{"id":1008,"date":"2025-02-14T02:59:19","date_gmt":"2025-02-14T10:59:19","guid":{"rendered":"https:\/\/devblogs.microsoft.com\/dotnet-ch\/?p=1008"},"modified":"2025-02-14T02:59:19","modified_gmt":"2025-02-14T10:59:19","slug":"net-9-%e7%bd%91%e7%bb%9c%e4%bc%98%e5%8c%96","status":"publish","type":"post","link":"https:\/\/devblogs.microsoft.com\/dotnet-ch\/net-9-%e7%bd%91%e7%bb%9c%e4%bc%98%e5%8c%96\/","title":{"rendered":".NET 9 \u7f51\u7edc\u4f18\u5316"},"content":{"rendered":"

\u672c\u6587\u7ffb\u8bd1\u81ea M\u00e1\u0148a<\/a>, Natalia<\/a> \u548c Anton<\/a> \u521b\u4f5c\u7684 .NET 9 Networking Improvements<\/a><\/span><\/em><\/span><\/p>\n

\u79c9\u627f\u6211\u4eec\u7684\u4f20\u7edf\uff0c\u6211\u4eec\u5f88\u9ad8\u5174\u4e0e\u60a8\u5206\u4eab\u8fd9\u7bc7\u535a\u5ba2\u6587\u7ae0\uff0c\u4ee5\u4ecb\u7ecd\u65b0\u7684 .NET \u7248\u672c<\/a>\u4e2d\u7f51\u7edc\u9886\u57df\u76f8\u5173\u7684\u6700\u65b0\u52a8\u6001\u548c\u6700\u6709\u8da3\u7684\u53d8\u5316\u3002\u4eca\u5e74\uff0c\u6211\u4eec\u5e26\u6765\u4e86 HTTP<\/a> \u9886\u57df\u7684\u6539\u53d8\u3001\u65b0\u7684 HttpClientFactory<\/a> API\u3001.NET Framework \u517c\u5bb9\u6027<\/a>\u4f18\u5316\u7b49\u66f4\u591a\u5185\u5bb9\u3002\u00a0<\/span><\/p>\n

HTTP<\/b><\/span><\/h2>\n

\u5728\u63a5\u4e0b\u6765\u7684\u90e8\u5206\u4e2d\uff0c\u6211\u4eec\u5c06\u4ecb\u7ecd HTTP \u9886\u57df\u6700\u5177\u5f71\u54cd\u529b\u7684\u53d8\u5316\u3002\u5176\u4e2d\u5305\u62ec\u8fde\u63a5\u6c60\u7684\u6027\u80fd\u4f18\u5316\u3001\u5bf9\u591a\u4e2aHTTP\/3\u8fde\u63a5\u7684\u652f\u6301\u3001Windows\u4ee3\u7406\u7684\u81ea\u52a8\u66f4\u65b0\uff0c\u4ee5\u53ca\u91cd\u8981\u7684\u793e\u533a\u8d21\u732e\u3002\u00a0<\/span><\/p>\n

\u8fde\u63a5\u6c60<\/b><\/span><\/h2>\n

\u5728\u6b64\u7248\u672c\u4e2d\uff0c\u6211\u4eec\u5bf9HTTP\u8fde\u63a5\u6c60\u8fdb\u884c\u4e86\u4e24\u9879\u663e\u8457\u7684\u6027\u80fd\u4f18\u5316\u3002\u00a0<\/span><\/p>\n

