/**
* Copyright (C) 2010-2012, FuseSource Corp. All rights reserved.
*
* http://fusesource.com
*
* Licensed 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.fusesource.mqtt.codec;
import org.fusesource.hawtbuf.*;
import java.io.IOException;
import java.net.ProtocolException;
import static org.fusesource.mqtt.codec.MessageSupport.*;
/**
* <p>
* </p>
*
* @author <a href="http://hiramchirino.com">Hiram Chirino</a>
*/
public class CONNACK implements Message {
public static final byte TYPE = 2;
public static enum Code {
CONNECTION_ACCEPTED,
CONNECTION_REFUSED_UNACCEPTED_PROTOCOL_VERSION,
CONNECTION_REFUSED_IDENTIFIER_REJECTED,
CONNECTION_REFUSED_SERVER_UNAVAILABLE,
CONNECTION_REFUSED_BAD_USERNAME_OR_PASSWORD,
CONNECTION_REFUSED_NOT_AUTHORIZED;
}
private Code code = Code.CONNECTION_ACCEPTED;
public byte messageType() {
return TYPE;
}
public CONNACK decode(MQTTFrame frame) throws ProtocolException {
assert(frame.buffers.length == 1);
DataByteArrayInputStream is = new DataByteArrayInputStream(frame.buffers[0]);
is.skip(1);
byte c = is.readByte();
if( c >= Code.values().length ) {
throw new ProtocolException("Invalid CONNACK encoding");
}
code = Code.values()[c];
return this;
}
public MQTTFrame encode() {
try {
DataByteArrayOutputStream os = new DataByteArrayOutputStream(2);
os.writeByte(0);
os.writeByte(code.ordinal());
MQTTFrame frame = new MQTTFrame();
frame.commandType(TYPE);
return frame.buffer(os.toBuffer());
} catch (IOException e) {
throw new RuntimeException("The impossible happened");
}
}
public Code code() {
return code;
}
public CONNACK code(Code code) {
this.code = code;
return this;
}
@Override
public String toString() {
return "CONNACK{" +
"code=" + code +
'}';
}
}