u5ff5\u9075\u5faa\u4e0b\u56fea\u4e2d\u63cf\u8ff0\u7684\u6b65\u9aa4\uff0c\u653b\u51fb\u5ba2\u6237\u7aef\u6839\u636e\u534f\u8bae\u5b9a\u4e49\uff0c\u4f7f\u7528\u670d\u52a1\u5668\u652f\u6301\u7684\u7248\u672c\u53d1\u8d77\u4e0e\u53d7\u5bb3\u670d\u52a1\u5668\u7684 QUIC \u63e1\u624b\u3002 \u4f46\u662f\uff0c\u7b2c\u4e00\u4e2a\u6570\u636e\u5305\u7684\u6e90IP\u548c\u7aef\u53e3\u662f\u76f4\u63a5\u4f2a\u9020\u7684\u3002 \u56e0\u6b64\uff0c\u53d7\u5bb3\u8005\u5047\u8bbe\u65b0\u7684\u8fde\u63a5\u5c1d\u8bd5\u6765\u81ea\u76ee\u6807\u4e3b\u673a\uff0c\u5e76\u901a\u8fc7\u53d1\u9001\u670d\u52a1\u5668\u521d\u59cb\u6570\u636e\u5305\u6216\u91cd\u8bd5\u6570\u636e\u5305\u6765\u7ee7\u7eed\u63e1\u624b\u3002<\/p>\n

\"\"<\/p>\n

2) \u7248\u672c\u534f\u5546\u8bf7\u6c42\u4f2a\u9020\uff08VNRF\uff09\uff1a<\/strong>VNRF \u7c7b\u4f3c\u4e8e SIRF\uff0c\u4f46\u6ee5\u7528\u4e86 QUIC \u63e1\u624b\u7684\u53e6\u4e00\u79cd\u53d8\u4f53\uff1a\u5982\u679c\u5ba2\u6237\u7aef\u7684\u521d\u59cb\u6570\u636e\u5305\u4e2d\u5305\u542b\u672a\u77e5\u7248\u672c\uff0c\u5219 QUIC \u670d\u52a1\u5668\u4ee5\u7248\u672c\u534f\u5546\u6570\u636e\u5305\u8fdb\u884c\u54cd\u5e94\u3002 \u6076\u610f\u5ba2\u6237\u7aef\u53ef\u4ee5\u53d1\u9001\u4e00\u4e2a\u4e0d\u5b58\u5728\u7684\u7248\u672c\u6807\u8bc6\u7b26\u6765\u53ef\u9760\u5730\u89e6\u53d1\u7248\u672c\u534f\u5546\u529f\u80fd\u3002 \u5982\u679c\u5ba2\u6237\u7aef\u8fdb\u4e00\u6b65\u6b3a\u9a97\u6570\u636e\u62a5\u7684\u6e90\uff0c\u5219\u7248\u672c\u534f\u5546\u88ab\u53d1\u9001\u5230\u76ee\u6807\uff0c\u7c7b\u4f3c\u4e8e SIRF\u3002 \u6574\u4e2a\u6d88\u606f\u6d41\u5982\u4e0a\u56feb\u6240\u793a\u3002<\/p>\n

3\uff09\u8fde\u63a5\u8fc1\u79fb\u8bf7\u6c42\u4f2a\u9020\uff08CMRF\uff09\uff1a<\/strong>\u6700\u540e\u4e00\u79cd\u8bf7\u6c42\u4f2a\u9020\u6280\u672f\u5229\u7528\u4e86 QUIC \u7684\u8fde\u63a5\u8fc1\u79fb\u529f\u80fd\u3002 \u670d\u52a1\u5668\u65e0\u6cd5\u68c0\u6d4b\u8fc1\u79fb\u5730\u5740\u662f\u5426\u6765\u81ea\u5ba2\u6237\u7aef\u7684\u771f\u5b9e\u8fc1\u79fb\uff0c\u6216\u8005\u6e90\u5730\u5740\u662f\u5426\u88ab\u6b3a\u9a97\u3002 \u5728\u8fd9\u4e24\u79cd\u60c5\u51b5\u4e0b\uff0c\u90fd\u4f1a\u53d1\u9001 PATH_CHALLENGE\u3002 \u8fd9\u5141\u8bb8\u653b\u51fb\u8005\u542f\u52a8 UDP \u6570\u636e\u62a5\u7684\u53d1\u9001\uff0c\u5176\u4e2d\u5e26\u6709\u81f3\u5c11\u4e00\u4e2a PATH_CHALLENGE \u5e27\u7684 QUIC \u6570\u636e\u5305\u5230\u4efb\u610f IP \u5730\u5740\u548c\u7aef\u53e3\uff0c\u5982\u4e0a\u56fec \u6240\u793a\u3002 \u8981\u6267\u884c CMRF\uff0c\u653b\u51fb\u8005\u9700\u8981\u542f\u52a8\u65b0\u8fde\u63a5\u5e76\u6309\u9884\u671f\u5b8c\u6210\u63e1\u624b\u3002 \u670d\u52a1\u5668\u5fc5\u987b\u4ece\u5ba2\u6237\u7aef CID \u6c60\u4e2d\u4e3a\u65b0\u8def\u5f84\u4f7f\u7528New CID\u3002 \u56e0\u6b64\u539f\u59cb\u8fde\u63a5\u9700\u8981\u505c\u7559\u5728\u521d\u59cb\u7aef\u70b9\u4e0a\uff0c\u76f4\u5230\u670d\u52a1\u5668\u4ece\u5ba2\u6237\u7aef\u63a5\u6536\u5230\u81f3\u5c11\u4e00\u4e2a NEW_CONNECTION_ID \u5e27\u3002 \u5f53\u6ee1\u8db3\u8fd9\u4e9b\u5148\u51b3\u6761\u4ef6\u65f6\uff0c\u653b\u51fb\u8005\u5c31\u4f1a\u6b3a\u9a97\u4efb\u610f\u6570\u636e\u5305\u7684\u6e90\u5730\u5740\u3002 \u68c0\u6d4b\u5230\u65b0\u5730\u5740\u7684\u670d\u52a1\u5668\u542f\u52a8\u8def\u5f84\u9a8c\u8bc1\uff0c\u4ece\u800c\u5411\u8be5\u5730\u5740\u53d1\u9001 UDP \u6570\u636e\u5305\u3002<\/p>\n

0x03 \u534f\u8bae\u5047\u5192\u653b\u51fb<\/h2>\n

\u7531\u4e8e QUIC \u5728\u6280\u672f\u4e0a\u662f\u4e00\u79cd\u5e94\u7528\u5c42\u534f\u8bae\uff0c\u56e0\u6b64\u653b\u51fb\u8005\u53ef\u4ee5\u901a\u8fc7\u8bf7\u6c42\u4f2a\u9020\u6765\u653b\u51fb\u5176\u4ed6\u57fa\u4e8e UDP \u7684\u534f\u8bae\u3002 \u5982\u679c\u653b\u51fb\u8005\u80fd\u591f\u63a7\u5236\u4f2a\u9020\u7684 QUIC \u6570\u636e\u5305\u4e2d\u8db3\u591f\u591a\u7684\u6570\u636e\uff0c\u4ed6\u53ef\u80fd\u80fd\u591f\u6a21\u4eff\u5176\u4ed6\u534f\u8bae\u7684\u6570\u636e\u5305\u3002 \u867d\u7136\u5728\u6587\u732e\u4e2d\u653b\u51fb\u672c\u8eab\u4e5f\u79f0\u4e3a\u8de8\u534f\u8bae\u8bf7\u6c42\u4f2a\u9020 (Cross-protocol Request Forgery\uff0cCPRF) \uff0c\u4f46\u5728\u6b64\u4f7f\u7528\u672f\u8bed\u201c\u534f\u8bae\u5047\u5192\u201d\uff08Protocol Impersonation\uff09\u6765\u533a\u5206\u653b\u51fb\u6a21\u5f0f\uff08SIRF\u3001VNRF \u548c CMRF\uff09\u4ee5\u53ca\u53ef\u4ee5\u5229\u7528\u7684\u653b\u51fb\u5411\u91cf\u3002<\/p>\n

\u6570\u636e\u5305\u7684\u672a\u52a0\u5bc6\u90e8\u5206\u662f\u534f\u8bae\u5047\u5192\u7684\u4e3b\u8981\u653b\u51fb\u9762\u3002 \u653b\u51fb\u8005\u4e5f\u53ef\u80fd\u4fee\u6539\u52a0\u5bc6\u90e8\u5206\u7684\u5bc6\u6587\uff0c\u4f46\u8fd9\u4e9b\u52a0\u5bc6\u653b\u51fb\u5c06\u8d85\u51fa\u672c\u6587\u7684\u8303\u56f4\u3002 \u6570\u636e\u5305\u7684\u67d0\u4e9b\u90e8\u5206\u4e5f\u53ef\u80fd\u4f1a\u6839\u636e\u5ba2\u6237\u7aef-\u670d\u52a1\u5668\u7ec4\u5408\u3001\u4f7f\u7528\u7684\u7248\u672c\u548c\u7f51\u7edc\u6761\u4ef6\u7b49\u56e0\u7d20\u53d1\u751f\u53d8\u5316\u3002 \u4f46\u662f\uff0c\u91cd\u70b9\u5728\u4e8e\u53ef\u4ee5\u5728\u5927\u591a\u6570\u73af\u5883\u4e2d\u53ef\u9760\u5730\u64cd\u4f5c\u7684\u6570\u636e\u3002<\/p>\n

\u4e0b\u6587\u5206\u6790\u4e86\u53ef\u63a7\u653b\u51fb\u7a7a\u95f4\uff0c\u5373\u4e0e\u653b\u51fb\u65b9\u5f0fSIRF\u3001VNRF \u548c CMRF \u76f8\u5173\u7684\u77ed\u6807\u5934\u548c\u957f\u6807\u5934\u7684\u53ef\u63a7\u4f4d\u3002 \u7ed3\u679c\u8868\u660eSIRF\u548cCMRF\u7684\u53ef\u63a7\u653b\u51fb\u7a7a\u95f4\u660e\u663e\u6709\u9650\u3002 \u7136\u800c\uff0cVNRF \u7684\u53ef\u63a7\u653b\u51fb\u7a7a\u95f4\u8db3\u4ee5\u6267\u884c\u534f\u8bae\u5047\u5192\u3002\u901a\u8fc7\u534f\u8bae\u5047\u5192\u7684\u6982\u5ff5\u8bc1\u660e\uff08Proof of Concept\uff0cPoC\uff09\u6765\u6f14\u793a\u6b64\u653b\u51fb\u5411\u91cf\uff0c\u8be5\u534f\u8bae\u5047\u5192\u4f7f\u7528 VNRF \u4f2a\u9020\u6709\u6548\u7684 DNS \u67e5\u8be2\u3002<\/p>\n

A. \u77ed\u6807\u5934\u4e2d\u7684\u53ef\u63a7\u4f4d (CMRF)<\/h3>\n

\u5728 CMRF \u653b\u51fb\u671f\u95f4\uff0c\u8def\u5f84\u6311\u6218\u548c\u53ef\u80fd\u7684\u586b\u5145\u5728\u5e26\u6709\u77ed\u6807\u5934\u7684\u6570\u636e\u5305\u4e2d\u4f20\u8f93\u3002 \u56e0\u6b64\u672a\u52a0\u5bc6\u548c\u53ef\u63a7\u7684\u6570\u636e\u91cf\u975e\u5e38\u6709\u9650\u3002\u4e0b\u56fe\u5217\u51fa\u4e86\u77ed\u62a5\u5934\u6570\u636e\u5305\u7684\u8be6\u7ec6\u7ed3\u6784\u3002 \u7b2c\u4e00\u4f4d\u8868\u793a\u77ed\u5934\u683c\u5f0f\u5e76\u4e14\u662f\u56fa\u5b9a\u7684\u3002 \u5bf9\u4e8e\u4e0e\u5b9a\u4e49\u7684\u5176\u4ed6\u4f20\u8f93\u5c42\u534f\u8bae\u7684\u4e92\u64cd\u4f5c\u6027\u6240\u9700\u7684\u7b2c\u4e8c\u4f4d\u4e5f\u662f\u5982\u6b64\u3002 \u81ea\u65cb\u4f4d\uff08spin\uff09\u7528\u4e8e\u88ab\u52a8\u5ef6\u8fdf\u76d1\u63a7\u5e76\u65bd\u52a0\u4e0d\u53ef\u9884\u6d4b\u7684\u884c\u4e3a\u3002 \u5b83\u53ef\u4ee5\u5b8c\u5168\u5173\u95ed\uff0c\u4e5f\u53ef\u4ee5\u968f\u673a\u5173\u95ed\uff0c\u4ee5\u786e\u4fdd\u5728\u7f51\u7edc\u4e0a\u7ecf\u5e38\u89c2\u5bdf\u5230\u7981\u7528\u65cb\u8f6c\u4f4d\u7684\u8fde\u63a5\uff0c\u5b83\u4e0d\u80fd\u53ef\u9760\u5730\u63a7\u5236\u3002<\/p>\n

\"\"<\/p>\n

\u4f4d4\u548c5\u662f\u4e24\u4e2a\u4fdd\u7559\u4f4d\uff0c\u5fc5\u987b\u4e3a\u96f6\uff0c\u7b2c\u516d\u4f4d\u662f\u7528\u4e8e\u8bc6\u522b\u6570\u636e\u5305\u4fdd\u62a4\u5bc6\u94a5\u7684\u5bc6\u94a5\u76f8\u4f4d\u3002 \u6240\u6709\u4e09\u4e2a\u4f4d\u5747\u7531\u670d\u52a1\u5668\u76f4\u63a5\u8bbe\u7f6e\uff0c\u4e0d\u53d7\u653b\u51fb\u8005\u63a7\u5236\u3002 \u7b2c\u4e00\u4e2a\u5b57\u8282\u7684\u6700\u540e\u4e24\u4f4d\u88ab\u89e3\u91ca\u4e3a\u65e0\u7b26\u53f7\u6574\u6570\uff0c\u5e76\u6307\u793a DCID \u4e4b\u540e\u7684\u6570\u636e\u5305\u7f16\u53f7\u7684\u53ef\u53d8\u957f\u5ea6\u3002 \u5305\u542b\u7684\u503c\u6bd4\u6570\u636e\u5305\u7f16\u53f7\u5b57\u6bb5 \u7684\u5b9e\u9645\u5b57\u8282\u957f\u5ea6\u5c0f1\u3002 \u5047\u8bbe\u53ea\u8981\u653b\u51fb\u8005\u613f\u610f\uff0c\u8fde\u63a5\u5c31\u53ef\u4ee5\u4fdd\u6301\u6253\u5f00\u72b6\u6001\uff0c\u90a3\u4e48\u5728\u5f00\u59cb\u8fc1\u79fb\u4e4b\u524d\uff0c\u53ea\u9700\u7b49\u5f85\u6570\u636e\u5305\u6570\u91cf\u8fbe\u5230\u67d0\u4e2a\u7279\u5b9a\u503c\uff0c\u5c31\u53ef\u4ee5\u5f71\u54cd CMRF \u7684\u6570\u636e\u5305\u6570\u91cf\u3002 \u6570\u636e\u5305\u7f16\u53f7\u957f\u5ea6\u4f4d\u76f4\u63a5\u53d6\u51b3\u4e8e\u6570\u636e\u5305\u7f16\u53f7\uff0c\u4f46\u53ea\u8981\u4e00\u4e2a\u503c\u53ef\u4ee5\u7f16\u7801\u4e3a\u76f8\u540c\u6570\u91cf\u7684\u5b57\u8282\uff0c\u5b83\u4eec\u5c31\u4f1a\u4fdd\u6301\u4e0d\u53d8\u3002 \u8fd9\u4e9b\u5934\u5b57\u6bb5\u7684\u5f3a\u4e92\u8fde\u548c\u4f9d\u8d56\u6027\u660e\u663e\u964d\u4f4e\u4e86\u6709\u6548\u7684\u53ef\u63a7\u6027\u3002<\/p>\n

\u6700\u540e\u4e00\u4e2a\u5269\u4f59\u503c\u662f DCID\uff0c\u5b83\u5177\u6709 0 \u5230 20 \u5b57\u8282\u4e4b\u95f4\u7684\u53ef\u53d8\u957f\u5ea6\u6574\u6570\u3002 DCID \u7684\u5185\u5bb9\u5b8c\u5168\u7531\u5ba2\u6237\u7aef\u63a7\u5236\u3002 \u653b\u51fb\u8005\u53ef\u80fd\u4f1a\u9009\u62e9 20 \u5b57\u8282\u7684\u957f\u5ea6\u6765\u6700\u5927\u5316\u53ef\u63a7\u7a7a\u95f4\u3002\u4f5c\u4e3a\u9644\u52a0\u9650\u5236\uff0c\u9700\u8981\u8003\u8651\u53d1\u9001\u5230\u670d\u52a1\u5668\u7684\u591a\u4e2a CID \u4e0d\u80fd\u5305\u542b\u76f8\u540c\u7684\u503c\u3002<\/p>\n

B. \u957f\u6807\u5934\u4e2d\u7684\u53ef\u63a7\u4f4d\uff08SIRF \u548c VNRF\uff09<\/h3>\n

SIRF \u548c VNRF \u4f7f\u7528\u4f5c\u4e3a QUIC \u63e1\u624b\u4e00\u90e8\u5206\u7684\u6d88\u606f\u6d41\u3002 \u56e0\u6b64\uff0c\u968f\u7740\u66f4\u591a\u672a\u52a0\u5bc6\u6570\u636e\u7684\u4f20\u8f93\uff0c\u8fd9\u4e24\u79cd\u653b\u51fb\u6280\u672f\u90fd\u80fd\u591f\u63a7\u5236\u6bd4 CMRF \u53ef\u80fd\u63a7\u5236\u7684\u66f4\u591a\u6570\u636e\u3002 \u4e3a\u6b64\uff0cQUIC \u4f7f\u7528\u957f\u6807\u5934\u3002\u867d\u7136\u521d\u59cb\u548c\u7248\u672c\u534f\u5546\u6570\u636e\u5305\u7684\u957f\u6807\u5934\u6709\u76f8\u4f3c\u4e4b\u5904\uff0c\u4f46\u4e5f\u5b58\u5728\u660e\u663e\u5dee\u5f02\uff0c\u5c06\u5728\u4e0b\u6587\u4e2d\u5206\u522b\u8fdb\u884c\u5256\u6790\u3002<\/p>\n

