public WinInetProxyHelper()
{
var proxyConfig = new Interop.WinHttp.WINHTTP_CURRENT_USER_IE_PROXY_CONFIG();
try
{
if (Interop.WinHttp.WinHttpGetIEProxyConfigForCurrentUser(out proxyConfig))
{
AutoConfigUrl = Marshal.PtrToStringUni(proxyConfig.AutoConfigUrl);
AutoDetect = proxyConfig.AutoDetect;
Proxy = Marshal.PtrToStringUni(proxyConfig.Proxy);
ProxyBypass = Marshal.PtrToStringUni(proxyConfig.ProxyBypass);
}
else
{
var lastError = Marshal.GetLastWin32Error();
if (lastError != Interop.WinHttp.ERROR_FILE_NOT_FOUND)
{
throw WinHttpException.CreateExceptionUsingError(lastError);
}
}
}
finally
{
// FreeHGlobal already checks for null pointer before freeing the memory.
Marshal.FreeHGlobal(proxyConfig.AutoConfigUrl);
Marshal.FreeHGlobal(proxyConfig.Proxy);
Marshal.FreeHGlobal(proxyConfig.ProxyBypass);
}
}
public WinInetProxyHelper()
{
var proxyConfig = new Interop.WinHttp.WINHTTP_CURRENT_USER_IE_PROXY_CONFIG();
try
{
if (Interop.WinHttp.WinHttpGetIEProxyConfigForCurrentUser(out proxyConfig))
{
AutoConfigUrl = Marshal.PtrToStringUni(proxyConfig.AutoConfigUrl);
AutoDetect = proxyConfig.AutoDetect;
Proxy = Marshal.PtrToStringUni(proxyConfig.Proxy);
ProxyBypass = Marshal.PtrToStringUni(proxyConfig.ProxyBypass);
}
else
{
var lastError = Marshal.GetLastWin32Error();
if (lastError != Interop.WinHttp.ERROR_FILE_NOT_FOUND)
{
throw WinHttpException.CreateExceptionUsingError(lastError);
}
}
}
finally
{
// FreeHGlobal already checks for null pointer before freeing the memory.
Marshal.FreeHGlobal(proxyConfig.AutoConfigUrl);
Marshal.FreeHGlobal(proxyConfig.Proxy);
Marshal.FreeHGlobal(proxyConfig.ProxyBypass);
}
}
private int _lastTimeAutoDetectionFailed; // Environment.TickCount units (milliseconds).
public WinInetProxyHelper()
{
Interop.WinHttp.WINHTTP_CURRENT_USER_IE_PROXY_CONFIG proxyConfig = default;
try
{
if (Interop.WinHttp.WinHttpGetIEProxyConfigForCurrentUser(out proxyConfig))
{
_autoConfigUrl = Marshal.PtrToStringUni(proxyConfig.AutoConfigUrl) !;
_autoDetect = proxyConfig.AutoDetect;
_proxy = Marshal.PtrToStringUni(proxyConfig.Proxy) !;
_proxyBypass = Marshal.PtrToStringUni(proxyConfig.ProxyBypass) !;
_useProxy = true;
}
else
{
// We match behavior of WINHTTP_ACCESS_TYPE_AUTOMATIC_PROXY and ignore errors.
int lastError = Marshal.GetLastWin32Error();
}
}
finally
{
// FreeHGlobal already checks for null pointer before freeing the memory.
Marshal.FreeHGlobal(proxyConfig.AutoConfigUrl);
Marshal.FreeHGlobal(proxyConfig.Proxy);
Marshal.FreeHGlobal(proxyConfig.ProxyBypass);
}
}
private int _lastTimeAutoDetectionFailed; // Environment.TickCount units (milliseconds).
public WinInetProxyHelper()
{
Interop.WinHttp.WINHTTP_CURRENT_USER_IE_PROXY_CONFIG proxyConfig = default;
try
{
if (Interop.WinHttp.WinHttpGetIEProxyConfigForCurrentUser(out proxyConfig))
{
_autoConfigUrl = Marshal.PtrToStringUni(proxyConfig.AutoConfigUrl) !;
_autoDetect = proxyConfig.AutoDetect != 0;
_proxy = Marshal.PtrToStringUni(proxyConfig.Proxy) !;
_proxyBypass = Marshal.PtrToStringUni(proxyConfig.ProxyBypass) !;
if (NetEventSource.Log.IsEnabled())
{
NetEventSource.Info(this, $"AutoConfigUrl={AutoConfigUrl}, AutoDetect={AutoDetect}, Proxy={Proxy}, ProxyBypass={ProxyBypass}");
}
_useProxy = true;
}
else
{
// We match behavior of WINHTTP_ACCESS_TYPE_AUTOMATIC_PROXY and ignore errors.
int lastError = Marshal.GetLastWin32Error();
if (NetEventSource.Log.IsEnabled())
{
NetEventSource.Error(this, $"error={lastError}");
}
}
if (NetEventSource.Log.IsEnabled())
{
NetEventSource.Info(this, $"_useProxy={_useProxy}");
}
}
finally
{
// FreeHGlobal already checks for null pointer before freeing the memory.
