{"id":47049,"date":"2025-07-30T05:47:35","date_gmt":"2025-07-29T21:47:35","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/47049.html"},"modified":"2025-07-30T05:47:35","modified_gmt":"2025-07-29T21:47:35","slug":"%e6%b7%b1%e5%85%a5%e7%90%86%e8%a7%a3socket%e7%bc%96%e7%a8%8b%ef%bc%9a%e6%9c%8d%e5%8a%a1%e5%99%a8%e4%b8%8e%e5%ae%a2%e6%88%b7%e7%ab%af%e8%ae%be%e8%ae%a1%e5%ae%9e%e6%88%98","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/47049.html","title":{"rendered":"\u6df1\u5165\u7406\u89e3Socket\u7f16\u7a0b\uff1a\u670d\u52a1\u5668\u4e0e\u5ba2\u6237\u7aef\u8bbe\u8ba1\u5b9e\u6218"},"content":{"rendered":"

\u672c\u6587\u8fd8\u6709\u914d\u5957\u7684\u7cbe\u54c1\u8d44\u6e90，\u70b9\u51fb\u83b7\u53d6 \"menu-r.4af5f7ec.gif\" <\/p>\n

\u7b80\u4ecb：Socket\u7f16\u7a0b\u662f\u7f51\u7edc\u901a\u4fe1\u7684\u5173\u952e\u6280\u672f，\u652f\u6301TCP\u548cUDP\u534f\u8bae，\u7528\u4e8e\u5b9e\u73b0\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\u7684\u8fdb\u7a0b\u95f4\u901a\u4fe1\u3002\u672c\u6587\u6df1\u5165\u5206\u6790Socket\u670d\u52a1\u5668\u548c\u5ba2\u6237\u7aef\u7684\u8bbe\u8ba1\u539f\u7406\u548c\u5de5\u4f5c\u6d41\u7a0b，\u5e76\u901a\u8fc7\u5177\u4f53\u793a\u4f8b\u4ecb\u7ecd\u5982\u4f55\u5728WPF\u73af\u5883\u4e2d\u4f7f\u7528Socket\u8fdb\u884c\u901a\u4fe1\u3002\u4e86\u89e3Socket\u4e0d\u4ec5\u5bf9\u4e8e\u5206\u5e03\u5f0f\u5e94\u7528\u5f00\u53d1\u81f3\u5173\u91cd\u8981，\u4e5f\u5bf9\u4e8e\u5b9e\u73b0\u9ad8\u6548\u7a33\u5b9a\u7684\u7f51\u7edc\u5e94\u7528\u63d0\u4f9b\u4e86\u5f3a\u5927\u7684\u6570\u636e\u4f20\u8f93\u80fd\u529b\u3002 \"Socket\u670d\u52a1\u5668\u548c\u5ba2\u6237\u7aef\" <\/p>\n

1. Socket\u7f16\u7a0b\u57fa\u7840\u548c\u91cd\u8981\u6027 <\/h2>\n

1.1 Socket\u7f16\u7a0b\u6982\u8ff0 <\/h3>\n

Socket\u7f16\u7a0b\u662f\u7f51\u7edc\u5e94\u7528\u7a0b\u5e8f\u5f00\u53d1\u7684\u57fa\u7840，\u5b83\u5141\u8bb8\u5e94\u7528\u7a0b\u5e8f\u4e4b\u95f4\u901a\u8fc7\u7f51\u7edc\u8fdb\u884c\u6570\u636e\u4ea4\u6362\u3002Socket\u4f5c\u4e3a\u901a\u4fe1\u7aef\u70b9，\u5b9e\u8d28\u4e0a\u662f\u8ba1\u7b97\u673a\u7f51\u7edc\u901a\u4fe1\u7684API\u63a5\u53e3，\u80fd\u591f\u5b9e\u73b0\u4e0d\u540c\u4e3b\u673a\u4e0a\u7684\u5e94\u7528\u7a0b\u5e8f\u95f4\u7684\u6570\u636e\u4ea4\u4e92\u3002 <\/p>\n

1.2 Socket\u7684\u91cd\u8981\u6027 <\/h3>\n

\u5728\u73b0\u4ee3\u7f51\u7edc\u5e94\u7528\u4e2d，Socket\u7f16\u7a0b\u5904\u4e8e\u6838\u5fc3\u5730\u4f4d，\u5b83\u7684\u91cd\u8981\u6027\u4f53\u73b0\u5728\u4ee5\u4e0b\u51e0\u4e2a\u65b9\u9762： – \u8de8\u5e73\u53f0\u6570\u636e\u4ea4\u4e92 ：\u901a\u8fc7Socket，\u4e0d\u540c\u64cd\u4f5c\u7cfb\u7edf\u95f4\u53ef\u4ee5\u5b9e\u73b0\u65e0\u7f1d\u7684\u6570\u636e\u4ea4\u6362\u3002 – \u6784\u5efa\u7f51\u7edc\u5e94\u7528 ：\u5305\u62ecWeb\u670d\u52a1\u5668\u3001\u90ae\u4ef6\u670d\u52a1\u5668\u3001\u5373\u65f6\u901a\u8baf\u8f6f\u4ef6\u7b49\u3002 – \u5b9e\u65f6\u6570\u636e\u5904\u7406 ：\u5728\u9700\u8981\u5feb\u901f\u6570\u636e\u4ea4\u6362\u7684\u573a\u666f\u4e2d，\u5982\u5728\u7ebf\u6e38\u620f\u3001\u89c6\u9891\u4f1a\u8bae\u7cfb\u7edf，Socket\u7f16\u7a0b\u63d0\u4f9b\u4e86\u5f3a\u5927\u7684\u652f\u6301\u3002 <\/p>\n

1.3 Socket\u7f16\u7a0b\u6a21\u578b <\/h3>\n

Socket\u7f16\u7a0b\u6a21\u578b\u57fa\u4e8e\u5ba2\u6237\u7aef-\u670d\u52a1\u5668\u67b6\u6784，\u5305\u62ec\u521b\u5efaSocket\u3001\u7ed1\u5b9a\u5730\u5740\u3001\u76d1\u542c\u8fde\u63a5\u3001\u63a5\u53d7\u8fde\u63a5\u3001\u6570\u636e\u4f20\u8f93\u548c\u5173\u95ed\u8fde\u63a5\u7b49\u5173\u952e\u6b65\u9aa4\u3002\u4e86\u89e3\u5e76\u638c\u63e1\u8fd9\u4e9b\u6b65\u9aa4\u662f\u8bbe\u8ba1\u9ad8\u6548\u7f51\u7edc\u5e94\u7528\u7a0b\u5e8f\u7684\u5173\u952e\u3002 <\/p>\n

\u4e3a\u4e86\u6df1\u5165\u4e86\u89e3Socket\u7f16\u7a0b，\u4e0b\u4e00\u7ae0\u5c06\u8ba8\u8bbaTCP\u548cUDP\u534f\u8bae\u5728\u7f51\u7edc\u901a\u4fe1\u4e2d\u7684\u5e94\u7528\u3002 <\/p>\n

2. TCP\u548cUDP\u534f\u8bae\u5728\u7f51\u7edc\u901a\u4fe1\u4e2d\u7684\u5e94\u7528 <\/h2>\n

2.1 TCP\/IP\u534f\u8bae\u7684\u57fa\u672c\u6982\u5ff5 <\/h3>\n

2.1.1 \u4f20\u8f93\u63a7\u5236\u534f\u8baeTCP\u7279\u6027\u4e0e\u5de5\u4f5c\u539f\u7406 <\/h4>\n

