{"id":123830,"date":"2026-11-08T08:09:22","date_gmt":"2026-11-08T00:09:22","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/123830.html"},"modified":"2026-11-08T08:09:22","modified_gmt":"2026-11-08T00:09:22","slug":"%e3%80%90linux%e7%bd%91%e7%bb%9c%e3%80%91tcp-%e6%9c%8d%e5%8a%a1%e5%99%a8%e5%a6%82%e4%bd%95%e5%b9%b6%e5%8f%91%e5%a4%84%e7%90%86%e5%a4%9a%e4%b8%aa%e5%ae%a2%e6%88%b7%e7%ab%af%ef%bc%9f%e4%bb%8e-fork-2","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/123830.html","title":{"rendered":"\u3010Linux\u7f51\u7edc\u3011TCP \u670d\u52a1\u5668\u5982\u4f55\u5e76\u53d1\u5904\u7406\u591a\u4e2a\u5ba2\u6237\u7aef\uff1f\u4ece fork\u3001\u50f5\u5c38\u8fdb\u7a0b\u5230\u53cc\u91cd fork"},"content":{"rendered":"

\"\u5c01\u9762\"<\/p>\n

🔥\u4e2a\u4eba\u4e3b\u9875：\u7231\u548c\u51b0\u9614\u4e50<\/font> 📚\u4e13\u680f\u4f20\u9001\u95e8：\u300a\u6570\u636e\u7ed3\u6784\u4e0e\u7b97\u6cd5\u300b \u3001C++\u3001 \u300aLinux\u64cd\u4f5c\u7cfb\u7edf\u300b 🐶\u5b66\u4e60\u65b9\u5411：C++\u65b9\u5411\u5b66\u4e60\u7231\u597d\u8005<\/font> \u2b50\u4eba\u751f\u683c\u8a00：\u5f97\u77e5\u5766\u7136 ，\u5931\u4e4b\u6de1\u7136 <\/font><\/p>\n

\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

\n

🏠\u535a\u4e3b\u7b80\u4ecb \"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n<\/p>\n

\u6587\u7ae0\u76ee\u5f55<\/h4>\n
    \n
  • \u524d\u8a00<\/li>\n
  • \u4e00\u3001\u7ebf\u7a0b\u4e3a\u4ec0\u4e48\u80fd\u76f4\u63a5\u4f7f\u7528\u901a\u4fe1 fd<\/li>\n
  • \n
      \n
    • 1.1 \u7ebf\u7a0b\u5171\u4eab\u8fdb\u7a0b\u7684\u5927\u90e8\u5206\u8d44\u6e90<\/li>\n
    • 1.2 \u5de5\u4f5c\u7ebf\u7a0b\u4e0d\u80fd\u968f\u610f\u5173\u95ed\u76d1\u542c fd<\/li>\n<\/ul>\n<\/li>\n
    • \u4e8c\u3001\u7ebf\u7a0b\u5165\u53e3\u4e3a\u4ec0\u4e48\u901a\u5e38\u662f\u9759\u6001\u51fd\u6570<\/li>\n
    • \n
        \n
      • 2.1 \u539f\u751f\u7ebf\u7a0b\u51fd\u6570\u7b7e\u540d<\/li>\n
      • 2.2 \u628a\u8fde\u63a5\u4fe1\u606f\u653e\u8fdb `ThreadData`<\/li>\n
      • 2.3 \u5206\u79bb\u7ebf\u7a0b\u8fd8\u662f\u56de\u6536\u7ebf\u7a0b<\/li>\n<\/ul>\n<\/li>\n
      • \u4e09\u3001\u628a\u7f51\u7edc\u6536\u53d1\u4e0e\u4e1a\u52a1\u5904\u7406\u5206\u5f00<\/li>\n
      • \n
          \n
        • 3.1 \u56de\u8c03\u51fd\u6570<\/li>\n
        • 3.2 \u5f53\u524d\u793a\u4f8b\u7684\u8fb9\u754c<\/li>\n<\/ul>\n<\/li>\n
        • \u56db\u3001\u5b8c\u6574\u7684\u591a\u7ebf\u7a0b TCP \u670d\u52a1\u5668<\/li>\n
        • \u4e94\u3001\u53d7\u9650\u8fdc\u7a0b\u547d\u4ee4\u4e1a\u52a1<\/li>\n
        • \n
            \n
          • 5.1 \u4e3a\u4ec0\u4e48\u5fc5\u987b\u4f7f\u7528\u767d\u540d\u5355<\/li>\n
          • 5.2 `popen` \u5982\u4f55\u53d6\u5f97\u547d\u4ee4\u8f93\u51fa<\/li>\n
          • 5.3 `Command.hpp`<\/li>\n
          • 5.4 `TcpServer.cc`<\/li>\n
          • 5.5 Makefile<\/li>\n<\/ul>\n<\/li>\n
          • \u516d\u3001\u8fd9\u4e00\u7248\u8fd8\u4e0d\u80fd\u5f53\u4f5c\u6b63\u5f0f\u8fdc\u7a0b\u7ba1\u7406\u5de5\u5177<\/li>\n
          • \u4e03\u3001\u591a\u7ebf\u7a0b\u6a21\u578b\u7684\u4f18\u7f3a\u70b9<\/li>\n
          • \u603b\u7ed3<\/li>\n<\/ul>\n
            \n

            \u524d\u8a00<\/h2>\n

            \u591a\u8fdb\u7a0b\u670d\u52a1\u5668\u80fd\u540c\u65f6\u670d\u52a1\u591a\u4e2a\u5ba2\u6237\u7aef，\u4f46\u6bcf\u6761\u8fde\u63a5\u90fd\u521b\u5efa\u8fdb\u7a0b，\u5730\u5740\u7a7a\u95f4\u548c\u8c03\u5ea6\u6210\u672c\u8f83\u9ad8\u3002TCP \u670d\u52a1\u5668\u4e5f\u53ef\u4ee5\u4e3a\u6bcf\u6761\u8fde\u63a5\u521b\u5efa\u7ebf\u7a0b：\u4e3b\u7ebf\u7a0b\u8d1f\u8d23 accept，\u5de5\u4f5c\u7ebf\u7a0b\u8d1f\u8d23\u5f53\u524d\u901a\u4fe1 fd\u3002<\/p>\n

            \u7ebf\u7a0b\u7248\u672c\u770b\u8d77\u6765\u53ea\u662f\u628a fork \u6362\u6210 pthread_create，\u5b9e\u9645\u5374\u6709\u4e00\u4e2a\u91cd\u8981\u533a\u522b：\u540c\u4e00\u8fdb\u7a0b\u4e2d\u7684\u7ebf\u7a0b\u5171\u4eab\u6587\u4ef6\u63cf\u8ff0\u7b26\u8868\u3002<\/p>\n

