{"id":26765,"date":"2025-04-19T16:56:46","date_gmt":"2025-04-19T08:56:46","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/26765.html"},"modified":"2025-04-19T16:56:46","modified_gmt":"2025-04-19T08:56:46","slug":"c%e5%ad%a6%e4%b9%a0%e4%b9%8b%e6%9c%8d%e5%8a%a1%e5%99%a8epoll%e6%a8%a1%e5%9e%8b%e3%80%81%e5%a4%84%e7%90%86%e5%ae%a2%e6%88%b7%e7%ab%af%e8%af%b7%e6%b1%82%e3%80%81%e5%90%91%e5%ae%a2%e6%88%b7%e7%ab%af","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/26765.html","title":{"rendered":"C++\u5b66\u4e60\u4e4b\u670d\u52a1\u5668EPOLL\u6a21\u578b\u3001\u5904\u7406\u5ba2\u6237\u7aef\u8bf7\u6c42\u3001\u5411\u5ba2\u6237\u7aef\u56de\u590d\u6570\u3001\u5411\u5ba2\u6237\u7aef\u53d1\u9001\u6587\u4ef6"},"content":{"rendered":"

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10.\u5bf9\u6587\u4ef6\u5bf9\u5e94content-type\u5982\u4f55\u67e5\u8be2<\/p>\n

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13.http\u8bf7\u6c42\u5904\u7406\u6d41\u7a0b\u56de\u987e<\/p>\n

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1.\u542f\u52a8epoll\u6a21\u578b<\/h2>\n

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3.\u63a5\u53d7\u5ba2\u6237\u7aefHttp\u8bf7\u6c42\u6570\u636e<\/h2>\n

–\u00a0## sscanf\u51fd\u6570 \u00a0\u00a0```c \u00a0\u00a0\/\/ \u51fd\u6570\u539f\u578b \u00a0\u00a0\/\/ \u5c06\u53c2\u6570str\u7684\u5b57\u7b26\u4e32\u6839\u636e\u53c2\u6570format\u5b57\u7b26\u4e32\u6765\u8f6c\u6362\u5e76\u683c\u5f0f\u5316\u6570\u636e，\u8f6c\u6362\u540e\u7684\u7ed3\u679c\u5b58\u4e8e\u5bf9\u5e94\u7684\u53c2\u6570\u5185\u3002 \u00a0\u00a0sscanf(const char\u00a0*str, const char *format, …)\u3002 \u00a0\u00a0 \u00a0\u00a0\u5177\u4f53\u529f\u80fd\u5982\u4e0b： \u00a0\u00a0（1）\u6839\u636e\u683c\u5f0f\u4ece\u5b57\u7b26\u4e32\u4e2d\u63d0\u53d6\u6570\u636e\u3002\u5982\u4ece\u5b57\u7b26\u4e32\u4e2d\u53d6\u51fa\u6574\u6570\u3001\u6d6e\u70b9\u6570\u548c\u5b57\u7b26\u4e32\u7b49\u3002 \u00a0\u00a0（2）\u53d6\u6307\u5b9a\u957f\u5ea6\u7684\u5b57\u7b26\u4e32 \u00a0\u00a0（3）\u53d6\u5230\u6307\u5b9a\u5b57\u7b26\u4e3a\u6b62\u7684\u5b57\u7b26\u4e32 \u00a0\u00a0（4）\u53d6\u4ec5\u5305\u542b\u6307\u5b9a\u5b57\u7b26\u96c6\u7684\u5b57\u7b26\u4e32 \u00a0\u00a0（5）\u53d6\u5230\u6307\u5b9a\u5b57\u7b26\u96c6\u4e3a\u6b62\u7684\u5b57\u7b26\u4e32 \u00a0\u00a0 \u00a0\u00a0sscanf\u53ef\u4ee5\u652f\u6301\u683c\u5f0f\u5b57\u7b26%[]： \u00a0\u00a0 \u00a0\u00a0(1)-: \u8868\u793a\u8303\u56f4，\u5982：%[1-9]\u8868\u793a\u53ea\u8bfb\u53d61-9\u8fd9\u51e0\u4e2a\u6570\u5b57 %[a-z]\u8868\u793a\u53ea\u8bfb\u53d6a-z\u5c0f\u5199\u5b57\u6bcd，\u7c7b\u4f3c\u5730 %[A-Z]\u53ea\u8bfb\u53d6\u5927\u5199\u5b57\u6bcd \u00a0\u00a0(2)^: \u8868\u793a\u4e0d\u53d6，\u5982：%[^1]\u8868\u793a\u8bfb\u53d6\u9664'1'\u4ee5\u5916\u7684\u6240\u6709\u5b57\u7b26 %[^\/]\u8868\u793a\u9664\/\u4ee5\u5916\u7684\u6240\u6709\u5b57\u7b26 \u00a0\u00a0(3),: \u8303\u56f4\u53ef\u4ee5\u7528","\u76f8\u8fde\u63a5 \u5982%[1-9,a-z]\u8868\u793a\u540c\u65f6\u53d61-9\u6570\u5b57\u548ca-z\u5c0f\u5199\u5b57\u6bcd\u00a0 \u00a0\u00a0(4)\u539f\u5219：\u4ece\u7b2c\u4e00\u4e2a\u5728\u6307\u5b9a\u8303\u56f4\u5185\u7684\u6570\u5b57\u5f00\u59cb\u8bfb\u53d6，\u5230\u7b2c\u4e00\u4e2a\u4e0d\u5728\u8303\u56f4\u5185\u7684\u6570\u5b57\u7ed3\u675f%s \u53ef\u4ee5\u770b\u6210%[] \u7684\u4e00\u4e2a\u7279\u4f8b %[^ ](\u6ce8\u610f^\u540e\u9762\u6709\u4e00\u4e2a\u7a7a\u683c！) \u00a0\u00a0```<\/p>\n