\u6211\u4eec\u589e\u52a0\u4e86\u5bf9\u591a\u4e2aHTTP\/3\u8fde\u63a5\u7684\u53ef\u9009\u652f\u6301\u3002\u6839\u636eRFC 9114\u6807\u51c6\u6587\u6863<\/a>\uff0c\u7531\u4e8e\u8fde\u63a5\u53ef\u4ee5\u591a\u8def\u590d\u7528\u5e76\u884c\u8bf7\u6c42\uff0c\u56e0\u6b64\u4e0d\u9f13\u52b1\u4f7f\u7528\u591a\u4e2aHTTP\/3\u8fde\u63a5\u5230\u5bf9\u7b49\u7aef\u3002\u7136\u800c\uff0c\u5728\u67d0\u4e9b\u573a\u666f\u4e0b\uff0c\u4f8b\u5982\u670d\u52a1\u5668\u5230\u670d\u52a1\u5668\u7684\u901a\u4fe1\uff0c\u5373\u4f7f\u8bf7\u6c42\u591a\u8def\u590d\u7528\uff0c\u5355\u4e00\u8fde\u63a5\u4e5f\u53ef\u80fd\u6210\u4e3a\u74f6\u9888\u3002\u6211\u4eec\u5728 HTTP\/2 \u4e2d\u770b\u5230\u4e86\u8fd9\u6837\u7684\u9650\u5236\uff08dotnet\/runtime#35088<\/a>\uff09\uff0c\u5b83\u540c\u6837\u5177\u6709\u5728\u5355\u4e00\u8fde\u63a5\u4e0a\u591a\u8def\u590d\u7528\u7684\u6982\u5ff5\u3002\u51fa\u4e8e\u540c\u6837\u7684\u539f\u56e0\uff08dotnet\/runtime#51775<\/a>\uff09\uff0c\u6211\u4eec\u51b3\u5b9a\u4e3aHTTP\/3\u5b9e\u73b0\u591a\u8fde\u63a5\u652f\u6301\uff08dotnet\/runtime#101535<\/a>\uff09\u3002\u00a0<\/span><\/p>\n

\u8be5\u5b9e\u73b0\u672c\u8eab\u5c3d\u53ef\u80fd\u8d34\u8fd1 HTTP\/2 \u591a\u8fde\u63a5\u673a\u5236\u7684\u884c\u4e3a\u3002\u5f53\u524d\uff0c\u5b83\u7684\u7b56\u7565\u662f\u4f18\u5148\u586b\u5145\u5df2\u6709\u8fde\u63a5\uff0c\u76f4\u5230\u8fbe\u5230\u5bf9\u7aef\u5141\u8bb8\u7684\u8bf7\u6c42\u4e0a\u9650\u540e\uff0c\u624d\u4f1a\u521b\u5efa\u65b0\u7684\u8fde\u63a5\u3002\u4e0d\u8fc7\uff0c\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u8fd9\u662f\u4e00\u4e2a\u5177\u4f53\u7684\u5b9e\u73b0\u7ec6\u8282\uff0c\u8be5\u884c\u4e3a\u5728\u672a\u6765\u53ef\u80fd\u4f1a\u6709\u6240\u53d8\u5316\u3002\u00a0<\/span><\/p>\n

