[reSIProcate] Slight change to onReferAccepted/onReferRejected callbacks in InviteSessionHandler

["Derek MacDonald" <derek@xxxxxxxxxxxxxxx>]

DUM used to call onReferRejected even if the REFER was accepted if the NOTIFY message terminated the ServerSubscription.

 

For example, for:

 

A                                B

| -----------REFER-------à|

| ß---------202---------------|

| ß---------NOTIFY---------|

 

Where the NOTIFY terminates the subscription, through ubscription-state of terminated or a 200 class

The callback sequence would be:

 

ClientSubscriptionHandler::onTerminated

InviteSessionHandler::onReferRejected.

 

 

This is not correct if the transfer was successful; the NOTIFY sipfrag could contain a 200 class status line.  DUM now calls onReferAccepted if the REFER message is accepted, regardless of the contents of the NOTIFY.  The new callback sequence is:

 

InviteSessionHandler::onReferAccepted.

ClientSubscriptionHandler::onTerminated

 

--Derek