\"\"<\/p>\n

4.\u4ee3\u7801\u56de\u987e\u4ece\u63a5\u53d7\u7684\u6570\u636e\u4e2d\u8bfb\u51fa\u8bf7\u6c42\u884c<\/h2>\n

\u00a0\u00a0```c \u00a0\u00a0const char *s = "http:\/\/www.baidu.com:1234"; \u00a0\u00a0char protocol[32] = { 0 }; \u00a0\u00a0char host[128] = { 0 }; \u00a0\u00a0char port[8] = { 0 }; \u00a0\u00a0sscanf(s,"%[^:]:\/\/%[^:]:%[1-9]",protocol,host,port); \u00a0\u00a0 \u00a0\u00a0printf("protocol: %s\\\\n",protocol); \u00a0\u00a0printf("host: %s\\\\n",host); \u00a0\u00a0printf("port: %s\\\\n",port); \u00a0\u00a0 \u00a0\u00a0\/\/\/ \u00a0\u00a0sscanf("123456\u00a0abcdedf",\u00a0"%[^\u00a0]",\u00a0buf); \u00a0\u00a0printf("%s\\\\n",\u00a0buf); \u00a0\u00a0\u7ed3\u679c\u4e3a：123456 \u00a0\u00a0\/\/\/ \u00a0\u00a0sscanf("123456abcdedfBCDEF",\u00a0"%[1-9a-z]",\u00a0buf); \u00a0\u00a0printf("%s\\\\n",\u00a0buf); \u00a0\u00a0\u7ed3\u679c\u4e3a：123456abcdedf \u00a0\u00a0\/\/\/ \u00a0\u00a0sscanf("123456abcdedfBCDEF",\u00a0"%[^A-Z]",\u00a0buf); \u00a0\u00a0printf("%s\\\\n",\u00a0buf); \u00a0\u00a0\u7ed3\u679c\u4e3a：123456abcdedf \u00a0\u00a0\"\"<\/p>\n

