content: /*
  * 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 gov2.nist.core.net;
  
  import java.net.InetAddress;
  import java.net.UnknownHostException;
  
  import javax2.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 gov2.nist.javax2.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);
  
  
  
  
  
  }
  