{"id":26907,"date":"2025-04-19T17:36:33","date_gmt":"2025-04-19T09:36:33","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/26907.html"},"modified":"2025-04-19T17:36:33","modified_gmt":"2025-04-19T09:36:33","slug":"%e7%ac%ac%e5%9b%9b%e7%ab%a0-linux%e5%a5%97%e6%8e%a5%e5%ad%97%e9%80%9a%e4%bf%a1%ef%bc%9a4-%e6%9c%8d%e5%8a%a1%e5%99%a8%e5%b9%b6%e5%8f%91","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/26907.html","title":{"rendered":"\u7b2c\u56db\u7ae0 Linux\u5957\u63a5\u5b57\u901a\u4fe1\uff1a4.\u670d\u52a1\u5668\u5e76\u53d1"},"content":{"rendered":"<h3>1. \u5355\u7ebf\u7a0b\/\u8fdb\u7a0b<\/h3>\n<p>\u8f6c\u8f7d\u81ea\u00a0\u670d\u52a1\u5668\u5e76\u53d1 | \u7231\u7f16\u7a0b\u7684\u5927\u4e19<\/p>\n<p>\u5728TCP\u901a\u4fe1\u8fc7\u7a0b\u4e2d&#xff0c;\u670d\u52a1\u5668\u7aef\u542f\u52a8\u4e4b\u540e\u53ef\u4ee5\u540c\u65f6\u548c\u591a\u4e2a\u5ba2\u6237\u7aef\u5efa\u7acb\u8fde\u63a5&#xff0c;\u5e76\u8fdb\u884c\u7f51\u7edc\u901a\u4fe1&#xff0c;\u4f46\u662f\u5728\u4ecb\u7ecdTCP\u901a\u4fe1\u6d41\u7a0b\u7684\u65f6\u5019&#xff0c;\u63d0\u4f9b\u7684\u670d\u52a1\u5668\u4ee3\u7801\u5374\u4e0d\u80fd\u5b8c\u6210\u8fd9\u6837\u7684\u9700\u6c42<\/p>\n<ul>\n<li>accept()&#xff1a;\u5982\u679c\u670d\u52a1\u5668\u7aef\u6ca1\u6709\u65b0\u5ba2\u6237\u7aef\u8fde\u63a5&#xff0c;\u963b\u585e\u5f53\u524d\u8fdb\u7a0b\/\u7ebf\u7a0b&#xff0c;\u5982\u679c\u68c0\u6d4b\u5230\u65b0\u8fde\u63a5\u89e3\u9664\u963b\u585e&#xff0c;\u5efa\u7acb\u8fde\u63a5<\/li>\n<li>read()&#xff1a;\u5982\u679c\u901a\u4fe1\u7684\u5957\u63a5\u5b57\u5bf9\u5e94\u7684\u8bfb\u7f13\u51b2\u533a\u6ca1\u6709\u6570\u636e&#xff0c;\u963b\u585e\u5f53\u524d\u8fdb\u7a0b\/\u7ebf\u7a0b&#xff0c;\u68c0\u6d4b\u5230\u6570\u636e\u89e3\u9664\u963b\u585e&#xff0c;\u63a5\u6536\u6570\u636e<\/li>\n<li>write()&#xff1a;\u5982\u679c\u901a\u4fe1\u7684\u5957\u63a5\u5b57\u5199\u7f13\u51b2\u533a\u88ab\u5199\u6ee1\u4e86&#xff0c;\u963b\u585e\u5f53\u524d\u8fdb\u7a0b\/\u7ebf\u7a0b&#xff08;\u8fd9\u79cd\u60c5\u51b5\u6bd4\u8f83\u5c11\u89c1&#xff09;<\/li>\n<\/ul>\n<p>\u5982\u679c\u9700\u8981\u548c\u53d1\u8d77\u65b0\u7684\u8fde\u63a5\u8bf7\u6c42\u7684\u5ba2\u6237\u7aef\u5efa\u7acb\u8fde\u63a5&#xff0c;\u90a3\u4e48\u5c31\u5fc5\u987b\u5728\u670d\u52a1\u5668\u7aef\u901a\u8fc7\u4e00\u4e2a\u5faa\u73af\u8c03\u7528accept()\u51fd\u6570&#xff0c;\u53e6\u5916\u5df2\u7ecf\u548c\u670d\u52a1\u5668\u5efa\u7acb\u8fde\u63a5\u7684\u5ba2\u6237\u7aef\u9700\u8981\u548c\u670d\u52a1\u5668\u901a\u4fe1&#xff0c;\u53d1\u9001\u6570\u636e\u65f6\u7684\u963b\u585e\u53ef\u4ee5\u5ffd\u7565&#xff0c;\u5f53\u63a5\u6536\u4e0d\u5230\u6570\u636e\u65f6\u7a0b\u5e8f\u4e5f\u4f1a\u88ab\u963b\u585e&#xff0c;\u8fd9\u65f6\u5019\u5c31\u4f1a\u975e\u5e38\u77db\u76fe&#xff0c;\u88abaccept()\u963b\u585e\u5c31\u65e0\u6cd5\u901a\u4fe1&#xff0c;\u88abread()\u963b\u585e\u5c31\u65e0\u6cd5\u548c\u5ba2\u6237\u7aef\u5efa\u7acb\u65b0\u8fde\u63a5\u3002<\/p>\n<p>\u57fa\u4e8e\u4e0a\u8ff0\u5904\u7406\u65b9\u5f0f&#xff0c;\u5728\u5355\u7ebf\u7a0b\/\u5355\u8fdb\u7a0b\u573a\u666f\u4e0b&#xff0c;\u670d\u52a1\u5668\u662f\u65e0\u6cd5\u5904\u7406\u591a\u8fde\u63a5\u7684&#xff0c;\u89e3\u51b3\u65b9\u6848\u5e38\u7528\u7684\u6709\u4e09\u79cd&#xff1a;<\/p>\n<li>\u4f7f\u7528\u591a\u7ebf\u7a0b\u5b9e\u73b0<\/li>\n<li>\u4f7f\u7528\u591a\u8fdb\u7a0b\u5b9e\u73b0<\/li>\n<li>\u4f7f\u7528IO\u591a\u8def\u8f6c\u63a5&#xff08;\u590d\u7528&#xff09;\u5b9e\u73b0<\/li>\n<li>\u4f7f\u7528IO\u591a\u8def\u8f6c\u63a5 &#043; \u591a\u7ebf\u7a0b\u5b9e\u73b0<\/li>\n<h3>2. \u591a\u8fdb\u7a0b\u5e76\u53d1<\/h3>\n<p>\u5982\u679c\u8981\u7f16\u5199\u591a\u8fdb\u7a0b\u7248\u7684\u5e76\u53d1\u670d\u52a1\u5668\u7a0b\u5e8f&#xff0c;\u9996\u5148\u8981\u8003\u8651&#xff0c;\u521b\u5efa\u51fa\u7684\u591a\u4e2a\u8fdb\u7a0b\u90fd\u662f\u4ec0\u4e48\u89d2\u8272&#xff0c;\u8fd9\u6837\u5c31\u53ef\u4ee5\u5728\u7a0b\u5e8f\u4e2d\u5bf9\u53f7\u5165\u5ea7\u4e86\u3002\u5728Tcp\u670d\u52a1\u5668\u7aef\u4e00\u5171\u6709\u4e24\u4e2a\u89d2\u8272&#xff0c;\u5206\u522b\u662f&#xff1a;\u76d1\u542c\u548c\u901a\u4fe1&#xff0c;\u76d1\u542c\u662f\u4e00\u4e2a\u6301\u7eed\u7684\u52a8\u4f5c&#xff0c;\u5982\u679c\u6709\u65b0\u8fde\u63a5\u5c31\u5efa\u7acb\u8fde\u63a5&#xff0c;\u5982\u679c\u6ca1\u6709\u65b0\u8fde\u63a5\u5c31\u963b\u585e\u3002\u5173\u4e8e\u901a\u4fe1\u662f\u9700\u8981\u548c\u591a\u4e2a\u5ba2\u6237\u7aef\u540c\u65f6\u8fdb\u884c\u7684&#xff0c;\u56e0\u6b64\u9700\u8981\u591a\u4e2a\u8fdb\u7a0b&#xff0c;\u8fd9\u6837\u624d\u80fd\u8fbe\u5230\u4e92\u4e0d\u5f71\u54cd\u7684\u6548\u679c\u3002\u8fdb\u7a0b\u4e5f\u6709\u4e24\u5927\u7c7b&#xff1a;\u7236\u8fdb\u7a0b\u548c\u5b50\u8fdb\u7a0b&#xff0c;\u901a\u8fc7\u5206\u6790\u6211\u4eec\u53ef\u4ee5\u8fd9\u6837\u5206\u914d\u8fdb\u7a0b&#xff1a;<\/p>\n<p>\u4efb\u52a1\u5206\u914d<\/p>\n<ul>\n<li>\u7236\u8fdb\u7a0b\u7684\u4efb\u52a1&#xff1a;\n<ul>\n<li>\u8d1f\u8d23\u76d1\u542c&#xff0c;\u5904\u7406\u5ba2\u6237\u7aef\u7684\u8fde\u63a5\u8bf7\u6c42&#xff0c;\u4e5f\u5c31\u662f\u5728\u7236\u8fdb\u7a0b\u4e2d\u5faa\u73af\u8c03\u7528accept()\u51fd\u6570<\/li>\n<li>\u521b\u5efa\u5b50\u8fdb\u7a0b&#xff1a;\u5efa\u7acb\u4e00\u4e2a\u65b0\u7684\u8fde\u63a5&#xff0c;\u5c31\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u5b50\u8fdb\u7a0b&#xff0c;\u8ba9\u8fd9\u4e2a\u5b50\u8fdb\u7a0b\u548c\u5bf9\u5e94\u7684\u5ba2\u6237\u7aef\u901a\u4fe1<\/li>\n<li>\u56de\u6536\u5b50\u8fdb\u7a0b\u8d44\u6e90&#xff1a;\u5b50\u8fdb\u7a0b\u9000\u51fa\u56de\u6536\u5176\u5185\u6838PCB\u8d44\u6e90&#xff0c;\u9632\u6b62\u51fa\u73b0\u50f5\u5c38\u8fdb\u7a0b<\/li>\n<\/ul>\n<\/li>\n<li>\u5b50\u8fdb\u7a0b&#xff1a;\u8d1f\u8d23\u901a\u4fe1&#xff0c;\u57fa\u4e8e\u7236\u8fdb\u7a0b\u5efa\u7acb\u65b0\u8fde\u63a5\u4e4b\u540e\u5f97\u5230\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26&#xff0c;\u548c\u5bf9\u5e94\u7684\u5ba2\u6237\u7aef\u5b8c\u6210\u6570\u636e\u7684\u63a5\u6536\u548c\u53d1\u9001\u3002\n<ul>\n<li>\u53d1\u9001\u6570\u636e&#xff1a;send() \/ write()<\/li>\n<li>\u63a5\u6536\u6570\u636e&#xff1a;recv() \/ read()<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>\u5728\u591a\u8fdb\u7a0b\u7248\u7684\u670d\u52a1\u5668\u7aef\u7a0b\u5e8f\u4e2d&#xff0c;\u591a\u4e2a\u8fdb\u7a0b\u662f\u6709\u8840\u7f18\u5173\u7cfb&#xff0c;\u5bf9\u5e94\u6709\u8840\u7f18\u5173\u7cfb\u7684\u8fdb\u7a0b\u6765\u8bf4&#xff0c;\u8fd8\u9700\u8981\u60f3\u660e\u767d\u4ed6\u4eec\u6709\u54ea\u4e9b\u8d44\u6e90\u662f\u53ef\u4ee5\u88ab\u7ee7\u627f\u7684&#xff0c;\u54ea\u4e9b\u8d44\u6e90\u662f\u72ec\u5360\u7684&#xff0c;\u4ee5\u53ca\u4e00\u4e9b\u5176\u4ed6\u7ec6\u8282&#xff1a;<\/p>\n<p>\u6709\u8840\u7f18\u5173\u7cfb\u7684\u8fdb\u7a0b\u6709\u54ea\u4e9b\u8d44\u6e90\u662f\u53ef\u4ee5\u88ab\u7ee7\u627f\u7684&#xff0c;\u54ea\u4e9b\u8d44\u6e90\u662f\u72ec\u5360\u7684&#xff1f;<\/p>\n<ul>\n<li>\u5b50\u8fdb\u7a0b\u662f\u7236\u8fdb\u7a0b\u7684\u62f7\u8d1d&#xff0c;\u5728\u5b50\u8fdb\u7a0b\u7684\u5185\u6838\u533aPCB\u4e2d&#xff0c;\u6587\u4ef6\u63cf\u8ff0\u7b26\u4e5f\u662f\u53ef\u4ee5\u88ab\u62f7\u8d1d\u7684&#xff0c;\u56e0\u6b64\u5728\u7236\u8fdb\u7a0b\u53ef\u4ee5\u4f7f\u7528\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u5728\u5b50\u8fdb\u7a0b\u4e2d\u4e5f\u6709\u4e00\u4efd&#xff0c;\u5e76\u4e14\u53ef\u4ee5\u4f7f\u7528\u5b83\u4eec\u505a\u548c\u7236\u8fdb\u7a0b\u4e00\u6837\u7684\u4e8b\u60c5\u3002<\/li>\n<li>\u7236\u5b50\u8fdb\u7a0b\u6709\u7528\u5404\u81ea\u7684\u72ec\u7acb\u7684\u865a\u62df\u5730\u5740\u7a7a\u95f4&#xff0c;\u56e0\u6b64\u6240\u6709\u7684\u8d44\u6e90\u90fd\u662