001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017
018package examples.telnet;
019
020import java.io.IOException;
021import org.apache.commons.net.telnet.TelnetClient;
022
023import examples.util.IOUtil;
024
025/***
026 * This is an example of a trivial use of the TelnetClient class.
027 * It connects to the weather server at the University of Michigan,
028 * um-weather.sprl.umich.edu port 3000, and allows the user to interact
029 * with the server via standard input.  You could use this example to
030 * connect to any telnet server, but it is obviously not general purpose
031 * because it reads from standard input a line at a time, making it
032 * inconvenient for use with a remote interactive shell.  The TelnetClient
033 * class used by itself is mostly intended for automating access to telnet
034 * resources rather than interactive use.
035 ***/
036
037// This class requires the IOUtil support class!
038public final class WeatherTelnet
039{
040
041    public static final void main(String[] args)
042    {
043        TelnetClient telnet;
044
045        telnet = new TelnetClient();
046
047        try
048        {
049            telnet.connect("rainmaker.wunderground.com", 3000);
050        }
051        catch (IOException e)
052        {
053            e.printStackTrace();
054            System.exit(1);
055        }
056
057        IOUtil.readWrite(telnet.getInputStream(), telnet.getOutputStream(),
058                         System.in, System.out);
059
060        try
061        {
062            telnet.disconnect();
063        }
064        catch (IOException e)
065        {
066            e.printStackTrace();
067            System.exit(1);
068        }
069
070        System.exit(0);
071    }
072
073}
074
075