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 package org.apache.commons.net.time;
18
19 import java.net.InetAddress;
20 import java.util.Calendar;
21 import java.io.IOException;
22 import java.util.TimeZone;
23
24 import junit.framework.TestCase;
25
26 public class TimeTCPClientTest extends TestCase
27 {
28 private TimeTestSimpleServer server1;
29
30 private int _port = 3333; // default test port
31
32 /***
33 * open connections needed for the tests for the test.
34 ***/
35 protected void openConnections() throws Exception
36 {
37 try {
38 server1 = new TimeTestSimpleServer(_port);
39 server1.connect();
40 } catch (IOException ioe)
41 {
42 // try again on another port
43 _port = 4000;
44 server1 = new TimeTestSimpleServer(_port);
45 server1.connect();
46 }
47 server1.start();
48 }
49
50 /***
51 * tests the constant basetime used by TimeClient against tha
52 * computed from Calendar class.
53 */
54 public void testInitial() {
55 TimeZone utcZone = TimeZone.getTimeZone("UTC");
56 Calendar calendar = Calendar.getInstance(utcZone);
57 calendar.set(1900, Calendar.JANUARY, 1, 0, 0, 0);
58 calendar.set(Calendar.MILLISECOND, 0);
59 long baseTime = calendar.getTime().getTime() / 1000L;
60
61 assertEquals(baseTime, -TimeTCPClient.SECONDS_1900_TO_1970);
62 }
63
64 /***
65 * tests the times retrieved via the Time protocol implementation.
66 ***/
67 public void testCompareTimes() throws Exception
68 {
69 openConnections();
70
71 long time, time2;
72 long clientTime, clientTime2;
73 try
74 {
75 TimeTCPClient client = new TimeTCPClient();
76 try
77 {
78 // We want to timeout if a response takes longer than 60 seconds
79 client.setDefaultTimeout(60000);
80 client.connect(InetAddress.getLocalHost(), _port);
81 clientTime = client.getDate().getTime();
82 time = System.currentTimeMillis();
83 } finally
84 {
85 if(client.isConnected()) {
86 client.disconnect();
87 }
88 }
89
90 try
91 {
92 // We want to timeout if a response takes longer than 60 seconds
93 client.setDefaultTimeout(60000);
94 client.connect(InetAddress.getLocalHost(), _port);
95 clientTime2 = (client.getTime() - TimeTCPClient.SECONDS_1900_TO_1970)*1000L;
96 time2 = System.currentTimeMillis();
97 } finally
98 {
99 if(client.isConnected()) {
100 client.disconnect();
101 }
102 }
103
104 } finally
105 {
106 closeConnections();
107 }
108
109 // current time shouldn't differ from time reported via network by 5 seconds
110 assertTrue(Math.abs(time - clientTime) < 5000);
111 assertTrue(Math.abs(time2 - clientTime2) < 5000);
112 }
113
114 /***
115 * closes all the connections
116 ***/
117 protected void closeConnections()
118 {
119 try
120 {
121 server1.stop();
122 Thread.sleep(1000);
123 } catch (Exception e)
124 {
125 }
126 }
127 }
128