使用Code::blocks在windows下写网络程序

使用Code::blocks在windows下写网络程序

作者

He YiJun – storysnail<at>hotmail.com

版权

转载请保留本声明!

本文档包含的原创代码根据General Public License,v3 发布
GPLv3 许可证的副本可以在这里获得:http://www.gnu.org/licenses/gpl.html

本文档根据GNU
Free Documentation License 1.3发布
GFDL1.3许可证的副本可以在这里获得:http://www.gnu.org/licenses/gfdl.html

文中所引用的软件版权详见各软件版权具体声明，文中所提及的所有商标均为各自商标所有人的财产。
作者在此向所有提供过帮助和支持的朋友表示感谢，此致!

更新

2014-11-10	修改版权,增加linux版示例程序 本文已经停止更新，网络开发请参阅msys2开发环境配置

前言:

这是一个用来读取指定网页内容的程序。当前还非常原始，但已经能完成基本的功能。未来我会在这个程序的基础上不断扩充，让这个程序变成一个可用的更新检测程序！

一：windows下用Code::blocks开发网络程序

1:
Code::blocks 中新建一个工程
2:
建完工程后点击Project菜单，选择Build
options...
3:
选择Linker
settings标签页，在Other
linker options:中添加：

-lwsock32

二 源代码

1. /***********************************************************************
2. * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ *
3. Eabc-version-verfy.c
4. Develop Team : ls
5. Team Leader : He YiJun (storysnail<at>gmail.com)
6. Main Programmer : He YiJun
7. Programmer : Ling Ying
8. Program comments : Ling Ying
9. Dict Editor : Yang QiuXi
10. Documents : Ling Ying、 Yang QiuXi
11. Art Designer : He YiJun
12. License : GPLv3
13. Last Update : 2013-02-25
14. * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ *
15. *************************************************************************/
16. #include <windows.h> // 新增 windows.h
17. #include <winsock2.h>
18. //#pragma comment(lib, "ws2_32.lib") // For VS
19. #include <tchar.h>
20. #include <stdio.h>
21. #include <stdlib.h>
22. #include <malloc.h>
23. #include <io.h>
24. #ifdef _MT
25. #include <process.h>
26. #endif
27. /* DWORD_PTR (pointer precision unsigned integer) is used for integers
28. * that are converted to handles or pointers
29. * This eliminates Win64 warnings regarding conversion between
30. * 32 and 64-bit data, as HANDLEs and pointers are 64 bits in
31. * Win64 (See Chapter 16). This is enable only if _Wp64 is defined.
32. */
33. #if !defined(_Wp64)
34. #define DWORD_PTR DWORD
35. #define LONG_PTR LONG
36. #define INT_PTR INT
37. #endif
38. #define MAX_RQRS_LEN 0x1000 //4096
39. /* Required for sockets */
40. #define SERVER_PORT 80
41. typedef struct {
42. LONG32 rsLen;
43. BYTE record [MAX_RQRS_LEN];
44. } RESPONSE;
45. typedef struct {
46. LONG32 rqLen;
47. BYTE record [MAX_RQRS_LEN];
48. } REQUEST;
49. #define RQ_SIZE sizeof (REQUEST)
50. #define RQ_HEADER_LEN RQ_SIZE-MAX_RQRS_LEN
51. #define RS_SIZE sizeof (RESPONSE)
52. #define RS_HEADER_LEN RS_SIZE-MAX_RQRS_LEN
53. static BOOL SendRequest (REQUEST *, SOCKET);
54. static BOOL ReceiveResponse (RESPONSE *, SOCKET);
55. static VOID PrintError (LPCTSTR , DWORD , BOOL);
56. struct sockaddr_in clientSAddr;
57. int _tmain (int argc, LPSTR argv[])
58. {
59. SOCKET clientSock = INVALID_SOCKET;
60. REQUEST request;
61. RESPONSE response;
62. WSADATA WSStartData; /* Socket library data structure */
63. DWORD conVal;
64. while (1) {
65. _tprintf (_T("%s"), _T("\nEnter Command: "));
66. _fgetts ((char *)request.record, MAX_RQRS_LEN-1, stdin);
67. /* Get rid of the new line at the end */
68. /* Messages use 8-bit characters */
69. request.record[strlen((char *)request.record)-1] = '\0';
70. if (strcmp ((char *)request.record, "$Quit") == 0)
71. break;
72. if (strncmp ((char *)request.record, "GET",3) == 0)
73. request.record[strlen((char *)request.record)] = '\n';
74. /* Initialize the WS library. Ver 2.2 */
75. if (WSAStartup (MAKEWORD (2, 2), &WSStartData) != 0)
76. PrintError (_T("Cannot support sockets"), 1, TRUE);
77. /* Connect to the server */
78. /* Follow the standard client socket/connect sequence */
79. clientSock = socket(AF_INET, SOCK_STREAM, 0);
