WinCE 下实现 ping 功能

需要包括的头文件与库文件：

 1 #include "Winsock2.h"
 2 // PING
 3 #include "Ipexport.h"
 4 #include "Icmpapi.h"
 5 #include "winsock.h"
 6
 7 extern HWND ghMainWnd;
 8
 9 #pragma comment (lib, "Iphlpapi.lib")
10 #pragma comment (lib, "Ws2.lib")   

源代码如下：

 1 int Ping(TCHAR *Address , int iTtl , int iWaitTime , TCHAR *szName , int *prtt)
 2 {
 3     IPAddr                ipAddress ;
 4     IP_OPTION_INFORMATION ipInfo ;
 5     ICMP_ECHO_REPLY       icmpEcho;
 6     HANDLE                hFile;
 7     char                  strHost  [ MAX_PATH ] ;
 8     TCHAR                 szPCName [ MAX_PATH ]  = { TEXT( "" ) } ;
 9     int                   iRet = -1 ;
10     struct in_addr iaDest;      // Internet address structure
11     LPHOSTENT pHost;            // Pointer to host entry structure
12
13     RETAILMSG(1,(L"TICK: %d - [TCP Client]Enter Ping......\r\n",GetTickCount() / 1000));
14
15     _tcscpy( szName , TEXT("") );
16     WideCharToMultiByte( CP_ACP, 0, Address , -1, strHost, sizeof( strHost ), NULL, FALSE );
17     ipAddress = inet_addr(strHost);
18     iaDest.s_addr = inet_addr(strHost);
19     if (iaDest.s_addr == INADDR_NONE)
20     {
21         pHost = gethostbyname(strHost);
22         if( pHost )
23         {
24             char *pIP ;
25             iaDest.S_un.S_addr = *(DWORD *)(*pHost->h_addr_list) ;
26             pIP = inet_ntoa( iaDest ) ;
27             if( strlen( pIP ) )
28                 MultiByteToWideChar( CP_ACP, 0, pIP , -1, szPCName, sizeof( szPCName ) );
29             if( _tcslen( szPCName ) )
30                 _tcscpy( szName , szPCName );
31         }
32     }
33     else
34     {
35         pHost = gethostbyaddr((const char *)&iaDest,
36             sizeof(struct in_addr), AF_INET);
37         if( pHost )
38         {
39             MultiByteToWideChar( CP_ACP, 0, pHost->h_name , -1, szPCName, sizeof( szPCName ) );
40             if( _tcslen( szPCName ) )
41                 _tcscpy( szName , szPCName );
42         }
43     }
44     if( pHost )
45         ipAddress = *(DWORD *)(*pHost->h_addr_list) ;
46     if (ipAddress != INADDR_NONE)
47     {
48         iRet = 0 ;
49         hFile = IcmpCreateFile();
50
51         // Set some reasonable default values
52         ipInfo.Ttl   = iTtl ;
53         ipInfo.Tos   = 0;
54         ipInfo.Flags = 0;
55         ipInfo.OptionsSize = 0 ;
56         ipInfo.OptionsData = NULL ;
57         icmpEcho.Status    = IP_REQ_TIMED_OUT/*IP_SUCCESS*/ ;
58         IcmpSendEcho( hFile , ipAddress , NULL , 0 ,
59             (PIP_OPTION_INFORMATION)&ipInfo,
60             &icmpEcho , sizeof(ICMP_ECHO_REPLY) , iWaitTime ) ;
61         IcmpCloseHandle(hFile) ;
62         if ( icmpEcho.Status == IP_SUCCESS )
63             iRet = 1 ;
64
65         *prtt = icmpEcho.RoundTripTime ;
66     }
67     return iRet ;
68 }  

调用示例：

 1 static LPTSTR strIpAddr[] =
 2 {
 3     L"202.96.209.5",    // 上海 DNS
 4     L"220.181.6.18",    // 百度
 5     L"202.100.4.15",    // 西安 DNS
 6 };
 7
 8 TCHAR tcName[MAX_PATH] = {0};
 9 int iPtt = 0;
10 int iPingRet = Ping(strIpAddr[giPingIndex],128,3000,tcName,&iPtt);  //ping tmc server
11
12 if(iPingRet == 1)
13 {
14     RETAILMSG(1, (TEXT("TICK: %d - Ping IP: %s Success.\r\n"),GetTickCount() / 1000, strIpAddr[giPingIndex]));
15 }
16 else
17 {
18 }