From bbbc051aa70b8c3dc98218b7b7ca23bea588f41a Mon Sep 17 00:00:00 2001 From: Joe Robinson Date: Wed, 27 Oct 2010 17:16:37 +0100 Subject: Removed duplicate org.apache.commons files --- org/apache/commons/net/ntp/NTPUDPClient.java | 140 --------------------------- 1 file changed, 140 deletions(-) delete mode 100644 org/apache/commons/net/ntp/NTPUDPClient.java (limited to 'org/apache/commons/net/ntp/NTPUDPClient.java') diff --git a/org/apache/commons/net/ntp/NTPUDPClient.java b/org/apache/commons/net/ntp/NTPUDPClient.java deleted file mode 100644 index e1dcb57..0000000 --- a/org/apache/commons/net/ntp/NTPUDPClient.java +++ /dev/null @@ -1,140 +0,0 @@ -package org.apache.commons.net.ntp; -/* - * 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. - */ - - -import java.io.IOException; -import java.net.DatagramPacket; -import java.net.InetAddress; - -import org.apache.commons.net.DatagramSocketClient; - -/*** - * The NTPUDPClient class is a UDP implementation of a client for the - * Network Time Protocol (NTP) described in RFC 1305 as well as the - * Simple Network Time Protocol (SNTP) in RFC-2030. To use the class, - * merely open a local datagram socket with open - * and call getTime to retrieve the time. Then call - * close - * to close the connection properly. - * Successive calls to getTime are permitted - * without re-establishing a connection. That is because UDP is a - * connectionless protocol and the Network Time Protocol is stateless. - * - * @author Jason Mathews, MITRE Corp - * @version $Revision: 489397 $ $Date: 2006-12-21 16:28:51 +0000 (Thu, 21 Dec 2006) $ - ***/ - -public final class NTPUDPClient extends DatagramSocketClient -{ - /*** The default NTP port. It is set to 123 according to RFC 1305. ***/ - public static final int DEFAULT_PORT = 123; - - private int _version = NtpV3Packet.VERSION_3; - - /*** - * Retrieves the time information from the specified server and port and - * returns it. The time is the number of miliiseconds since - * 00:00 (midnight) 1 January 1900 UTC, as specified by RFC 1305. - * This method reads the raw NTP packet and constructs a TimeInfo - * object that allows access to all the fields of the NTP message header. - *

- * @param host The address of the server. - * @param port The port of the service. - * @return The time value retrieved from the server. - * @exception IOException If an error occurs while retrieving the time. - ***/ - public TimeInfo getTime(InetAddress host, int port) throws IOException - { - // if not connected then open to next available UDP port - if (!isOpen()) - { - open(); - } - - NtpV3Packet message = new NtpV3Impl(); - message.setMode(NtpV3Packet.MODE_CLIENT); - message.setVersion(_version); - DatagramPacket sendPacket = message.getDatagramPacket(); - sendPacket.setAddress(host); - sendPacket.setPort(port); - - NtpV3Packet recMessage = new NtpV3Impl(); - DatagramPacket receivePacket = recMessage.getDatagramPacket(); - - /* - * Must minimize the time between getting the current time, - * timestamping the packet, and sending it out which - * introduces an error in the delay time. - * No extraneous logging and initializations here !!! - */ - TimeStamp now = TimeStamp.getCurrentTime(); - - // Note that if you do not set the transmit time field then originating time - // in server response is all 0's which is "Thu Feb 07 01:28:16 EST 2036". - message.setTransmitTime(now); - - _socket_.send(sendPacket); - _socket_.receive(receivePacket); - - long returnTime = System.currentTimeMillis(); - // create TimeInfo message container but don't pre-compute the details yet - TimeInfo info = new TimeInfo(recMessage, returnTime, false); - - return info; - } - - /*** - * Retrieves the time information from the specified server on the - * default NTP port and returns it. The time is the number of miliiseconds - * since 00:00 (midnight) 1 January 1900 UTC, as specified by RFC 1305. - * This method reads the raw NTP packet and constructs a TimeInfo - * object that allows access to all the fields of the NTP message header. - *

- * @param host The address of the server. - * @return The time value retrieved from the server. - * @exception IOException If an error occurs while retrieving the time. - ***/ - public TimeInfo getTime(InetAddress host) throws IOException - { - return getTime(host, NtpV3Packet.NTP_PORT); - } - - /*** - * Returns the NTP protocol version number that client sets on request packet - * that is sent to remote host (e.g. 3=NTP v3, 4=NTP v4, etc.) - * - * @return the NTP protocol version number that client sets on request packet. - * @see #setVersion(int) - ***/ - public int getVersion() - { - return _version; - } - - /*** - * Sets the NTP protocol version number that client sets on request packet - * communicate with remote host. - * - * @param version the NTP protocol version number - ***/ - public void setVersion(int version) - { - _version = version; - } - -} -- cgit v1.2.3