            \u8fd9\u610f\u5473\u7740\u5de5\u4f5c\u7ebf\u7a0b\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528\u4e3b\u7ebf\u7a0b accept \u5f97\u5230\u7684 fd，\u4f46\u4e5f\u610f\u5473\u7740\u67d0\u4e2a\u7ebf\u7a0b\u6267\u884c close \u4f1a\u5f71\u54cd\u6574\u4e2a\u8fdb\u7a0b\u3002\u672c\u6587\u5148\u628a\u7ebf\u7a0b\u6a21\u578b\u5199\u6e05\u695a，\u518d\u5728\u5b83\u4e0a\u9762\u52a0\u5165\u4e00\u4e2a\u53d7\u9650\u5236\u7684\u8fdc\u7a0b\u547d\u4ee4\u4e1a\u52a1\u3002<\/p>\n

            \n

            \u4e00\u3001\u7ebf\u7a0b\u4e3a\u4ec0\u4e48\u80fd\u76f4\u63a5\u4f7f\u7528\u901a\u4fe1 fd<\/h2>\n

            1.1 \u7ebf\u7a0b\u5171\u4eab\u8fdb\u7a0b\u7684\u5927\u90e8\u5206\u8d44\u6e90<\/h3>\n

            \u521b\u5efa\u7ebf\u7a0b\u4e0d\u4f1a\u590d\u5236\u4e00\u4efd\u65b0\u7684\u8fdb\u7a0b\u5730\u5740\u7a7a\u95f4\u3002\u7ebf\u7a0b\u62e5\u6709\u72ec\u7acb\u7684\u6808\u3001\u5bc4\u5b58\u5668\u4e0a\u4e0b\u6587\u548c\u8c03\u5ea6\u4fe1\u606f，\u4f46\u4f1a\u5171\u4eab\u8fdb\u7a0b\u4e2d\u7684\u4ee3\u7801\u3001\u5168\u5c40\u6570\u636e\u3001\u5806\u548c\u6587\u4ef6\u63cf\u8ff0\u7b26\u8868\u3002<\/p>\n

            \u4e3b\u7ebf\u7a0b\u6267\u884c：<\/p>\n

            int<\/span> sockfd =<\/span> accept<\/span>(<\/span>listen_sock,<\/span> .<\/span>.<\/span>.<\/span>)<\/span>;<\/span><\/p>\n

            \u4e4b\u540e\u521b\u5efa\u5de5\u4f5c\u7ebf\u7a0b，\u53ea\u8981\u628a sockfd \u4f5c\u4e3a\u53c2\u6570\u4f20\u8fdb\u53bb，\u5de5\u4f5c\u7ebf\u7a0b\u5c31\u80fd\u76f4\u63a5\u8c03\u7528 read \u548c write\u3002<\/p>\n

            \u8fd9\u548c\u591a\u8fdb\u7a0b\u4e0d\u540c\u3002\u591a\u8fdb\u7a0b\u901a\u8fc7 fork \u7ee7\u627f\u63cf\u8ff0\u7b26\u8868\u526f\u672c，\u7236\u5b50\u8fdb\u7a0b\u5206\u522b\u5173\u95ed\u81ea\u5df1\u7684\u63cf\u8ff0\u7b26；\u7ebf\u7a0b\u8bbf\u95ee\u7684\u662f\u540c\u4e00\u5f20\u63cf\u8ff0\u7b26\u8868，\u6ca1\u6709\u201c\u6bcf\u4e2a\u7ebf\u7a0b\u81ea\u5df1\u7684\u4e00\u4efd fd\u201d\u3002<\/p>\n

            1.2 \u5de5\u4f5c\u7ebf\u7a0b\u4e0d\u80fd\u968f\u610f\u5173\u95ed\u76d1\u542c fd<\/h3>\n

            \u5728\u591a\u8fdb\u7a0b\u7248\u672c\u4e2d，\u5b50\u8fdb\u7a0b\u5173\u95ed listen_sock，\u4e0d\u4f1a\u8ba9\u7236\u8fdb\u7a0b\u5931\u53bb\u76d1\u542c\u80fd\u529b，\u56e0\u4e3a\u7236\u8fdb\u7a0b\u4ecd\u6709\u81ea\u5df1\u7684\u63cf\u8ff0\u7b26\u8868\u9879\u3002<\/p>\n

            \u5728\u7ebf\u7a0b\u7248\u672c\u4e2d，\u5982\u679c\u5de5\u4f5c\u7ebf\u7a0b\u8c03\u7528：<\/p>\n

            close<\/span>(<\/span>listen_sock)<\/span>;<\/span><\/p>\n

            \u8fd9\u4e2a\u76d1\u542c fd \u4f1a\u4ece\u6574\u4e2a\u8fdb\u7a0b\u7684\u63cf\u8ff0\u7b26\u8868\u4e2d\u5173\u95ed，\u4e3b\u7ebf\u7a0b\u4e0b\u4e00\u6b21 accept \u5c31\u65e0\u6cd5\u7ee7\u7eed\u5de5\u4f5c\u3002<\/p>\n

            \u6240\u4ee5\u7ebf\u7a0b\u53ea\u5904\u7406\u4ea4\u7ed9\u5b83\u7684\u901a\u4fe1 fd，\u4e0d\u8981\u5173\u95ed\u8fdb\u7a0b\u4ecd\u5728\u4f7f\u7528\u7684\u76d1\u542c fd\u3002<\/p>\n

            \u7ebf\u7a0b\u5171\u4eab\u6587\u4ef6\u63cf\u8ff0\u7b26\u8868\u3002\u4e00\u4e2a\u7ebf\u7a0b\u5173\u95ed fd，\u5176\u4ed6\u7ebf\u7a0b\u4e5f\u4e0d\u80fd\u518d\u4f7f\u7528\u5b83；\u591a\u8fdb\u7a0b\u4e2d\u7684\u201c\u5404\u5173\u5404\u7684\u5f15\u7528\u201d\u4e0d\u80fd\u539f\u6837\u5957\u5230\u591a\u7ebf\u7a0b\u6a21\u578b\u3002<\/b><\/font><\/p>\n

            \u4e8c\u3001\u7ebf\u7a0b\u5165\u53e3\u4e3a\u4ec0\u4e48\u901a\u5e38\u662f\u9759\u6001\u51fd\u6570<\/h2>\n

            2.1 \u539f\u751f\u7ebf\u7a0b\u51fd\u6570\u7b7e\u540d<\/h3>\n

            pthread_create \u8981\u6c42\u7ebf\u7a0b\u5165\u53e3\u662f\u666e\u901a\u51fd\u6570\u6307\u9488：<\/p>\n

            void<\/span>*<\/span> Routine<\/span>(<\/span>void<\/span>*<\/span> args)<\/span>;<\/span><\/p>\n

            \u666e\u901a\u975e\u9759\u6001\u6210\u5458\u51fd\u6570\u81ea\u5e26\u9690\u85cf\u7684 this \u53c2\u6570，\u7c7b\u578b\u4e0d\u7b26\u5408\u8981\u6c42\u3002\u56e0\u6b64\u53ef\u4ee5\u628a\u5165\u53e3\u58f0\u660e\u6210 static，\u518d\u901a\u8fc7\u53c2\u6570\u628a\u5bf9\u8c61\u5730\u5740\u4f20\u8fdb\u53bb\u3002<\/p>\n

