{"id":47157,"date":"2025-07-30T06:36:51","date_gmt":"2025-07-29T22:36:51","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/47157.html"},"modified":"2025-07-30T06:36:51","modified_gmt":"2025-07-29T22:36:51","slug":"tcp%e6%9c%8d%e5%8a%a1%e5%99%a8%ef%bc%9a%e4%bb%8e%e4%b8%80%e8%af%b7%e6%b1%82%e4%b8%80%e7%ba%bf%e7%a8%8b%e5%88%b0%e7%99%be%e4%b8%87%e5%b9%b6%e5%8f%91","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/47157.html","title":{"rendered":"TCP\u670d\u52a1\u5668\uff1a\u4ece\u4e00\u8bf7\u6c42\u4e00\u7ebf\u7a0b\u5230\u767e\u4e07\u5e76\u53d1"},"content":{"rendered":"<\/p>\n<h4>\u6587\u7ae0\u76ee\u5f55<\/h4>\n<ul>\n<li>TCP\u670d\u52a1\u5668&#xff1a;\u4ece\u4e00\u8bf7\u6c42\u4e00\u7ebf\u7a0b\u5230\u767e\u4e07\u5e76\u53d1<\/li>\n<li>\n<ul>\n<li>\u5f15\u8a00<\/li>\n<li>\u4ee3\u7801\u5b9e\u73b0<\/li>\n<li>\u95ee\u9898\u4e0e\u89e3\u51b3\u65b9\u6848<\/li>\n<li>\n<ul>\n<li>\u95ee\u9898\u4e00&#xff1a;\u540c\u6837\u662f\u7528\u4e8e\u5904\u7406\u5e76\u53d1\u7684&#096;select&#096;&#xff0c;\u5b83\u4e0e&#096;epoll&#096;\u6709\u4ec0\u4e48\u4e0d\u540c&#xff0c;\u5404\u6709\u4ec0\u4e48\u4f7f\u7528\u573a\u666f&#xff1f;<\/li>\n<li>\u95ee\u9898\u4e8c&#xff1a;\u5e38\u6709\u6587\u4ef6\u64cd\u4f5c\u7b26\u6709\u54ea\u4e9b\u7c7b\u578b&#xff0c;\u5de5\u4f5c\u539f\u7406\u662f\u4ec0\u4e48&#xff1f;<\/li>\n<\/ul>\n<\/li>\n<li>\u603b\u7ed3<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2>TCP\u670d\u52a1\u5668&#xff1a;\u4ece\u4e00\u8bf7\u6c42\u4e00\u7ebf\u7a0b\u5230\u767e\u4e07\u5e76\u53d1<\/h2>\n<p>\u7b80\u4ecb&#xff1a;\u672c\u6587\u4ecb\u7ecd\u4e86C\u8bed\u8a00\u5b9e\u73b0\u7684\u670d\u52a1\u5668\u5982\u4f55\u4ece\u5355\u7ebf\u7a0b\u65b9\u5f0f\u8fed\u4ee3\u5230\u5177\u6709\u767e\u4e07\u5e76\u53d1\u7684\u6570\u636e\u5904\u7406\u80fd\u529b\u3002<\/p>\n<h3>\u5f15\u8a00<\/h3>\n<p>\u200b \u5728C\/S\u67b6\u6784\u4e2d&#xff0c;\u670d\u52a1\u5668\u626e\u6f14\u63a5\u6536\u8bf7\u6c42\u5904\u7406\u7684\u89d2\u8272&#xff0c;\u4e5f\u5c31\u662f\u8bf4\u5728\u5927\u90e8\u5206\u573a\u666f\u4e0b\u670d\u52a1\u5668\u9700\u8981\u540c\u65f6\u5206\u914d\u5185\u5b58\u5904\u7406\u591a\u4e2a\u7528\u6237\u7684\u8bf7\u6c42\u3002\u5728\u6709\u9650\u7684\u5b58\u50a8\u4e2d\u603b\u6709\u88ab\u8bf7\u6c42\u5360\u6ee1\u7684\u65f6\u5019&#xff0c;\u4e3a\u4e86\u6700\u5927\u9650\u5ea6\u5229\u7528\u7f51\u7edc\u8fde\u63a5\u5373\u7f51\u7edcI\/O&#xff0c;\u5f15\u5165\u4e86select\/epoll\u3002\u5176\u6838\u5fc3\u539f\u7406\u662f\u901a\u8fc7\u5355\u4e2a\u7ebf\u7a0b\u76d1\u63a7\u591a\u4e2a\u6587\u4ef6\u63cf\u8ff0\u7b26\u7684I\/O\u4e8b\u4ef6\u9ad8\u6548\u5904\u7406\u9ad8\u5e76\u53d1\u8fde\u63a5\u3002\u4f46\u4ec5\u4ec5\u901a\u8fc7\u4ee5\u4e0a\u6280\u672f\u8fd8\u4e0d\u8db3\u4ee5\u505a\u5230Linux\u5e73\u53f0\u4e0a\u7684\u767e\u4e07\u5e76\u53d1&#xff0c;\u5728Linux\u64cd\u4f5c\u7cfb\u7edf\u4e2d\u5f80\u5f80\u6709\u591a\u65b9\u9762\u7684\u9650\u5236&#xff0c;\u8fdb\u4e00\u6b65\u4fee\u6539\u4f18\u5316\u624d\u80fd\u5b9e\u73b0\u767e\u4e07\u5e76\u53d1\u3002<\/p>\n<h3>\u4ee3\u7801\u5b9e\u73b0<\/h3>\n<p>\u200b \u5728\u4e3b\u51fd\u6570\u4e2d\u58f0\u660esocket\u5957\u63a5\u5b57&#xff0c;\u7528\u4e8e\u76d1\u542c\u7528\u6237\u8bf7\u6c42\u3002\u63a5\u6536\u5230\u7528\u6237\u8bf7\u6c42&#xff0c;\u4f7f\u7528\u7ebf\u7a0b\u6216epoll\u5904\u7406\u3002<\/p>\n<li>\u4e00\u8bf7\u6c42\u4e00\u7ebf\u7a0b<\/li>\n<p>\u200b \u5bf9\u4e8e\u6bcf\u4e2a\u6765\u81ea\u4e8e\u5ba2\u6237\u7aef\u7684\u8bf7\u6c42&#xff0c;\u90fd\u65b0\u5efa\u4e00\u4e2a\u7ebf\u7a0b\u53bb\u5904\u7406\u3002<\/p>\n<p><span class=\"token keyword\">int<\/span> sockfd <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">socket<\/span><span class=\"token punctuation\">(<\/span>AF_INET<span class=\"token punctuation\">,<\/span>SOCK_STREAM<span class=\"token punctuation\">,<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">sockaddr_in<\/span> addr<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">memset<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>addr<span class=\"token punctuation\">,<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span><span class=\"token keyword\">sizeof<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">sockaddr_in<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    addr<span class=\"token punctuation\">.<\/span>sin_family <span class=\"token operator\">&#061;<\/span> AF_INET<span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/\u4f7f\u7528\u7684\u534f\u8bae\u65cf<\/span><br \/>\n    addr<span class=\"token punctuation\">.<\/span>sin_port <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">htons<\/span><span class=\"token punctuation\">(<\/span>port<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    addr<span class=\"token punctuation\">.<\/span>sin_addr<span class=\"token punctuation\">.<\/span>s_addr <span class=\"token operator\">&#061;<\/span> INADDR_ANY<span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/\u4ee4\u5730\u5740\u4e3a 0.0.0.0<\/span><\/p>\n<p>\u200b SOCK_STREAM\u8bbe\u5b9a\u670d\u52a1\u5668\u7aef\u91c7\u7528TCP\u901a\u4fe1\u534f\u8bae&#xff0c;INADDR_ANY\u6ce8\u518c\u5730\u5740\u4e3a0.0.0.0\u7528\u4e8e\u76d1\u542c\u6240\u6709\u7f51\u7edc\u7684\u8fde\u63a5\u8bf7\u6c42\u3002\u5c06socket\u4e0e\u5730\u5740\u4fe1\u606f\u8fdb\u884c\u7ed1\u5b9a\u540e\u5f00\u59cb\u76d1\u542c\u8bf7\u6c42\u3002\u4f7f\u7528listen()\u88ab\u52a8\u76d1\u542c\u8fde\u63a5&#xff0c;\u6bcf\u4e2a\u5ba2\u6237\u7aef\u8bf7\u6c42\u8fc7\u6765\u4e0e\u670d\u52a1\u5668\u8fdb\u884c\u4e09\u6b21\u63e1\u624b\u5efa\u7acb\u8fde\u63a5\u5e76\u88ab\u653e\u5165\u8fde\u63a5\u961f\u5217&#xff0c;\u6b64\u65f6\u670d\u52a1\u5668\u8c03\u7528accept()\u5f97\u5230\u8fde\u63a5\u961f\u5217\u7684\u5957\u63a5\u5b57\u63cf\u8ff0\u7b26\u3002\u901a\u8fc7\u521b\u5efa\u7ebf\u7a0b\u8fdb\u884c\u5904\u7406\u3002<\/p>\n<p><span class=\"token function\">bind<\/span><span class=\"token punctuation\">(<\/span>sockfd<span class=\"token punctuation\">,<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">sockaddr<\/span><span class=\"token operator\">*<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">&amp;<\/span>addr<span class=\"token punctuation\">,<\/span><span class=\"token keyword\">sizeof<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">sockaddr_in<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token function\">listen<\/span><span class=\"token punctuation\">(<\/span>sockfd<span class=\"token punctuation\">,<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">while<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><\/p>\n<p>        <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">sockaddr_in<\/span> client_addr<span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token function\">memset<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>client_addr<span class=\"token punctuation\">,<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span><span class=\"token keyword\">sizeof<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">sockaddr_in<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">socklen_t<\/span> client_len <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">sizeof<\/span><span class=\"token punctuation\">(<\/span>client_addr<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">int<\/span> clientfd <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">accept<\/span><span class=\"token punctuation\">(<\/span>sockfd<span class=\"token punctuation\">,<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">sockaddr<\/span><span class=\"token operator\">*<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">&amp;<\/span>client_addr<span class=\"token punctuation\">,<\/span><span class=\"token operator\">&amp;<\/span>client_len<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/\u521b\u5efa\u7ebf\u7a0b\u5904\u7406\u8be5\u8bf7\u6c42<\/span><br \/>\n        <span class=\"token class-name\">pthread_t<\/span> threadid<span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token function\">pthread_create<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>threadid<span class=\"token punctuation\">,<\/span><span class=\"token constant\">NULL<\/span><span class=\"token punctuation\">,<\/span>client_routine<span class=\"token punctuation\">,<\/span><span