package org.jboss.netty.example.echo;
import java.util.concurrent.atomic.AtomicLong;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.jboss.netty.buffer.ChannelBuffer;
import org.jboss.netty.buffer.ChannelBuffers;
import org.jboss.netty.channel.ChannelHandlerContext;
import org.jboss.netty.channel.ChannelStateEvent;
import org.jboss.netty.channel.ExceptionEvent;
import org.jboss.netty.channel.MessageEvent;
import org.jboss.netty.channel.SimpleChannelUpstreamHandler;
public class EchoClientHandler extends SimpleChannelUpstreamHandler {
private static final Logger logger = Logger.getLogger(EchoClientHandler.class.getName());
private final ChannelBuffer firstMessage;
private final AtomicLong transferredBytes = new AtomicLong();
public EchoClientHandler(int firstMessageSize) {
if (firstMessageSize <= 0) {
throw new IllegalArgumentException("firstMessageSize: " + firstMessageSize);
}
firstMessage = ChannelBuffers.buffer(firstMessageSize);
for (int i = 0; i < firstMessage.capacity(); i++) {
firstMessage.writeByte((byte) i);
}
}
public long getTransferredBytes() {
return transferredBytes.get();
}
@Override
public void channelConnected(ChannelHandlerContext ctx, ChannelStateEvent e) {
// Send the first message. Server will not send anything here
// because the firstMessage's capacity is 0.
e.getChannel().write(firstMessage);
}
@Override
public void messageReceived(ChannelHandlerContext ctx, MessageEvent e) {
// Send back the received message to the remote peer.
transferredBytes.addAndGet(((ChannelBuffer) e.getMessage()).readableBytes());
System.out.println("Client: " + e.getMessage());
}
@Override
public void exceptionCaught(ChannelHandlerContext ctx, ExceptionEvent e) {
// Close the connection when an exception is raised.
logger.log(Level.WARNING, "Unexpected exception from downstream.", e.getCause());
e.getChannel().close();
}
}