Protocol examples: IM and status subscriptions
A user subscribes to his “home node” to receive incoming notifications:
SUBSCRIBE /users/bruceb/ HTTP/1.1
From: http://im.acmewidgets.com/users/bruceb/
Man: http://extensions.iana.org/http/rvp/0/8/
Notification-Type: update; subtype = http://extensions/iana.org/http/rvp/0/8/notification-type/notifications/
Call-Back: http://bb5.us.acmewidgets.com/imclient/notifications/
Subscription-Lifetime: 43200
A user subscribes to another user’s properties, including online status:
SUBSCRIBE /users/stevem/ HTTP/1.1
From: http://im.acmewidgets.com/users/bruceb/
Man: http://extensions.iana.org/http/rvp/0/8/
Notification-Type: update; subtype = http://extensions/iana.org/http/rvp/0/8/notification-type/properties/
Call-Back: http://im.acmewidgets.com/users/bruceb/
Subscription-Lifetime: 86400