1/* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 18package org.apache.harmony.luni.internal.net.www.protocol.ftp; 19 20import java.io.IOException; 21import java.net.Proxy; 22import java.net.URL; 23import java.net.URLConnection; 24import java.net.URLStreamHandler; 25 26import org.apache.harmony.luni.util.Msg; 27 28public class Handler extends URLStreamHandler { 29 /** 30 * Open a URLConnection on the given URL. 31 */ 32 @Override 33 protected URLConnection openConnection(URL u) throws IOException { 34 return new FtpURLConnection(u); 35 } 36 37 /** 38 * Returns a connection, which is established via the <code>proxy</code>, 39 * to the FTP server specified by this <code>URL</code>. If 40 * <code>proxy</code> is DIRECT type, the connection is made in normal 41 * way. 42 * 43 * @param u 44 * the URL which the connection is pointing to 45 * @param proxy 46 * the proxy which is used to make the connection 47 * @return a connection to the resource pointed by this url. 48 * 49 * @throws IOException 50 * if this handler fails to establish a connection. 51 * @throws IllegalArgumentException 52 * if any argument is null or the type of proxy is wrong. 53 * @throws UnsupportedOperationException 54 * if the protocol handler doesn't support this method. 55 */ 56 @Override 57 protected URLConnection openConnection(URL u, Proxy proxy) 58 throws IOException { 59 if (null == u || null == proxy) { 60 throw new IllegalArgumentException(Msg.getString("K034b")); //$NON-NLS-1$ 61 } 62 return new FtpURLConnection(u, proxy); 63 } 64 65 /** 66 * Return the default port. 67 */ 68 @Override 69 protected int getDefaultPort() { 70 return 21; 71 } 72} 73