The method lookupHostAddress() returns null in case of an error, hence
we need to test if the returned value is null prior adding the endpoint.
Should fix the following NPE:
java.lang.NullPointerException:
at org.jivesoftware.smack.tcp.XMPPTCPConnection.connectUsingConfiguration (XMPPTCPConnection.java:606)
at org.jivesoftware.smack.tcp.XMPPTCPConnection.connectInternal (XMPPTCPConnection.java:846)
at org.jivesoftware.smack.AbstractXMPPConnection.connect (AbstractXMPPConnection.java:530)
at org.jivesoftware.smack.ReconnectionManager$2.run (ReconnectionManager.java:282)
at java.lang.Thread.run (Thread.java:784)
Reported-by: Eng ChongMeng <cmeng.gm@gmail.com>
This is a complete redesign of what was previously
XmppNioTcpConnection. The new architecture allows to extend an XMPP
client to server (c2s) connection with new transport bindings and
other extensions.