            2.2 \u628a\u8fde\u63a5\u4fe1\u606f\u653e\u8fdb ThreadData<\/h3>\n

            \u7ebf\u7a0b\u81f3\u5c11\u9700\u8981：<\/p>\n

              \n
            • \u5f53\u524d\u5ba2\u6237\u7aef\u901a\u4fe1 fd；<\/li>\n
            • \u5ba2\u6237\u7aef\u5730\u5740；<\/li>\n
            • \u670d\u52a1\u5668\u5bf9\u8c61\u6307\u9488，\u7528\u6765\u8c03\u7528\u6210\u5458\u51fd\u6570\u3002<\/li>\n<\/ul>\n

              struct<\/span> ThreadData<\/span> {<\/span>
              \n TcpServer*<\/span> server;<\/span>
              \n int<\/span> sockfd;<\/span>
              \n InetAddr peer;<\/span><\/p>\n

              ThreadData<\/span>(<\/span>TcpServer*<\/span> s,<\/span>
              \n int<\/span> fd,<\/span>
              \n const<\/span> InetAddr&<\/span> addr)<\/span>
              \n :<\/span> server<\/span>(<\/span>s)<\/span>,<\/span> sockfd<\/span>(<\/span>fd)<\/span>,<\/span> peer<\/span>(<\/span>addr)<\/span> {<\/span>}<\/span>
              \n}<\/span>;<\/span><\/p>\n

              \u4e0d\u80fd\u628a accept \u5faa\u73af\u4e2d\u7684\u5c40\u90e8\u53d8\u91cf\u5730\u5740\u76f4\u63a5\u4f20\u7ed9\u7ebf\u7a0b\u3002\u4e3b\u7ebf\u7a0b\u5f88\u5feb\u8fdb\u5165\u4e0b\u4e00\u8f6e\u5faa\u73af，\u5c40\u90e8\u53d8\u91cf\u53ef\u80fd\u88ab\u8986\u76d6，\u5de5\u4f5c\u7ebf\u7a0b\u6700\u7ec8\u8bfb\u5230\u53e6\u4e00\u4f4d\u5ba2\u6237\u7aef\u7684\u6570\u636e\u3002<\/p>\n

              \u56e0\u6b64\u6bcf\u6761\u8fde\u63a5\u521b\u5efa\u72ec\u7acb ThreadData，\u7ebf\u7a0b\u7ed3\u675f\u540e\u518d\u91ca\u653e\u3002<\/p>\n

              2.3 \u5206\u79bb\u7ebf\u7a0b\u8fd8\u662f\u56de\u6536\u7ebf\u7a0b<\/h3>\n

              \u82e5\u4e3b\u7ebf\u7a0b\u6bcf\u521b\u5efa\u4e00\u4e2a\u5de5\u4f5c\u7ebf\u7a0b\u5c31\u7acb\u5373 pthread_join，\u5b83\u4ecd\u8981\u7b49\u5f53\u524d\u8fde\u63a5\u7ed3\u675f，\u670d\u52a1\u5668\u4f1a\u91cd\u65b0\u53d8\u6210\u4e32\u884c\u3002<\/p>\n

              \u4e00\u8fde\u63a5\u4e00\u7ebf\u7a0b\u7684\u7b80\u5355\u7248\u672c\u53ef\u4ee5\u5728\u7ebf\u7a0b\u5165\u53e3\u4e2d\u5206\u79bb\u81ea\u5df1：<\/p>\n

              pthread_detach<\/span>(<\/span>pthread_self<\/span>(<\/span>)<\/span>)<\/span>;<\/span><\/p>\n

              \u5206\u79bb\u7ebf\u7a0b\u9000\u51fa\u540e，\u7cfb\u7edf\u81ea\u52a8\u56de\u6536\u7ebf\u7a0b\u8d44\u6e90，\u4e3b\u7ebf\u7a0b\u4e0d\u518d join\u3002<\/p>\n

              \u4f46\u5206\u79bb\u4e0d\u4ee3\u8868\u201c\u53ef\u4ee5\u4e0d\u7ba1\u8d44\u6e90\u201d\u3002\u901a\u4fe1 fd\u3001\u5806\u4e0a\u7684 ThreadData \u4ee5\u53ca\u4e1a\u52a1\u5bf9\u8c61\u751f\u547d\u5468\u671f\u4ecd\u7136\u8981\u7531\u4ee3\u7801\u6b63\u786e\u5904\u7406\u3002<\/p>\n

              \u4e09\u3001\u628a\u7f51\u7edc\u6536\u53d1\u4e0e\u4e1a\u52a1\u5904\u7406\u5206\u5f00<\/h2>\n

              3.1 \u56de\u8c03\u51fd\u6570<\/h3>\n

              TCP \u670d\u52a1\u5668\u8d1f\u8d23：<\/p>\n

              socket -> bind -> listen -> accept -> read\/write<\/p>\n

              \u6536\u5230\u5b57\u7b26\u4e32\u4ee5\u540e\u7a76\u7adf\u662f\u56de\u663e\u3001\u7ffb\u8bd1\u8fd8\u662f\u6267\u884c\u547d\u4ee4，\u4e0d\u5e94\u8be5\u5199\u6b7b\u5728\u7f51\u7edc\u6846\u67b6\u4e2d\u3002\u53ef\u4ee5\u5b9a\u4e49\u56de\u8c03：<\/p>\n

              using<\/span> Handler =<\/span> std::<\/span>function<<\/span>std::<\/span>string<\/span>(<\/span>
              \n const<\/span> std::<\/span>string&<\/span>,<\/span>
              \n const<\/span> InetAddr&<\/span>)<\/span>><\/span>;<\/span><\/p>\n

              \u670d\u52a1\u5668\u8bfb\u53d6\u8bf7\u6c42\u540e\u8c03\u7528：<\/p>\n

              std::<\/span>string response =<\/span> handler_<\/span>(<\/span>request,<\/span> peer)<\/span>;<\/span><\/p>\n

              \u7f51\u7edc\u5c42\u53ea\u8d1f\u8d23\u628a\u54cd\u5e94\u5199\u56de\u53bb\u3002<\/p>\n

              3.2 \u5f53\u524d\u793a\u4f8b\u7684\u8fb9\u754c<\/h3>\n

              \u76ee\u524d\u4ecd\u7136\u628a\u4e00\u6b21 read \u5f97\u5230\u7684\u5185\u5bb9\u5f53\u4f5c\u4e00\u6761\u5b8c\u6574\u547d\u4ee4，\u8fd9\u53ea\u662f\u4e3a\u4e86\u5148\u89c2\u5bdf TCP \u7f16\u7a0b\u6d41\u7a0b\u3002<\/p>\n

              TCP \u662f\u5b57\u8282\u6d41：<\/p>\n

                \n
              • \u4e00\u6761\u547d\u4ee4\u53ef\u80fd\u88ab\u5206\u6210\u591a\u6b21\u8bfb\u53d6；<\/li>\n
              • \u591a\u6761\u547d\u4ee4\u4e5f\u53ef\u80fd\u5728\u4e00\u6b21\u8bfb\u53d6\u4e2d\u540c\u65f6\u5230\u8fbe；<\/li>\n
              • \u547d\u4ee4\u6267\u884c\u7ed3\u679c\u53ef\u80fd\u8d85\u8fc7\u5355\u6b21\u7f13\u51b2\u533a\u5927\u5c0f\u3002<\/li>\n<\/ul>\n

