关于HttpQueryInfo的问题

[Toxic_Obsidian]

代码（查错部分已略去）

        HINTERNET hInt = InternetOpenA( UA , INTERNET_OPEN_TYPE_DIRECT , NULL , NULL , 0 );
	if( hInt == NULL ){
		return 1;
	}
	HINTERNET hConn = InternetConnect( hInt , "dl.hdslb.com" , INTERNET_DEFAULT_HTTPS_PORT , NULL , NULL , INTERNET_SERVICE_HTTP , 0 , 0 );
	if( hConn == NULL ){
        return 1;
	}
	// https://dl.hdslb.com/mobile/latest/iBiliPlayer-bili.apk
    HINTERNET hTar = HttpOpenRequestA( hConn , "GET" , "/mobile/latest/iBiliPlayer-bili.apk" , "HTTP/1.1" , NULL , NULL , INTERNET_FLAG_RELOAD , 0 );
    if( hTar == NULL ){
        return 1;
    }
    if( TRUE != HttpSendRequestA( hTar , NULL , 0 , NULL , 0 ) ){
        return 1;
    }
    CHAR dwContLength1[200];
    ZeroMemory( dwContLength1 , 200 );
    DWORD dwContLenBufLen;
    if( TRUE != HttpQueryInfo( hTar , HTTP_QUERY_CONTENT_LENGTH , dwContLength1 , &dwContLenBufLen , NULL ) ){
        return 1;
    }
    DWORD dwContLength = atol(dwContLength1);
    cout << "Buf length=" << dwContLenBufLen << endl;
    cout << "Returned " << dwContLength1 << endl;
    cout << "Length got!\n" << "app size=" << dwContLength << " Bytes\n" << "app size=" << dwContLength / (1024*1024) << " MiB\n";
	InternetCloseHandle( hConn );
	InternetCloseHandle( hInt );
	getch();

从浏览器上下载https://dl.hdslb.com/mobile/latest/iBiliPlayer-bili.apk的时候获得的apk大小是76.2MiB，然而HttpQueryInfo的时候获得的是673 Bytes，请大虾们赐教哪里出了问题
注：错误处理已省略（怕各位大虾不想看这种冗余的东西）

[Toxic_Obsidian]

我这边用HTTP_QUERY_RAW_HEADERS_CRLF输出了一下响应头，发现是HTTP/1.1 400 Bad request，所以哪位大虾能解释一下如何修改