SocketAddress


1   /*
2    * Copyright (C) 2004 - France Telecom R&D
3    * Copyright (C) 2004 - ScalAgent Distributed Technologies
4    *
5    * This library is free software; you can redistribute it and/or
6    * modify it under the terms of the GNU Lesser General Public
7    * License as published by the Free Software Foundation; either
8    * version 2.1 of the License, or any later version.
9    * 
10   * This library is distributed in the hope that it will be useful,
11   * but WITHOUT ANY WARRANTY; without even the implied warranty of
12   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13   * Lesser General Public License for more details.
14   * 
15   * You should have received a copy of the GNU Lesser General Public
16   * License along with this library; if not, write to the Free Software
17   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
18   * USA.
19   *
20   * Initial developer(s): ScalAgent Distributed Technologies
21   * Contributor(s):
22   */
23  package fr.dyade.aaa.util;
24  
25  import java.net.InetAddress  ;
26  import java.net.UnknownHostException  ;
27  
28  /**
29   * This class implements an IP Socket Address (IP address + port number)
30   */
31  public class SocketAddress {
32    /** The hostname of the Socket Address */
33    private String   hostname;
34    /** The IP address of the Socket Address */
35    private InetAddress   addr;
36    /** The port number of the Socket Address */
37    private int port;
38  
39    /**
40     * Creates a socket address from a hostname and a port number.
41     *
42     * @param hostname the Host name
43     * @param port    The port number
44     */
45    public SocketAddress(String   hostname, int port) {
46      this.hostname = hostname;
47      try {
48        addr = InetAddress.getByName(this.hostname);
49      } catch (UnknownHostException   exc) {
50        addr = null;
51      }
52      this.port = port;
53    }
54  
55    /**
56     * Resolves the IP address for this hostname, don't use an eventually
57     * caching address.
58     * 
59     * @return    the resolved IP address.
60     */
61    public InetAddress   resetAddr() {
62      try {
63        addr = InetAddress.getByName(getHostname());
64      } catch (UnknownHostException   exc) {
65        addr = null;
66      }
67      return addr;
68    }
69  
70    /**
71     * Gets the port number.
72     *
73     * @return the port number.
74     */
75     public int getPort() {
76      return port;
77    }
78    
79    /**
80     * Gets the <code>hostname</code>.
81     *
82     * @return    the hostname part of the address.
83     */
84    public String   getHostname() {
85      return hostname;
86    }
87    
88    /**
89     * Gets the <code>InetAddress</code>.
90     *
91     * @return the InetAdress or <code>null</code> if it is unresolved.
92     */
93    public InetAddress   getAddress() {
94      return addr;
95    }
96    
97    /**
98     * Compares this object against the specified object.
99     *
100    * @param   obj   the object to compare against.
101    * @return  <code>true</code> if the objects are the same;
102    *          <code>false</code> otherwise.
103    */
104   public boolean equals(Object   obj) {
105     if (obj == null || !(obj instanceof SocketAddress))
106       return false;
107     SocketAddress sa = (SocketAddress) obj;
108 
109     if ((hostname.equals(sa.hostname)) &&
110         (addr != null && addr.equals(sa.addr)) &&
111         (port == sa.port))
112       return true;
113     return false;
114   }
115 
116   /**
117    * Constructs a string representation of this InetSocketAddress.
118    *
119    * @return  a string representation of this object.
120    */
121   public String   toString() {
122     StringBuffer   strBuf = new StringBuffer  ();
123     strBuf.append("(").append(super.toString());
124     strBuf.append(",hostname=").append(hostname);
125     strBuf.append(",port=").append(port);
126     strBuf.append(",addr=").append(addr);
127     strBuf.append(")");
128     return strBuf.toString();
129   }
130 }
131
A to Z: JavaDoc & Examples Daily Java News & Articles Open Source Projects Open Source Codes Free Computer Books Remove Frame
Popular Tags