TCP（Transmission Control Protocol，\u4f20\u8f93\u63a7\u5236\u534f\u8bae）\u662f\u4e00\u79cd\u9762\u5411\u8fde\u63a5\u7684\u3001\u53ef\u9760\u7684\u3001\u57fa\u4e8e\u5b57\u8282\u6d41\u7684\u4f20\u8f93\u5c42\u901a\u4fe1\u534f\u8bae\u3002\u5b83\u4e3a\u6570\u636e\u901a\u4fe1\u63d0\u4f9b\u5168\u53cc\u5de5\u670d\u52a1，\u4fdd\u8bc1\u6570\u636e\u5305\u6309\u5e8f\u5230\u8fbe，\u5e76\u4e14\u5bf9\u4e22\u5931\u7684\u6570\u636e\u5305\u8fdb\u884c\u91cd\u4f20，\u786e\u4fdd\u6570\u636e\u4f20\u8f93\u7684\u5b8c\u6574\u6027\u3002TCP\u901a\u8fc7\u5e8f\u5217\u53f7\u548c\u786e\u8ba4\u5e94\u7b54\u673a\u5236\u6765\u786e\u4fdd\u6570\u636e\u7684\u53ef\u9760\u4ea4\u4ed8，\u6b64\u5916，\u8fd8\u63d0\u4f9b\u4e86\u6d41\u91cf\u63a7\u5236\u548c\u62e5\u585e\u63a7\u5236\u673a\u5236，\u4ee5\u907f\u514d\u7f51\u7edc\u8fc7\u8f7d\u548c\u62e5\u585e\u3002 <\/p>\n

TCP\u7684\u5de5\u4f5c\u539f\u7406\u53ef\u4ee5\u6982\u62ec\u4e3a\u4ee5\u4e0b\u51e0\u4e2a\u5173\u952e\u70b9： 1. \u8fde\u63a5\u7ba1\u7406 ：\u4f7f\u7528\u4e09\u6b21\u63e1\u624b\u5efa\u7acb\u8fde\u63a5，\u786e\u4fdd\u53cc\u65b9\u90fd\u51c6\u5907\u597d\u8fdb\u884c\u6570\u636e\u4f20\u8f93\u3002 2. \u53ef\u9760\u4f20\u8f93 ：\u901a\u8fc7\u5e8f\u5217\u53f7\u548c\u786e\u8ba4\u5e94\u7b54\u6765\u4fdd\u8bc1\u6570\u636e\u5305\u7684\u987a\u5e8f\u548c\u5b8c\u6574\u6027\u3002 3. \u6d41\u91cf\u63a7\u5236 ：TCP\u6ed1\u52a8\u7a97\u53e3\u673a\u5236\u53ef\u4ee5\u52a8\u6001\u8c03\u6574\u53d1\u9001\u901f\u7387，\u907f\u514d\u63a5\u6536\u65b9\u5904\u7406\u4e0d\u8fc7\u6765\u3002 4. \u62e5\u585e\u63a7\u5236 ：\u901a\u8fc7\u6162\u542f\u52a8\u3001\u62e5\u585e\u907f\u514d\u3001\u5feb\u901f\u91cd\u4f20\u548c\u5feb\u901f\u6062\u590d\u7b97\u6cd5\u6765\u63a7\u5236\u7f51\u7edc\u4e2d\u7684\u6570\u636e\u6d41\u91cf\u3002 <\/p>\n

2.1.2 \u7528\u6237\u6570\u636e\u62a5\u534f\u8baeUDP\u7279\u6027\u4e0e\u5de5\u4f5c\u539f\u7406 <\/h4>\n

UDP（User Datagram Protocol，\u7528\u6237\u6570\u636e\u62a5\u534f\u8bae）\u662f\u4e00\u79cd\u65e0\u8fde\u63a5\u7684\u3001\u4e0d\u53ef\u9760\u7684\u3001\u9762\u5411\u62a5\u6587\u7684\u4f20\u8f93\u5c42\u901a\u4fe1\u534f\u8bae\u3002\u4e0eTCP\u76f8\u6bd4，UDP\u4e0d\u63d0\u4f9b\u590d\u6742\u7684\u8fde\u63a5\u7ba1\u7406\u548c\u53ef\u9760\u6027\u4fdd\u8bc1，\u5b83\u4ec5\u5bf9\u6570\u636e\u5305\u8fdb\u884c\u5c01\u88c5\u7136\u540e\u76f4\u63a5\u53d1\u9001\u5230\u76ee\u6807\u5730\u5740\u3002UDP\u7684\u8fd9\u79cd\u7279\u6027\u4f7f\u5f97\u5b83\u5728\u67d0\u4e9b\u7279\u5b9a\u5e94\u7528\u573a\u5408\u4e0b\u6bd4TCP\u66f4\u53d7\u6b22\u8fce，\u56e0\u4e3a\u5b83\u5177\u6709\u66f4\u4f4e\u7684\u5ef6\u8fdf\u548c\u66f4\u9ad8\u7684\u4f20\u8f93\u6548\u7387\u3002 <\/p>\n

UDP\u7684\u5de5\u4f5c\u539f\u7406\u4e3b\u8981\u5305\u62ec： 1. \u65e0\u8fde\u63a5 ：\u53d1\u9001\u6570\u636e\u524d\u4e0d\u9700\u8981\u5efa\u7acb\u8fde\u63a5，\u76f4\u63a5\u53d1\u9001\u3002 2. \u65e0\u5e8f\u6027 ：\u4e0d\u4fdd\u8bc1\u6570\u636e\u5305\u7684\u5230\u8fbe\u987a\u5e8f\u3002 3. \u65e0\u5dee\u9519\u68c0\u67e5 ：\u4e0d\u5bf9\u6570\u636e\u5305\u8fdb\u884c\u91cd\u4f20\u673a\u5236，\u4e0d\u4fdd\u8bc1\u6570\u636e\u7684\u53ef\u9760\u6027\u3002 4. \u4f4e\u5f00\u9500 ：\u7531\u4e8e\u7f3a\u5c11\u8fde\u63a5\u548c\u91cd\u4f20\u673a\u5236，UDP\u534f\u8bae\u5177\u6709\u8f83\u4f4e\u7684\u534f\u8bae\u5f00\u9500\u3002 <\/p>\n

2.2 TCP\u548cUDP\u7684\u9009\u62e9\u4e0e\u5e94\u7528\u573a\u666f <\/h3>\n

2.2.1 TCP\u4e0eUDP\u7684\u6027\u80fd\u5bf9\u6bd4 <\/h4>\n

TCP\u548cUDP\u5728\u7f51\u7edc\u901a\u4fe1\u4e2d\u7684\u6027\u80fd\u5bf9\u6bd4\u4e3b\u8981\u4f53\u73b0\u5728\u4ee5\u4e0b\u51e0\u4e2a\u65b9\u9762： <\/p>\n

  • \n

    \u53ef\u9760\u6027 ： – TCP ：\u63d0\u4f9b\u53ef\u9760\u7684\u6570\u636e\u4f20\u8f93\u670d\u52a1，\u901a\u8fc7\u786e\u8ba4\u5e94\u7b54\u548c\u91cd\u4f20\u673a\u5236\u786e\u4fdd\u6570\u636e\u5305\u6309\u5e8f\u65e0\u8bef\u5730\u5230\u8fbe\u3002 – UDP ：\u4e0d\u4fdd\u8bc1\u6570\u636e\u7684\u53ef\u9760\u6027，\u4e0d\u63d0\u4f9b\u786e\u8ba4\u5e94\u7b54\u548c\u91cd\u4f20\u673a\u5236\u3002 <\/p>\n<\/li>\n

