1 /***
2 *
3 * Copyright 2004 Hiram Chirino
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 *
17 **/
18 package org.activeio.net;
19
20 import java.io.IOException;
21 import java.net.DatagramSocket;
22 import java.net.InetAddress;
23 import java.net.URI;
24
25 import org.activeio.SynchChannel;
26 import org.activeio.SynchChannelFactory;
27 import org.activeio.SynchChannelServer;
28
29 /***
30 * A TcpSynchChannelFactory creates {@see org.activeio.net.TcpSynchChannel}
31 * and {@see org.activeio.net.TcpSynchChannelServer} objects.
32 *
33 * @version $Revision$
34 */
35 public class DatagramSocketSynchChannelFactory implements SynchChannelFactory {
36
37 /***
38 * Uses the {@param location}'s host and port to create a tcp connection to a remote host.
39 *
40 * @see org.activeio.SynchChannelFactory#openSynchChannel(java.net.URI)
41 */
42 public SynchChannel openSynchChannel(URI location) throws IOException {
43 DatagramSocket socket=null;
44 socket = new DatagramSocket();
45 if( location != null ) {
46 InetAddress address = InetAddress.getByName(location.getHost());
47 socket.connect(address, location.getPort());
48 }
49 return createSynchChannel(socket);
50 }
51
52 /***
53 * Uses the {@param location}'s host and port to create a tcp connection to a remote host.
54 *
55 */
56 public SynchChannel openSynchChannel(URI location, URI localLocation) throws IOException {
57 DatagramSocket socket=null;
58 InetAddress address = InetAddress.getByName(localLocation.getHost());
59 socket = new DatagramSocket(localLocation.getPort(), address);
60
61 if( location != null ) {
62 address = InetAddress.getByName(location.getHost());
63 socket.connect(address, location.getPort());
64 }
65 return createSynchChannel(socket);
66 }
67
68 /***
69 * @param socket
70 * @return
71 * @throws IOException
72 */
73 protected SynchChannel createSynchChannel(DatagramSocket socket) throws IOException {
74 return new DatagramSocketSynchChannel(socket);
75 }
76
77 /***
78 * @throws IOException allways thrown.
79 * @see org.activeio.SynchChannelFactory#bindSynchChannel(java.net.URI)
80 */
81 public SynchChannelServer bindSynchChannel(URI location) throws IOException {
82 throw new IOException("A SynchChannelServer is not available for this channel.");
83 }
84
85 }