                \u6b63\u5f0f\u4e1a\u52a1\u5fc5\u987b\u8bbe\u8ba1\u5e94\u7528\u5c42\u534f\u8bae，\u4f8b\u5982\u957f\u5ea6\u5b57\u6bb5\u3001\u5206\u9694\u7b26\u6216\u56fa\u5b9a\u5934\u90e8\u3002\u4e0b\u4e00\u7ae0\u8282\u201c\u5e94\u7528\u5c42\u81ea\u5b9a\u4e49\u534f\u8bae\u4e0e\u5e8f\u5217\u5316\u201d\u4f1a\u4e13\u95e8\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u3002<\/p>\n

                TCP \u53ef\u9760\u4f20\u8f93\u7684\u662f\u5b57\u8282\u5e8f\u5217，\u4e0d\u8d1f\u8d23\u66ff\u5e94\u7528\u5c42\u4fdd\u5b58\u6d88\u606f\u8fb9\u754c\u3002\u793a\u4f8b\u80fd\u56de\u663e，\u4e0d\u7b49\u4e8e\u534f\u8bae\u8bbe\u8ba1\u5df2\u7ecf\u5b8c\u6210\u3002<\/b><\/font><\/p>\n

                \u56db\u3001\u5b8c\u6574\u7684\u591a\u7ebf\u7a0b TCP \u670d\u52a1\u5668<\/h2>\n

                \u7ee7\u7eed\u590d\u7528\u7b2c\u4e00\u7bc7\u7684 Common.hpp \u548c InetAddr.hpp\u3002\u4e0b\u9762\u7ed9\u51fa\u591a\u7ebf\u7a0b\u7248\u672c\u7684 TcpServer.hpp\u3002<\/p>\n

                #<\/span>pragma<\/span> once<\/span><\/span><\/p>\n

                #<\/span>include<\/span> "Common.hpp"<\/span><\/span>
                \n#<\/span>include<\/span> "InetAddr.hpp"<\/span><\/span><\/p>\n

                #<\/span>include<\/span> <pthread.h><\/span><\/span><\/p>\n

                #<\/span>include<\/span> <functional><\/span><\/span>
                \n#<\/span>include<\/span> <iostream><\/span><\/span>
                \n#<\/span>include<\/span> <memory><\/span><\/span>
                \n#<\/span>include<\/span> <utility><\/span><\/span><\/p>\n

                using<\/span> Handler =<\/span> std::<\/span>function<<\/span>std::<\/span>string<\/span>(<\/span>
                \n const<\/span> std::<\/span>string&<\/span>,<\/span>
                \n const<\/span> InetAddr&<\/span>)<\/span>><\/span>;<\/span><\/p>\n

                class<\/span> TcpServer<\/span> :<\/span> public<\/span> NoCopy<\/span><\/span> {<\/span>
                \nprivate<\/span>:<\/span>
                \n struct<\/span> ThreadData<\/span> {<\/span>
                \n TcpServer*<\/span> server;<\/span>
                \n int<\/span> sockfd;<\/span>
                \n InetAddr peer;<\/span><\/p>\n

                ThreadData<\/span>(<\/span>TcpServer*<\/span> s,<\/span>
                \n int<\/span> fd,<\/span>
                \n const<\/span> InetAddr&<\/span> addr)<\/span>
                \n :<\/span> server<\/span>(<\/span>s)<\/span>,<\/span> sockfd<\/span>(<\/span>fd)<\/span>,<\/span> peer<\/span>(<\/span>addr)<\/span> {<\/span>}<\/span>
                \n }<\/span>;<\/span><\/p>\n

                public<\/span>:<\/span>
                \n TcpServer<\/span>(<\/span>uint16_t<\/span> port,<\/span> Handler handler)<\/span>
                \n :<\/span> port_<\/span>(<\/span>port)<\/span>,<\/span> handler_<\/span>(<\/span>std::<\/span>move<\/span>(<\/span>handler)<\/span>)<\/span> {<\/span>}<\/span><\/p>\n

                bool<\/span> Init<\/span>(<\/span>)<\/span> {<\/span>
                \n listen_sock_ =<\/span> socket<\/span>(<\/span>AF_INET,<\/span> SOCK_STREAM,<\/span> 0<\/span>)<\/span>;<\/span>
                \n if<\/span> (<\/span>listen_sock_ <<\/span> 0<\/span>)<\/span> {<\/span>
                \n std::<\/span>cerr <<<\/span> "socket error: "<\/span> <<<\/span> strerror<\/span>(<\/span>errno)<\/span> <<<\/span> std::<\/span>endl;<\/span>
                \n return<\/span> false<\/span>;<\/span>
                \n }<\/span><\/p>\n

                int<\/span> enable =<\/span> 1<\/span>;<\/span>
                \n setsockopt<\/span>(<\/span>listen_sock_,<\/span>
                \n SOL_SOCKET,<\/span>
                \n SO_REUSEADDR,<\/span>
                \n &<\/span>enable,<\/span>
                \n sizeof<\/span>(<\/span>enable)<\/span>)<\/span>;<\/span><\/p>\n

                InetAddr local<\/span>(<\/span>port_)<\/span>;<\/span>
                \n if<\/span> (<\/span>bind<\/span>(<\/span>listen_sock_,<\/span> local.<\/span>AddrPtr<\/span>(<\/span>)<\/span>,<\/span> local.<\/span>Length<\/span>(<\/span>)<\/span>)<\/span> <<\/span> 0<\/span>)<\/span> {<\/span>
                \n std::<\/span>cerr <<<\/span> "bind error: "<\/span> <<<\/span> strerror<\/span>(<\/span>errno)<\/span> <<<\/span> std::<\/span>endl;<\/span>
                \n return<\/span> false<\/span>;<\/span>
                \n }<\/span><\/p>\n

                if<\/span> (<\/span>listen<\/span>(<\/span>listen_sock_,<\/span> 8<\/span>)<\/span> <<\/span> 0<\/span>)<\/span> {<\/span>
                \n std::<\/span>cerr <<<\/span> "listen error: "<\/span> <<<\/span> strerror<\/span>(<\/span>errno)<\/span> <<<\/span> std::<\/span>endl;<\/span>
                \n return<\/span> false<\/span>;<\/span>
                \n }<\/span>
                \n return<\/span> true<\/span>;<\/span>
                \n }<\/span><\/p>\n

                void<\/span> Run<\/span>(<\/span>)<\/span> {<\/span>
                \n for<\/span> (<\/span>;<\/span>;<\/span>)<\/span> {<\/span>
                \n sockaddr_in peer_addr{<\/span>}<\/span>;<\/span>
                \n socklen_t len =<\/span> sizeof<\/span>(<\/span>peer_addr)<\/span>;<\/span><\/p>\n

                int<\/span> sockfd =<\/span> accept<\/span>(<\/span>
                \n listen_sock_,<\/span>
                \n reinterpret_cast<\/span><<\/span>sockaddr*<\/span>><\/span><\/span><\/span>(<\/span>&<\/span>peer_addr)<\/span>,<\/span>
                \n &<\/span>len)<\/span>;<\/span><\/p>\n

                if<\/span> (<\/span>sockfd <<\/span> 0<\/span>)<\/span> {<\/span>
                \n if<\/span> (<\/span>errno ==<\/span> EINTR)<\/span> {<\/span>
                \n continue<\/span>;<\/span>
                \n }<\/span>
                \n std::<\/span>cerr <<<\/span> "accept error: "<\/span>
                \n <<<\/span> strerror<\/span>(<\/span>errno)<\/span> <<<\/span> std::<\/span>endl;<\/span>
                \n continue<\/span>;<\/span>
                \n }<\/span><\/p>\n

