vc ++ UrlDownloadToFile在密码保护的代理中不起作用 [英] vc++ UrlDownloadToFile not working in password proteted proxy
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问题描述
我正在尝试运行UrlDownloadToFile()
Hi I am trying to run UrlDownloadToFile()
CBSCallbackImplPX callback;
::URLDownloadToFileA(NULL, "http://www.codeproject.com/KB/system/keyboard.aspx" ,"c:\\test\\a.html",NULL,&callback);
哪里
Where
class CBSCallbackImplPX : public IBindStatusCallback
即使使用proxy，它也可以正常工作，因为它使用IE的凭据.
但是今天，当我在受密码保护的代理下尝试相同的代码时，它会返回
It is working fine even in proxy.as it uses IE''s credential.
But today when I am trying the same code under password protected proxy it is returning
E_ACCESSDENIED.
我研究了此链接
http://www.ureader.com/msg/1510234.aspx [
.
I studied this link
http://www.ureader.com/msg/1510234.aspx[^]
and came to know about
IAuthenticate接口.
但无法实现.
以下是我的回拨代码
Interface.
but not able to implement.
below is my call back code
class CBSCallbackImplPX : public IBindStatusCallback //,IServiceProvider,TIAuthenticate
{
public:
CBSCallbackImplPX();
~CBSCallbackImplPX();
//TIAuthenticate class taken from http://www.ureader.com/msg/1510234.aspx
//TIAuthenticate myAuthenticate;
CString m_csData;
DWORD m_dwSize;
int nTitmeOut;
// IUnknown methods
STDMETHOD(QueryInterface)(REFIID riid, void **ppvObject);
STDMETHOD_(ULONG, AddRef)();
STDMETHOD_(ULONG, Release)();
// IBindStatusCallback methods
STDMETHOD(OnStartBinding)(DWORD, IBinding *);
STDMETHOD(GetPriority)(LONG *);
STDMETHOD(OnLowResource)(DWORD);
STDMETHOD(OnProgress)(ULONG ulProgress,
ULONG ulProgressMax,
ULONG ulStatusCode,
LPCWSTR szStatusText);
STDMETHOD(OnStopBinding)(HRESULT, LPCWSTR);
STDMETHOD(GetBindInfo)(DWORD *, BINDINFO *);
STDMETHOD(OnDataAvailable)(DWORD, DWORD, FORMATETC *, STGMEDIUM *);
STDMETHOD(OnObjectAvailable)(REFIID, IUnknown *);
// HRESULT STDMETHODCALLTYPE QueryService( REFGUID guidService, REFIID riid, void __RPC_FAR *__RPC_FAR *ppvObject) ;
protected:
ULONG m_ulObjRefCount;
clock_t m_startDownload,m_endDownload;
};
// BSCallbackImpl.cpp: implementation of the CBSCallbackImplPX class.
//
//////////////////////////////////////////////////////////////////////
#include "stdafx.h"
#include "BSCallbackImplPX.h"
#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif
//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
//--------------------------------------------------------------------
CBSCallbackImplPX::CBSCallbackImplPX()
{
nTitmeOut=10;
m_ulObjRefCount = 1;
m_csData="";
m_dwSize=0;
m_startDownload,m_endDownload=0;
}
//--------------------------------------------------------------------
CBSCallbackImplPX::~CBSCallbackImplPX()
{
}
//--------------------------------------------------------------------
// IUnknown
STDMETHODIMP CBSCallbackImplPX::QueryInterface(REFIID riid, void **ppvObject)
{
*ppvObject = NULL;
// IUnknown
if (::IsEqualIID(riid, __uuidof(IUnknown)))
{
//TRACE(_T("IUnknown::QueryInterface(IUnknown)\n"));
*ppvObject = this;
}
// IBindStatusCallback
else if (::IsEqualIID(riid, __uuidof(IAuthenticate)))
{
//TRACE(_T("IUnknown::QueryInterface(IBindStatusCallback)\n"));
AfxMessageBox("found something");//can I implement the callback here??
