[Ftp-release] ANNOUNCE: telepathy-spec 0.17.23

Will Thompson will.thompson at collabora.co.uk
Tue Apr 21 11:49:56 PDT 2009

Version 0.17.23 ("the future is mandatory") of the Telepathy
specification has been released. The most important changes are that
several previously-optional interfaces are now mandatory (to help reduce
the backwards-compatibility burden on client authors) and the
semi-undrafting of the Channel Dispatcher and Client APIs.

Git: git://git.collabora.co.uk/git/telepathy-spec.git
Gitweb: http://git.collabora.co.uk/?p=telepathy-spec.git

Changes to stable API:

* fd.o #14620: Connection.Connect is defined to be idempotent, matching
  what has always been implemented in practice. (smcv)

* All Connections must implement the Requests and Contacts interfaces,
  which are no longer considered optional. RequestChannel, ListChannels
  and listening for NewChannel are now deprecated. (smcv)

* All Connections that implement the deprecated Presence interface must
  also implement the non-deprecated SimplePresence interface; clients
  should not attempt to support the old Presence interface. (smcv)

Changes to experimental API:

* fd.o #21148: ChannelDispatcher, ChannelDispatchOperation,
  ChannelRequest, Client, Observer, Approver and Handler are considered
  to be a little less experimental. We don't yet recommend generating
  bindings for them in stable libraries, but hopefully they won't change
  much more now. Accordingly, the .DRAFT suffix has been removed. (smcv)

* fd.o #21180: Handler: added an a{sv} parameter to HandleChannels for
  future expansion. (smcv)

* fd.o #20908: Observer: added a Requests_Satisfied parameter to
  ObserveChannels. (smcv)

* fd.o #21093: Approver: altered AddDispatchOperation to pass the
  channels as a top-level argument, since the Channels property of the
  CDO is mutable (smcv)

* fd.o #21176: Handler: moved request notification to a new
  Client.Interface.Requests interface. (smcv)

Additions to stable API:

* CreateChannel and EnsureChannel may raise Offline. (wjt)

* fd.o #21109: added a Terminated error; Group change reason None is
  either Terminated or Cancelled, depending on the actor. (smcv)

* fd.o #20920: StreamedMedia: RequestStreams may raise NotImplemented
  and NotCapable, and should prefer them over InvalidArgument and
  NotAvailable.  (smcv)

* fd.o #20920: Group: AddMember may raise NotCapable. (smcv)

* Accounts have a HasBeenOnline property. (smcv)

Additions to experimental API:

* fd.o #21013: ChannelRequest: added a PreferredHandler property. (smcv)

* fd.o #21180: ChannelRequest: added an Interfaces property. (smcv)


* fd.o #21090: Approver: AddDispatchOperation is called for all channel
  dispatch operations where at least of the channels matches the filter.

* fd.o #21089: Observer: ObserveChannels only sees channels that match
  the filter. (smcv)

* fd.o #21112: FileTransfer: clarified how RequestableChannelClasses and
  ContentHashType relate. (wjt)

* fd.o #21179: added some recommendations for a high-quality channel
  dispatcher implementation. (smcv)


* The new-style (multi-page) HTML output has a devhelp index and various
  visual improvements. (davyd, wjt)

* The new-style HTML spec is uploaded correctly. (smcv, wjt)

Will, who had his first draft of this email eaten by a frozen pigeon.

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