5.\u8bf7\u6c42\u884c\u89e3\u6790<\/h2>\n

\u00a0## scandir\u51fd\u6570 \u00a0\u00a0```c \u00a0\u00a0\/\/ \u5934\u6587\u4ef6 \u00a0\u00a0#include <dirent.h>\u00a0 \u00a0\u00a0\/\/\u51fd\u6570\u5b9a\u4e49 \u00a0\u00a0\/* \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u51fd\u6570scandir\u626b\u63cfdir\u76ee\u5f55\u4e0b\u4ee5\u53cadir\u5b50\u76ee\u5f55\u4e0b\u6ee1\u8db3filter\u8fc7\u6ee4\u6a21\u5f0f\u7684\u6587\u4ef6，\u8fd4\u56de\u7684\u7ed3\u679c\u662fcompare\u51fd\u6570\u7ecf\u8fc7\u6392\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5e8f\u7684，\u5e76\u4fdd\u5b58\u5728 namelist\u4e2d\u3002\u6ce8\u610fnamelist\u662f\u901a\u8fc7malloc\u52a8\u6001\u5206\u914d\u5185\u5b58\u7684,\u6240\u4ee5\u5728\u4f7f\u7528\u65f6\u8981\u6ce8\u610f\u91ca\u653e\u5185\u5b58\u3002 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0alphasort\u548cversionsort \u662f\u4f7f\u7528\u5230\u7684\u4e24\u79cd\u6392\u5e8f\u7684\u51fd\u6570\u3002\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5f53\u51fd\u6570\u6210\u529f\u6267\u884c\u65f6\u8fd4\u56de\u627e\u5230\u5339\u914d\u6a21\u5f0f\u6587\u4ef6\u7684\u4e2a\u6570，\u5982\u679c\u5931\u8d25\u5c06\u8fd4\u56de-1\u3002 \u00a0\u00a0*\/ \u00a0\u00a0int scandir(const char\u00a0*dir,struct dirent **namelist,int (*filter)(const void *b), \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0int (* compare)(const struct dirent **, const struct dirent **)); \u00a0\u00a0int alphasort(const void\u00a0*a, const void *b); \u00a0\u00a0int versionsort(const void\u00a0*a, const void *b); \u00a0\u00a0```<\/p>\n

\"\"<\/p>\n

6.\u6b63\u5219\u8868\u8fbe\u5f0f\u4ee5\u53ca\u5339\u914d<\/h2>\n

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7.\u89e3\u6790\u8bf7\u6c42\u884c\u4ee5\u53ca\u540e\u7eed\u5904\u7406<\/h2>\n

> \u8d85\u6587\u672c\u6807\u8bb0\u8bed\u8a00(**H**yper\u00a0**T**ext\u00a0**M**arkup\u00a0**L**anguage)，\u6807\u51c6\u901a\u7528\u6807\u8bb0\u8bed\u8a00\u4e0b\u7684\u4e00\u4e2a\u5e94\u7528\u3002HTML \u4e0d\u662f\u4e00\u79cd\u7f16\u7a0b\u8bed\u8a00，\u800c\u662f\u4e00\u79cd\u6807\u8bb0\u8bed\u8a00 (markup language)，\u662f\u7f51\u9875\u5236\u4f5c\u6240\u5fc5\u5907\u7684\u3002 > > \u8d85\u6587\u672c\u5c31\u662f\u6307\u9875\u9762\u5185\u53ef\u4ee5\u5305\u542b\u56fe\u7247\u3001\u94fe\u63a5，\u751a\u81f3\u97f3\u4e50\u3001\u7a0b\u5e8f\u7b49\u975e\u6587\u5b57\u5143\u7d20\u3002 > > \u8d85\u6587\u672c\u6807\u8bb0\u8bed\u8a00\u7684\u7ed3\u6784\u5305\u62ec**\u201c**\u5934\u201d\u90e8\u5206（\u82f1\u8bed：Head）\u3001\u548c\u201c\u4e3b\u4f53\u201d\u90e8\u5206（\u82f1\u8bed：Body），\u5176\u4e2d\u201c\u5934\u201d\u90e8\u63d0\u4f9b\u5173\u4e8e\u7f51\u9875\u7684\u4fe1\u606f，\u201c\u4e3b\u4f53\u201d\u90e8\u5206\u63d0\u4f9b\u7f51\u9875\u7684\u5177\u4f53\u5185\u5bb9\u3002 –\u00a0html \u7279\u70b9 \u00a0\u00a0–\u00a0\u8bed\u6cd5\u975e\u5e38\u7b80\u6d01\u3001\u6bd4\u8f83\u677e\u6563，\u4ee5\u76f8\u5e94\u7684\u82f1\u8bed\u5355\u8bcd\u5173\u952e\u5b57\u8fdb\u884c\u7ec4\u5408 \u00a0\u00a0\u00a0\u00a0–\u00a0\u6709\u5f88\u591a\u6807\u7b7e, \u4e0d\u540c\u6807\u7b7e\u8868\u8fbe\u7684\u610f\u4e49\u4e0d\u540c, \u6bcf\u4e2a\u6807\u7b7e\u7684\u529f\u80fd\u90fd\u662f\u56fa\u5b9a\u4e0d\u53d8\u7684 \u00a0\u00a0\u00a0\u00a0–\u00a0\u4e0d\u6309\u7167\u6807\u51c6\u683c\u5f0f\u5199\u7f51\u9875, \u4e5f\u53ef\u4ee5\u88ab\u89e3\u6790 \u00a0\u00a0–\u00a0html\u6807\u7b7e\u4e0d\u533a\u5206\u5927\u5c0f\u5199 \u00a0\u00a0–\u00a0\u5927\u591a\u6570\u6807\u7b7e\u662f\u6210\u5bf9\u51fa\u73b0\u7684, \u6709\u5f00\u59cb, \u6709\u7ed3\u675f \u00a0\u00a0\u00a0\u00a0–\u00a0<html><\/html> \u00a0\u00a0\u00a0\u00a0–\u00a0\u7279\u6b8a\u7684\u5355\u6807\u7b7e: <img>\u00a0\u00a0<hr> <br> \u00a0\u00a0–\u00a0\u6210\u5bf9\u7684\u6807\u7b7e \u00a0\u00a0–\u00a0\u4e0d\u6210\u5bf9\u51fa\u73b0\u7684\u79f0\u4e4b\u4e3a\u77ed\u6807\u7b7e –\u00a0html\u6587\u4ef6\u547d\u540d \u00a0\u00a0–\u00a0`xxx.html` \u00a0\u00a0–\u00a0`xxx.htm`<\/p>\n