  • \n

    \u8fde\u63a5\u7ba1\u7406 ： – TCP ：\u9700\u8981\u901a\u8fc7\u4e09\u6b21\u63e1\u624b\u5efa\u7acb\u8fde\u63a5，\u56e0\u6b64\u6709\u8f83\u5927\u7684\u8fde\u63a5\u7ba1\u7406\u5f00\u9500\u3002 – UDP ：\u65e0\u9700\u8fdb\u884c\u8fde\u63a5\u7ba1\u7406，\u53d1\u9001\u6570\u636e\u524d\u4e0d\u9700\u8981\u5efa\u7acb\u8fde\u63a5\u3002 <\/p>\n<\/li>\n

  • \n

    \u5ef6\u8fdf ： – TCP ：\u4e09\u6b21\u63e1\u624b\u548c\u786e\u8ba4\u5e94\u7b54\u673a\u5236\u589e\u52a0\u4f20\u8f93\u5ef6\u8fdf\u3002 – UDP ：\u65e0\u8fde\u63a5\u7ba1\u7406，\u5ef6\u8fdf\u8f83\u4f4e，\u9002\u5408\u5bf9\u5b9e\u65f6\u6027\u8981\u6c42\u9ad8\u7684\u5e94\u7528\u3002 <\/p>\n<\/li>\n

  • \n

    \u5e26\u5bbd\u4f7f\u7528 ： – TCP ：\u6ed1\u52a8\u7a97\u53e3\u673a\u5236\u53ef\u4ee5\u52a8\u6001\u8c03\u6574，\u4f46\u589e\u52a0\u4e86\u989d\u5916\u7684\u5934\u90e8\u4fe1\u606f\u3002 – UDP ：\u5934\u90e8\u4fe1\u606f\u8f83\u5c11，\u66f4\u52a0\u8282\u7701\u5e26\u5bbd，\u9002\u5408\u6570\u636e\u91cf\u5c0f\u4f46\u9891\u7e41\u4f20\u8f93\u7684\u5e94\u7528\u3002 <\/p>\n<\/li>\n

    2.2.2 \u5982\u4f55\u6839\u636e\u9700\u6c42\u9009\u62e9\u534f\u8bae <\/h4>\n

    \u9009\u62e9TCP\u8fd8\u662fUDP\u534f\u8bae\u5e94\u6839\u636e\u5e94\u7528\u7684\u5177\u4f53\u9700\u6c42\u6765\u51b3\u5b9a\u3002\u4ee5\u4e0b\u662f\u51e0\u79cd\u5e38\u89c1\u7684\u5e94\u7528\u573a\u666f： <\/p>\n

      \n
    • \u53ef\u9760\u6027\u8981\u6c42\u9ad8 ：\u82e5\u5e94\u7528\u9700\u8981\u4fdd\u8bc1\u6570\u636e\u7684\u5b8c\u6574\u6027\u548c\u51c6\u786e\u6027，\u5982\u6587\u4ef6\u4f20\u8f93\u3001\u7f51\u9875\u6d4f\u89c8\u3001\u7535\u5b50\u90ae\u4ef6\u7b49，\u5e94\u9009\u62e9TCP\u3002 <\/li>\n
    • \u5b9e\u65f6\u6027\u8981\u6c42\u9ad8 ：\u82e5\u5e94\u7528\u9700\u8981\u4f4e\u5ef6\u8fdf\u7684\u5b9e\u65f6\u6570\u636e\u4f20\u8f93，\u5982\u5728\u7ebf\u6e38\u620f\u3001\u5b9e\u65f6\u89c6\u9891\u4f1a\u8bae\u3001\u8bed\u97f3\u901a\u8bdd\u7b49，UDP\u5f80\u5f80\u662f\u66f4\u597d\u7684\u9009\u62e9\u3002 <\/li>\n
    • \u5e26\u5bbd\u654f\u611f\u6027 ：\u5982\u679c\u5e94\u7528\u5bf9\u5e26\u5bbd\u7684\u4f7f\u7528\u975e\u5e38\u654f\u611f，\u5e0c\u671b\u51cf\u5c11\u5934\u90e8\u5f00\u9500，\u5982\u67d0\u4e9b\u6d41\u5a92\u4f53\u5e94\u7528，UDP\u53ef\u80fd\u66f4\u5408\u9002\u3002 <\/li>\n
    • \u7f51\u7edc\u72b6\u51b5\u826f\u597d ：\u5728\u7406\u60f3\u7684\u7f51\u7edc\u6761\u4ef6\u4e0b，UDP\u8868\u73b0\u5f97\u66f4\u597d；\u800c\u5728\u7f51\u7edc\u72b6\u51b5\u5dee，\u5982\u9ad8\u4e22\u5305\u7387\u548c\u9ad8\u5ef6\u8fdf\u65f6，TCP\u7684\u62e5\u585e\u63a7\u5236\u673a\u5236\u80fd\u63d0\u4f9b\u66f4\u597d\u7684\u6570\u636e\u4f20\u8f93\u4fdd\u8bc1\u3002 <\/li>\n<\/ul>\n

      \u7efc\u5408\u8003\u8651\u4ee5\u4e0a\u56e0\u7d20，\u5e94\u7528\u5f00\u53d1\u8005\u5e94\u8be5\u6839\u636e\u5b9e\u9645\u60c5\u51b5\u9009\u62e9\u6700\u5408\u9002\u7684\u534f\u8bae\u6765\u6ee1\u8db3\u5e94\u7528\u7684\u9700\u6c42\u3002\u5728\u5b9e\u9645\u5e94\u7528\u4e2d，TCP\u548cUDP\u5e76\u4e0d\u662f\u4e92\u65a5\u7684，\u6709\u4e9b\u5e94\u7528\u751a\u81f3\u4f1a\u5728\u540c\u4e00\u5e94\u7528\u4e2d\u540c\u65f6\u4f7f\u7528TCP\u548cUDP，\u4ee5\u517c\u987e\u53ef\u9760\u6027\u4e0e\u5b9e\u65f6\u6027\u3002 <\/p>\n

      3. Socket\u670d\u52a1\u5668\u548c\u5ba2\u6237\u7aef\u7684\u5de5\u4f5c\u539f\u7406 <\/h2>\n

      \u5728\u6df1\u5165\u63a2\u8ba8Socket\u7f16\u7a0b\u7684\u9ad8\u5c42\u5e94\u7528\u4e4b\u524d，\u7406\u89e3Socket\u670d\u52a1\u5668\u548c\u5ba2\u6237\u7aef\u5982\u4f55\u5de5\u4f5c\u662f\u81f3\u5173\u91cd\u8981\u7684\u3002\u8fd9\u4e00\u7ae0\u5c06\u8be6\u7ec6\u63a2\u8ba8\u7f51\u7edc\u901a\u4fe1\u7684\u57fa\u7840\u673a\u5236，\u5305\u62ec\u4e09\u6b21\u63e1\u624b\u4e0e\u56db\u6b21\u6325\u624b，\u4ee5\u53ca\u5728\u8fd9\u4e9b\u8fc7\u7a0b\u4e2dSocket\u670d\u52a1\u5668\u548c\u5ba2\u6237\u7aef\u7684\u5177\u4f53\u64cd\u4f5c\u3002 <\/p>\n

      3.1 \u7f51\u7edc\u901a\u4fe1\u7684\u4e09\u6b21\u63e1\u624b\u4e0e\u56db\u6b21\u6325\u624b <\/h3>\n