                InetAddr peer<\/span>(<\/span>peer_addr)<\/span>;<\/span>
                \n auto<\/span>*<\/span> data =<\/span> new<\/span> ThreadData<\/span>(<\/span>this<\/span>,<\/span> sockfd,<\/span> peer)<\/span>;<\/span><\/p>\n

                pthread_t tid;<\/span>
                \n int<\/span> ret =<\/span> pthread_create<\/span>(<\/span>&<\/span>tid,<\/span> nullptr<\/span>,<\/span> Routine,<\/span> data)<\/span>;<\/span>
                \n if<\/span> (<\/span>ret !=<\/span> 0<\/span>)<\/span> {<\/span>
                \n std::<\/span>cerr <<<\/span> "pthread_create error: "<\/span>
                \n <<<\/span> strerror<\/span>(<\/span>ret)<\/span> <<<\/span> std::<\/span>endl;<\/span>
                \n close<\/span>(<\/span>sockfd)<\/span>;<\/span>
                \n delete<\/span> data;<\/span>
                \n }<\/span>
                \n }<\/span>
                \n }<\/span><\/p>\n

                ~<\/span>TcpServer<\/span>(<\/span>)<\/span> override<\/span> {<\/span>
                \n if<\/span> (<\/span>listen_sock_ >=<\/span> 0<\/span>)<\/span> {<\/span>
                \n close<\/span>(<\/span>listen_sock_)<\/span>;<\/span>
                \n }<\/span>
                \n }<\/span><\/p>\n

                private<\/span>:<\/span>
                \n static<\/span> void<\/span>*<\/span> Routine<\/span>(<\/span>void<\/span>*<\/span> args)<\/span> {<\/span>
                \n pthread_detach<\/span>(<\/span>pthread_self<\/span>(<\/span>)<\/span>)<\/span>;<\/span><\/p>\n

                std::<\/span>unique_ptr<<\/span>ThreadData><\/span> data<\/span>(<\/span>
                \n static_cast<\/span><<\/span>ThreadData*<\/span>><\/span><\/span><\/span>(<\/span>args)<\/span>)<\/span>;<\/span><\/p>\n

                data-><\/span>server-><\/span>Service<\/span>(<\/span>data-><\/span>sockfd,<\/span> data-><\/span>peer)<\/span>;<\/span>
                \n close<\/span>(<\/span>data-><\/span>sockfd)<\/span>;<\/span>
                \n return<\/span> nullptr<\/span>;<\/span>
                \n }<\/span><\/p>\n

                static<\/span> bool<\/span> WriteAll<\/span>(<\/span>int<\/span> sockfd,<\/span> const<\/span> std::<\/span>string&<\/span> message)<\/span> {<\/span>
                \n std::<\/span>size_t offset =<\/span> 0<\/span>;<\/span>
                \n while<\/span> (<\/span>offset <<\/span> message.<\/span>size<\/span>(<\/span>)<\/span>)<\/span> {<\/span>
                \n ssize_t n =<\/span> write<\/span>(<\/span>sockfd,<\/span>
                \n message.<\/span>data<\/span>(<\/span>)<\/span> +<\/span> offset,<\/span>
                \n message.<\/span>size<\/span>(<\/span>)<\/span> –<\/span> offset)<\/span>;<\/span>
                \n if<\/span> (<\/span>n ><\/span> 0<\/span>)<\/span> {<\/span>
                \n offset +=<\/span> static_cast<\/span><<\/span>std::<\/span>size_t><\/span><\/span><\/span>(<\/span>n)<\/span>;<\/span>
                \n }<\/span> else<\/span> if<\/span> (<\/span>n <<\/span> 0<\/span> &&<\/span> errno ==<\/span> EINTR)<\/span> {<\/span>
                \n continue<\/span>;<\/span>
                \n }<\/span> else<\/span> {<\/span>
                \n return<\/span> false<\/span>;<\/span>
                \n }<\/span>
                \n }<\/span>
                \n return<\/span> true<\/span>;<\/span>
                \n }<\/span><\/p>\n

                void<\/span> Service<\/span>(<\/span>int<\/span> sockfd,<\/span> const<\/span> InetAddr&<\/span> peer)<\/span> {<\/span>
                \n char<\/span> buffer[<\/span>1024<\/span>]<\/span>;<\/span><\/p>\n

                for<\/span> (<\/span>;<\/span>;<\/span>)<\/span> {<\/span>
                \n ssize_t n =<\/span> read<\/span>(<\/span>sockfd,<\/span> buffer,<\/span> sizeof<\/span>(<\/span>buffer)<\/span> –<\/span> 1<\/span>)<\/span>;<\/span>
                \n if<\/span> (<\/span>n ><\/span> 0<\/span>)<\/span> {<\/span>
                \n std::<\/span>string request<\/span>(<\/span>buffer,<\/span>
                \n static_cast<\/span><<\/span>std::<\/span>size_t><\/span><\/span><\/span>(<\/span>n)<\/span>)<\/span>;<\/span>
                \n std::<\/span>string response =<\/span> handler_<\/span>(<\/span>request,<\/span> peer)<\/span>;<\/span><\/p>\n

                if<\/span> (<\/span>!<\/span>WriteAll<\/span>(<\/span>sockfd,<\/span> response)<\/span>)<\/span> {<\/span>
                \n break<\/span>;<\/span>
                \n }<\/span>
                \n }<\/span> else<\/span> if<\/span> (<\/span>n ==<\/span> 0<\/span>)<\/span> {<\/span>
                \n std::<\/span>cout <<<\/span> peer.<\/span>StringAddr<\/span>(<\/span>)<\/span> <<<\/span> " quit"<\/span> <<<\/span> std::<\/span>endl;<\/span>
                \n break<\/span>;<\/span>
                \n }<\/span> else<\/span> if<\/span> (<\/span>errno !=<\/span> EINTR)<\/span> {<\/span>
                \n std::<\/span>cerr <<<\/span> peer.<\/span>StringAddr<\/span>(<\/span>)<\/span>
                \n <<<\/span> " read error: "<\/span>
                \n <<<\/span> strerror<\/span>(<\/span>errno)<\/span> <<<\/span> std::<\/span>endl;<\/span>
                \n break<\/span>;<\/span>
                \n }<\/span>
                \n }<\/span>
                \n }<\/span><\/p>\n

                private<\/span>:<\/span>
                \n uint16_t<\/span> port_;<\/span>
                \n int<\/span> listen_sock_ =<\/span> –<\/span>1<\/span>;<\/span>
                \n Handler handler_;<\/span>
                \n}<\/span>;<\/span><\/p>\n

