From 063284837c8c366e5502b1b0264b8eb807b61732 Mon Sep 17 00:00:00 2001 From: Joe Robinson Date: Wed, 27 Oct 2010 14:21:09 +0100 Subject: Basic upload functionality to predifined location, with basic file browser --- .../commons/net/daytime/DaytimeTCPClient.java | 92 ++++++++++++++++++++++ .../commons/net/daytime/DaytimeUDPClient.java | 84 ++++++++++++++++++++ 2 files changed, 176 insertions(+) create mode 100644 org/apache/commons/net/daytime/DaytimeTCPClient.java create mode 100644 org/apache/commons/net/daytime/DaytimeUDPClient.java (limited to 'org/apache/commons/net/daytime') diff --git a/org/apache/commons/net/daytime/DaytimeTCPClient.java b/org/apache/commons/net/daytime/DaytimeTCPClient.java new file mode 100644 index 0000000..a77c8c1 --- /dev/null +++ b/org/apache/commons/net/daytime/DaytimeTCPClient.java @@ -0,0 +1,92 @@ +/* + * 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.commons.net.daytime; + +import java.io.BufferedReader; +import java.io.IOException; +import java.io.InputStreamReader; + +import org.apache.commons.net.SocketClient; + +/*** + * The DaytimeTCPClient class is a TCP implementation of a client for the + * Daytime protocol described in RFC 867. To use the class, merely + * establish a connection with + * {@link org.apache.commons.net.SocketClient#connect connect } + * and call {@link #getTime getTime() } to retrieve the daytime + * string, then + * call {@link org.apache.commons.net.SocketClient#disconnect disconnect } + * to close the connection properly. + *

+ *

+ * @author Daniel F. Savarese + * @see DaytimeUDPClient + ***/ + +public final class DaytimeTCPClient extends SocketClient +{ + /*** The default daytime port. It is set to 13 according to RFC 867. ***/ + public static final int DEFAULT_PORT = 13; + + // Received dates will likely be less than 64 characters. + // This is a temporary buffer used while receiving data. + private char[] __buffer = new char[64]; + + /*** + * The default DaytimeTCPClient constructor. It merely sets the default + * port to DEFAULT_PORT . + ***/ + public DaytimeTCPClient () + { + setDefaultPort(DEFAULT_PORT); + } + + /*** + * Retrieves the time string from the server and returns it. The + * server will have closed the connection at this point, so you should + * call + * {@link org.apache.commons.net.SocketClient#disconnect disconnect } + * after calling this method. To retrieve another time, you must + * initiate another connection with + * {@link org.apache.commons.net.SocketClient#connect connect } + * before calling getTime() again. + *

+ * @return The time string retrieved from the server. + * @exception IOException If an error occurs while fetching the time string. + ***/ + public String getTime() throws IOException + { + int read; + StringBuffer result = new StringBuffer(__buffer.length); + BufferedReader reader; + + reader = new BufferedReader(new InputStreamReader(_input_)); + + while (true) + { + read = reader.read(__buffer, 0, __buffer.length); + if (read <= 0) + break; + result.append(__buffer, 0, read); + } + + return result.toString(); + } + +} + diff --git a/org/apache/commons/net/daytime/DaytimeUDPClient.java b/org/apache/commons/net/daytime/DaytimeUDPClient.java new file mode 100644 index 0000000..64eef9d --- /dev/null +++ b/org/apache/commons/net/daytime/DaytimeUDPClient.java @@ -0,0 +1,84 @@ +/* + * 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.commons.net.daytime; + +import java.io.IOException; +import java.net.DatagramPacket; +import java.net.InetAddress; + +import org.apache.commons.net.DatagramSocketClient; + +/*** + * The DaytimeUDPClient class is a UDP implementation of a client for the + * Daytime protocol described in RFC 867. To use the class, merely + * open a local datagram socket with + * {@link org.apache.commons.net.DatagramSocketClient#open open } + * and call {@link #getTime getTime } to retrieve the daytime + * string, then + * call {@link org.apache.commons.net.DatagramSocketClient#close close } + * to close the connection properly. Unlike + * {@link org.apache.commons.net.daytime.DaytimeTCPClient}, + * successive calls to {@link #getTime getTime } are permitted + * without re-establishing a connection. That is because UDP is a + * connectionless protocol and the Daytime protocol is stateless. + *

+ *

+ * @author Daniel F. Savarese + * @see DaytimeTCPClient + ***/ + +public final class DaytimeUDPClient extends DatagramSocketClient +{ + /*** The default daytime port. It is set to 13 according to RFC 867. ***/ + public static final int DEFAULT_PORT = 13; + + private byte[] __dummyData = new byte[1]; + // Received dates should be less than 256 bytes + private byte[] __timeData = new byte[256]; + + /*** + * Retrieves the time string from the specified server and port and + * returns it. + *

+ * @param host The address of the server. + * @param port The port of the service. + * @return The time string. + * @exception IOException If an error occurs while retrieving the time. + ***/ + public String getTime(InetAddress host, int port) throws IOException + { + DatagramPacket sendPacket, receivePacket; + + sendPacket = + new DatagramPacket(__dummyData, __dummyData.length, host, port); + receivePacket = new DatagramPacket(__timeData, __timeData.length); + + _socket_.send(sendPacket); + _socket_.receive(receivePacket); + + return new String(receivePacket.getData(), 0, receivePacket.getLength()); + } + + /*** Same as getTime(host, DaytimeUDPClient.DEFAULT_PORT); ***/ + public String getTime(InetAddress host) throws IOException + { + return getTime(host, DEFAULT_PORT); + } + +} + -- cgit v1.2.3