      3.1.1 \u4e09\u6b21\u63e1\u624b\u673a\u5236\u7684\u8be6\u89e3 <\/h4>\n

      \u4e09\u6b21\u63e1\u624b\u662fTCP\u534f\u8bae\u7528\u4e8e\u5efa\u7acb\u8fde\u63a5\u7684\u4e00\u4e2a\u8fc7\u7a0b，\u786e\u4fdd\u53cc\u65b9\u90fd\u51c6\u5907\u597d\u8fdb\u884c\u6570\u636e\u4ea4\u6362\u3002\u4ee5\u4e0b\u662f\u5177\u4f53\u7684\u6b65\u9aa4： <\/p>\n

    • SYN(SYNchronize Sequence Numbers) ：\u5ba2\u6237\u7aef\u53d1\u9001\u4e00\u4e2aSYN（\u540c\u6b65\u5e8f\u5217\u7f16\u53f7）\u6807\u5fd7\u7684\u62a5\u6587\u7ed9\u670d\u52a1\u7aef\u3002\u8fd9\u4e2a\u62a5\u6587\u4e0d\u643a\u5e26\u6570\u636e，\u4f46\u662f\u4f1a\u6d88\u8017\u4e00\u4e2a\u5e8f\u5217\u53f7\u3002 <\/li>\n
    • SYN-ACK(SYNchronize-ACK) ：\u670d\u52a1\u7aef\u56de\u5e94\u4e00\u4e2aSYN-ACK\u62a5\u6587\u3002\u8be5\u62a5\u6587\u786e\u8ba4\u6536\u5230\u4e86\u5ba2\u6237\u7aef\u7684\u540c\u6b65\u8bf7\u6c42，\u5e76\u53d1\u9001\u4e00\u4e2a\u81ea\u5df1\u7684\u540c\u6b65\u5e8f\u5217\u53f7\u3002 <\/li>\n
    • ACK(Acknowledgement) ：\u5ba2\u6237\u7aef\u6700\u540e\u56de\u5e94\u4e00\u4e2aACK\u62a5\u6587，\u786e\u8ba4\u6536\u5230\u4e86\u670d\u52a1\u7aef\u7684\u540c\u6b65\u5e8f\u5217\u53f7\u3002 <\/li>\n

      \u4e0b\u9762\u662f\u4ee3\u7801\u5757\u7684\u903b\u8f91\u5206\u6790，\u6a21\u62df\u4e09\u6b21\u63e1\u624b\u8fc7\u7a0b\u4e2d\u7684\u62a5\u6587\u4ea4\u6362： <\/p>\n

      import socket<\/p>\n

      # \u5ba2\u6237\u7aef\u53d1\u8d77\u8fde\u63a5\u8bf7\u6c42
      \nclient_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
      \nclient_socket.connect(('server_ip', server_port))<\/p>\n

      # \u670d\u52a1\u5668\u7aef\u63a5\u53d7\u8fde\u63a5\u8bf7\u6c42
      \nserver_socket, client_address = server_socket.accept()<\/p>\n

      # \u5ba2\u6237\u7aef\u53d1\u9001ACK\u786e\u8ba4
      \nclient_socket.send(b'ACK')<\/p>\n

      # \u670d\u52a1\u5668\u7aef\u6536\u5230ACK\u540e\u786e\u8ba4\u8fde\u63a5\u5efa\u7acb
      \nserver_socket.recv(1024)<\/p>\n

      # \u5173\u95ed\u8fde\u63a5
      \nclient_socket.close()
      \nserver_socket.close()<\/p>\n

      \u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d， socket \u6a21\u5757\u521b\u5efa\u4e86\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u7aef\u7684Socket\u5bf9\u8c61\u3002\u5ba2\u6237\u7aef\u9996\u5148\u53d1\u8d77\u8fde\u63a5\u8bf7\u6c42（SYN），\u670d\u52a1\u7aef\u63a5\u53d7\u8bf7\u6c42\u540e，\u5ba2\u6237\u7aef\u53d1\u9001ACK\u786e\u8ba4，\u670d\u52a1\u5668\u7aef\u901a\u8fc7\u63a5\u6536ACK\u6765\u786e\u8ba4\u8fde\u63a5\u5df2\u7ecf\u5efa\u7acb\u3002 <\/p>\n

      3.1.2 \u56db\u6b21\u6325\u624b\u673a\u5236\u7684\u8be6\u89e3 <\/h4>\n

      \u56db\u6b21\u6325\u624b\u662fTCP\u534f\u8bae\u7528\u4e8e\u65ad\u5f00\u8fde\u63a5\u7684\u4e00\u4e2a\u8fc7\u7a0b，\u5b83\u786e\u4fdd\u53cc\u65b9\u90fd\u540c\u610f\u7ed3\u675f\u8fde\u63a5\u3002\u8fd9\u4e2a\u8fc7\u7a0b\u5982\u4e0b： <\/p>\n

    • FIN(FINish) ：\u4e3b\u52a8\u5173\u95ed\u65b9\u53d1\u9001\u4e00\u4e2aFIN\u62a5\u6587\u7ed9\u5bf9\u65b9，\u8868\u793a\u81ea\u5df1\u6ca1\u6709\u6570\u636e\u8981\u53d1\u9001\u4e86\u3002 <\/li>\n
    • ACK ：\u88ab\u52a8\u5173\u95ed\u65b9\u6536\u5230FIN\u540e，\u53d1\u9001\u4e00\u4e2aACK\u62a5\u6587，\u5e76\u8fdb\u5165CLOSE-WAIT\u72b6\u6001，\u8868\u793a\u6536\u5230\u65ad\u5f00\u8bf7\u6c42\u3002 <\/li>\n
    • FIN ：\u88ab\u52a8\u5173\u95ed\u65b9\u51c6\u5907\u597d\u65ad\u5f00\u8fde\u63a5\u65f6，\u53d1\u9001FIN\u62a5\u6587\u7ed9\u4e3b\u52a8\u5173\u95ed\u65b9\u3002 <\/li>\n
    • ACK ：\u4e3b\u52a8\u5173\u95ed\u65b9\u6536\u5230FIN\u540e，\u53d1\u9001ACK\u62a5\u6587\u786e\u8ba4，\u4e4b\u540e\u8fdb\u5165TIME-WAIT\u72b6\u6001，\u7ecf\u8fc72\u500d\u6700\u5927\u6bb5\u751f\u547d\u5468\u671f(MSL)\u540e\u91ca\u653e\u7aef\u53e3\u3002 <\/li>\n

      \u8fd9\u4e2a\u8fc7\u7a0b\u786e\u4fdd\u4e86\u6570\u636e\u4f20\u8f93\u7684\u5b8c\u6574\u6027，\u5373\u4f7f\u53d1\u751f\u610f\u5916，\u672a\u6536\u5230\u7684\u5305\u4e5f\u6709\u8db3\u591f\u7684\u65f6\u95f4\u88ab\u91cd\u65b0\u4f20\u8f93\u3002 <\/p>\n

      3.2 Socket\u670d\u52a1\u5668\u7684\u5de5\u4f5c\u6d41\u7a0b <\/h3>\n

      3.2.1 \u670d\u52a1\u5668\u76d1\u542c\u3001\u63a5\u53d7\u8fde\u63a5\u4e0e\u6570\u636e\u4ea4\u4e92\u8fc7\u7a0b <\/h4>\n

