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 org.apache.commons.net.examples.telnet;
19
20 import java.io.IOException;
21
22 import org.apache.commons.net.examples.util.IOUtil;
23 import org.apache.commons.net.telnet.TelnetClient;
24
25 /**
26 * This is an example of a trivial use of the TelnetClient class. It connects to the weather server at the University of Michigan, um-weather.sprl.umich.edu
27 * port 3000, and allows the user to interact with the server via standard input. You could use this example to connect to any telnet server, but it is
28 * obviously not general purpose because it reads from standard input a line at a time, making it inconvenient for use with a remote interactive shell. The
29 * TelnetClient class used by itself is mostly intended for automating access to telnet resources rather than interactive use.
30 */
31
32 // This class requires the IOUtil support class!
33 public final class WeatherTelnet {
34
35 public static void main(final String[] args) {
36 final TelnetClient telnet;
37
38 telnet = new TelnetClient();
39
40 try {
41 telnet.connect("rainmaker.wunderground.com", 3000);
42 } catch (final IOException e) {
43 e.printStackTrace();
44 System.exit(1);
45 }
46
47 IOUtil.readWrite(telnet.getInputStream(), telnet.getOutputStream(), System.in, System.out);
48
49 try {
50 telnet.disconnect();
51 } catch (final IOException e) {
52 e.printStackTrace();
53 System.exit(1);
54 }
55
56 System.exit(0);
57 }
58
59 }