Java tutorial
/* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.apache.common.net.examples.telnet; import org.apache.commons.net.telnet.TelnetClient; import java.io.IOException; import java.net.ConnectException; import java.util.ArrayList; import java.util.Arrays; import java.util.HashMap; import java.util.List; import java.util.Map; /** * * */ public class MyTelnetClientExample { //private static List<String> okList = new ArrayList<String>(); private static List<String> errorList = new ArrayList<String>(); private static final List<String> ips = Arrays.asList("10.69.32.32", "10.120.210.25"); private static final Map<String, String> hosts = new HashMap<String, String>(); static { hosts.put("vmwl2616.dc.mars", "10.69.32.32"); hosts.put("mtolx728.dc.mars", "10.65.42.80"); hosts.put("www.sitenka.ru", "10.100.85.146"); hosts.put("uwb01.digex.na.mars", "10.100.161.9"); hosts.put("www.sitenka.ru", "10.100.161.245"); hosts.put("marsbpos03.effem.com", "10.126.1.202"); hosts.put("auroradb.digex.na.mars", "10.100.104.9"); hosts.put("vmwl2729-nat.dc.mars", "10.120.210.25"); hosts.put("isxl1057.dc.mars", "10.121.16.49"); hosts.put("vmwl2781-nat.dc.mars", "10.65.126.21"); hosts.put("vmwl2782-nat.dc.mars", "10.120.210.27"); hosts.put("vmwl2783-nat.dc.mars", "10.120.210.28"); hosts.put("mtol1175.dc.mars", "10.69.16.131"); // hosts.put("vmwl2729-nat.dc.mars", "10.120.210.25"); } private static final List<Integer> ports = Arrays.asList(21, 22, 23, 80, 443, 7001, 7002, 7003, 7004, 7005, 7006, 7007, 7008, 7009, 7010); private static final List<Integer> onePort = Arrays.asList(22); public static void main(String[] args) { for (Map.Entry<String, String> entry : hosts.entrySet()) { for (Integer port : ports) { checkByTelnet(entry, port); } } //checkByTelnet("www.google.ru", 80); //checkByTelnet("www.google.ru", 81); System.out.println(errorList); } private static void checkByTelnet(Map.Entry<String, String> entry, int port) { String remoteHost = entry.getKey(); String remoteIp = entry.getValue(); int remotePort = port; final TelnetClient tc = new TelnetClient(); try { tc.connect(remoteHost, remotePort); } catch (ConnectException exception) { System.out.println("catch ConnectException to"); errorList.add("can't connect to " + remoteIp + "(" + remoteHost + ")" + " by port " + port); } catch (IOException e) { e.printStackTrace(); } try { tc.disconnect(); } catch (IOException e) { System.err.println("Exception while connecting:" + e.getMessage()); } } }