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8.\u5bf9path\u5904\u7406\u8bf4\u660e<\/h2>\n

–\u00a0html\u6587\u4ef6\u547d\u540d \u00a0\u00a0–\u00a0`xxx.html` \u00a0\u00a0–\u00a0`xxx.htm` –\u00a0\u6ce8\u91ca \u00a0\u00a0```html \u00a0\u00a0<!– \u8fd9\u662f\u4e00\u4e2a\u6ce8\u91ca –> \u00a0\u00a0``` –\u00a0\u7ed3\u6784 \u00a0\u00a0```html \u00a0\u00a0<html>\u00a0\u00a0\u00a0\u00a0<!– \u6839\u6807\u7b7e, \u4ee3\u8868\u7f51\u9875\u7684\u5f00\u59cb –> \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<head> \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<!– tab\u9875\u7684\u6807\u9898, \u548c\u7f51\u9875\u7684\u4e00\u4e9b\u5c5e\u6027\u8bbe\u7f6e –> \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<title>\u63e1\u624b\u6807\u9898<\/title> \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/head> \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<body> \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<!– \u5728\u7f51\u9875\u4e2d\u663e\u793a\u7684\u5185\u5bb9 –> \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/body> \u00a0\u00a0<\/html> \u00a0\u00a0```<\/p>\n

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9.\u5982\u4f55\u56de\u590d\u54cd\u5e94\u6570\u636e<\/h2>\n

