{"id":79437,"date":"2026-03-02T08:06:31","date_gmt":"2026-03-02T00:06:31","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/79437.html"},"modified":"2026-03-02T08:06:31","modified_gmt":"2026-03-02T00:06:31","slug":"c%e8%af%ad%e8%a8%80%e7%bd%91%e7%bb%9c%e7%bc%96%e7%a8%8b%e5%ae%9e%e6%88%98%ef%bc%9a%e7%94%a8socket%e5%92%8cbind%e5%bf%ab%e9%80%9f%e6%90%ad%e5%bb%ba%e6%9c%ac%e5%9c%b0tcp%e6%9c%8d%e5%8a%a1%e5%99%a8","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/79437.html","title":{"rendered":"C\u8bed\u8a00\u7f51\u7edc\u7f16\u7a0b\u5b9e\u6218\uff1a\u7528socket()\u548cbind()\u5feb\u901f\u642d\u5efa\u672c\u5730TCP\u670d\u52a1\u5668\uff08\u9644\u5b8c\u6574\u4ee3\u7801\uff09"},"content":{"rendered":"<h2>C\u8bed\u8a00\u7f51\u7edc\u7f16\u7a0b\u5b9e\u6218\uff1a\u7528socket()\u548cbind()\u5feb\u901f\u642d\u5efa\u672c\u5730TCP\u670d\u52a1\u5668\uff08\u9644\u5b8c\u6574\u4ee3\u7801\uff09<\/h2>\n<p>\u6700\u8fd1\u5728\u5e26\u51e0\u4e2a\u521a\u5165\u884c\u7684\u65b0\u4eba\u505a\u9879\u76ee\uff0c\u4ed6\u4eec\u6700\u5934\u75bc\u7684\u5c31\u662f\u7f51\u7edc\u901a\u4fe1\u8fd9\u5757\u3002\u4e00\u63d0\u5230C\u8bed\u8a00\u5199\u670d\u52a1\u5668\uff0c\u5f88\u591a\u4eba\u7b2c\u4e00\u53cd\u5e94\u5c31\u662f\u201c\u5e95\u5c42\u201d\u3001\u201c\u590d\u6742\u201d\u3001\u201c\u5bb9\u6613\u51fa\u9519\u201d\u3002\u786e\u5b9e\uff0c\u6bd4\u8d77\u90a3\u4e9b\u81ea\u5e26HTTP\u670d\u52a1\u5668\u7684\u73b0\u4ee3\u8bed\u8a00\uff0c\u7528C\u4ece\u5934\u5199\u4e00\u4e2aTCP\u670d\u52a1\u5668\u9700\u8981\u81ea\u5df1\u5904\u7406\u5b57\u8282\u5e8f\u3001\u5957\u63a5\u5b57\u9009\u9879\u3001\u9519\u8bef\u7801\u8fd9\u4e9b\u7ec6\u8282\u3002\u4f46\u6362\u4e2a\u89d2\u5ea6\u770b\uff0c\u8fd9\u6070\u6070\u662f\u7406\u89e3\u7f51\u7edc\u901a\u4fe1\u672c\u8d28\u7684\u6700\u4f73\u9014\u5f84\u3002\u5f53\u4f60\u4eb2\u624b\u7528socket()\u548cbind()\u628a\u670d\u52a1\u5668\u8dd1\u8d77\u6765\uff0c\u770b\u5230\u5ba2\u6237\u7aef\u6210\u529f\u8fde\u4e0a\u5e76\u6536\u53d1\u6570\u636e\u65f6\uff0c\u90a3\u79cd\u6210\u5c31\u611f\u662f\u76f4\u63a5\u7528\u6846\u67b6\u65e0\u6cd5\u6bd4\u62df\u7684\u3002\u8fd9\u7bc7\u6587\u7ae0\u5c31\u662f\u5199\u7ed9\u90a3\u4e9b\u60f3\u771f\u6b63\u641e\u61c2\u7f51\u7edc\u7f16\u7a0b\uff0c\u800c\u4e0d