/*
* Copyright (C) 2005 Luca Veltri - University of Parma - Italy
*
* This source code 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 2 of the License, or
* (at your option) any later version.
*
* This source code 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 source code; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Author(s):
* Luca Veltri (luca.veltri@unipr.it)
*/
package local.server;
import org.zoolu.sip.address.SipURL;
import org.zoolu.net.SocketAddress;
/** PrefixRoutingRule.
*/
class PrefixRoutingRule implements RoutingRule
{
/** Prefix for the default rule. */
public static final String DEFAULT_PREFIX="default";
/** Matching prefix. */
String prefix;
/** Next-hop server. */
SocketAddress nexthop;
/** Creates a new PrefixRoutingRule. */
public PrefixRoutingRule(String prefix, SocketAddress nexthop)
{ this.prefix=prefix;
this.nexthop=nexthop;
}
/** Gets the proper next-hop SipURL for the selected URL.
* It return the SipURL used to reach the selected URL.
* @param sip_url the selected destination URL
* @return returns the proper next-hop SipURL for the selected URL
* if the routing rule matches the URL, otherwise it returns null. */
public SipURL getNexthop(SipURL sip_url)
{ String username=sip_url.getUserName();
if ((username!=null && username.startsWith(prefix)) || prefix.equalsIgnoreCase(DEFAULT_PREFIX))
{ return new SipURL(username,nexthop.getAddress().toString(),nexthop.getPort());
}
else return null;
}
/** Gets the String value. */
public String toString()
{ return "{prefix="+prefix+","+"nexthop="+nexthop+"}";
}
}