\"\"<\/p>\n

1) \u521d\u59cb\u6570\u636e\u5305\uff1a<\/strong>\u4e0a\u56fe\u663e\u793a\u4e86\u521d\u59cb\u6570\u636e\u5305\u7684\u957f\u62a5\u5934\u3002 \u7b2c\u4e00\u4f4d\u8bbe\u7f6e\u4e3a 1\uff0c\u8868\u793a\u957f\u62a5\u5934\u683c\u5f0f\u3002 \u7b2c\u4e8c\u4e2a\u56fa\u5b9a\u4f4d\u5fc5\u987b\u662f 1\uff0c\u4ee5\u5141\u8bb8 QUIC \u4e0e\u7c7b\u4f3c\u4e8e\u77ed\u6807\u5934\u7684\u5176\u4ed6\u534f\u8bae\u5171\u5b58\u3002 \u63a5\u4e0b\u6765\u7684\u4e24\u4f4d\u7528\u4e8e\u6307\u793a\u4e0d\u540c\u7c7b\u578b\u7684\u957f\u62a5\u5934\u6570\u636e\u5305\u3002 \u5bf9\u4e8e\u521d\u59cb\u6570\u636e\u5305\uff0c\u4e24\u8005\u90fd\u8bbe\u7f6e\u4e3a\u96f6\uff0c\u4fdd\u7559\u4f4d\u4e5f\u662f\u5982\u6b64\u3002 \u518d\u4e00\u6b21\uff0c\u5305\u53f7\u957f\u5ea6\u5bf9\u5e94\u4e8e\u5305\u540e\u9762\u8ddf\u968f\u7684\u5305\u53f7\u53ef\u53d8\u957f\u5ea6\u6574\u6570\u3002 \u5b83\u4eec\u5728 SIRF \u7528\u4f8b\u4e2d\u4e0d\u4f1a\u53d7\u5230\u5f71\u54cd\uff0c\u56e0\u4e3a\u8fde\u63a5\u8bbe\u7f6e\u7684\u7b2c\u4e00\u6761\u6d88\u606f\u5c06\u5305\u542b\u4e00\u4e2a\u65b0\u521d\u59cb\u5316\u7684\u8ba1\u6570\u5668\u3002 \u56e0\u6b64\uff0c\u653b\u51fb\u8005\u65e0\u6cd5\u63a7\u5236\u6807\u5934\u672b\u5c3e\u7684\u7b2c\u4e00\u4e2a\u5b57\u8282\u548c\u4e24\u5230\u56db\u4e2a\u5b57\u8282\u3002<\/p>\n

\u6570\u636e\u5305\u53f7\u957f\u5ea6\u4e4b\u540e\u7684\u5b57\u6bb5\u4ee5\u56db\u4e2a\u5b57\u8282\u5bf9\u7248\u672c\u6807\u8bc6\u7b26\u8fdb\u884c\u7f16\u7801\u3002 \u5c3d\u7ba1\u6b64\u503c\u662f\u52a8\u6001\u7684\u5e76\u4e14\u53ef\u4ee5\u7531\u653b\u51fb\u8005\u8bbe\u7f6e\uff0c\u4f46\u5b83\u5fc5\u987b\u662f\u670d\u52a1\u5668\u7406\u89e3\u7684\u9884\u5b9a\u4e49\u7248\u672c\u4ee5\u907f\u514d\u89e6\u53d1\u7248\u672c\u534f\u5546\u3002 \u9664\u4e86\u6781\u5c11\u6570\u60c5\u51b5\uff0c\u5047\u5192\u534f\u8bae\u53ef\u4ee5\u5728\u6709\u6548\u8d1f\u8f7d\u7684\u8fd9\u4e2a\u4f4d\u7f6e\u5305\u542b\u5b8c\u5168\u76f8\u540c\u7684\u56db\u4e2a\u5b57\u8282\uff0c\u8fd9\u4e9b\u5b57\u8282\u5c06\u4e0d\u53ef\u7528\u4e8e\u5047\u5192\u653b\u51fb\u3002 \u7248\u672c\u540e\u8ddf\u6e90\u548c\u76ee\u6807\u7684 CID\u3002 \u6bcf\u4e2a\u90fd\u5c06\u5728\u76f8\u5e94\u7684\u957f\u5ea6\u6807\u8bc6\u7b26\u4e4b\u524d\u3002\u5728 QUIC \u63e1\u624b\u671f\u95f4\uff0c\u670d\u52a1\u5668\u5c06\u59cb\u7ec8\u53d1\u9001\u5ba2\u6237\u7aef\u9009\u62e9\u7684 DCID\u3002 \u5982\u679c\u653b\u51fb\u8005\u60f3\u8981\u6700\u5927\u5316\u63a7\u5236\u7684\u6570\u636e\u91cf\uff0c\u4ed6\u5f88\u53ef\u80fd\u4f1a\u4f7f\u7528 20 \u5b57\u8282\uff0c\u4ece\u800c\u4e3a DCID \u957f\u5ea6\u5b57\u8282\u63d0\u4f9b\u9759\u6001\u503c 20 (0x14)\u3002<\/p>\n

\u670d\u52a1\u5668\u53d1\u9001\u7684SCID\u5b58\u5728\u4e24\u79cd\u60c5\u51b5\u3002 \u670d\u52a1\u5668\u8981\u4e48\u9009\u62e9\u5ba2\u6237\u7aef\u5728\u7b2c\u4e00\u4e2a\u521d\u59cb\u6570\u636e\u5305\u4e2d\u5efa\u8bae\u7684 CID\uff0c\u8981\u4e48\u8bbe\u7f6e\u81ea\u5df1\u7684 CID\u3002 \u7b2c\u4e00\u79cd\u60c5\u51b5\u79f0\u4e3a SIRF+\uff0c\u5bfc\u81f4 SCID \u7684\u53ef\u63a7\u5b57\u8282\u6570\u4e0e DCID \u7684\u53ef\u63a7\u5b57\u8282\u6570\u76f8\u540c\u3002 \u5728\u7b2c\u4e8c\u79cd\u60c5\u51b5\u4e0b\uff0c\u653b\u51fb\u8005\u65e0\u6cd5\u63a7\u5236\u6240\u9009\u7684 SCID \u5b57\u8282\u548c\u957f\u5ea6\uff0c\u4ece\u800c\u964d\u4f4e\u4e86\u653b\u51fb\u7684\u901a\u7528\u6027\u3002 \u7531\u4e8e\u8bb8\u591a\u7ecf\u8fc7\u6d4b\u8bd5\u7684\u5b9e\u73b0\u4e3a SCID \u9009\u62e9\u9759\u6001\u957f\u5ea6\uff0c\u56e0\u6b64\u5468\u56f4\u5b57\u8282\u7684\u4f4d\u7f6e\u81f3\u5c11\u4fdd\u6301\u53ef\u9884\u6d4b\u3002<\/p>\n

\u670d\u52a1\u5668\u521d\u59cb\u6570\u636e\u5305\u5fc5\u987b\u59cb\u7ec8\u5305\u542b\u957f\u5ea6\u4e3a\u96f6\u7684\u4ee4\u724c\uff0c\u56e0\u4e3a\u4ee4\u724c\u4ec5\u4f9b\u5ba2\u6237\u7aef\u4f7f\u7528\uff08\u4f8b\u5982\uff0c\u5728\u63a5\u6536\u91cd\u8bd5\u6570\u636e\u5305\u4e4b\u540e\uff09\u3002 \u6240\u4ee5\uff0c\u4ee4\u724c\u5b57\u6bb5\u4e0d\u5b58\u5728\uff0c\u5bfc\u81f4\u4e24\u4e2a\u5b57\u6bb5\u90fd\u51cf\u5c11\u4e3a\u4e00\u4e2a\u65e0\u6cd5\u63a7\u5236\u7684\u96f6\u5b57\u8282\u3002 \u6700\u540e\uff0c\u957f\u5ea6\u53c2\u6570\u5bf9\u5269\u4f59\u7684\u6570\u636e\u5305\u6709\u6548\u8f7d\u8377\u957f\u5ea6\u8fdb\u884c\u7f16\u7801\uff0c\u5305\u62ec\u6570\u636e\u5305\u7f16\u53f7\u3002 \u5b83\u7684\u957f\u5ea6\u53ef\u80fd\u4f1a\u6709\u6240\u4e0d\u540c\uff0c\u5177\u4f53\u53d6\u51b3\u4e8e\u6709\u6548\u8d1f\u8f7d\u5185\u5bb9\uff08\u4f8b\u5982\uff0c\u9009\u62e9\u7684 TLS \u53c2\u6570\uff09\u4ee5\u53ca\u5305\u542b\u7684\u586b\u5145\u3002 \u5c3d\u7ba1\u5982\u6b64\uff0c\u5b83\u4e5f\u4e0d\u53d7\u5ba2\u6237\u63a7\u5236\u3002<\/p>\n

\"\"<\/p>\n

2) \u7248\u672c\u534f\u5546\u5305\uff1a<\/strong>\u7248\u672c\u534f\u5546\u5305\u7684\u7ed3\u6784\u6bd4\u521d\u59cb\u5305\u66f4\u7b80\u5355\uff0c\u5982\u4e0a\u56fe\u6240\u793a\u3002\u548c\u524d\u9762\u4e00\u6837\uff0c\u7b2c\u4e00\u4f4d\u8868\u793a\u957f\u62a5\u5934\u683c\u5f0f\u3002 \u63a5\u4e0b\u6765\u7684\u4e03\u4f4d\u672a\u5728\u7248\u672c\u534f\u5546\u6570\u636e\u5305\u4e2d\u4f7f\u7528\uff0c\u5e76\u4e14\u53ef\u4ee5\u7531\u670d\u52a1\u5668\u8bbe\u7f6e\u4e3a\u4efb\u610f\u503c\u3002 \u4e3a\u4e86\u9075\u5b88 RFC 7983\uff0c\u672a\u4f7f\u7528\u4f4d\u7684\u6700\u9ad8\u6709\u6548\u4f4d (MSB) \u5e94\u8bbe\u7f6e\u4e3a 1\uff0c\u5c3d\u7ba1\u5b83\u662f\u7406\u8bba\u4e0a\u552f\u4e00\u53ef\u4ee5\u4e3a\u96f6\u7684 QUIC \u6570\u636e\u5305\u3002 \u7136\u800c\uff0c\u4ece\u653b\u51fb\u8005\u7684\u89d2\u5ea6\u6765\u770b\uff0c\u6574\u4e2a\u4e03\u4f4d\u5bf9\u4e8e\u4f7f\u7528 VNRF \u8fdb\u884c\u534f\u8bae\u5047\u5192\u662f\u4e0d\u53ef\u63a7\u7684\u3002 \u7248\u672c\u534f\u5546\u6570\u636e\u5305 (0x00000000) \u4e2d\u7684\u56db\u4e2a\u7248\u672c\u5b57\u8282\u90fd\u8bbe\u7f6e\u4e3a\u96f6\u3002 \u9664\u4e86 CID \u4e4b\u5916\uff0c\u552f\u4e00\u5269\u4e0b\u7684\u90e8\u5206\u662f\u4e00\u4e2a\u5305\u542b\u53d7\u652f\u6301\u7248\u672c\u6807\u8bc6\u7b26\u7684\u56db\u5b57\u8282\u503c\u6570\u7ec4\uff0c\u653b\u51fb\u8005\u65e0\u6cd5\u5f71\u54cd\u5b83\u3002<\/p>\n

\u540c\u6837\uff0c\u552f\u4e00\u5269\u4e0b\u7684\u90e8\u5206\u662f CID\u3002 \u867d\u7136 20 \u5b57\u8282\u7684\u53ef\u63a7\u91cf\u5bf9\u4e8e CMRF \u548c SIRF \u6765\u8bf4\u975e\u5e38\u6709\u9650\uff0c\u4f46 CID \u662f\u4e13\u95e8\u7528\u4e8e\u7248\u672c\u534f\u5546\u7684\u3002 \u4e3a\u4e86\u5141\u8bb8\u5728\u672a\u6765 QUIC \u7248\u672c\u7684\u5b9a\u4e49\u4e2d\u8fdb\u884c\u8c03\u6574\uff0cCID \u957f\u5ea6\u4e0d\u9650\u4e8e 20 \u4e2a\u5b57\u8282\u3002 \u672a\u6765\u7684 QUIC \u7248\u672c\u53ef\u4ee5\u4f7f\u7528\u516b\u4f4d\u957f\u5ea6\u6807\u8bc6\u7b26\u4e2d\u53ef\u7f16\u7801\u7684\u5168\u90e8\u957f\u5ea6\uff0c\u4ece\u800c\u5bfc\u81f4\u6bcf\u4e2a CID \u7684\u6700\u5927\u957f\u5ea6\u4e3a 255 \u5b57\u8282\u3002 \u901a\u8fc7\u4f7f\u7528\u6574\u4e2a\u957f\u5ea6\u8303\u56f4\u7684\u53ef\u80fd\u6027\uff0c\u53ef\u4ee5\u5b8c\u5168\u63a7\u5236 CID \u957f\u5ea6\u5b57\u8282\u3002\u653b\u51fb\u8005\u9700\u8981\u6743\u8861\u5b8c\u5168\u63a7\u5236\u8fd9\u4e9b\u5b57\u8282\u4e0e\u63a7\u5236\u66f4\u591a\u5b57\u8282\u7684\u4f18\u52bf\u3002<\/p>\n

\u7248\u672c\u534f\u5546\u6570\u636e\u5305\u7684\u53e6\u4e00\u4e2a\u72ec\u7279\u8981\u6c42\u662f\u670d\u52a1\u5668\u5fc5\u987b\u955c\u50cf\u5ba2\u6237\u7aef\u53d1\u9001\u7684 DCID \u548c SCID\uff08\u4e3a\u4e86\u5b83\u4eec\u7684\u76ee\u7684\u800c\u5207\u6362\uff09\u3002 \u56e0\u6b64\uff0c\u653b\u51fb\u8005\u6709\u80fd\u529b\u59cb\u7ec8\u5229\u7528\u4e24\u4e2a CID \u8fdb\u884c\u534f\u8bae\u5047\u5192\u3002\u8003\u8651\u5230\u6269\u5c55\u957f\u5ea6\u5b57\u8282\uff0c\u8fd9\u5bfc\u81f4\u6700\u591a 512 \u4e2a\u53ef\u63a7\u5b57\u8282\uff0c\u524d\u9762\u6709 5 \u4e2a\u5b57\u8282\uff0c\u540e\u9762\u81f3\u5c11\u6709 4 \u4e2a\u4e0d\u53ef\u63a7\u5b57\u8282\u3002<\/p>\n

C. \u53ef\u63a7\u653b\u51fb\u7a7a\u95f4\u5bf9\u6bd4<\/h3>\n

\u5206\u6790\u8868\u660e\uff0cVNRF \u662f\u53d1\u8d77\u5047\u5192\u653b\u51fb\u7684\u6700\u901a\u7528\u7684\u65b9\u5f0f\u3002 \u4e0b\u56fe\u663e\u793a\u4e86\u6240\u6709\u653b\u51fb\u6a21\u5f0f\u7684\u5b8c\u6574\u6bd4\u8f83\u3002SIRF\u3001SIRF+ \u548c CMRF\u5728\u5236\u4f5c\u6709\u6548\u8f7d\u8377\u65f6\u6709\u4e24\u4e2a\u4e3b\u8981\u969c\u788d\u3002 \u9996\u5148\uff0c20 \u5b57\u8282\u7684\u603b\u957f\u5ea6\uff08\u6216\u5728\u6781\u5c11\u6570\u60c5\u51b5\u4e0b\u4e3a 40 \u5b57\u8282\uff09\u4e0d\u8db3\u4ee5\u6a21\u4eff\u5927\u591a\u6570\u534f\u8bae\u6d88\u606f\u3002 \u5176\u6b21\uff0c\u975e\u5e38\u6709\u9650\u7684\u5b57\u8282\u8303\u56f4\u548c\u5bf9\u6570\u636e\u5305\u957f\u5ea6\u548c CID \u957f\u5ea6\u7684\u63a7\u5236\u4e0d\u8db3\u4ee5\u5728\u5047\u5192\u4e0a\u4e0b\u6587\u4e2d\u64cd\u4f5c\u6709\u610f\u4e49\u7684\u5b57\u8282\u3002 \u56e0\u6b64\u5f97\u51fa\u7ed3\u8bba\uff0cSIRF\u3001SIRF+ \u548c CMRF \u7684\u529f\u80fd\u660e\u663e\u53d7\u9650\u4e8e\u534f\u8bae\u5047\u5192\u653b\u51fb\u3002 \u5728\u5305\u62ec VNRF \u5728\u5185\u7684\u6240\u6709\u60c5\u51b5\u4e0b\uff0c\u653b\u51fb\u8005\u90fd\u5fc5\u987b\u7ed5\u8fc7\u524d\u51e0\u4e2a\u6807\u5934\u5b57\u8282\u3002 \u7136\u800c\uff0c\u4ec5\u6b64\u8fd8\u4e0d\u8db3\u4ee5\u9632\u6b62\u4f7f\u7528 VNRF \u8fdb\u884c\u5047\u5192\u3002<\/p>\n

\"\"<\/p>\n

D. \u57fa\u4e8eVNRF\u7684\u534f\u8bae\u5047\u5192\u653b\u51fb<\/h3>\n

\u4f5c\u4e3aPoC\uff0c\u672c\u8282\u7684\u76ee\u6807\u662f\u5236\u4f5c\u4e00\u4e2a\u6570\u636e\u62a5\uff0c\u8be5\u6570\u636e\u62a5\u53ef\u4ee5\u901a\u8fc7 VNRF \u53d1\u9001\u5230 DNS \u670d\u52a1\u5668\uff0c\u5e76\u89e6\u53d1\u5bf9\u57df\u540d tu-berlin.de \u7684\u53d7\u5bb3\u8005\u7684\u6709\u6548 DNS \u54cd\u5e94\u3002 \u9009\u62e9\u5047\u5192 DNS \u534f\u8bae\uff0c\u56e0\u4e3a\u5b83\u662f\u6700\u8457\u540d\u7684\u57fa\u4e8e UDP \u7684\u534f\u8bae\u4e4b\u4e00\uff0c\u5728\u5927\u591a\u6570\u7f51\u7edc\u4e2d\u5f97\u5230\u5e7f\u6cdb\u4f7f\u7528\u548c\u5141\u8bb8\uff0c\u5b83\u4e5f\u53ef\u4ee5\u7528\u4e8e\u7248\u672c\u534f\u5546\u6570\u636e\u5305\u9759\u6001\u90e8\u5206\u7684\u9650\u5236\u3002<\/p>\n

