SSO - How to logout?

I logged in using SSO and it worked.

But I want to use SSO to logout, and after checking, it seems that Session Endpoint is not supported.

I use the Revoke endpoint, but it automatically login after successfully revoke.

May I ask how to correctly exit SSO?

.Net 7 , OIDC

authentication.AddOpenIdConnect(OpenIdConnectDefaults.AuthenticationScheme, "SSO", options =>
{
options.ClientId = Configuration.GetValue<string>("SSO:ClientId");
options.ClientSecret = Configuration.GetValue<string>("SSO:ClientSecret");
options.MetadataAddress = Configuration.GetValue<string>("SSO:MetadataAddress");
options.ResponseType = OpenIdConnectResponseType.CodeIdTokenToken;
options.SaveTokens = true;
options.GetClaimsFromUserInfoEndpoint = true;
options.TokenValidationParameters.NameClaimType = "name";
options.TokenValidationParameters.RoleClaimType = "role";
});

logout code

protected override void OnLoggedOff()
{
base.OnLoggedOff();
if (IsLoggedOn)
{
HttpContext httpContext = ServiceProvider.GetRequiredService<IHttpContextAccessor>().HttpContext;
if (httpContext != null)
{
var id_token = httpContext.GetTokenAsync("id_token").GetAwaiter().GetResult() ?? string.Empty;
var refresh_token = httpContext.GetTokenAsync("refresh_token").GetAwaiter().GetResult() ?? string.Empty;
var access_token = httpContext.GetTokenAsync("access_token").GetAwaiter().GetResult() ?? string.Empty;
var httpClientFactory = ServiceProvider.GetRequiredService<IHttpClientFactory>();
var httpClient = httpClientFactory.CreateClient();
using var request = new TokenRevocationRequest();
request.Address = Configuration.GetValue<string>("SSO:RevokeEndpoint");;
request.ClientId = Configuration.GetValue<string>("SSO:ClientId");
request.ClientSecret = Configuration.GetValue<string>("SSO:ClientSecret");
if (string.IsNullOrEmpty(access_token) == false)
{
using TokenRevocationRequest request_AccessToken = request.Clone<TokenRevocationRequest>();
request_AccessToken.Token = access_token;
request_AccessToken.TokenTypeHint = "access_token";
var response = httpClient.RevokeTokenAsync(request_AccessToken).GetAwaiter().GetResult();
if (response.IsError)
{
}
}
}
}
}