class=\"token operator\">&amp;<\/span>clientfd<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n   <span class=\"token punctuation\">}<\/span><\/p>\n<p>\u200b \u5728\u56de\u8c03\u51fd\u6570\u4e2d\u5904\u7406\u5ba2\u6237\u7aef\u7684\u8bf7\u6c42&#xff0c;recv()\u53d6\u51fa\u5ba2\u6237\u7aef\u53d1\u9001\u7684\u6570\u636e&#xff0c;\u53ea\u6709\u5f53\u8be5\u51fd\u6570\u8fd4\u56de\u503c&gt;0\u65f6\u8be5\u51fd\u6570\u6210\u529f\u63a5\u6536\u5230\u6570\u636e\u3002<\/p>\n<p><span class=\"token keyword\">void<\/span><span class=\"token operator\">*<\/span> <span class=\"token function\">client_routine<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span><span class=\"token operator\">*<\/span> arg<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><\/p>\n<p>    <span class=\"token keyword\">int<\/span> client_fd <span class=\"token operator\">&#061;<\/span> <span class=\"token operator\">*<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> <span class=\"token operator\">*<\/span><span class=\"token punctuation\">)<\/span>arg<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">while<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">char<\/span> buffer<span class=\"token punctuation\">[<\/span>BUFFER_LENGTH<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token keyword\">int<\/span> len <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">recv<\/span><span class=\"token punctuation\">(<\/span>client_fd<span class=\"token punctuation\">,<\/span>buffer<span class=\"token punctuation\">,<\/span>BUFFER_LENGTH<span class=\"token punctuation\">,<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span>len <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><span class=\"token comment\">\/\/\u9519\u8bef\u53d1\u751f<\/span><br \/>\n            <span class=\"token function\">close<\/span><span class=\"token punctuation\">(<\/span>client_fd<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token keyword\">break<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><span class=\"token keyword\">else<\/span> <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span>len <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><span class=\"token comment\">\/\/\u8fde\u63a5\u5df2\u5173\u95ed<\/span><br \/>\n            <span class=\"token function\">close<\/span><span class=\"token punctuation\">(<\/span>client_fd<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token keyword\">break<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><span class=\"token keyword\">else<\/span><span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token function\">printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;Recv: %s, %d byte(s)\\\\n&#034;<\/span><span class=\"token punctuation\">,<\/span>buffer<span class=\"token punctuation\">,<\/span>len<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u200b \u501f\u7528\u5de5\u5177NetAssist\u8f93\u5165\u670d\u52a1\u5668Ip\u4e0e\u7aef\u53e3\u53f7\u53d1\u9001\u6570\u636e&#xff0c;\u5f97\u5230\u5982\u4e0b\u7ed3\u679c\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/07\/20250729223646-68894cfeda736.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<li>epoll\u590d\u7528<\/li>\n<p>\u200b \u4e0e\u65b9\u6848\u4e00\u7c7b\u4f3c&#xff0c;\u9700\u8981\u521d\u59cb\u5316\u5957\u63a5\u5b57\u4e0e\u5730\u5740\u7ed3\u6784\u4f53\u7ed1\u5b9a&#xff0c;\u5f00\u59cb\u76d1\u542c\u3002\u6b64\u5904\u76f8\u8f83\u4e8e\u65b9\u6848\u4e00\u521d\u59cb\u5316epoll\u5f97\u5230\u6587\u4ef6\u63cf\u8ff0\u7b26\u3002<\/p>\n<p><span class=\"token keyword\">int<\/span> epfd <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">epoll_create<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/\u6b64\u5904\u53c2\u6570\u53ea\u9700\u8981&gt;0<\/span><\/p>\n<p>\u200b \u521d\u59cb\u5316epoll_event\u6570\u7ec4\u7528\u4e8e\u5b58\u653e\u6240\u6709\u7684\u7528\u6237\u8bf7\u6c42\u3002\u5b9a\u4e49\u5177\u4f53\u4e8b\u4ef6\u7528\u4e8e\u548c\u5957\u63a5\u5b57\u7ed1\u5b9a\u3002\u6700\u540eepoll_ctl()\u4ea4\u4ed8epoll\u7edf\u4e00\u7ba1\u7406\u3002<\/p>\n<p><span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">epoll_event<\/span> events<span class=\"token punctuation\">[<\/span>EPOLL_SIZE<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/\u5c06\u76d1\u542c\u7684fd\u4ea4\u7ed9epoll\u7ba1\u7406<\/span><br \/>\n    <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">epoll_event<\/span> ev<span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/\u7528\u4e8e\u5904\u7406\u5df2\u6709\u7684io listen<\/span><br \/>\n    ev<span class=\"token punctuation\">.<\/span>events <span class=\"token operator\">&#061;<\/span> EPOLLIN<span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/\u53ea\u5173\u6ce8\u8f93\u5165<\/span><br \/>\n    ev<span class=\"token punctuation\">.<\/span>data<span class=\"token punctuation\">.<\/span>fd <span class=\"token operator\">&#061;<\/span> sockfd<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token function\">epoll_ctl<\/span><span class=\"token punctuation\">(<\/span>epfd<span class=\"token punctuation\">,<\/span>EPOLL_CTL_ADD<span class=\"token punctuation\">,<\/span>sockfd<span class=\"token punctuation\">,<\/span><span class=\"token operator\">&amp;<\/span>ev<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>\u200b \u6b64\u65f6\u670d\u52a1\u5668\u6301\u7eed\u76d1\u542c\u7b49\u5f85\u5ba2\u6237\u7aef\u8fde\u63a5&#xff0c;epoll_wait()\u8fd4\u56de\u5c31\u7eea\u4e8b\u4ef6\u5373\u4e09\u62a5\u6587\u63e1\u624b\u6210\u529f\u7684\u8fde\u63a5\u7684\u6570\u91cf\u3002<\/p>\n<p><span class=\"token keyword\">int<\/span> nready <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">epoll_wait<\/span><span class=\"token punctuation\">(<\/span>epfd<span class=\"token punctuation\">,<\/span>events<span class=\"token punctuation\">,<\/span>EPOLL_SIZE<span class=\"token punctuation\">,<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span>nready <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">continue<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>\u200b \u56e0\u4e3aepoll\u5c06\u6240\u6709\u7684I\/O\u7edf\u4e00\u7ba1\u7406&#xff0c;\u6240\u4ee5\u9700\u8981\u5224\u65ad\u5f53\u524d\u7684\u5c31\u7eea\u4e8b\u4ef6\u662f\u5426\u662f\u7531sockfd\u89e6\u53d1\u3002<\/p>\n<p><span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span>events<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">.<\/span>data<span class=\"token punctuation\">.<\/span>fd <span class=\"token operator\">&#061;&#061;<\/span> sockfd<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><span class=\"token comment\">\/\/\u68c0\u67e5\u5f53\u524d\u4e8b\u4ef6\u662f\u5426\u7531sockfd\u89e6\u53d1 listen_fd client_fd<\/span><\/p>\n<p>        <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">sockaddr_in<\/span> client_addr<span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token function\">memset<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>client_addr<span class=\"token punctuation\">,<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span><span class=\"token keyword\">sizeof<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">sockaddr_in<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">socklen_t<\/span> client_len <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">sizeof<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">sockaddr_in<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token keyword\">int<\/span> clientfd <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">accept<\/span><span class=\"token punctuation\">(<\/span>sockfd<span class=\"token punctuation\">,<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">sockaddr<\/span><span class=\"token operator\">*<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">&amp;<\/span>client_addr<span class=\"token punctuation\">,<\/span><span class=\"token operator\">&amp;<\/span>client_len<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>         <span class=\"token comment\">\/\/EPOLLET \u8fb9\u7f18\u89e6\u53d1\u6a21\u5f0f \u4e00\u6b21\u6027\u5c06\u6570\u636e\u8bfb\u5b8c<\/span><br \/>\n         <span class=\"token comment\">\/\/EPOLLLT \u6c34\u5e73\u8f93\u51fa\u6a21\u5f0f \u4e00\u76f4\u5728\u63a5\u53d7\u6570\u636e<\/span><br \/>\n         ev<span class=\"token punctuation\">.