System.Net.HttpServerSessionHandle.DangerousGetServerSessionId C# (CSharp) Method

        internal ulong DangerousGetServerSessionId()
        {
            return _serverSessionId;
        }

        private void SetupV2Config()
        {
            uint statusCode = Interop.HttpApi.ERROR_SUCCESS;
            ulong id = 0;

            //
            // If we have already initialized V2 config, then nothing to do.
            //
            if (_V2Initialized)
            {
                return;
            }

            //
            // V2 initialization sequence:
            // 1. Create server session
            // 2. Create url group
            // 3. Create request queue - Done in Start()
            // 4. Add urls to url group - Done in Start()
            // 5. Attach request queue to url group - Done in Start()
            //

            try
            {
                statusCode = Interop.HttpApi.HttpCreateServerSession(
                    Interop.HttpApi.s_version, &id, 0);

                if (statusCode != Interop.HttpApi.ERROR_SUCCESS)
                {
                    throw new HttpListenerException((int)statusCode);
                }

                Debug.Assert(id != 0, "Invalid id returned by HttpCreateServerSession");

                _serverSessionHandle = new HttpServerSessionHandle(id);

                id = 0;
                statusCode = Interop.HttpApi.HttpCreateUrlGroup(
                    _serverSessionHandle.DangerousGetServerSessionId(), &id, 0);

                if (statusCode != Interop.HttpApi.ERROR_SUCCESS)
                {
                    throw new HttpListenerException((int)statusCode);
                }

                Debug.Assert(id != 0, "Invalid id returned by HttpCreateUrlGroup");
                _urlGroupId = id;

                _V2Initialized = true;
            }
            catch (Exception exception)
            {
                //
                // If V2 initialization fails, we mark object as unusable.
                //
                _state = State.Closed;

                //
                // If Url group or request queue creation failed, close server session before throwing.
                //
                _serverSessionHandle?.Dispose();

                if (NetEventSource.IsEnabled) NetEventSource.Error(this, $"SetupV2Config {exception}");
                throw;
            }
        }