Linux下发送HTTP协议请求

左手的ㄟ右手 2022-06-01 07:39 168阅读 0赞

在Linux系统中用C语言实现的HTTP协议的POST和GET请求，下面是代码实现，如果要测试需要搭建个后台服务器的环境，

作者测试用的是PHP开发环境，具体搭建可参看另一篇文章：[http://blog.csdn.net/hanbo622/article/details/51598648][http_blog.csdn.net_hanbo622_article_details_51598648]

demo.c

**\[cpp\]** [view plain][] [copy][view plain]

1.  \#include <stdio.h>
2.  \#include <unistd.h>
3.  \#include <string.h>
4.  \#include <stdlib.h>
5.  \#include <netdb.h>
6.  \#include <arpa/inet.h>
7.  \#include <sys/socket.h>
8.  \#include <netinet/in.h>
9.  **int** main(**int** argc, **char** \*argv\[\]) 
10. \{ 
11.  unsigned **short** port = 80; // 服务器的端口号
12. **char** \*server\_ip = "192.168.2.203"; // 服务器ip地址
13. 
14. **int** sockfd = socket(AF\_INET, SOCK\_STREAM, 0);// 创建TCP套接字
15. **if**(sockfd < 0) 
16.  \{ 
17.  perror("socket"); 
18.  exit(-1); 
19.  \} 
20. 
21. **struct** sockaddr\_in server\_addr; //定义服务器信息结构体
22.  bzero(&server\_addr,**sizeof**(server\_addr)); 
23.  server\_addr.sin\_family = AF\_INET; 
24.  server\_addr.sin\_port = htons(port); 
25.  inet\_pton(AF\_INET, server\_ip, &server\_addr.sin\_addr); 
26. 
27. **int** err\_log = connect(sockfd, (**struct** sockaddr\*)&server\_addr, **sizeof**(server\_addr)); // 主动连接服务器
28. **if**(err\_log != 0) 
29.  \{ 
30.  perror("connect"); 
31.  close(sockfd); 
32.  exit(-1); 
33.  \} 
34. 
35. **char** str1\[1024\] = ""; 
36. **char** data\[\]="username=hanbo&num=123"; //POST 数据
37. \#if 1 //POST 格式请求
38.  sprintf(str1, "%s\\r\\n","POST http://192.168.2.203/index.php HTTP/1.1"); //http://192.168.2.203/index.php 服务端接收数据处理文件地址 
39.  sprintf(str1, "%s%s\\r\\n",str1,"Accept: image/jpeg, application/x-ms-application, image/gif, application/xaml+xml, image/pjpeg, application/x-ms-xbap, application/x-shockwave-flash, application/msword, application/vnd.ms-powerpoint, application/vnd.ms-excel, \*/\*"); 
40.  sprintf(str1, "%s%s\\r\\n",str1,"Referer: \*/\*"); 
41.  sprintf(str1, "%s%s\\r\\n",str1,"Accept-Language: en-US,zh-CN;q=0.5"); 
42.  sprintf(str1, "%s%s\\r\\n",str1,"User-Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; qdesk 2.4.1265.203; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; InfoPath.3)"); 
43.  sprintf(str1, "%s%s\\r\\n",str1,"Content-Type: application/x-www-form-urlencoded"); 
44.  sprintf(str1, "%s%s\\r\\n",str1,"Accept-Encoding: gzip, deflate"); 
45.  sprintf(str1, "%s%s\\r\\n",str1,"Host: 192.168.2.203"); //服务器地址
46.  sprintf(str1, "%s%s%d\\r\\n",str1,"Content-Length: ",strlen(data)); //数据长度
47.  sprintf(str1, "%s%s\\r\\n",str1,"Connection: Keep-Alive"); 
48.  sprintf(str1,"%s%s\\r\\n",str1,"Cache-Control: no-cache"); 
49.  sprintf(str1, "%s\\r\\n",str1); //多加个回车
50.  sprintf(str1, "%s%s\\r\\n",str1,data); 
51. \#else //GET 格式请求
52.  sprintf(str1, "%s\\r\\n","GET http://192.168.2.203/index.php?username=hanbo&num=123 HTTP/1.1"); //服务端接收数据处理文件地址,并带参数 
53.  sprintf(str1, "%s%s\\r\\n",str1,"Accept: image/jpeg, application/x-ms-application, image/gif, application/xaml+xml, image/pjpeg, application/x-ms-xbap, application/x-shockwave-flash, application/msword, application/vnd.ms-powerpoint, application/vnd.ms-excel, \*/\*"); 
54.  sprintf(str1, "%s%s\\r\\n",str1,"Accept-Language: en-US,zh-CN;q=0.5"); 
55.  sprintf(str1, "%s%s\\r\\n",str1,"User-Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; qdesk 2.4.1265.203; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; InfoPath.3)"); 
56.  sprintf(str1, "%s%s\\r\\n",str1,"Accept-Encoding: gzip, deflate"); 
57.  sprintf(str1, "%s%s\\r\\n",str1,"Host: 192.168.2.203"); //服务器地址
58.  sprintf(str1, "%s%s\\r\\n",str1,"Connection: Keep-Alive"); 
59.  sprintf(str1,"%s%s\\r\\n",str1,"Cookie: JSESSIONID=5386A9443729D7EB0B61E38A9C7CF52F"); 
60.  sprintf(str1, "%s\\r\\n",str1); 
61. \#endif
62.  printf("----------------------------- HTTP Data ----------------------------------\\n"); 
63.  printf("%s",str1); 
64.  printf("--------------------------- Data Len=%d ----------------------------------\\n\\n",strlen(str1)); 
65. 
66. **int** ret=send(sockfd, str1, strlen(str1), 0); // 向服务器发送信息
67. **if**(ret<0) 
68.  \{ 
69.  perror("send"); 
70.  close(sockfd); 
71.  exit(-1); 
72.  \} 
73. 
74. **char** recv\_buf\[521\]=""; 
75.  recv(sockfd, recv\_buf, **sizeof**(recv\_buf), 0); 
76.  printf("------------------------ server retrun data -------------------------------\\n"); 
77.  printf("%s\\n\\n",recv\_buf); 
78.  close(sockfd); 
79. 
80. **return** 0; 
81. \}

