| /* |
| * Conditions Of Use |
| * |
| * This software was developed by employees of the National Institute of |
| * Standards and Technology (NIST), an agency of the Federal Government. |
| * Pursuant to title 15 Untied States Code Section 105, works of NIST |
| * employees are not subject to copyright protection in the United States |
| * and are considered to be in the public domain. As a result, a formal |
| * license is not needed to use the software. |
| * |
| * This software is provided by NIST as a service and is expressly |
| * provided "AS IS." NIST MAKES NO WARRANTY OF ANY KIND, EXPRESS, IMPLIED |
| * OR STATUTORY, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTY OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT |
| * AND DATA ACCURACY. NIST does not warrant or make any representations |
| * regarding the use of the software or the results thereof, including but |
| * not limited to the correctness, accuracy, reliability or usefulness of |
| * the software. |
| * |
| * Permission to use this software is contingent upon your acceptance |
| * of the terms of this agreement |
| * |
| * . |
| * |
| */ |
| package gov.nist.core.net; |
| |
| import java.net.InetAddress; |
| import java.net.UnknownHostException; |
| |
| import javax.sip.address.Hop; |
| |
| /** |
| * An interface that allows you to customize address lookup. |
| * The user can implement this interface to do DNS lookups or other lookup |
| * schemes and register it with the stack. |
| * The default implementation of the address resolver does nothing more than just return back |
| * the Hop that it was passed (fixing up the port if necessary). |
| * However, this behavior can be overriden. To override |
| * implement this interface and register it with the stack using |
| * {@link gov.nist.javax.sip.SipStackExt#setAddressResolver(AddressResolver)}. |
| * This interface will be incorporated into version 2.0 of the JAIN-SIP Specification. |
| * |
| * @since 2.0 |
| * |
| * |
| * @author M. Ranganathan |
| * |
| */ |
| public interface AddressResolver { |
| |
| /** |
| * Do a name lookup and resolve the given IP address. |
| * The default implementation is just an identity mapping |
| * (returns the argument). |
| * |
| * @param hop - an incoming Hop containing a potenitally unresolved address. |
| * @return a new hop ( if the address is recomputed ) or the original hop |
| * if this is just an identity mapping ( the default behavior ). |
| */ |
| public Hop resolveAddress( Hop hop); |
| |
| |
| |
| |
| |
| } |