public override int OnEvent(MsrpEvent e)
            {
                tmsrp_event_type_t type = e.getType();
                SipSession session = e.getSipSession();

                if (session == null || session.getId() != this.session.Id)
                {
                    LOG.Error("Invalid session");
                    return -1;
                }

                switch (type)
                {
                    case tmsrp_event_type_t.tmsrp_event_type_connected:
                        {
                            MsrpEventArgs eargs = new MsrpEventArgs(this.session.Id, MsrpEventTypes.CONNECTED);
                            eargs.AddExtra(MsrpEventArgs.EXTRA_SESSION, this.session);
                            EventHandlerTrigger.TriggerEvent<MsrpEventArgs>(this.session.mOnMsrpEvent, this.session, eargs);

                            if (this.session.mPendingMessages != null && this.session.mPendingMessages.Count > 0)
                            {
                                if (this.session.IsConnected)
                                {
                                    foreach (PendingMessage pendingMsg in this.session.mPendingMessages)
                                    {
                                        LOG.Info("Sending pending message...");
                                        this.session.SendMessage(pendingMsg.Message, pendingMsg.ContentType, pendingMsg.WContentType);
                                    }
                                    this.session.mPendingMessages.Clear();
                                }
                                else
                                {
                                    LOG.Warn("There are pending messages but we are not connected");
                                }
                            }
                            break;
                        }

                    case tmsrp_event_type_t.tmsrp_event_type_disconnected:
                        {
                            if (this.session.mOutFileStream != null)
                            {
                                lock (this.session.mOutFileStream)
                                {
                                    if (this.session.mOutFileStream != null)
                                    {
                                        this.session.mOutFileStream.Close();
                                        this.session.mOutFileStream = null;
                                    }
                                }
                            }

                            MsrpEventArgs eargs = new MsrpEventArgs(this.session.Id, MsrpEventTypes.DISCONNECTED);
                            eargs.AddExtra(MsrpEventArgs.EXTRA_SESSION, this.session);
                            EventHandlerTrigger.TriggerEvent<MsrpEventArgs>(this.session.mOnMsrpEvent, this.session, eargs);
                            break;
                        }

                    case tmsrp_event_type_t.tmsrp_event_type_message:
                        {
                            MsrpMessage message = e.getMessage();
                            if (message == null)
                            {
                                LOG.Error("Invalid MSRP content");
                                return -1;
                            }

                            if (message.isRequest())
                            {
                                this.ProcessRequest(message);
                            }
                            else
                            {
                                this.ProcessResponse(message);
                            }

                            break;
                        }

                    default:
                        break;
                }

                return 0;
            }
            public override int OnEvent(MsrpEvent e)
            {
                tmsrp_event_type_t type    = e.getType();
                SipSession         session = e.getSipSession();

                if (session == null || session.getId() != this.session.Id)
                {
                    LOG.Error("Invalid session");
                    return(-1);
                }

                switch (type)
                {
                case tmsrp_event_type_t.tmsrp_event_type_connected:
                {
                    MsrpEventArgs eargs = new MsrpEventArgs(this.session.Id, MsrpEventTypes.CONNECTED);
                    eargs.AddExtra(MsrpEventArgs.EXTRA_SESSION, this.session);
                    EventHandlerTrigger.TriggerEvent <MsrpEventArgs>(this.session.mOnMsrpEvent, this.session, eargs);

                    if (this.session.mPendingMessages != null && this.session.mPendingMessages.Count > 0)
                    {
                        if (this.session.IsConnected)
                        {
                            foreach (PendingMessage pendingMsg in this.session.mPendingMessages)
                            {
                                LOG.Info("Sending pending message...");
                                this.session.SendMessage(pendingMsg.Message, pendingMsg.ContentType, pendingMsg.WContentType);
                            }
                            this.session.mPendingMessages.Clear();
                        }
                        else
                        {
                            LOG.Warn("There are pending messages but we are not connected");
                        }
                    }
                    break;
                }

                case tmsrp_event_type_t.tmsrp_event_type_disconnected:
                {
                    if (this.session.mOutFileStream != null)
                    {
                        lock (this.session.mOutFileStream)
                        {
                            if (this.session.mOutFileStream != null)
                            {
                                this.session.mOutFileStream.Close();
                                this.session.mOutFileStream = null;
                            }
                        }
                    }

                    MsrpEventArgs eargs = new MsrpEventArgs(this.session.Id, MsrpEventTypes.DISCONNECTED);
                    eargs.AddExtra(MsrpEventArgs.EXTRA_SESSION, this.session);
                    EventHandlerTrigger.TriggerEvent <MsrpEventArgs>(this.session.mOnMsrpEvent, this.session, eargs);
                    break;
                }

                case tmsrp_event_type_t.tmsrp_event_type_message:
                {
                    MsrpMessage message = e.getMessage();
                    if (message == null)
                    {
                        LOG.Error("Invalid MSRP content");
                        return(-1);
                    }

                    if (message.isRequest())
                    {
                        this.ProcessRequest(message);
                    }
                    else
                    {
                        this.ProcessResponse(message);
                    }

                    break;
                }

                default:
                    break;
                }

                return(0);
            }