      Socket\u670d\u52a1\u5668\u9996\u5148\u9700\u8981\u76d1\u542c\u6307\u5b9a\u7aef\u53e3\u4ee5\u7b49\u5f85\u5ba2\u6237\u7aef\u7684\u8fde\u63a5\u8bf7\u6c42\u3002\u4e00\u65e6\u63a5\u6536\u5230\u8bf7\u6c42，\u5b83\u4f1a\u63a5\u53d7\u8fde\u63a5，\u5e76\u5f00\u59cb\u6570\u636e\u4ea4\u4e92\u8fc7\u7a0b\u3002 <\/p>\n

      server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
      \nserver_socket.bind(('localhost', server_port))
      \nserver_socket.listen()<\/p>\n

      print('Server is listening on port:', server_port)<\/p>\n

      # \u7b49\u5f85\u5ba2\u6237\u7aef\u8fde\u63a5
      \nclient_socket, client_address = server_socket.accept()
      \nprint("Connected to client at:", client_address)<\/p>\n

      # \u63a5\u6536\u5ba2\u6237\u7aef\u6570\u636e
      \ndata = client_socket.recv(1024)
      \nprint("Received data:", data)<\/p>\n

      # \u53d1\u9001\u54cd\u5e94\u7ed9\u5ba2\u6237\u7aef
      \nclient_socket.send(b'Echo: ' + data)<\/p>\n

      # \u5173\u95ed\u8fde\u63a5
      \nclient_socket.close()
      \nserver_socket.close()<\/p>\n

      \u4e0a\u9762\u7684\u4ee3\u7801\u4e2d， server_socket \u5bf9\u8c61\u8c03\u7528 bind \u65b9\u6cd5\u7ed1\u5b9a\u670d\u52a1\u5668\u5730\u5740\u548c\u7aef\u53e3， listen \u65b9\u6cd5\u5f00\u59cb\u76d1\u542c\u8fde\u63a5\u8bf7\u6c42\u3002 accept \u65b9\u6cd5\u63a5\u53d7\u6765\u81ea\u5ba2\u6237\u7aef\u7684\u8fde\u63a5，\u4e4b\u540e\u63a5\u6536\u548c\u53d1\u9001\u6570\u636e\u3002 <\/p>\n

      3.2.2 \u670d\u52a1\u5668\u7684\u5e76\u53d1\u5904\u7406\u4e0e\u591a\u7ebf\u7a0b\u7ba1\u7406 <\/h4>\n

      \u5728\u591a\u7528\u6237\u73af\u5883\u4e0b，\u670d\u52a1\u5668\u9700\u8981\u80fd\u591f\u540c\u65f6\u5904\u7406\u591a\u4e2a\u5ba2\u6237\u7aef\u7684\u8fde\u63a5\u3002\u8fd9\u901a\u5e38\u901a\u8fc7\u591a\u7ebf\u7a0b\u6216\u5f02\u6b65IO\u64cd\u4f5c\u6765\u5b9e\u73b0\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u4f7f\u7528\u591a\u7ebf\u7a0b\u7684\u7b80\u5355\u793a\u4f8b： <\/p>\n

      import threading<\/p>\n

      def client_handler(client_socket):
      \n # \u63a5\u6536\u5ba2\u6237\u7aef\u53d1\u9001\u7684\u6570\u636e
      \n data = client_socket.recv(1024)
      \n print("Received data:", data.decode())<\/p>\n

      # \u53d1\u9001\u54cd\u5e94\u7ed9\u5ba2\u6237\u7aef
      \n client_socket.send(b'Echo: ' + data)<\/p>\n

      # \u5173\u95ed\u8fde\u63a5
      \n client_socket.close()<\/p>\n

      server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
      \nserver_socket.bind(('localhost', server_port))
      \nserver_socket.listen()<\/p>\n

      while True:
      \n client_socket, client_address = server_socket.accept()
      \n print("Accepted connection from:", client_address)<\/p>\n

      # \u521b\u5efa\u65b0\u7ebf\u7a0b\u6765\u5904\u7406\u5ba2\u6237\u7aef\u8fde\u63a5
      \n client_thread = threading.Thread(target=client_handler, args=(client_socket,))
      \n client_thread.start()<\/p>\n

      \u5728\u6b64\u4ee3\u7801\u4e2d，\u6bcf\u4e2a\u5ba2\u6237\u7aef\u8fde\u63a5\u90fd\u4f1a\u7531\u4e00\u4e2a\u65b0\u7ebf\u7a0b\u72ec\u7acb\u5904\u7406，\u4ece\u800c\u5b9e\u73b0\u5e76\u53d1\u3002\u8fd9\u662f\u591a\u7ebf\u7a0b\u7ba1\u7406\u7684\u4e00\u4e2a\u57fa\u7840\u4f8b\u5b50，\u5b9e\u9645\u5e94\u7528\u4e2d\u9700\u8981\u8003\u8651\u7ebf\u7a0b\u7684\u540c\u6b65\u548c\u5f02\u5e38\u5904\u7406\u3002 <\/p>\n

      3.3 Socket\u5ba2\u6237\u7aef\u7684\u8fde\u63a5\u4e0e\u6570\u636e\u4ea4\u4e92 <\/h3>\n

      3.3.1 \u5ba2\u6237\u7aef\u53d1\u8d77\u8fde\u63a5\u4e0e\u6570\u636e\u53d1\u9001\u8fc7\u7a0b <\/h4>\n

      \u5ba2\u6237\u7aef\u901a\u8fc7\u521b\u5efaSocket\u5bf9\u8c61\u5e76\u6307\u5b9a\u670d\u52a1\u5668\u7684IP\u5730\u5740\u548c\u7aef\u53e3\u53f7，\u6765\u53d1\u8d77\u8fde\u63a5\u8bf7\u6c42\u3002\u6210\u529f\u8fde\u63a5\u540e，\u5ba2\u6237\u7aef\u5c31\u53ef\u4ee5\u53d1\u9001\u6570\u636e\u4e86\u3002 <\/p>\n

      client_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
      \nclient_socket.connect(('server_ip', server_port))<\/p>\n

      # \u53d1\u9001\u6570\u636e\u7ed9\u670d\u52a1\u5668
      \nclient_socket.send(b'Hello, Server!')<\/p>\n

      # \u63a5\u6536\u670d\u52a1\u5668\u7684\u54cd\u5e94
      \nresponse = client_socket.recv(1024)
      \nprint("Received response:", response.decode())<\/p>\n

      # \u5173\u95ed\u8fde\u63a5
      \nclient_socket.close()<\/p>\n

      3.3.2 \u5ba2\u6237\u7aef\u8fde\u63a5\u5f02\u5e38\u5904\u7406\u548c\u4f18\u5316\u7b56\u7565 <\/h4>\n

      \u5728\u5b9e\u9645\u5e94\u7528\u4e2d，\u7f51\u7edc\u8fde\u63a5\u53ef\u80fd\u4f1a\u9047\u5230\u5404\u79cd\u5f02\u5e38\u60c5\u51b5\u3002\u5ba2\u6237\u7aef\u9700\u8981\u505a\u597d\u5f02\u5e38\u5904\u7406\u6765\u786e\u4fdd\u7a0b\u5e8f\u7684\u5065\u58ee\u6027\u3002 <\/p>\n

      try:
      \n client_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
      \n client_socket.connect(('server_ip', server_port))
      \n # … \u6570\u636e\u53d1\u9001\u4e0e\u63a5\u6536\u64cd\u4f5c
      \nexcept socket.error as e:
      \n print("Socket error:", e)
      \nfinally:
      \n if client_socket:
      \n client_socket.close()<\/p>\n

      \u5f02\u5e38\u5904\u7406\u5305\u62ec\u5bf9 socket.error \u7684\u6355\u83b7，\u786e\u4fdd\u5373\u4f7f\u51fa\u73b0\u9519\u8bef，\u8d44\u6e90\u4e5f\u80fd\u88ab\u6b63\u786e\u91ca\u653e\u3002\u5728\u4f18\u5316\u7b56\u7565\u4e0a，\u53ef\u4ee5\u8003\u8651\u4f7f\u7528\u975e\u963b\u585eIO\u3001\u91cd\u8bd5\u673a\u5236\u7b49\u63d0\u9ad8\u8fde\u63a5\u7684\u6210\u529f\u7387\u548c\u6548\u7387\u3002 <\/p>\n

