public void Bind(string resource)
{
var packet = new Packet("resource")
{
Value = resource
};
var binder = new Packet("bind", "urn:ietf:params:xml:ns:xmpp-bind");
binder.AddChild(packet);
var iq = new IQ(IQType.Set);
iq.AddChild(binder);
Register(iq);
Stream.Send(iq);
}