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/*
* 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 libcore.net.url;
import java.io.IOException;
import java.net.Proxy;
import java.net.URL;
import java.net.URLConnection;
import java.net.URLStreamHandler;
public class FtpHandler extends URLStreamHandler {
/**
* Open a URLConnection on the given URL.
*/
@Override
protected URLConnection openConnection(URL u) throws IOException {
return new FtpURLConnection(u);
}
/**
* Returns a connection, which is established via the <code>proxy</code>,
* to the FTP server specified by this <code>URL</code>. If
* <code>proxy</code> is DIRECT type, the connection is made in normal
* way.
*
* @param url
* the URL which the connection is pointing to
* @param proxy
* the proxy which is used to make the connection
* @return a connection to the resource pointed by this url.
*
* @throws IOException
* if this handler fails to establish a connection.
* @throws IllegalArgumentException
* if any argument is null or the type of proxy is wrong.
* @throws UnsupportedOperationException
* if the protocol handler doesn't support this method.
*/
@Override
protected URLConnection openConnection(URL url, Proxy proxy) throws IOException {
if (url == null || proxy == null) {
throw new IllegalArgumentException("url == null || proxy == null");
}
return new FtpURLConnection(url, proxy);
}
/**
* Return the default port.
*/
@Override
protected int getDefaultPort() {
return 21;
}
}
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