Hello,



I'm writing proxy-like implementation of IE Pluggable Protocol Handler (for
http, ftp), I have implemented IInternetProtocol and IInternetProtocolSink
with simple logic, just creating through CoCreateClass instance of native
protocol handler (reading its CLSID from registry) and passing all calls to
it.



But I have strange problems with encoding. When I try to load page without
META tag specified encoding in page body, however it is specified in HTTP
headers (Content-Encoding header) Explorer resets page encoding to my system
default codepage. When my pluggable protocol handler is switched off IE
correctly gets codepage from header.



For example, if I try to load pages encoded in utf-8, but without tag <meta
http-equiv="content-type" content="text/html; charset=UTF-8">, then I see
page in my default encoding (windows-1251).



In debugger I see:



STDMETHODIMP MyInternetProtocolImpl::Start(:, IInternetProtocolSink
__RPC_FAR *pOIProtSink, IInternetBindInfo __RPC_FAR *pOIBindInfo :)

{

BINDINFO biInfo;

memset(&biInfo,0,sizeof BINDINFO);

biInfo.cbSize = sizeof BINDINFO;

DWORD dwInfo;

pOIBindInfo->GetBindInfo(&dwInfo,&biInfo);



/// biInfo.dwCodePage == 1251. // from system defaults

:

// create our own instance of MyInternetProtocolSinkImpl and
pass pOIProtSink to it

}



And next point:



HRESULT STDMETHODCALLTYPE MyInternetProtocolSinkImpl::ReportProgress(ULONG
ulStatusCode, LPCWSTR lzStatusText )

{

:

if(ulStatusCode == BINDSTATUS_MIMETYPEAVAILABLE)

{

/// in this point lzStatusText == "text/html;
codepage=UTF-8" it's right!

return m_ProtocolSink->ReportProgress( ulStatusCode,
szStatusText );

/// m_ProtocolSink - is original
IInternetProtocolSink that was passed from Start()

}

}



After all IE seems to lose original Content-Type header. Is there any way to
correctly pass this header to underlying Protocol Handler?



Thanks for advice.