\u7ed3\u679c\u662f\uff0c\u6211\u4eec\u7684\u57fa\u51c6\u6d4b\u8bd5\u663e\u793a\u6bcf\u79d2\u8bf7\u6c42\u6570\uff08RPS\uff09\u6709\u663e\u8457\u63d0\u5347\uff0c\u4ee5\u4e0b\u662f10,000\u4e2a\u5e76\u884c\u8bf7\u6c42\u7684\u5bf9\u6bd4\u7ed3\u679c\uff1a\u00a0<\/span><\/p>\n\n\n\n\n\n\n\n\n\n\n\n
\u5ba2\u6237\u7aef\u00a0<\/span><\/td>\n\u5355 HTTP\/3 \u8fde\u63a5\u00a0<\/span><\/td>\n\u591a HTTP\/3 \u8fde\u63a5\u00a0<\/span><\/td>\n<\/tr>\n
\u6700\u5927CPU\u4f7f\u7528\u7387(%)\u00a0<\/span><\/td>\n35\u00a0<\/span><\/td>\n92\u00a0<\/span><\/td>\n<\/tr>\n
\u6700\u5927\u6838\u5fc3\u4f7f\u7528\u7387(%)\u00a0<\/span><\/td>\n971\u00a0<\/span><\/td>\n2572\u00a0<\/span><\/td>\n<\/tr>\n
\u6700\u5927\u5de5\u4f5c\u96c6(MB)\u00a0<\/span><\/td>\n3810\u00a0<\/span><\/td>\n6491\u00a0<\/span><\/td>\n<\/tr>\n
\u6700\u5927\u79c1\u6709\u5185\u5b58(MB)\u00a0<\/span><\/td>\n4415\u00a0<\/span><\/td>\n7228\u00a0<\/span><\/td>\n<\/tr>\n
\u5904\u7406\u5668\u6570\u91cf\u00a0<\/span><\/td>\n28\u00a0<\/span><\/td>\n28\u00a0<\/span><\/td>\n<\/tr>\n
\u9996\u6b21\u8bf7\u6c42\u65f6\u957f(ms)\u00a0<\/span><\/td>\n519\u00a0<\/span><\/td>\n594\u00a0<\/span><\/td>\n<\/tr>\n
\u8bf7\u6c42\u6570\u00a0<\/span><\/td>\n345446\u00a0<\/span><\/td>\n4325325\u00a0<\/span><\/td>\n<\/tr>\n
\u5e73\u5747\u6bcf\u79d2\u54cd\u5e94\u6570\u00a0<\/span><\/td>\n23069\u00a0<\/span><\/td>\n288664\u00a0<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u8bf7\u6ce8\u610f\uff0c\u6700\u5927 CPU \u4f7f\u7528\u7387\u7684\u589e\u52a0\u610f\u5473\u7740 CPU \u5229\u7528\u7387\u66f4\u9ad8\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0cCPU \u6b63\u5728\u5fd9\u4e8e\u5904\u7406\u8bf7\u6c42\uff0c\u800c\u4e0d\u662f\u5904\u4e8e\u7a7a\u95f2\u72b6\u6001\u3002\u00a0<\/span><\/p>\n

\u53ef\u4ee5\u901a\u8fc7 SocketsHttpHandler<\/a> \u4e0a\u7684 EnableMultipleHttp3Connections<\/code> \u5c5e\u6027\u6765\u542f\u7528\u6b64\u529f\u80fd\uff1a\u00a0<\/span><\/p>\n