                \u8fd9\u91cc\u4f7f\u7528 unique_ptr<ThreadData> \u63a5\u7ba1\u7ebf\u7a0b\u53c2\u6570\u3002\u65e0\u8bba Service \u4ece\u54ea\u6761\u8def\u5f84\u8fd4\u56de，ThreadData \u90fd\u4f1a\u81ea\u52a8\u91ca\u653e，\u4e0d\u518d\u4f9d\u8d56\u624b\u5199 delete\u3002<\/p>\n

                \u4e94\u3001\u53d7\u9650\u8fdc\u7a0b\u547d\u4ee4\u4e1a\u52a1<\/h2>\n

                5.1 \u4e3a\u4ec0\u4e48\u5fc5\u987b\u4f7f\u7528\u767d\u540d\u5355<\/h3>\n

                \u5ba2\u6237\u7aef\u4f20\u6765\u7684\u5b57\u7b26\u4e32\u4e0d\u80fd\u76f4\u63a5\u4ea4\u7ed9 Shell\u3002\u82e5\u670d\u52a1\u5668\u65e0\u6761\u4ef6\u6267\u884c：<\/p>\n

                popen<\/span>(<\/span>request.<\/span>c_str<\/span>(<\/span>)<\/span>,<\/span> "r"<\/span>)<\/span>;<\/span><\/p>\n

                \u8fdc\u7aef\u7528\u6237\u5c31\u80fd\u8fd0\u884c\u4efb\u610f\u547d\u4ee4，\u8bfb\u53d6\u6587\u4ef6\u3001\u521b\u5efa\u8fdb\u7a0b\u751a\u81f3\u5220\u9664\u6570\u636e\u3002<\/p>\n

                \u9ed1\u540d\u5355\u5f88\u96be\u8986\u76d6\u6240\u6709\u7ec4\u5408\u5f62\u5f0f\u3002\u4f8b\u5982\u53ea\u7981\u6b62 rm，\u7528\u6237\u4ecd\u53ef\u80fd\u4f7f\u7528\u547d\u4ee4\u8fde\u63a5\u7b26\u3001\u811a\u672c\u89e3\u91ca\u5668\u6216\u5176\u4ed6\u5de5\u5177\u7ed5\u8fc7\u3002\u6559\u5b66\u793a\u4f8b\u91c7\u7528\u4e25\u683c\u767d\u540d\u5355：\u53ea\u6709\u5b8c\u6574\u5b57\u7b26\u4e32\u4e0e\u5141\u8bb8\u9879\u5b8c\u5168\u4e00\u81f4\u65f6\u624d\u6267\u884c\u3002<\/p>\n

                5.2 popen \u5982\u4f55\u53d6\u5f97\u547d\u4ee4\u8f93\u51fa<\/h3>\n

                popen(command, "r") \u5185\u90e8\u4f1a\u521b\u5efa\u7ba1\u9053\u5e76\u542f\u52a8 Shell \u6267\u884c\u547d\u4ee4\u3002\u547d\u4ee4\u7684\u6807\u51c6\u8f93\u51fa\u5199\u5165\u7ba1\u9053，\u7236\u8fdb\u7a0b\u5f97\u5230 FILE*，\u53ef\u4ee5\u901a\u8fc7 fgets \u8bfb\u53d6\u3002<\/p>\n

                \"popen\u901a\u8fc7\u7ba1\u9053\u53d6\u5f97\u547d\u4ee4\u8f93\u51fa\"<\/p>\n

                \u4f7f\u7528\u5b8c\u6210\u540e\u8981\u8c03\u7528 pclose，\u5b83\u4e0d\u4ec5\u5173\u95ed\u6d41，\u8fd8\u4f1a\u7b49\u5f85\u5b50\u8fdb\u7a0b\u5e76\u8fd4\u56de\u7ec8\u6b62\u72b6\u6001\u3002<\/p>\n

                5.3 Command.hpp<\/h3>\n

                #<\/span>pragma<\/span> once<\/span><\/span><\/p>\n

                #<\/span>include<\/span> "InetAddr.hpp"<\/span><\/span><\/p>\n

                #<\/span>include<\/span> <cstdio><\/span><\/span>
                \n#<\/span>include<\/span> <set><\/span><\/span>
                \n#<\/span>include<\/span> <string><\/span><\/span><\/p>\n

                class<\/span> Command<\/span> {<\/span>
                \npublic<\/span>:<\/span>
                \n Command<\/span>(<\/span>)<\/span>
                \n :<\/span> whitelist_<\/span>(<\/span>{<\/span>
                \n "ls"<\/span>,<\/span>
                \n "ls -l"<\/span>,<\/span>
                \n "pwd"<\/span>,<\/span>
                \n "who"<\/span>,<\/span>
                \n "whoami"<\/span>
                \n }<\/span>)<\/span> {<\/span>}<\/span><\/p>\n

                std::<\/span>string Execute<\/span>(<\/span>const<\/span> std::<\/span>string&<\/span> command,<\/span>
                \n const<\/span> InetAddr&<\/span> peer)<\/span> const<\/span> {<\/span>
                \n if<\/span> (<\/span>whitelist_.<\/span>find<\/span>(<\/span>command)<\/span> ==<\/span> whitelist_.<\/span>end<\/span>(<\/span>)<\/span>)<\/span> {<\/span>
                \n return<\/span> "command rejected\\\\n"<\/span>;<\/span>
                \n }<\/span><\/p>\n

                FILE*<\/span> fp =<\/span> popen<\/span>(<\/span>command.<\/span>c_str<\/span>(<\/span>)<\/span>,<\/span> "r"<\/span>)<\/span>;<\/span>
                \n if<\/span> (<\/span>fp ==<\/span> nullptr<\/span>)<\/span> {<\/span>
                \n return<\/span> "popen failed\\\\n"<\/span>;<\/span>
                \n }<\/span><\/p>\n

                std::<\/span>string result;<\/span>
                \n char<\/span> buffer[<\/span>1024<\/span>]<\/span>;<\/span><\/p>\n

                while<\/span> (<\/span>fgets<\/span>(<\/span>buffer,<\/span> sizeof<\/span>(<\/span>buffer)<\/span>,<\/span> fp)<\/span> !=<\/span> nullptr<\/span>)<\/span> {<\/span>
                \n result +=<\/span> buffer;<\/span>
                \n }<\/span><\/p>\n

                int<\/span> status =<\/span> pclose<\/span>(<\/span>fp)<\/span>;<\/span>
                \n if<\/span> (<\/span>status ==<\/span> –<\/span>1<\/span>)<\/span> {<\/span>
                \n return<\/span> "pclose failed\\\\n"<\/span>;<\/span>
                \n }<\/span><\/p>\n

                if<\/span> (<\/span>result.<\/span>empty<\/span>(<\/span>)<\/span>)<\/span> {<\/span>
                \n result =<\/span> "command completed without output\\\\n"<\/span>;<\/span>
                \n }<\/span><\/p>\n

                return<\/span> peer.<\/span>StringAddr<\/span>(<\/span>)<\/span> +<\/span> " execute result:\\\\n"<\/span> +<\/span> result;<\/span>
                \n }<\/span><\/p>\n

                private<\/span>:<\/span>
                \n std::<\/span>set<<\/span>std::<\/span>string><\/span> whitelist_;<\/span>
                \n}<\/span>;<\/span><\/p>\n

