/*
* 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.sdp;
import org.zoolu.tools.Parser;
/** SDP connection field.
* <p>
* <BLOCKQUOTE><PRE>
* connection-field = "c=" nettype SP addrtype SP connection-address CRLF
* ;a connection field must be present
* ;in every media description or at the
* ;session-level
* </PRE></BLOCKQUOTE>
*/
public class ConnectionField extends SdpField
{
/** Creates a new ConnectionField. */
public ConnectionField(String connection_field)
{ super('c',connection_field);
}
/** Creates a new ConnectionField. */
public ConnectionField(String address_type, String address, int ttl, int num)
{ super('c',null);
value="IN "+address_type+" "+address;
if (ttl>0) value+="/"+ttl;
if (num>0) value+="/"+num;
}
/** Creates a new ConnectionField. */
public ConnectionField(String address_type, String address)
{ super('c',"IN "+address_type+" "+address);
}
/** Creates a new ConnectionField. */
public ConnectionField(SdpField sf)
{ super(sf);
}
/** Gets the connection address. */
public String getAddressType()
{ String type=(new Parser(value)).skipString().getString();
return type;
}
/** Gets the connection address. */
public String getAddress()
{ String address=(new Parser(value)).skipString().skipString().getString();
int i=address.indexOf("/");
if (i<0) return address; else return address.substring(0,i);
}
/** Gets the TTL. */
public int getTTL()
{ String address=(new Parser(value)).skipString().skipString().getString();
int i=address.indexOf("/");
if (i<0) return 0;
int j=address.indexOf("/",i);
if (j<0) return Integer.parseInt(address.substring(i)); else return Integer.parseInt(address.substring(i,j));
}
/** Gets the number of addresses. */
public int getNum()
{ String address=(new Parser(value)).skipString().skipString().getString();
int i=address.indexOf("/");
if (i<0) return 0;
int j=address.indexOf("/",i);
if (j<0) return 0;
return Integer.parseInt(address.substring(j));
}
}