      \u5728\u4e0b\u4e00\u90e8\u5206，\u6211\u4eec\u5c06\u8be6\u7ec6\u8ba8\u8bba\u5982\u4f55\u5b9e\u73b0\u57fa\u4e8eTCP\u548cUDP\u534f\u8bae\u7684Socket\u670d\u52a1\u5668\u548c\u5ba2\u6237\u7aef，\u6db5\u76d6\u66f4\u5177\u4f53\u7684\u7f16\u7a0b\u5b9e\u8df5\u548c\u4ee3\u7801\u5b9e\u73b0\u3002 <\/p>\n

      4. \u5b9e\u73b0Socket\u670d\u52a1\u5668\u7684\u6b65\u9aa4 <\/h2>\n

      4.1 \u57fa\u4e8eTCP\u534f\u8bae\u7684\u670d\u52a1\u5668\u5b9e\u73b0 <\/h3>\n

      4.1.1 \u7f16\u5199\u670d\u52a1\u5668\u76d1\u542c\u548c\u63a5\u53d7\u8fde\u63a5\u7684\u4ee3\u7801 <\/h4>\n

      \u5728\u5b9e\u73b0TCP\u670d\u52a1\u5668\u65f6，\u9996\u5148\u9700\u8981\u7f16\u5199\u80fd\u591f\u76d1\u542c\u7aef\u53e3\u5e76\u63a5\u53d7\u5ba2\u6237\u7aef\u8fde\u63a5\u7684\u4ee3\u7801\u3002\u4e0b\u9762\u662f\u4e00\u4e2a\u7b80\u5355\u7684TCP\u670d\u52a1\u5668\u793a\u4f8b，\u4f7f\u7528Python\u7f16\u5199： <\/p>\n

      import socket<\/p>\n

      # \u521b\u5efa socket \u5bf9\u8c61
      \nserver_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)<\/p>\n

      # \u83b7\u53d6\u672c\u5730\u4e3b\u673a\u540d
      \nhost = socket.gethostname()
      \nport = 9999<\/p>\n

      # \u7ed1\u5b9a\u7aef\u53e3\u53f7
      \nserver_socket.bind((host, port))<\/p>\n

      # \u8bbe\u7f6e\u6700\u5927\u8fde\u63a5\u6570，\u8d85\u8fc7\u540e\u6392\u961f
      \nserver_socket.listen(5)<\/p>\n

      while True:
      \n # \u5efa\u7acb\u5ba2\u6237\u7aef\u8fde\u63a5
      \n client_socket, addr = server_socket.accept()
      \n print("\u8fde\u63a5\u5730\u5740: %s" % str(addr))
      \n msg = '\u6b22\u8fce\u8bbf\u95ee\u5c0f\u9c7c\u513fIT\u535a\u5ba2！' + "\\\\r\\\\n"
      \n client_socket.send(msg.encode('utf-8'))
      \n client_socket.close()<\/p>\n

      \u5728\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d，\u6211\u4eec\u9996\u5148\u5bfc\u5165\u4e86Python\u7684 socket \u5e93，\u5e76\u521b\u5efa\u4e86\u4e00\u4e2aTCP\u5957\u63a5\u5b57\u3002\u63a5\u7740，\u6211\u4eec\u6307\u5b9a\u4e86\u670d\u52a1\u5668\u7684\u4e3b\u673a\u540d\u548c\u7aef\u53e3\u53f7，\u5e76\u5c06\u5957\u63a5\u5b57\u7ed1\u5b9a\u5230\u8fd9\u4e2a\u5730\u5740\u4e0a\u3002 listen \u65b9\u6cd5\u4f7f\u5957\u63a5\u5b57\u5904\u4e8e\u76d1\u542c\u72b6\u6001，\u5141\u8bb8\u5b83\u63a5\u53d7\u6765\u81ea\u5ba2\u6237\u7aef\u7684\u8fde\u63a5\u8bf7\u6c42\u3002\u5f53\u4e00\u4e2a\u8fde\u63a5\u8bf7\u6c42\u5230\u8fbe\u65f6， accept \u65b9\u6cd5\u63a5\u53d7\u8fde\u63a5\u5e76\u8fd4\u56de\u4e00\u4e2a\u65b0\u7684\u5957\u63a5\u5b57\u7528\u4e8e\u901a\u4fe1\u3002 <\/p>\n

      4.1.2 \u5b9e\u73b0\u6570\u636e\u6536\u53d1\u548c\u8fde\u63a5\u7ba1\u7406\u7684\u903b\u8f91 <\/h4>\n

      \u5728\u670d\u52a1\u5668\u63a5\u53d7\u4e86\u5ba2\u6237\u7aef\u7684\u8fde\u63a5\u4e4b\u540e，\u901a\u5e38\u9700\u8981\u8fdb\u5165\u4e00\u4e2a\u5faa\u73af，\u4ee5\u4fbf\u63a5\u6536\u5ba2\u6237\u7aef\u53d1\u9001\u7684\u6570\u636e\u5e76\u8fdb\u884c\u54cd\u5e94： <\/p>\n

      while True:
      \n # \u63a5\u6536\u5c0f\u4e8e 1024 \u5b57\u8282\u7684\u6570\u636e
      \n data = client_socket.recv(1024)
      \n if not data:
      \n break
      \n # \u6253\u5370\u63a5\u6536\u5230\u7684\u6570\u636e
      \n print("\u6536\u5230\u6570\u636e: %s" % data.decode('utf-8'))
      \n # \u5411\u5ba2\u6237\u7aef\u53d1\u9001\u6570\u636e
      \n client_socket.send("\u670d\u52a1\u5668\u5df2\u6536\u5230\u60a8\u7684\u6d88\u606f：".encode('utf-8'))
      \n client_socket.send(data)
      \n # \u5173\u95ed\u8fde\u63a5
      \n client_socket.close()<\/p>\n

      \u8fd9\u6bb5\u4ee3\u7801\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u6570\u636e\u6536\u53d1\u903b\u8f91，\u670d\u52a1\u5668\u63a5\u6536\u5ba2\u6237\u7aef\u53d1\u9001\u7684\u6570\u636e，\u7136\u540e\u53d1\u9001\u4e00\u4e2a\u54cd\u5e94，\u5e76\u5173\u95ed\u8fde\u63a5\u3002\u5728\u5b9e\u9645\u5e94\u7528\u4e2d，\u53ef\u80fd\u9700\u8981\u6839\u636e\u6570\u636e\u5185\u5bb9\u8fdb\u884c\u66f4\u590d\u6742\u7684\u5904\u7406，\u5e76\u7ba1\u7406\u591a\u4e2a\u5ba2\u6237\u7aef\u8fde\u63a5，\u8fd9\u901a\u5e38\u6d89\u53ca\u5230\u591a\u7ebf\u7a0b\u6216\u5f02\u6b65\u5904\u7406\u6280\u672f\u3002 <\/p>\n