80. if (clientSock == INVALID_SOCKET)
81. PrintError (_T("Failed client socket() call"), 2, TRUE);
82. memset (&clientSAddr, 0, sizeof(clientSAddr));
83. clientSAddr.sin_family = AF_INET;
84. //clientSAddr.sin_addr.s_addr = htonl(inet_addr ("121.127.248.96"));
85. clientSAddr.sin_addr.s_addr = inet_addr ("121.127.248.96");
86. clientSAddr.sin_port = htons(SERVER_PORT);
87. conVal = connect (clientSock, (struct sockaddr *)&clientSAddr, sizeof(clientSAddr));
88. if (conVal == SOCKET_ERROR) PrintError (_T("Failed client connect() call)"), 3, TRUE);
89. SendRequest (&request, clientSock);
90. ReceiveResponse (&response, clientSock);
91. shutdown (clientSock, SD_BOTH); /* Disallow sends and receives */
92. closesocket (clientSock);
93. WSACleanup();
94. close (clientSock);
95. }
96. _tprintf (_T("\n****Leaving client\n"));
97. return 0;
98. }
99. // GET http://www.7fane.com/test.html
100. BOOL SendRequest (REQUEST *pRequest, SOCKET sd)
101. {
102. /* Send the the request to the server on socket sd */
103. BOOL disconnect = FALSE;
104. LONG32 nRemainSend, nXfer;
105. LPBYTE pBuffer;
106. //char target[]="GET http://www.7fane.com/test.html\n";
107. pRequest->rqLen = (DWORD)(strlen ((char *)pRequest->record) + 1);
108. nRemainSend = pRequest->rqLen;
109. pBuffer = (LPBYTE)pRequest->record;
110. _tprintf (_T("%s%s"), _T("\nNow SendRequestMessage: "),pBuffer);
111. while (nRemainSend > 0 && !disconnect) {
112. nXfer = send (sd, (char *)pBuffer, nRemainSend, 0);
113. //nXfer = send (sd, target, strlen(target), 0);
114. if (nXfer == SOCKET_ERROR) PrintError (_T("client send() failed"), 5, TRUE);
115. disconnect = (nXfer == 0);
116. nRemainSend -=nXfer;
117. pBuffer += nXfer;
118. _tprintf (_T("%s%d"), _T("\nSend btyes: "),nXfer);
119. //_tprintf (_T("%s%s"), _T("\nSend content: "),target);
120. _tprintf (_T("%s%s"), _T("\nSend content: "),pRequest->record);
121. }
122. return disconnect;
123. }
124. BOOL ReceiveResponse (RESPONSE *pResponse, SOCKET sd)
125. {
126. BOOL disconnect = FALSE;
127. LONG32 nRemainRecv, nXfer;
128. LPBYTE pBuffer;
129. _tprintf (_T("%s"), _T("\nNow ReceiveResponseMessage! "));
130. while(!disconnect) {
131. /* Read each response and send it to std out.*/
132. memset (pResponse->record, 0, MAX_RQRS_LEN);
133. nRemainRecv = MAX_RQRS_LEN;
134. pBuffer = (LPBYTE)pResponse->record;
135. while (nRemainRecv > 0 && !disconnect) {
136. nXfer = recv (sd, (char *)pBuffer, nRemainRecv, 0);
137. if (nXfer == SOCKET_ERROR) PrintError (_T("client response recv() failed"), 7, TRUE);
138. disconnect = (nXfer == 0);
139. nRemainRecv -=nXfer;
140. pBuffer += nXfer;
141. if(!disconnect) {
142. _tprintf (_T("%s[%d]"), _T("\nReceive bytes: "),nXfer);
143. _tprintf (_T("%s\n%s"), _T("\nReceive content: "),pResponse->record);
144. }
145. }
146. }
147. return disconnect;
148. }
149. VOID PrintError (LPCTSTR userMessage, DWORD exitCode, BOOL printErrorMessage)
150. {
151. DWORD eMsgLen, errNum = GetLastError ();
152. LPTSTR lpvSysMsg;
153. _ftprintf (stderr, _T("%s\n"), userMessage);
154. if (printErrorMessage) {
155. eMsgLen = FormatMessage (FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
156. NULL, errNum, MAKELANGID (LANG_NEUTRAL, SUBLANG_DEFAULT),
157. (LPTSTR) &lpvSysMsg, 0, NULL);
158. if (eMsgLen > 0)
159. {
160. _ftprintf (stderr, _T("%s\n"), lpvSysMsg);
161. }
162. else
163. {
164. _ftprintf (stderr, _T("Last Error Number; %d.\n"), (int)errNum);
165. }
166. if (lpvSysMsg != NULL) LocalFree (lpvSysMsg); /* Explained in Chapter 5. */
167. }
168. if (exitCode > 0)
169. ExitProcess (exitCode);
170. return;
171. }

