public static int getInflightRequestCountFromChannel(Channel ch) {
        AtomicInteger current = ch.attr(ATTR_CURRENT_REQS).get();
        return current == null ? 0 : current.get();
    }
User: michaels@netflix.com
Date: 4/14/16
Time: 3:51 PM
zuul-core/src/main/java/com/netflix/netty/common/metrics/HttpMetricsChannelHandler.java