How to enable mucsub in ejabberd 17.01

[PH-F]

1
I read that muc_sub should be available in ejabberd 17.01.
But how do we enable muc-sub in Ejabberd 17.01.
The iOS client can not discover the mucsub feature.

2
And where in the ejabberd.yml must i add the allow_subscription: true, i added this, don't know if it's ok though

mod_muc:
    default_room_options:
        allow_subscription: true
        persistent: true
        mam: true

3
Can each user get the list of subscribers or only moderator. And if so can each user be a moderator?

[badlop]

1.1 It was first included in ejabberd 16.08.
1.2 The MUC Service has that feature enabled by default.
1.3 It is announced in the MUC service:

<iq id='66:762669' type='get' to='conference.localhost'>
  <query xmlns='http://jabber.org/protocol/disco#info'/>
</iq>
<iq to='user1@localhost/tka1'
	from='conference.localhost'
	type='result'
	id='66:762669'>
  <query xmlns='http://jabber.org/protocol/disco#info'>
    <feature var='http://jabber.org/protocol/muc'/>
    <feature var='vcard-temp'/>
    <feature var='urn:xmpp:mucsub:0'/>
    ...
  </query>
</iq>

2. I tried your example config, and it correctly sets to true those options when creating a new room. I joined a new room, and when I configured that room, it was already persistent, allowed subscriptions, and had MAM archiving enabled.

3. Can each user get the list of subscribers or only moderator.

As specified in https://docs.ejabberd.im/developer/xmpp-clients-bots/proposed-extensions/muc-sub/#list-of-subscriptions
only a room moderator can query the list of subscribers in that room.

And if so can each user be a moderator?

It is possible, you just have to grant moderator right user per user when they join the room. Alternatively, you can modify the source code to allow any room occupant to query the list of subscribers.

[lock]

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