\u4e0b\u56fe\u663e\u793a\u4e86\u5e26\u6709 QUIC \u89e3\u91ca\uff08\u4e0a\uff09\u548c DNS \u89e3\u91ca\uff08\u4e0b\uff09\u7684\u624b\u5de5\u5236\u4f5c\u7684\u6570\u636e\u5305\u5b57\u8282\u7684\u5f00\u59cb\u3002 QUIC \u6570\u636e\u5305\u7684\u7b2c\u4e00\u4e2a\u5b57\u8282\u5c06\u4ee5 1 \u5f00\u5934\uff0c\u8868\u793a\u957f\u6807\u5934\uff0c\u540e\u8ddf\u4e03\u4f4d\u968f\u673a\u503c\u3002 \u8be5\u5b57\u8282\u52a0\u4e0a\u7248\u672c\u6807\u8bc6\u7b26\u7684\u7b2c\u4e00\u4e2a\u96f6\u5b57\u8282\u5c06\u88ab\u89e3\u91ca\u4e3a\u67e5\u8be2 ID\u3002 \u7248\u672c\u53f7\u7684\u4e0b\u4e24\u4e2a\u96f6\u5b57\u8282\u88ab\u89e3\u91ca\u4e3a RFC 1035\u4e2d\u5b9a\u4e49\u7684 DNS \u6807\u5fd7\u3002 \u4e24\u4e2a\u96f6\u5b57\u8282\u7684 DNS \u6807\u5fd7\u8868\u793a\u6807\u51c6\u67e5\u8be2\u6ca1\u6709\u88ab\u622a\u65ad\uff0c\u4e0d\u9700\u8981\u9012\u5f52\uff0c\u8fd9\u662f DNS \u67e5\u8be2\u7684\u6709\u6548\u6807\u5fd7\u8bbe\u7f6e\u3002 \u6700\u540e\u4e00\u4e2a\u7248\u672c\u5b57\u8282\u662f DNS \u67e5\u8be2\u4e2d\u5305\u542b\u7684\u4e3b\u673a\u67e5\u8be2\u6570\u91cf\u7684\u7b2c\u4e00\u4e2a\u5b57\u8282\u3002 \u8fd9\u4e2a\u9759\u6001\u96f6\u5b57\u8282\u9650\u5236\u4e86\u67e5\u8be2\u7684\u6700\u5927\u6570\u91cf\uff0c\u4f46\u5728\u5927\u591a\u6570\u60c5\u51b5\u4e0b\uff0c\u5269\u4f59\u7684\u7b2c\u4e8c\u4e2a\u5b57\u8282\u5c06\u7ef0\u7ef0\u6709\u4f59\u3002<\/p>\n

\"\"<\/p>\n

\u67e5\u8be2\u6570\u91cf\u7684\u7b2c\u4e8c\u4e2a\u5b57\u8282\u7531QUIC\u7248\u672c\u534f\u5546\u5305\u7684DCID\u957f\u5ea6\u51b3\u5b9a\u3002 \u5bf9\u4e8e\u6709\u6548\u8d1f\u8f7d\uff0c\u9009\u62e9\u4e86 7 \u7684\u503c\uff0c\u4ee5\u5c06\u67e5\u8be2\u4e2d\u6240\u9700\u4e3b\u673a\u540d\u7684\u6570\u91cf\u4fdd\u6301\u5728\u6700\u4f4e\u9650\u5ea6\uff0c\u540c\u65f6\u4ecd\u7136\u80fd\u591f\u8df3\u8fc7\u7b54\u6848\u7f16\u53f7 (Ans)\u3001\u6388\u6743\u8bb0\u5f55\u6570 (Auth) \u7684\u5269\u4f59\u5b57\u8282\u548c\u9644\u52a0\u8bb0\u5f55\u53f7 (Add)\u3002 \u5bf9\u4e8e\u6b63\u5e38\u67e5\u8be2\uff0cAns \u548c Auth \u5b57\u8282\u5e94\u8be5\u4e3a\u96f6\uff0c\u5e76\u4e14\u4e0d\u53ef\u7528\u4e8e\u6269\u5c55\u6709\u6548\u8d1f\u8f7d\u3002 \u5bf9\u4e8e\u6807\u51c6 DNS \u67e5\u8be2\uff0c\u9644\u52a0\u8bb0\u5f55\u7684\u6570\u91cf\u901a\u5e38\u4e3a\u96f6\u3002 \u7136\u800c\uff0c\u5c06\u4e24\u4e2a Add \u5b57\u8282\u8bbe\u7f6e\u4e3a 0x0001\uff0c\u4ee5\u5904\u7406 CID \u3001\u4e4b\u540e\u7684\u7248\u672c\u534f\u5546\u6570\u636e\u5305\u7684\u5269\u4f59\u7248\u672c\u53f7\u6807\u8bc6\u7b26\u3002<\/p>\n

\u9009\u62e9 DCID \u957f\u5ea6\u4e3a 7 \u65f6\uff0cSCID \u957f\u5ea6\u662f\u4e3b\u673a\u540d tuberlin.de \u7684\u7b2c\u4e00\u4e2a\u5b57\u8282\u3002 \u524d\u9762\u7684\u5b57\u8282 0x09 \u6807\u8bb0\u4e86\u4ee5\u4e0b\u57df\u7ea7\u522b\u7684\u5b57\u8282\u6570\u3002 \u6bcf\u4e2a\u57df\u7ea7\u522b\u7531\u4e00\u4e2a\u957f\u5ea6\u516b\u4f4d\u5b57\u8282\u8868\u793a\uff0c\u9876\u7ea7\u57df\u7531\u4e00\u4e2a\u96f6\u5b57\u8282\u7ec8\u6b62\u3002 \u5c06 SCID \u957f\u5ea6\u8bbe\u7f6e\u4e3a t (0x74) \u540e\uff0c\u8fd8\u6709 116 \u4e2a\u5269\u4f59\u7684 SCID \u5b57\u8282\u53ef\u7528\u4e8e\u5269\u4f59\u7684\u6709\u6548\u8f7d\u8377\u3002 \u6b64\u5927\u5c0f\u8db3\u4ee5\u5305\u542b\u5bf9 tuberlin.de \u7684\u6574\u4e2a\u67e5\u8be2\u3002<\/p>\n

\u5411\u6839\u57df\u6dfb\u52a0\u4e86\u516d\u4e2a\u8fdb\u4e00\u6b65\u7684\u67e5\u8be2\uff0c\u603b\u5171\u9700\u8981\u4e03\u4e2a\u67e5\u8be2\u3002 \u586b\u5145\u7684\u4e3b\u673a\u540d\u53ef\u4ee5\u662f\u4efb\u610f\u7684\uff0c\u53ea\u9700\u8981\u9075\u5b88 DNS \u89c4\u8303\u3002 \u6839\u57df\u6700\u9002\u5408\u672c\u6587\u9700\u6c42\uff0c\u56e0\u4e3a\u5b83\u5360\u7528\u7684\u8d1f\u8f7d\u7a7a\u95f4\u5c3d\u53ef\u80fd\u5c11\u3002 \u6dfb\u52a0\u90e8\u5206\u67e5\u8be2\u6761\u76ee\u8bbe\u7f6e\u4e3a\u57df\u6839 (0x00)\uff0c\u7c7b\u578b\u548c\u7c7b\u8bbe\u7f6e\u4e3a\u96f6\u3002 Add\u8868\u9879\u7684\u957f\u5ea6\u8bbe\u7f6e\u4e3a\u5269\u4f59SCID\u8f7d\u8377\u7684\u957f\u5ea6\u52a0\u4e0a\u7248\u672c\u534f\u5546\u5305\u4e2d\u7248\u672c\u6807\u8bc6\u6570\u7ec4\u7684\u957f\u5ea6\u3002 \u670d\u52a1\u5668\u901a\u544a\u7684\u7248\u672c\u6807\u8bc6\u7b26\u7684\u6570\u91cf\u662f\u9759\u6001\u7684\uff0c\u53ef\u4ee5\u901a\u8fc7\u5728\u6ca1\u6709\u6b3a\u9a97\u5730\u5740\u7684\u60c5\u51b5\u4e0b\u89e6\u53d1\u7248\u672c\u534f\u5546\u6765\u786e\u5b9a\u3002 \u6570\u7ec4\u7684\u957f\u5ea6\u4e58\u4ee5\u56db\uff0c\u56e0\u4e3a\u7248\u672c\u6807\u8bc6\u7b26\u59cb\u7ec8\u662f 4 \u5b57\u8282\u503c\u5e76\u4e14\u6dfb\u52a0\u6761\u76ee\u957f\u5ea6\u4ee5\u5b57\u8282\u4e3a\u5355\u4f4d\u7ed9\u51fa\u3002 Add \u6761\u76ee\u5f00\u5934\u548c\u7248\u672c\u6807\u8bc6\u7b26\u4e4b\u95f4\u7684\u5269\u4f59\u6709\u6548\u8d1f\u8f7d\u7a7a\u95f4\u7531\u968f\u673a\u5b57\u8282\u586b\u5145\u3002 \u901a\u8fc7\u4ee5\u63cf\u8ff0\u7684\u65b9\u5f0f\u5bf9\u5269\u4f59\u7684 QUIC \u6709\u6548\u8d1f\u8f7d\u8fdb\u884c\u7f16\u7801\uff0c\u9644\u52a0\u8bb0\u5f55\u5bf9 DNS \u670d\u52a1\u5668\u5c06\u6ca1\u6709\u610f\u4e49\u3002 \u7136\u800c\uff0c\u6574\u4e2a\u6570\u636e\u5305\u5b57\u8282\u90fd\u88ab\u8986\u76d6\u4e86\uff0c\u4f2a\u9020\u7684\u8bf7\u6c42\u662f\u4e00\u4e2a\u6709\u6548\u7684 DNS \u8bf7\u6c42 \u3002<\/p>\n

\"\"<\/p>\n

\u4e0a\u56fe\u663e\u793a\u4e86\u57fa\u4e8e VNRF \u7684\u534f\u8bae\u5047\u5192\u4e0e\u4e0a\u8ff0\u6709\u6548\u8f7d\u8377\u7684\u6570\u636e\u5305\u6355\u83b7\u3002 \u4e3a\u4e86\u8bc1\u660e\u4f2a\u9020\u6570\u636e\u5305\u7684\u6709\u6548\u6027\uff0c\u6574\u4e2a QUIC \u6d41\u91cf\uff08\u5de6\uff09\u5728 Wireshark \u4e2d\u89e3\u7801\u4e3a DNS\uff08\u53f3\uff09\u3002\u4e3a\u4e86\u6267\u884c\u771f\u6b63\u7684 DNS \u67e5\u8be2\uff0c\u6b3a\u9a97\u5730\u5740\u88ab\u8bbe\u7f6e\u4e3a Google DNS \u670d\u52a1\u5668 8.8.8.8:53\u3002\u56e0\u6b64\u4e0a\u56fea\u663e\u793a\u4e86\u6570\u636e\u5305\u7c7b\u578b\uff0c\u4e0a\u56feb\u663e\u793a\u4e86\u7b2c\u4e00\u4e2a\u62a5\u5934\u5b57\u8282\u548c\u7248\u672c\uff0c\u4e0a\u56fec\u663e\u793a\u4e86\u6709\u6548\u8f7d\u8377\u4e2d\u7684 CID\u3002 \u867d\u7136\u521d\u59cb\u6570\u636e\u5305\u662f\u683c\u5f0f\u9519\u8bef\u7684 DNS \u6570\u636e\u5305\uff0c\u4f46\u53f3\u4fa7\u7a97\u683c\u663e\u793a\u7248\u672c\u534f\u5546\u6570\u636e\u5305\u786e\u5b9e\u88ab\u89e3\u91ca\u4e3a\u5bf9 tu-berlin.de \u7684\u6709\u6548 DNS \u8bf7\u6c42\uff08\u4e0a\u56fed\uff09\uff0c\u5e76\u5bfc\u81f4\u5305\u542b IP \u5730\u5740\u7684\u6709\u6548 DNS \u54cd\u5e94\uff08\u4e0a\u56fee)\u3002<\/p>\n

\u8fd9\u79cd\u65b9\u6cd5\u53ef\u4ee5\u63a8\u5e7f\u5230\u5927\u591a\u6570\u57df\u540d\u3002 \u552f\u4e00\u6539\u53d8\u7684\u662f\u4e3b\u8981\u67e5\u8be2\u7684\u57df\u540d\uff0c\u5b83\u4f1a\u5f71\u54cd\u5269\u4f59\u8d1f\u8f7d\u7684\u957f\u5ea6\u3002 \u5982\u679c\u57df\u4ee5\u8f6c\u6362\u4e3a\u66f4\u5c0f\u5b57\u8282\uff08\u4f8b\u5982 0=0x30\uff09\u7684\u5b57\u7b26\u6216\u6570\u5b57\uff08ASCII \u683c\u5f0f\uff09\u5f00\u5934\uff0c\u5219\u957f\u5ea6\u4f1a\u53d7\u5230\u9650\u5236\u3002 \u4e5f\u5c31\u662f\u8bf4\uff0c\u5982\u679c\u603b\u957f\u5ea6\u8d85\u8fc7\u8fd9\u4e2a\u503c\uff0c\u6f0f\u6d1e\u5229\u7528\u5c06\u4e0d\u8d77\u4f5c\u7528\u3002 \u7136\u800c\uff0c\u53ef\u4ee5\u5047\u8bbe\u6ee1\u8db3\u8fd9\u4e9b\u7279\u6b8a\u6761\u4ef6\u7684\u57df\u540d\u662f\u76f8\u5f53\u7f55\u89c1\u7684\u3002<\/p>\n

\u5728\u653b\u51fb\u811a\u672c\u4e2d\u5305\u542b\u4e86\u901a\u7528\u7684PoC\uff0c\u5373\u4f2a\u9020\u5bf9\u4efb\u610f\u57df\u540d\u7684 DNS \u8bf7\u6c42\uff0c\u8be5\u811a\u672c\u53ef\u4ee5\u5728\u672c\u7814\u7a76\u5b58\u50a8\u5e93\uff08https:\/\/github.com\/yurigbur\/QUICforge<\/a>\uff09 \u4e2d\u627e\u5230\u3002 \u552f\u4e00\u5fc5\u987b\u624b\u52a8\u8bbe\u7f6e\u7684\u53c2\u6570\u662f\u88ab\u653b\u51fb\u7684 QUIC \u670d\u52a1\u5668\u652f\u6301\u7684\u7248\u672c\u6570\u3002 \u5bf9\u4e8e DNS \u8bf7\u6c42\u7684\u534f\u8bae\u5047\u5192\u4ee5\u8fd4\u56de\u57df\u7684 IP \u5730\u5740\uff0cDNS \u670d\u52a1\u5668\u5fc5\u987b\u662f\u9012\u5f52\u89e3\u6790\u5668\u6216\u5fc5\u987b\u5177\u6709\u76f8\u5e94\u7684\u7f13\u5b58\u57df\u6761\u76ee\u3002<\/p>\n

\u4e0a\u9762\u7684PoC\u8868\u660e\uff0c\u4f7f\u7528 VNRF \u7684\u534f\u8bae\u5047\u5192\u53ef\u4ee5\u4e0e\u73b0\u5b9e\u4e16\u754c\u7684\u534f\u8bae\u4e00\u8d77\u4f7f\u7528\u3002 \u4f8b\u5982\uff0c\u6b64\u7c7b DNS \u67e5\u8be2\u53ef\u80fd\u88ab\u7528\u4e8e\u51cf\u5c11 DNS \u7f13\u5b58\u4e2d\u6bd2\u653b\u51fb\u65f6\u95f4\u7684\u4e0d\u786e\u5b9a\u6027\u3002 \u7531\u4e8e\u672a\u53d1\u73b0\u7684\u9650\u5236\uff0c\u4e3a DNS \u4ee5\u5916\u7684\u5176\u4ed6\u534f\u8bae\u521b\u5efa\u6709\u6548\u8d1f\u8f7d\u53ef\u80fd\u9700\u8981\u5927\u91cf\u8c03\u8bd5\u548c\u624b\u52a8\u8c03\u6574\u624d\u80fd\u627e\u5230\u6709\u6548\u7684\u5b57\u8282\u7ec4\u5408\u3002 \u5982\u4e0a\u6240\u8ff0\uff0c\u5c06\u6709\u4e00\u4e9b\u65e0\u6cd5\u5728\u73b0\u6709\u8fb9\u754c\u5185\u5b9e\u73b0\u7684\u6709\u6548\u8f7d\u8377\u3002 \u5c3d\u7ba1\u5982\u6b64\uff0c\u901a\u8fc7\u591a\u6b21\u8fed\u4ee3\u548c\u521b\u9020\u6027\u5730\u5229\u7528\u76ee\u6807\u534f\u8bae\u7684\u89c4\u8303\uff0c\u53ef\u4ee5\u5236\u4f5c\u51fa\u8bb8\u591a\u6b63\u786e\u7684\u6570\u636e\u62a5\u3002 \u4f46\u662f\uff0cCMRF \u548c SIRF \u7684\u989d\u5916\u9650\u5236\u4f7f\u5b83\u4eec\u5728\u534f\u8bae\u5047\u5192\u7684\u4e0a\u4e0b\u6587\u4e2d\u4e0d\u53ef\u884c\u3002<\/p>\n