                \u8fd9\u91cc\u6ca1\u6709\u628a touch \u653e\u8fdb\u767d\u540d\u5355，\u56e0\u4e3a\u6587\u7ae0\u53ea\u9700\u8981\u6f14\u793a\u8bfb\u53d6\u578b\u547d\u4ee4\u3002\u5141\u8bb8\u5199\u64cd\u4f5c\u4f1a\u6539\u53d8\u670d\u52a1\u5668\u72b6\u6001，\u98ce\u9669\u548c\u6392\u67e5\u6210\u672c\u90fd\u66f4\u9ad8\u3002<\/p>\n

                5.4 TcpServer.cc<\/h3>\n

                #<\/span>include<\/span> "Command.hpp"<\/span><\/span>
                \n#<\/span>include<\/span> "TcpServer.hpp"<\/span><\/span><\/p>\n

                #<\/span>include<\/span> <functional><\/span><\/span>
                \n#<\/span>include<\/span> <iostream><\/span><\/span><\/p>\n

                int<\/span> main<\/span>(<\/span>int<\/span> argc,<\/span> char<\/span>*<\/span> argv[<\/span>]<\/span>)<\/span> {<\/span>
                \n if<\/span> (<\/span>argc !=<\/span> 2<\/span>)<\/span> {<\/span>
                \n std::<\/span>cerr <<<\/span> "Usage: "<\/span> <<<\/span> argv[<\/span>0<\/span>]<\/span> <<<\/span> " port"<\/span> <<<\/span> std::<\/span>endl;<\/span>
                \n return<\/span> USAGE_ERR;<\/span>
                \n }<\/span><\/p>\n

                uint16_t<\/span> port =<\/span> static_cast<\/span><<\/span>uint16_t<\/span>><\/span><\/span><\/span>(<\/span>std::<\/span>stoi<\/span>(<\/span>argv[<\/span>1<\/span>]<\/span>)<\/span>)<\/span>;<\/span>
                \n Command command;<\/span><\/p>\n

                TcpServer server<\/span>(<\/span>
                \n port,<\/span>
                \n [<\/span>&<\/span>command]<\/span>(<\/span>const<\/span> std::<\/span>string&<\/span> request,<\/span>
                \n const<\/span> InetAddr&<\/span> peer)<\/span> {<\/span>
                \n return<\/span> command.<\/span>Execute<\/span>(<\/span>request,<\/span> peer)<\/span>;<\/span>
                \n }<\/span>)<\/span>;<\/span><\/p>\n

                if<\/span> (<\/span>!<\/span>server.<\/span>Init<\/span>(<\/span>)<\/span>)<\/span> {<\/span>
                \n return<\/span> SOCKET_ERR;<\/span>
                \n }<\/span><\/p>\n

                server.<\/span>Run<\/span>(<\/span>)<\/span>;<\/span>
                \n return<\/span> OK;<\/span>
                \n}<\/span><\/p>\n

                5.5 Makefile<\/h3>\n

                .PHONY: all clean<\/p>\n

                all: tcpclient tcpserver<\/p>\n

                tcpclient: TcpClient.cc
                \ng++ -o $@ $^ -std=c++17<\/p>\n

                tcpserver: TcpServer.cc
                \ng++ -o $@ $^ -std=c++17 -pthread<\/p>\n

                clean:
                \nrm -f tcpclient tcpserver<\/p>\n

                \u516d\u3001\u8fd9\u4e00\u7248\u8fd8\u4e0d\u80fd\u5f53\u4f5c\u6b63\u5f0f\u8fdc\u7a0b\u7ba1\u7406\u5de5\u5177<\/h2>\n

                \u5373\u4f7f\u6709\u767d\u540d\u5355，\u8fd9\u4e2a\u793a\u4f8b\u4ecd\u7136\u7f3a\u5c11\u5f88\u591a\u6b63\u5f0f\u7cfb\u7edf\u5fc5\u987b\u5177\u5907\u7684\u80fd\u529b：<\/p>\n

                  \n
                • \u8eab\u4efd\u8ba4\u8bc1\u548c\u6743\u9650\u63a7\u5236；<\/li>\n
                • \u4f20\u8f93\u52a0\u5bc6；<\/li>\n
                • \u5b8c\u6574\u7684\u5e94\u7528\u5c42\u62a5\u6587\u534f\u8bae；<\/li>\n
                • \u547d\u4ee4\u6267\u884c\u8d85\u65f6；<\/li>\n
                • \u8f93\u51fa\u5927\u5c0f\u9650\u5236；<\/li>\n
                • \u5ba1\u8ba1\u65e5\u5fd7\u548c\u5e76\u53d1\u6570\u91cf\u9650\u5236\u3002<\/li>\n<\/ul>\n

                  \u56e0\u6b64\u5b83\u53ea\u7528\u4e8e\u5b66\u4e60 TCP\u3001\u591a\u7ebf\u7a0b\u548c\u56de\u8c03\u5206\u5c42，\u4e0d\u80fd\u76f4\u63a5\u66b4\u9732\u5230\u516c\u7f51\u3002<\/p>\n

                  \u767d\u540d\u5355\u53ea\u662f\u6700\u4f4e\u9650\u5ea6\u7684\u8f93\u5165\u9650\u5236，\u4e0d\u7b49\u4e8e\u8fdc\u7a0b\u6267\u884c\u7cfb\u7edf\u5df2\u7ecf\u5b89\u5168\u3002\u6ca1\u6709\u8ba4\u8bc1\u3001\u52a0\u5bc6\u548c\u534f\u8bae\u8fb9\u754c\u7684\u670d\u52a1\u4e0d\u5e94\u90e8\u7f72\u5230\u4e0d\u53ef\u4fe1\u7f51\u7edc\u3002<\/b><\/font><\/p>\n

                  \u4e03\u3001\u591a\u7ebf\u7a0b\u6a21\u578b\u7684\u4f18\u7f3a\u70b9<\/h2>\n

                  \u4f18\u70b9：<\/p>\n

                    \n
                  • \u540c\u4e00\u8fdb\u7a0b\u5185\u5171\u4eab\u6570\u636e\u65b9\u4fbf；<\/li>\n
                  • \u521b\u5efa\u4e0e\u5207\u6362\u6210\u672c\u901a\u5e38\u4f4e\u4e8e\u8fdb\u7a0b；<\/li>\n
                  • \u6bcf\u6761\u957f\u8fde\u63a5\u6709\u72ec\u7acb\u6267\u884c\u6d41，\u5199\u6cd5\u76f4\u89c2\u3002<\/li>\n<\/ul>\n