<\/span>events <span class=\"token operator\">&#061;<\/span> EPOLLIN <span class=\"token operator\">|<\/span> EPOLLET<span class=\"token punctuation\">;<\/span><br \/>\n         ev<span class=\"token punctuation\">.<\/span>data<span class=\"token punctuation\">.<\/span>fd <span class=\"token operator\">&#061;<\/span> clientfd<span class=\"token punctuation\">;<\/span><br \/>\n         <span class=\"token function\">epoll_ctl<\/span><span class=\"token punctuation\">(<\/span>epfd<span class=\"token punctuation\">,<\/span>EPOLL_CTL_ADD<span class=\"token punctuation\">,<\/span>clientfd<span class=\"token punctuation\">,<\/span><span class=\"token operator\">&amp;<\/span>ev<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n      <span class=\"token punctuation\">}<\/span><\/p>\n<p>\u200b \u5224\u65ad\u7ed3\u679c\u4e3a\u771f&#xff0c;\u8fdb\u5165if\u6761\u4ef6&#xff0c;accept()\u4ece\u961f\u5217\u4e2d\u53d6\u51fa\u4e00\u4e2a\u5c31\u7eea\u4e8b\u4ef6\u8fd4\u56de\u64cd\u4f5c\u7b26\u3002\u5c06\u8be5\u4e8b\u4ef6\u8bbe\u7f6e\u4e3a\u53ef\u8bfb\u5e76\u4e14\u8fb9\u7f18\u89e6\u53d1ev.events &#061; EPOLLIN | EPOLLET\u3002\u5bf9\u4e8e\u4e8b\u4ef6\u5e38\u6709\u4e24\u79cd\u89e6\u53d1\u65b9\u5f0f&#xff1a;\u8fb9\u7f18\u89e6\u53d1\u3001\u6c34\u5e73\u89e6\u53d1\u3002\u8fb9\u7f18\u89e6\u53d1\u65b9\u5f0f\u4ec5\u5728\u6587\u4ef6\u63cf\u8ff0\u7b26\u53d1\u751f\u53d8\u5316\u65f6\u89e6\u53d1\u4e00\u6b21(\u7c7b\u4f3c\u4e8e\u4fe1\u53f7\u4ece0\u8df3\u53d8\u4e3a1)&#xff0c;\u4f46\u540e\u7eed\u4e0d\u4f1a\u518d\u6709\u901a\u77e5&#xff0c;\u6b64\u65f6\u8bfb\u53d6\u6570\u636e\u5c31\u9700\u8981\u4e00\u76f4\u8bfb\u5230EAGAIN&#xff1b;\u6c34\u5e73\u89e6\u53d1\u5219\u662f\u5f53\u6587\u4ef6\u5904\u4e8e\u5c31\u7eea\u72b6\u6001\u5c31\u4f1a\u6301\u7eed\u89e6\u53d1\u4e8b\u4ef6\u901a\u77e5(\u4fe1\u53f7\u4ece0\u8df3\u53d8\u4e3a1\u4ee5\u53ca\u4fdd\u6301\u4fe1\u53f7\u57281\u72b6\u6001)\u3002<\/p>\n<p>\u200b \u6700\u540eepoll_ctl()\u5c06\u5c31\u7eeaI\/O\u64cd\u4f5c\u7b26\u4ea4\u4ed8epoll\u52a0\u5165\u7ba1\u7406\u961f\u5217\u4e2d\u3002<\/p>\n<p>\u200b \u5728epoll_events\u4e2d\u90a3\u4e9b\u5e76\u4e0d\u662f\u7531sockfd\u89e6\u53d1\u7684\u4e8b\u4ef6&#xff0c;\u53ea\u53ef\u80fd\u662f\u88ab\u4e0a\u4e00\u6b65\u5904\u7406\u5b8c\u7684\u5ba2\u6237\u7aef\u6587\u4ef6\u64cd\u4f5c\u7b26clientfd\u3002\u4f9d\u6b21\u53d6\u5230\u6587\u4ef6\u64cd\u4f5c\u7b26int clientfd &#061; events[i].data.fd&#xff0c;\u4f7f\u7528recv()\u53d6\u5230\u5ba2\u6237\u7aef\u53d1\u9001\u7684\u6570\u636e\u3002<\/p>\n<p><span class=\"token keyword\">else<\/span><span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token keyword\">int<\/span> clientfd <span class=\"token operator\">&#061;<\/span> events<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">.<\/span>data<span class=\"token punctuation\">.<\/span>fd<span class=\"token punctuation\">;<\/span><br \/>\n                <span class=\"token keyword\">char<\/span> buffer<span class=\"token punctuation\">[<\/span>BUFFER_LENGTH<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                <span class=\"token keyword\">int<\/span> len <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">recv<\/span><span class=\"token punctuation\">(<\/span>clientfd<span class=\"token punctuation\">,<\/span>buffer<span class=\"token punctuation\">,<\/span>BUFFER_LENGTH<span class=\"token punctuation\">,<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>                <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span>len <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><br \/>\n                    <span class=\"token function\">close<\/span><span class=\"token punctuation\">(<\/span>clientfd<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                    ev<span class=\"token punctuation\">.<\/span>events <span class=\"token operator\">&#061;<\/span> EPOLLIN<span class=\"token punctuation\">;<\/span><br \/>\n                    ev<span class=\"token punctuation\">.<\/span>data<span class=\"token punctuation\">.<\/span>fd <span class=\"token operator\">&#061;<\/span> clientfd<span class=\"token punctuation\">;<\/span><br \/>\n                    <span class=\"token function\">epoll_ctl<\/span><span class=\"token punctuation\">(<\/span>epfd<span class=\"token punctuation\">,<\/span>EPOLL_CTL_DEL<span class=\"token punctuation\">,<\/span>clientfd<span class=\"token punctuation\">,<\/span><span class=\"token operator\">&amp;<\/span>ev<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                <span class=\"token punctuation\">}<\/span><span class=\"token keyword\">else<\/span> <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span>len <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><br \/>\n                    <span class=\"token function\">close<\/span><span class=\"token punctuation\">(<\/span>clientfd<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                    ev<span class=\"token punctuation\">.<\/span>events <span class=\"token operator\">&#061;<\/span> EPOLLIN<span class=\"token punctuation\">;<\/span><br \/>\n                    ev<span class=\"token punctuation\">.<\/span>data<span class=\"token punctuation\">.<\/span>fd <span class=\"token operator\">&#061;<\/span> clientfd<span class=\"token punctuation\">;<\/span><br \/>\n                    <span class=\"token function\">epoll_ctl<\/span><span class=\"token punctuation\">(<\/span>epfd<span class=\"token punctuation\">,<\/span>EPOLL_CTL_DEL<span class=\"token punctuation\">,<\/span>clientfd<span class=\"token punctuation\">,<\/span><span class=\"token operator\">&amp;<\/span>ev<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                <span class=\"token punctuation\">}<\/span><span class=\"token keyword\">else<\/span><span class=\"token punctuation\">{<\/span><br \/>\n                    <span class=\"token function\">printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;Recv: %s, %d byte(s)\\\\n&#034;<\/span><span class=\"token punctuation\">,<\/span>buffer<span class=\"token punctuation\">,<\/span>len<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                <span class=\"token punctuation\">}<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><\/p>\n<p>\u200b \u8fd0\u884c\u670d\u52a1\u5668\u7aef\u7a0b\u5e8f&#xff0c;\u76d1\u542c8888\u7aef\u53e3\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/07\/20250729223647-68894cffacb93.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<li>\u767e\u4e07\u5e76\u53d1<\/li>\n<p>\u200b \u6240\u8c13\u7684\u767e\u4e07\u5e76\u53d1\u4e5f\u5c31\u662f\u8bf4\u5728\u670d\u52a1\u5668\u5d29\u6e83\u4e4b\u524d\u80fd\u591f\u627f\u8f7d\u7684\u8fde\u63a5\u6570\u91cf&#xff0c;\u672c\u6587\u91c7\u7528\u672c\u5730\u865a\u62df\u673a\u6d4b\u8bd5\u8fde\u63a5\u6570\u3002\u5728\u53e6\u4e09\u4e2a\u865a\u62df\u673a\u4e0a\u8fd0\u884c\u5ba2\u6237\u7aef\u4ee3\u7801\u5411\u670d\u52a1\u5668\u53d1\u8d77\u8fde\u63a5\u8bf7\u6c42&#xff0c;\u6d4b\u8bd5\u670d\u52a1\u5668\u7684\u6700\u5927\u53ef\u4fdd\u6301\u8fde\u63a5\u6570\u3002\u4e09\u4e2a\u865a\u62df\u673a\u91c7\u7528\u76f8\u540c\u914d\u7f6e\u3002<\/p>\n<p>\u200b <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/07\/20250729223648-68894d009d6c3.