E. \u7f13\u89e3\uff1a\u964d\u4f4e\u53ef\u63a7\u6027<\/h3>\n

\u7531\u4e8e\u6267\u884c\u8bf7\u6c42\u4f2a\u9020\u7684\u80fd\u529b\u6e90\u4e8e\u534f\u8bae\u8bbe\u8ba1\uff0c\u56e0\u6b64\u6ca1\u6709\u5185\u5728\u673a\u5236\u53ef\u4ee5\u5b8c\u5168\u907f\u514d\u5b83\u3002\u672c\u7814\u7a76\u63d0\u51fa\u4ee5\u4e0b\u534f\u8bae\u66f4\u6539\uff0c\u4ee5\u964d\u4f4e CMRF\u3001SIRF \u548c VNRF \u6709\u6548\u8f7d\u8377\u7684\u53ef\u63a7\u6027\u3002<\/p>\n

1) CID Reflection\uff1a<\/strong>\u670d\u52a1\u5668\u5e94\u8be5\u603b\u662f\u5728\u63e1\u624b\u4e2d\u9009\u62e9\u4e00\u4e2a\u65b0\u7684CID\u4f5c\u4e3a\u81ea\u5df1\u7684DCID\uff0c\u8fd9\u4e0d\u9700\u8981\u6539\u53d8\u89c4\u8303\u3002 \u9664\u4e86\u90e8\u7f72New CID \u4e4b\u5916\uff0c\u670d\u52a1\u5668\u8fd8\u5e94\u968f\u673a\u9009\u62e9\u957f\u5ea6\u53c2\u6570\u4ee5\u964d\u4f4e\u6709\u6548\u8d1f\u8f7d\u653e\u7f6e\u7684\u53ef\u9884\u6d4b\u6027\u3002 \u957f\u5ea6\u5fc5\u987b\u4fdd\u6301\u5728\u6307\u5b9a\u7684\u9650\u5236\u5185\uff0c\u5e76\u4e14\u5fc5\u987b\u8db3\u591f\u5927\u4ee5\u786e\u4fdd CID \u6709\u8db3\u591f\u7684\u71b5\u3002<\/p>\n

\u5f53\u524d\u72b6\u6001\u4e0b\u7684\u7248\u672c\u534f\u5546\u673a\u5236\u5bf9\u534f\u8bae\u5047\u5192\u6784\u6210\u4e86\u6700\u5927\u7684\u5a01\u80c1\u3002 \u867d\u7136\u4e3a\u672a\u6765\u7248\u672c\u7684\u53d8\u5316\u63d0\u4f9b\u7a7a\u95f4\u662f\u53ef\u89c2\u7684\uff0c\u5373\u7248\u672c\u534f\u5546\u6570\u636e\u5305\u4e2d\u7684\u53ef\u53d8 CID \u957f\u5ea6\uff0c\u4f46\u8be5\u673a\u5236\u9700\u8981\u4e00\u4e9b\u4fee\u6539\u3002 \u53ef\u4ee5\u4f9d\u9760\u5220\u9664\u5ba2\u6237\u7aef\u63d0\u4f9b\u7684 DCID \u7684\u955c\u50cf\u3002\u867d\u7136\u8fd9\u5c06\u53ef\u63a7\u5b57\u8282\u6570\u51cf\u534a\uff0c\u4f46\u5e76\u4e0d\u80fd\u5b8c\u5168\u7f13\u89e3\u53ef\u63a7\u5b57\u8282\u7684\u95ee\u9898\u3002 \u56e0\u6b64\uff0c\u9664\u4e86\u4e0d\u5bf9\u5ba2\u6237\u7aef\u63d0\u51fa\u7684DCID\u8fdb\u884c\u955c\u50cf\u4e4b\u5916\uff0c\u8fd8\u8fdb\u4e00\u6b65\u63d0\u51fa\u4e86\u4ee5\u4e0b\u7684\u65b9\u6848\u3002<\/p>\n

2) \u57fa\u4e8e\u54c8\u5e0c\u7684 CID \u751f\u6210\uff1a<\/strong>\u5bf9\u4e8e\u5269\u4f59\u7684\u5ba2\u6237\u7aef\u63a7\u5236\u7684 CID\uff0c\u672c\u6587\u63d0\u51fa\u4e86\u4e00\u79cd\u673a\u5236\uff0c\u4f7f\u670d\u52a1\u5668\u80fd\u591f\u63a7\u5236 DCID \u7684\u5ba2\u6237\u7aef\u63a7\u5236\u5b57\u8282\u3002 \u670d\u52a1\u5668\u53ef\u4ee5\u59cb\u7ec8\uff08\u6216\u81f3\u5c11\u5bf9\u4e8e\u672a\u9a8c\u8bc1\u7684\u8def\u5f84\uff09\u53cd\u6620\u65b0\u63d0\u8bae\u7684 CID \u7684\u5355\u5411\uff08\u6563\u5217\uff09\u51fd\u6570\u7684\u8fd4\u56de\u503c\u3002 \u56e0\u6b64\uff0c\u5ba2\u6237\u7aef\u4ecd\u7136\u53ef\u4ee5\u5f71\u54cd CID \u7684\u201c\u968f\u673a\u6027\u201d\uff0c\u4f46\u65e0\u6cd5\u518d\u63a7\u5236\u5185\u5bb9\u3002\u4e3a\u4e86\u5229\u7528\u8fd9\u79cd\u5b89\u5168\u503c\u8fdb\u884c\u534f\u8bae\u5047\u5192\uff0c\u9700\u8981\u653b\u51fb\u8005\u8ba1\u7b97\u6709\u6548\u8d1f\u8f7d\u7684\u9006\uff0c\u8fd9\u5bf9\u4e8e\u5355\u5411\u51fd\u6570\u6765\u8bf4\u662f\u4e0d\u53ef\u884c\u7684\u3002<\/p>\n

\u7136\u800c\uff0c\u8be5\u673a\u5236\u53ef\u80fd\u4e0e\u57fa\u4e8e CID \u7684\u8def\u7531\u548c\u8d1f\u8f7d\u5e73\u8861\u4ee5\u53ca\u5ba2\u6237\u7aef\u63a7\u5236\u5b83\u4eec\u7684\u80fd\u529b\u76f8\u51b2\u7a81\u3002 \u90e8\u7f72\u53ef\u80fd\u9700\u8981\u957f\u5ea6\u4e00\u81f4\u6216 CID \u7684\u67d0\u4e9b\u90e8\u5206\u5c06\u6570\u636e\u5305\u8def\u7531\u5230\u6b63\u786e\u7684\u7aef\u70b9\u3002 \u5e94\u8be5\u907f\u514d\u4f9d\u8d56\u9759\u6001\u957f\u5ea6\u6216\u90e8\u5206 CID \u7684\u673a\u5236\uff0c\u56e0\u4e3a\u5b83\u4eec\u66f4\u5bb9\u6613\u5173\u8054\u8fde\u63a5\u3002 \u5bf9\u4e8e\u6563\u5217 CID\uff0c\u5ba2\u6237\u7aef\u8fd8\u53ef\u4ee5\u9884\u5148\u8ba1\u7b97\u503c\u5e76\u5c06\u5176\u7528\u4e8e\u67d0\u4e9b\u8def\u7531\u7b56\u7565\u3002<\/p>\n

3) \u5c4f\u853d\uff1a<\/strong>\u53e6\u4e00\u79cd\u5c06\u63a7\u5236\u6743\u4ea4\u7ed9\u5ba2\u6237\u7aef\u7684\u65b9\u6cd5\u662f\u5c4f\u853d\u673a\u5236\u3002 Websockets\u4e2d\u7684\u5ba2\u6237\u7aef\u5230\u670d\u52a1\u5668\u5c4f\u853d\u4f7f\u7528\u4e86\u7c7b\u4f3c\u7684\u65b9\u6cd5\u3002 QUIC \u6807\u5934\u9700\u8981\u901a\u8fc7\u5305\u542b\u5c4f\u853d\u503c\uff08\u4f8b\u5982 32 \u4f4d\uff09\u7684\u5b57\u6bb5\u8fdb\u884c\u6269\u5c55\u3002 \u6b64\u63a9\u7801\u503c\u7531\u670d\u52a1\u5668\u968f\u673a\u751f\u6210\uff0c\u6574\u4e2a\u5269\u4f59\u6807\u5934\u4e0e\u4ece\u8be5\u503c\u751f\u6210\u7684\u63a9\u7801\u8fdb\u884c\u5f02\u6216\u8fd0\u7b97\u3002 \u4f7f\u7528\u8fd9\u79cd\u5c4f\u853d\u7b56\u7565\uff0c\u5ba2\u6237\u7aef\u4ecd\u7136\u53ef\u4ee5\u9009\u62e9\u670d\u52a1\u5668\u53cd\u6620\u7684 DCID\uff0c\u5e76\u4e14\u5982\u679c\u9700\u8981\uff0c\u5b83\u53ef\u4ee5\u6839\u636e\u8be5\u503c\u8fdb\u884c\u8def\u7531\u548c\u8d1f\u8f7d\u5e73\u8861\u3002 \u7136\u800c\u7531\u4e8e\u670d\u52a1\u5668\u9009\u62e9\u4e86\u5c4f\u853d\uff0c\u56e0\u6b64\u8bf7\u6c42\u4f2a\u9020\u653b\u51fb\u7684\u6709\u6548\u8d1f\u8f7d\u4e0d\u518d\u7531\u653b\u51fb\u8005\u63a7\u5236\u3002 \u76ee\u6807\u63a5\u6536\u5230\u7684\u6570\u636e\u5c06\u968f\u673a\u51fa\u73b0\u3002<\/p>\n

0x04 \u6d41\u91cf\u653e\u5927\u653b\u51fb<\/h2>\n

\u8bf7\u6c42\u4f2a\u9020\u653b\u51fb\u7684\u53e6\u4e00\u4e2a\u5f71\u54cd\u662f\u6d41\u91cf\u653e\u5927\uff0c\u5982\u679c\u4f2a\u9020\u7684\u6570\u636e\u5305\u5927\u4e8e\u653b\u51fb\u8005\u53d1\u9001\u7684\u6570\u636e\u5305\uff0c\u5c31\u4f1a\u51fa\u73b0\u5b9e\u65bd\u6d41\u91cf\u653e\u5927\u653b\u51fb\u7684\u6761\u4ef6\u3002 \u8fd9\u79cd\u653e\u5927\u653b\u51fb\u662f\u901a\u8fc7\u5e26\u5bbd\u653e\u5927\u56e0\u5b50\uff08 Bandwidth Amplification Factor\uff0cBAF\uff09\u6765\u8861\u91cf\u7684\uff0c\u901a\u5e38\u8ba1\u7b97\u5982\u4e0b\uff1a<\/p>\n

\"\"<\/p>\n

QUIC \u534f\u8bae\u6307\u5b9a\u4e86\u4e00\u4e2a\u53cd\u653e\u5927\u7684\u9650\u5236\uff0c\u8981\u6c42\u5728\u4efb\u4f55\u672a\u7ecf\u9a8c\u8bc1\u7684\u8def\u5f84\u4e0a\u53d1\u9001\u7684\u6570\u636e\u91cf\u4e0d\u5f97\u8d85\u8fc7\u63a5\u6536\u6570\u636e\u91cf\u7684\u4e09\u500d\u3002 \u4e3a\u4e86\u80fd\u591f\u76f4\u63a5\u6bd4\u8f83\u901a\u8fc7\u8bf7\u6c42\u4f2a\u9020\u7684\u653e\u5927\u4e0e QUIC \u4e2d\u7684\u6b64\u9650\u5236\uff0c\u5b9a\u4e49\u5e76\u4f7f\u7528\u8def\u5f84\u653e\u5927\u56e0\u5b50 (Path Amplification Factor,PAF) \u8fdb\u884c\u6d4b\u91cf\uff1a<\/p>\n

\"\"<\/p>\n

\u5bf9\u4e8e SIRF\uff0cPAF \u503c\u7c7b\u4f3c\u4e8e\u7ecf\u5178\u7684 BAF \u5b9a\u4e49\u3002 \u5bf9\u4e8eCMRF\uff0c\u653b\u51fb\u8005\u5728\u63e1\u624b\u8fc7\u7a0b\u4e2d\u53d1\u9001\u7684\u6570\u636e\u5305\u4e0d\u5728PAF\u4e2d\u8ba1\u7b97\u3002 \u8981\u83b7\u5f97\u76f8\u5e94\u7684 BAF\uff0c\u5fc5\u987b\u5c06\u8fd9\u4e9b\u5b57\u8282\u6dfb\u52a0\u5230\u9664\u6570\u3002<\/p>\n

A. \u6269\u589e\u5411\u91cf<\/h3>\n

1) \u6700\u5c0f\u8def\u5f84\u8981\u6c42\uff1aQUIC<\/strong>\u89c4\u8303\u4e2d\u8981\u6c42\u5982\u679c\u7f51\u7edc\u8def\u5f84\u4e0d\u80fd\u652f\u6301\u81f3\u5c11 1200 \u5b57\u8282\u7684\u6700\u5927\u6570\u636e\u62a5\u5927\u5c0f\uff0c\u5219\u4e0d\u5f97\u4f7f\u7528 QUIC\u3002 \u56e0\u6b64\uff0c\u521d\u59cb\u6570\u636e\u5305\u548c\u5305\u542b PATH_CHALLENGES \u7684\u6570\u636e\u5305\u5e94\u586b\u5145\u5230 1200 \u5b57\u8282\u4ee5\u6267\u884c\u8def\u5f84\u6700\u5927\u4f20\u8f93\u5355\u5143\u53d1\u73b0 (PMTUD)\uff0c\u786e\u4fdd\u8def\u5f84\u652f\u6301\u8db3\u591f\u5927\u4ee5\u652f\u6301 QUIC \u7684\u6570\u636e\u62a5\u3002 \u5c3d\u7ba1\u8981\u6c42\u80fd\u591f\u4f20\u8f93 1200 \u5b57\u8282\u7684\u6570\u636e\u62a5\uff0c\u4f46\u5728\u8fde\u63a5\u671f\u95f4\u67d0\u4e9b\u6570\u636e\u5305\u5b9e\u9645\u4e0a\u53ef\u80fd\u975e\u5e38\u5c0f\u3002 \u53ef\u4ee5\u89c2\u5bdf\u5230\uff0c\u4ec5\u5305\u542b\u4e00\u4e2a QUIC \u6570\u636e\u5305\u548c\u4e00\u4e2a ACK \u5e27\u7684\u6570\u636e\u62a5\u5c0f\u81f3 73 \u5b57\u8282\u3002 \u5982\u679c\u670d\u52a1\u5668\u5728\u65b0\u8def\u5f84\u4e0a\u4e3a\u6b64\u7c7b\u6570\u636e\u62a5\u53d1\u9001 1200 \u5b57\u8282\u7684\u586b\u5145\u8def\u5f84\u8d28\u8be2\uff0c\u5219 BAF \u5c06\u4e3a 1200\/73 \u2248 16.44\uff0c\u8fd9\u8fdd\u53cd\u4e86\u53cd\u653e\u5927\u89c4\u5219\u3002<\/p>\n

\u5982\u679c\u5728 PMTUD \u8981\u6c42\u4e0b\u65e0\u6cd5\u6ee1\u8db3\u6297\u653e\u5927\u9650\u5236\uff0cQUIC \u89c4\u8303\u5141\u8bb8\u5728\u6ca1\u6709\u6216\u66f4\u5c11\u586b\u5145\u7684\u60c5\u51b5\u4e0b\u8fdb\u884c\u9996\u6b21\u521d\u59cb\u8def\u5f84\u9a8c\u8bc1\u3002 \u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u5728\u7ec8\u7aef\u662f\u5408\u6cd5\u8fc1\u79fb\u5ba2\u6237\u7aef\u65f6\uff0c\u4e00\u65e6\u6210\u529f\u9a8c\u8bc1\u4e86\u8def\u5f84\u5c31\u5fc5\u987b\u6267\u884c\u989d\u5916\u7684\u8def\u5f84\u9a8c\u8bc1\u3002 \u7b2c\u4e8c\u4e2a\u586b\u5145\u9a8c\u8bc1\u786e\u4fdd PMTUD \u8981\u6c42\u4e5f\u5f97\u5230\u6ee1\u8db3\u3002\u9664\u4e86\u586b\u5145\u8981\u6c42\u5916\uff0c\u8fd8\u5141\u8bb8\u670d\u52a1\u5668\u5728\u9a8c\u8bc1\u5730\u5740\u4e4b\u524d\u5c31\u5df2\u7ecf\u5f00\u59cb\u5411\u65b0\u7aef\u70b9\u53d1\u9001\u6570\u636e\u3002 \u5982\u679c\u68c0\u67e5\u4e0d\u6b63\u786e\uff0c\u53d1\u9001\u7684\u6570\u636e\u4e5f\u53ef\u80fd\u8fdd\u53cd\u53cd\u653e\u5927\u9650\u5236\u3002<\/p>\n

2) \u4e0d\u5e73\u8861\u7684\u63e1\u624b\u5927\u5c0f\uff1a<\/strong>\u5bf9\u4e8e SIRF \u548c VNRF\uff0c\u63e1\u624b\u673a\u5236\u53ef\u80fd\u88ab\u6ee5\u7528\u3002 \u670d\u52a1\u5668\u5fc5\u987b\u5728\u6536\u5230\u8fde\u63a5\u5c1d\u8bd5\u540e\u81f3\u5c11\u53d1\u9001\u4e00\u4e2a\u5ba2\u6237\u7aef\u521d\u59cb\u6570\u636e\u5305\uff08\u6216\u91cd\u8bd5\uff09\u3002 \u670d\u52a1\u5668\u6240\u9700\u7684 TLS \u53c2\u6570\uff08\u4f8b\u5982\u8bc1\u4e66\uff09\u901a\u5e38\u5927\u4e8e\u5ba2\u6237\u7aef\u7684\u53c2\u6570\u3002 \u5982\u679c\u751f\u6210\u7684\u6570\u636e\u62a5\u5927\u4e8e 3600 \u5b57\u8282\uff0c\u5219\u5373\u4f7f\u5c06\u5ba2\u6237\u7aef\u521d\u59cb\u6570\u636e\u5305\u586b\u5145\u5230 1200 \u5b57\u8282\u7684\u5927\u5c0f\uff0c\u4e5f\u65e0\u6cd5\u9075\u5b88\u53cd\u653e\u5927\u9650\u5236\u3002 \u89c4\u8303\u5e76\u6ca1\u6709\u660e\u786e\u63d0\u5230\u4e00\u822c\u5e94\u8be5\u5982\u4f55\u89e3\u51b3\u8fd9\u79cd\u60c5\u51b5\u3002 \u5b83\u53ea\u8bf4\u660e\u5728\u63e1\u624b\u671f\u95f4\uff0c\u5fc5\u987b\u9075\u5b88\u53cd\u653e\u5927\u9650\u5236\u3002 \u8003\u8651\u5230\u8fd9\u4e2a\u95ee\u9898\u7684\u5ba2\u6237\u7aef\u5b9e\u73b0\u53ef\u4ee5\u5728\u521d\u59cb\u6570\u636e\u5305\u4e2d\u5305\u542b\u8865\u5145\u586b\u5145\uff0c\u4ee5\u589e\u52a0\u5141\u8bb8\u670d\u52a1\u5668\u53d1\u9001\u7684\u6570\u636e\u91cf\u3002 \u7531\u4e8e\u5185\u5bb9\u6709\u9650\uff0c\u91cd\u8bd5\u548c\u7248\u672c\u534f\u5546\u6570\u636e\u5305\u603b\u662f\u5c0f\u4e8e\u5ba2\u6237\u7aef\u521d\u59cb\u6570\u636e\u5305\uff0c\u4e0d\u80fd\u7528\u4e8e\u653e\u5927\u3002<\/p>\n

