/// <summary>
        /// 로그인
        /// </summary>
        private MessageStream MessageLogin(MessageReader reader, SocketAsyncEventArgs receiveSendEventArgs)
        {
            MessageStream response       = null;
            string        user_id        = reader.GetParam(0);
            string        user_pw        = reader.GetParam(1);
            string        user_name      = "";
            string        recv_faxbox_id = "";
            string        send_faxbox_id = "";

            /// ipep.ToString() : 100.100.106.230:2038
            /// ipep.Address.ToString() : 100.100.106.230
            IPEndPoint ipep = (IPEndPoint)receiveSendEventArgs.AcceptSocket.RemoteEndPoint;

            RESULT result = DbModule.Instance.FAS_LoginAgentClient(user_id, user_pw, ipep.ToString(), ref user_name, ref recv_faxbox_id, ref send_faxbox_id);

            if (result == RESULT.F_DB_NOTEXIST_USER_ID ||
                result == RESULT.F_DB_PASSWORD_MISMATCH)
            {
                response = MessageStream.Response(MessagePacketNameEnum.LOGIN, reader.Header, false, "사용자 ID가 없거나 암호가 잘못되었습니다.");
            }
            else if (result == RESULT.SUCCESS ||
                     result == RESULT.F_DB_LOGIN_DUPLICATED)
            {
                /// /CLOSE 전문 발송 (중복 로그인)
                if (result == RESULT.F_DB_LOGIN_DUPLICATED)
                {
                    FACInfo oldFacInfo = FACContainer.FindFACInfo(user_id);
                    if (oldFacInfo != null)
                    {
                        if (this.OnLoginDuplicated != null)
                        {
                            this.OnLoginDuplicated(oldFacInfo);
                        }
                    }
                }

                DataHoldingUserToken receiveSendToken = (receiveSendEventArgs.UserToken as DataHoldingUserToken);

                /// Login 된 Client 로 추가
                FACContainer.Update(receiveSendEventArgs.AcceptSocket, user_id, user_name);

                response = MessageStream.Response(MessagePacketNameEnum.LOGIN, reader.Header, "성공");
                response.AddPrameters(reader.GetParam(0));
                response.AddPrameters(user_name);
                response.AddPrameters(recv_faxbox_id);
                response.AddPrameters(send_faxbox_id);
                response.AddPrameters(((int)Config.CLIENT_ALIVE_INTERVAL).ToString());
                response.AddPrameters(((int)Config.CLIENT_LIMIT_RESPONSE_TIME).ToString());
                response.AddPrameters(Config.HOME_PATH_HTTP);
            }
            else
            {
                response = MessageStream.Response(MessagePacketNameEnum.LOGIN, reader.Header, false, result.ToString());
            }

            return(response);
        }