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<ul>\n<li>\u5ba2\u6237\u7aef<\/li>\n<\/ul>\n<p>\u200b \u5c06\u9700\u8981\u8fde\u63a5\u7684\u670d\u52a1\u5668IP\u53ca\u7aef\u53e3\u53f7\u4f5c\u4e3a\u53c2\u6570\u8f93\u5165&#xff0c;\u521d\u59cb\u5316\u53d1\u9001\u6570\u636e\u7684\u7f13\u51b2\u533a&#xff0c;\u5b9a\u4e49epoll\u4e8b\u4ef6&#xff0c;\u5c06\u5176\u6700\u5927\u5904\u7406\u4e8b\u4ef6\u6570\u91cf\u8bbe\u7f6e\u4e3aMAX_EPOLLSIZE\u3002<\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">define<\/span> <span class=\"token macro-name\">MAX_EPOLLSIZE<\/span>       <span class=\"token expression\"><span class=\"token punctuation\">(<\/span><span class=\"token number\">384<\/span><span class=\"token operator\">*<\/span><span class=\"token number\">1024<\/span><span class=\"token punctuation\">)<\/span><\/span><\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> argc<span class=\"token punctuation\">,<\/span><span class=\"token keyword\">char<\/span><span class=\"token operator\">*<\/span><span class=\"token operator\">*<\/span> argv<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><\/p>\n<p>    <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">char<\/span><span class=\"token operator\">*<\/span> ip <span class=\"token operator\">&#061;<\/span> argv<span class=\"token punctuation\">[<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> port <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">atoi<\/span><span class=\"token punctuation\">(<\/span>argv<span class=\"token punctuation\">[<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> connections <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">char<\/span> buffer<span class=\"token punctuation\">[<\/span><span class=\"token number\">128<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span>index <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">epoll_event<\/span> events<span class=\"token punctuation\">[<\/span>MAX_EPOLLSIZE<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">int<\/span> epoll_fd <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">epoll_create<\/span><span class=\"token punctuation\">(<\/span>MAX_EPOLLSIZE<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token function\">strcpy<\/span><span class=\"token punctuation\">(<\/span>buffer<span class=\"token punctuation\">,<\/span><span class=\"token string\">&#034; Data From MulClient\\\\n&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">sockaddr_in<\/span> addr <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">memset<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>addr<span class=\"token punctuation\">,<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span><span class=\"token keyword\">sizeof<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">sockaddr_in<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    addr<span class=\"token punctuation\">.<\/span>sin_family <span class=\"token operator\">&#061;<\/span> AF_INET<span class=\"token punctuation\">;<\/span><br \/>\n    addr<span class=\"token punctuation\">.<\/span>sin_addr<span class=\"token punctuation\">.<\/span>s_addr <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">inet_addr<\/span><span class=\"token punctuation\">(<\/span>ip<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">timeval<\/span> tv_begin<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">gettimeofday<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>tv_begin<span class=\"token punctuation\">,<\/span><span class=\"token constant\">NULL<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/\u83b7\u53d6\u5f53\u524d\u65f6\u95f4 \u5b58\u50a8\u7ed3\u679c \u65f6\u533a<\/span><\/p>\n<p>\u200b \u5faa\u73af\u5411\u670d\u52a1\u5668\u53d1\u8d77\u8bf7\u6c42&#xff0c;\u5c06\u8bf7\u6c42\u8bbe\u7f6e\u4e3a\u975e\u963b\u585e\u72b6\u6001\u4ea4\u4ed8\u7ed9epoll\u7edf\u4e00\u7ba1\u7406\u3002\u5728TCP\u4e2d\u6bcf\u4e00\u4e2a\u8fde\u63a5\u90fd\u7531\u4e00\u4e2a\u56db\u5143\u7ec4\u786e\u5b9a&#xff1a;(\u6e90IP,\u6e90\u7aef\u53e3,\u76ee\u7684IP,\u76ee\u7684\u7aef\u53e3)\u3002\u670d\u52a1\u5668\u901a\u8fc7\u76ee\u6807\u7aef\u53e3\u533a\u5206\u670d\u52a1&#xff0c;\u5ba2\u6237\u7aef\u9700\u8981\u6e90\u7aef\u53e3\u533a\u5206\u4e0d\u540c\u8fde\u63a5\u3002\u82e5\u5ba2\u6237\u7aef\u4ec5\u4f7f\u7528\u4e00\u4e2a\u7aef\u53e3&#xff0c;\u5219\u5176\u6700\u591a\u53ef\u4ee5\u5efa\u7acb65535(2&lt;sup&gt;16&lt;\/sup&gt; &#8211; 1)\u4e2a\u8fde\u63a5&#xff0c;\u4e14\u5728\u5177\u4f53\u7684\u64cd\u4f5c\u7cfb\u7edf\u4e2d\u5bf9\u5355\u4e2a\u7aef\u53e3\u7684\u5e76\u53d1\u8fde\u63a5\u6570\u91cf\u4ecd\u6709\u9650\u5236\u3002\u6240\u4ee5\u6700\u597d\u7684\u65b9\u5f0f\u4f7f\u7528100\u4e2a\u7aef\u53e3\u5411\u670d\u52a1\u5668\u53d1\u8d77\u8fde\u63a5\u3002<\/p>\n<p><span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&#043;&#043;<\/span>index <span class=\"token operator\">&gt;&#061;<\/span> MAX_PORT<span class=\"token punctuation\">)<\/span> index <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/\u7aef\u53e3\u5faa\u73af&#xff08;8888-8987&#xff09;<\/span><\/p>\n<p>    <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">epoll_event<\/span> ev<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> sockfd <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span>connections <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">340000<\/span> <span class=\"token operator\">&amp;&amp;<\/span> <span class=\"token operator\">!<\/span>isContinue<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><br \/>\n    sockfd <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">socket<\/span><span class=\"token punctuation\">(<\/span>AF_INET<span class=\"token punctuation\">,<\/span>SOCK_STREAM<span class=\"token punctuation\">,<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        addr<span class=\"token punctuation\">.<\/span>sin_port <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">htons<\/span><span class=\"token punctuation\">(<\/span>port<span class=\"token operator\">&#043;<\/span>index<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token function\">connect<\/span><span class=\"token punctuation\">(<\/span>sockfd<span class=\"token punctuation\">,<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">sockaddr<\/span><span class=\"token operator\">*<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">&amp;<\/span>addr<span class=\"token punctuation\">,<\/span><span class=\"token keyword\">sizeof<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">sockaddr_in<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token function\">ntySetNonblock<\/span><span class=\"token punctuation\">(<\/span>sockfd<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/\u8bbe\u7f6e\u5f53\u524d\u5957\u63a5\u5b57\u975e\u963b\u585e<\/span><\/p>\n<p>        <span class=\"token function\">ntySetReUseAddr<\/span><span class=\"token punctuation\">(<\/span>sockfd<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/\u5730\u5740\u53ef\u91cd\u7528<\/span><\/p>\n<p>        <span class=\"token function\">sprintf<\/span><span class=\"token punctuation\">(<\/span>buffer<span class=\"token punctuation\">,<\/span><span class=\"token string\">&#034;Hello Server: client &#8211;&gt; %d\\\\n&#034;<\/span><span class=\"token punctuation\">,<\/span>connections<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token function\">send<\/span><span class=\"token punctuation\">(<\/span>sockfd<span class=\"token punctuation\">,<\/span>buffer<span class=\"token punctuation\">,<\/span><span class=\"token function\">strlen<\/span><span class=\"token punctuation\">(<\/span>buffer<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        ev<span class=\"token punctuation\">.<\/span>data<span class=\"token punctuation\">.<\/span>fd <span class=\"token operator\">&#061;<\/span> sockfd<span class=\"token punctuation\">;<\/span><br \/>\n        ev<span class=\"token punctuation\">.