3\uff09\u53ef\u9760\u6027\uff1a<\/strong>\u901a\u8fc7QUIC\u7684\u53ef\u9760\u6027\u673a\u5236\uff0c\u6240\u5f15\u5165\u7684\u51b2\u7a81\u7684\u5f71\u54cd\u4f1a\u88ab\u6076\u5316\u3002 \u4e3a\u786e\u4fdd\u8def\u5f84\u6311\u6218\u6210\u529f\uff0c\u670d\u52a1\u5668\u53ef\u80fd\u4f1a\u7a81\u7136\u53d1\u9001\u591a\u4e2a PATH_CHALLENGE \u5e27\u3002 \u5982\u679c\u6ca1\u6709\u6536\u5230\u8def\u5f84\u54cd\u5e94\uff0c\u670d\u52a1\u5668\u53ef\u80fd\u4f1a\u91cd\u65b0\u53d1\u9001\u8def\u5f84\u6311\u6218\u3002 \u5982\u679c\u6240\u6709\u8fd9\u4e9b\u6570\u636e\u5305\u90fd\u88ab\u586b\u5145\uff0c\u653e\u5927\u95ee\u9898\u5c31\u4f1a\u589e\u52a0\u3002<\/p>\n

\u5bf9\u4e8e\u8fde\u63a5\u7684\u6b63\u5e38\u672a\u786e\u8ba4 QUIC \u6570\u636e\u5305\uff0c\u6709\u8d85\u65f6\u548c\u91cd\u8bd5\u673a\u5236\uff08\u4e0d\u8981\u4e0e QUIC \u7684\u6807\u8bb0\u5316\u91cd\u8bd5\u6df7\u6dc6\uff09\u3002 \u5fc5\u987b\u4e3a\u670d\u52a1\u5668\u521d\u59cb\u6570\u636e\u5305\u7981\u7528\u6b64\u673a\u5236\uff0c\u56e0\u4e3a\u5b83\u4eec\u51e0\u4e4e\u603b\u662f\u4e0e\u53cd\u653e\u5927\u9650\u5236\u51b2\u7a81\u3002 \u4e3a\u4e86\u907f\u514d\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\u51fa\u73b0\u6b7b\u9501\uff0c\u5ba2\u6237\u7aef\u5fc5\u987b\u5b9e\u65bd\u63a2\u6d4b\u8d85\u65f6 (PTO)\uff0c\u4e4b\u540e\u5b83\u5fc5\u987b\u53d1\u9001\u53e6\u4e00\u6761\u521d\u59cb\u6d88\u606f\u3002 \u7136\u800c\u5982\u679c\u670d\u52a1\u5668\u6267\u884c\u91cd\u8bd5\uff0c\u653b\u51fb\u8005\u53ef\u4ee5\u653e\u5927\u4e0d\u5e73\u8861\u63e1\u624b\u5927\u5c0f\u7684\u95ee\u9898\u3002<\/p>\n

B. \u53cd\u653e\u5927\u673a\u5236<\/h3>\n

\u539f\u5219\u4e0aQUIC \u89c4\u8303\u5305\u542b\u6240\u6709\u5fc5\u8981\u7684\u7ec6\u8282\uff0c\u4ee5\u9632\u6b62\u5982\u4e0a\u6240\u8ff0\u7684\u6d41\u91cf\u653e\u5927\u653b\u51fb\u3002 \u7136\u800c\uff0cPMTUD \u548c\u53cd\u653e\u5927\u9650\u5236\u4e4b\u95f4\u7684\u51b2\u7a81\u53ef\u80fd\u4f1a\u6210\u4e3a\u4e00\u4e2a\u95ee\u9898\u3002 \u5efa\u8bae\u5b98\u65b9\u6309\u5982\u4e0b\u65b9\u5f0f\u91cd\u65b0\u7ec4\u7ec7\u548c\u8c03\u6574 QUIC\u89c4\u8303\uff1a<\/p>\n

1\uff09\u51cf\u5c11\u8def\u5f84\u9a8c\u8bc1\u548c\u63e1\u624b\u671f\u95f4\u6240\u9700\u51b3\u7b56\u7684\u6570\u91cf\uff1a\u4f8b\u5982\uff0c\u8def\u5f84\u9a8c\u8bc1\u603b\u662f\u53ef\u4ee5\u5206\u4e24\u6b65\u6267\u884c\u3002 \u7b2c\u4e00\u4e2a\u6570\u636e\u5305\u5c06\u5728\u6ca1\u6709\u586b\u5145\u7684\u60c5\u51b5\u4e0b\u9a8c\u8bc1\u8def\u5f84\uff0c\u800c\u7b2c\u4e8c\u4e2a\u6570\u636e\u5305\u5c06\u4ec5\u901a\u8fc7\u5305\u542b\u4e00\u4e2a PADDING \u5e27\u6765\u786e\u4fdd PMTUD \u9650\u5236\u3002<\/p>\n

2\uff09\u9f13\u52b1\u5ba2\u6237\u7aef\u5b9e\u73b0\u5c06\u586b\u5145\u5305\u542b\u5230\u521d\u59cb\u6570\u636e\u5305\u4e2d\uff1a\u5982\u679c\u670d\u52a1\u5668\u65e0\u6cd5\u5728\u653e\u5927\u9650\u5236\u5185\u54cd\u5e94\u5ba2\u6237\u7aef\u521d\u59cb\u6570\u636e\u5305\uff0c\u5219\u5b83\u5e94\u8be5\u6709\u4e49\u52a1\u53d1\u9001\u91cd\u8bd5\u4ee5\u9996\u5148\u9a8c\u8bc1\u8def\u5f84\u3002<\/p>\n

\u5173\u4e8e\u63e1\u624b\u4e2d\u672a\u9a8c\u8bc1\u7684\u8def\u5f84\uff0c\u5982 SIRF \u4e2d\u6240\u5229\u7528\u7684\u90a3\u6837\uff0c\u89c4\u8303\u63d0\u5230\u91cd\u8bd5\u673a\u5236\u662f\u4e00\u79cd\u6709\u6548\u7684\u4fdd\u62a4\u63aa\u65bd\uff0c\u53ef\u9632\u6b62\u5728\u670d\u52a1\u5668\u4e0a\u4e0d\u5fc5\u8981\u5730\u8ba1\u7b97\uff08\u6602\u8d35\u7684\uff09\u5bc6\u94a5\u4ea4\u6362\u4fe1\u606f\u3002 \u867d\u7136\u8bc4\u4f30\u652f\u6301\u8fd9\u4e00\u8bf4\u6cd5\uff0c\u5e76\u4e14\u5efa\u8bae\u4f7f\u7528\u5982\u4e0a\u6240\u8ff0\u7684\u91cd\u8bd5\uff0c\u4f46\u8fd9\u79cd\u673a\u5236\u5728\u5927\u591a\u6570\u60c5\u51b5\u4e0b\u90fd\u4e0d\u662f\u66f4\u53ef\u53d6\u7684\uff0c\u56e0\u4e3a\u5b83\u4e3a\u63e1\u624b\u5f15\u5165\u4e86\u53e6\u4e00\u4e2a RTT\u3002<\/p>\n

0x05 \u8bc4\u4f30<\/h2>\n

\u5728\u672c\u8282\u4e2d\u8bc4\u4f30\u4e86\u4e00\u7cfb\u5217\u5f00\u6e90 QUIC \u5b9e\u73b0\uff0c\u7279\u522b\u662f\u8bc4\u4f30\u4e86\u5b83\u4eec\u5bf9\u6982\u8ff0\u7684\u653b\u51fb\u5411\u91cf\u7684\u8106\u5f31\u6027\uff0c\u4ece\u800c\u8bc4\u4f30\u5b83\u4eec\u662f\u5426\u5145\u5206\u9075\u5b88\u89c4\u8303\u3002 \u9996\u5148\u4ecb\u7ecd\u653b\u51fb\u8bbe\u7f6e\uff08\u4e0b\u56fe\uff09\u5e76\u9488\u5bf9\u6bcf\u79cd\u653b\u51fb\u6280\u672f\u8bc4\u4f30\u6bcf\u4e2a\u670d\u52a1\u5668\u5f00\u6e90\u5b9e\u73b0\u7684\u6f0f\u6d1e\u3002 \u5bf9\u4e8e\u6709\u653e\u5927\u95ee\u9898\u7684\u670d\u52a1\u5668\uff0c\u5bf9\u5176 PAF \u503c\u8fdb\u884c\u4e86\u8be6\u7ec6\u5206\u6790\u3002<\/p>\n

\"\"<\/p>\n

A. \u670d\u52a1\u5668\u9009\u62e9<\/h3>\n

\u672c\u7814\u7a76\u4ec5\u4f7f\u7528\u5f00\u6e90\u8f6f\u4ef6\uff0c\u56e0\u4e3a\u7406\u89e3\u5e94\u7528\u7a0b\u5e8f\u903b\u8f91\u7684\u80fd\u529b\u5bf9\u4e8e\u68c0\u6d4b\u6f0f\u6d1e\u548c\u4e86\u89e3\u73b0\u6709\u5b89\u5168\u529f\u80fd\u81f3\u5173\u91cd\u8981\u3002 \u8fd9\u4e9b\u5f00\u6e90\u5b9e\u73b0\u90fd\u5217\u5728 QUIC \u5de5\u4f5c\u7ec4\u7684 GitHub\uff08https:\/\/github.com\/quicwg\/base-drafts\/wiki\/Implementations<\/a>\uff09\u4e2d\u3002 \u5728\u8bc4\u4f30\u4e2d\u8003\u8651\u4e86\u6240\u6709\u5217\u51fa\u7684\u652f\u6301 QUIC \u7248\u672c 1 \u7684\u5f00\u6e90\u5b9e\u73b0\u3002\u4e0d\u5e78\u7684\u662f\uff0c\u7531\u4e8e\u4e92\u64cd\u4f5c\u6027\u95ee\u9898\u548c\u5b9e\u73b0\u4e2d\u7684\u9519\u8bef\uff0c\u4e0d\u5f97\u4e0d\u6392\u9664\u4e00\u4e9b\u3002 \u5176\u4f59 13 \u4e2a\u88ab\u96c6\u6210\u5230\u653b\u51fb\u8bbe\u7f6e\u4e2d\uff0c\u5982\u4e0b\u6240\u8ff0\u3002 \u4e00\u4e9b\u5f00\u6e90\u5b9e\u73b0\u662f\u5b9e\u9a8c\u6027\u7684\u6216\u7531\u4e00\u4e2a\u5c0f\u56e2\u961f\u7ef4\u62a4\uff0c\u8fd9\u4e0e\u5176\u4ed6\u4e00\u4e9b\u7531\u62e5\u6709\u5927\u578b\u56e2\u961f\u7684\u5927\u516c\u53f8\u5f00\u53d1\u548c\u652f\u6301\u7684\u9879\u76ee\u5f62\u6210\u9c9c\u660e\u5bf9\u6bd4\u3002 \u6b64\u5916\uff0c\u6709\u4e9b\u5f00\u6e90\u5b9e\u73b0\u5e76\u4e0d\u662f\u4e3a\u4e86\u5728\u751f\u4ea7\u4e2d\u90e8\u7f72\u800c\u5f00\u53d1\u7684\u3002 \u5c3d\u7ba1\u5982\u6b64\uff0c\u786e\u5b9e\u5305\u62ec\u4e86\u6240\u6709\u7c7b\u522b\u7684\u8f6f\u4ef6\uff0c\u56e0\u4e3a\u5b83\u4eec\u90fd\u9075\u5b88\u89c4\u8303\u5f88\u91cd\u8981\u3002 \u7528\u4e8e\u6bcf\u4e2a\u670d\u52a1\u5668\u7684\u7248\u672c\/\u63d0\u4ea4\u5728\u5404\u81ea\u7684 docker \u5bb9\u5668\u4e2d\u53ef\u7528\u3002<\/p>\n

B. \u8bbe\u7f6e\u548c\u653b\u51fb\u5b9e\u65bd<\/h3>\n

\u5728\u5ba2\u6237\u7aef\u865a\u62df\u673a (VM) \u4e0a\u4f7f\u7528\u81ea\u5b9a\u4e49 Python \u653b\u51fb\u811a\u672c\uff0c\u8be5\u811a\u672c\u5229\u7528\u5e26\u6709 NetfilterQueue \u548c scapy \u5e93\u7684 netfilter \u961f\u5217\u6765\u62e6\u622a\u548c\u6b3a\u9a97\u6570\u636e\u5305\u3002 \u8fd9\u79cd\u65b9\u6cd5\u5141\u8bb8\u5728\u4e0d\u6539\u53d8\u6e90\u4ee3\u7801\u7684\u60c5\u51b5\u4e0b\u4e3a\u4efb\u610f QUIC \u5ba2\u6237\u7aef\u6b3a\u9a97\u6570\u636e\u5305\u3002 \u4e3a\u4e86\u901a\u8fc7 QUIC \u8fdb\u884c\u901a\u4fe1\uff0c\u653b\u51fb\u811a\u672c\u4e3b\u8981\u4f7f\u7528\u7248\u672c 3.0.4 \u4e2d\u7684 lsquic HTTP \u5ba2\u6237\u7aef\u3002 \u56e0\u4e3a\u5b83\u4e3a\u4e0d\u540c\u7684\u8bbe\u7f6e\u63d0\u4f9b\u4e86\u5404\u79cd\u547d\u4ee4\u884c\u9009\u9879\u3002<\/p>\n

\u5c3d\u7ba1 VNRF \u9700\u8981\u8f83\u5c11\u7684\u4e92\u64cd\u4f5c\u6027\u8bbe\u7f6e\uff0c\u4f46\u9700\u8981\u5bf9\u5ba2\u6237\u7aef\u5b9e\u73b0\u8fdb\u884c\u4e00\u4e9b\u989d\u5916\u7684\u8c03\u6574\u3002 \u9664\u4e86\u96c6\u6210\u4e00\u4e2a\u4e0d\u5b58\u5728\u7684\u7248\u672c\uff08\u5728\u4f8b\u5b50\u4e2d\u4e3a 0x13371337\uff09\u4e4b\u5916\uff0c\u8fd8\u5fc5\u987b\u5b9e\u73b0 CID \u7684\u6269\u5c55\uff0c\u6700\u5927\u957f\u5ea6\u4e3a 255 \u5b57\u8282\u3002\u4e0a\u8ff0\u8c03\u6574\u5df2\u7ecf\u5b9e\u65bd\u5230 aioquic \u4e2d\uff0c\u56e0\u4e3a Python \u672c\u5730\u5904\u7406\u7f13\u51b2\u533a\u957f\u5ea6\uff0c\u8fd9\u4e0e\u57fa\u4e8e C \u7684 lsquic \u5b9e\u65bd\u76f8\u6bd4\u6700\u5927\u9650\u5ea6\u5730\u51cf\u5c11\u4e86\u7f16\u7a0b\u5de5\u4f5c\u3002\u8bf7\u53c2\u9605\u672c\u7814\u7a76GitHub \u5b58\u50a8\u5e93\u4ee5\u83b7\u53d6\u6709\u5173\u653b\u51fb\u8bbe\u7f6e\u548c\u5b9e\u65bd\u7684\u66f4\u591a\u4fe1\u606f\u3002<\/p>\n

\u5728\u670d\u52a1\u5668 VM \u4e0a\uff0c\u9009\u62e9\u5728\u5bb9\u5668\u5316 Docker \u8bbe\u7f6e\u4e2d\u8fd0\u884c QUIC \u670d\u52a1\u5668\u4e8c\u8fdb\u5236\u6587\u4ef6\uff0c\u4ee5\u907f\u514d\u5305\u51b2\u7a81\u5e76\u521b\u5efa\u66f4\u7075\u6d3b\u7684\u8bbe\u7f6e\u3002 chromium \u5728\u5bb9\u5668\u4e2d\u6709\u4e00\u4e2a\u7279\u6b8a\u7684\u8bbe\u7f6e\uff0c\u5b83\u4ee5\u4ee3\u7406\u6a21\u5f0f\u542f\u52a8\u5e76\u5c06\u8bf7\u6c42\u8f6c\u53d1\u5230\u4e00\u4e2a\u7b80\u5355\u7684 python \u540e\u7aef\u670d\u52a1\u5668\u3002 \u7814\u7a76\u8005\u88ab\u8feb\u504f\u79bb\u5176\u4ed6\u8bbe\u7f6e\uff0c\u56e0\u4e3a Chromium \u6d4b\u8bd5\u670d\u52a1\u5668\u4ec5\u652f\u6301\u4ee3\u7406\u6216\u7f13\u5b58\u6a21\u5f0f\uff0c\u800c\u7f13\u5b58\u6a21\u5f0f\u5728\u8981\u6c42\u7684\u53c2\u6570\u8303\u56f4\u5185\u4e0d\u8d77\u4f5c\u7528\u3002 \u6240\u6709\u670d\u52a1\u5668\u90fd\u4ee5\u9ed8\u8ba4\u914d\u7f6e\u90e8\u7f72\u3002 Dockerfiles\u53ef\u4ee5\u5728GitHub \u5b58\u50a8\u5e93\u4e2d\u627e\u5230\u3002 \u6b64\u5916\u8fd8\u5728 DockerHub\uff08https:\/\/hub.docker.com\/u\/yukonsec<\/a>\uff09\u4e2d\u63d0\u4f9b\u4e86\u4f7f\u7528\u8fc7\u7684\u5bb9\u5668\uff0c\u4ee5\u63d0\u4f9b\u4e00\u79cd\u7b80\u5355\u7684\u65b9\u6cd5\u6765\u91cd\u73b0\u5b9e\u9a8c\u3002 \u7531\u4e8e\u5927\u591a\u6570 QUIC \u5f00\u6e90\u5b9e\u73b0\u53ea\u63d0\u4f9b HTTP \u670d\u52a1\u5668\u4f5c\u4e3a\u6d4b\u8bd5\u4e8c\u8fdb\u5236\u6587\u4ef6\uff0c\u56e0\u6b64\u4e3a\u6bcf\u4e2a\u670d\u52a1\u5668\u521b\u5efa\u4e86\u5927\u6587\u4ef6\uff08\u2248700MB\uff09\u3002\u5982\u679c\u9700\u8981\uff0c\u53ef\u4ee5\u8bf7\u6c42\u8fd9\u4e9b\u6587\u4ef6\u4ee5\u4fdd\u6301 QUIC \u8fde\u63a5\u6253\u5f00\u3002 \u5ba2\u6237\u7aef\u548c\u670d\u52a1\u5668\u7684\u9650\u5236\u548c\u80fd\u529b\u7b26\u5408\u5a01\u80c1\u6a21\u578b\u3002<\/p>\n

