internal WinHttpRequestStream(SafeWinHttpHandle requestHandle, bool chunkedMode)
{
bool ignore = false;
requestHandle.DangerousAddRef(ref ignore);
_requestHandle = requestHandle;
_chunkedMode = chunkedMode;
}
internal WinHttpRequestStream(SafeWinHttpHandle requestHandle, bool chunkedMode)
{
bool ignore = false;
requestHandle.DangerousAddRef(ref ignore);
_requestHandle = requestHandle;
_chunkedMode = chunkedMode;
}
internal WinHttpResponseStream(
SafeWinHttpHandle sessionHandle,
SafeWinHttpHandle connectHandle,
SafeWinHttpHandle requestHandle)
{
// While we only use the requestHandle to do actual reads of the response body,
// we need to keep the parent handles (connection, session) alive as well.
bool ignore = false;
sessionHandle.DangerousAddRef(ref ignore);
connectHandle.DangerousAddRef(ref ignore);
requestHandle.DangerousAddRef(ref ignore);
_sessionHandle = sessionHandle;
_connectHandle = connectHandle;
_requestHandle = requestHandle;
}
internal WinHttpResponseStream(
SafeWinHttpHandle sessionHandle,
SafeWinHttpHandle connectHandle,
SafeWinHttpHandle requestHandle)
{
// While we only use the requestHandle to do actual reads of the response body,
// we need to keep the parent handles (connection, session) alive as well.
bool ignore = false;
sessionHandle.DangerousAddRef(ref ignore);
connectHandle.DangerousAddRef(ref ignore);
requestHandle.DangerousAddRef(ref ignore);
_sessionHandle = sessionHandle;
_connectHandle = connectHandle;
_requestHandle = requestHandle;
}
private void EnsureSessionHandleExists(RequestState state)
{
bool ignore = false;
if (_sessionHandle == null)
{
lock (_lockObject)
{
if (_sessionHandle == null)
{
uint accessType;
// If a custom proxy is specified and it is really the system web proxy
// (initial WebRequest.DefaultWebProxy) then we need to update the settings
// since that object is only a sentinel.
if (state.WindowsProxyUsePolicy == WindowsProxyUsePolicy.UseCustomProxy)
{
Debug.Assert(state.Proxy != null);
try
{
state.Proxy.GetProxy(state.RequestMessage.RequestUri);
}
catch (PlatformNotSupportedException)
{
// This is the system web proxy.
state.WindowsProxyUsePolicy = WindowsProxyUsePolicy.UseWinInetProxy;
state.Proxy = null;
}
}
if (state.WindowsProxyUsePolicy == WindowsProxyUsePolicy.DoNotUseProxy ||
state.WindowsProxyUsePolicy == WindowsProxyUsePolicy.UseCustomProxy)
{
// Either no proxy at all or a custom IWebProxy proxy is specified.
// For a custom IWebProxy, we'll need to calculate and set the proxy
// on a per request handle basis using the request Uri. For now,
// we set the session handle to have no proxy.
accessType = Interop.WinHttp.WINHTTP_ACCESS_TYPE_NO_PROXY;
}
else if (state.WindowsProxyUsePolicy == WindowsProxyUsePolicy.UseWinHttpProxy)
{
// Use WinHTTP per-machine proxy settings which are set using the "netsh winhttp" command.
accessType = Interop.WinHttp.WINHTTP_ACCESS_TYPE_DEFAULT_PROXY;
}
else
{
// Use WinInet per-user proxy settings.
accessType = Interop.WinHttp.WINHTTP_ACCESS_TYPE_AUTOMATIC_PROXY;
}
_sessionHandle = Interop.WinHttp.WinHttpOpen(
IntPtr.Zero,
accessType,
Interop.WinHttp.WINHTTP_NO_PROXY_NAME,
Interop.WinHttp.WINHTTP_NO_PROXY_BYPASS,
0);
if (!_sessionHandle.IsInvalid)
{
_sessionHandle.DangerousAddRef(ref ignore);
return;
}
int lastError = Marshal.GetLastWin32Error();
if (lastError != Interop.WinHttp.ERROR_INVALID_PARAMETER)
{
throw new HttpRequestException(
SR.net_http_client_execution_error,
WinHttpException.CreateExceptionUsingError(lastError));
}
// We must be running on a platform earlier than Win8.1/Win2K12R2 which doesn't support
// WINHTTP_ACCESS_TYPE_AUTOMATIC_PROXY. So, we'll need to read the Wininet style proxy
// settings ourself using our WinInetProxyHelper object.
_proxyHelper = new WinInetProxyHelper();
_sessionHandle = Interop.WinHttp.WinHttpOpen(
IntPtr.Zero,
_proxyHelper.ManualSettingsOnly ? Interop.WinHttp.WINHTTP_ACCESS_TYPE_NAMED_PROXY : Interop.WinHttp.WINHTTP_ACCESS_TYPE_NO_PROXY,
_proxyHelper.ManualSettingsOnly ? _proxyHelper.Proxy : Interop.WinHttp.WINHTTP_NO_PROXY_NAME,
_proxyHelper.ManualSettingsOnly ? _proxyHelper.ProxyBypass : Interop.WinHttp.WINHTTP_NO_PROXY_BYPASS,
0);
if (_sessionHandle.IsInvalid)
{
throw new HttpRequestException(
SR.net_http_client_execution_error,
WinHttpException.CreateExceptionUsingLastError());
}
_sessionHandle.DangerousAddRef(ref ignore);
}
}
}
}
