/*
* Copyright 2004-2006 the original author or authors.
*
* Licensed 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 net.sf.cindy.example.telnet;
import java.io.IOException;
import java.net.InetSocketAddress;
import net.sf.cindy.Buffer;
import net.sf.cindy.Packet;
import net.sf.cindy.PacketDecoder;
import net.sf.cindy.Session;
import net.sf.cindy.SessionHandlerAdapter;
import net.sf.cindy.SessionType;
import net.sf.cindy.buffer.BufferFactory;
import net.sf.cindy.encoder.BufferEncoder;
import net.sf.cindy.session.SessionFactory;
import net.sf.cindy.util.Charset;
/**
* Simple telnet program, support TCP and UDP.
*
* @author <a href="chenrui@gmail.com">Roger Chen</a>
* @version $id$
*/
public class Telnet {
public static void main(String[] args) throws IOException {
if (args.length < 3) {
System.out.println("usage: java Telnet (tcp|udp) host port");
return;
}
boolean tcp = "tcp".equalsIgnoreCase(args[0]);
String host = args[1];
int port = Integer.parseInt(args[2]);
Session session = startSession(tcp, host, port);
byte[] b = new byte[4096];
while (true) {
int count = System.in.read(b);
if (count < 0)
break;
// block send
if (!session.send(BufferFactory.wrap(b, 0, count)).complete())
break;
}
}
private static Session startSession(boolean tcp, String host, int port) {
System.out.println("start telnet using " + (tcp ? "tcp" : "udp"));
Session session = SessionFactory.createSession(tcp ? SessionType.TCP
: SessionType.UDP);
session.setRemoteAddress(new InetSocketAddress(host, port));
// set packet encoder and decoder
session.setPacketEncoder(new BufferEncoder());
session.setPacketDecoder(new PacketDecoder() {
public Object decode(Session session, Packet packet)
throws Exception {
Buffer content = packet.getContent();
return content.getString(Charset.SYSTEM, content.remaining());
}
});
// set session handler
session.setSessionHandler(new SessionHandlerAdapter() {
public void objectReceived(Session session, Object obj)
throws Exception {
System.out.println(obj);
};
});
// start session
session.start().complete();
return session;
}
}