\u4e3a\u4e86\u66f4\u6df1\u5165\u5730\u4e86\u89e3\u901a\u4fe1\uff0c\u4f7f\u7528\u4e86Wireshark \u7684\u5f00\u53d1\u7248\u672c (v3.7.0) \u6765\u76d1\u63a7\u670d\u52a1\u5668\u4e0a\u7684\u7f51\u7edc\u6d41\u91cf\uff0c\u8be5\u670d\u52a1\u5668\u5177\u6709\u4e0e\u89c4\u8303\u5f00\u53d1\u540c\u6b65\u7684\u6700\u65b0 QUIC \u6570\u636e\u5305\u5206\u6790\u529f\u80fd\u3002 \u5982\u679c\u9700\u8981\uff0cTLS \u52a0\u5bc6\u5bc6\u94a5\u4ece lsquic \u5ba2\u6237\u7aef\u5bfc\u51fa\u5e76\u52a0\u8f7d\u5230 Wireshark \u4e2d\u3002<\/p>\n

C. \u6f0f\u6d1e\u5206\u6790<\/h3>\n

\u4e0b\u8868\u663e\u793a\u4e86\u6bcf\u79cd\u5f00\u6e90\u5b9e\u73b0\u7684\u8bf7\u6c42\u4f2a\u9020\u653b\u51fb\u7684\u76f8\u5173\u56e0\u7d20\uff1a\u6bcf\u79cd\u653b\u51fb\u6280\u672f\uff08Vuln\uff09\u7684\u7b2c\u4e00\u5217\u8868\u793a\u8be5\u5f00\u6e90\u5b9e\u73b0\u662f\u5426\u666e\u904d\u6613\u53d7\u653b\u51fb\u3002 \u534f\u8bae\u5047\u5192\u548c\u6d41\u91cf\u653e\u5927\u7684\u4e0d\u540c\u5f71\u54cd\u5217\u5728\u4e09\u79cd\u653b\u51fb\u6280\u672f\u7684\u5176\u4f59\u5217\u4e2d\u3002 \u603b\u4e4b\u89c2\u5bdf\u5230 13 \u4e2a\u5f00\u6e90\u5b9e\u73b0\u4e2d\u6709 9 \u4e2a\u5bb9\u6613\u53d7\u5230 CMRF \u7684\u653b\u51fb\uff0c\u6240\u6709 13 \u4e2a\u5f00\u6e90\u5b9e\u73b0\u90fd\u5bb9\u6613\u53d7\u5230 SIRF \u548c VNRF \u7684\u653b\u51fb\u3002<\/p>\n

\"\"<\/p>\n

\u586b\u5145\u5217 (Pad) \u5217\u51fa\u4e86\u670d\u52a1\u5668\u662f\u5426\u6839\u636e PMTUD \u7684\u8981\u6c42\u5c06\u5305\u542b PATH_CHALLENGE \u7684\u7b2c\u4e00\u4e2a\u6570\u636e\u5305\u6269\u5927\u5230 1200 \u5b57\u8282\u3002 \u89c2\u5bdf\u5230\u6267\u884c\u586b\u5145\u5230\u8fd9\u4e2a\u5927\u5c0f\u7684\u4e09\u4e2a\u5f00\u6e90\u5b9e\u73b0\u3002<\/p>\n

\u9664\u4e86\u586b\u5145\u548c\u653e\u5927\uff0c\u4e0a\u8868\u5217\u51fa\u4e86New CID\uff0cRef. CID\uff0c\u4ee5\u53ca CID > 20\u3002 New CID \u5217\u6307\u793a\u670d\u52a1\u5668\u662f\u5426\u4e3a\u65b0\u8def\u5f84\u4f7f\u7528New CID\u3002 \u4e3a\u4e86\u4f7f\u7528 CMRF \u6267\u884c\u534f\u8bae\u5047\u5192\uff0c\u653b\u51fb\u8005\u5fc5\u987b\u4e8b\u5148\u77e5\u9053\u4f7f\u7528\u54ea\u4e2a CID \u624d\u80fd\u5c06\u6709\u6548\u8d1f\u8f7d\u6ce8\u5165\u6b63\u786e\u7684 CID\u3002 \u7531\u4e8e QUIC \u8981\u6c42\u6ca1\u6709 CID \u88ab\u91cd\u590d\u7528\u4e8e\u4e00\u4e2a\u8fde\u63a5\uff0c\u56e0\u6b64\u4e0d\u53ef\u80fd\u5728\u63e1\u624b\u548c NEW_CONNECTION_ID \u5e27\u4e2d\u4f20\u8f93\u76f8\u540c\u7684\u6709\u6548\u8d1f\u8f7d\u3002 \u53ea\u6709\u4e94\u4e2a\u652f\u6301\u8fde\u63a5\u8fc1\u79fb\u7684\u5f00\u6e90\u5b9e\u73b0\u6839\u636e\u9700\u8981\u4f7f\u7528New CID\u3002 \u8fd9\u672c\u8eab\u5c31\u8fdd\u53cd\u4e86 QUIC \u89c4\u8303\u3002<\/p>\n

\u5982\u679c\u5ba2\u6237\u7aef\u63d0\u8bae\u7684 DCID \u88ab\u670d\u52a1\u5668\u955c\u50cf\uff0cSIRF \u53ef\u4ee5\u63a7\u5236\u4e24\u500d\u7684\u5b57\u8282\u3002 \u6b64\u884c\u4e3a\u7684\u8bc4\u4f30\u7ed3\u679c\u7531 Ref. CID\u5217\u8868\u793a\u3002 \u6240\u6709\u7ecf\u8fc7\u6d4b\u8bd5\u7684\u5f00\u6e90\u5b9e\u73b0\u90fd\u4f7f\u7528New CID\uff0c\u4ece\u800c\u9650\u5236\u4e86\u53ef\u63a7\u7684\u653b\u51fb\u7a7a\u95f4\u3002 \u6700\u540e\u4e00\u5217CID > 20\u8868\u793a\u670d\u52a1\u5668\u662f\u5426\u54cd\u5e94\u7248\u672c\u6807\u8bc6\u7b26\u672a\u77e5\u4e14CID\u5927\u4e8e20\u7684\u5ba2\u6237\u7aef\u521d\u59cb\u6570\u636e\u5305\u3002\u5982\u679c\u670d\u52a1\u5668\u4e0d\u63a5\u53d7\u66f4\u957f\u7684CID\u503c\uff0cVNRF\u7684\u534f\u8bae\u5047\u5192\u653b\u51fb\u5f71\u54cd\u4f1a\u663e\u7740\u964d\u4f4e\uff0c\u4f46\u8fd9\u6837\u505a\u8fdd\u53cd\u4e86 QUIC \u89c4\u8303\u3002 \u5728 13 \u4e2a\u5f00\u6e90\u5b9e\u73b0\u4e2d\uff0c\u6709\u4e5d\u4e2a\u54cd\u5e94\u4e86\u672a\u77e5\u7248\u672c 0x13371337\uff0cCID \u957f\u5ea6\u6700\u591a\u4e3a 255 \u5b57\u8282\u3002<\/p>\n

D. \u6d41\u91cf\u653e\u5927\u5206\u6790<\/h3>\n

\u5728\u672c\u8282\u4e2d\u8bc4\u4f30\u6b3a\u9a97\u8def\u5f84\u4e0a\u53d1\u751f\u7684\u653e\u5927\uff0c\u4e0b\u56fe\u4e2d\u63cf\u7ed8\u4e86\u5404\u4e2a\u653e\u5927\u56e0\u5b50\u3002\u5bf9 CMRF \u4f7f\u7528\u4e86\u4e24\u4e2a PAF \u6d4b\u91cf\u503c\u3002 \u7b2c\u4e00\u4e2a\u503c\u63cf\u8ff0\u4e86\u4ec5\u5305\u542b\u5355\u4e2a ACK \u5e27\u7684\u6b3a\u9a97\u6570\u636e\u5305\u7684\u653e\u5927\u3002 \u5bf9\u4e8e\u7b2c\u4e8c\u6b21\u6d4b\u91cf\uff0c\u6765\u81ea\u5ba2\u6237\u7aef\u7684\u6240\u6709\u672a\u51b3\u5e27\u4e5f\u4e0e\u6b3a\u9a97\u5730\u5740\u4e00\u8d77\u4f20\u8f93\u3002 \u53d1\u9001\u5c06\u7ee7\u7eed\u6700\u591a\u4e09\u5206\u949f\uff0c\u6216\u8005\u76f4\u5230\u8fde\u63a5\u88ab\u5176\u4e2d\u4e00\u4e2a\u7aef\u70b9\u7ec8\u6b62\uff0c\u4f8b\u5982\uff0c\u7531\u4e8e\u7f3a\u5c11 PATH_RESPONSE\u3002SIRF\u6709\u4e00\u4e2a PAF\u6d4b\u91cf\uff0c\u56e0\u4e3a\u5ba2\u6237\u7aef\u603b\u662f\u53ea\u53d1\u9001\u4e00\u4e2a\u521d\u59cb\u6570\u636e\u5305\u3002 \u5982\u679c\u5176\u4e2d\u4e00\u4e2a PAF \u6d4b\u91cf\u503c\u8d85\u8fc7\u4e09\u4e2a\u53cd\u653e\u5927\u9650\u5236\uff0c\u5219\u8be5\u5f00\u6e90\u5b9e\u73b0\u5728\u524d\u8868\u4e2d\u88ab\u6807\u8bb0\u4e3a\u6613\u53d7\u653e\u5927\u5f71\u54cd\u3002\u7531\u4e8e\u7248\u672c\u534f\u5546\u5305\u603b\u662f\u5c0f\u4e8e\u6765\u81ea\u5ba2\u6237\u7aef\u7684\u521d\u59cb\u5305\uff0c\u56e0\u6b64\u6ca1\u6709\u5bf9 VNRF \u8fdb\u884c\u653e\u5927\u65b9\u9762\u7684\u8bc4\u4f30\u3002\u4e0b\u56fe\u8fdb\u4e00\u6b65\u5217\u51fa\u4e86 CMRF \u7684\u5b9e\u9645 BAF \u503c\uff0c\u5982\u679c\u5b83\u4eec\u8d85\u8fc7\u5b83\u4eec\u4e5f\u8d85\u8fc7\u4e86\u53cd\u653e\u5927\u9650\u5236\u4ee5\u8868\u660e\u73b0\u5b9e\u4e16\u754c\u7684 DoS \u751f\u5b58\u80fd\u529b\u3002<\/p>\n

\"\"<\/p>\n

chromium\u3001lsquic\u3001mvfst\u3001neqo \u548c picoquic \u4e0d\u9075\u5b88 QUIC \u5bf9 CMRF \u7684\u6297\u653e\u5927\u9650\u5236\u3002\u4ed6\u4eec\u4e0d\u4f1a\u5c06\u54cd\u5e94\u9650\u5236\u4e3a\u5355\u4e2a\u6b3a\u9a97\u6570\u636e\u5305\u672a\u9a8c\u8bc1\u8def\u5f84\u4e0a\u6570\u636e\u91cf\u7684\u4e09\u500d\uff0c\u4ece\u800c\u542f\u52a8\u8fde\u63a5\u8fc1\u79fb\u3002 \u7279\u522b\u662fchromium\u3001lsquic \u548c mvfst \u663e\u793a\u51fa\u9ad8\u8fbe 374.44 \u7684\u663e\u7740 PAF \u503c\u3002 \u867d\u7136 lsquic \u4e3a\u5197\u4f59\u53d1\u8d77\u591a\u8def\u5f84\u6311\u6218\u5e76\u5728\u521d\u59cb\u8def\u5f84\u6311\u6218\u4e2d\u6267\u884c 1200 \u5b57\u8282\u586b\u5145\uff0c\u4f46 mvfst \u5728\u9a8c\u8bc1\u8def\u5f84\u4e4b\u524d\u5df2\u7ecf\u4f20\u8f93\u4e86\u592a\u591a\u7684\u6d41\u6570\u636e\u3002 neqo \u662f\u6700\u63a5\u8fd1\u9075\u5b88\u89c4\u8303\u7684\uff0c\u9996\u5148\u53d1\u8d77\u4e00\u4e2a\u6ca1\u6709\u586b\u5145\u7684\u8def\u5f84\u6311\u6218\uff0c\u7136\u540e\u662f\u4e00\u4e2a\u586b\u5145\u7684\u8def\u5f84\u6311\u6218\u3002 \u4f46\u662f\uff0c\u586b\u5145\u7684\u6311\u6218\u4f1a\u5728\u6ca1\u6709\u7b49\u5f85\u7b2c\u4e00\u4e2a\u54cd\u5e94\u7684\u60c5\u51b5\u4e0b\u8fc7\u65e9\u53d1\u9001\u3002\u56e0\u6b64\uff0c\u7b2c\u4e8c\u6761\u8def\u5f84\u6311\u6218\u8fdd\u53cd\u4e86\u53cd\u653e\u5927\u9650\u5236\u3002<\/p>\n

chromium \u5728\u8fde\u63a5\u8fc1\u79fb\u671f\u95f4\u4f1a\u5f15\u53d1\u975e\u5e38\u610f\u5916\u7684\u884c\u4e3a\u3002 \u5b83\u6839\u672c\u4e0d\u53d1\u9001\u8def\u5f84\u6311\u6218\uff0c\u800c\u662f\u76f4\u63a5\u5f00\u59cb\u53d1\u9001\u6d41\u6570\u636e\u3002 \u8fd9\u4f1a\u5bfc\u81f4\u4e24\u79cd\u60c5\u51b5\u4e0b\u7684\u663e\u7740\u653e\u5927\uff0c\u56e0\u4e3a\u4e0e\u672a\u51b3\u786e\u8ba4\u76f8\u6bd4\uff0cSTREAM \u5e27\u5f88\u5927\u3002\u7531\u4e8e\u67d0\u4e9b\u5ba2\u6237\u7aef\u5b9e\u73b0\u7684\u517c\u5bb9\u6027\u95ee\u9898\uff0c\u8def\u5f84\u9a8c\u8bc1\u9ed8\u8ba4\u5173\u95ed\uff0c\u5e76\u4f7f\u7528\u65e7\u7684 gQUIC \u673a\u5236\u3002 \u8def\u5f84\u9a8c\u8bc1\u548c\u4e25\u683c\u9075\u5b88\u653e\u5927\u9650\u5236\u90fd\u53ef\u4ee5\u901a\u8fc7\u8bbe\u7f6e\u76f8\u5e94\u7684\u7f16\u8bd1\u6807\u5fd7\u6765\u6253\u5f00\u3002 \u4f46\u662f\u8fd9\u4e0d\u4f1a\u5f71\u54cd\u6d4b\u91cf\u7684\u653e\u5927\u7cfb\u6570\uff0c\u56e0\u4e3a\u6bd4\u8f83\u7684\u9ed8\u8ba4\u914d\u7f6e\u4ecd\u7136\u5bb9\u6613\u53d7\u5230\u653b\u51fb\u3002<\/p>\n

\u5bf9\u4e8e\u540c\u6837\u8fc7\u65e9\u53d1\u9001\u6d41\u6570\u636e\u7684 mvfst\uff0c\u89c2\u5bdf\u5230\u5b83\u4e5f\u8d85\u8fc7\u4e86\u53cd\u653e\u5927\u9650\u5236\u3002 \u4f46\u662f\uff0c\u5bf9\u4e8e chromium \u548c mvfst\uff0c\u968f\u7740\u66f4\u591a\u6570\u636e\u901a\u8fc7\u672a\u51b3 ACK \u53d1\u9001\uff0cPAF \u8f83\u4f4e\u3002 \u5f53\u672a\u51b3\u6570\u636e\u5305\u4e5f\u88ab\u53d1\u9001\u65f6\uff0c\u5176\u4f59\u5f00\u6e90\u5b9e\u73b0\u4e0d\u4f1a\u53d1\u751f\u653e\u5927\uff0c\u56e0\u4e3a\u670d\u52a1\u5668\u4e0d\u4f1a\u4e3a\u6bcf\u4e2a\u63a5\u6536\u5230\u7684\u6570\u636e\u5305\u53d1\u9001\u989d\u5916\u7684\u8def\u5f84\u6311\u6218\u3002<\/p>\n

