winhttp简单用法（3）--post

#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"POST",L"login.html",L"HTTP/1.1", WINHTTP_NO_REFERER,WINHTTP_DEFAULT_ACCEPT_TYPES,0);

    }

    

    

    

    LPCWSTR header=L"Content-type: application/x-www-form-urlencoded/r/n";



    SIZE_T len = lstrlenW(header);



    WinHttpAddRequestHeaders(hRequest,header,DWORD(len), WINHTTP_ADDREQ_FLAG_ADD);



    if(hRequest)

    {



    std::string data="name=host&sign=xx11sad";



    const void *ss=(const char *)data.c_str();



    bResults=WinHttpSendRequest(hRequest, 0, 0,const_cast<void *>(ss),data.length(), data.length(), 0 );



        ////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");





}