private void SendNotifyRequestForSubscription(SIPEventSubscription subscription) { try { subscription.SubscriptionDialogue.CSeq++; //logger.Debug(DateTime.Now.ToString("HH:mm:ss:fff") + " Sending NOTIFY request for " + subscription.SubscriptionDialogue.Owner + " event " + subscription.SubscriptionEventPackage.ToString() // + " and " + subscription.ResourceURI.ToString() + " to " + subscription.SubscriptionDialogue.RemoteTarget.ToString() + ", cseq=" + (subscription.SubscriptionDialogue.CSeq) + "."); int secondsRemaining = Convert.ToInt32(subscription.LastSubscribe.AddSeconds(subscription.Expiry).Subtract(DateTime.Now).TotalSeconds % Int32.MaxValue); SIPRequest notifyRequest = m_sipTransport.GetRequest(SIPMethodsEnum.NOTIFY, subscription.SubscriptionDialogue.RemoteTarget); notifyRequest.Header.From = SIPFromHeader.ParseFromHeader(subscription.SubscriptionDialogue.LocalUserField.ToString()); notifyRequest.Header.To = SIPToHeader.ParseToHeader(subscription.SubscriptionDialogue.RemoteUserField.ToString()); notifyRequest.Header.Event = subscription.SubscriptionEventPackage.ToString(); notifyRequest.Header.CSeq = subscription.SubscriptionDialogue.CSeq; notifyRequest.Header.CallId = subscription.SubscriptionDialogue.CallId; notifyRequest.Body = subscription.GetNotifyBody(); notifyRequest.Header.ContentLength = notifyRequest.Body.Length; notifyRequest.Header.SubscriptionState = "active;expires=" + secondsRemaining.ToString(); notifyRequest.Header.ContentType = subscription.NotifyContentType; notifyRequest.Header.ProxySendFrom = subscription.SubscriptionDialogue.ProxySendFrom; // If the outbound proxy is a loopback address, as it will normally be for local deployments, then it cannot be overriden. SIPEndPoint dstEndPoint = m_outboundProxy; if (m_outboundProxy != null && IPAddress.IsLoopback(m_outboundProxy.Address)) { dstEndPoint = m_outboundProxy; } else if (subscription.SubscriptionDialogue.ProxySendFrom != null) { // The proxy will always be listening on UDP port 5060 for requests from internal servers. dstEndPoint = new SIPEndPoint(SIPProtocolsEnum.udp, new IPEndPoint(SIPEndPoint.ParseSIPEndPoint(subscription.SubscriptionDialogue.ProxySendFrom).Address, m_defaultSIPPort)); } SIPNonInviteTransaction notifyTransaction = m_sipTransport.CreateNonInviteTransaction(notifyRequest, dstEndPoint, m_sipTransport.GetDefaultSIPEndPoint(dstEndPoint), m_outboundProxy); notifyTransaction.NonInviteTransactionFinalResponseReceived += (local, remote, transaction, response) => { NotifyTransactionFinalResponseReceived(local, remote, transaction, response, subscription); }; m_sipTransport.SendSIPReliable(notifyTransaction); //logger.Debug(notifyRequest.ToString()); MonitorLogEvent_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.Notifier, SIPMonitorEventTypesEnum.NotifySent, "Notification sent for " + subscription.SubscriptionEventPackage.ToString() + " and " + subscription.ResourceURI.ToString() + " to " + subscription.SubscriptionDialogue.RemoteTarget.ToString() + ".", subscription.SubscriptionDialogue.Owner)); subscription.NotificationSent(); } catch (Exception excp) { logger.Error("Exception SendNotifyRequestForSubscription. " + excp.Message); throw; } }
private void NotifyTransactionFinalResponseReceived(SIPEndPoint localSIPEndPoint, SIPEndPoint remoteEndPoint, SIPTransaction sipTransaction, SIPResponse sipResponse, SIPEventSubscription subscription) { try { if (sipResponse.StatusCode >= 300) { // The NOTIFY request was met with an error response. MonitorLogEvent_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.Notifier, SIPMonitorEventTypesEnum.Warn, "A notify request received an error response of " + sipResponse.Status + " " + sipResponse.ReasonPhrase + ".", subscription.SubscriptionDialogue.Owner)); StopSubscription(subscription); } } catch (Exception excp) { logger.Error("Exception NotifyTransactionFinalResponseReceived. " + excp.Message); } }
private void StopSubscription(SIPEventSubscription subscription) { try { m_publisher.CloseSession(m_notificationsAddress, subscription.SessionID); lock (m_subscriptions) { m_subscriptions.Remove(subscription.SessionID); } MonitorLogEvent_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.Notifier, SIPMonitorEventTypesEnum.Warn, "Stopping subscription for " + subscription.SubscriptionEventPackage.ToString() + " " + subscription.ResourceURI.ToString() + ".", subscription.SubscriptionDialogue.Owner)); } catch (Exception excp) { logger.Error("Exception StopSubscription. " + excp.Message); } }