Question

I’m publishing a user presence in a Trusted Application Endpoint, but I also would like to clear this presence when it is no longer needed.

Is the only option to do so to terminate the UserEndpoint instance?

I’m using this code snippet:

    user.Endpoint.LocalOwnerPresence.BeginPublishPresence(
        user.categories,
        arBeginPublishPresence =>
        {
            try
            {
                user.Endpoint.PresenceServices.EndUpdatePresenceState(arBeginPublishPresence);
                logger.log("Published presence for {0} with state {1}.", user.SipUserUri, newState.Availability);
            }
            catch (RealTimeException ex)
            {
                logger.log("Failed publishing presence for {0}. {1}", user.SipUserUri, ex);
            }
        },
        null);

where user.Endpoint is the UserEndpoint for that user, and user.categories are the list of PresenceCategoryWithMetaData objects.

Answer 1

First – I’m amazed this actually works! you’re calling BeginPublishPresence on the LocalOwnerPresence object, and then in the aysnc callback calling EndUpdatePresenceState on the PresenceServices object. Please tell me this is a typo, otherwise i’m going to have to throw out everything I thought I knew about Lync development and async programming ;o)

Anyway – assuming you’re publishing presence with

LocalOwnerPresence.BeginPublishPresence

(and calling the corresponding EndPublishPresence in the async callback), you can call

LocalOwnerPresence.BeginDeletePresence

to delete the publication.