/*
* Copyright 2004-2005 the original author or authors.
*
* 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 net.sf.jml.message;
import java.nio.ByteBuffer;
import net.sf.jml.MsnConnectionType;
import net.sf.jml.MsnContact;
import net.sf.jml.impl.AbstractMessenger;
import net.sf.jml.impl.MsnConnectionImpl;
import net.sf.jml.protocol.MsnSession;
import net.sf.jml.util.Charset;
/**
* System message, sent by msn server, such as email notice.
*
* @author Roger Chen
*/
public final class MsnSystemMessage extends MsnMimeMessage {
private String content;
MsnSystemMessage() {
}
@Override
protected void parseBuffer(ByteBuffer buffer) {
super.parseBuffer(buffer);
content = Charset.decode(buffer);
}
public String getContent() {
return content;
}
@Override
protected void messageReceived(MsnSession session, MsnContact contact) {
super.messageReceived(session, contact);
//Judge the client is behind NAT device
String contentType = getContentType();
if (contentType != null
&& contentType.startsWith(MessageConstants.CT_PROFILE)) {
MsnConnectionImpl connectin = (MsnConnectionImpl) session
.getMessenger().getConnection();
connectin.setExternalIP(headers.getProperty("ClientIP"));
connectin.setExternalPort(headers.getIntProperty("ClientPort", -1));
if (connectin.getInternalIP().equals(connectin.getExternalIP())
&& connectin.getInternalPort() == connectin
.getExternalPort())
connectin.setConnectionType(MsnConnectionType.DIRECT);
else
connectin.setConnectionType(MsnConnectionType.NAT);
//TODO to check the NAT device supports UPnP
}
((AbstractMessenger) session.getMessenger())
.fireSystemMessageReceived(this);
}
}