\u662f\u4ec5\u4ec5\u8c03\u7528API\u7684\u5f00\u53d1\u8005\u3002\u6211\u4f1a\u5e26\u4f60\u4ece\u96f6\u5f00\u59cb\uff0c\u4e00\u6b65\u6b65\u642d\u5efa\u4e00\u4e2a\u80fd\u5728\u672c\u5730\u8fd0\u884c\u7684TCP\u670d\u52a1\u5668\uff0c\u8fc7\u7a0b\u4e2d\u9047\u5230\u7684\u5751\u548c\u89e3\u51b3\u65b9\u6cd5\uff0c\u6211\u90fd\u4f1a\u6beb\u65e0\u4fdd\u7559\u5730\u5206\u4eab\u3002<\/p>\n<h3>1. \u73af\u5883\u51c6\u5907\u4e0e\u6838\u5fc3\u6982\u5ff5\u626b\u76f2<\/h3>\n<p>\u5728\u52a8\u624b\u5199\u4ee3\u7801\u4e4b\u524d\uff0c\u6211\u4eec\u9700\u8981\u786e\u4fdd\u5f00\u53d1\u73af\u5883\u5c31\u7eea\uff0c\u5e76\u5bf9\u51e0\u4e2a\u6838\u5fc3\u6982\u5ff5\u6709\u6e05\u6670\u7684\u8ba4\u8bc6\u3002\u5f88\u591a\u4eba\u4e00\u4e0a\u6765\u5c31\u6284\u4ee3\u7801\uff0c\u7ed3\u679c\u7f16\u8bd1\u62a5\u9519\u3001\u8fd0\u884c\u5d29\u6e83\uff0c\u6839\u672c\u4e0d\u77e5\u9053\u95ee\u9898\u51fa\u5728\u54ea\u3002<\/p>\n<p>\u9996\u5148\uff0c\u4f60\u9700\u8981\u4e00\u4e2a\u80fd\u7f16\u8bd1C\u4ee3\u7801\u7684\u73af\u5883\u3002\u5728Linux\u6216macOS\u4e0a\uff0c\u7cfb\u7edf\u81ea\u5e26\u7684GCC\u6216Clang\u5c31\u8db3\u591f\u4e86\u3002Windows\u7528\u6237\u53ef\u4ee5\u8003\u8651\u5b89\u88c5MinGW-w64\u6216\u8005\u4f7f\u7528WSL\uff08Windows Subsystem for Linux\uff09\u6765\u83b7\u5f97\u63a5\u8fd1Linux\u7684\u5f00\u53d1\u4f53\u9a8c\u3002\u6253\u5f00\u7ec8\u7aef\uff0c\u8f93\u5165 gcc &#8211;version \u786e\u8ba4\u7f16\u8bd1\u5668\u5df2\u5b89\u88c5\u3002\u6211\u5f3a\u70c8\u5efa\u8bae\u5728Linux\u73af\u5883\u4e0b\u8fdb\u884c\u7f51\u7edc\u7f16\u7a0b\u7684\u5b66\u4e60\u548c\u5f00\u53d1\uff0c\u56e0\u4e3a\u76f8\u5173\u7684\u7cfb\u7edf\u8c03\u7528\u548c\u5934\u6587\u4ef6\u6700\u4e3a\u6807\u51c6\uff0c\u6392\u9519\u4e5f\u66f4\u5bb9\u6613\u3002<\/p>\n<p>\u63a5\u4e0b\u6765\uff0c\u7406\u89e3\u51e0\u4e2a\u5173\u952e\u672f\u8bed\uff1a<\/p>\n<ul>\n<li>\u5957\u63a5\u5b57\uff08Socket\uff09\uff1a\u4f60\u53ef\u4ee5\u628a\u5b83\u60f3\u8c61\u6210\u7f51\u7edc\u901a\u4fe1\u7684\u201c\u7aef\u70b9\u201d\u6216\u201c\u63d2\u5ea7\u201d\u3002\u5b83\u662f\u64cd\u4f5c\u7cfb\u7edf\u63d0\u4f9b\u7ed9\u5e94\u7528\u7a0b\u5e8f\u7684\u4e00\u4e2a\u62bd\u8c61\u63a5\u53e3\uff0c\u901a\u8fc7\u8fd9\u4e2a\u63a5\u53e3\uff0c\u4f60\u7684\u7a0b\u5e8f\u624d\u80fd\u548c\u7f51\u7edc\u4e0a\u7684\u5176\u4ed6\u7a0b\u5e8f\u4ea4\u6362\u6570\u636e\u3002\u5728Linux\u4e2d\uff0c\u5957\u63a5\u5b57\u672c\u8d28\u4e0a\u662f\u4e00\u79cd\u7279\u6b8a\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u3002<\/li>\n<li>TCP\uff08Transmission