Blink Cocoa

h1. Presence

h2. Subscriptions

Contacts have two properties that can changed in Edit Contact Panel Subscriptions section:

 1. Subscribe to Contact's Presence Information

 1. Allow Contact to see my Presence Information

h2. Published Information

The following information is published by Blink:

<pre>

Internet address: sip:tijmen@test.sip2sip.info

  Service: SID-040aafba-3bb5-4209-b6ad-27f513726e8a

      Timestamp: 2012-09-18T14:47:53.535157+02:00

      Note: I am happy

      Basic status: Open

      Extended status: Available

      Location: Netherlands/Meppel

      Contact: user@test.sip2sip.info

      Icon: https://xcap.test.sipthor.net/xcap-root/org.openmobilealliance.pres-content/users/sip:user@test.sip2sip.info/oma_status-icon/index

      Media capabilities: Audio, Chat, File Transfer, Screen Sharing

      Device: 040aafba-3bb5-4209-b6ad-27f513726e8a (Majoor)

          Hostname: Majoor

          User Agent: Blink Pro 2.0.0 (MacOSX)

          Current time: 14:48 (UTC+2)

      Device is active

          Idle threshold: 600 seconds

</pre>

Location can be disabled per account in Presence section of account preferences.

h2. Icon

User icon is uploaded to XCAP server using OMA pres-content application, replicated among multiple Blink instances and location of icons storage URL on XCAP server is published.

h2. Offline Presence

In status menu, one can change its presence state and also an offline state when Blink is offline. This is done using pidf-manipulation XCAP application.

h2. Subscribed Presence Information

Presence information received from the SIP URIs of a contacts present in the contacts list is used to update the Contact tile with

 * Status icon overlaid on botton right of user icon, indicating away, busy, extended-away or available

 * Rectangular presence indicator on right side of the tile to provide a quick overview about availability

 * Presence note is rendered on second line, multiple notes and pending authorizations are rotated every 10 seconds

 * User icon is retrieved and updated when necessary from URL advertised by user 

Selecting  Show Presence Information menu item from contextual contact menu show a panel with detailed information, not all information may have been rendered in the GUI.

h2. Sessions

 * When subscribed to Presence, if information is received, the contextual menu of each contact is updated with the possibility of starting a session to a specific device. This requires the remote device to use GRUU.