WinCE 下实现 ping 功能

需要包括的头文件与库文件：

#include "Winsock2.h"  
// PING  
#include "Ipexport.h"  
#include "Icmpapi.h"  
#include "winsock.h"  
  
extern HWND ghMainWnd;  
  
#pragma comment (lib, "Iphlpapi.lib")   
#pragma comment (lib, "Ws2.lib")   

源代码如下：

int Ping(TCHAR *Address , int iTtl , int iWaitTime , TCHAR *szName , int *prtt)  
{  
    IPAddr                ipAddress ;  
    IP_OPTION_INFORMATION ipInfo ;  
    ICMP_ECHO_REPLY       icmpEcho;   
    HANDLE                hFile;      
    char                  strHost  [ MAX_PATH ] ;  
    TCHAR                 szPCName [ MAX_PATH ]  = { TEXT( "" ) } ;  
    int                   iRet = -1 ;  
    struct in_addr iaDest;      // Internet address structure  
    LPHOSTENT pHost;            // Pointer to host entry structure  
  
    RETAILMSG(1,(L"TICK: %d - [TCP Client]Enter Ping......
",GetTickCount() / 1000));  
  
    _tcscpy( szName , TEXT("") );  
    WideCharToMultiByte( CP_ACP, 0, Address , -1, strHost, sizeof( strHost ), NULL, FALSE );  
    ipAddress = inet_addr(strHost);  
    iaDest.s_addr = inet_addr(strHost);  
    if (iaDest.s_addr == INADDR_NONE)  
    {  
        pHost = gethostbyname(strHost);  
        if( pHost )  
        {  
            char *pIP ;  
            iaDest.S_un.S_addr = *(DWORD *)(*pHost->h_addr_list) ;  
            pIP = inet_ntoa( iaDest ) ;  
            if( strlen( pIP ) )  
                MultiByteToWideChar( CP_ACP, 0, pIP , -1, szPCName, sizeof( szPCName ) );  
            if( _tcslen( szPCName ) )  
                _tcscpy( szName , szPCName );  
        }  
    }  
    else  
    {  
        pHost = gethostbyaddr((const char *)&iaDest,   
            sizeof(struct in_addr), AF_INET);  
        if( pHost )  
        {  
            MultiByteToWideChar( CP_ACP, 0, pHost->h_name , -1, szPCName, sizeof( szPCName ) );  
            if( _tcslen( szPCName ) )  
                _tcscpy( szName , szPCName );  
        }  
    }  
    if( pHost )  
        ipAddress = *(DWORD *)(*pHost->h_addr_list) ;  
    if (ipAddress != INADDR_NONE)  
    {     
        iRet = 0 ;  
        hFile = IcmpCreateFile();  
  
        // Set some reasonable default values  
        ipInfo.Ttl   = iTtl ;  
        ipInfo.Tos   = 0;  
        ipInfo.Flags = 0;  
        ipInfo.OptionsSize = 0 ;  
        ipInfo.OptionsData = NULL ;  
        icmpEcho.Status    = IP_REQ_TIMED_OUT/*IP_SUCCESS*/ ;  
        IcmpSendEcho( hFile , ipAddress , NULL , 0 ,  
            (PIP_OPTION_INFORMATION)&ipInfo,  
            &icmpEcho , sizeof(ICMP_ECHO_REPLY) , iWaitTime ) ;   
        IcmpCloseHandle(hFile) ;  
        if ( icmpEcho.Status == IP_SUCCESS )  
            iRet = 1 ;  
  
        *prtt = icmpEcho.RoundTripTime ;  
    }  
    return iRet ;  
}  

调用示例：

static LPTSTR strIpAddr[] =   
{  
    L"202.96.209.5",    // 上海 DNS  
    L"220.181.6.18",    // 百度  
    L"202.100.4.15",    // 西安 DNS  
};  

TCHAR tcName[MAX_PATH] = {0};  
int iPtt = 0;  
int iPingRet = Ping(strIpAddr[giPingIndex],128,3000,tcName,&iPtt);  //ping tmc server  
  
if(iPingRet == 1)  
{  
    RETAILMSG(1, (TEXT("TICK: %d - Ping IP: %s Success.
"),GetTickCount() / 1000, strIpAddr[giPingIndex]));  
}  
else  
{  
}