IdentityServer4 注销端点

POST /connect/revocation HTTP/1.1
Host: server.example.com
Content-Type: application/x-www-form-urlencoded
Authorization: Basic xxxyyy

token=<token>&
token_type_hint=refresh_token　　//可选，固定值：access_token或refresh_token

            var disco = await _cache.GetAsync();
            if (disco.IsError) throw new Exception(disco.Error);

            var client = new HttpClient();

            var result = await client.RevokeTokenAsync(new TokenRevocationRequest
            {
                Address = disco.RevocationEndpoint,
                ClientId = "roclient.reference",
                ClientSecret = "secret",

                Token = accessToken
            });

            if (result.IsError)
            {
                Console.WriteLine(result.Error);
            }
            else
            {
                Console.WriteLine(result.HttpErrorReason);
            }