                    \u7f3a\u70b9：<\/p>\n

                      \n
                    • \u7ebf\u7a0b\u5171\u4eab\u5730\u5740\u7a7a\u95f4，\u4e00\u4e2a\u7ebf\u7a0b\u8d8a\u754c\u53ef\u80fd\u7834\u574f\u6574\u4e2a\u8fdb\u7a0b；<\/li>\n
                    • \u5171\u4eab\u6570\u636e\u9700\u8981\u52a0\u9501；<\/li>\n
                    • \u8fde\u63a5\u6570\u91cf\u5f88\u5927\u65f6，\u4e00\u8fde\u63a5\u4e00\u7ebf\u7a0b\u4ecd\u4f1a\u6d88\u8017\u5927\u91cf\u6808\u548c\u8c03\u5ea6\u8d44\u6e90；<\/li>\n
                    • \u5206\u79bb\u7ebf\u7a0b\u4e0d\u4fbf\u96c6\u4e2d\u7ba1\u7406\u548c\u4f18\u96c5\u9000\u51fa\u3002<\/li>\n<\/ul>\n

                      \u4e0b\u4e00\u7bc7\u7ee7\u7eed\u5f15\u5165\u7ebf\u7a0b\u6c60\u3002\u4e0d\u8fc7\u7ebf\u7a0b\u6c60\u4e0d\u9002\u5408\u65e0\u6761\u4ef6\u5904\u7406\u6240\u6709\u957f\u8fde\u63a5，\u9700\u8981\u5148\u533a\u5206\u957f\u670d\u52a1\u548c\u77ed\u670d\u52a1\u3002<\/p>\n

                      \u603b\u7ed3<\/h2>\n

                      \u672c\u6587\u5b8c\u6210\u4e86\u591a\u7ebf\u7a0b TCP \u670d\u52a1\u5668\u548c\u53d7\u9650\u8fdc\u7a0b\u547d\u4ee4\u4e1a\u52a1：<\/p>\n

                    • \u7ebf\u7a0b\u5171\u4eab\u6587\u4ef6\u63cf\u8ff0\u7b26\u8868，\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528 accept \u8fd4\u56de\u7684 fd；<\/li>\n
                    • \u5de5\u4f5c\u7ebf\u7a0b\u4e0d\u80fd\u5173\u95ed\u4e3b\u7ebf\u7a0b\u4ecd\u5728\u4f7f\u7528\u7684\u76d1\u542c fd；<\/li>\n
                    • \u6bcf\u6761\u8fde\u63a5\u7684\u53c2\u6570\u5fc5\u987b\u62e5\u6709\u72ec\u7acb\u751f\u547d\u5468\u671f；<\/li>\n
                    • \u5206\u79bb\u7ebf\u7a0b\u9000\u51fa\u540e\u7531\u7cfb\u7edf\u56de\u6536，\u4f46\u901a\u4fe1 fd \u548c\u5806\u5bf9\u8c61\u4ecd\u8981\u6b63\u786e\u91ca\u653e；<\/li>\n
                    • \u7f51\u7edc\u6846\u67b6\u901a\u8fc7\u56de\u8c03\u4e0e\u4e1a\u52a1\u89e3\u8026；<\/li>\n
                    • \u8fdc\u7a0b\u547d\u4ee4\u5fc5\u987b\u4e25\u683c\u9650\u5236，\u793a\u4f8b\u53ea\u5141\u8bb8\u53ea\u8bfb\u767d\u540d\u5355\u547d\u4ee4\u3002<\/li>\n

                      \u4e0b\u4e00\u7bc7\u628a\u901a\u4fe1\u4efb\u52a1\u4ea4\u7ed9\u7ebf\u7a0b\u6c60，\u5e76\u8ba8\u8bba\u4e3a\u4ec0\u4e48\u7ebf\u7a0b\u6c60\u66f4\u9002\u5408\u77ed\u670d\u52a1，\u800c\u4e0d\u662f\u8ba9\u5c11\u91cf\u5de5\u4f5c\u7ebf\u7a0b\u957f\u671f\u5360\u5728\u8fde\u63a5\u4e0a\u3002<\/p>\n

                      \u5f80\u671f\u535a\u5ba2\u5206\u4eab \u3010Linux\u7f51\u7edc\u3011UDP \u804a\u5929\u5ba4\u600e\u4e48\u5b9e\u73b0？\u4ece\u5728\u7ebf\u7528\u6237\u7ba1\u7406\u3001\u6d88\u606f\u5e7f\u64ad\u5230\u53cc\u7ebf\u7a0b\u6536\u53d1\u4e0e\u7ebf\u7a0b\u6c60 \u3010Linux\u7f51\u7edc\u3011TCP \u670d\u52a1\u5668\u600e\u4e48\u5199？\u4ece listen\u3001accept \u5230 read\/write，\u624b\u5199\u5b8c\u6574 Echo Server \u3010Linux\u7f51\u7edc\u3011TCP \u670d\u52a1\u5668\u5982\u4f55\u5e76\u53d1\u5904\u7406\u591a\u4e2a\u5ba2\u6237\u7aef？\u4ece fork\u3001\u50f5\u5c38\u8fdb\u7a0b\u5230\u53cc\u91cd fork<\/p>\n","protected":false},"excerpt":{"rendered":"

                      🔥\u4e2a\u4eba\u4e3b\u9875：\u7231\u548c\u51b0\u9614\u4e50 📚\u4e13\u680f\u4f20\u9001\u95e8：\u300a\u6570\u636e\u7ed3\u6784\u4e0e\u7b97\u6cd5\u300b \u3001C\u3001 \u300aLinux\u64cd\u4f5c\u7cfb\u7edf\u300b 🐶\u5b66\u4e60\u65b9\u5411：C\u65b9\u5411\u5b66\u4e60\u7231\u597d\u8005 \u2b50\u4eba\u751f\u683c\u8a00：\u5f97\u77e5\u5766\u7136 ，\u5931\u4e4b\u6de1\u7136 🏠\u535a\u4e3b\u7b80\u4ecb \u6587\u7ae0\u76ee\u5f55\u524d\u8a00\u4e00\u3001\u7ebf\u7a0b\u4e3a\u4ec0\u4e48\u80fd\u76f4\u63a5\u4f7f\u7528\u901a\u4fe1 fd1.1 \u7ebf\u7a0b\u5171\u4eab\u8fdb\u7a0b\u7684\u5927\u90e8\u5206\u8d44\u6e901.2 \u5de5\u4f5c\u7ebf\u7a0b\u4e0d\u80fd\u968f\u610f\u5173\u95ed\u76d1\u542c fd\u4e8c\u3001\u7ebf\u7a0b\u5165\u53e3\u4e3a\u4ec0\u4e48\u901a\u5e38\u662f\u9759\u6001\u51fd\u65702.1 \u539f\u751f\u7ebf\u7a0b\u51fd\u6570\u7b7e\u540d2.<\/p>\n","protected":false},"author":2,"featured_media":123826,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[11820,58,43,78,44],"topic":[],"class_list":["post-123830","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-atomgit","tag-linux","tag-43","tag-78","tag-44"],"yoast_head":"\n\u3010Linux\u7f51\u7edc\u3011TCP \u670d\u52a1\u5668\u5982\u4f55\u5e76\u53d1\u5904\u7406\u591a\u4e2a\u5ba2\u6237\u7aef\uff1f\u4ece fork\u3001\u50f5\u5c38\u8fdb\u7a0b\u5230\u53cc\u91cd fork - 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