org.restcomm.protocols.ss7.sccp.impl.parameter.SequencingSegmentingImpl Maven / Gradle / Ivy
/*
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* Copyright 2011, Red Hat, Inc. and individual contributors
* Copyright 2019, Mobius Software LTD and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.restcomm.protocols.ss7.sccp.impl.parameter;
import org.restcomm.protocols.ss7.sccp.SccpProtocolVersion;
import org.restcomm.protocols.ss7.sccp.message.ParseException;
import org.restcomm.protocols.ss7.sccp.parameter.ParameterFactory;
import org.restcomm.protocols.ss7.sccp.parameter.SequenceNumber;
import org.restcomm.protocols.ss7.sccp.parameter.SequencingSegmenting;
import io.netty.buffer.ByteBuf;
/**
*
* @author yulianoifa
*
*/
public class SequencingSegmentingImpl extends AbstractParameter implements SequencingSegmenting {
private static final long serialVersionUID = 1L;
private SequenceNumber sendSequenceNumber = new SequenceNumberImpl(0);
private SequenceNumber receiveSequenceNumber = new SequenceNumberImpl(0);
private boolean moreData;
public SequencingSegmentingImpl() {
}
public SequencingSegmentingImpl(SequenceNumber sendSequenceNumber, SequenceNumber receiveSequenceNumber, boolean moreData) {
this.sendSequenceNumber = sendSequenceNumber;
this.receiveSequenceNumber = receiveSequenceNumber;
this.moreData = moreData;
}
@Override
public SequenceNumber getSendSequenceNumber() {
return sendSequenceNumber;
}
@Override
public void setSendSequenceNumber(SequenceNumber sendSequenceNumber) {
this.sendSequenceNumber = sendSequenceNumber;
}
@Override
public SequenceNumber getReceiveSequenceNumber() {
return receiveSequenceNumber;
}
@Override
public void setReceiveSequenceNumber(SequenceNumber receiveSequenceNumber) {
this.receiveSequenceNumber = receiveSequenceNumber;
}
@Override
public boolean isMoreData() {
return moreData;
}
@Override
public void setMoreData(boolean moreData) {
this.moreData = moreData;
}
@Override
public void decode(ByteBuf buffer, final ParameterFactory factory, final SccpProtocolVersion sccpProtocolVersion) throws ParseException {
if (buffer.readableBytes() < 2) {
throw new ParseException();
}
this.sendSequenceNumber = new SequenceNumberImpl((byte)(buffer.readByte() >> 1 & 0x7F));
byte b=buffer.readByte();
this.receiveSequenceNumber = new SequenceNumberImpl((byte)(b >> 1 & 0x7F));
this.moreData = (b & 0x01) == 1;
}
@Override
public void encode(ByteBuf buffer, final boolean removeSpc, final SccpProtocolVersion sccpProtocolVersion) throws ParseException {
buffer.writeByte((byte) (this.sendSequenceNumber.getValue() << 1 & 0xFE));
buffer.writeByte((byte) (this.receiveSequenceNumber.getValue() << 1 & 0xFE | ((moreData) ? 1 : 0)));
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
SequencingSegmentingImpl that = (SequencingSegmentingImpl) o;
if (sendSequenceNumber != that.sendSequenceNumber) return false;
if (receiveSequenceNumber != that.receiveSequenceNumber) return false;
return moreData == that.moreData;
}
@Override
public int hashCode() {
int result = sendSequenceNumber.getValue();
result = 31 * result + receiveSequenceNumber.getValue();
result = 31 * result + (moreData ? 1 : 0);
return result;
}
public String toString() {
return new StringBuffer().append("SequencingSegmenting [").append("ps=").append(sendSequenceNumber.getValue()).append(",pr=")
.append(receiveSequenceNumber.getValue()).append(",moreData=").append(moreData).append("]").toString();
}
}