## 1.2 \u6587\u5b57\u548c\u6807\u9898\u6807\u7b7e ```html <!–\u00a0\u00a0\u6807\u9898\u6807\u7b7e , h1\u6700\u5927\u7684, h6\u6700\u5c0f\u7684 –> <h1><\/h1> <h2><\/h2> <h3><\/h3> …… <h6><\/h6> <!–\u00a0\u00a0\u6587\u5b57 , \u4e60\u60ef\u4e0a\u5c06\u5c5e\u6027\u7684\u503c\u653e\u5230\u5355\u5f15\u53f7, \u6216\u8005\u53cc\u5f15\u53f7\u4e2d –> <font color="blue" size="5">hello,world<\/font> \u5c5e\u6027:\u00a0 \u00a0\u00a0\u00a0\u00a0color: \u6587\u5b57\u989c\u8272 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u25a1 \u8868\u793a\u65b9\u5f0f: \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00ae \u82f1\u6587\u5355\u8bcd: red green blue…… \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00ae \u4f7f\u752816\u8fdb\u5236\u7684\u5f62\u5f0f\u8868\u793a\u989c\u8272: #ffffff \u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0size: \u6587\u5b57\u5927\u5c0f \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u25a1\u00a0\u00a0\u8303\u56f4 1 — 7 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00ae 1\u6700\u5c0f, 7\u6700\u5927\u00a0\u00a0\u00a0\u00a0 <!– \u6bb5\u843d \u81ea\u52a8\u6362\u884c –> <p><\/p> <!– \u6362\u884c \u5355\u6807\u7b7e, \u672b\u5c3e\u6709\u6ca1\u6709\/\u90fd\u53ef\u4ee5 –> <br\/>\u00a0\u00a0or <br> <!– \u6c34\u5e73\u7ebf \u5355\u6807\u7b7e, \u672b\u5c3e\u6709\u6ca1\u6709\/\u90fd\u53ef\u4ee5 –> <hr\/>\u00a0\u00a0or <hr> <!–\u00a0\u00a0\u6587\u672c\u683c\u5f0f\u00a0\u00a0–> \u52a0\u7c97: \u00a0\u00a0\u00a0\u00a0<strong><\/strong>\u00a0 \u00a0\u00a0\u00a0\u00a0<b><\/b>\u00a0 \u6587\u672c\u503e\u659c\u6807\u7b7e\u00a0 \u00a0\u00a0\u00a0\u00a0<em><\/em>\u00a0 \u00a0\u00a0\u00a0\u00a0<i><\/i>\u00a0 \u5220\u9664\u7ebf\u6807\u7b7e\u00a0 \u00a0\u00a0\u00a0\u00a0<del><\/del>\u00a0 \u00a0\u00a0\u00a0\u00a0<s><\/s>\u00a0 \u4e0b\u5212\u7ebf\u6807\u7b7e \u00a0\u00a0\u00a0\u00a0<ins><\/ins>\u00a0 \u00a0\u00a0\u00a0\u00a0<u><\/u>\u00a0 ```<\/p>\n

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10.\u5bf9\u6587\u4ef6\u5bf9\u5e94content-type\u5982\u4f55\u67e5\u8be2<\/h2>\n

\u00a0```http \u00a0\u00a0POST \/ HTTP\/1.1 \u00a0\u00a0Host: 192.168.1.8:6789 \u00a0\u00a0Connection: keep-alive \u00a0\u00a0Content-Length: 98 \u00a0\u00a0Cache-Control: max-age=0 \u00a0\u00a0Upgrade-Insecure-Requests: 1 \u00a0\u00a0Origin: null \u00a0\u00a0Content-Type: application\/x-www-form-urlencoded \u00a0\u00a0User-Agent: Mozilla\/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit\/537.36 (KHTML, like Gecko) Chrome\/80.0.3987.106 Safari\/537.36 \u00a0\u00a0Accept: text\/html,application\/xhtml+xml,application\/xml;q=0.9,image\/webp,image\/apng,*\/*;q=0.8,application\/signed-exchange;v=b3;q=0.9 \u00a0\u00a0Accept-Encoding: gzip, deflate \u00a0\u00a0Accept-Language: zh-CN,zh;q=0.9,en;q=0.8 \u00a0\u00a0 \u00a0\u00a0username=subwen%40qq.com&phone=1111111&email=sub%40qq.com&date=2020-01-01&sex=male&class=1&rule=on<\/p>\n

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11.\u670d\u52a1\u5668\u5904\u7406\u6d41\u7a0b\u68b3\u7406<\/h2>\n

\u7b2c 2-9 \u884c: \u54cd\u5e94\u5934(\u6d88\u606f\u62a5\u5934) \u00a0\u00a0\u00a0\u00a0– Content-Type: \u670d\u52a1\u5668\u7ed9\u5ba2\u6237\u7aef\u56de\u590d\u7684\u6570\u636e\u5757\u7684\u683c\u5f0f == http\u54cd\u5e94\u7b2c\u56db\u90e8\u5206\u7684\u6570\u636e\u5757\u683c\u5f0f \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0– text\/plain; ==> \u7eaf\u6587\u672c \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0– charset=iso-8859-1 ==> \u6570\u636e\u7684\u5b57\u7b26\u7f16\u7801 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0– iso-8859-1 ==> \u4e0d\u652f\u6301\u4e2d\u6587 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0– utf8: \u652f\u6301\u4e2d\u6587 \u00a0\u00a0\u00a0\u00a0– Content-Length: \u670d\u52a1\u5668\u7ed9\u5ba2\u6237\u7aef\u56de\u590d\u7684\u6570\u636e\u5757\u7684\u957f\u5ea6 == http\u54cd\u5e94\u7b2c\u56db\u90e8\u5206\u7684\u6570\u636e\u5757\u5b57\u8282\u6570 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0– \u5bf9\u5e94\u7684value\u503c\u5fc5\u987b\u662f\u6b63\u786e\u7684\u6570\u503c \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0– \u5982\u679c\u4e0d\u77e5\u9053\u6570\u636e\u5757\u7684\u5b57\u8282\u6570, \u53ef\u4ee5\u6307\u5b9a-1 \u00a0\u00a0\u00a0\u00a0 \u7b2c 11-16 \u884c: \u670d\u52a1\u5668\u7ed9\u5ba2\u6237\u7aef\u56de\u590d\u7684\u54cd\u5e94\u6570\u636e<\/p>\n