      4.2 \u57fa\u4e8eUDP\u534f\u8bae\u7684\u670d\u52a1\u5668\u5b9e\u73b0 <\/h3>\n

      4.2.1 UDP\u670d\u52a1\u5668\u7aef\u7684\u6570\u636e\u63a5\u6536\u4e0e\u53d1\u9001\u673a\u5236 <\/h4>\n

      UDP\u670d\u52a1\u5668\u7684\u5b9e\u73b0\u76f8\u5bf9\u7b80\u5355，\u56e0\u4e3a\u5b83\u4e0d\u6d89\u53ca\u8fde\u63a5\u5efa\u7acb\u8fc7\u7a0b，\u53ea\u9700\u8981\u76d1\u542c\u7aef\u53e3\u5e76\u63a5\u6536\/\u53d1\u9001\u6570\u636e\u5373\u53ef\u3002\u4e0b\u9762\u662f\u4e00\u4e2aUDP\u670d\u52a1\u5668\u7684\u57fa\u7840\u5b9e\u73b0： <\/p>\n

      import socket<\/p>\n

      # \u521b\u5efa socket \u5bf9\u8c61
      \nserver_socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)<\/p>\n

      # \u83b7\u53d6\u672c\u5730\u4e3b\u673a\u540d
      \nhost = socket.gethostname()
      \nport = 9999<\/p>\n

      # \u7ed1\u5b9a\u7aef\u53e3\u53f7
      \nserver_socket.bind((host, port))<\/p>\n

      print("UDP \u670d\u52a1\u5668\u542f\u52a8，\u7b49\u5f85\u6570\u636e…")<\/p>\n

      while True:
      \n # \u63a5\u6536\u5c0f\u4e8e 1024 \u5b57\u8282\u7684\u6570\u636e
      \n data, addr = server_socket.recvfrom(1024)
      \n print("\u6536\u5230\u6570\u636e: %s" % data.decode('utf-8'))
      \n # \u5411\u5ba2\u6237\u7aef\u53d1\u9001\u6570\u636e
      \n server_socket.sendto("\u670d\u52a1\u5668\u5df2\u6536\u5230\u60a8\u7684\u6d88\u606f".encode('utf-8'), addr)<\/p>\n

      \u4e0eTCP\u4e0d\u540c，UDP\u670d\u52a1\u5668\u4f7f\u7528 recvfrom \u65b9\u6cd5\u6765\u540c\u65f6\u63a5\u6536\u6570\u636e\u548c\u5ba2\u6237\u7aef\u5730\u5740\u3002 sendto \u65b9\u6cd5\u7528\u4e8e\u53d1\u9001\u6570\u636e\u5230\u6307\u5b9a\u7684\u5ba2\u6237\u7aef\u3002 <\/p>\n

      4.2.2 UDP\u534f\u8bae\u7684\u6570\u636e\u5e7f\u64ad\u4e0e\u7ec4\u64ad\u529f\u80fd <\/h4>\n

      UDP\u534f\u8bae\u8fd8\u652f\u6301\u6570\u636e\u5e7f\u64ad\u548c\u7ec4\u64ad\u529f\u80fd，\u8fd9\u5bf9\u4e8e\u9700\u8981\u5411\u591a\u4e2a\u5ba2\u6237\u7aef\u53d1\u9001\u76f8\u540c\u6d88\u606f\u7684\u5e94\u7528\u573a\u666f\u975e\u5e38\u6709\u7528\u3002\u4e0b\u9762\u662f\u4e00\u4e2a\u5e7f\u64ad\u6d88\u606f\u7684\u793a\u4f8b： <\/p>\n

      import socket<\/p>\n

      # \u521b\u5efa socket \u5bf9\u8c61
      \nserver_socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)<\/p>\n

      # \u8bbe\u7f6e\u5957\u63a5\u5b57\u9009\u9879，\u5141\u8bb8\u5e7f\u64ad
      \nserver_socket.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)<\/p>\n

      # \u5e7f\u64ad\u6d88\u606f\u5230\u672c\u5730\u7f51\u7edc
      \nmessage = '\u5e7f\u64ad\u6d88\u606f'
      \nserver_socket.sendto(message.encode('utf-8'), ('<broadcast>', 9999))<\/p>\n

      server_socket.close()<\/p>\n

      \u901a\u8fc7\u8bbe\u7f6e SO_BROADCAST \u5957\u63a5\u5b57\u9009\u9879，\u5e76\u5c06\u76ee\u7684\u5730\u5740\u8bbe\u7f6e\u4e3a\u5e7f\u64ad\u5730\u5740 <broadcast> \u548c\u7aef\u53e3，\u6211\u4eec\u5c31\u53ef\u4ee5\u5411\u6574\u4e2a\u5b50\u7f51\u53d1\u9001\u6d88\u606f\u3002\u7ec4\u64ad\u529f\u80fd\u7684\u5b9e\u73b0\u7c7b\u4f3c，\u4f46\u662f\u9700\u8981\u4f7f\u7528\u7ec4\u64ad\u5730\u5740\u8303\u56f4，\u5e76\u4e14\u53ef\u80fd\u6d89\u53ca\u5230\u7ec4\u64ad\u5957\u63a5\u5b57\u9009\u9879\u7684\u914d\u7f6e\u3002 <\/p>\n

      \u5728\u5b9e\u73b0Socket\u670d\u52a1\u5668\u7684\u8fc7\u7a0b\u4e2d，\u65e0\u8bba\u662f\u57fa\u4e8eTCP\u8fd8\u662fUDP\u534f\u8bae，\u90fd\u9700\u8981\u7ec6\u5fc3\u5904\u7406\u5404\u79cd\u7f51\u7edc\u4e8b\u4ef6\u548c\u5f02\u5e38\u60c5\u51b5\u3002\u670d\u52a1\u5668\u7aef\u7684\u8bbe\u8ba1\u901a\u5e38\u6d89\u53ca\u5230\u5bf9\u5e76\u53d1\u8fde\u63a5\u7684\u5904\u7406，\u6570\u636e\u540c\u6b65，\u4ee5\u53ca\u53ef\u80fd\u7684\u5b89\u5168\u98ce\u9669\u7684\u8003\u8651\u3002\u63a5\u4e0b\u6765\u7684\u7ae0\u8282\u5c06\u4f1a\u4ecb\u7ecd\u5982\u4f55\u5b9e\u73b0\u57fa\u4e8e\u4e0d\u540c\u534f\u8bae\u7684Socket\u5ba2\u6237\u7aef，\u4ee5\u53ca\u5982\u4f55\u5728\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u5668\u4e4b\u95f4\u5efa\u7acb\u53ef\u9760\u7684\u901a\u4fe1\u8fde\u63a5\u3002 <\/p>\n

      5. \u5b9e\u73b0Socket\u5ba2\u6237\u7aef\u7684\u6b65\u9aa4 <\/h2>\n

      5.1 TCP\u5ba2\u6237\u7aef\u7684\u8fde\u63a5\u4e0e\u6570\u636e\u4ea4\u4e92\u5b9e\u73b0 <\/h3>\n

      \u5728TCP\/IP\u7f51\u7edc\u901a\u4fe1\u4e2d，\u5ba2\u6237\u7aef\u901a\u5e38\u8d1f\u8d23\u53d1\u8d77\u8fde\u63a5\u8bf7\u6c42\u3002TCP（\u4f20\u8f93\u63a7\u5236\u534f\u8bae）\u4fdd\u8bc1\u4e86\u6570\u636e\u4f20\u8f93\u7684\u53ef\u9760\u6027，\u56e0\u6b64\u5b83\u5728\u9700\u8981\u6570\u636e\u5b8c\u6574\u6027\u7684\u573a\u5408\u4e2d\u5f97\u5230\u4e86\u5e7f\u6cdb\u7684\u5e94\u7528\u3002 <\/p>\n

      5.1.1 \u6784\u5efaTCP\u5ba2\u6237\u7aef\u4e0e\u670d\u52a1\u5668\u5efa\u7acb\u8fde\u63a5 <\/h4>\n

