/*
* Copyright (C) 2005 Luca Veltri - University of Parma - Italy
*
* This file is part of MjSip (http://www.mjsip.org)
*
* MjSip 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.
*
* MjSip 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 MjSip; 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 org.zoolu.sip.header;
import org.zoolu.tools.Parser;
//import org.zoolu.sip.provider.SipStack;
/** SIP Header Max-Forwards
* The Max-Forwards header field serves to limit the number of hops a
* request can transit on the way to its destination. It consists of an
* integer that is decremented by one at each hop. If the Max-Forwards
* value reaches 0 before the request reaches its destination, it will
* be rejected with a 483(Too Many Hops) error response.
* A default Max-Forwards value 70 is used.
*/
public class MaxForwardsHeader extends Header
{
/** Creates a MaxForwardsHeader with value=<b>SipStack.max_forwards</b>
* (the default value is 70, as recommended in RFC3261) */
//public MaxForwardsHeader()
//{ super("Max-Forwards",String.valueOf(SipStack.max_forwards));
//}
/** Creates a MaxForwardsHeader with value=<i>n</i> */
public MaxForwardsHeader(int n)
{ super(SipHeaders.Max_Forwards,String.valueOf(n));
}
public MaxForwardsHeader(String hvalue)
{ super(SipHeaders.Max_Forwards,hvalue);
}
public MaxForwardsHeader(Header hd)
{ super(hd);
}
/** Sets Max-Forwards number */
public void setNumber(int n)
{ value=String.valueOf(n);
}
/** Gets Max-Forwards number */
public int getNumber()
{ return (new Parser(value)).getInt();
}
/** Decrements the Max-Forwards number */
public void decrement()
{ value=String.valueOf(getNumber()-1);
}
}