\u4e0b\u56fe\u6bd4\u8f83\u4e86\u8d85\u8fc7 CMRF \u53cd\u653e\u5927\u9650\u5236\u7684\u5f00\u6e90\u5b9e\u73b0\u968f\u65f6\u95f4\u53d1\u9001\u7684\u5b57\u8282\u6570\u3002 \u5b83\u8868\u660e\u5927\u90e8\u5206\u6570\u636e\u662f\u5728\u4e00\u6b21\u5927\u7206\u53d1\u4e2d\u542f\u52a8\u8fde\u63a5\u8fc1\u79fb\u540e\u76f4\u63a5\u53d1\u9001\u7684\u3002 lsquic \u8fd8\u4f20\u8f93\u4e86\u521d\u59cb\u8def\u5f84\u6311\u6218\u7684\u91cd\u8bd5\uff0c\u5e76\u968f\u7740\u65f6\u95f4\u7684\u63a8\u79fb\u4ea7\u751f\u5c0f\u5757\u989d\u5916\u6570\u636e\u3002 \u5bf9\u4e8e\u5728DDoS\u573a\u666f\u4e2d\u5229\u7528\u653e\u5927\u7684\u653b\u51fb\u8005\u6765\u8bf4\uff0c\u8fd9\u79cd\u884c\u4e3a\u53ef\u80fd\u4e0d\u592a\u6709\u8da3\u3002 \u7531\u4e8e\u5e76\u975e\u6240\u6709\u653e\u5927\u90fd\u5728\u8fde\u63a5\u8fc1\u79fb\u542f\u52a8\u540e\u7acb\u5373\u6267\u884c\u3002<\/p>\n

\"\"<\/p>\n

\u603b\u653e\u5927\u7684\u5b57\u8282\u7387\u7ed8\u5236\u5728\u4e0a\u56fec \u4e2d\u3002 \u5b83\u8868\u660e\u4e5f\u6709\u5927\u91cf\u6570\u636e\u7a81\u53d1\u53d1\u9001\u5230\u76ee\u6807\uff0c\u4f46\u968f\u7740\u65f6\u95f4\u7684\u63a8\u79fb\u53d1\u9001\u7684\u6570\u636e\u5e76\u4e0d\u591a\u3002 \u5373\u4f7f\u540c\u65f6\u53d1\u9001\u4e86\u6b3a\u9a97\u6570\u636e\u5305\uff0c\u94ec\u7684\u653e\u5927\u4e5f\u4f1a\u53d1\u751f\u5ef6\u8fdf\uff0c\u5b83\u53ef\u80fd\u662f\u4ee3\u7406\u8bbe\u7f6e\u7684\u4ea7\u7269\u3002 \u5ef6\u8fdf\u4f7f\u5f97 chromium \u4e0d\u592a\u9002\u5408\u653b\u51fb\uff0c\u56e0\u4e3a\u4e0e\u53d7\u5bb3\u8005\u7684\u8fde\u63a5\u53ef\u80fd\u5fc5\u987b\u4fdd\u6301\u6253\u5f00\u66f4\u957f\u65f6\u95f4\u3002<\/p>\n

\u5bf9\u4e8e SIRF\uff0c\u5927\u591a\u6570\u5f00\u6e90\u5b9e\u73b0\u90fd\u9075\u5faa\u53cd\u653e\u5927\u9650\u5236\u3002 aioquic\u3001msquic \u548c quicly \u9047\u5230\u4e86\u524d\u6587\u63cf\u8ff0\u7684\u95ee\u9898\uff0c\u5373\u7531\u4e8e TLS \u53c2\u6570\u592a\u5927\uff0c\u670d\u52a1\u5668\u521d\u59cb\u6570\u636e\u5305\u7565\u5fae\u8d85\u8fc7\u4e86\u5141\u8bb8\u7684\u53cd\u653e\u5927\u9650\u5236\u3002 mvfst \u548c neqo \u5728 QUIC \u4e2d\u65bd\u52a0\u4e86\u6709\u5173\u53ef\u9760\u6027\u7684\u9519\u8bef\u884c\u4e3a\u3002 \u5728\u8fd9\u4e9b\u5f00\u6e90\u5b9e\u73b0\u4e2d\uff0c\u63e1\u624b\u6d88\u606f\u4e5f\u5b58\u5728\u7528\u4e8e\u6b63\u5728\u8fdb\u884c\u7684\u8fde\u63a5\u7684\u6807\u51c6\u91cd\u8bd5\u673a\u5236\u3002\u670d\u52a1\u5668\u521d\u59cb\u6570\u636e\u5305\u88ab\u591a\u6b21\u53d1\u9001\uff0c\u5bfc\u81f4\u8fd9\u4e09\u79cd\u5f00\u6e90\u5b9e\u73b0\u7684 PAF (BAF) \u503c\u8f83\u9ad8\u3002<\/p>\n

quic-go \u548c quiche \u4e5f\u662f SIRF \u8bc4\u6d4b\u7684\u7279\u8272\u3002\u8fd9\u4e24\u79cd\u670d\u52a1\u5668\u5f00\u6e90\u5b9e\u73b0\u90fd\u53d1\u9001\u91cd\u8bd5\u6570\u636e\u5305\u800c\u4e0d\u662f\u670d\u52a1\u5668\u521d\u59cb\u6570\u636e\u5305\uff0c\u4ee5\u5728\u8ba1\u7b97\u670d\u52a1\u5668\u521d\u59cb\u6570\u636e\u5305\u4e4b\u524d\u4e3a\u65b0\u7684\u8fde\u63a5\u5c1d\u8bd5\u9a8c\u8bc1\u8def\u5f84\u3002 \u91cd\u8bd5\u6570\u636e\u5305\u603b\u662f\u5c0f\u4e8e\u5ba2\u6237\u7aef\u521d\u59cb\u6570\u636e\u5305\uff0c\u5e76\u4e14\u4e0d\u4f1a\u5bfc\u81f4\u653e\u5927\u6761\u4ef6\u3002<\/p>\n

\u603b\u7684\u6765\u8bf4\uff0c\u6240\u6709 13 \u79cd\u5f00\u6e90\u5b9e\u73b0\u90fd\u53d7\u5230\u81f3\u5c11\u4e00\u79cd\u8bf7\u6c42\u4f2a\u9020\u6280\u672f\u7684\u5f71\u54cd\uff0c\u4f46\u5404\u4e0d\u76f8\u540c\u3002 \u4e5d\u4e2a\u670d\u52a1\u5668\u5f00\u6e90\u5b9e\u73b0\u53ef\u4ee5\u901a\u8fc7VNRF\u5b9e\u65bd\u534f\u8bae\u5047\u5192\u653b\u51fb\u3002 \u6240\u6709 13 \u79cd\u5f00\u6e90\u5b9e\u73b0\u90fd\u5bb9\u6613\u53d7\u5230\u8fd9\u79cd\u653b\u51fb\u5411\u91cf\u7684\u5f71\u54cd\uff0c\u5982\u679c\u5b83\u4eec\u7b26\u5408\u89c4\u8303\u7684\u8bdd\u3002 VNRF \u7684\u5f3a\u9879\u5728\u4e8e\u5b83\u5b8c\u5168\u57fa\u4e8e QUIC \u534f\u8bae\u7684\u5b9a\u4e49\u3002 \u4e3a\u6b64\uff0c\u672c\u7814\u7a76\u7ed3\u679c\u9a73\u65a5\u4e86QUIC \u5de5\u4f5c\u7ec4\u7684\u65e9\u671f\u770b\u6cd5\uff08https:\/\/github.com\/quicwg\/base-drafts\/issues\/3995<\/a>\uff09\uff0c\u5373\u8bf7\u6c42\u4f2a\u9020\u5e76\u4e0d\u90a3\u4e48\u4e25\u91cd\u3002QUIC \u4e2d\u7684\u8bf7\u6c42\u4f2a\u9020\u4f1a\u4ea7\u751f\u91cd\u5927\u5f71\u54cd\uff0c\u63a5\u4e0b\u6765\uff0c\u672c\u7814\u7a76\u5c55\u793a\u4e86\u4e94\u4e2a\u5f00\u6e90\u5b9e\u73b0\u4e2d\u8fdd\u53cd\u653e\u5927\u9650\u5236\u7684\u60c5\u51b5\u3002 \u6d4b\u5f97\u7684 PAF \u503c\u9ad8\u8fbe 374.44\uff0c\u5927\u5927\u8d85\u8fc7\u4e86\u6297\u653e\u5927\u6781\u9650\u3002\u7ecf\u6d4b\u91cf\uff0c\u53ef\u7528\u4e8e\u6d41\u91cf\u653e\u5927\u653b\u51fb\u7684\u5b9e\u9645 BAF \u503c\u4e2d\uff0cchromium (CMRF) \u6700\u9ad8\u4e3a 18.28\uff0cmvfst (SIRF) \u6700\u9ad8\u4e3a 22.1\u3002 \u5373\u4f7f\u5b9e\u9645 BAF \u503c\u88ab\u5176\u4ed6\u4e00\u4e9b\u534f\u8bae\uff08\u4f8b\u5982 NTP \u6216\u67d0\u4e9b\u60c5\u51b5\u4e0b\u7684 DNS \uff09\u8d85\u8d8a\uff0c\u5b83\u4eec\u53ef\u80fd\u4ecd\u7136\u975e\u5e38\u76f8\u5173\u3002 \u4f5c\u4e3a\u6838\u5fc3\u7f51\u7edc\u534f\u8bae\uff0cQUIC \u5c06\u968f\u65f6\u53ef\u7528\u5e76\u88ab\u9632\u706b\u5899\u5e7f\u6cdb\u63a5\u53d7\u3002 \u8fd9\u4e9b\u56e0\u7d20\u4f7f\u5f97\u5b83\u6bd4\u5176\u4ed6\u534f\u8bae\u66f4\u9002\u5408\u6d41\u91cf\u653e\u5927\u3002<\/p>\n

E. \u57fa\u4e8e\u54c8\u5e0c\u7684 CID \u751f\u6210<\/h3>\n

\u4f5c\u4e3aPoC\uff0c\u672c\u5de5\u4f5c\u4e3a aioquic \u670d\u52a1\u5668\u5b9e\u73b0\u4e86\u57fa\u4e8e\u54c8\u5e0c\u7684 CID \u751f\u6210\uff0c\u7528\u4e8e\u7248\u672c\u534f\u5546\u3002 \u7531\u4e8e\u7248\u672c\u534f\u5546\u4e0e\u5176\u4ed6\u6d88\u606f\u6d41\u662f\u5206\u5f00\u7684\uff0c\u56e0\u6b64\u53ef\u4ee5\u5728\u4e0d\u5f71\u54cd\u5176\u4f59\u534f\u8bae\u7684\u60c5\u51b5\u4e0b\u66f4\u6539 CID \u5904\u7406\u3002 \u4f5c\u4e3a\u5355\u5411\u54c8\u5e0c\u51fd\u6570\uff0c\u4f7f\u7528 SHAKE \u6d77\u7ef5\u51fd\u6570\uff08sponge function\uff09\u3002 \u7531\u4e8e\u6d77\u7ef5\u51fd\u6570\u65e8\u5728\u652f\u6301\u53ef\u53d8\u957f\u5ea6\uff0c\u56e0\u6b64\u975e\u5e38\u9002\u5408 QUIC CID \u573a\u666f\u3002 \u53ef\u4ee5\u751f\u6210 20 \u4e2a\u5b57\u8282\u7684\u503c\uff0c\u540c\u65f6\u4fdd\u7559\u5c06\u6765\u4f7f\u7528\u66f4\u957f CID \u7684\u53ef\u80fd\u6027\u3002 \u5728\u6d4b\u8bd5\u4e2d\u4f7f\u7528\u4e86 SHAKE256\uff0c\u56e0\u4e3a\u5b83\u662f\u5f53\u524d SHA3 \u6807\u51c6\u7684\u57fa\u7840\u7b97\u6cd5\u4e4b\u4e00\uff0c\u5e76\u4e14\u6709\u8bb8\u591a\u5e93\u652f\u6301\u5b83\u3002<\/p>\n

\u5728\u5b9e\u9a8c\u6027\u80fd\u6d4b\u8bd5\u4e2d\uff0c\u6bd4\u8f83\u4e86aioquic\u57fa\u4e8eos.urandom()\u7684CID\u751f\u6210\u548chashlib.shake_256()\u7684\u54c8\u5e0c\u6027\u80fd\u3002 \u4e3a\u6b64\u751f\u6210\u4e86 10,000 \u4e2a CID\uff0c\u5c06\u957f\u5ea6\u589e\u52a0\u5230 255 \u5b57\u8282\uff0c\u5e76\u6d4b\u91cf\u4e86\u8ba1\u7b97\u65f6\u95f4\u3002 \u6240\u6709\u503c\u7684\u5e73\u5747\u5dee\u5f02\u4ec5\u4e3a 859 ns \u5de6\u53f3\u3002\u6839\u636e\u7814\u7a76\u5458\u5728 aioquic \u5b9e\u73b0\u65b9\u9762\u7684\u7ecf\u9a8c\uff0c\u5f00\u6e90\u5b9e\u73b0\u6240\u63cf\u8ff0\u673a\u5236\u7684\u52aa\u529b\u662f\u5408\u7406\u7684\u3002 \u5f53\u4f7f\u7528 SHA3 \u65f6\uff0c\u6240\u6709\u5e38\u89c1\u7684\u7f16\u7a0b\u8bed\u8a00\u90fd\u6709\u652f\u6301 SHAKE256 \u7684\u5e93\u3002 \u5728\u4ee3\u7801\u5e93\u7684\u5927\u90e8\u5206\u5730\u65b9\uff0c\u5f53\u524d\u7684 CID \u53d8\u91cf\u53ef\u4ee5\u7528\u6563\u5217\u503c\u66ff\u6362\u3002 \u4e3b\u8981\u533a\u522b\u5728\u4e8e\u539f\u59cb\u503c\u5fc5\u987b\u4f20\u9012\u7ed9\u521d\u59cb\u6570\u636e\u5305\u7684\u751f\u6210\u548c NEW_CONNECTION_ID \u5e27\u3002<\/p>\n

F. \u63a9\u853d<\/h3>\n

\u7531\u4e8e\u5c4f\u853d\u9700\u8981\u5bf9\u6807\u5934\u7ed3\u6784\u8fdb\u884c\u66f4\u591a\u66f4\u6539\uff0c\u56e0\u6b64\u4e0d\u5bb9\u6613\u96c6\u6210\u5230\u5f53\u524d\u7684\u5f00\u6e90\u5b9e\u73b0\u4e2d\u3002 \u4ece\u5f00\u53d1\u7684\u89d2\u5ea6\u6765\u770b\uff0c\u8fd9\u4f7f\u5f97\u57fa\u4e8e\u54c8\u5e0c\u7684\u7f13\u89e3\u65b9\u6cd5\u6210\u4e3a\u6709\u5229\u7684\u65b9\u6cd5\uff0c\u56e0\u4e3a\u5b83\u53ea\u9700\u8981\u5bf9\u4ee3\u7801\u5e93\u8fdb\u884c\u5fae\u5c0f\u7684\u66f4\u6539\u3002 \u7136\u800c\uff0c\u57fa\u4e8e\u54c8\u5e0c\u7684 CID \u751f\u6210\u5bf9 CID \u7684\u5f53\u524d\u529f\u80fd\u7684\u5f71\u54cd\u6bd4\u5c4f\u853d\u66f4\u5927\u3002 \u4f7f\u7528 CID \u7684\u67d0\u4e9b\u8def\u7531\u548c\u8d1f\u8f7d\u5e73\u8861\u7b56\u7565\u53d8\u5f97\u4e0d\u53ef\u80fd\u3002 \u4ece\u6027\u80fd\u7684\u89d2\u5ea6\u6765\u770b\uff0c\u5f97\u51fa\u7684\u7ed3\u8bba\u662f\u57fa\u4e8e\u54c8\u5e0c\u7684 CID \u751f\u6210\u4e5f\u662f\u6709\u5229\u7684\u3002 \u4e3a\u6b64\u6267\u884c\u4e86\u57fa\u672c\u7684\u6027\u80fd\u5206\u6790\uff0c\u4f7f\u7528 numpy.bitwise_xor() \u51fd\u6570\u5c4f\u853d\u4e86\u4e00\u4e2a\u666e\u901a\u5927\u5c0f\u7684\u521d\u59cb\u6807\u5934\uff0850 \u5b57\u8282\uff09\u3002 10,000 \u6b21\u91cd\u590d\u5bfc\u81f4\u5e73\u5747\u63a9\u853d\u65f6\u95f4\u4e3a 702 ns\u3002 \u867d\u7136 XOR-ing \u663e\u7136\u6bd4\u6563\u5217\u8fd0\u7b97\u5feb\uff0c\u4f46\u5b83\u5fc5\u987b\u5bf9\u6bcf\u4e2a\u6570\u636e\u5305\u6267\u884c\uff0c\u800c\u4e0d\u4ec5\u4ec5\u662f\u5bf9\u5c11\u6570\u751f\u6210\u7684 CID\u3002<\/p>\n

\u4e0d\u5e78\u7684\u662f\uff0c\u8fd9\u4e24\u79cd\u7f13\u89e3\u7b56\u7565\u90fd\u7834\u574f\u4e86\u5f53\u524d\u548c\u65b0 QUIC \u7248\u672c\u7684\u76f4\u63a5\u4e92\u64cd\u4f5c\u6027\u3002\u4e3a\u4e86\u4fdd\u6301\u5411\u540e\u517c\u5bb9\u6027\uff0c\u670d\u52a1\u5668\u5b9e\u73b0\u4ecd\u9700\u8981\u4e86\u89e3\u539f\u59cb CID \u7684\u7528\u6cd5\uff0c\u4f5c\u4e3a\u4e0e\u65e7\u7248\u672c\u534f\u5546\u7684\u4e00\u90e8\u5206\u3002 \u5982\u679c\u9700\u8981\u7248\u672c\u534f\u5546\u4ee5\u5bf9\u65e7 QUIC \u7248\u672c\u4f7f\u7528\u53ef\u63a7 CID \u8bbe\u8ba1\uff0c\u5219\u5982\u4e0a\u6240\u8ff0\u7684 VNRF \u4ecd\u7136\u5b58\u5728\u3002 \u653e\u5f03\u5f53\u524d\u7684 QUIC \u7248\u672c\u4ee5\u4f7f\u534f\u8bae\u80fd\u591f\u62b5\u6297\u8bf7\u6c42\u4f2a\u9020\u5bf9\u96c6\u6210\u548c\u5f00\u53d1\u5177\u6709\u5de8\u5927\u7684\u5f71\u54cd\u3002<\/p>\n

