private async Task <IHttpActionResult> ProcessSignInAsync(SignInRequestMessage msg) { var result = await _validator.ValidateAsync(msg, User as ClaimsPrincipal); if (result.IsSignInRequired) { return(RedirectToLogin(_settings, result)); } if (result.IsError) { return(BadRequest(result.Error)); } var responseMessage = await _signInResponseGenerator.GenerateResponseAsync(result); await _cookies.AddValueAsync(result.ReplyUrl); return(new SignInResult(responseMessage)); }