<\/span>events <span class=\"token operator\">&#061;<\/span> EPOLLIN <span class=\"token operator\">||<\/span> EPOLLOUT<span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/\u76d1\u542c\u8bfb\u5199<\/span><br \/>\n        <span class=\"token function\">epoll_ctl<\/span><span class=\"token punctuation\">(<\/span>epoll_fd<span class=\"token punctuation\">,<\/span>EPOLL_CTL_ADD<span class=\"token punctuation\">,<\/span>sockfd<span class=\"token punctuation\">,<\/span><span class=\"token operator\">&amp;<\/span>ev<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        connections<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n     <span class=\"token punctuation\">}<\/span><\/p>\n<p>\u200b \u6bcf\u5f53\u6210\u529f\u5efa\u7acb1000\u4e2a\u8fde\u63a5&#xff0c;\u6682\u505c\u5411\u670d\u52a1\u5668\u53d1\u9001\u8bf7\u6c42\u8f6c\u800c\u5904\u7406\u4e8b\u4ef6\u3002<\/p>\n<p><span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span>connections <span class=\"token operator\">%<\/span> <span class=\"token number\">1000<\/span> <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token number\">999<\/span> <span class=\"token operator\">||<\/span> connections <span class=\"token operator\">&gt;&#061;<\/span> <span class=\"token number\">34000<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">timeval<\/span> tv_cur<span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token function\">memcpy<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>tv_cur<span class=\"token punctuation\">,<\/span><span class=\"token operator\">&amp;<\/span>tv_begin<span class=\"token punctuation\">,<\/span><span class=\"token keyword\">sizeof<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">timeval<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>            <span class=\"token function\">gettimeofday<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>tv_begin<span class=\"token punctuation\">,<\/span><span class=\"token constant\">NULL<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>            <span class=\"token keyword\">int<\/span> time_used <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">TIME_SUB_MS<\/span><span class=\"token punctuation\">(<\/span>tv_begin<span class=\"token punctuation\">,<\/span>tv_cur<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token function\">printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;connections: %d, sockfd: %d, time_used:%d\\\\n&#034;<\/span><span class=\"token punctuation\">,<\/span>connections<span class=\"token punctuation\">,<\/span>sockfd<span class=\"token punctuation\">,<\/span>time_used<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>            <span class=\"token keyword\">int<\/span> nfds <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">epoll_wait<\/span><span class=\"token punctuation\">(<\/span>epoll_fd<span class=\"token punctuation\">,<\/span>events<span class=\"token punctuation\">,<\/span>connections<span class=\"token punctuation\">,<\/span><span class=\"token number\">100<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token keyword\">for<\/span><span class=\"token punctuation\">(<\/span>i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span>i <span class=\"token operator\">&lt;<\/span> nfds<span class=\"token punctuation\">;<\/span>i<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token keyword\">int<\/span> clientfd <span class=\"token operator\">&#061;<\/span> events<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">.<\/span>data<span class=\"token punctuation\">.<\/span>fd<span class=\"token punctuation\">;<\/span><\/p>\n<p>                <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span>events<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">.<\/span>events <span class=\"token operator\">&amp;<\/span> EPOLLOUT<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><br \/>\n                    <span class=\"token function\">sprintf<\/span><span class=\"token punctuation\">(<\/span>buffer<span class=\"token punctuation\">,<\/span><span class=\"token string\">&#034;data from %d\\\\n&#034;<\/span><span class=\"token punctuation\">,<\/span>clientfd<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                    <span class=\"token function\">send<\/span><span class=\"token punctuation\">(<\/span>sockfd<span class=\"token punctuation\">,<\/span>buffer<span class=\"token punctuation\">,<\/span><span class=\"token function\">strlen<\/span><span class=\"token punctuation\">(<\/span>buffer<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                <span class=\"token punctuation\">}<\/span><span class=\"token keyword\">else<\/span> <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span>events<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">.<\/span>events <span class=\"token operator\">&amp;<\/span> EPOLLIN<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><br \/>\n                    <span class=\"token keyword\">char<\/span> rBuffer<span class=\"token punctuation\">[<\/span>MAX_BUFFER<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                    <span class=\"token class-name\">ssize_t<\/span> length <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">recv<\/span><span class=\"token punctuation\">(<\/span>sockfd<span class=\"token punctuation\">,<\/span>rBuffer<span class=\"token punctuation\">,<\/span>MAX_BUFFER<span class=\"token punctuation\">,<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                    <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span>length <span class=\"token operator\">&gt;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><br \/>\n                        <span class=\"token function\">printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034; RecvBuffer:%s\\\\n&#034;<\/span><span class=\"token punctuation\">,<\/span>rBuffer<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>                        <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span><span class=\"token function\">strcmp<\/span><span class=\"token punctuation\">(<\/span>rBuffer<span class=\"token punctuation\">,<\/span><span class=\"token string\">&#034;quit&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><br \/>\n                            isContinue <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                        <span class=\"token punctuation\">}<\/span><br \/>\n                    <span class=\"token punctuation\">}<\/span><span class=\"token keyword\">else<\/span> <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span>length <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><br \/>\n                        <span class=\"token function\">printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034; Disconnect clientfd:%d\\\\n&#034;<\/span><span class=\"token punctuation\">,<\/span>clientfd<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                        <span class=\"token function\">epoll_ctl<\/span><span class=\"token punctuation\">(<\/span>epoll_fd<span class=\"token punctuation\">,<\/span>EPOLL_CTL_DEL<span class=\"token punctuation\">,<\/span>clientfd<span class=\"token punctuation\">,<\/span><span class=\"token constant\">NULL<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                        connections<span class=\"token operator\">&#8212;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                        <span class=\"token function\">close<\/span><span class=\"token punctuation\">(<\/span>clientfd<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                    <span class=\"token punctuation\">}<\/span><span class=\"token keyword\">else<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                        <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span>errno <span class=\"token operator\">&#061;&#061;<\/span> EINTR<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">continue<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>                        <span class=\"token function\">printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034; Error clientfd:%d, errno:%d\\\\n&#034;<\/span><span class=\"token punctuation\">,<\/span>clientfd<span class=\"token punctuation\">,<\/span>errno<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                        <span class=\"token function\">epoll_ctl<\/span><span class=\"token punctuation\">(<\/span>epoll_fd<span class=\"token punctuation\">,<\/span>EPOLL_CTL_DEL<span class=\"token punctuation\">,<\/span>clientfd<span class=\"token punctuation\">,<\/span><span class=\"token constant\">NULL<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                        <span class=\"token function\">close<\/span><span class=\"token punctuation\">(<\/span>clientfd<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                    <span class=\"token punctuation\">}<\/span><br \/>\n                <span class=\"token punctuation\">}<\/span><span class=\"token keyword\">else<\/span><span class=\"token punctuation\">{<\/span><br \/>\n                    <span class=\"token function\">printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034; clientfd:%d, errno:%d\\\\n&#034;<\/span><span