Apart from connecting to the XMPP network, we need a way to manage our roster, or who our friends are. In this chapter, we will use the simplest, but not safest, approach, by accepting all presence subscription requests:

private void AttachFeatures() 
{ 
this.xmppClient.OnPresenceSubscribe += (Sender, e) => 
{ 
Log.Informational("Accepting friendship request.", 
this.xmppClient.BareJID, e.From); 
e.Accept(); 
}; 
 
this.xmppClient.OnPresenceUnsubscribe += (Sender, e) => 
{ 
Log.Informational("Friendship removed.", 
this.xmppClient.BareJID, e.From); 
e.Accept(); 
}; 
 
this.xmppClient.OnPresenceSubscribed += (Sender, e) => 
Log.Informational("Friendship request accepted.", 
this.xmppClient.BareJID, e.From); 
this.xmppClient.OnPresenceUnsubscribed += (Sender, e) => 
Log.Informational("Friendship removal accepted.", 
this.xmppClient.BareJID, e.From); 

We also take the opportunity to log events of interest:

this.xmppClient.OnError += (Sender, ex) => Log.Error(ex); 
this.xmppClient.OnPasswordChanged += (Sender, e) => 
Log.Informational("Password changed.", 
this.xmppClient.BareJID); 
}