@Override
    public String getLocalDomain() {
        return localDomain;
    }
Returns the domain or subdomain of the local server used by the remote server
when validating the session. This information is only used to prevent many
connections from the same remote server to the same domain or subdomain of
the local server.

@return the domain or subdomain of the local server used by the remote server
        when validating the session.
xmppserver/src/main/java/org/jivesoftware/openfire/session/LocalIncomingServerSession.java