Linux下C语言socket用post发送表单 【模拟网页提交表单】

http://blog.163.com/liguiqin_500/blog/static/763064200912693950579/

1. #include <stdlib.h>
   
2. #include <errno.h>
   
3. #include <string.h>
   
4. #include <unistd.h>
   
5. #include <sys/socket.h>
   
6. #include <netinet/in.h>
   
7. #include <arpa/inet.h>
   
8. #include <netdb.h>
   
9. #include <stdio.h>
   
10. 
    
11. void posturl()
    
12. {
    
13. int sockfd;
    
14. struct sockaddr_in addr;
    
15. struct hostent *pURL;
    
16. 
    
17. char *pHost = 0, *pPOST = 0;
    
18. static char text[BUFSIZ];
    
19. char header[BUFSIZ] = "";
    
20. int i;
    
21. 
    
22. /*
    
23. * 设定socket参数,并未真正初始化
    
24. */
    
25. sockfd = socket(AF_INET, SOCK_STREAM, 0);
    
26. 
    
27. addr.sin_family = AF_INET;
    
28. inet_aton("192.168.10.200",&addr.sin_addr);
    
29. addr.sin_port = htons(80);
    
30. 
    
31. /*
    
32. * 组织发送到web服务器的信息
    
33. * 为何要发送下面的信息请参考HTTP协议的约定
    
34. */
    
35. strcat(header, "POST ");
    
36. strcat(header, "/pass");
    
37. strcat(header, " HTTP/1.1\r\n");
    
38. strcat(header, "*/*\r\n");
    
39. strcat(header, "Referer: http://192.168.10.200/password.htm\r\n");
    
40. strcat(header, "Accept-Language: zh-cn\r\n");
    
41. strcat(header,"Content-Type: application/x-www-form-urlencoded\r\n");
    
42. strcat(header, "HOST: ");
    
43. strcat(header, "192.168.10.200\r\n");
    
44. strcat(header, "Content-Length: 26\r\n");
    
45. strcat(header, "Connection: Keep-Alive\r\n");
    
46. strcat(header, "Cache-Control: no-cache\r\n\r\n");
    
47. strcat(header, "password=1234&submit=Apply");
    
48. strcat(header, "\r\n");
    
49. 
    
50. /*
    
51. * 连接到服务器，发送请求header，并接受反馈（即网页源代码）
    
52. */
    
53. connect(sockfd,(struct sockaddr *)&addr,sizeof(struct sockaddr_in));
    
54. 
    
55. i = send(sockfd, header, strlen(header), 0);
    
56. 
    
57. printf("%d\n",i);
    
58. 
    
59. while ( recv(sockfd, text, BUFSIZ, 0) > 0)
    
60. {
    
61. printf("%s", text);
    
62. for(i = 0; i < BUFSIZ; i++)
    
63. text[i]='\0';
    
64. //strnset(text, '\0', BUFSIZ);
    
65. }
    
66. 
    
67. close(sockfd);
    
68. 
    
69. 
    
70. }
    
71. 
    
72. int main()
    
73. {
    
74. posturl();
    
75. return 0;
    
76. }

http://www.maben.com.cn/archives/212.html

1. //*****************************************//
   
2. //*********利用C实现自动发包***************//
   
3. //*********作者：马 犇******************//
   
4. //*********时间：2011-6-25*****************//
   
5. //*****************************************//
   
6. 
   
7. #include "stdafx.h"
   
8. #include "stdio.h"
   
9. #include "stdlib.h"
   
10. #include "winsock2.h"
    
11. #pragma comment(lib,"ws2_32.lib")
    
12. int main(int argc, char* argv[])
    
13. {
    
14. 
    
15.   SOCKET hsocket;
    
16.   SOCKADDR_IN saServer;
    
17.   WSADATA wsadata;
    
18.   LPHOSTENT lphostent;
    
19.   int nRet;
    
20.   char* host_name="www.********.com";
    
21.   char* reqHead="POST ********* HTTP/1.1\r\n" //此为要发送的数据包
    
22.         "Accept: */*\r\n"
    
23.         "Referer: http://www.*********\r\n"
    
24.         "Accept-Language: zh-CN\r\n"
    
25.         "User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0; BOIE9;ZHCN; twchrome)\r\n"
    
26.         "Content-Type: application/x-www-form-urlencoded\r\n"
    
27.         "Accept-Encoding: gzip, deflate\r\n"
    
28.         "Host: www.*******.com\r\n"
    
29.         "Content-Length: 375\r\n"
    
30.         "Connection: Keep-Alive\r\n"
    
31.         "Cache-Control: no-cache\r\n"
    
32.         "Cookie: ************** \r\n\r\n"
    
33.         "user=test&pass=123";
    
34.         
    
35.  // 初始化套接字
    
36.     if(WSAStartup(MAKEWORD(2,2),&wsadata))
    
37.         printf("初始化SOCKET出错！");
    
38.     lphostent=gethostbyname(host_name);
    
39.     if(lphostent==NULL)
    
40.         printf("lphostent为空！");
    
41.     hsocket = socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
    
42.     saServer.sin_family = AF_INET;
    
43.     saServer.sin_port = htons(80);
    
44.     saServer.sin_addr = *((LPIN_ADDR)*lphostent->h_addr_list);
    
45.     // 利用SOCKET连接
    
46.     nRet = connect(hsocket,(LPSOCKADDR)&saServer,sizeof(SOCKADDR_IN));
    
47.     if(nRet == SOCKET_ERROR)
    
48.     {
    
49.         printf("建立连接时出错！");
    
50.         closesocket(hsocket);
    
51.         return 0;
    
52.     }
    
53.     // 利用SOCKET发送
    
54. 
    
55.     nRet = send(hsocket,req,strlen(req),0);
    
56.     if(nRet==SOCKET_ERROR)
    
57.     {
    
58.         printf("发送数据包时出错！");
    
59.         closesocket(hsocket);
    
60.     }
    
61.     char Dest[3000];
    
62.     nRet=1;
    
63.     while(nRet>0)
    
64.     {
    
65.         // 接收返回数据包
    
66.         nRet=recv(hsocket,(LPSTR)Dest,sizeof(Dest),0);
    
67.         if(nRet>0)
    
68.             Dest[nRet]=0;
    
69.         else
    
70.             Dest[0]=0;
    
71.         // 显示返回数据包的大小、内容
    
72.         printf("\nReceived bytes:%d\n",nRet);
    
73.         printf("Result:\n%s",Dest);
    
74.     }
    
75.  }
    
76.     return 0;
    
77. }

C语言开发Linux下web服务器(支持GET/POST,SSL,目录显示等)
http://blog.csdn.net/yueguanghaidao/article/details/8450938/