/*
* Copyright 2013 The Netty Project
*
* The Netty Project licenses this file to you under the Apache License, version
* 2.0 (the "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package org.jboss.aerogear.io.netty.handler.codec.sockjs.protocol;
import static io.netty.buffer.Unpooled.copiedBuffer;
import static io.netty.buffer.Unpooled.unreleasableBuffer;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.DefaultByteBufHolder;
import io.netty.util.CharsetUtil;
import io.netty.util.internal.StringUtil;
/**
* Everytime a new session is estabilshed with the server the server must sent an OpenFrame in accordance with
* <a href="http://sockjs.github.io/sockjs-protocol/sockjs-protocol-0.3.3.html#section-42">Protocol and Framing</a>.
*/
public class OpenFrame extends DefaultByteBufHolder implements Frame {
static final String OPEN = "o";
private static final ByteBuf OPEN_FRAME = unreleasableBuffer(copiedBuffer(OPEN, CharsetUtil.UTF_8));
public OpenFrame() {
super(OPEN_FRAME.duplicate());
}
@Override
public String toString() {
return StringUtil.simpleClassName(this) + "[o]";
}
@Override
public OpenFrame copy() {
return new OpenFrame();
}
@Override
public OpenFrame duplicate() {
return new OpenFrame();
}
@Override
public OpenFrame retain() {
OPEN_FRAME.retain();
return this;
}
@Override
public OpenFrame retain(int increment) {
OPEN_FRAME.retain(increment);
return this;
}
}