var client = new HttpClient(new SocketsHttpHandler\r\n{\r\n    EnableMultipleHttp3Connections = true\r\n});<\/code><\/span><\/pre>\n
\u6211\u4eec\u8fd8\u89e3\u51b3\u4e86 HTTP\/1.1 \u8fde\u63a5\u6c60\u4e2d\u7684\u9501\u4e89\u7528\u95ee\u9898\uff08dotnet\/runtime#70098<\/a>\uff09\u3002 \u6b64\u524d\uff0cHTTP\/1.1 \u8fde\u63a5\u6c60\u4f7f\u7528\u5355\u4e00\u9501\u6765\u7ba1\u7406\u8fde\u63a5\u5217\u8868\u548c\u5f85\u5904\u7406\u8bf7\u6c42\u961f\u5217\u3002\u5728\u9ad8\u541e\u5410\u91cf\u573a\u666f\u4e0b\uff0c\u7279\u522b\u662f\u5728\u62e5\u6709\u5927\u91cf CPU \u6838\u5fc3\u7684\u673a\u5668\u4e0a\uff0c\u8fd9\u4e2a\u9501\u6210\u4e3a\u4e86\u6027\u80fd\u74f6\u9888\u3002 \u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff08dotnet\/runtime#99364<\/a>\uff09\uff0c\u6211\u4eec\u7528\u5e76\u53d1\u96c6\u5408\uff08Concurrent Collection\uff09\u66ff\u6362\u4e86\u539f\u672c\u5e26\u9501\u7684\u666e\u901a\u5217\u8868\u3002\u6211\u4eec\u9009\u62e9\u4e86 ConcurrentStack<\/a>\uff0c\u56e0\u4e3a\u5b83\u5728\u8bf7\u6c42\u7531\u6700\u65b0\u7684\u53ef\u7528\u8fde\u63a5\u5904\u7406\u65f6\u4fdd\u7559\u53ef\u89c2\u5bdf\u7684\u884c\u4e3a\uff0c\u8fd9\u5141\u8bb8\u5728\u8fde\u63a5\u7684\u751f\u547d\u5468\u671f<\/a>\u5230\u671f\u540e\u56de\u6536\u65e7\u8fde\u63a5\u3002 \u5728\u6211\u4eec\u7684\u57fa\u51c6\u6d4b\u8bd5\u4e2d\uff0c\u8fd9\u4e00\u4f18\u5316\u4f7f HTTP\/1.1 \u8bf7\u6c42\u7684\u541e\u5410\u91cf\u63d0\u9ad8\u4e8630%\u4ee5\u4e0a\u3002\u00a0<\/span><\/p>\n\n\n\n\n\n
\u5ba2\u6237\u7aef\u00a0<\/span><\/td>\n.NET 8.0\u00a0<\/span><\/td>\n.NET 9.0\u00a0<\/span><\/td>\n\u589e\u957f\u00a0<\/span><\/td>\n<\/tr>\n
\u8bf7\u6c42\u6570\u00a0<\/span><\/td>\n80028791\u00a0<\/span><\/td>\n107128778\u00a0<\/span><\/td>\n+33.86%\u00a0<\/span><\/td>\n<\/tr>\n
\u5e73\u5747\u6bcf\u79d2\u54cd\u5e94\u6570\u00a0<\/span><\/td>\n666886\u00a0<\/span><\/td>\n892749\u00a0<\/span><\/td>\n+33.87%\u00a0<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
Windows \u4e0a\u7684\u4ee3\u7406\u81ea\u52a8\u66f4\u65b0<\/b>\u00a0<\/span><\/h2>\n
\u5728\u5f00\u53d1\u8005\u4f7f\u7528\u65e9\u671f\u7248\u672c .NET \u7684\u5e94\u7528\u7a0b\u5e8f\u8fdb\u884c HTTP \u6d41\u91cf\u8c03\u8bd5\u65f6\uff0c\u4ed6\u4eec\u7684\u4e3b\u8981\u75db\u70b9\u4e4b\u4e00\u662f\u5e94\u7528\u7a0b\u5e8f\u4e0d\u4f1a\u54cd\u5e94 Windows \u4ee3\u7406\u8bbe\u7f6e\u7684\u66f4\u6539\uff08dotnet\/runtime#70098<\/a>\uff09\u3002\u00a0<\/span><\/p>\n
