如何防止订阅目标收到通知？ [英] How to prevent subscription targets from getting a notification?

问题描述

虽然API提到我们可以阻止订阅目标在端点订阅时收到通知：

"当 contextData 时null，将不会通知远程目标此订阅。当
contextData 设置为String.Empty时，将发送默认上下文。建议将其设置为String.Empty以与Office Communicator正确互操作。 （http://msdn.microsoft.com/en-us/library/dd186572%28v=office.13%29.aspx)

...订阅目标仍然是*从Office Communicator收到通知，提示他们接受我的ApplicationEndpoint作为其联系人列表的成员！

以下是我正在进行订阅的方式：

..
                    //建立订阅列表

                     RemotePresentitySubscriptionTarget target = new RemotePresentitySubscriptionTarget（

                         presenceBean.Sip，String.Empty）;

                     targets.Add（target）;

..

       ;          //订阅列表

                RemotePresence remotePresence = this._cachedPresenceGetter.getRemotePresence（）;

                remotePresence.BeginAddTargets（

                   目标，remotePresence_SubscribeCallback，remotePresence

               ）;

我做错了吗？或者这是API中的某种错误？

解决方案

将contextData设置为null，而不是String.Empty。

 

Ron

Though the APIs mention that we can prevent subscription targets from getting a notification when an endpoint subscribes to it:

"When contextData is null, the remote target will not be informed of this subscription. When contextData is set to String.Empty, a default context will be sent. It is advisable to set this to String.Empty to interop correctly with Office Communicator." (http://msdn.microsoft.com/en-us/library/dd186572%28v=office.13%29.aspx)

... the subscription targets are *still* getting notifications from Office Communicator, prompting them to accept my ApplicationEndpoint as a member of their contact list!

Here is how I am doing the subscription:

..
                    // build up subscription list
                    RemotePresentitySubscriptionTarget target = new RemotePresentitySubscriptionTarget(
                        presenceBean.Sip, String.Empty );

                    targets.Add(target);

..

                // subscribe the list
                RemotePresence remotePresence = this._cachedPresenceGetter.getRemotePresence();
                remotePresence.BeginAddTargets(
                    targets, remotePresence_SubscribeCallback, remotePresence
                );

Am I doing something wrong? Or is this some kind of bug in the API?

解决方案

Set contextData to null, not String.Empty.

 

Ron

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