f\u72ec\u5360\u7684<\/li>\n<li>\u4e3a\u4e86\u8282\u7701\u7cfb\u7edf\u8d44\u6e90&#xff0c;\u5bf9\u4e8e\u53ea\u6709\u5728\u7236\u8fdb\u7a0b\u624d\u80fd\u7528\u5230\u7684\u8d44\u6e90&#xff0c;\u53ef\u4ee5\u5728\u5b50\u8fdb\u7a0b\u4e2d\u5c06\u5176\u91ca\u653e\u6389&#xff0c;\u7236\u8fdb\u7a0b\u4ea6\u5982\u6b64\u3002<\/li>\n<li>\u7531\u4e8e\u9700\u8981\u5728\u7236\u8fdb\u7a0b\u4e2d\u505aaccept()\u64cd\u4f5c&#xff0c;\u5e76\u4e14\u8981\u91ca\u653e\u5b50\u8fdb\u7a0b\u8d44\u6e90&#xff0c;\u5982\u679c\u60f3\u8981\u66f4\u9ad8\u6548\u4e00\u4e0b\u53ef\u4ee5\u4f7f\u7528\u4fe1\u53f7\u7684\u65b9\u5f0f\u5904\u7406<\/li>\n<\/ul>\n<p>\u591a\u8fdb\u7a0b\u7248\u5e76\u53d1TCP\u670d\u52a1\u5668\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b&#xff1a;<\/p>\n<p>#include &lt;stdio.h&gt;<br \/>\n#include &lt;stdlib.h&gt;<br \/>\n#include &lt;unistd.h&gt;<br \/>\n#include &lt;string.h&gt;<br \/>\n#include &lt;arpa\/inet.h&gt;<br \/>\n#include &lt;signal.h&gt;<br \/>\n#include &lt;sys\/wait.h&gt;<br \/>\n#include &lt;errno.h&gt;<\/p>\n<p>\/\/ \u4fe1\u53f7\u5904\u7406\u51fd\u6570<br \/>\nvoid callback(int num)<br \/>\n{<br \/>\n    while(1)<br \/>\n    {<br \/>\n        pid_t pid &#061; waitpid(-1, NULL, WNOHANG);<br \/>\n        \/\/ -1 \u4ee3\u8868\u4efb\u610f\u5b50\u8fdb\u7a0b<br \/>\n        \/\/ NULL \u8868\u793a\u4e0d\u5173\u5fc3\u5b50\u8fdb\u7a0b\u7684\u9000\u51fa\u72b6\u6001<br \/>\n        \/\/ WNOHANG \u8868\u793a\u975e\u963b\u585e\u8c03\u7528<br \/>\n        if(pid &lt;&#061; 0)<br \/>\n        {<br \/>\n            printf(&#034;\u5b50\u8fdb\u7a0b\u6b63\u5728\u8fd0\u884c, \u6216\u8005\u5b50\u8fdb\u7a0b\u88ab\u56de\u6536\u5b8c\u6bd5\u4e86\\\\n&#034;);<br \/>\n            break;<br \/>\n        }<br \/>\n        printf(&#034;child die, pid &#061; %d\\\\n&#034;, pid);<br \/>\n    }<br \/>\n}<br \/>\nint childWork(int cfd);<br \/>\nint main()<br \/>\n{<br \/>\n    \/\/ 1. \u521b\u5efa\u76d1\u542c\u7684\u5957\u63a5\u5b57<br \/>\n    int lfd &#061; socket(AF_INET, SOCK_STREAM, 0);<br \/>\n    if(lfd &#061;&#061; -1)<br \/>\n    {<br \/>\n        perror(&#034;socket&#034;);<br \/>\n        exit(0);<br \/>\n    }int<\/p>\n<p>    \/\/ 2. \u5c06socket()\u8fd4\u56de\u503c\u548c\u672c\u5730\u7684IP\u7aef\u53e3\u7ed1\u5b9a\u5230\u4e00\u8d77<br \/>\n    struct sockaddr_in addr;<br \/>\n    addr.sin_family &#061; AF_INET;<br \/>\n    addr.sin_port &#061; htons(10000);   \/\/ \u5927\u7aef\u7aef\u53e3<br \/>\n    \/\/ INADDR_ANY\u4ee3\u8868\u672c\u673a\u7684\u6240\u6709IP, \u5047\u8bbe\u6709\u4e09\u4e2a\u7f51\u5361\u5c31\u6709\u4e09\u4e2aIP\u5730\u5740<br \/>\n    \/\/ \u8fd9\u4e2a\u5b8f\u53ef\u4ee5\u4ee3\u8868\u4efb\u610f\u4e00\u4e2aIP\u5730\u5740<br \/>\n    \/\/ \u8fd9\u4e2a\u5b8f\u4e00\u822c\u7528\u4e8e\u672c\u5730\u7684\u7ed1\u5b9a\u64cd\u4f5c<br \/>\n    addr.sin_addr.s_addr &#061; INADDR_ANY;  \/\/ \u8fd9\u4e2a\u5b8f\u7684\u503c\u4e3a0 &#061;&#061; 0.0.0.0<br \/>\n    \/\/    inet_pton(AF_INET, &#034;192.168.237.131&#034;, &amp;addr.sin_addr.s_addr);<br \/>\n    int ret &#061; bind(lfd, (struct sockaddr*)&amp;addr, sizeof(addr));<br \/>\n    \/\/\u5c06 lfd \u7ed1\u5b9a\u5230 &#096;addr&#096; \u6307\u5b9a\u7684\u672c\u5730 IP \u548c\u7aef\u53e3<br \/>\n    if(ret &#061;&#061; -1)<br \/>\n    {<br \/>\n        perror(&#034;bind&#034;);<br \/>\n        exit(0);<br \/>\n    }<\/p>\n<p>    \/\/ 3. \u8bbe\u7f6e\u76d1\u542c<br \/>\n    ret &#061; listen(lfd, 128);<br \/>\n    if(ret &#061;&#061; -1)<br \/>\n    {<br \/>\n        perror(&#034;listen&#034;);<br \/>\n        exit(0);<br \/>\n    }<\/p>\n<p>    \/\/ \u6ce8\u518c\u4fe1\u53f7\u7684\u6355\u6349<br \/>\n    struct sigaction act;<br \/>\n    act.sa_flags &#061; 0;<br \/>\n    act.sa_handler &#061; callback;<br \/>\n    sigemptyset(&amp;act.sa_mask);\/\/ \u521d\u59cb\u5316\u4fe1\u53f7\u96c6\u4e3a\u201c\u7a7a\u201d<br \/>\n    sigaction(SIGCHLD, &amp;act, NULL);\/\/\u53ea\u5c4f\u853d\u5b50\u8fdb\u7a0b\u9000\u51fa\u4fe1\u53f7SIGCHLD<br \/>\n    \/\/ \u63a5\u53d7\u591a\u4e2a\u5ba2\u6237\u7aef\u8fde\u63a5, \u5bf9\u9700\u8981\u5faa\u73af\u8c03\u7528 accept<br \/>\n    while(1)<br \/>\n    {<br \/>\n        \/\/ 4. \u963b\u585e\u7b49\u5f85\u5e76\u63a5\u53d7\u5ba2\u6237\u7aef\u8fde\u63a5<br \/>\n        struct sockaddr_in cliaddr;<br \/>\n        int clilen &#061; sizeof(cliaddr);<br \/>\n        \/\/\u5efa\u7acb\u670d\u52a1\u5668\u548c\u5ba2\u6237\u7aef\u7684\u8fde\u63a5<br \/>\n        int cfd &#061; accept(lfd, (struct sockaddr*)&amp;cliaddr, &amp;clilen);<br \/>\n        if(cfd &#061;&#061; -1)<br \/>\n        {<br \/>\n            if(errno &#061;&#061; EINTR)<br \/>\n            {<br \/>\n                \/\/ accept\u8c03\u7528\u88ab\u4fe1\u53f7\u4e2d\u65ad\u4e86, \u89e3\u9664\u963b\u585e, \u8fd4\u56de\u4e86-1<br \/>\n                \/\/EINTR\u662ferrno\u7684\u4e00\u4e2a\u53d6\u503c&#xff0c;\u8868\u793a&#xff1a;\u7cfb\u7edf\u8c03\u7528\u88ab\u4fe1\u53f7\u4e2d\u65ad\u3002<br \/>\n                \/\/ \u91cd\u65b0\u8c03\u7528\u4e00\u6b21accept<br \/>\n                continue;<br \/>\n            }<br \/>\n            perror(&#034;accept&#034;);<br \/>\n            exit(0);<\/p>\n<p>        }<br \/>\n        \/\/ \u6253\u5370\u5ba2\u6237\u7aef\u7684\u5730\u5740\u4fe1\u606f<br \/>\n        char ip[24] &#061; {0};<br \/>\n        \/\/\u4e8c\u8fdb\u5236\u7684\u7f51\u7edc\u5730\u5740&#xff08;\u6570\u503c\u578b&#xff09;\u8f6c\u6210\u5b57\u7b26\u4e32\u5f62\u5f0f\u7684 IP \u5730\u5740<br \/>\n        printf(&#034;\u5ba2\u6237\u7aef\u7684IP\u5730\u5740: %s, \u7aef\u53e3: %d\\\\n&#034;,<br \/>\n               inet_ntop(AF_INET, &amp;cliaddr.sin_addr.s_addr, ip, sizeof(ip)),<br \/>\n               ntohs(cliaddr.sin_port));<br \/>\n        \/\/ \u65b0\u7684\u8fde\u63a5\u5df2\u7ecf\u5efa\u7acb\u4e86, \u521b\u5efa\u5b50\u8fdb\u7a0b, \u8ba9\u5b50\u8fdb\u7a0b\u548c\u8fd9\u4e2a\u5ba2\u6237\u7aef\u901a\u4fe1<br \/>\n        pid_t pid &#061; fork();<br \/>\n        if(pid &#061;&#061; 0)<br \/>\n        {<br \/>\n            \/\/ \u5b50\u8fdb\u7a0b -&gt; \u548c\u5ba2\u6237\u7aef\u901a\u4fe1<br \/>\n            \/\/ \u901a\u4fe1\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26cfd\u88ab\u62f7\u8d1d\u5230\u5b50\u8fdb\u7a0b\u4e2d<br \/>\n            \/\/ \u5b50\u8fdb\u7a0b\u4e0d\u8d1f\u8d23\u76d1\u542c<br \/>\n            close(lfd);<br \/>\n            while(1)<br \/>\n            {<br \/>\n                int ret &#061; childWork(cfd);<br \/>\n                if(ret &lt;&#061;0)<br \/>\n                {<br \/>\n                    break;<br \/>\n                }<br \/>\n            }<br \/>\n            \/\/ \u9000\u51fa\u5b50\u8fdb\u7a0b<br \/>\n            close(cfd);<br \/>\n            exit(0);<br \/>\n        }<br \/>\n        else if(pid &gt; 0)<br \/>\n        {<br \/>\n            \/\/ \u7236\u8fdb\u7a0b\u4e0d\u548c\u5ba2\u6237\u7aef\u901a\u4fe1<br \/>\n            \/\/\u5173\u95ed\u670d\u52a1\u5668\u548c\u5ba2\u6237\u7aef\u7684\u8fde\u63a5\u7684\u5957\u63a5\u5b57<br \/>\n            close(cfd);<br \/>\n        }<br \/>\n        esle<br \/>\n        {<br \/>\n        perror(&#034;fork&#034;);<br \/>\n        }<br \/>\n    }<br \/>\n    return 0;<br \/>\n}<\/p>\n<p>\/\/ 5. \u548c\u5ba2\u6237\u7aef\u901a\u4fe1<br \/>\nint childWork(int cfd)<br \/>\n{<\/p>\n<p>    \/\/ \u63a5\u6536\u6570\u636e<br \/>\n    char buf[1024];<br \/>\n    memset(buf, 0, sizeof(buf));<br \/>\n    \/\/\u4ececfd\u4e2d\u8bfb\u53d6\u6570\u636e\u5230bbuf<br \/>\n    int len &#061; read(cfd, buf, sizeof(buf));<br \/>\n    if(len &gt; 0)<br \/>\n    {<br \/>\n        printf(&#034;\u5ba2\u6237\u7aefsay: %s\\\\n&#034;, buf);<br \/>\n        \/\/\u56de\u663e\u529f\u80fd:\u5ba2\u6237\u7aef\u53d1\u9001\u4ec0\u4e48&#xff0c;\u670d\u52a1\u5668\u5c31\u56de\u590d\u4ec0\u4e48\u3002<br \/>\n        write(cfd, buf, len);<br \/>\n    }<br \/>\n    else if(len  &#061;&#061; 0)<br \/>\n    {<br \/>\n        printf(&#034;\u5ba2\u6237\u7aef\u65ad\u5f00\u4e86\u8fde\u63a5&#8230;\\\\n&#034;);<br \/>\n    }<br \/>\n    else<br \/>\n    {<br \/>\n        perror(&#034;read&#034;);<br \/>\n    }<\/p>\n<p>    return len;<br \/>\n}<\/p>\n<p>\u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4ee3\u7801\u4e2d&#xff0c;\u7236\u5b50\u8fdb\u7a0b\u4e2d\u5206\u522b\u5173\u6389\u4e86\u7528\u4e0d\u5230\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26&#xff08;\u7236\u8fdb\u7a0b\u4e0d\u9700\u8981\u901a\u4fe1&#xff0c;\u5b50\u8fdb\u7a0b\u4e5f\u4e0d\u9700\u8981\u76d1\u542c&#xff09;\u3002\u5982\u679c\u5ba2\u6237\u7aef\u4e3b\u52a8\u65ad\u5f00\u8fde\u63a5&#xff0c;\u90a3\u4e48\u670d\u52a1\u5668\u7aef\u8d1f\u8d23\u548c\u5ba2\u6237\u7aef\u901a\u4fe1\u7684\u5b50\u8fdb\u7a0b\u4e5f\u5c31\u9000\u51fa\u4e86&#xff0c;\u5b50\u8fdb\u7a0b\u9000\u51fa\u4e4b\u540e\u4f1a\u7ed9\u7236\u8fdb\u7a0b\u53d1\u9001\u4e00\u4e2a\u53eb\u505aSIGCHLD\u7684\u4fe1\u53f7&#xff0c;\u5728\u7236\u8fdb\u7a0b\u4e2d\u901a\u8fc7sigaction()\u51fd\u6570\u6355\u6349\u4e86\u8be5\u4fe1\u53f7&#xff0c;\u901a\u8fc7\u56de\u8c03\u51fd\u6570callback()\u4e2d\u7684waitpid()\u5bf9\u9000\u51fa\u7684\u5b50\u8fdb\u7a0b\u8fdb\u884c\u4e86\u8d44\u6e90\u56de\u6536\u3002<\/p>\n<p>\u53e6\u5916\u8fd8\u6709\u4e00\u4e2a\u7ec6\u8282\u8981\u8bf4\u660e\u4e00\u4e0b&#xff0c;\u8fd9\u662f\u7236\u8fdb\u7a0b\u7684\u5904\u7406\u4ee3\u7801&#xff1a;<\/p>\n<p>int cfd &#061; accept(lfd, (struct sockaddr*)&amp;cliaddr, &amp;clilen);<br \/>\nwhile(1)<br \/>\n{<br \/>\n        int cfd &#061; accept(lfd, (struct sockaddr*)&amp;cliaddr, &amp;clilen);<br \/>\n        if(cfd &#061;&#061; -1)<br \/>\n        {<br \/>\n            if(errno &#061;&#061; EINTR)<br \/>\n            {<br \/>\n                \/\/ accept\u8c03\u7528\u88ab\u4fe1\u53f7\u4e2d\u65ad\u4e86, \u89e3\u9664\u963b\u585e, \u8fd4\u56de\u4e86-1<br \/>\n                \/\/ \u91cd\u65b0\u8c03\u7528\u4e00\u6b21accept<br \/>\n                continue;<br \/>\n            }<br \/>\n            perror(&#034;accept&#034;);<br \/>\n            exit(0);<br \/>\n        }<br \/>\n }<\/p>\n<p>\u5982\u679c\u7236\u8fdb\u7a0b\u8c03\u7528accept() \u51fd\u6570\u6ca1\u6709\u68c0\u6d4b\u5230\u65b0\u7684\u5ba2\u6237\u7aef\u8fde\u63a5&#xff0c;\u7236\u8fdb\u7a0b\u5c31\u963b\u585e\u5728\u8fd9\u513f\u4e86&#xff0c;\u8fd9\u65f6\u5019\u6709\u5b50\u8fdb\u7a0b\u9000\u51fa\u4e86&#xff0c;\u53d1\u9001\u4fe1\u53f7\u7ed9\u7236\u8fdb\u7a0b&#xff0c;\u7236\u8fdb\u7a0b\u5c31\u6355\u6349\u5230\u4e86\u8fd9\u4e2a\u4fe1\u53f7SIGCHLD&#xff0c; \u7531\u4e8e\u4fe1\u53f7\u7684\u4f18\u5148\u7ea7\u5f88\u9ad8&#xff0c;\u4f1a\u6253\u65ad\u4ee3\u7801\u6b63\u5e38\u7684\u6267\u884c\u6d41\u7a0b&#xff0c;\u56e0\u6b64\u7236\u8fdb\u7a0b\u7684\u963b\u585e\u88ab\u4e2d\u65ad&#xff0c;\u8f6c\u800c\u53bb\u5904\u7406\u8fd9\u4e2a\u4fe1\u53f7\u5bf9\u5e94\u7684\u51fd\u6570callback()&#xff0c;\u5904\u7406\u5b8c\u6bd5&#xff0c;\u518d\u6b21\u56de\u5230accept()\u4f4d\u7f6e&#xff0c;\u4f46\u662f\u8fd9\u662f\u5df2\u7ecf\u65e0\u6cd5\u963b\u585e\u4e86&#xff0c;\u51fd\u6570\u76f4\u63a5\u8fd4\u56de-1&#xff0c;\u6b64\u65f6\u51fd\u6570\u8c03\u7528\u5931\u8d25&#xff0c;\u9519\u8bef\u63cf\u8ff0\u4e3aaccept: Interrupted system call&#xff0c;\u5bf9\u5e94\u7684\u9519\u8bef\u53f7\u4e3aEINTR&#xff0c;\u7531\u4e8e\u4ee3\u7801\u662f\u88ab\u4fe1\u53f7\u4e2d\u65ad\u5bfc\u81f4\u7684\u9519\u8bef&#xff0c;\u6240\u4ee5\u53ef\u4ee5\u5728\u7a0b\u5e8f\u4e2d\u5bf9\u8fd9\u4e2a\u9519\u8bef\u53f7\u8fdb\u884c\u5224\u65ad&#xff0c;\u8ba9\u7236\u8fdb\u7a0b\u91cd\u65b0\u8c03\u7528accept()&#xff0c;\u7ee7\u7eed\u963b\u585e\u6216\u8005\u63a5\u53d7\u5ba2\u6237\u7aef\u7684\u65b0\u8fde\u63a5\u3002<\/p>\n<h3>3. \u591a\u7ebf\u7a0b\u5e76\u53d1<\/h3>\n<p>\u7f16\u5199\u591a\u7ebf\u7a0b\u7248\u7684\u5e76\u53d1\u670d\u52a1\u5668\u7a0b\u5e8f\u548c\u591a\u8fdb\u7a0b\u601d\u8def\u5dee\u4e0d\u591a&#xff0c;\u8003\u8651\u660e\u767d\u4e86\u5bf9\u53f7\u5165\u5ea7\u5373\u53ef\u3002\u591a\u7ebf\u7a0b\u4e2d\u7684\u7ebf\u7a0b\u6709\u4e24\u5927\u7c7b&#xff1a;\u4e3b\u7ebf\u7a0b&#xff08;\u7236\u7ebf\u7a0b&#xff09;\u548c\u5b50\u7ebf\u7a0b&#xff0c;\u4ed6\u4eec\u5206\u522b\u8981\u5728\u670d\u52a1\u5668\u7aef\u5904\u7406\u76d1\u542c\u548c\u901a\u4fe1\u6d41\u7a0b\u3002\u6839\u636e\u591a\u8fdb\u7a0b\u7684\u5904\u7406\u601d\u8def&#xff0c;\u5c31\u53ef\u4ee5\u8fd9\u6837\u8bbe\u8ba1\u4e86&#xff1a;<\/p>\n<p>\u591a\u7ebf\u7a0b\u5e76\u53d1<\/p>\n<ul>\n<li>\u4e3b\u7ebf\u7a0b&#xff1a;\n<ul>\n<li>\u8d1f\u8d23\u76d1\u542c&#xff0c;\u5904\u7406\u5ba2\u6237\u7aef\u7684\u8fde\u63a5\u8bf7\u6c42&#xff0c;\u4e5f\u5c31\u662f\u5728\u7236\u8fdb\u7a0b\u4e2d\u5faa\u73af\u8c03\u7528accept()\u51fd\u6570<\/li>\n<li>\u521b\u5efa\u5b50\u7ebf\u7a0b&#xff1a;\u5efa\u7acb\u4e00\u4e2a\u65b0\u7684\u8fde\u63a5&#xff0c;\u5c31\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u5b50\u8fdb\u7a0b&#xff0c;\u8ba9\u8fd9\u4e2a\u5b50\u8fdb\u7a0b\u548c\u5bf9\u5e94\u7684\u5ba2\u6237\u7aef\u901a\u4fe1<\/li>\n<li>\u56de\u6536\u5b50\u7ebf\u7a0b\u8d44\u6e90&#xff1a;\u7531\u4e8e\u56de\u6536\u9700\u8981\u8c03\u7528\u963b\u585e\u51fd\u6570&#xff0c;\u8fd9\u6837\u5c31\u4f1a\u5f71\u54cdaccept()&#xff0c;\u76f4\u63a5\u505a\u7ebf\u7a0b\u5206\u79bb\u5373\u53ef\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u5b50\u7ebf\u7a0b&#xff1a;\u8d1f\u8d23\u901a\u4fe1&#xff0c;\u57fa\u4e8e\u4e3b\u7ebf\u7a0b\u5efa\u7acb\u65b0\u8fde\u63a5\u4e4b\u540e\u5f97\u5230\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26&#xff0c;\u548c\u5bf9\u5e94\u7684\u5ba2\u6237\u7aef\u5b8c\u6210\u6570\u636e\u7684\u63a5\u6536\u548c\u53d1\u9001\u3002 &#8211;\u00a0\u53d1\u9001\u6570\u636e&#xff1a;send() \/ write() &#8211; \u63a5\u6536\u6570\u636e&#xff1a;recv() \/ read() \u5728\u591a\u7ebf\u7a0b\u7248\u7684\u670d\u52a1\u5668\u7aef\u7a0b\u5e8f\u4e2d&#xff0c;\u591a\u4e2a\u7ebf\u7a0b\u5171\u7528\u540c\u4e00\u4e2a\u5730\u5740\u7a7a\u95f4&#xff0c;\u6709\u4e9b\u6570\u636e\u662f\u5171\u4eab\u7684&#xff0c;\u6709\u4e9b\u6570\u636e\u7684\u72ec\u5360\u7684&#xff0c;\u4e0b\u9762\u6765\u5206\u6790\u4e00\u4e9b\u5176\u4e2d\u7684\u4e00\u4e9b\u7ec6\u8282&#xff1a;<\/li>\n<li>\u540c\u4e00\u5730\u5740\u7a7a\u95f4\u4e2d\u7684\u591a\u4e2a\u7ebf\u7a0b\u7684\u6808\u7a7a\u95f4\u662f\u72ec\u5360\u7684<\/li>\n<li>\u591a\u4e2a\u7ebf\u7a0b\u5171\u4eab\u5168\u5c40\u6570\u636e\u533a&#xff0c;\u5806\u533a&#xff0c;\u4ee5\u53ca\u5185\u6838\u533a\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u7b49\u8d44\u6e90&#xff0c;\u56e0\u6b64\u9700\u8981\u6ce8\u610f\u6570\u636e\u8986\u76d6\u95ee\u9898&#xff0c;\u5e76\u4e14\u5728\u591a\u4e2a\u7ebf\u7a0b\u8bbf\u95ee\u5171\u4eab\u8d44\u6e90\u7684\u65f6\u5019&#xff0c;\u8fd8\u9700\u8981\u8fdb\u884c\u7ebf\u7a0b\u540c\u6b65\u3002<\/li>\n<\/ul>\n<p> \u591a\u7ebf\u7a0b\u7248Tcp\u670d\u52a1\u5668\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b&#xff1a;<\/p>\n<p>#include &lt;stdio.h&gt;<br \/>\n#include &lt;stdlib.h&gt;<br \/>\n#include &lt;unistd.h&gt;<br \/>\n#include &lt;string.h&gt;<br \/>\n#include &lt;arpa\/inet.h&gt;<br \/>\n#include &lt;pthread.h&gt;<br \/>\nstruct SockInfo<br \/>\n{<br \/>\n    int fd;                      \/\/ \u901a\u4fe1<br \/>\n    pthread_t tid;               \/\/ \u7ebf\u7a0bID<br \/>\n    struct sockaddr_in addr;     \/\/ \u5730\u5740\u4fe1\u606f<br \/>\n};<br \/>\nstruct SockInfo infos[128];<br \/>\nvoid* working(void* arg)<br \/>\n{<br \/>\n    while(1)<br \/>\n    {<br \/>\n        struct SockInfo* info &#061; (struct SockInfo*)arg;<br \/>\n        \/\/ \u63a5\u6536\u6570\u636e<br \/>\n        char buf[1024];<br \/>\n        int ret &#061; read(info-&gt;fd, buf, sizeof(buf));<br \/>\n        if(ret &#061;&#061; 0)<br \/>\n        {<br \/>\n            printf(&#034;\u5ba2\u6237\u7aef\u5df2\u7ecf\u5173\u95ed\u8fde\u63a5&#8230;\\\\n&#034;);<br \/>\n            info-&gt;fd &#061; -1;<br \/>\n            break;<br \/>\n        }<br \/>\n        else if(ret &#061;&#061; -1)<br \/>\n        {<br \/>\n            printf(&#034;\u63a5\u6536\u6570\u636e\u5931\u8d25&#8230;\\\\n&#034;);<br \/>\n            info-&gt;fd &#061; -1;<br \/>\n            break;<br \/>\n        }<br \/>\n        else<br \/>\n        {<br \/>\n            write(info-&gt;fd, buf, strlen(buf)&#043;1);<br \/>\n        }<br \/>\n    }<br \/>\n    return NULL;<br \/>\n}<br \/>\nint main()<br \/>\n{<br \/>\n    \/\/ 1. \u521b\u5efa\u7528\u4e8e\u76d1\u542c\u7684\u5957\u63a5\u5b57<br \/>\n    int fd &#061; socket(AF_INET, SOCK_STREAM, 0);<br \/>\n    if(fd &#061;&#061; -1)<br \/>\n    {<br \/>\n        perror(&#034;socket&#034;);<br \/>\n        exit(0);<br \/>\n    }<br \/>\n    \/\/ 2. \u7ed1\u5b9a<br \/>\n    struct sockaddr_in addr;<br \/>\n    addr.sin_family &#061; AF_INET;          \/\/ ipv4<br \/>\n    addr.sin_port &#061; htons(8989);        \/\/ \u5b57\u8282\u5e8f\u5e94\u8be5\u662f\u7f51\u7edc\u5b57\u8282\u5e8f<br \/>\n    addr.sin_addr.s_addr &#061; INADDR_ANY; \/\/ &#061;&#061; 0, \u83b7\u53d6IP\u7684\u64cd\u4f5c\u4ea4\u7ed9\u4e86\u5185\u6838<br \/>\n    int ret &#061; bind(fd, (struct sockaddr*)&amp;addr, sizeof(addr));<br \/>\n    if(ret &#061;&#061; -1)<br \/>\n    {<br \/>\n        perror(&#034;bind&#034;);<br \/>\n        exit(0);<br \/>\n    }<\/p>\n<p>    \/\/ 3.\u8bbe\u7f6e\u76d1\u542c<br \/>\n    ret &#061; listen(fd, 100);<br \/>\n    if(ret &#061;&#061; -1)<br \/>\n    {<br \/>\n        perror(&#034;listen&#034;);<br \/>\n        exit(0);<br \/>\n    }<br \/>\n    \/\/ 4. \u7b49\u5f85, \u63a5\u53d7\u8fde\u63a5\u8bf7\u6c42<br \/>\n    int len &#061; sizeof(struct sockaddr);<br \/>\n    \/\/ \u6570\u636e\u521d\u59cb\u5316 \u5b9a\u4e49max\u4e2ainfos\u7ed3\u6784\u4f53<br \/>\n    int max &#061; sizeof(infos) \/ sizeof(infos[0]);<br \/>\n    for(int i&#061;0; i&lt;max; &#043;&#043;i)<br \/>\n    {<br \/>\n        bzero(&amp;infos[i], sizeof(infos[i]));<br \/>\n        infos[i].fd &#061; -1;<br \/>\n        infos[i].tid &#061; -1;<br \/>\n    }<br \/>\n    \/\/ \u7236\u8fdb\u7a0b\u76d1\u542c, \u5b50\u8fdb\u7a0b\u901a\u4fe1<br \/>\n    while(1)<br \/>\n    {<br \/>\n        \/\/ \u521b\u5efa\u5b50\u7ebf\u7a0b<br \/>\n        struct SockInfo* pinfo;<br \/>\n        for(int i&#061;0; i&lt;max; &#043;&#043;i)<br \/>\n        {<br \/>\n            if(infos[i].fd &#061;&#061; -1)<br \/>\n            {<br \/>\n                pinfo &#061; &amp;infos[i];<br \/>\n                break;<br \/>\n            }<br \/>\n            if(i &#061;&#061; max-1)<br \/>\n            {<br \/>\n                sleep(1);<br \/>\n                i&#8211;;<br \/>\n            }<br \/>\n        }<br \/>\n        int connfd &#061; accept(fd, (struct sockaddr*)&amp;pinfo-&gt;addr, &amp;len);<br \/>\n        printf(&#034;parent thread, connfd: %d\\\\n&#034;, connfd);<br \/>\n        if(connfd &#061;&#061; -1)<br \/>\n        {<br \/>\n            perror(&#034;accept&#034;);<br \/>\n            exit(0);<br \/>\n        }<br \/>\n        pinfo-&gt;fd &#061; connfd;<br \/>\n        pthread_create(&amp;pinfo-&gt;tid, NULL, working, pinfo);<br \/>\n        pthread_detach(pinfo-&gt;tid);<br \/>\n\/\/\u5c06\u7ebf\u7a0b\u8bbe\u7f6e\u4e3a\u5206\u79bb\u72b6\u6001\u3002<br \/>\n\/\/\u5206\u79bb\u72b6\u6001\u4e0b&#xff0c;\u7ebf\u7a0b\u7ed3\u675f\u540e\u7cfb\u7edf\u4f1a\u81ea\u52a8\u56de\u6536\u5b83\u7684\u8d44\u6e90&#xff0c;\u4e0d\u9700\u8981\u7236\u7ebf\u7a0b\u7b49\u5f85\u7ebf\u7a0b\u7ed3\u675f\u3002<br \/>\n\/\/\u8c03\u7528 &#096;pthread_join&#096; \u4f1a\u4f7f\u8c03\u7528\u7ebf\u7a0b\u963b\u585e&#xff0c;\u76f4\u5230\u76ee\u6807\u7ebf\u7a0b\u7ed3\u675f\u3002<br \/>\n    }<br \/>\n    \/\/ \u91ca\u653e\u8d44\u6e90<br \/>\n    close(fd);  \/\/ \u76d1\u542c<br \/>\n    return 0;<br \/>\n}<\/p>\n<p>\u5728\u7f16\u5199\u591a\u7ebf\u7a0b\u7248\u5e76\u53d1\u670d\u52a1\u5668\u4ee3\u7801\u7684\u65f6\u5019&#xff0c;\u9700\u8981\u6ce8\u610f\u7236\u5b50\u7ebf\u7a0b\u5171\u7528\u540c\u4e00\u4e2a\u5730\u5740\u7a7a\u95f4\u4e2d\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26&#xff0c;\u56e0\u6b64\u6bcf\u5f53\u5728\u4e3b\u7ebf\u7a0b\u4e2d\u5efa\u7acb\u4e00\u4e2a\u65b0\u7684\u8fde\u63a5&#xff0c;\u90fd\u9700\u8981\u5c06\u5f97\u5230\u6587\u4ef6\u63cf\u8ff0\u7b26\u503c\u4fdd\u5b58\u8d77\u6765&#xff0c;\u4e0d\u80fd\u5728\u540c\u4e00\u53d8\u91cf\u4e0a\u8fdb\u884c\u8986\u76d6&#xff0c;\u8fd9\u6837\u505a\u4e22\u5931\u4e86\u4e4b\u524d\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u503c\u4e5f\u5c31\u4e0d\u77e5\u9053\u600e\u4e48\u548c\u5ba2\u6237\u7aef\u901a\u4fe1\u4e86\u3002<\/p>\n<p>\u4e0a\u9762\u4ee3\u7801\u5c06\u6210\u529f\u5efa\u7acb\u8fde\u63a5\u4e4b\u540e\u5f97\u5230\u7684\u7528\u4e8e\u901a\u4fe1\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u503c\u4fdd\u5b58\u5230\u4e86\u4e00\u4e2a\u5168\u5c40\u6570\u7ec4\u4e2d&#xff0c;\u6bcf\u4e2a\u5b50\u7ebf\u7a0b\u9700\u8981\u548c\u4e0d\u540c\u7684\u5ba2\u6237\u7aef\u901a\u4fe1&#xff0c;\u9700\u8981\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u503c\u4e5f\u5c31\u4e0d\u4e00\u6837&#xff0c;\u53ea\u8981\u4fdd\u8bc1\u5b58\u50a8\u6bcf\u4e2a\u6709\u6548\u6587\u4ef6\u63cf\u8ff0\u7b26\u503c\u7684\u53d8\u91cf\u5bf9\u5e94\u4e0d\u540c\u7684\u5185\u5b58\u5730\u5740&#xff0c;\u5728\u4f7f\u7528\u7684\u65f6\u5019\u5c31\u4e0d\u4f1a\u53d1\u751f\u6570\u636e\u8986\u76d6\u7684\u73b0\u8c61&#xff0c;\u9020\u6210\u901a\u4fe1\u6570\u636e\u7684\u6df7\u4e71\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb707\u6b21\uff0c\u70b9\u8d5e20\u6b21\uff0c\u6536\u85cf13\u6b21\u3002\u5728TCP\u901a\u4fe1\u8fc7\u7a0b\u4e2d\uff0c\u670d\u52a1\u5668\u7aef\u542f\u52a8\u4e4b\u540e\u53ef\u4ee5\u540c\u65f6\u548c\u591a\u4e2a\u5ba2\u6237\u7aef\u5efa\u7acb\u8fde\u63a5\uff0c\u5e76\u8fdb\u884c\u7f51\u7edc\u901a\u4fe1\uff0c\u4f46\u662f\u5728\u4ecb\u7ecdTCP\u901a\u4fe1\u6d41\u7a0b\u7684\u65f6\u5019\uff0c\u63d0\u4f9b\u7684\u670d\u52a1\u5668\u4ee3\u7801\u5374\u4e0d\u80fd\u5b8c\u6210\u8fd9\u6837\u7684\u9700\u6c42<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[2148,205,43,191],"topic":[],"class_list":["post-26907","post","type-post","status-publish","format-standard","hentry","category-server","tag-linux","tag-tcp-ip","tag-43","tag-191"],"yoast_head":"<!-- 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