SIP SIMPLE Client SDK

= Buddy list =

<acronym title="Design*, depth=1">TOC</acronym>

• Account
• Address-book
• Buddy list
• Watcher list
• Presence rules

Image(sipsimple-buddy-list-design.png,width=600)
Account

• GET XCAP documents xcap-caps, pres-rules, resource-lists, pidf-manipulation, rls-services
• Sends Publish for event presence
• Maintains a '''Presentity''' attributed that is sent as body to Publish
• Sends Subscribe for event presence.info
• Sends Subscribe for event presence with Supported=eventlist

Buddy lists

Contains list of buddies. The buddylist is indexed by SIP URIs. Additional one can store full name or other attributes. Based on NOTIFY for event=presence each buddy has a '''Presentity''' attribute that contains published information. GUI displays parts of it.

Buddy list is stored in resource-lists XCAP document. If RLS is used, a RLS document that can contains a list of discrete SIP URIs is built and PUT on the server.

Watcher lists

Built based on the body of NOTIFY for event=presence.winfo.

Presence rules

Based on NOTIFY for event watcher.info we update the policy and PUT pres-rules document on the XCAP server.

Icon storage

Publishing end-point, on change:

1. Generate a random filename: XYZ
 1. Build URL http://xcap.example.com/xcap-root/icon/users/sip:alice@example.com/XYZ.png
 1. HTTP PUT to xcap server
 1. Update <icon> element of pidf and PUBLISH new pidf
 1. HTTP GET for xcap-directory and locate previously uploaded icons
 1. HTTP DELETE any previous icon files

On reboot:

1. HTTP GET for xcap-directory and locate previously uploaded icon (e.g. XYZ)
 1. HTTP GET http://xcap.example.com/xcap-root/icon/users/sip:alice@example.com/XYZ.png

Subscribing end-point:

1. Parse <icon> element of pidf received in Notify
 2. HTTP GET http://xcap.example.com/xcap-root/icon/users/sip:alice@example.com/XYZ.png
 3. Cache picture and check periodically