[Telepathy] requestHandles method behaviour

Alexandr Akulich akulichalexander at gmail.com
Mon Sep 19 21:37:43 UTC 2016

Morse and Nonsense both returns a handle list.

In case of Nonsense: type of the list is UniqueHandleMap with
operators and the used operator [] will return a new handle for each
new identifier.


The identifier <-> handle map is not the "contact list". Under
"contact list" I mean contacts, which e.g. would be returned by
Connection.Interface.ContactList GetContactListAttributes().

On Tue, Sep 20, 2016 at 2:28 AM, Mateus Bellomo <mateusbellomo at gmail.com> wrote:
> Thanks for the reply guys and sorry for the duplicated post =)
>> The thing is that ensureHandle() does (or at least should) NOT add the
>> identifier to the contact list.
> When you say list do you also refer to the map that I hold contacts
> identifiers and handles, or you refer just the actual list of contacts?
>> The RequestHandles method do exactly
>> one  thing: returns valid handle for identifier. Error "Invalid
>> Handle" should be returned if the given identifier does not identify a
>> valid entity of the given type.
> Looking at telepathy-nonsense [1] it returns the mapped handle for a
> existing contact identifier and I think it will return an empty List if the
> contact didn't exist.
> But in telepathy-morse [2] it adds the contact to the map if it didn't exist
> and then return the List.
> So in this case I should do like telepathy-nonsense?
>> I'm going to suggest it again: ask Empathy developers.
> Is there a specific list for that? I thought this was the correct list.
> [1]
> https://github.com/TelepathyQt/telepathy-nonsense/blob/master/connection.cc#L728
> [2]
> https://github.com/TelepathyQt/telepathy-morse/blob/master/connection.cpp#L635
> 2016-09-19 17:36 GMT-03:00 George Kiagiadakis <gkiagia at tolabaki.gr>:
>> On 09/19/2016 08:59 PM, Mateus Bellomo wrote:
>> > Hello,
>> >
>> > I have implemented the requestSubscription() and requestHandles()
>> > methods at telepathy-resiprocate [1]. I'm using Empathy as a client and
>> > testing it I noticed that when I try to add a contact in the contact
>> > list, in the window that opens, the method requestHandle() is being
>> > called several times while the user is typing the contact to add. So
>> > several 'partial' contacts are being added to my map that holds my
>> > contact identifiers [2] [3] like this:
>> >
>> > mateus
>> > mateus2@
>> > mateus2 at test.s
>> > mateus2 at test.sip5060
>> > mateus2 at test.sip5060.net <mailto:mateus2 at test.sip5060.net>
>> >
>> > I'm wondering if this behaviour should be expected from telepathy or
>> > it's just a bug.
>> It doesn't seem to violate the spec, so I would say it's pretty fine for
>> a client to do that. It just needs a way to check if an identifier is a
>> valid contact or not and this is the best way to do it. Of course, it
>> may generate a lot of d-bus traffic, but I don't think that's causing
>> any serious problems.
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