    001/*
    002 * Licensed to the Apache Software Foundation (ASF) under one or more
    003 * contributor license agreements.  See the NOTICE file distributed with
    004 * this work for additional information regarding copyright ownership.
    005 * The ASF licenses this file to You under the Apache License, Version 2.0
    006 * (the "License"); you may not use this file except in compliance with
    007 * the License.  You may obtain a copy of the License at
    008 *
    009 *      http://www.apache.org/licenses/LICENSE-2.0
    010 *
    011 * Unless required by applicable law or agreed to in writing, software
    012 * distributed under the License is distributed on an "AS IS" BASIS,
    013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    014 * See the License for the specific language governing permissions and
    015 * limitations under the License.
    016 */
    017
    018package org.apache.commons.net.discard;
    019
    020import java.io.OutputStream;
    021
    022import org.apache.commons.net.SocketClient;
    023
    024/**
    025 * The DiscardTCPClient class is a TCP implementation of a client for the
    026 * Discard protocol described in RFC 863.  To use the class, merely
    027 * establish a connection with
    028 * {@link org.apache.commons.net.SocketClient#connect  connect }
    029 * and call {@link #getOutputStream  getOutputStream() } to
    030 * retrieve the discard output stream.  Don't close the output stream
    031 * when you're done writing to it.  Rather, call
    032 * {@link org.apache.commons.net.SocketClient#disconnect  disconnect }
    033 * to clean up properly.
    034 *
    035 * @see DiscardUDPClient
    036 */
    037
    038public class DiscardTCPClient extends SocketClient
    039{
    040    /** The default discard port.  It is set to 9 according to RFC 863. */
    041    public static final int DEFAULT_PORT = 9;
    042
    043    /**
    044     * The default DiscardTCPClient constructor.  It merely sets the default
    045     * port to <code> DEFAULT_PORT </code>.
    046     */
    047    public DiscardTCPClient ()
    048    {
    049        setDefaultPort(DEFAULT_PORT);
    050    }
    051
    052    /**
    053     * Returns an OutputStream through which you may write data to the server.
    054     * You should NOT close the OutputStream when you're finished
    055     * reading from it.  Rather, you should call
    056     * {@link org.apache.commons.net.SocketClient#disconnect  disconnect }
    057     * to clean up properly.
    058     *
    059     * @return An OutputStream through which you can write data to the server.
    060     */
    061    public OutputStream getOutputStream()
    062    {
    063        return _output_;
    064    }
    065}