private DefaultChannelHandlerContext getContextOrDie(
Class<? extends ChannelHandler> handlerType) {
DefaultChannelHandlerContext ctx = (DefaultChannelHandlerContext) context(handlerType);
if (ctx == null) {
throw new NoSuchElementException(handlerType.getName());
} else {
return ctx;
}
}
@Override
public ChannelHandlerContext context(Class<? extends ChannelHandler> handlerType) {
if (handlerType == null) {
throw new NullPointerException("handlerType");
}
DefaultChannelHandlerContext ctx = head.next;
for (; ; ) {
if (ctx == null) {
return null;
}
if (handlerType.isAssignableFrom(ctx.handler().getClass())) {
return ctx;
}
ctx = ctx.next;
}
}