winhttp简单用法（2）--get

#include <string>

#include <iostream>

#include <windows.h>

#include <winhttp.h> 

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

#pragma comment(lib,"user32.lib")





void main()

{



	

    DWORD dwSize = 0;

	DWORD dwDownloaded = 0;

	LPSTR pszOutBuffer = NULL;

	HINTERNET  hSession = NULL,

			   hConnect = NULL,

			   hRequest = NULL;



	BOOL  bResults = FALSE;



	hSession=WinHttpOpen(L"User Agent",WINHTTP_ACCESS_TYPE_DEFAULT_PROXY,WINHTTP_NO_PROXY_NAME,WINHTTP_NO_PROXY_BYPASS,0);



	if(hSession)

	{

		hConnect=WinHttpConnect(hSession,L"192.168.0.8",INTERNET_DEFAULT_HTTP_PORT,0);

	}



	if(hConnect)

	{

		hRequest=WinHttpOpenRequest(hConnect, L"GET",L"login.html",L"HTTP/1.1", WINHTTP_NO_REFERER,WINHTTP_DEFAULT_ACCEPT_TYPES,0);

	}



	if(hRequest)

	{

		bResults=WinHttpSendRequest(hRequest,WINHTTP_NO_ADDITIONAL_HEADERS, 0,WINHTTP_NO_REQUEST_DATA, 0, 0, 0 );

	}



	if(bResults)

	{

		bResults=WinHttpReceiveResponse(hRequest,NULL);



	}

	

	if(bResults)

	{

		do

		{

			// Check for available data.



			 dwSize = 0;



			 if (!WinHttpQueryDataAvailable( hRequest, &dwSize))

			 {

				 printf( "Error %u in WinHttpQueryDataAvailable.\n",GetLastError());



				 break;

			 }



			 if (!dwSize)

				 break;



			  pszOutBuffer = new char[dwSize+1];



			  if (!pszOutBuffer)

			  {

				   printf("Out of memory\n");

				break;

			  }



			   ZeroMemory(pszOutBuffer, dwSize+1);



			   if (!WinHttpReadData( hRequest, (LPVOID)pszOutBuffer,  dwSize, &dwDownloaded))

			   {

				     printf( "Error %u in WinHttpReadData.\n", GetLastError());

			   }

			   else

			   {

				   printf("%s", pszOutBuffer);

			   }



			   delete [] pszOutBuffer;



			   if (!dwDownloaded)

				   break;



		} while (dwSize > 0);

	}

	

	



    if (hRequest) WinHttpCloseHandle(hRequest);

    if (hConnect) WinHttpCloseHandle(hConnect);

    if (hSession) WinHttpCloseHandle(hSession);



	



	 system("pause");





}