package com.manning.nettyinaction.chapter8;
import io.netty.channel.Channel;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelFutureListener;
import io.netty.channel.DefaultFileRegion;
import io.netty.channel.FileRegion;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
/**
* @author <a href="mailto:nmaurer@redhat.com">Norman Maurer</a>
*/
public class DefaultFileRegionUsage {
public static void transfer(Channel channel, File file) throws FileNotFoundException {
FileInputStream in = new FileInputStream(file);
FileRegion region = new DefaultFileRegion(in.getChannel(), 0, file.length());
channel.writeAndFlush(region).addListener(new ChannelFutureListener() {
@Override
public void operationComplete(ChannelFuture future) throws Exception {
if (!future.isSuccess()) {
Throwable cause = future.cause();
// Do something
}
}
});
}
}