Control Protocol\uff09\uff1a\u4e00\u79cd\u9762\u5411\u8fde\u63a5\u7684\u3001\u53ef\u9760\u7684\u3001\u57fa\u4e8e\u5b57\u8282\u6d41\u7684\u4f20\u8f93\u5c42\u901a\u4fe1\u534f\u8bae\u3002\u6211\u4eec\u5e38\u8bf4\u7684\u201c\u4e09\u6b21\u63e1\u624b\u201d\u5efa\u7acb\u8fde\u63a5\u3001\u201c\u56db\u6b21\u6325\u624b\u201d\u65ad\u5f00\u8fde\u63a5\uff0c\u5c31\u662fTCP\u4e3a\u4e86\u4fdd\u8bc1\u53ef\u9760\u6027\u800c\u8bbe\u8ba1\u7684\u673a\u5236\u3002\u7528TCP\u5199\u7684\u670d\u52a1\u5668\uff0c\u80fd\u786e\u4fdd\u6570\u636e\u6309\u5e8f\u3001\u4e0d\u4e22\u5931\u5730\u5230\u8fbe\u5bf9\u65b9\u3002<\/li>\n<li>\u7aef\u53e3\uff08Port\uff09\uff1a\u4e00\u53f0\u673a\u5668\u4e0a\u53ef\u80fd\u6709\u591a\u4e2a\u7f51\u7edc\u5e94\u7528\u5728\u8fd0\u884c\uff0c\u7aef\u53e3\u53f7\u5c31\u50cf\u6bcf\u4e2a\u5e94\u7528\u7684\u201c\u95e8\u724c\u53f7\u201d\u3002\u670d\u52a1\u5668\u7a0b\u5e8f\u9700\u8981\u7ed1\u5b9a\u5230\u4e00\u4e2a\u7279\u5b9a\u7684\u7aef\u53e3\u4e0a\uff08\u598280\u30018080\uff09\uff0c\u5ba2\u6237\u7aef\u624d\u80fd\u901a\u8fc7IP\u5730\u5740+\u7aef\u53e3\u53f7\u51c6\u786e\u5730\u627e\u5230\u5b83\u3002<\/li>\n<li>\u672c\u5730\u56de\u73af\u5730\u5740\uff08127.0.0.1\uff09\uff1a\u8fd9\u662f\u4e00\u4e2a\u7279\u6b8a\u7684IP\u5730\u5740\uff0c\u6307\u5411\u672c\u673a\u3002\u5728\u5f00\u53d1\u6d4b\u8bd5\u9636\u6bb5\uff0c\u6211\u4eec\u901a\u5e38\u8ba9\u670d\u52a1\u5668\u548c\u5ba2\u6237\u7aef\u90fd\u5728\u540c\u4e00\u53f0\u673a\u5668\u4e0a\u8fd0\u884c\uff0c\u8fd9\u65f6\u4f7f\u7528127.0.0.1\u4f5c\u4e3a\u670d\u52a1\u5668\u5730\u5740\u662f\u6700\u65b9\u4fbf\u3001\u6700\u5b89\u5168\u7684\u9009\u62e9\uff0c\u5b83\u4e0d\u4f1a\u7ecf\u8fc7\u771f\u5b9e\u7684\u7f51\u5361\u3002<\/li>\n<\/ul>\n<p>\u63d0\u793a\uff1a\u5728\u5f00\u59cb\u7f16\u7801\u524d\uff0c\u5efa\u8bae\u7528 netstat -an | grep LISTEN\uff08Linux\/macOS\uff09\u6216 netstat -ano | findstr