class=\"token punctuation\">,<\/span>clientfd<span class=\"token punctuation\">,<\/span>errno<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                    <span class=\"token function\">epoll_ctl<\/span><span class=\"token punctuation\">(<\/span>epoll_fd<span class=\"token punctuation\">,<\/span>EPOLL_CTL_DEL<span class=\"token punctuation\">,<\/span>clientfd<span class=\"token punctuation\">,<\/span><span class=\"token constant\">NULL<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                    <span class=\"token function\">close<\/span><span class=\"token punctuation\">(<\/span>clientfd<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                <span class=\"token punctuation\">}<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token function\">usleep<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span> <span class=\"token operator\">*<\/span> <span class=\"token number\">1000<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>\u200b \u81f3\u6b64\u5ba2\u6237\u7aef\u4ee3\u7801\u529f\u80fd\u5b8c\u6210\u3002<\/p>\n<ul>\n<li>\u670d\u52a1\u5668\u7aef\u53ca\u53c2\u6570\u8c03\u6574<\/li>\n<\/ul>\n<p>\u200b \u5ba2\u6237\u7aef\u4f7f\u7528\u4e86100\u4e2a\u7aef\u53e3\u5411\u670d\u52a1\u5668\u53d1\u8d77\u8fde\u63a5&#xff0c;\u6240\u4ee5\u670d\u52a1\u5668\u9700\u8981\u540c\u65f6\u76d1\u542c100\u4e2a\u7aef\u53e3\u53f7\u3002<\/p>\n<p><span class=\"token keyword\">for<\/span><span class=\"token punctuation\">(<\/span>i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span>i <span class=\"token operator\">&lt;<\/span> MAX_PORT<span class=\"token punctuation\">;<\/span>i<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">sockaddr_in<\/span> addr<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">memset<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>addr<span class=\"token punctuation\">,<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span><span class=\"token keyword\">sizeof<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">sockaddr_in<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    addr<span class=\"token punctuation\">.<\/span>sin_family <span class=\"token operator\">&#061;<\/span> AF_INET<span class=\"token punctuation\">;<\/span><br \/>\n    addr<span class=\"token punctuation\">.<\/span>sin_port <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">htons<\/span><span class=\"token punctuation\">(<\/span>port<span class=\"token operator\">&#043;<\/span>i<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    addr<span class=\"token punctuation\">.<\/span>sin_addr<span class=\"token punctuation\">.<\/span>s_addr <span class=\"token operator\">&#061;<\/span> INADDR_ANY<span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/\u4ee4\u5730\u5740\u4e3a 0.0.0.0<\/span><\/p>\n<p>\u200b \u6b64\u65f6\u8fd8\u4ecd\u65e0\u6cd5\u505a\u5230\u767e\u4e07\u5e76\u53d1&#xff0c;\u56e0\u4e3a\u4e0e\u5ba2\u6237\u7aef\u5efa\u7acb\u7684\u6bcf\u4e00\u4e2asocket\u90fd\u662f\u4e00\u4e2a\u6587\u4ef6\u64cd\u4f5c\u7b26&#xff0c;\u800c\u5728Linux\u64cd\u4f5c\u7cfb\u7edf\u4e2d\u9650\u5236\u4e86\u6bcf\u4e2a\u8fdb\u7a0b\u7684\u6587\u4ef6\u64cd\u4f5c\u7b26\u6700\u5927\u6570\u91cf\u3002\u4f7f\u7528\u547d\u4ee4ulimit -a\u67e5\u770bopen files\u680f\u7684\u6700\u5927\u6587\u4ef6\u6253\u5f00\u6570\u91cf\u3002\u4fee\u6539\u7cfb\u7edf\u914d\u7f6e\u6587\u4ef6sudo vim \/etc\/security\/limits.conf&#xff0c;\u5728\u6587\u4ef6\u4e2d\u6dfb\u52a0\u6700\u540e\u4e24\u884c\u3002<\/p>\n<p>*               soft    nofile   1048576<br \/>\n*               hard    nofile   1048576<\/p>\n<p>\u200b *\u8868\u793a\u9002\u7528\u4e8e\u6240\u6709\u7528\u6237&#xff0c;soft\u3001hard\u90fd\u5c06\u6587\u4ef6\u6253\u5f00\u6570\u91cf\u9650\u5236\u4e3a1048576&#xff0c;\u5b8c\u5168\u53ef\u4ee5\u505a\u5230\u767e\u4e07\u5e76\u53d1\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/07\/20250729223648-68894d00b0085.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p>\u200b \u7136\u800c\u5c31\u7b97\u8c03\u6574\u4e86\u4e0a\u8ff0\u53c2\u6570&#xff0c;\u4ecd\u7136\u4f1a\u53d7\u5230\u5185\u6838\u53c2\u6570\u7684\u9650\u5b9a&#xff0c;\u5bfc\u81f4\u5ba2\u6237\u7aef\u65e0\u6cd5\u4e0e\u670d\u52a1\u5668\u5efa\u7acb\u8fde\u63a5\u51fa\u73b0\u8fde\u63a5\u8d85\u65f6\u73b0\u8c61\u3002\/proc\/sys\/fs\/file-max\u5c06\u6700\u5927\u6587\u4ef6\u6253\u5f00\u6570\u91cf\u4fee\u6539\u4e3a1048576\u3002\u7136\u800c\u5bf9\u4e8e\u6bcf\u4e2a\u8fde\u63a5Linux\u5185\u6838\u5bf9\u5e94\u5efa\u7acb\u4e86\u8fde\u63a5\u8ddf\u8e2a\u8868&#xff0c;\u7528\u4e8e\u8bb0\u5f55\u6bcf\u4e2a\u7f51\u7edc\u8fde\u63a5\u7684\u72b6\u6001&#xff0c;\u56e0\u6b64\u8be5\u53c2\u6570\u503c\u4ecd\u7136\u4f1a\u5f71\u54cd\u5e76\u53d1\u7684\u8fde\u63a5\u6570\u91cf\u3002sudo vim \/etc\/sysctl.conf\u4fee\u6539\u914d\u7f6e\u6587\u4ef6sysctl -p\u5e94\u7528\u914d\u7f6e&#xff0c;sudo modprobe ip_conntrack\u52a0\u8f7d\u8fde\u63a5\u8ddf\u8e2a\u5185\u6838\u6a21\u5757\u3002<\/p>\n<table>\n<tr>\u53c2\u6570\u4f5c\u7528\u5bf9\u8c61\u5178\u578b\u573a\u666f<\/tr>\n<tbody>\n<tr>\n<td>nf_conntrack_max<\/td>\n<td>\u5185\u6838\u8fde\u63a5\u8ddf\u8e2a\u8868<\/td>\n<td>NAT\u3001\u9632\u706b\u5899\u3001\u9ad8\u5e76\u53d1 TCP \u8fde\u63a5<\/td>\n<\/tr>\n<tr>\n<td>fs.file-max<\/td>\n<td>\u7cfb\u7edf\u6587\u4ef6\u63cf\u8ff0\u7b26\u603b\u6570<\/td>\n<td>\u5168\u5c40 I\/O \u8d44\u6e90\u63a7\u5236<\/td>\n<\/tr>\n<tr>\n<td>ulimit -n<\/td>\n<td>\u7528\u6237\/\u8fdb\u7a0b\u6587\u4ef6\u63cf\u8ff0\u7b26\u6570<\/td>\n<td>\u5355\u8fdb\u7a0b\u5e76\u53d1\u8fde\u63a5\u9650\u5236<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u200b \u540c\u65f6\u914d\u7f6e\u5176\u4f59\u76f8\u5173\u53c2\u6570&#xff1a;net.ipv4.tcp_mem\u63a7\u5236TCP\u534f\u8bae\u6808\u7684\u5185\u5b58\u4f7f\u7528&#xff0c;\u5176\u4e09\u4e2a\u503c\u5206\u522b\u8868\u793a\u6700\u5c0f\u503c\u3001\u538b\u529b\u503c\u3001\u6700\u5927\u503c\u3002\u5728\u4f4e\u4e8e\u6700\u5c0f\u503c\u65f6TCP\u81ea\u7531\u5206\u914d\u5185\u5b58&#xff1b;\u5230\u8fbe\u538b\u529b\u503c\u65f6\u8c03\u6574\u53d1\u9001\u901f\u7387&#xff1b;\u8d85\u8fc7\u6700\u5927\u503c\u5219\u62d2\u7edd\u5206\u914d\u5185\u5b58\u3002net.ipv4.tcp_wmem\u63a7\u5236\u53d1\u9001\u7f13\u51b2\u533a\u5927\u5c0f&#xff0c;\u7528\u4e8e\u9002\u914d\u4e0d\u540c\u7f51\u7edc\u6761\u4ef6\u4e0b\u7684TCP\u53d1\u9001\u7f13\u51b2\u533a\u3002net.ipv4.tcp_rmem\u540c\u7406\u63a7\u5236\u4e0d\u540c\u7f51\u7edc\u6761\u4ef6\u4e0bTCP\u63a5\u6536\u7f13\u51b2\u533a &#xff0c;\u4e09\u4e2a\u503c\u5206\u522b\u662f\u6700\u5c0f\u503c\u3001\u9ed8\u8ba4\u503c\u3001\u6700\u5927\u503c\u3002<\/p>\n<p>\u200b \u57fa\u4e8e\u4ee5\u4e0a\u914d\u7f6e\u6bcf\u4e2asocket\u90fd\u81f3\u5c11\u5360\u75282k\u5185\u5b58&#xff0c;\u914d\u5408\u7740\u5185\u5b58\u5206\u914d\u8c03\u4f18\u8fbe\u5230\u6700\u7406\u60f3\u72b6\u6001\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/07\/20250729223648-68894d00c193b.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p>\u200b \u6700\u540e\u6d4b\u8bd5\u5f97\u5230\u767e\u4e07\u8fde\u63a5\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/07\/20250729223648-68894d00cc8cc.