protected override async Task ApplyResponseChallengeAsync()
{
if (Response.StatusCode != 401)
{
return;
}
AuthenticationResponseChallenge challenge = Helper.LookupChallenge(Options.AuthenticationType, Options.AuthenticationMode);
if (challenge != null)
{
string requestPrefix = Request.Scheme + "://" + Request.Host;
string callBackUrl = requestPrefix + RequestPathBase + Options.CallbackPath;
AuthenticationProperties extra = challenge.Properties;
if (string.IsNullOrEmpty(extra.RedirectUri))
{
extra.RedirectUri = requestPrefix + Request.PathBase + Request.Path + Request.QueryString;
}
RequestToken requestToken = await ObtainRequestTokenAsync(Options.ConsumerKey, Options.ConsumerSecret, callBackUrl, extra);
if (requestToken.CallbackConfirmed)
{
string twitterAuthenticationEndpoint = AuthenticationEndpoint + requestToken.Token;
var cookieOptions = new CookieOptions
{
HttpOnly = true,
Secure = Request.IsSecure
};
Response.Cookies.Append(StateCookie, Options.StateDataFormat.Protect(requestToken), cookieOptions);
var redirectContext = new TwitterApplyRedirectContext(
Context, Options,
extra, twitterAuthenticationEndpoint);
Options.Provider.ApplyRedirect(redirectContext);
}
else
{
_logger.WriteError("requestToken CallbackConfirmed!=true");
}
}
}
/// <summary>
/// Called when a Challenge causes a redirect to authorize endpoint in the Twitter middleware
/// </summary>
/// <param name="context">Contains redirect URI and <see cref="AuthenticationProperties"/> of the challenge </param>
public virtual void ApplyRedirect(TwitterApplyRedirectContext context)
{
OnApplyRedirect(context);
}