#include "stdafx.h"

#include "windows.h"

#include <Sensapi.h>

#include <iostream>

#include <Wininet.h>

#pragma comment(lib, "Sensapi.lib")

#pragma comment(lib, "Wininet.lib")

using namespace  std;

int _tmain(int argc, TCHAR* argv[], TCHAR* envp[])

{

    BOOL isConnect;

    DWORD dw;

    isConnect = ::IsNetworkAlive( &dw );

    while ()

    {

        if(isConnect)

            cout << "IsNetworkAlive连接" <<endl;

        else

            cout << "IsNetworkAlive未连接" <<endl;

        cout<< "---------------------------------" <<endl;

        DWORD dw2;

        BOOL ret = InternetGetConnectedState(&dw2, );

        if (ret)

            cout << "InternetGetConnectedState连接" <<endl;

        else

            cout << "InternetGetConnectedState未连接" <<endl;

        cout<< "**********************************"  <<endl;

        BOOL bConnected = InternetCheckConnection(_T("http://www.baidu.com"), FLAG_ICC_FORCE_CONNECTION, );

        if (bConnected)

            cout << "InternetCheckConnection连接" <<endl;

        else

            cout << "InternetCheckConnection未连接" <<endl;

        cout<< "%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%"  <<endl;

        //IsDestinationReachable(_T("http://www.google.com"), )    

        cout<<endl<<endl<<endl;

        Sleep();

    }

    getchar();

    return ;

}

// Connect to www.baidu.com.

      HINTERNET hConnect = InternetConnect(hSession,

                                    "www.baidu.com",

                                    INTERNET_INVALID_PORT_NUMBER,

                                    "",

                                    "",

                                    INTERNET_SERVICE_HTTP,

                                    ,

                                    );

      // Request the file /index.php from the server.

      HINTERNET hUrl = HttpOpenRequest(hConnect,

                                     "GET",

                                     "/index.php",

                                     HTTP_VERSION,

                                     NULL,

                                     ,

                                     INTERNET_FLAG_DONT_CACHE,

                                     );

      // Add request headers

      TCHAR szHeaders[] = "Accept: text/*\r\n";

      BOOL bAddHeaders = HttpAddRequestHeaders(hConnect,

                                  szHeaders,

                                  lstrlen(szHeaders),

                                  HTTP_ADDREQ_FLAG_ADD);

      // Send the request.

      BOOL bSendRequest = HttpSendRequest(hUrl, NULL, , , );

      if(hUrl == NULL)

      {

              printf("InternetOpenUrl Error......\n");

              InternetCloseHandle(hSession);

              return ;

      }

      BOOL bRet = HttpQueryInfo(hUrl, HTTP_QUERY_STATUS_CODE|HTTP_QUERY_FLAG_NUMBER, &dwStatusCode, &dwSizeOfStatusCode, NULL);

      if(!bRet)

      {

             printf("HttpQueryInfo Error......\n");

             return ;

      }

      // Key point

      if( == dwStatusCode)

      {

             InternetCloseHandle(hUrl) ;

             InternetCloseHandle(hSession) ;

             return ;

      }

//本机网络连接类型(成功)

#define  NET_TYPE_RAS_DIAL_UP_CONNECT_NET           0x01    //上网类型：采用RAS拨号连接上网    0x01

#define  NET_TYPE_LAN_CONNECT_NET                   0x02    //上网类型：采用网卡通过局域网上网 0x02

#define  NET_TYPE_PROXY_CONNECT_NET                 0x04    //上网类型：使用代理服务器上网     0x04

#define  NET_TYPE_RAS_INSTALL                       0x10    //RAS安装                        0x10  

//本机网络连接(失败)

#define  NET_TYPE_NO_CONNECT_NET                    0x41    //未连接到网络

#define  NET_STATE_VALID_CONNECT_NOCONNECT_NET      0x40    //可以联网，但当前不可用    0x40

#define  NET_STATE_MODEM_BUSY                       0x08    //调制解调器 繁忙           0x08

#define  NET_STATE_SYSTEM_OFFLINE_MODE              0x20    //系统脱机模式              0x20  

CheckNet()

{

if(!InternetGetConnectedState(&dwOnline, ))

    {

        if (dwOnline & INTERNET_CONNECTION_CONFIGURED )

        {

            return NET_STATE_VALID_CONNECT_NOCONNECT_NET;

        }

        if (dwOnline & INTERNET_CONNECTION_MODEM_BUSY)

        {

            return NET_STATE_MODEM_BUSY;

        }

        if (dwOnline & INTERNET_CONNECTION_OFFLINE)

        {

            return NET_STATE_SYSTEM_OFFLINE_MODE;

        }  

        return NET_TYPE_NO_CONNECT_NET;

    }  

    if ( dwOnline& INTERNET_CONNECTION_MODEM )      //上网类型：采用RAS拨号连接上网

    {

        return  NET_TYPE_RAS_DIAL_UP_CONNECT_NET;

    }  

    else if ( dwOnline&INTERNET_CONNECTION_LAN  )  //上网类型：采用网卡通过局域网上网

    {

        return NET_TYPE_LAN_CONNECT_NET;

    }  

    else if ( dwOnline& INTERNET_CONNECTION_PROXY) //在线：代理

    {

        return NET_TYPE_PROXY_CONNECT_NET;

    }  

    else if ( dwOnline&INTERNET_CONNECTION_MODEM_BUSY ) //MODEM被其他非INTERNET连接占用

    {

        return NET_TYPE_RAS_INSTALL;

    }

}