//
// ========================================================================
// Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// All rights reserved. This program and the accompanying materials
// are made available under the terms of the Eclipse Public License v1.0
// and Apache License v2.0 which accompanies this distribution.
//
// The Eclipse Public License is available at
// http://www.eclipse.org/legal/epl-v10.html
//
// The Apache License v2.0 is available at
// http://www.opensource.org/licenses/apache2.0.php
//
// You may elect to redistribute this code under either of these licenses.
// ========================================================================
//
package org.eclipse.jetty.websocket.server.examples.echo;
import java.io.IOException;
import java.nio.ByteBuffer;
import org.eclipse.jetty.util.BufferUtil;
import org.eclipse.jetty.websocket.api.RemoteEndpoint;
import org.eclipse.jetty.websocket.api.Session;
import org.eclipse.jetty.websocket.api.annotations.OnWebSocketFrame;
import org.eclipse.jetty.websocket.api.annotations.WebSocket;
import org.eclipse.jetty.websocket.api.extensions.Frame;
/**
* Echo back the incoming text or binary as 2 frames of (roughly) equal size.
*/
@WebSocket
public class EchoFragmentSocket
{
@OnWebSocketFrame
public void onFrame(Session session, Frame frame)
{
if (!frame.getType().isData())
{
// Don't process non-data frames
return;
}
ByteBuffer data = frame.getPayload();
int half = data.remaining() / 2;
ByteBuffer buf1 = data.slice();
ByteBuffer buf2 = data.slice();
buf1.limit(half);
buf2.position(half);
RemoteEndpoint remote = session.getRemote();
try
{
switch (frame.getType())
{
case BINARY:
remote.sendBytes(buf1,null);
remote.sendBytes(buf2,null);
break;
case TEXT:
// NOTE: This impl is not smart enough to split on a UTF8 boundary
remote.sendString(BufferUtil.toUTF8String(buf1),null);
remote.sendString(BufferUtil.toUTF8String(buf2),null);
break;
default:
throw new IOException("Unexpected frame type: " + frame.getType());
}
}
catch (IOException e)
{
e.printStackTrace(System.err);
}
}
}