fileproxylookup.java

Java SIP

/*
 * Copyright (c) 2001 The MITRE Corporation <[e-mail]>
 *
 *
 * This library is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Library General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or (at your
 * option) any later version.
 * 
 * This library 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 Library General Public
 * License for more details.
 * 
 * You should have received a copy of the GNU Library General Public License
 * along with this library; see the file COPYING.LIB.  If not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
 * MA 02111-1307, USA.
 *
 */

/**
 * Class to provide a means to lookup a Proxy Server
 *
 */

package org.mitre.jsip.proxy;

import org.mitre.jsip.*;
import java.util.*;

public class FileProxyLookup implements ProxyLookup {

    private Hashtable proxyCache = new Hashtable();
    private String localDomainName;

    /**
     * Initialize with local proxy host
     */
    public FileProxyLookup( String domainName, String hostName ) {
	localDomainName = domainName;

	proxyCache.put( domainName, new SipUri( "sip:" + hostName ) );
    }

    /**
     * A quick 'n dirty way to add more proxies
     */
    void addProxy( String domainName, String hostName ) {
	proxyCache.put( domainName, new SipUri( "sip:" + hostName ) );
    }

    /**
     * Return the local proxy server
     */
    public SipUri getProxyUri() throws SipProxyException {
	return (SipUri) proxyCache.get( localDomainName );
    }

    /**
     * Return a proxy server for a particular host ( or domain )
     */
    public SipUri getConnectionUri( String host ) throws SipProxyException {
	if ( proxyCache.containsKey( host ) ) {
	    return (SipUri) proxyCache.get( host );
	}

	// assume this is a host
	return new SipUri( "sip:" + host );
    }

    public static void main( String [] argc ) {
	// create a new instance, then test returns
	String host1 = "mitre.org";

	FileProxyLookup fpl = new FileProxyLookup( host1, "stars.mitre.org" );

	String host2 = "blah.mitre.com";

	try {
	    System.out.println( "For host " + host1 + " the returned proxy is " + 
				fpl.getConnectionUri( host1 ).getHostname() );

	    System.out.println( "For host " + host2 + " the returned proxy is " +
				fpl.getConnectionUri( host2 ).getHostname() );
	} catch ( SipProxyException spe ) {
	    System.err.println( spe.toString() );
	    System.exit( -1 );
	}

	System.exit( 0 );
    }
}