三 运行截图

程序开始运行

输入命令和网址

注意下面截图的网址是我和泠在很久以前建的网站地址，目前已经失效了，所以你应该用一个有效的网址替换！

程序得到的网页内容

退出程序

下面是该程序的linux版本,这段程序是《使用C4droid和botbrew在andriod手机上编程 》这篇文章的两个示例程序之一,不过《使用C4droid和botbrew在andriod手机上编程 》这篇文章现在已经放弃维护了！

 /********************************************************************************
 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ *
     get-www
                                main.c

     Develop Team     :    ls
     Main Programmer  :    He YiJun  (storysnail<at>gmail.com)
     License          :    GPLv3
     Last Update      :    2013-03-03
 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ *
 *********************************************************************************/
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
 #include <stdarg.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
 #include <netdb.h>

 static int gw_connect(char *domain,int port)
 {
   int sock_sd;
   int i;
   struct hostent *site_dns;
   struct sockaddr_in s_addr;
   site_dns = gethostbyname(domain);
   if(site_dns == NULL) {
     printf("gethostbyname error!\n");
     return -;
   }
   printf("default ip:  %s\n",inet_ntoa(*((struct in_addr *)site_dns->h_addr)));
   for(i=; i< site_dns->h_length/sizeof(int); i++) {
     printf("IP:%d:%s\n",i+,inet_ntoa(*((struct in_addr *)site_dns->h_addr_list[i])));
   }
   sock_sd = socket(AF_INET,SOCK_STREAM,);
   if(sock_sd < ) {
     printf ("socket error!");
     return -;
   }
   memset(&s_addr,,sizeof(struct sockaddr_in));
   memcpy(&s_addr.sin_addr,site_dns ->h_addr_list[],site_dns->h_length);
   s_addr.sin_family = AF_INET;
   s_addr.sin_port = htons(port);
   printf("s_addr ip:  %s",inet_ntoa(*((struct in_addr *)&s_addr.sin_addr)));
   return (connect(sock_sd,(struct sockaddr *)&s_addr,sizeof(struct sockaddr))  <  ? - : sock_sd);
 }

 static int gw_send(int sock_sd,char *fmt,...)
 {
   char buf [];
   va_list argptr;
   va_start(argptr,fmt);
   vsprintf(buf,fmt,argptr);
   va_end(argptr);
   printf("Send:\n%s\n",buf);
   return send(sock_sd,buf,strlen(buf),);
 }

 void main(int argc,char **argv)
 {
   int sock_sd;
   char rBuf[];
   sock_sd = gw_connect("www.7fane.com",);
   if(sock_sd < )  {
     printf("connect error!\n");
     return;
   }
   //注意：该网站只用于个人测试，在2013年11月末到期，
   //如果你在之后的日期使用，请使用其它网页地址
   gw_send(sock_sd,"GET http://www.7fane.com/test.html\n");
   gw_send(sock_sd,"%c",);
   while(read(sock_sd,rBuf,) > )
     printf("%c",rBuf[]);
   close(sock_sd);
   return;
 }