\u6b64\u524d\uff0c\u4ee3\u7406\u8bbe\u7f6e\u5728\u6bcf\u4e2a\u8fdb\u7a0b\u542f\u52a8\u65f6\u4ec5\u521d\u59cb\u5316\u4e00\u6b21\uff0c\u6ca1\u6709\u5408\u7406\u7684\u65b9\u5f0f\u6765\u5237\u65b0\u8fd9\u4e9b\u8bbe\u7f6e \u3002\u4f8b\u5982\uff0c\u5728 .NET 8 \u4e2d\uff0cHttpClient.DefaultProxy<\/a> \u6bcf\u6b21\u8bbf\u95ee\u90fd\u4f1a\u8fd4\u56de\u76f8\u540c\u7684\u5b9e\u4f8b\uff0c\u4e14\u4e0d\u4f1a\u91cd\u65b0\u83b7\u53d6\u4ee3\u7406\u8bbe\u7f6e\u3002\u56e0\u6b64\uff0c\u50cf Fiddler \u8fd9\u6837\u5c06\u81ea\u5df1\u8bbe\u7f6e\u4e3a\u7cfb\u7edf\u4ee3\u7406\u4ee5\u76d1\u542c\u6d41\u91cf\u7684\u5de5\u5177\uff0c\u65e0\u6cd5\u6355\u83b7\u5df2\u7ecf\u8fd0\u884c\u8fdb\u7a0b\u7684\u6d41\u91cf\u3002\u8fd9\u4e2a\u95ee\u9898\u5728 dotnet\/runtime#103364<\/a> \u4e2d\u5f97\u5230\u4e86\u7f13\u89e3\uff0c\u5176\u4e2d HttpClient.DefaultProxy<\/code> \u88ab\u8bbe\u7f6e\u4e3a\u4e00\u4e2aWindows\u4ee3\u7406\u5b9e\u4f8b\uff0c\u8be5\u5b9e\u4f8b\u4f1a\u76d1\u542c\u6ce8\u518c\u8868\u7684\u53d8\u5316\uff0c\u5e76\u5728\u6536\u5230\u901a\u77e5\u65f6\u91cd\u65b0\u52a0\u8f7d\u4ee3\u7406\u8bbe\u7f6e\u3002\u00a0<\/span><\/p>\n
\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/span><\/p>\n
while (true)\r\n{\r\n    using var resp = await client.GetAsync(\"https:\/\/httpbin.org\/\");\r\n    Console.WriteLine(HttpClient.DefaultProxy.GetProxy(new Uri(\"https:\/\/httpbin.org\/\"))?.ToString() ?? \"null\");\r\n    await Task.Delay(1_000);\r\n}<\/code><\/span><\/pre>\n
\u53ef\u4ee5\u4ea7\u751f\u5982\u4e0b\u8f93\u51fa\uff1a<\/span><\/p>\n
null\r\n\/\/ After Fiddler's \"System Proxy\" is turned on.\r\nhttp:\/\/127.0.0.1:8866\/<\/code><\/span><\/pre>\n
\u8bf7\u6ce8\u610f\uff0c\u6b64\u66f4\u6539\u4ec5\u9002\u7528\u4e8e Windows\uff0c\u56e0\u4e3a\u5b83\u5177\u6709\u7edf\u4e00\u7684\u5168\u5c40\u7cfb\u7edf\u4ee3\u7406\u8bbe\u7f6e<\/a>\u6982\u5ff5\u3002\u800c Linux \u53ca\u5176\u4ed6\u57fa\u4e8e UNIX \u7684\u7cfb\u7edf\u4ec5\u5141\u8bb8\u901a\u8fc7\u73af\u5883\u53d8\u91cf\u8bbe\u7f6e\u4ee3\u7406\uff0c\u8fd9\u4e9b\u73af\u5883\u53d8\u91cf\u5728\u8fdb\u7a0b\u8fd0\u884c\u671f\u95f4\u65e0\u6cd5\u66f4\u6539\u3002\u00a0<\/span><\/p>\n
\u793e\u533a\u8d21\u732e<\/b>\u00a0<\/span><\/h2>\n
\u6211\u4eec\u60f3\u611f\u8c22\u793e\u533a\u505a\u51fa\u7684\u8d21\u732e\u3002\u00a0<\/span><\/p>\n
HttpContent.LoadIntoBufferAsync<\/a> \u4e2d\u7f3a\u5c11 CancellationToken<\/a> \u91cd\u8f7d\u3002@andrewhickman-aveva<\/a> \u7684 API \u63d0\u6848 (dotnet\/runtime#102659<\/a>) \u548c @manandre<\/a> \u7684\u5b9e\u73b0 (dotnet\/runtime#103991<\/a>) \u89e3\u51b3\u4e86\u6b64\u95ee\u9898\u3002\u00a0<\/span><\/p>\n
