didReceiveInvitation() is not being called in XMPPFramework and Swift 2

Question

I am creating chatting application like Whatsapp.
I have successfully write the functionality of Text chat, Image, Audio, Video Transfer. Now I am creating

Answer 1

If you set a breakpoint in file XMPPMUC.m line 317

- (void)xmppStream:(XMPPStream *)sender didReceiveMessage:(XMPPMessage *)message

Is that method being called when an invitation is sent to your user? If so keep debugging and check if line 382 is being executed.

That line has this:

[multicastDelegate xmppMUC:self roomJID:roomJID didReceiveInvitation:message];