0x06 \u63a2\u8ba8<\/h2>\n

A. \u7f51\u7edc\u63a7\u5236<\/h3>\n

\u4e0a\u8ff0\u7f13\u89e3\u65b9\u6cd5\u4e13\u6ce8\u4e8e\u534f\u8bae\u5185\u89e3\u51b3\u65b9\u6848\u3002 \u867d\u7136\u5b83\u4eec\u53ef\u4ee5\u5927\u5927\u51cf\u5c11\u8bf7\u6c42\u4f2a\u9020\u7684\u5f71\u54cd\uff0c\u4f46\u5b83\u4eec\u5e76\u4e0d\u80fd\u5b8c\u5168\u9632\u6b62\u4f2a\u9020\u7684 UDP \u6570\u636e\u62a5\u53ef\u4ee5\u4f20\u8f93\u5230\u4efb\u610f\u4e3b\u673a\uff0c\u5373\u4f7f\u5b83\u4ec5\u5305\u542b\u65e0\u6cd5\u63a7\u5236\u7684\u6570\u636e\u3002\u4e3a\u4e86\u901a\u8fc7 QUIC \u5b8c\u5168\u907f\u514d\u57fa\u4e8e UDP \u7684\u8bf7\u6c42\u4f2a\u9020\uff0c\u7f51\u7edc\u8fd0\u8425\u5546\u7684\u552f\u4e00\u9009\u62e9\u662f\u5229\u7528\u5f3a\u5927\u7684\u7f51\u7edc\u63a7\u5236\u3002 \u4e00\u79cd\u65b9\u6cd5\u662f\u4e3a\u672a\u9a8c\u8bc1\u8def\u5f84\u4e0a\u7684\u6570\u636e\u5305\u90e8\u7f72\u901f\u7387\u9650\u5236\uff0c\u4ee5\u51cf\u5c11\u653e\u5927\u5411\u91cf\u7684\u5f71\u54cd\u3002<\/p>\n

\u4f5c\u4e3a\u7b2c\u4e8c\u4e2a\u63aa\u65bd\uff0c\u5efa\u8bae\u9650\u5236\u5141\u8bb8\u670d\u52a1\u5668\u8bbf\u95ee\u7684\u5185\u90e8 IP \u5730\u5740\u8303\u56f4\u3002 \u9664\u4e86\u9650\u5236 IP \u5730\u5740\u5916\uff0c\u670d\u52a1\u5668\u8fd8\u53ef\u4ee5\u7ef4\u62a4\u6807\u51c6\u5316 UDP \u7aef\u53e3\u7684\u62d2\u7edd\u5217\u8868\uff0c\u4ee5\u907f\u514d\u5bf9\u57fa\u4e8e\u901a\u7528 UDP \u7684\u534f\u8bae\u7684\u8bf7\u6c42\u4f2a\u9020\u3002\u4e00\u822c\u6765\u8bf4\uff0c\u5e94\u8be5\u53ef\u4ee5\u963b\u6b62\u7aef\u53e3 0-1023\uff0c\u56e0\u4e3a\u8fd9\u4e9b\u7cfb\u7edf\u7aef\u53e3\u6c38\u8fdc\u4e0d\u5e94\u8be5\u7528\u4f5c\u5ba2\u6237\u7aef\u6e90\u7aef\u53e3\u3002 \u7136\u800c\uff0c\u7f51\u7edc\u8fd0\u8425\u5546\u5e94\u8be5\u610f\u8bc6\u5230\uff0cQUIC \u4e2d\u5e38\u89c1\u7684\u6709\u72b6\u6001\u4f20\u8f93\u5c42\u7f51\u7edc\u63a7\u5236\u4e0d\u5982\u57fa\u4e8e TCP \u7684\u534f\u8bae\u6709\u6548\u3002 \u6b64\u5916\uff0c\u8bb8\u591a\u53ef\u7528\u7684\u6df1\u5ea6\u6570\u636e\u5305\u68c0\u6d4b\u5de5\u5177\u5728 QUIC \u5206\u6790\u65b9\u9762\u7f3a\u4e4f\u6210\u719f\u5ea6\uff0c\u800c\u8d1f\u8f7d\u5e73\u8861\u5de5\u5177\u5bf9\u6570\u636e\u5305\u7684\u6d1e\u5bdf\u529b\u6709\u9650\u3002 \u672a\u6765\u5173\u4e8e\u5728 QUIC \u5b58\u5728\u7684\u60c5\u51b5\u4e0b\u4fdd\u62a4\u7f51\u7edc\u7684\u7814\u7a76\u5c06\u662f\u5e7f\u6cdb\u91c7\u7528\u7684\u5173\u952e\u3002<\/p>\n

B. \u670d\u52a1\u5668\u7aef\u653b\u51fb<\/h3>\n

\u672c\u7814\u7a76\u7684\u91cd\u70b9\u5728\u4e8e\u5ba2\u6237\u7aef\u653b\u51fb\u3002 \u4f5c\u4e3a\u670d\u52a1\u5668\u7684\u653b\u51fb\u8005\u65e0\u6cd5\u5229\u7528 CMRF\u3001SIRF \u548c VNRF\u3002 \u8fde\u63a5\u59cb\u7ec8\u7531\u5ba2\u6237\u7aef\u53d1\u8d77\uff0c\u4ece\u800c\u9632\u6b62 SIRF \u548c VNRF\u3002 CMRF \u662f\u4e0d\u53ef\u80fd\u7684\uff0c\u56e0\u4e3a\u76ee\u524d\u53ea\u5141\u8bb8\u5ba2\u6237\u7aef\u8fdb\u884c\u8fde\u63a5\u8fc1\u79fb\u3002QUIC\u89c4\u8303\u63d0\u5230\u4e86\u4e00\u79cd\u540c\u6837\u76f4\u63a5\u6e90\u4e8e\u534f\u8bae\u8bbe\u8ba1\u7684\u670d\u52a1\u5668\u7aef\u653b\u51fb\u3002 \u8be5\u6280\u672f\u6ee5\u7528\u63e1\u624b\u4e2d\u7684 preferred_address \u53c2\u6570\uff0c\u6307\u5b9a\u5ba2\u6237\u7aef\u5728\u63e1\u624b\u540e\u8fc1\u79fb\u5230\u7684\u5730\u5740\u3002 \u5bf9\u4e8e\u8fd9\u79cd\u65b9\u6cd5\uff0c\u53ea\u6709 DCID \u5bf9\u4e8e\u534f\u8bae\u5047\u5192\u662f\u5b8c\u5168\u53ef\u63a7\u7684\uff0c\u7c7b\u4f3c\u4e8e CMRF \u653b\u51fb\u6280\u672f\u3002 \u524d\u6587\u4e2d\u4ecb\u7ecd\u7684\u57fa\u4e8e\u54c8\u5e0c\u7684 CID \u751f\u6210\u548c\u53cd\u653e\u5927\u9650\u5236\u4e5f\u5c06\u51cf\u8f7b\u6b64\u670d\u52a1\u5668\u7aef\u653b\u51fb\u7684\u534f\u8bae\u5047\u5192\u653b\u51fb\u548c DoS \u653b\u51fb\u573a\u666f\u3002<\/p>\n

C. \u53d7\u5bb3\u8005\u68c0\u6d4b<\/h3>\n

\u6b63\u5982\u5728\u8bc4\u4f30\u4e2d\u6240\u8ba8\u8bba\u7684\u90a3\u6837\uff0c\u8fd9 13 \u79cd\u5f00\u6e90\u5b9e\u73b0\u9700\u8981\u4e0d\u540c\u7684\u5ba2\u6237\u7aef\u8bbe\u7f6e\uff0c\u5e76\u4e14\u5f71\u54cd\u4f1a\u56e0\u76ee\u6807\u670d\u52a1\u5668\u8f6f\u4ef6\u800c\u5f02\u3002 \u56e0\u6b64\uff0c\u76f8\u4fe1\u5728\u672a\u6765\u7684\u7814\u7a76\u4e2d\u7814\u7a76\u670d\u52a1\u5668\/\u53d7\u5bb3\u8005\u68c0\u6d4b\u673a\u5236\u5c06\u662f\u6709\u76ca\u7684\u3002 \u901a\u8fc7\u4f7f\u7528\u89e6\u53d1\u7248\u672c\u534f\u5546\u7684\u5ba2\u6237\u7aef\u521d\u59cb\u6570\u636e\u5305\u626b\u63cf IP \u5730\u5740\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u6267\u884c QUIC \u4f7f\u7528\u7684\u4e00\u822c\u8bc6\u522b\u3002 \u65e8\u5728\u533a\u5206\u5404\u79cd\u5f00\u6e90\u5b9e\u73b0\u7684\u73b0\u6709\u6307\u7eb9\u8bc6\u522b\u65b9\u6cd5\u4e3b\u8981\u5305\u542b\u6765\u81ea\u63e1\u624b\u7684\u5fae\u6307\u6807\uff0c\u4f8b\u5982\u6570\u636e\u5305\u957f\u5ea6\u3001CID \u957f\u5ea6\u548c CID \u66f4\u6539\u3002 \u4e00\u4e9b\u8bc4\u4f30\u7ed3\u679c\u53ef\u4ee5\u76f4\u63a5\u96c6\u6210\u5230\u6307\u7eb9\u8bc6\u522b\u673a\u5236\u4e2d\u4ee5\u63d0\u9ad8\u51c6\u786e\u6027\u3002 \u4e0d\u540c\u7684\u4e92\u64cd\u4f5c\u6027\u8bbe\u7f6e\u548c\u5bf9\u653b\u51fb\u573a\u666f\u7684\u54cd\u5e94\u4e3a 13 \u4e2a\u5f00\u6e90\u5b9e\u73b0\u4e2d\u7684\u6bcf\u4e00\u4e2a\u521b\u5efa\u4e86\u4e00\u7ec4\u5206\u79bb\u7684\u6807\u8bc6\u7b26\u3002 \u7279\u522b\u662f\u8fde\u63a5\u8fc1\u79fb\u884c\u4e3a\u53ef\u80fd\u662f\u5bf9\u73b0\u6709\u65b9\u6cd5\u7684\u6709\u4ef7\u503c\u7684\u8865\u5145\u3002 \u6b64\u5916\uff0c\u63e1\u624b\u7684 TLS \u53c2\u6570\u53ef\u80fd\u662f\u4e00\u4e2a\u6709\u6548\u7684\u6269\u5c55\uff0c\u53ea\u8981\u5b83\u4eec\u5bf9\u4e8e\u5f00\u6e90\u5b9e\u73b0\u6765\u8bf4\u662f\u9759\u6001\u7684\u5e76\u4e14\u7ba1\u7406\u5458\u4e0d\u53ef\u914d\u7f6e\u3002 \u968f\u7740\u5728\u76f8\u540c QUIC \u5e93\u4e0a\u521b\u5efa\u66f4\u591a\u5355\u72ec\u7684 HTTP\/3 \u670d\u52a1\u5668\uff0cQUIC \u548c HTTP\/3 \u4e4b\u95f4\u7684\u6df7\u5408\u65b9\u6cd5\u53ef\u80fd\u4f1a\u5f97\u5230\u6700\u51c6\u786e\u7684\u7ed3\u679c\u3002<\/p>\n

\u9664\u4e86\u5bf9\u4e3b\u673a\u7684 QUIC \u5f00\u6e90\u5b9e\u73b0\u8fdb\u884c\u4e00\u822c\u68c0\u6d4b\u5916\uff0c\u653b\u51fb\u8005\u8fd8\u9700\u8981\u9a8c\u8bc1\u6240\u8bc6\u522b\u7684\u670d\u52a1\u5668\u662f\u5426\u5904\u4e8e\u6613\u53d7\u653b\u51fb\u7684\u73af\u5883\u4e2d\u3002 \u7814\u7a76\u8005\u59cb\u7ec8\u5177\u6709\u4f18\u52bf\uff0c\u53ef\u4ee5\u5168\u9762\u4e86\u89e3\u653b\u51fb\u8005\u3001\u53d7\u5bb3\u8005\u548c\u76ee\u6807\u7ad9\u70b9\u4e0a\u53d1\u751f\u7684\u4e00\u5207\u3002 \u5728\u73b0\u5b9e\u573a\u666f\u4e2d\uff0c\u653b\u51fb\u8005\u53ef\u80fd\u65e0\u6cd5\u89c2\u5bdf\u5230\u53d7\u5bb3\u8005\u548c\u76ee\u6807\u3002 \u6b64\u5916\uff0c\u8bc4\u4f30\u7684\u8bf7\u6c42\u4f2a\u9020\u653b\u51fb\u603b\u662f\u76f2\u76ee\u7684\uff0c\u5373\u5047\u5192\u534f\u8bae\u7684\u7b54\u6848\u4e0d\u4f1a\u8f6c\u53d1\u7ed9\u5ba2\u6237\u7aef\u3002<\/p>\n

\u786e\u5b9a\u670d\u52a1\u5668\u662f\u5426\u6613\u53d7\u8bf7\u6c42\u4f2a\u9020\u653b\u51fb\u7684\u4e00\u79cd\u53ef\u80fd\u6027\u662f\u5c06\u653b\u51fb\u8005\u62e5\u6709\u7684\u673a\u5668\u4f5c\u4e3a\u76ee\u6807\u3002 \u901a\u8fc7\u89c2\u5bdf\u8fd9\u53f0\u673a\u5668\u4e0a\u7684\u4f20\u5165\u6570\u636e\u5305\uff0c\u53ef\u4ee5\u770b\u5230\u6210\u529f\u7684\u653b\u51fb\u3002 \u7136\u800c\uff0c\u8fd9\u6837\u7684\u8bc4\u4f30\u5e76\u4e0d\u80fd\u4f7f\u653b\u51fb\u8005\u8bc4\u4f30\u662f\u5426\u5b58\u5728\u963b\u6b62\u5bfb\u5740\u5176\u4ed6\u76ee\u6807 IP\uff08\u4f8b\u5982\u5185\u90e8 IP\uff09\u7684\u673a\u5236\u3002 \u4f46\u662f\uff0c\u8bc6\u522b\u5728\u91ce\u666e\u904d\u6613\u53d7\u653b\u51fb\u7684\u670d\u52a1\u5668\u53ef\u80fd\u662f\u4e00\u79cd\u6709\u6548\u7684\u7b56\u7565\u3002<\/p>\n

0x07 \u603b\u7ed3<\/h2>\n

\u672c\u6587\u5206\u6790\u4e86 QUIC \u4e2d\u5ba2\u6237\u7aef\u8bf7\u6c42\u4f2a\u9020\u653b\u51fb\u7684\u53ef\u884c\u6027\uff0c\u6b64\u7c7b\u8bf7\u6c42\u4f2a\u9020\u653b\u51fb\u7b56\u7565\u4f1a\u5bf9\u7f51\u7edc\u5b89\u5168\u4ea7\u751f\u91cd\u5927\u5f71\u54cd\u3002 \u88ab\u5206\u6790\u7684\u653b\u51fb\u65b9\u6cd5\u5305\u62ec\u57fa\u4e8e\u63e1\u624b\u7684\u670d\u52a1\u5668\u521d\u59cb\u8bf7\u6c42\u4f2a\u9020\uff08SIRF\uff09\u3001\u7248\u672c\u534f\u5546\u8bf7\u6c42\u4f2a\u9020\uff08VNRF\uff09\u4ee5\u53ca\u57fa\u4e8e\u8fde\u63a5\u8fc1\u79fb\u673a\u5236\u7684\u8fde\u63a5\u8fc1\u79fb\u8bf7\u6c42\u4f2a\u9020\uff08CMRF\uff09\u3002\u6b64\u5916\uff0c\u672c\u7814\u7a76\u6784\u5efa\u4e86\u4e00\u4e2a\u81ea\u5b9a\u4e49\u6d4b\u8bd5\u73af\u5883\uff0c\u8bc4\u4f30\u4e8613 \u79cd\u4e0d\u540c\u7684 QUIC \u670d\u52a1\u5f00\u6e90\u5b9e\u73b0\u7684\u653b\u51fb\u5411\u91cf\u3002 \u7ed3\u679c\u8868\u660e\uff0c\u6240\u6709\u670d\u52a1\u5668\u90fd\u53d7\u5230\u81f3\u5c11\u4e00\u79cd\u8bf7\u6c42\u4f2a\u9020\u6280\u672f\u7684\u5f71\u54cd\u3002<\/p>\n

QUIC \u662f\u6539\u8fdb Web \u7f51\u7edc\u5806\u6808\u7684\u66f4\u6709\u524d\u9014\u7684\u65b9\u6cd5\u4e4b\u4e00\u3002 \u7136\u800c\uff0c\u8be5\u534f\u8bae\u7684\u67d0\u4e9b\u529f\u80fd\u662f\u5168\u65b0\u7684\u6982\u5ff5\uff0c\u5c1a\u672a\u7ecf\u8fc7\u5145\u5206\u5ba1\u67e5\u4ee5\u786e\u4fdd\u5b83\u4eec\u7b26\u5408\u6709\u5173\u5176\u5b89\u5168\u5c5e\u6027\u7684\u58f0\u660e\u3002 \u56e0\u6b64\uff0c\u5728\u5efa\u8bae\u5e7f\u6cdb\u91c7\u7528\u4e4b\u524d\uff0c\u6709\u5fc5\u8981\u5bf9 QUIC \u8fdb\u884c\u8fdb\u4e00\u6b65\u7684\u5b89\u5168\u7814\u7a76\u3002<\/p>\n

\n

\u53c2\u8003\u8d44\u6599\uff1ahttps:\/\/www.ndss-symposium.org\/ndss-paper\/quicforge-client-side-request-forgery-in-quic\/<\/a><\/p>\n

\u6587\u7ae0\u6765\u81ea\uff1ahttps:\/\/www.freebuf.com\/<\/p>\n","protected":false},"excerpt":{"rendered":"QUIC\uff08Quick UDP Internet Connection\uff09\u662f\u8c37\u6b4c\u5236\u5b9a\u7684\u4e00\u79cd\u57fa\u4e8eUDP\u7684\u4f4e\u65f6\u5ef6\u7684\u4e92\u8054 […]","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[134],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/29439"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=29439"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/29439\/revisions"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=29439"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=29439"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=29439"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}