\u53e6\u4e00\u4e2a\u66f4\u6539\u4f18\u5316\u4e86 SocketsHttpHandler<\/a> \u548c HttpClientHandler<\/a> \u4e0a\u7684 MaxResponseHeadersLength<\/code> \u5c5e\u6027\u7684\u5355\u4f4d\u4e0d\u4e00\u81f4\u95ee\u9898\uff08dotnet\/runtime#75137<\/a>\uff09\u3002\u6240\u6709\u5176\u4ed6\u7684\u5927\u5c0f\u548c\u957f\u5ea6\u5c5e\u6027\u90fd\u88ab\u89e3\u91ca\u4e3a\u5b57\u8282\uff0c\u800c\u8fd9\u4e2a\u5c5e\u6027\u5374\u88ab\u89e3\u91ca\u4e3a\u5343\u5b57\u8282\u3002\u7531\u4e8e\u4e0d\u80fd\u6539\u53d8\u5b9e\u9645\u884c\u4e3a\u4ee5\u4fdd\u6301\u5411\u540e\u517c\u5bb9\u6027\uff0c\u56e0\u6b64\u901a\u8fc7\u5b9e\u73b0\u4e00\u4e2a\u5206\u6790\u5668\uff08dotnet\/roslyn-analyzers#6796<\/a>\uff09\u6765\u89e3\u51b3\u4e86\u8fd9\u4e2a\u95ee\u9898\u3002\u8be5\u5206\u6790\u5668\u65e8\u5728\u786e\u4fdd\u7528\u6237\u610f\u8bc6\u5230\u63d0\u4f9b\u7684\u503c\u662f\u4ee5\u5343\u5b57\u8282\u4e3a\u5355\u4f4d\u7684\uff0c\u5e76\u4e14\u5982\u679c\u7528\u6cd5\u8868\u660e\u6709\u8bef\uff0c\u5219\u4f1a\u53d1\u51fa\u8b66\u544a\u3002\u00a0<\/span><\/p>\n
\u5982\u679c\u8be5\u503c\u9ad8\u4e8e\u67d0\u4e2a\u9608\u503c\uff0c\u5219\u5982\u4e0b\u6240\u793a\uff1a\u00a0<\/span><\/p>\n
\"Image<\/a><\/span><\/p>\n
\u8be5\u5206\u6790\u5668\u7531 @amiru3f<\/a> \u5b9e\u73b0\u3002\u00a0<\/span><\/p>\n
QUIC<\/b>\u00a0<\/span><\/h2>\n
\u5728 .NET 9 \u4e2d\uff0cQUIC \u9886\u57df\u7684\u663e\u8457\u53d8\u5316\u5305\u62ec\u5c06 QUIC \u5e93\u516c\u5f00\u3001\u4e3a\u8fde\u63a5\u63d0\u4f9b\u66f4\u591a\u914d\u7f6e\u9009\u9879\u4ee5\u53ca\u591a\u9879\u6027\u80fd\u4f18\u5316\u3002\u00a0<\/span><\/p>\n
\u516c\u5171API<\/b>\u00a0<\/span><\/h2>\n
\u4ece\u6b64\u7248\u672c\u5f00\u59cb\uff0cSystem.Net.Quic<\/code> \u4e0d\u518d\u9690\u85cf\u5728 PreviewFeature<\/a> \u540e\u9762\uff0c\u6240\u6709\u7684 API \u90fd\u662f\u968f\u65f6\u53ef\u7528\u7684\uff0c\u65e0\u9700\u6dfb\u52a0\u4efb\u4f55\u53ef\u9009\u5f00\u5173\uff08dotnet\/runtime#104227<\/a>\uff09\u3002\u00a0<\/span><\/p>\n
QUIC\u8fde\u63a5\u9009\u9879\u00a0<\/strong><\/span><\/p>\n
\u6211\u4eec\u6269\u5c55\u4e86 QuicConnection<\/a> \u7684\u914d\u7f6e\u9009\u9879\uff08dotnet\/runtime#72984<\/a>\uff09\u3002\u8be5\u5b9e\u73b0\uff08dotnet\/runtime#94211<\/a>\uff09\u5411 QuicConnectionOptions<\/a> \u4e2d\u6dfb\u52a0\u4e86\u4e09\u4e2a\u65b0\u5c5e\u6027\uff1a\u00a0<\/span><\/p>\n