C# Lync Client SDK:接收可用性

我制作了一个小应用程序，当我的一个联系人的可用性发生变化时，可以对其进行更新。目前我只记录这个

我在这里找到了一个很棒的资源：

其基本建议如下：

//Register to a contact
Contact contactByUri = _lyncClient.ContactManager.GetContactByUri(user.UserUri);
contactByUri.ContactInformationChanged += new EventHandler(Self_ContactInformationChanged);

void Self_ContactInformationChanged(object sender, ContactInformationChangedEventArgs e)
{
    Contact self = sender as Contact;

    // has user changed his availability (therefore, his presence status)?
    if (e.ChangedContactInformation.Contains(ContactInformationType.Availability))
    {
        ContactAvailability availability = (ContactAvailability)self.GetContactInformation(ContactInformationType.Availability);
        string activity = (string)self.GetContactInformation(ContactInformationType.Activity);
        OnAvailabilityChanged(availability, activity);
    }
}

Invalid (-1),
None (0) – Do not use this enumerator. This flag indicates that the cotact state is unspecified.,
Free (3500) – A flag indicating that the contact is available,
FreeIdle (5000) – Contact is free but inactive,
Busy (6500) – A flag indicating that the contact is busy and inactive,
BusyIdle (7500) – Contact is busy but inactive,
DoNotDisturb (9500) – A flag indicating that the contact does not want to be disturbed,
TemporarilyAway (12500) – A flag indicating that the contact is temporarily away,
Away (15500) – A flag indicating that the contact is away,
Offline (18500) – A flag indicating that the contact is signed out.

如果可用性是以下情况之一：

//Register to a contact
Contact contactByUri = _lyncClient.ContactManager.GetContactByUri(user.UserUri);
contactByUri.ContactInformationChanged += new EventHandler(Self_ContactInformationChanged);

void Self_ContactInformationChanged(object sender, ContactInformationChangedEventArgs e)
{
    Contact self = sender as Contact;

    // has user changed his availability (therefore, his presence status)?
    if (e.ChangedContactInformation.Contains(ContactInformationType.Availability))
    {
        ContactAvailability availability = (ContactAvailability)self.GetContactInformation(ContactInformationType.Availability);
        string activity = (string)self.GetContactInformation(ContactInformationType.Activity);
        OnAvailabilityChanged(availability, activity);
    }
}

Invalid (-1),
None (0) – Do not use this enumerator. This flag indicates that the cotact state is unspecified.,
Free (3500) – A flag indicating that the contact is available,
FreeIdle (5000) – Contact is free but inactive,
Busy (6500) – A flag indicating that the contact is busy and inactive,
BusyIdle (7500) – Contact is busy but inactive,
DoNotDisturb (9500) – A flag indicating that the contact does not want to be disturbed,
TemporarilyAway (12500) – A flag indicating that the contact is temporarily away,
Away (15500) – A flag indicating that the contact is away,
Offline (18500) – A flag indicating that the contact is signed out.

大多数时候，一切正常，但有时，我会收到一封

ContactAvailability

=

None

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我想知道为什么，以及我是否可以做些什么来解决这个问题？（如重置客户端sdk…）

我从来没有找到Lync有时无法报告实际联系人可用性的好理由。我有时在UCMA代码中也会看到这一点，在UCMA代码中，我可以为用户订阅状态更新，在回调事件中，我会收到他们的AggregatePresenceState为null的通知

我还没有深入研究它，但也许将Lync客户端日志设置为最大详细度，并使用Snooper工具或使用Wireshark检查跟踪会发现收到的损坏的SIP NOTIFY消息

另外，值得注意的是，SDK中用于将原始整数ContactInformationType.Availability值解析为ContactAvailability枚举值（）的Microsoft示例代码与其自身的规范（）不匹配，因此示例代码会导致无效的0可用性值被解释为联机。您可以尝试此操作

 List < ContactInformationType > contactInformationList = new List<ContactInformationType>();
 //contactInformationList.Add(ContactInformationType.Activity);
 contactInformationList.Add(ContactInformationType.Availability);
// contactInformationList.Add(ContactInformationType.CapabilityString);              
 ContactSubscription contactSubscription = 
LyncClient.GetClient().ContactManager.CreateSubscription();

然后尝试使用

contact.GetContactInformation(ContactInformationType.DisplayName).ToString()+"   "+ contact.GetContactInformation(ContactInformationType.Availability).ToString();

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我还看到Lync API在没有明显原因的情况下随机无法提供PrimaryEmailAddress和ContactEndpoints