Empty Roster XMPPFramework Swift - swift

Question

I am building a chat client for iOS using ejabberd and Swift. When I try to retrieve the roster for a user it returns an empty set despite this user having many buddies. Where exactly am I going wrong? I have found similar questions but they seem dated.
Here is my code:
class XMPPController: NSObject {
var hostName: String
var hostPort: UInt16
var password: String
var userJID: XMPPJID
var xmppStream: XMPPStream
var xmppRoster: XMPPRoster!
var xmppRosterStorage: XMPPRosterCoreDataStorage!
init(inputHostName: String, inputUserJIDString: String, inputHostPort: UInt16, inputPassword: String) throws {
guard let formattedUserJID = XMPPJID(string: inputUserJIDString) else {
throw XMPPControllerError.wrongUserJID
}
self.hostName = inputHostName
self.hostPort = inputHostPort
self.password = inputPassword
self.userJID = formattedUserJID
self.xmppStream = XMPPStream()
self.xmppStream.hostName = hostName
self.xmppStream.hostPort = hostPort
self.xmppStream.myJID = userJID
self.xmppRosterStorage = XMPPRosterCoreDataStorage()
self.xmppRoster = XMPPRoster(rosterStorage: xmppRosterStorage)
super.init()
xmppStream.addDelegate(self, delegateQueue: DispatchQueue.main)
xmppRoster.addDelegate(self, delegateQueue: DispatchQueue.main)
xmppRoster.autoFetchRoster = true;
xmppRoster.autoAcceptKnownPresenceSubscriptionRequests = true;
xmppRoster.activate(xmppStream)
print(xmppRosterStorage.jids(for: xmppStream))
}
func connect() {
if self.xmppStream.isDisconnected {
}
do {
try self.xmppStream.connect(withTimeout: 5)
} catch {
print("Error Connecting")
}
}
func disconnect(){
self.xmppStream.disconnect()
}
}
extension XMPPController: XMPPStreamDelegate {
func xmppStreamDidConnect(_ sender: XMPPStream) {
print("Stream: Connected")
try! sender.authenticate(withPassword: password)
}
func xmppStreamDidDisconnect(_ sender: XMPPStream, withError error: Error?) {
print("Stream: Disconnected")
}
func xmppStreamDidAuthenticate(_ sender: XMPPStream) {
let presence = XMPPPresence()
self.xmppStream.send(presence)
print("Stream: Authenticated")
NotificationCenter.default.post(name: Notification.Name(rawValue: authenticatedNotificationKey), object: self)
}
func xmppStream(_ sender: XMPPStream, didNotAuthenticate error: DDXMLElement) {
print("Wrong credentials")
}
}
Thank you.

Answer 1

Answering my own questions.
Two problems.
I did not define the superclass XMPPRosterDelegate for XMPPController.
I did not call
func xmppRosterDidEndPopulating(_ sender: XMPPRoster) {
print(xmppRosterStorage.jids(for: xmppStream))
}
something that could only be done having declared XMPPRosterDelegate.

Answer 2

I cannot see to your add any user your roster. You can try this :
func sendSubscribePresenceFromUserRequest ( _ username : String) {
let otherUser = XMPPJID(string: "\(username)#\(xmppDomain)")!
self.roster.addUser(otherUser, withNickname: "Other user name" , groups: nil, subscribeToPresence: true)
}
Then You call setup XMPPRoster method after 'xmppStreamDidAuthenticate' method just like this :
func rosterSetup() {
let storage = XMPPRosterCoreDataStorage.sharedInstance()
roster = XMPPRoster(rosterStorage: storage!, dispatchQueue: DispatchQueue.main)
if let rosterXmpp = roster {
rosterXmpp.setNickname("Your name" , forUser: stream.myJID!)
rosterXmpp.activate(stream)
rosterXmpp.addDelegate(self, delegateQueue: DispatchQueue.main)
rosterXmpp.autoFetchRoster = true
rosterXmpp.autoClearAllUsersAndResources = true
rosterXmpp.autoAcceptKnownPresenceSubscriptionRequests = true
rosterXmpp.fetch()
}
}