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\"\"<\/p>\n

12.\u548c\u5ba2\u6237\u7aef\u65ad\u5f00\u8fde\u63a5\u5904\u7406<\/h2>\n

1.\u00a0http\u72b6\u6001\u7801 \u00a0\u00a0\u00a0> \u72b6\u6001\u4ee3\u7801\u6709\u4e09\u4f4d\u6570\u5b57\u7ec4\u6210，\u7b2c\u4e00\u4e2a\u6570\u5b57\u5b9a\u4e49\u4e86\u54cd\u5e94\u7684\u7c7b\u522b，\u5171\u5206\u4e94\u79cd\u7c7b\u522b: \u00a0\u00a0\u00a0> \u00a0\u00a0\u00a0> – 1xx：\u6307\u793a\u4fe1\u606f–\u8868\u793a\u8bf7\u6c42\u5df2\u63a5\u6536，\u7ee7\u7eed\u5904\u7406 \u00a0\u00a0\u00a0> – 2xx：\u6210\u529f–\u8868\u793a\u8bf7\u6c42\u5df2\u88ab\u6210\u529f\u63a5\u6536\u3001\u7406\u89e3\u3001\u63a5\u53d7 \u00a0\u00a0\u00a0> – 3xx：\u91cd\u5b9a\u5411–\u8981\u5b8c\u6210\u8bf7\u6c42\u5fc5\u987b\u8fdb\u884c\u66f4\u8fdb\u4e00\u6b65\u7684\u64cd\u4f5c \u00a0\u00a0\u00a0> – 4xx：\u5ba2\u6237\u7aef\u9519\u8bef–\u8bf7\u6c42\u6709\u8bed\u6cd5\u9519\u8bef\u6216\u8bf7\u6c42\u65e0\u6cd5\u5b9e\u73b0 \u00a0\u00a0\u00a0> – 5xx：\u670d\u52a1\u5668\u7aef\u9519\u8bef–\u670d\u52a1\u5668\u672a\u80fd\u5b9e\u73b0\u5408\u6cd5\u7684\u8bf7\u6c42 \u00a0\u00a0\u00a0> \u5e38\u89c1\u72b6\u6001\u7801： \u00a0\u00a0\u00a0> \u00a0\u00a0\u00a0> – 200 OK\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5ba2\u6237\u7aef\u8bf7\u6c42\u6210\u529f \u00a0\u00a0\u00a0> – 400 Bad Request\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5ba2\u6237\u7aef\u8bf7\u6c42\u6709\u8bed\u6cd5\u9519\u8bef，\u4e0d\u80fd\u88ab\u670d\u52a1\u5668\u6240\u7406\u89e3 \u00a0\u00a0\u00a0> – 401 Unauthorized\u00a0\u00a0\u00a0\u00a0\u00a0\u8bf7\u6c42\u672a\u7ecf\u6388\u6743，\u8fd9\u4e2a\u72b6\u6001\u4ee3\u7801\u5fc5\u987b\u548cWWW-Authenticate\u62a5\u5934\u57df\u4e00\u8d77\u4f7f\u7528\u00a0 \u00a0\u00a0\u00a0> – 403 Forbidden\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u670d\u52a1\u5668\u6536\u5230\u8bf7\u6c42，\u4f46\u662f\u62d2\u7edd\u63d0\u4f9b\u670d\u52a1 \u00a0\u00a0\u00a0> – 404 Not Found\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u8bf7\u6c42\u8d44\u6e90\u4e0d\u5b58\u5728，eg：\u8f93\u5165\u4e86\u9519\u8bef\u7684URL \u00a0\u00a0\u00a0> – 500 Internal Server Error\u00a0\u00a0\u00a0\u00a0\u00a0\u670d\u52a1\u5668\u53d1\u751f\u4e0d\u53ef\u9884\u671f\u7684\u9519\u8bef \u00a0\u00a0\u00a0> – 503 Server Unavailable\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u670d\u52a1\u5668\u5f53\u524d\u4e0d\u80fd\u5904\u7406\u5ba2\u6237\u7aef\u7684\u8bf7\u6c42，\u4e00\u6bb5\u65f6\u95f4\u540e\u53ef\u80fd\u6062\u590d\u6b63\u5e38<\/p>\n

