+ if (b.group() == null) {
+ b.group(workerGroup);
+ }
+
+ // There is no way to detect if this was already set by
+ // customizeBootstrap()
+ try {
+ b.channel(NioSocketChannel.class);
+ } catch (IllegalStateException e) {
+ LOG.trace("Not overriding channelFactory on bootstrap {}", b, e);
+ }
+