/// <summary>
/// Handles Signout
/// </summary>
/// <returns></returns>
protected override async Task ApplyResponseGrantAsync()
{
AuthenticationResponseRevoke signout = Helper.LookupSignOut(Options.AuthenticationType, Options.AuthenticationMode);
if (signout != null)
{
object obj = null;
Context.Environment.TryGetValue("wsfed.SignOutRedirect", out obj);
string wreply = obj as string;
WsFederationMessage wsFederationMessage = new WsFederationMessage()
{
IssuerAddress = Options.IssuerAddress ?? string.Empty,
Wtrealm = Options.Wtrealm,
};
if (!string.IsNullOrWhiteSpace(wreply))
{
wsFederationMessage.Wreply = wreply;
}
else if (!string.IsNullOrWhiteSpace(Options.Wreply))
{
wsFederationMessage.Wreply = Options.Wreply;
}
if (Options.Notifications != null && Options.Notifications.RedirectToIdentityProvider != null)
{
RedirectToIdentityProviderNotification <WsFederationMessage> notification =
new RedirectToIdentityProviderNotification <WsFederationMessage> {
ProtocolMessage = wsFederationMessage
};
await Options.Notifications.RedirectToIdentityProvider(notification);
if (notification.Cancel)
{
return;
}
}
string redirect = wsFederationMessage.CreateSignOutQueryString();
if (!Uri.IsWellFormedUriString(redirect, UriKind.Absolute))
{
_logger.WriteError(string.Format(CultureInfo.InvariantCulture, "The WsFederation sign-out redirect uri is not well formed: '{0}'", redirect));
return;
}
Response.Redirect(redirect);
}
}