1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. 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 examples.telnet;
19
20 import java.io.IOException;
21 import org.apache.commons.net.telnet.TelnetClient;
22
23 import examples.util.IOUtil;
24
25 /***
26 * This is an example of a trivial use of the TelnetClient class.
27 * It connects to the weather server at the University of Michigan,
28 * um-weather.sprl.umich.edu port 3000, and allows the user to interact
29 * with the server via standard input. You could use this example to
30 * connect to any telnet server, but it is obviously not general purpose
31 * because it reads from standard input a line at a time, making it
32 * inconvenient for use with a remote interactive shell. The TelnetClient
33 * class used by itself is mostly intended for automating access to telnet
34 * resources rather than interactive use.
35 * <p>
36 ***/
37
38 // This class requires the IOUtil support class!
39 public final class WeatherTelnet
40 {
41
42 public final static void main(String[] args)
43 {
44 TelnetClient telnet;
45
46 telnet = new TelnetClient();
47
48 try
49 {
50 telnet.connect("rainmaker.wunderground.com", 3000);
51 }
52 catch (IOException e)
53 {
54 e.printStackTrace();
55 System.exit(1);
56 }
57
58 IOUtil.readWrite(telnet.getInputStream(), telnet.getOutputStream(),
59 System.in, System.out);
60
61 try
62 {
63 telnet.disconnect();
64 }
65 catch (IOException e)
66 {
67 e.printStackTrace();
68 System.exit(1);
69 }
70
71 System.exit(0);
72 }
73
74 }
75
76