[OpenSIPS-Devel] [ opensips-Patches-2847397 ] Better blf support for linksys phones

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Patches item #2847397, was opened at 2009-08-30 21:15
Message generated for change (Tracker Item Submitted) made by anmar
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Category: modules
Group: 1.5.x
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Angel Marin (anmar)
Assigned to: Nobody/Anonymous (nobody)
Summary: Better blf support for linksys phones

Initial Comment:
With current implementation, if there's no ongoing or terminated dialog registered in the presentity table, presence_dialoginfo sends a notify with empty body as reply to a subscribe.

This makes BLF support incomplete for phones that only register to dialog-info event (linksys), so they won't know the state of the subscribed uri until it makes a call.

The attached patch adds the ability to presence_dialoginfo to build a dialog-info body that reports the state of a dialog as terminated when there's no dialog, but we have a presentity entry for that user. Something like:

<?xml version="1.0"?>
<dialog-info xmlns="urn:ietf:params:xml:ns:dialog-info"
	version="0"
	state="full"
	entity="sip:alice at example.com">
	<dialog id="sip:alice at example.com">
		<state>terminated</state>
	</dialog>
</dialog-info>

The patch also adds a contains_presence api function to presence module so we can check if there's a presence entry registered for a given uri.

I've tested it only with linksys spa-9x2 phones, but it's trivial enough to not make any other phone unhappy.

This makes support for linksys blf a little better, but it's still missing a similar notify when the monitored user registers after the subscribe. Right now the subscriber won't get notified until it resubscribes.

diff against 1.5.3


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