http文件传输

//连接服务器，下载文件
bool PostData(CString strUrl, const CString &strPara, CString &strContent)
{
    bool bRet = false;
    CString strServer, strObject, strHeader, strRet;
    unsigned short nPort;
    DWORD dwServiceType;
    if(!AfxParseURL(strUrl, dwServiceType, strServer, strObject, nPort))//不是有效有网络地址！
        return false;
 
    CInternetSession sess;//Create session
    CHttpFile* pFile = NULL;
    CHttpConnection *pServer = sess.GetHttpConnection(strServer, nPort); 
    if(pServer == NULL)//连接服务器失败！
        return false;
 
    pFile = pServer->OpenRequest(CHttpConnection::HTTP_VERB_POST,strObject,NULL,1,NULL,NULL,INTERNET_FLAG_EXISTING_CONNECT); 
    if(pFile == NULL)/双击查看原图不到网络地址
        return false;
 
    pFile -> AddRequestHeaders("Content-Type: application/x-www-form-urlencoded"); 
    pFile -> AddRequestHeaders("Accept: */*"); 
    pFile -> SendRequest(NULL,0,(LPTSTR)(LPCTSTR)strPara, strPara.GetLength()); 
 
    CString strSentence;
    DWORD dwStatus;
    DWORD dwBuffLen = sizeof(dwStatus);
    BOOL bSuccess = pFile->QueryInfo(
        HTTP_QUERY_STATUS_CODE|HTTP_QUERY_FLAG_NUMBER,
        &dwStatus, &dwBuffLen);