LISTEN\uff08Windows\uff09\u547d\u4ee4\u67e5\u770b\u4e00\u4e0b\u5f53\u524d\u7cfb\u7edf\u6709\u54ea\u4e9b\u7aef\u53e3\u5df2\u88ab\u5360\u7528\uff0c\u907f\u514d\u81ea\u5df1\u9009\u7528\u7684\u7aef\u53e3\uff08\u6bd4\u59828080\uff09\u51b2\u7a81\u3002<\/p>\n<h3>2. \u4ecesocket()\u5f00\u59cb\uff1a\u521b\u5efa\u901a\u4fe1\u7684\u57fa\u77f3<\/h3>\n<p>\u4e00\u5207\u7f51\u7edc\u901a\u4fe1\u90fd\u59cb\u4e8e\u4e00\u4e2a\u5957\u63a5\u5b57\u3002socket() \u51fd\u6570\u5c31\u662f\u5411\u64cd\u4f5c\u7cfb\u7edf\u7533\u8bf7\u8fd9\u4e2a\u201c\u901a\u4fe1\u7aef\u70b9\u201d\u7684\u7cfb\u7edf\u8c03\u7528\u3002\u5b83\u7684\u539f\u578b\u5b9a\u4e49\u5728 &lt;sys\/socket.h&gt; \u4e2d\uff1a<\/p>\n<p>#include &lt;sys\/socket.h&gt;<br \/>\nint socket(int domain, int type, int protocol);<\/p>\n<p>\u8fd9\u4e2a\u51fd\u6570\u6709\u4e09\u4e2a\u53c2\u6570\uff0c\u5b83\u4eec\u5171\u540c\u51b3\u5b9a\u4e86\u5957\u63a5\u5b57\u7684\u201c\u6027\u683c\u201d\u3002<\/p>\n<p>\u7b2c\u4e00\u4e2a\u53c2\u6570 domain\uff08\u57df\u6216\u5730\u5740\u65cf\uff09\uff0c\u6307\u5b9a\u4e86\u5957\u63a5\u5b57\u5c06\u4f7f\u7528\u7684\u534f\u8bae\u65cf\u3002\u5bf9\u4e8e\u4e92\u8054\u7f51\u901a\u4fe1\uff0c\u6211\u4eec\u6700\u5e38\u7528\u7684\u662f\uff1a<\/p>\n<ul>\n<li>AF_INET\uff1a IPv4\u7f51\u7edc\u534f\u8bae\u3002\u76ee\u524d\u7edd\u5927\u591a\u6570\u573a\u666f\u4ecd\u5728\u4f7f\u7528\u5b83\u3002<\/li>\n<li>AF_INET6\uff1a IPv6\u7f51\u7edc\u534f\u8bae\u3002\u662f\u672a\u6765\u7684\u8d8b\u52bf\uff0c\u4f46\u5728\u5185\u7f51\u6216\u7279\u5b9a\u573a\u666f\u4e0b\u652f\u6301\u5ea6\u53ef\u80fd\u4e0d\u4e00\u3002<\/li>\n<li>AF_UNIX \u6216 AF_LOCAL\uff1a \u7528\u4e8e\u540c\u4e00\u53f0\u4e3b\u673a\u4e0a\u7684\u8fdb\u7a0b\u95f4\u901a\u4fe1\uff08IPC\uff09\uff0c\u901f\u5ea6\u975e\u5e38\u5feb\u3002<\/li>\n<\/ul>\n<p>\u7b2c\u4e8c\u4e2a\u53c2\u6570 type\uff08\u5957\u63a5\u5b57\u7c7b\u578b\uff09\uff0c\u51b3\u5b9a\u4e86\u6570\u636e\u4f20\u8f93\u7684\u65b9\u5f0f\u3002\u4e3b\u8981\u6709\u4e24\u79cd\uff1a<\/p>\n<ul>\n<li>SOCK_STREAM\uff1a \u63d0\u4f9b\u9762\u5411\u8fde\u63a5\u7684\u3001\u53ef\u9760\u7684\u3001\u53cc\u5411\u7684\u5b57\u8282\u6d41\u3002\u8fd9\u5c31\u662fTCP\u5957\u63a5\u5b57\u7684\u7c7b\u578b\u3002\u6570\u636e\u50cf\u6c34\u7ba1\u4e2d\u7684\u6c34\u6d41\u4e00\u6837\uff0c\u662f\u6709\u987a\u5e8f\u3001\u53ef\u9760\u7684\u3002<\/li>\n<li>SOCK_DGRAM\uff1a \u63d0\u4f9b\u65e0\u8fde\u63a5\u7684\u3001\u4e0d\u53ef\u9760\u7684\u62a5\u6587\u670d\u52a1\u3002\u8fd9\u662fUDP\u5957\u63a5\u5b57\u7684\u7c7b\u578b\u3002\u6bcf\u4e2a\u6570\u636e\u5305\u90fd\u662f\u72ec\u7acb\u7684\uff0c\u53ef\u80fd\u4e22\u5931\u3001\u91cd\u590d\u6216\u4e71\u5e8f\uff0c\u4f46\u5f00\u9500\u5c0f\u3001\u901f\u5ea6\u5feb\u3002<\/li>\n<\/ul>\n<p>\u7b2c\u4e09\u4e2a\u53c2\u6570 protocol\uff08\u534f\u8bae\uff09\uff0c\u901a\u5e38\u8bbe\u7f6e\u4e3a0\u3002\u8fd9\u610f\u5473\u7740\u8ba9\u64cd\u4f5c\u7cfb\u7edf\u6839\u636e\u524d\u4e24\u4e2a\u53c2\u6570\uff08domain \u548c type\uff09\u81ea\u52a8\u9009\u62e9\u9ed8\u8ba4\u7684\u534f\u8bae\u3002\u4f8b\u5982\uff0c\u5f53 domain=AF_INET \u4e14 type=SOCK_STREAM \u65f6\uff0c\u7cfb\u7edf\u4f1a\u81ea\u52a8\u9009\u62e9TCP\u534f\u8bae\u3002<\/p>\n<p>socket() \u8c03\u7528\u6210\u529f\u4f1a\u8fd4\u56de\u4e00\u4e2a\u975e\u8d1f\u6574\u6570\uff0c\u8fd9\u5c31\u662f\u5957\u63a5\u5b57\u63cf\u8ff0\u7b26\uff08socket descriptor\uff09\u3002\u540e\u7eed\u6240\u6709\u7684\u64cd\u4f5c\uff0c\u5982\u7ed1\u5b9a\u3001\u76d1\u542c\u3001\u8bfb\u5199\uff0c\u90fd\u9700\u8981\u7528\u5230\u8fd9\u4e2a\u63cf\u8ff0\u7b26\u3002\u5982\u679c\u5931\u8d25\uff0c\u5219\u8fd4\u56de-1\uff0c\u5e76\u8bbe\u7f6e\u5168\u5c40\u53d8\u91cf errno \u6765\u6307\u793a\u9519\u8bef\u539f\u56e0\u3002<\/p>\n<p>\u4e0b\u9762\u662f\u4e00\u4e2a\u521b\u5efaTCP\u5957\u63a5\u5b57\u7684\u6700\u7b80\u793a\u4f8b\uff0c\u5e76\u52a0\u5165\u4e86\u57fa\u672c\u7684\u9519\u8bef\u5904\u7406\uff1a<\/p>\n<p>#include &lt;stdio.h&gt;<br \/>\n#include &lt;sys\/socket.h&gt;<br \/>\n#include &lt;errno.h&gt; \/\/ \u7528\u4e8e\u8bbf\u95eeerrno<\/p>\n<p>int main() {<br \/>\n    int server_fd;<br \/>\n    \/\/ \u521b\u5efaIPv4\u7684TCP\u5957\u63a5\u5b57<br \/>\n    server_fd = socket(AF_INET, SOCK_STREAM, 0);<br \/>\n    if (server_fd == -1) {<br \/>\n        \/\/ \u4f7f\u7528perro<\/p>\n","protected":false},"excerpt":{"rendered":"<p>C\u8bed\u8a00\u7f51\u7edc\u7f16\u7a0b\u5b9e\u6218\uff1a\u7528socket()\u548cbind()\u5feb\u901f\u642d\u5efa\u672c\u5730TCP\u670d\u52a1\u5668\uff08\u9644\u5b8c\u6574\u4ee3\u7801\uff09<br 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