| /* |
| * 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.ftpserver.ftplet; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| |
| /** |
| * |
| * @author <a href="http://mina.apache.org">Apache MINA Project</a> |
| */ |
| public interface DataConnection { |
| |
| /** |
| * Transfer data from the client (e.g. STOR). |
| * @param session The current {@link FtpSession} |
| * @param out |
| * The {@link OutputStream} containing the destination of the |
| * data from the client. |
| * @return The length of the transferred data |
| * @throws IOException |
| */ |
| long transferFromClient(FtpSession session, OutputStream out) |
| throws IOException; |
| |
| /** |
| * Transfer data to the client (e.g. RETR). |
| * @param session The current {@link FtpSession} |
| * @param in |
| * Data to be transfered to the client |
| * @return The length of the transferred data |
| * @throws IOException |
| */ |
| long transferToClient(FtpSession session, InputStream in) |
| throws IOException; |
| |
| /** |
| * Transfer a string to the client, e.g. during LIST |
| * @param session The current {@link FtpSession} |
| * @param str |
| * The string to transfer |
| * @throws IOException |
| */ |
| void transferToClient(FtpSession session, String str) throws IOException; |
| |
| } |