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h3>\u95ee\u9898\u4e0e\u89e3\u51b3\u65b9\u6848<\/h3>\n<h4>\u95ee\u9898\u4e00&#xff1a;\u540c\u6837\u662f\u7528\u4e8e\u5904\u7406\u5e76\u53d1\u7684select&#xff0c;\u5b83\u4e0eepoll\u6709\u4ec0\u4e48\u4e0d\u540c&#xff0c;\u5404\u6709\u4ec0\u4e48\u4f7f\u7528\u573a\u666f&#xff1f;<\/h4>\n<p>\u200b select \u548c epoll \u90fd\u662f Linux \u7cfb\u7edf\u4e2d\u7528\u4e8e\u5b9e\u73b0 I\/O \u591a\u8def\u590d\u7528(I\/O Multiplexing) \u7684\u673a\u5236&#xff0c;\u4f46\u4ed6\u4eec\u7684\u539f\u7406\u548c\u6027\u80fd\u90fd\u6709\u5dee\u5f02\u3002<\/p>\n<table>\n<tr>\u7279\u6027selectepoll<\/tr>\n<tbody>\n<tr>\n<td>\u5b9e\u73b0\u673a\u5236<\/td>\n<td>\u8f6e\u8be2\u6240\u6709\u6ce8\u518c\u7684 FD<\/td>\n<td>\u4e8b\u4ef6\u9a71\u52a8&#xff0c;\u4ec5\u901a\u77e5\u6d3b\u8dc3\u7684 FD<\/td>\n<\/tr>\n<tr>\n<td>\u65f6\u95f4\u590d\u6742\u5ea6<\/td>\n<td>O(n)&#xff08;\u9700\u904d\u5386\u6240\u6709 FD&#xff09;<\/td>\n<td>O(1)&#xff08;\u76f4\u63a5\u8fd4\u56de\u6d3b\u8dc3\u4e8b\u4ef6\u5217\u8868&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>\u6700\u5927 FD \u6570\u91cf<\/td>\n<td>\u901a\u5e38\u53d7 FD_SETSIZE \u9650\u5236&#xff08;\u9ed8\u8ba4 1024&#xff09;<\/td>\n<td>\u4ec5\u53d7\u7cfb\u7edf\u8d44\u6e90\u9650\u5236&#xff08;\u53ef\u8fbe\u6570\u5341\u4e07&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>\u6570\u636e\u62f7\u8d1d<\/td>\n<td>\u6bcf\u6b21\u8c03\u7528\u9700\u62f7\u8d1d FD \u96c6\u5408\u5230\u5185\u6838\u6001<\/td>\n<td>\u901a\u8fc7\u5171\u4eab\u5185\u5b58\u907f\u514d\u62f7\u8d1d<\/td>\n<\/tr>\n<tr>\n<td>\u89e6\u53d1\u65b9\u5f0f<\/td>\n<td>\u4ec5\u652f\u6301\u6c34\u5e73\u89e6\u53d1&#xff08;LT&#xff09;<\/td>\n<td>\u652f\u6301\u6c34\u5e73\u89e6\u53d1&#xff08;LT&#xff09;\u548c\u8fb9\u7f18\u89e6\u53d1&#xff08;ET&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>\u5185\u6838\u7248\u672c<\/td>\n<td>\u8de8\u5e73\u53f0&#xff08;POSIX \u6807\u51c6&#xff09;<\/td>\n<td>Linux \u7279\u6709&#xff08;2.6&#043; \u5185\u6838&#xff09;<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u200b \u56e0\u4e3aselect\u53ef\u517c\u5bb9\u591a\u5e73\u53f0\u5c1d\u5e94\u7528\u4e8e\u7b80\u5355\u8de8\u5e73\u53f0\u5f00\u53d1&#xff0c;\u4e14\u9002\u7528\u4e8e\u5c11\u91cf\u8fde\u63a5&#xff1b;epoll\u5e38\u7528\u4e8e\u9ad8\u5e76\u53d1\u670d\u52a1\u5668&#xff1a;Nginx\u3001Redis\u7b49&#xff0c;\u90fd\u662f\u6570\u4e07\u5e76\u53d1\u7684\u8fde\u63a5\u573a\u666f&#xff0c;\u57fa\u4e8eLinux\u5e73\u53f0\u7684\u4e13\u5c5e\u4f18\u5316\u3002<\/p>\n<h4>\u95ee\u9898\u4e8c&#xff1a;\u5e38\u6709\u6587\u4ef6\u64cd\u4f5c\u7b26\u6709\u54ea\u4e9b\u7c7b\u578b&#xff0c;\u5de5\u4f5c\u539f\u7406\u662f\u4ec0\u4e48&#xff1f;<\/h4>\n<table>\n<tr>\u7c7b\u578b\u63cf\u8ff0\u7528\u9014\u5de5\u4f5c\u539f\u7406\u5178\u578b\u7cfb\u7edf\u8c03\u7528\/\u51fd\u6570\u7279\u70b9<\/tr>\n<tbody>\n<tr>\n<td>\u6807\u51c6\u6d41<\/td>\n<td>\u9884\u5b9a\u4e49\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26&#xff08;0,1,2&#xff09;<\/td>\n<td>\u7ec8\u7aef\u8f93\u5165\/\u8f93\u51fa\/\u9519\u8bef<\/td>\n<td>\u64cd\u4f5c\u7cfb\u7edf\u5185\u6838\u7ef4\u62a4\u7684\u7f13\u51b2\u533a&#xff0c;\u4e0e\u7ec8\u7aef\u8bbe\u5907\u5173\u8054<\/td>\n<td>stdin, stdout, stderr<\/td>\n<td>\u5168\u5c40\u552f\u4e00&#xff0c;\u4e0d\u53ef\u5173\u95ed<\/td>\n<\/tr>\n<tr>\n<td>\u5e38\u89c4\u6587\u4ef6<\/td>\n<td>\u78c1\u76d8\u4e0a\u7684\u6301\u4e45\u5316\u6570\u636e\u6587\u4ef6<\/td>\n<td>\u8bfb\u5199\u5b58\u50a8\u8bbe\u5907\u4e0a\u7684\u6570\u636e<\/td>\n<td>\u901a\u8fc7\u6587\u4ef6\u7cfb\u7edf\u5143\u6570\u636e\u5b9a\u4f4d\u6570\u636e\u5757&#xff0c;\u652f\u6301\u968f\u673a\u8bbf\u95ee<\/td>\n<td>open(), read(), write()<\/td>\n<td>\u652f\u6301O_DIRECT\u7ed5\u8fc7\u7f13\u5b58<\/td>\n<\/tr>\n<tr>\n<td>\u7ba1\u9053&#xff08;Pipe&#xff09;<\/td>\n<td>\u533f\u540d\u8fdb\u7a0b\u95f4\u901a\u4fe1\u901a\u9053<\/td>\n<td>\u7236\u5b50\u8fdb\u7a0b\/\u7ebf\u7a0b\u95f4\u5355\u5411\u6570\u636e\u4f20\u8f93<\/td>\n<td>\u5185\u6838\u7ef4\u62a4\u73af\u5f62\u7f13\u51b2\u533a&#xff0c;\u5199\u6ee1\u540e\u963b\u585e\u5199\u5165\u8005<\/td>\n<td>pipe(), read(), write()<\/td>\n<td>\u534a\u53cc\u5de5&#xff0c;FIFO\u7279\u6027<\/td>\n<\/tr>\n<tr>\n<td>\u547d\u540d\u7ba1\u9053&#xff08;FIFO&#xff09;<\/td>\n<td>\u7279\u6b8a\u6587\u4ef6\u7cfb\u7edf\u4e2d\u7684\u6301\u4e45\u5316\u7ba1\u9053<\/td>\n<td>\u65e0\u4eb2\u7f18\u5173\u7cfb\u8fdb\u7a0b\u95f4\u901a\u4fe1<\/td>\n<td>\u540c\u533f\u540d\u7ba1\u9053&#xff0c;\u4f46\u901a\u8fc7\u6587\u4ef6\u7cfb\u7edf\u8def\u5f84\u8bbf\u95ee<\/td>\n<td>mkfifo(), open()<\/td>\n<td>\u5168\u53cc\u5de5\u9700\u4e24\u4e2a\u5355\u5411\u7ba1\u9053<\/td>\n<\/tr>\n<tr>\n<td>\u5957\u63a5\u5b57&#xff08;Socket&#xff09;<\/td>\n<td>\u7f51\u7edc\u901a\u4fe1\u7aef\u70b9<\/td>\n<td>\u8de8\u4e3b\u673a\u8fdb\u7a0b\u95f4\u901a\u4fe1<\/td>\n<td>\u56db\u5c42\u7f51\u7edc\u534f\u8bae\u5c01\u88c5&#xff08;TCP\/UDP&#xff09;&#xff0c;\u901a\u8fc7\u7aef\u53e3&#043;IP\u6807\u8bc6&#xff0c;\u5185\u6838\u7ef4\u62a4\u8fde\u63a5\u72b6\u6001\u8868<\/td>\n<td>socket(), bind(), connect()<\/td>\n<td>\u652f\u6301SOCK_STREAM&#xff08;TCP&#xff09;\u548cSOCK_DGRAM&#xff08;UDP&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>\u5b57\u7b26\u8bbe\u5907<\/td>\n<td>\u6309\u5b57\u7b26\u6d41\u8bbf\u95ee\u7684\u786c\u4ef6\u8bbe\u5907<\/td>\n<td>\u4e32\u53e3\/\u7ec8\u7aef\/\u865a\u62df\u8bbe\u5907&#xff08;\u5982\/dev\/null&#xff09;<\/td>\n<td>\u76f4\u63a5\u64cd\u4f5c\u786c\u4ef6\u5bc4\u5b58\u5668&#xff0c;\u65e0\u7f13\u51b2\u533a<\/td>\n<td>open(), ioctl()<\/td>\n<td>\u7279\u6b8a\u8bbe\u5907\u9700\u9a71\u52a8\u652f\u6301<\/td>\n<\/tr>\n<tr>\n<td>\u5185\u5b58\u6587\u4ef6<\/td>\n<td>\u5185\u5b58\u6620\u5c04\u7684\u4f2a\u6587\u4ef6<\/td>\n<td>\u9ad8\u901f\u4e34\u65f6\u6570\u636e\u5b58\u50a8<\/td>\n<td>\u901a\u8fc7mmap()\u5c06\u6587\u4ef6\u6216\u533f\u540d\u5185\u5b58\u6620\u5c04\u5230\u8fdb\u7a0b\u5730\u5740\u7a7a\u95f4<\/td>\n<td>fmemopen(), open_memstream()<\/td>\n<td>\u6570\u636e\u5728RAM\u4e2d&#xff0c;\u975e\u6301\u4e45\u5316<\/td>\n<\/tr>\n<tr>\n<td>\u4e8b\u4ef6\u6d41&#xff08;Event&#xff09;<\/td>\n<td>\u5f02\u6b65\u4e8b\u4ef6\u901a\u77e5\u63a5\u53e3<\/td>\n<td>\u9ad8\u5e76\u53d1I\/O\u591a\u8def\u590d\u7528<\/td>\n<td>\u5185\u6838\u7ef4\u62a4\u4e8b\u4ef6\u5c31\u7eea\u5217\u8868&#xff0c;\u901a\u8fc7\u56de\u8c03\u6216\u8f6e\u8be2\u8fd4\u56de\u5c31\u7eea\u4e8b\u4ef6&#xff08;\u5982epoll\u7684\u7ea2\u9ed1\u6811&#043;\u5c31\u7eea\u94fe\u8868&#xff09;<\/td>\n<td>epoll_ctl(), kqueue()<\/td>\n<td>\u8fb9\u7f18\u89e6\u53d1&#xff08;ET&#xff09;\u9700\u4e00\u6b21\u6027\u5904\u7406\u6240\u6709\u6570\u636e<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>\u603b\u7ed3<\/h3>\n<p>\u200b \u672c\u6587\u8be6\u7ec6\u4ecb\u7ecd\u4e86C\u8bed\u8a00\u5b9e\u73b0TCP\u670d\u52a1\u5668\u4ece\u5355\u7ebf\u7a0b\u5904\u7406\u5230\u767e\u4e07\u7ea7\u5e76\u53d1\u8fde\u63a5\u7684\u6f14\u8fdb\u8fc7\u7a0b\u3002\u9996\u5148\u901a\u8fc7\u4e00\u8bf7\u6c42\u4e00\u7ebf\u7a0b\u7684\u7b80\u5355\u6a21\u578b&#xff0c;\u7136\u540e\u5f15\u5165epoll\u591a\u8def\u590d\u7528\u6280\u672f\u63d0\u5347\u6027\u80fd&#xff0c;\u6700\u540e\u901a\u8fc7\u8c03\u6574Linux\u5185\u6838\u53c2\u6570&#xff08;\u6587\u4ef6\u63cf\u8ff0\u7b26\u9650\u5236\u3001TCP\u5185\u5b58\u7ba1\u7406\u7b49&#xff09;\u548c\u4f18\u5316\u5ba2\u6237\u7aef\u8fde\u63a5\u7b56\u7565&#xff08;\u591a\u7aef\u53e3\u8f6e\u8be2&#xff09;\u5b9e\u73b0\u4e86\u767e\u4e07\u5e76\u53d1\u8fde\u63a5\u3002\u6587\u7ae0\u8fd8\u5bf9\u6bd4\u4e86select\u548cepoll\u7684\u5dee\u5f02&#xff0c;\u5e76\u7cfb\u7edf\u68b3\u7406\u4e86\u5404\u7c7b\u6587\u4ef6\u63cf\u8ff0\u7b26\u7684\u5de5\u4f5c\u539f\u7406&#xff0c;\u4e3a\u6784\u5efa\u9ad8\u6027\u80fd\u670d\u52a1\u5668\u63d0\u4f9b\u4e86\u5168\u9762\u7684\u6280\u672f\u65b9\u6848\u548c\u4f18\u5316\u601d\u8def\u3002<\/p>\n<p>\u4ee3\u7801\u89c1&#xff1a;https:\/\/github.com\/208822032\/server-client \u76f8\u5173\u94fe\u63a5&#xff1a;https:\/\/github.com\/0voice<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb752\u6b21\uff0c\u70b9\u8d5e21\u6b21\uff0c\u6536\u85cf18\u6b21\u3002\u672c\u6587\u4ecb\u7ecd\u4e86C\u8bed\u8a00\u5b9e\u73b0\u7684TCP\u670d\u52a1\u5668\u4ece\u5355\u7ebf\u7a0b\u5230\u767e\u4e07\u5e76\u53d1\u7684\u6f14\u8fdb\u8fc7\u7a0b\u3002\u9996\u5148\u5206\u6790\u4e86\u4f20\u7edf\u7684\u4e00\u8bf7\u6c42\u4e00\u7ebf\u7a0b\u6a21\u5f0f\uff0c\u901a\u8fc7\u4e3a\u6bcf\u4e2a\u5ba2\u6237\u7aef\u8fde\u63a5\u521b\u5efa\u72ec\u7acb\u7ebf\u7a0b\u5904\u7406\u8bf7\u6c42\uff1b\u968f\u540e\u5f15\u5165epoll I\/O\u590d\u7528\u6280\u672f\uff0c\u91c7\u7528\u8fb9\u7f18\u89e6\u53d1\u6216\u6c34\u5e73\u89e6\u53d1\u6a21\u5f0f\u9ad8\u6548\u7ba1\u7406\u591a\u4e2a\u8fde\u63a5\uff1b\u6700\u540e\u901a\u8fc7\u591a\u865a\u62df\u673a\u6d4b\u8bd5\u73af\u5883\uff0c\u8c03\u6574\u7cfb\u7edf\u53c2\u6570\u548c\u7f51\u7edc\u914d\u7f6e\uff0c\u5b9e\u73b0\u670d\u52a1\u5668\u767e\u4e07\u7ea7\u5e76\u53d1\u8fde\u63a5\u3002_\u8bbe\u8ba1\u652f\u6301\u767e\u4e07\u5e76\u53d1\u7684tcp\u670d\u52a1\u7aef\u67b6\u6784<\/p>\n","protected":false},"author":2,"featured_media":47151,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[230,205,43,1053],"topic":[],"class_list":["post-47157","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-php","tag-tcp-ip","tag-43","tag-1053"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>TCP\u670d\u52a1\u5668\uff1a\u4ece\u4e00\u8bf7\u6c42\u4e00\u7ebf\u7a0b\u5230\u767e\u4e07\u5e76\u53d1 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/47157.