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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   ***/
36  
37  // This class requires the IOUtil support class!
38  public final class WeatherTelnet
39  {
40  
41      public static final void main(String[] args)
42      {
43          TelnetClient telnet;
44  
45          telnet = new TelnetClient();
46  
47          try
48          {
49              telnet.connect("rainmaker.wunderground.com", 3000);
50          }
51          catch (IOException e)
52          {
53              e.printStackTrace();
54              System.exit(1);
55          }
56  
57          IOUtil.readWrite(telnet.getInputStream(), telnet.getOutputStream(),
58                           System.in, System.out);
59  
60          try
61          {
62              telnet.disconnect();
63          }
64          catch (IOException e)
65          {
66              e.printStackTrace();
67              System.exit(1);
68          }
69  
70          System.exit(0);
71      }
72  
73  }
74  
75