FirstHandler.java

package com.github.nettybook.ch0;

import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import io.netty.util.internal.logging.InternalLogger;
import io.netty.util.internal.logging.InternalLoggerFactory;

/**
 * Handles a server-side channel.
 */
public class FirstHandler extends ChannelInboundHandlerAdapter {
	private static final InternalLogger logger = InternalLoggerFactory
			.getInstance(FirstHandler.class);

	@Override
	public void channelRead(ChannelHandlerContext ctx, Object msg)
			throws Exception {
		logger.info("First handler");
		ctx.fireChannelRead(msg);
	}

	@Override
	public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
		// Close the connection when an exception is raised.
		cause.printStackTrace();
		ctx.close();
	}
}