/*
* Copyright (c) 2012 Alexander Diener,
*
* This program is free software: you can redistribute it and/or modify it under
* the terms of the GNU General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any later
* version.
*
* This program 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 General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
package de.fhkn.in.uce.connectivitymanager.investigator;
import java.net.InetSocketAddress;
import java.util.ResourceBundle;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import de.fhkn.in.uce.plugininterface.NATBehavior;
import de.fhkn.in.uce.plugininterface.NATFeatureRealization;
public final class InfrastructureInvestigatorImpl implements InfrastructreInvestigator {
private static final String PROPERTY_STUN_SERVER = "de.fhkn.in.uce.connectivitymanager.investigator.stunserver"; //$NON-NLS-1$
private static final String PROPERTY_NAME_PRIMARY_IP = "stunserver.primary.address"; //$NON-NLS-1$
private static final String PROPERTY_NAME_PRIMARY_PORT = "stunserver.primary.port"; //$NON-NLS-1$
private final Logger logger = LoggerFactory.getLogger(InfrastructureInvestigatorImpl.class);
private final ResourceBundle bundle;
public InfrastructureInvestigatorImpl() {
this.bundle = ResourceBundle.getBundle(PROPERTY_STUN_SERVER);
}
@Override
public NATBehavior investigateOwnNat(final int sourcePort) {
final NATFeatureRealization mapping = this.investigateMappingBehavior(sourcePort);
final NATFeatureRealization filtering = this.invetigateFilteringBehavior(sourcePort);
final NATBehavior result = new NATBehavior(mapping, filtering);
logger.debug("Current nat behavior: {}", result.toString()); //$NON-NLS-1$
return result;
}
private NATFeatureRealization investigateMappingBehavior(final int sourcePort) {
final DeterminingNATFeatureRealization determineMapping = new DeterminingTcpNatMapping(sourcePort,
this.getPrimaryStunServerAddress());
return determineMapping.executeTest();
}
private NATFeatureRealization invetigateFilteringBehavior(final int sourcePort) {
final DeterminingNATFeatureRealization determineFiltering = new DeterminingTcpNatFiltering(sourcePort,
this.getPrimaryStunServerAddress());
return determineFiltering.executeTest();
}
private InetSocketAddress getPrimaryStunServerAddress() {
final String stunServerIp = this.bundle.getString(PROPERTY_NAME_PRIMARY_IP);
final int stunServerPort = Integer.valueOf(this.bundle.getString(PROPERTY_NAME_PRIMARY_PORT));
return new InetSocketAddress(stunServerIp, stunServerPort);
}
}