@Override
    public void handlerRemoved(ChannelHandlerContext ctx) {
        Log.trace("Netty XMPP handler removed: {}", ctx.channel().remoteAddress() == null ? ctx.channel().localAddress() : ctx.channel().localAddress() + "--" + ctx.channel().remoteAddress());
    }
Returns the time that a connection can be idle before being closed.

@return the time a connection can be idle.
xmppserver/src/main/java/org/jivesoftware/openfire/nio/NettyConnectionHandler.java