| /* |
| * 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.commons.net.examples.util; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import org.apache.commons.net.io.Util; |
| |
| /*** |
| * This is a utility class providing a reader/writer capability required |
| * by the weatherTelnet, rexec, rshell, and rlogin example programs. |
| * The only point of the class is to hold the static method readWrite |
| * which spawns a reader thread and a writer thread. The reader thread |
| * reads from a local input source (presumably stdin) and writes the |
| * data to a remote output destination. The writer thread reads from |
| * a remote input source and writes to a local output destination. |
| * The threads terminate when the remote input source closes. |
| ***/ |
| |
| public final class IOUtil |
| { |
| |
| public static final void readWrite(final InputStream remoteInput, |
| final OutputStream remoteOutput, |
| final InputStream localInput, |
| final OutputStream localOutput) |
| { |
| Thread reader, writer; |
| |
| reader = new Thread() |
| { |
| @Override |
| public void run() |
| { |
| int ch; |
| |
| try |
| { |
| while (!interrupted() && (ch = localInput.read()) != -1) |
| { |
| remoteOutput.write(ch); |
| remoteOutput.flush(); |
| } |
| } |
| catch (IOException e) |
| { |
| //e.printStackTrace(); |
| } |
| } |
| } |
| ; |
| |
| |
| writer = new Thread() |
| { |
| @Override |
| public void run() |
| { |
| try |
| { |
| Util.copyStream(remoteInput, localOutput); |
| } |
| catch (IOException e) |
| { |
| e.printStackTrace(); |
| System.exit(1); |
| } |
| } |
| }; |
| |
| |
| writer.setPriority(Thread.currentThread().getPriority() + 1); |
| |
| writer.start(); |
| reader.setDaemon(true); |
| reader.start(); |
| |
| try |
| { |
| writer.join(); |
| reader.interrupt(); |
| } |
| catch (InterruptedException e) |
| { |
| // Ignored |
| } |
| } |
| |
| } |
| |