      \u8981\u6784\u5efa\u4e00\u4e2aTCP\u5ba2\u6237\u7aef，\u9996\u5148\u9700\u8981\u5f15\u5165.NET\u6846\u67b6\u4e2d\u7684 System.Net \u548c System.Net.Sockets \u547d\u540d\u7a7a\u95f4\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684TCP\u5ba2\u6237\u7aef\u793a\u4f8b\u4ee3\u7801： <\/p>\n

      using System;
      \nusing System.Net;
      \nusing System.Net.Sockets;
      \nusing System.Text;
      \nusing System.Threading;<\/p>\n

      public class TcpClientExample
      \n{
      \n public static void Main(string[] args)
      \n {
      \n \/\/ \u521b\u5efa\u4e00\u4e2aTCP\u5ba2\u6237\u7aef
      \n TcpClient client = new TcpClient();
      \n try
      \n {
      \n \/\/ \u8fde\u63a5\u5230\u670d\u52a1\u5668
      \n client.Connect("127.0.0.1", 13000);
      \n Console.WriteLine("Connected to the server.");<\/p>\n

      \/\/ \u83b7\u53d6\u7f51\u7edc\u6d41
      \n NetworkStream stream = client.GetStream();
      \n \/\/ \u53d1\u9001\u6570\u636e\u5230\u670d\u52a1\u5668
      \n byte[] message = Encoding.UTF8.GetBytes("Hello, Server!");
      \n stream.Write(message, 0, message.Length);
      \n Console.WriteLine("Sent: Hello, Server!");
      \n \/\/ \u63a5\u6536\u670d\u52a1\u5668\u54cd\u5e94
      \n data = new byte[256];
      \n int bytes = stream.Read(data, 0, data.Length);
      \n string responseData = Encoding.UTF8.GetString(data, 0, bytes);
      \n Console.WriteLine("Received: {0}", responseData);<\/p>\n

      }
      \n catch (Exception e)
      \n {
      \n Console.WriteLine("Exception: {0}", e.Message);
      \n }
      \n finally
      \n {
      \n \/\/ \u5173\u95ed\u8fde\u63a5
      \n client.Close();
      \n }
      \n }
      \n}<\/p>\n

      \u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d， TcpClient \u5bf9\u8c61\u88ab\u521b\u5efa\u5e76\u7528\u6765\u8fde\u63a5\u670d\u52a1\u5668\u3002\u8fde\u63a5\u6210\u529f\u540e，\u6211\u4eec\u901a\u8fc7 NetworkStream \u8fdb\u884c\u6570\u636e\u7684\u53d1\u9001\u548c\u63a5\u6536\u3002 <\/p>\n

      5.1.2 \u5b9e\u73b0\u5ba2\u6237\u7aef\u6570\u636e\u53d1\u9001\u548c\u63a5\u6536\u6d41\u7a0b <\/h4>\n

      \u6570\u636e\u7684\u53d1\u9001\u548c\u63a5\u6536\u662f\u901a\u8fc7 NetworkStream \u5bf9\u8c61\u5b9e\u73b0\u7684\u3002\u53d1\u9001\u6570\u636e\u65f6，\u6211\u4eec\u9996\u5148\u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u5b57\u8282\u5e8f\u5217，\u7136\u540e\u5199\u5165\u5230\u7f51\u7edc\u6d41\u4e2d\u3002\u63a5\u6536\u6570\u636e\u65f6，\u6211\u4eec\u4ece\u7f51\u7edc\u6d41\u4e2d\u8bfb\u53d6\u5b57\u8282\u6570\u636e\u5e76\u5c06\u5176\u8f6c\u6362\u56de\u5b57\u7b26\u4e32\u3002 <\/p>\n

      \u8981\u6ce8\u610f\u7684\u662f，\u6570\u636e\u53d1\u9001\u548c\u63a5\u6536\u5e94\u8be5\u5728\u4e0d\u540c\u7684\u7ebf\u7a0b\u4e2d\u8fdb\u884c，\u4ee5\u4fbf\u5e94\u7528\u7a0b\u5e8f\u80fd\u591f\u540c\u65f6\u5904\u7406\u5176\u4ed6\u4efb\u52a1（\u6bd4\u5982\u7528\u6237\u754c\u9762\u7684\u66f4\u65b0）\u3002\u6b64\u5916，\u4e3a\u4e86\u907f\u514d\u963b\u585e，\u5e94\u4f7f\u7528\u5f02\u6b65\u6a21\u5f0f\u6765\u8bfb\u5199\u6570\u636e\u6d41\u3002 <\/p>\n

      5.2 UDP\u5ba2\u6237\u7aef\u7684\u6570\u636e\u901a\u4fe1\u5b9e\u73b0 <\/h3>\n

      \u4e0eTCP\u4e0d\u540c，UDP（\u7528\u6237\u6570\u636e\u62a5\u534f\u8bae）\u4e0d\u63d0\u4f9b\u8fde\u63a5\u673a\u5236，\u5b83\u662f\u4e00\u79cd\u65e0\u8fde\u63a5\u7684\u534f\u8bae，\u56e0\u6b64\u5728\u6570\u636e\u4f20\u8f93\u4e0a\u4e0d\u4fdd\u8bc1\u53ef\u9760\u6027\u3002\u7136\u800c，\u7531\u4e8eUDP\u7b80\u5355\u4e14\u5f00\u9500\u5c0f，\u5b83\u9002\u7528\u4e8e\u4e0d\u9700\u8981\u4fdd\u8bc1\u6570\u636e\u5b8c\u6574\u6027\u7684\u573a\u5408\u3002 <\/p>\n

      5.2.1 UDP\u5ba2\u6237\u7aef\u7684\u6570\u636e\u53d1\u9001\u548c\u63a5\u6536\u673a\u5236 <\/h4>\n

      \u5728.NET\u4e2d，\u53ef\u4ee5\u901a\u8fc7 UdpClient \u7c7b\u6765\u521b\u5efaUDP\u5ba2\u6237\u7aef\u3002\u4e0b\u9762\u5c55\u793a\u4e86\u4e00\u4e2aUDP\u5ba2\u6237\u7aef\u53d1\u9001\u548c\u63a5\u6536\u6570\u636e\u7684\u57fa\u672c\u6d41\u7a0b： <\/p>\n

      using System;
      \nusing System.Net;
      \nusing System.Net.Sockets;
      \nusing System.Text;<\/p>\n

      public class UdpClientExample
      \n{
      \n public static void Main(string[] args)
      \n {
      \n \/\/ \u521b\u5efaUDP\u5ba2\u6237\u7aef
      \n UdpClient client = new UdpClient();<\/p>\n

      try
      \n {
      \n \/\/ \u8fde\u63a5\u5230\u8fdc\u7a0b\u4e3b\u673a
      \n client.Connect("127.0.0.1", 13000);<\/p>\n

      \/\/ \u53d1\u9001\u6570\u636e
      \n string message = "Hello, Server!";
      \n byte[] data = Encoding.UTF8.GetBytes(message);
      \n client.Send(data, data.Length);<\/p>\n

      Console.WriteLine("Sent: {0}", message);<\/p>\n

      \/\/ \u63a5\u6536\u54cd\u5e94
      \n data = client.Receive(ref remoteEp);
      \n string responseData = Encoding.UTF8.GetString(data);
      \n Console.WriteLine("Received: {0}", responseData);<\/p>\n

      }
      \n catch (Exception e)
      \n {
      \n Console.WriteLine(e);
      \n }
      \n finally
      \n {
      \n \/\/ \u5173\u95ed\u5ba2\u6237\u7aef
      \n client.Close();
      \n }
      \n }
      \n}<\/p>\n

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