Marshal.FreeHGlobal(proxyConfig.AutoConfigUrl);
Marshal.FreeHGlobal(proxyConfig.Proxy);
Marshal.FreeHGlobal(proxyConfig.ProxyBypass);
}
}
public static bool WinHttpGetIEProxyConfigForCurrentUser(
out Interop.WinHttp.WINHTTP_CURRENT_USER_IE_PROXY_CONFIG proxyConfig)
{
if (FakeRegistry.WinInetProxySettings.RegistryKeyMissing)
{
proxyConfig.AutoDetect = false;
proxyConfig.AutoConfigUrl = IntPtr.Zero;
proxyConfig.Proxy = IntPtr.Zero;
proxyConfig.ProxyBypass = IntPtr.Zero;
TestControl.LastWin32Error = (int)Interop.WinHttp.ERROR_FILE_NOT_FOUND;
return(false);
}
proxyConfig.AutoDetect = FakeRegistry.WinInetProxySettings.AutoDetect;
proxyConfig.AutoConfigUrl = Marshal.StringToHGlobalUni(FakeRegistry.WinInetProxySettings.AutoConfigUrl);
proxyConfig.Proxy = Marshal.StringToHGlobalUni(FakeRegistry.WinInetProxySettings.Proxy);
proxyConfig.ProxyBypass = Marshal.StringToHGlobalUni(FakeRegistry.WinInetProxySettings.ProxyBypass);
return(true);
}
private const int _recentAutoDetectionInterval = 120_000; // 2 minutes in milliseconds.
public WinInetProxyHelper()
{
var proxyConfig = new Interop.WinHttp.WINHTTP_CURRENT_USER_IE_PROXY_CONFIG();
try
{
if (Interop.WinHttp.WinHttpGetIEProxyConfigForCurrentUser(out proxyConfig))
{
AutoConfigUrl = Marshal.PtrToStringUni(proxyConfig.AutoConfigUrl);
AutoDetect = proxyConfig.AutoDetect;
Proxy = Marshal.PtrToStringUni(proxyConfig.Proxy);
ProxyBypass = Marshal.PtrToStringUni(proxyConfig.ProxyBypass);
WinHttpTraceHelper.Trace(
"WinInetProxyHelper.ctor: AutoConfigUrl={0}, AutoDetect={1}, Proxy={2}, ProxyBypass={3}",
AutoConfigUrl,
AutoDetect,
Proxy,
ProxyBypass);
_useProxy = true;
}
else
{
// We match behavior of WINHTTP_ACCESS_TYPE_AUTOMATIC_PROXY and ignore errors.
int lastError = Marshal.GetLastWin32Error();
WinHttpTraceHelper.Trace("WinInetProxyHelper.ctor: error={0}", lastError);
}
WinHttpTraceHelper.Trace("WinInetProxyHelper.ctor: _useProxy={0}", _useProxy);
}
finally
{
// FreeHGlobal already checks for null pointer before freeing the memory.
Marshal.FreeHGlobal(proxyConfig.AutoConfigUrl);
Marshal.FreeHGlobal(proxyConfig.Proxy);
Marshal.FreeHGlobal(proxyConfig.ProxyBypass);
}
}
public WinInetProxyHelper()
{
var proxyConfig = new Interop.WinHttp.WINHTTP_CURRENT_USER_IE_PROXY_CONFIG();
try
{
if (Interop.WinHttp.WinHttpGetIEProxyConfigForCurrentUser(out proxyConfig))
{
AutoConfigUrl = Marshal.PtrToStringUni(proxyConfig.AutoConfigUrl);
AutoDetect = proxyConfig.AutoDetect;
Proxy = Marshal.PtrToStringUni(proxyConfig.Proxy);
ProxyBypass = Marshal.PtrToStringUni(proxyConfig.ProxyBypass);
WinHttpTraceHelper.Trace(
"WinInetProxyHelper.ctor: AutoConfigUrl={0}, AutoDetect={1}, Proxy={2}, ProxyBypass={3}",
AutoConfigUrl,
AutoDetect,
Proxy,
ProxyBypass);
_useProxy = true;
}
else
{
// We match behavior of WINHTTP_ACCESS_TYPE_AUTOMATIC_PROXY and ignore errors.
int lastError = Marshal.GetLastWin32Error();
WinHttpTraceHelper.Trace("WinInetProxyHelper.ctor: error={0}", lastError);
}
WinHttpTraceHelper.Trace("WinInetProxyHelper.ctor: _useProxy={0}", _useProxy);
}
finally
{
// FreeHGlobal already checks for null pointer before freeing the memory.
Marshal.FreeHGlobal(proxyConfig.AutoConfigUrl);
Marshal.FreeHGlobal(proxyConfig.Proxy);
Marshal.FreeHGlobal(proxyConfig.ProxyBypass);
}
}