\"\"<\/p>\n

13.http\u8bf7\u6c42\u5904\u7406\u6d41\u7a0b\u56de\u987e<\/h2>\n

```c \/* \u5ba2\u6237\u7aef: \u6d4f\u89c8\u5668 \u00a0\u00a0\u00a0\u00a0– \u901a\u8fc7\u6d4f\u89c8\u5668\u8bbf\u95ee\u670d\u52a1\u5668: \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0– \u8bbf\u95ee\u65b9\u5f0f: \u670d\u52a1\u5668\u7684IP\u5730\u5740:\u7aef\u53e3 \u00a0\u00a0\u00a0\u00a0– \u5e94\u7528\u5c42\u534f\u8bae\u4f7f\u7528: http, \u6570\u636e\u9700\u8981\u5728\u6d4f\u89c8\u5668\u7aef\u4f7f\u7528\u8be5\u534f\u8bae\u8fdb\u884c\u5305\u88c5 \u00a0\u00a0\u00a0\u00a0– \u54cd\u5e94\u6d88\u606f\u7684\u5904\u7406\u4e5f\u662f\u6d4f\u89c8\u5668\u5b8c\u6210\u7684 => \u7a0b\u5e8f\u733f\u4e0d\u9700\u8981\u7ba1 \u00a0\u00a0\u00a0\u00a0– \u5ba2\u6237\u7aef\u901a\u8fc7url\u8bbf\u95ee\u670d\u52a1\u5668\u8d44\u6e90 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0– \u5ba2\u6237\u7aef\u8bbf\u95ee\u7684\u8def\u5f84: \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a01. http:\/\/192.168.1.100:8989\/\u00a0\u00a0\u6216\u8005\u00a0\u00a0http:\/\/192.168.1.100:8989 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0– \u8bbf\u95ee\u670d\u52a1\u5668\u63d0\u4f9b\u7684\u8d44\u6e90\u76ee\u5f55\u7684\u6839\u76ee\u5f55 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0– \u5e76\u4e0d\u662f\u670d\u52a1\u5668\u4e0a\u7684 \/ \u76ee\u5f55\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0– \u8fd9\u4e2a\u76ee\u5f55\u6839\u636e\u670d\u52a1\u5668\u7aef\u7684\u63cf\u8ff0\u5e94\u8be5\u662f: \/home\/robin\/luffy \u76ee\u5f55 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0– \u8bf7\u6c42\u884c: \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0GET \/ HTTP\/1.1 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a02. http:\/\/192.168.1.100:8989\/a.txt \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0– \u7aef\u53e3\u540e\u8fb9\u7684\/\u4ee3\u8868\u670d\u52a1\u5668\u7684\u8d44\u6e90\u6839\u76ee\u5f55 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0– \u5728\u670d\u52a1\u5668\u7aef\u8def\u5f84: \/home\/robin\/luffy \u76ee\u5f55 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0– \u5ba2\u6237\u7aef\u8981\u8bbf\u95ee\u670d\u52a1\u5668\u4e0a\u7684a.txt\u7684\u6587\u4ef6 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0– a.txt \u8fd9\u4e2a\u6587\u4ef6\u5728\u670d\u52a1\u5668\u63d0\u4f9b\u7684\u8d44\u6e90\u76ee\u5f55\u4e2d \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0– \u670d\u52a1\u5668\u4e0a\u7684\u8def\u5f84: \/home\/robin\/luffy\/a.txt \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0– \u8bf7\u6c42\u884c: \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0GET \/a.txt HTTP\/1.1 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a03. http:\/\/192.168.1.100:8989\/hello\/a.txt \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0– http:\/\/192.168.1.100:8989: \u670d\u52a1\u5668\u5730\u5740 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0– \/hello\/a.txt \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0– \/: \u670d\u52a1\u5668\u7aef\u63d0\u4f9b\u7684\u8d44\u6e90\u6839\u76ee\u5f55 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0– hello: \u8d44\u6e90\u6839\u76ee\u5f55\u7684\u5b50\u76ee\u5f55 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0– a.txt: \u5728hello\u76ee\u5f55\u4e2d \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0– \u8bf7\u6c42\u884c: \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0GET \/hello\/a.txt HTTP\/1.1 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a04. http:\/\/192.168.1.100:8989\/hello\/wrold\/ \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0– http:\/\/192.168.1.100:8989: \u670d\u52a1\u5668\u5730\u5740 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0– \/hello\/world\/ \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0– \/: \u670d\u52a1\u5668\u7aef\u63d0\u4f9b\u7684\u8d44\u6e90\u6839\u76ee\u5f55 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0– hello: \u8d44\u6e90\u6839\u76ee\u5f55\u7684\u5b50\u76ee\u5f55 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0– world\/: \u5982\u679cworld\u540e\u8fb9\u6709\/\u4ee3\u8868\u8fd9\u662f\u4e00\u4e2a\u76ee\u5f55, \u8fd9\u4e2a\u76ee\u5f55\u5728hello\u76ee\u5f55\u4e2d \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0– \u8bf7\u6c42\u884c: \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0GET \/hello\/world\/ HTTP\/1.1 *\/<\/p>\n

14.\u53d1\u9001\u72b6\u6001\u884c\u548c\u54cd\u5e94\u5934<\/h2>\n

\/\/ \u670d\u52a1\u5668\u7aef\u5904\u7406\u7684\u4f2a\u4ee3\u7801 int main() { \u00a0\u00a0\u00a0\u00a0\/\/ 1. \u521b\u5efa\u76d1\u542c\u7684fd \u00a0\u00a0\u00a0\u00a0socket(); \u00a0\u00a0\u00a0\u00a0\/\/ 2. \u7ed1\u5b9a \u00a0\u00a0\u00a0\u00a0bind(); \u00a0\u00a0\u00a0\u00a0\/\/ 3. \u8bbe\u7f6e\u76d1\u542c \u00a0\u00a0\u00a0\u00a0listen(); \u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\/\/ 4. \u521b\u5efaepoll\u6a21\u578b \u00a0\u00a0\u00a0\u00a0epoll_create(); \u00a0\u00a0\u00a0\u00a0epoll_ctl(); \u00a0\u00a0\u00a0\u00a0\/\/ 5. \u68c0\u6d4b \u00a0\u00a0\u00a0\u00a0while(1) \u00a0\u00a0\u00a0\u00a0{ \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0epoll_wait(); \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/ \u76d1\u542c\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0accept(); \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/ \u901a\u4fe1\u7684 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/ \u63a5\u6536\u6570\u636e->http\u8bf7\u6c42\u6d88\u606f \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0recvAndParseHttp(); \u00a0\u00a0\u00a0\u00a0} \u00a0\u00a0\u00a0\u00a0return 0; }<\/p>\n

\"\"<\/p>\n

15.\u6839\u636e\u6587\u4ef6\u83b7\u53d6content-type\u548c\u53d1\u9001\u6587\u4ef6<\/h2>\n

```http HTTP\/1.1 200 Ok Server: micro_httpd Date: Fri, 18 Jul 2014 14:34:26 GMT Content-Type: text\/plain; charset=iso-8859-1 (\u5fc5\u9009\u9879)\u00a0 Content-Length: 32\u00a0\u00a0 Location: https:\/\/www.biadu.com Content-Language: zh-CN Last-Modified: Fri, 18 Jul 2014 08:36:36 GMT Connection: close #include <stdio.h> int main(void) { \u00a0\u00a0\u00a0\u00a0printf("hello world!\\\\n"); \u00a0\u00a0\u00a0\u00a0return 0; } ```<\/p>\n

16.\u7a0b\u5e8f\u8c03\u8bd5\u548c\u8bbf\u95ee\u6587\u4ef6\u6d4b\u8bd5<\/h2>\n<\/p>\n

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