DaytimeTCPClient.java
- /*
- * 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
- *
- * https://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 org.apache.commons.io.IOUtils;
- 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.
- *
- * @see DaytimeUDPClient
- */
- public final class DaytimeTCPClient extends SocketClient {
- /**
- * The default daytime port {@value} per RFC 867.
- */
- public static final int DEFAULT_PORT = 13;
- /**
- * The default DaytimeTCPClient constructor. It merely sets the default port to <code>DEFAULT_PORT</code>.
- */
- public DaytimeTCPClient() {
- setDefaultPort(DEFAULT_PORT);
- }
- /**
- * Gets 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 {@code getTime()} again.
- *
- * @return The time string retrieved from the server.
- * @throws IOException If an error occurs while fetching the time string.
- */
- public String getTime() throws IOException {
- return IOUtils.toString(_input_, getCharset());
- }
- }