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"TCP\u670d\u52a1\u5668\uff1a\u4ece\u4e00\u8bf7\u6c42\u4e00\u7ebf\u7a0b\u5230\u767e\u4e07\u5e76\u53d1 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb752\u6b21\uff0c\u70b9\u8d5e21\u6b21\uff0c\u6536\u85cf18\u6b21\u3002\u672c\u6587\u4ecb\u7ecd\u4e86C\u8bed\u8a00\u5b9e\u73b0\u7684TCP\u670d\u52a1\u5668\u4ece\u5355\u7ebf\u7a0b\u5230\u767e\u4e07\u5e76\u53d1\u7684\u6f14\u8fdb\u8fc7\u7a0b\u3002\u9996\u5148\u5206\u6790\u4e86\u4f20\u7edf\u7684\u4e00\u8bf7\u6c42\u4e00\u7ebf\u7a0b\u6a21\u5f0f\uff0c\u901a\u8fc7\u4e3a\u6bcf\u4e2a\u5ba2\u6237\u7aef\u8fde\u63a5\u521b\u5efa\u72ec\u7acb\u7ebf\u7a0b\u5904\u7406\u8bf7\u6c42\uff1b\u968f\u540e\u5f15\u5165epoll I\/O\u590d\u7528\u6280\u672f\uff0c\u91c7\u7528\u8fb9\u7f18\u89e6\u53d1\u6216\u6c34\u5e73\u89e6\u53d1\u6a21\u5f0f\u9ad8\u6548\u7ba1\u7406\u591a\u4e2a\u8fde\u63a5\uff1b\u6700\u540e\u901a\u8fc7\u591a\u865a\u62df\u673a\u6d4b\u8bd5\u73af\u5883\uff0c\u8c03\u6574\u7cfb\u7edf\u53c2\u6570\u548c\u7f51\u7edc\u914d\u7f6e\uff0c\u5b9e\u73b0\u670d\u52a1\u5668\u767e\u4e07\u7ea7\u5e76\u53d1\u8fde\u63a5\u3002_\u8bbe\u8ba1\u652f\u6301\u767e\u4e07\u5e76\u53d1\u7684tcp\u670d\u52a1\u7aef\u67b6\u6784\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wsisp.com\/helps\/47157.html\" \/>\n<meta property=\"og:site_name\" content=\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"article:published_time\" content=\"2025-07-29T22:36:51+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/07\/20250729223646-68894cfeda736.png\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"6 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/47157.html\",\"url\":\"https:\/\/www.wsisp.com\/helps\/47157.html\",\"name\":\"TCP\u670d\u52a1\u5668\uff1a\u4ece\u4e00\u8bf7\u6c42\u4e00\u7ebf\u7a0b\u5230\u767e\u4e07\u5e76\u53d1 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\",\"isPartOf\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/#website\"},\"datePublished\":\"2025-07-29T22:36:51+00:00\",\"dateModified\":\"2025-07-29T22:36:51+00:00\",\"author\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41\"},\"breadcrumb\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/47157.html#breadcrumb\"},\"inLanguage\":\"zh-Hans\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.wsisp.com\/helps\/47157.html\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/47157.html#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u9996\u9875\",\"item\":\"https:\/\/www.wsisp.com\/helps\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"TCP\u670d\u52a1\u5668\uff1a\u4ece\u4e00\u8bf7\u6c42\u4e00\u7ebf\u7a0b\u5230\u767e\u4e07\u5e76\u53d1\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#website\",\"url\":\"https:\/\/www.wsisp.com\/helps\/\",\"name\":\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\",\"description\":\"\u9999\u6e2f\u670d\u52a1\u5668_\u9999\u6e2f\u4e91\u670d\u52a1\u5668\u8d44\u8baf_\u670d\u52a1\u5668\u5e2e\u52a9\u6587\u6863_\u670d\u52a1\u5668\u6559\u7a0b\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.wsisp.com\/helps\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"zh-Hans\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41\",\"name\":\"admin\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"zh-Hans\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery\",\"contentUrl\":\"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery\",\"caption\":\"admin\"},\"sameAs\":[\"http:\/\/wp.wsisp.com\"],\"url\":\"https:\/\/www.wsisp.com\/helps\/author\/admin\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"TCP\u670d\u52a1\u5668\uff1a\u4ece\u4e00\u8bf7\u6c42\u4e00\u7ebf\u7a0b\u5230\u767e\u4e07\u5e76\u53d1 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.wsisp.com\/helps\/47157.html","og_locale":"zh_CN","og_type":"article","og_title":"TCP\u670d\u52a1\u5668\uff1a\u4ece\u4e00\u8bf7\u6c42\u4e00\u7ebf\u7a0b\u5230\u767e\u4e07\u5e76\u53d1 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","og_description":"\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb752\u6b21\uff0c\u70b9\u8d5e21\u6b21\uff0c\u6536\u85cf18\u6b21\u3002\u672c\u6587\u4ecb\u7ecd\u4e86C\u8bed\u8a00\u5b9e\u73b0\u7684TCP\u670d\u52a1\u5668\u4ece\u5355\u7ebf\u7a0b\u5230\u767e\u4e07\u5e76\u53d1\u7684\u6f14\u8fdb\u8fc7\u7a0b\u3002\u9996\u5148\u5206\u6790\u4e86\u4f20\u7edf\u7684\u4e00\u8bf7\u6c42\u4e00\u7ebf\u7a0b\u6a21\u5f0f\uff0c\u901a\u8fc7\u4e3a\u6bcf\u4e2a\u5ba2\u6237\u7aef\u8fde\u63a5\u521b\u5efa\u72ec\u7acb\u7ebf\u7a0b\u5904\u7406\u8bf7\u6c42\uff1b\u968f\u540e\u5f15\u5165epoll I\/O\u590d\u7528\u6280\u672f\uff0c\u91c7\u7528\u8fb9\u7f18\u89e6\u53d1\u6216\u6c34\u5e73\u89e6\u53d1\u6a21\u5f0f\u9ad8\u6548\u7ba1\u7406\u591a\u4e2a\u8fde\u63a5\uff1b\u6700\u540e\u901a\u8fc7\u591a\u865a\u62df\u673a\u6d4b\u8bd5\u73af\u5883\uff0c\u8c03\u6574\u7cfb\u7edf\u53c2\u6570\u548c\u7f51\u7edc\u914d\u7f6e\uff0c\u5b9e\u73b0\u670d\u52a1\u5668\u767e\u4e07\u7ea7\u5e76\u53d1\u8fde\u63a5\u3002_\u8bbe\u8ba1\u652f\u6301\u767e\u4e07\u5e76\u53d1\u7684tcp\u670d\u52a1\u7aef\u67b6\u6784","og_url":"https:\/\/www.wsisp.com\/helps\/47157.html","og_site_name":"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","article_published_time":"2025-07-29T22:36:51+00:00","og_image":[{"url":"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/07\/20250729223646-68894cfeda736.png"}],"author":"admin","twitter_card":"summary_large_image","twitter_misc":{"\u4f5c\u8005":"admin","\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4":"6 \u5206"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.wsisp.com\/helps\/47157.html","url":"https:\/\/www.wsisp.com\/helps\/47157.html","name":"TCP\u670d\u52a1\u5668\uff1a\u4ece\u4e00\u8bf7\u6c42\u4e00\u7ebf\u7a0b\u5230\u767e\u4e07\u5e76\u53d1 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","isPartOf":{"@id":"https:\/\/www.wsisp.com\/helps\/#website"},"datePublished":"2025-07-29T22:36:51+00:00","dateModified":"2025-07-29T22:36:51+00:00","author":{"@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41"},"breadcrumb":{"@id":"https:\/\/www.wsisp.com\/helps\/47157.html#breadcrumb"},"inLanguage":"zh-Hans","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.wsisp.com\/helps\/47157.html"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.wsisp.com\/helps\/47157.html#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"\u9996\u9875","item":"https:\/\/www.wsisp.com\/helps"},{"@type":"ListItem","position":2,"name":"TCP\u670d\u52a1\u5668\uff1a\u4ece\u4e00\u8bf7\u6c42\u4e00\u7ebf\u7a0b\u5230\u767e\u4e07\u5e76\u53d1"}]},{"@type":"WebSite","@id":"https:\/\/www.wsisp.com\/helps\/#website","url":"https:\/\/www.wsisp.com\/helps\/","name":"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","description":"\u9999\u6e2f\u670d\u52a1\u5668_\u9999\u6e2f\u4e91\u670d\u52a1\u5668\u8d44\u8baf_\u670d\u52a1\u5668\u5e2e\u52a9\u6587\u6863_\u670d\u52a1\u5668\u6559\u7a0b","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.wsisp.com\/helps\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"zh-Hans"},{"@type":"Person","@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41","name":"admin","image":{"@type":"ImageObject","inLanguage":"zh-Hans","@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/image\/","url":"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery","contentUrl":"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery","caption":"admin"},"sameAs":["http:\/\/wp.wsisp.com"],"url":"https:\/\/www.wsisp.com\/helps\/author\/admin"}]}},"_links":{"self":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts\/47157","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/comments?post=47157"}],"version-history":[{"count":0,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts\/47157\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/media\/47151"}],"wp:attachment":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/media?parent=47157"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/categories?post=47157"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/tags?post=47157"},{"taxonomy":"topic","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/topic?post=47157"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}