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 org.apache.commons.net.examples.telnet; 019 020import java.io.IOException; 021 022import org.apache.commons.net.examples.util.IOUtil; 023import org.apache.commons.net.telnet.TelnetClient; 024 025/** 026 * 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 027 * 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 028 * 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 029 * TelnetClient class used by itself is mostly intended for automating access to telnet resources rather than interactive use. 030 */ 031 032// This class requires the IOUtil support class! 033public final class WeatherTelnet { 034 035 public static void main(final String[] args) { 036 final TelnetClient telnet; 037 038 telnet = new TelnetClient(); 039 040 try { 041 telnet.connect("rainmaker.wunderground.com", 3000); 042 } catch (final IOException e) { 043 e.printStackTrace(); 044 System.exit(1); 045 } 046 047 IOUtil.readWrite(telnet.getInputStream(), telnet.getOutputStream(), System.in, System.out); 048 049 try { 050 telnet.disconnect(); 051 } catch (final IOException e) { 052 e.printStackTrace(); 053 System.exit(1); 054 } 055 056 System.exit(0); 057 } 058 059}