//*ppvObject = /*static_cast(*/this/*)*/;
}
if (::IsEqualIID(riid, __uuidof(IUnknown)))
{}
if (*ppvObject)
{
this->AddRef();
/*(*reinterpret_cast(ppvObject))->AddRef();*/ //Ram:As unicode casting.
return S_OK;
}
return E_NOINTERFACE;
}
//--------------------------------------------------------------------
STDMETHODIMP_(ULONG) CBSCallbackImplPX::AddRef()
{
//TRACE(_T("IUnknown::AddRef\n"));
return ++m_ulObjRefCount;
}
//--------------------------------------------------------------------
STDMETHODIMP_(ULONG) CBSCallbackImplPX::Release()
{
//TRACE(_T("IUnknown::Release\n"));
return --m_ulObjRefCount;
}
//--------------------------------------------------------------------
// IBindStatusCallback
STDMETHODIMP CBSCallbackImplPX::OnStartBinding(DWORD d, IBinding *ib)
{
//ib=&myAuthenticate;
//TRACE(_T("IBindStatusCallback::OnStartBinding\n"));
m_startDownload=clock();
return S_OK;
}
//--------------------------------------------------------------------
STDMETHODIMP CBSCallbackImplPX::GetPriority(LONG *)
{
//TRACE(_T("IBindStatusCallback::GetPriority\n"));
return E_NOTIMPL;
}
//--------------------------------------------------------------------
STDMETHODIMP CBSCallbackImplPX::OnLowResource(DWORD)
{
//TRACE(_T("IBindStatusCallback::OnLowResource\n"));
return S_OK;
}
//--------------------------------------------------------------------
STDMETHODIMP CBSCallbackImplPX::OnProgress(ULONG ulProgress,
ULONG ulProgressMax,
ULONG ulStatusCode,
LPCWSTR szStatusText)
{
m_endDownload=clock();
int nTimeTakenForThisDownload=0;
nTimeTakenForThisDownload=((int)( m_endDownload - m_startDownload)/CLOCKS_PER_SEC) ;
if(nTimeTakenForThisDownload>=nTitmeOut)
{
////CMTLog::WriteLogMT("Download cancelled by client");
return E_ABORT; // Download canceled by the client
}
return S_OK;
}
//--------------------------------------------------------------------
STDMETHODIMP CBSCallbackImplPX::OnStopBinding(HRESULT, LPCWSTR)
{
//TRACE(_T("IBindStatusCallback::OnStopBinding\n"));
return S_OK;
}
//--------------------------------------------------------------------
STDMETHODIMP CBSCallbackImplPX::GetBindInfo(DWORD *d, BINDINFO * b)
{
//b->pUnk = &myAuthenticate;
//TRACE(_T("IBindStatusCallback::GetBindInfo\n"));
return S_OK;
}
//--------------------------------------------------------------------
STDMETHODIMP CBSCallbackImplPX::OnDataAvailable(DWORD dww, DWORD dwSize,
FORMATETC *fww, STGMEDIUM *stgmed )
{
//TRACE(_T("IBindStatusCallback::OnDataAvailable %ld\n"), dwSize );
// //CMTLog::WriteLogMT2("IBindStatusCallback::OnDataAvailable %ld ",dwSize);
if ( stgmed ) {
if ( stgmed->pstm ) {
ULONG bytesRead = 0;
dwSize=dwSize-m_dwSize;
BYTE *data = new BYTE[ dwSize + 1 ];
//*data=(char)NULL;
HRESULT hRes = stgmed->pstm->Read( data, dwSize, &bytesRead );
data[dwSize] = ''\0'';
m_dwSize+=bytesRead;
m_csData +=(char *)data;
/*
BYTE *data = (BYTE*)m_csData.GetBuffer( m_csData.GetLength() + dwSize + 1 );
HRESULT hRes = stgmed->pstm->Read( data, dwSize, &bytesRead );
m_dwSize+=bytesRead;
m_csData.ReleaseBuffer();
*/
delete data;
data=NULL;
return hRes;
}
}
return S_OK;
}
//--------------------------------------------------------------------
STDMETHODIMP CBSCallbackImplPX::OnObjectAvailable(REFIID, IUnknown *)
{
//TRACE(_T("IBindStatusCallback::OnObjectAvailable\n"));
return S_OK;
}
//--------------------------------------------------------------------
请帮助:(
please help :(
推荐答案
最终找到了出路
ultimately got one way out
URLDownloadToFile(NULL,"http://prodex:prodex123@www.codeproject.com/KB/system/keyboard.aspx","c:\\test\\a.html",NULL,NULL);
它的工作:)
仍然无法通过回调来完成.
请为此发送一些代码段.
its working :)
still not able to do through callback.
please send some code snippet for that.
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