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| examples.daytime |
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| 1 | /* |
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| 2 | * Copyright 2001-2005 The Apache Software Foundation |
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| 3 | * |
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| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
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| 5 | * you may not use this file except in compliance with the License. |
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| 6 | * You may obtain a copy of the License at |
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| 7 | * |
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| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
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| 9 | * |
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| 10 | * Unless required by applicable law or agreed to in writing, software |
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| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
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| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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| 13 | * See the License for the specific language governing permissions and |
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| 14 | * limitations under the License. |
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| 15 | */ |
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| 16 | package examples; |
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| 17 | ||
| 18 | import java.io.IOException; |
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| 19 | import java.net.InetAddress; |
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| 20 | import org.apache.commons.net.DaytimeTCPClient; |
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| 21 | import org.apache.commons.net.DaytimeUDPClient; |
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| 22 | ||
| 23 | /*** |
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| 24 | * This is an example program demonstrating how to use the DaytimeTCP |
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| 25 | * and DaytimeUDP classes. |
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| 26 | * This program connects to the default daytime service port of a |
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| 27 | * specified server, retrieves the daytime, and prints it to standard output. |
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| 28 | * The default is to use the TCP port. Use the -udp flag to use the UDP |
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| 29 | * port. |
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| 30 | * <p> |
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| 31 | * Usage: daytime [-udp] <hostname> |
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| 32 | * <p> |
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| 33 | ***/ |
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| 34 | 0 | public final class daytime |
| 35 | { |
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| 36 | ||
| 37 | public static final void daytimeTCP(String host) throws IOException |
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| 38 | { |
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| 39 | 0 | DaytimeTCPClient client = new DaytimeTCPClient(); |
| 40 | ||
| 41 | // We want to timeout if a response takes longer than 60 seconds |
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| 42 | 0 | client.setDefaultTimeout(60000); |
| 43 | 0 | client.connect(host); |
| 44 | 0 | System.out.println(client.getTime().trim()); |
| 45 | 0 | client.disconnect(); |
| 46 | 0 | } |
| 47 | ||
| 48 | public static final void daytimeUDP(String host) throws IOException |
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| 49 | { |
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| 50 | 0 | DaytimeUDPClient client = new DaytimeUDPClient(); |
| 51 | ||
| 52 | // We want to timeout if a response takes longer than 60 seconds |
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| 53 | 0 | client.setDefaultTimeout(60000); |
| 54 | 0 | client.open(); |
| 55 | 0 | System.out.println(client.getTime( |
| 56 | InetAddress.getByName(host)).trim()); |
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| 57 | 0 | client.close(); |
| 58 | 0 | } |
| 59 | ||
| 60 | ||
| 61 | public static final void main(String[] args) |
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| 62 | { |
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| 63 | ||
| 64 | 0 | if (args.length == 1) |
| 65 | { |
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| 66 | try |
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| 67 | { |
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| 68 | 0 | daytimeTCP(args[0]); |
| 69 | } |
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| 70 | 0 | catch (IOException e) |
| 71 | { |
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| 72 | 0 | e.printStackTrace(); |
| 73 | 0 | System.exit(1); |
| 74 | 0 | } |
| 75 | } |
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| 76 | 0 | else if (args.length == 2 && args[0].equals("-udp")) |
| 77 | { |
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| 78 | try |
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| 79 | { |
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| 80 | 0 | daytimeUDP(args[1]); |
| 81 | } |
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| 82 | 0 | catch (IOException e) |
| 83 | { |
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| 84 | 0 | e.printStackTrace(); |
| 85 | 0 | System.exit(1); |
| 86 | 0 | } |
| 87 | } |
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| 88 | else |
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| 89 | { |
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| 90 | 0 | System.err.println("Usage: daytime [-udp] <hostname>"); |
| 91 | 0 | System.exit(1); |
| 92 | } |
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| 93 | ||
| 94 | 0 | } |
| 95 | ||
| 96 | } |
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| 97 |
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