在搭建好的服务端，在Apache安装目录D:\\AppServ\\Apache24\\htdocs 中新建文件index.php内容如下：

**\[php\]** [view plain][] [copy][view plain]

1.  <?php 
2.  /\* 接收POST 格式数据处理 \*/
3.  echo"username=".$\_POST\['username'\]; 
4.  echo"\\nnum=".$\_POST\['num'\]; 
5.  
6.  /\* 接收GET 格式数据处理 \*/
7.  // echo "username=".$\_GET\['username'\];
8.  // echo "\\nnum=".$\_GET\['num'\];
9.  ?>

运行POST请求会出现如下结果：

**\[cpp\]** [view plain][] [copy][view plain]

1.  \----------------------------- HTTP Data ---------------------------------- 
2.  POST http://192.168.2.203/index.php HTTP/1.1
3.  Accept: image/jpeg, application/x-ms-application, image/gif, application/xaml+xml, image/pjpeg, application/x-ms-xbap, application/x-shockwave-flash, application/msword, application/vnd.ms-powerpoint, application/vnd.ms-excel, \*/\*
4.  Referer: \*/\* 
5.  Accept-Language: en-US,zh-CN;q=0.5 
6.  User-Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; qdesk 2.4.1265.203; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; InfoPath.3) 
7.  Content-Type: application/x-www-form-urlencoded 
8.  Accept-Encoding: gzip, deflate 
9.  Host: 192.168.2.203 
10. Content-Length: 22 
11. Connection: Keep-Alive 
12. Cache-Control: no-cache 
13. 
14. username=hanbo&num=123 
15. \--------------------------- Data Len=701 ---------------------------------- 
16. 
17. \------------------------ server retrun data ------------------------------- 
18. HTTP/1.1 200 OK 
19. Date: Mon, 06 Jun 2016 02:40:28 GMT 
20. Server: Apache/2.4.10 (Win32) PHP/5.5.25 
21. X-Powered-By: PHP/5.5.25 
22. Content-Length: 22 
23. Keep-Alive: timeout=5, max=100 
24. Connection: Keep-Alive 
25. Content-Type: text/html 
26. 
27. username=hanbo 
28. num=123

运行GET请求会出现如下结果：

**\[cpp\]** [view plain][] [copy][view plain]

1.  \----------------------------- HTTP Data ---------------------------------- 
2.  GET http://192.168.2.203/index.php?username=hanbo&num=123 HTTP/1.1
3.  Accept: image/jpeg, application/x-ms-application, image/gif, application/xaml+xml, image/pjpeg, application/x-ms-xbap, application/x-shockwave-flash, application/msword, application/vnd.ms-powerpoint, application/vnd.ms-excel, \*/\* 
4.  Accept-Language: en-US,zh-CN;q=0.5 
5.  User-Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; qdesk 2.4.1265.203; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; InfoPath.3) 
6.  Accept-Encoding: gzip, deflate 
7.  Host: 192.168.2.203 
8.  Connection: Keep-Alive 
9.  Cookie: JSESSIONID=5386A9443729D7EB0B61E38A9C7CF52F 
10. 
11. \--------------------------- Data Len=644 ---------------------------------- 
12. 
13. \------------------------ server retrun data ------------------------------- 
14. HTTP/1.1 200 OK 
15. Date: Mon, 06 Jun 2016 02:42:52 GMT 
16. Server: Apache/2.4.10 (Win32) PHP/5.5.25 
17. X-Powered-By: PHP/5.5.25 
18. Content-Length: 22 
19. Keep-Alive: timeout=5, max=100 
20. Connection: Keep-Alive 
21. Content-Type: text/html 
22. 
23. username=hanbo 
24. num=123

转自： http://blog.csdn.net/hanbo622/article/details/51598724

[http_blog.csdn.net_hanbo622_article_details_51598648]: http://blog.csdn.net/hanbo622/article/details/51598648
[view plain]: http://blog.csdn.net/hanbo622/article/details/51598724#