void GpsEventService_Closed(object sender, EventArgs e)
{
ILocationAlarmServiceCallback callback = (ILocationAlarmServiceCallback)sender;
Subscribers.ForEach(delegate(AlarmSubscriber subscriber)
{
if (subscriber.ClientCallback == callback)
{
Subscribers.Remove(subscriber);
logger.Info("用户" + subscriber.User.Id + "Closed Client Removed!");
}
});
}
//客户端断开
public void Unsubscribe(int UserId)
{
ILocationAlarmServiceCallback callback = OperationContext.Current.GetCallbackChannel <ILocationAlarmServiceCallback>();
Subscribers.ForEach(delegate(AlarmSubscriber subscriber)
{
if (subscriber.User.Id == UserId)
{
Subscribers.Remove(subscriber);
logger.Info("用户" + subscriber.User.Id + "注销 Client Removed!");
}
});
}
//用户订阅报警，Alarms代表要订阅的报警类型
public void Subscribe(int UserId, List <int> Alarms)
{
ILocationAlarmServiceCallback callback = OperationContext.Current.GetCallbackChannel <ILocationAlarmServiceCallback>();
User u = GetUser(UserId);
AlarmSubscriber subscriber = GetSubscirber(UserId);
if (subscriber == null)
{
subscriber = new AlarmSubscriber();
subscriber.User = u;
Subscribers.Add(subscriber);
logger.Info("客户端" + UserId + "注册");
}
subscriber.AlarmTypeList = Alarms; //更新订阅
subscriber.ClientCallback = callback;
//绑定退出事件，在客户端退出时，注销客户端的订阅
ICommunicationObject obj = (ICommunicationObject)callback;
obj.Closed += new EventHandler(GpsEventService_Closed);
obj.Closing += new EventHandler(GpsEventService_Closing);
}
