Q:

XMPPFramework - Presence not received in iOS

I am trying to send message from simulator to device.  On simulator there is one user while on device there is another user.  But presence is not being received at any end. 
I am using XMPPFramework for ios. 
Here is the code I am using to send presence
NSXMLElement *presence = [NSXMLElement elementWithName:@"presence"];
[presence addAttributeWithName:@"to" stringValue:[NSString stringWithFormat:@"user1@server.com"]];
[presence addAttributeWithName:@"type" stringValue:@"available"];
[[self xmppStream] sendElement:presence]; 

But at the end where user1@server.com is logged in following method is NOT being invoked
- (void)xmppStream:(XMPPStream *)sender didReceivePresence:(XMPPPresence *)presence
{
    NSLog(@"---------- xmppStream:didReceivePresence: ----------");
}

What might be the issue? 

A:

The reason presence was not being sent is that code was incorrect.  I used following code to send presence
XMPPPresence *presence = [XMPPPresence presence];
    [[self xmppStream] sendElement:presence]; 

after that it showed user online on openfire server and message was correctly being sent to other users.