Clover coverage report - ActiveIO - 1.0 Coverage timestamp: Fri Apr 22 2005 14:27:22 PDT FRAMES NO FRAMES |
file stats: | LOC: | 162 |  | Methods: | 13
| NCLOC: | 90 |  | Classes: | 2
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Source file | Conditionals | Statements | Methods | TOTAL
DatagramSocketSynchChannel.java | 0% | 0% | 0% | 0% |

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 |  |
      *
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      * 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.
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      *
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      **/
18 |  |
19 |  |
     package org.activeio.net;
20 |  |
21 |  |
     import java.io.IOException;
22 |  |
     import java.net.DatagramPacket;
23 |  |
     import java.net.DatagramSocket;
24 |  |
     import java.net.SocketException;
25 |  |
     import java.net.SocketTimeoutException;
26 |  |
27 |  |
     import org.activeio.Packet;
28 |  |
     import org.activeio.SynchChannel;
29 |  |
     import org.activeio.SynchChannelServer;
30 |  |
     import org.activeio.Packet.ByteSequence;
31 |  |
     import org.activeio.packet.ByteArrayPacket;
32 |  |
     import org.activeio.packet.FilterPacket;
33 |  |
34 |  |
     /**
35 |  |
      * A {@see org.activeio.SynchChannel}implementation that uses
36 |  |
      * TCP to talk to the network.
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      *
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      * @version $Revision$
39 |  |
      */
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     final public class DatagramSocketSynchChannel implements SynchChannel {
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42 |  |
         private final class UDPFilterPacket extends FilterPacket {
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             private final DatagramPacket packet;
44 |  |
45 | 0 |
             private UDPFilterPacket(Packet next, DatagramPacket packet) {
46 | 0 |
                 super(next);
47 | 0 |
                 this.packet = packet;
48 |  |
             }
49 |  |
50 | 0 |
             public Object narrow(Class target) {
51 | 0 |
                 if( target == DatagramContext.class ) {
52 | 0 |
                     return new DatagramContext(packet);
53 |  |
                 }
54 | 0 |
                 return super.narrow(target);
55 |  |
             }
56 |  |
57 | 0 |
             public Packet filter(Packet packet) {
58 | 0 |
                 return new UDPFilterPacket(packet, this.packet);
59 |  |
             }
60 |  |
         }
61 |  |
62 |  |
         private static final int DEFAULT_BUFFER_SIZE = 64 * 1024;
63 |  |
64 |  |
         private final DatagramSocket socket;
65 |  |
66 |  |
         private boolean disposed;
67 |  |
68 |  |
         private int curentSoTimeout;
69 |  |
70 |  |
         /**
71 |  |
          * Construct basic helpers
72 |  |
          *
73 |  |
          * @param wireFormat
74 |  |
          * @throws IOException
75 |  |
          */
76 | 0 |
         protected DatagramSocketSynchChannel(DatagramSocket socket) throws IOException {
77 | 0 |
             this.socket = socket;
78 | 0 |
             socket.setReceiveBufferSize(DEFAULT_BUFFER_SIZE);
79 | 0 |
             socket.setSendBufferSize(DEFAULT_BUFFER_SIZE);
80 |  |
         }
81 |  |
82 |  |
         /**
83 |  |
          * @see org.activeio.SynchChannel#read(long)
84 |  |
          */
85 | 0 |
         public org.activeio.Packet read(long timeout) throws IOException {
86 | 0 |
             try {
87 |  |
88 | 0 |
                 if (timeout == SynchChannelServer.WAIT_FOREVER_TIMEOUT)
89 | 0 |
                     setSoTimeout(0);
90 | 0 |
                 else if (timeout == SynchChannelServer.NO_WAIT_TIMEOUT)
91 | 0 |
                     setSoTimeout(1);
92 |  |
                 else
93 | 0 |
                     setSoTimeout((int) timeout);
94 |  |
95 |  |
                 // FYI: message data is truncated if biger than this buffer.
96 | 0 |
                 final byte data[] = new byte[DEFAULT_BUFFER_SIZE];
97 | 0 |
                 final DatagramPacket packet = new DatagramPacket(data, data.length);
98 | 0 |
                 socket.receive(packet);
99 |  |
100 |  |
                 // A FilterPacket is used to provide the UdpDatagramContext via narrow.
101 | 0 |
                 return new UDPFilterPacket(new ByteArrayPacket(data, 0, packet.getLength()), packet);
102 |  |
103 |  |
             } catch (SocketTimeoutException e) {
104 | 0 |
                 return null;
105 |  |
             }
106 |  |
         }
107 |  |
108 | 0 |
         private void setSoTimeout(int i) throws SocketException {
109 | 0 |
             if (curentSoTimeout != i) {
110 | 0 |
                 socket.setSoTimeout(i);
111 | 0 |
                 curentSoTimeout = i;
112 |  |
             }
113 |  |
         }
114 |  |
115 |  |
         /**
116 |  |
          * @see org.activeio.Channel#write(org.activeio.channel.Packet)
117 |  |
          */
118 | 0 |
         public void write(org.activeio.Packet packet) throws IOException {
119 | 0 |
             ByteSequence sequence = packet.asByteSequence();
120 |  |
121 | 0 |
             DatagramContext context = (DatagramContext) packet.narrow(DatagramContext.class);
122 | 0 |
             if( context!=null ) {
123 | 0 |
                 socket.send(new DatagramPacket(sequence.getData(),sequence.getOffset(), sequence.getLength(), context.address, context.port.intValue()));
124 |  |
             } else {
125 | 0 |
                 socket.send(new DatagramPacket(sequence.getData(),sequence.getOffset(), sequence.getLength()));
126 |  |
             }
127 |  |
         }
128 |  |
129 |  |
         /**
130 |  |
          * @see org.activeio.Channel#flush()
131 |  |
          */
132 | 0 |
         public void flush() throws IOException {
133 |  |
         }
134 |  |
135 |  |
         /**
136 |  |
          * @see org.activeio.Disposable#dispose()
137 |  |
          */
138 | 0 |
         public void dispose() {
139 | 0 |
             if (disposed)
140 | 0 |
                 return;
141 | 0 |
             socket.close();
142 | 0 |
             disposed = true;
143 |  |
         }
144 |  |
145 | 0 |
         public void start() throws IOException {
146 |  |
         }
147 |  |
148 | 0 |
         public void stop(long timeout) throws IOException {
149 |  |
         }
150 |  |
151 |  |
152 | 0 |
         public Object narrow(Class target) {
153 | 0 |
             if( target.isAssignableFrom(getClass()) ) {
154 | 0 |
                 return this;
155 |  |
             }
156 | 0 |
             return null;
157 |  |
         }
158 |  |
159 | 0 |
         public String toString() {
160 | 0 |
             return "Datagram Connection: "+socket.getLocalSocketAddress()+" -> "+socket.getRemoteSocketAddress();
161 |  |
         }
162 |  |
     }