/// <summary>
/// Получить содержимое
/// </summary>
/// <param name="hRequest">
/// Указатель на HTTPS-запрос
/// </param>
/// <param name="result">
/// Результат HTTPS-запроса
/// </param>
private static void GetContent(IntPtr hRequest, HttpResult result)
{
using (var stream = new MemoryStream())
{
const uint chunkSize = 1024U;
using (var buffer = InteropUtil.Alloc(chunkSize))
{
while (true)
{
var bytesRead = 0U;
if (!WinInet.InternetReadFile(hRequest, buffer.Address, chunkSize, ref bytesRead))
{
ThrowWinInetLastException("InternetReadFile");
}
for (var i = 0; i < bytesRead; i++)
{
stream.WriteByte(Marshal.ReadByte(buffer.Address + i));
}
if (bytesRead <= 0)
{
break;
}
}
}
result.Content = stream.ToArray();
}
}
/// <summary>
/// Получить тип содержимого
/// </summary>
/// <param name="hRequest">
/// Указатель на HTTPS-запрос
/// </param>
/// <param name="result">
/// Результат HTTPS-запроса
/// </param>
private static void GetContentType(IntPtr hRequest, HttpResult result)
{
var statusSize = 256U;
using (var buffer = InteropUtil.Alloc(statusSize))
{
if (!WinInet.HttpQueryInfoW(
hRequest,
WinInet.HTTP_QUERY_CONTENT_TYPE,
buffer.Address,
ref statusSize,
IntPtr.Zero))
{
ThrowWinInetLastException("HttpQueryInfoW(HTTP_QUERY_CONTENT_TYPE)");
}
result.ContentType = Marshal.PtrToStringUni(buffer.Address);
}
}
/// <summary>
/// Получить код статуса HTTP
/// </summary>
/// <param name="hRequest">
/// Указатель на HTTPS-запрос
/// </param>
/// <param name="result">
/// Результат HTTPS-запроса
/// </param>
private static void GetStatusCode(IntPtr hRequest, HttpResult result)
{
uint statusSize = sizeof(uint);
using (var buffer = InteropUtil.Alloc(statusSize))
{
if (!WinInet.HttpQueryInfoW(
hRequest,
WinInet.HTTP_QUERY_FLAG_NUMBER | WinInet.HTTP_QUERY_STATUS_CODE,
buffer.Address,
ref statusSize,
IntPtr.Zero))
{
ThrowWinInetLastException("HttpQueryInfoW(HTTP_QUERY_FLAG_NUMBER|HTTP_QUERY_STATUS_CODE)");
}
result.Code = (HttpStatusCode)Marshal.ReadInt32(buffer.Address);
}
}
/// <summary>
/// Конструктор
/// </summary>
/// <param name="uri">
/// Адрес конечной точки
/// </param>
/// <param name="certificate">
/// Клиентский сертифика
/// </param>
public WinInetHttpsClient(Uri uri, X509Certificate2 certificate)
{
this.uri = uri;
#region Инициализация Crypt32
if (certificate != null)
{
// Поиск сертификата
var hStore = Crypt32.CertOpenSystemStoreW(0, "My");
var hash = certificate.GetCertHash();
Crypt32.CRYPTOAPI_BLOB cryptBlob;
cryptBlob.cbData = hash.Length;
using (var hashHandle = InteropUtil.Pin(hash))
{
cryptBlob.pbData = hashHandle.Address;
using (var blobHandle = InteropUtil.Pin(cryptBlob))
{
pCertContext = Crypt32.CertFindCertificateInStore(
hStore,
Crypt32.X509_ASN_ENCODING | Crypt32.PKCS_7_ASN_ENCODING,
0,
Crypt32.CERT_FIND_SHA1_HASH,
blobHandle.Address,
IntPtr.Zero);
if (pCertContext == IntPtr.Zero)
{
ThrowWinInetLastException("CertFindCertificateInStore");
}
}
}
Crypt32.CertCloseStore(hStore, 0);
hasClientCertificate = true;
}
else
{
hasClientCertificate = false;
}
#endregion
#region Инициализация WinInet
// Инициализация WinInet
hInternet = WinInet.InternetOpenW(
"WSL_Proxy",
WinInet.INTERNET_OPEN_TYPE_DIRECT,
null,
null,
0);
if (hInternet == IntPtr.Zero)
{
ThrowWinInetLastException("InternetOpen");
}
hConnect = WinInet.InternetConnectW(hInternet, uri.Host, (short)uri.Port, null, null,
WinInet.INTERNET_SERVICE_HTTP, 0, IntPtr.Zero);
if (hConnect == IntPtr.Zero)
{
ThrowWinInetLastException("InternetConnect");
}
#endregion
}
