/**
* Global Sensor Networks (GSN) Source Code
* Copyright (c) 2006-2016, Ecole Polytechnique Federale de Lausanne (EPFL)
*
* This file is part of GSN.
*
* GSN is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GSN is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GSN. If not, see <http://www.gnu.org/licenses/>.
*
* File: src/ch/epfl/gsn/networking/ActionPort.java
*
* @author Timotee Maret
* @author Ali Salehi
*
*/
package ch.epfl.gsn.networking;
import java.io.IOException;
import java.net.InetAddress;
import java.net.ServerSocket;
import java.net.Socket;
import java.net.SocketTimeoutException;
import org.slf4j.LoggerFactory;
import ch.epfl.gsn.utils.ValidityTools;
import org.slf4j.Logger;
public class ActionPort {
public static void listen(final int port,final NetworkAction action){
Thread t = new Thread(){
ServerSocket ss;
Logger logger = LoggerFactory.getLogger ( this.getClass() );
{
try {
ss = new ServerSocket(port, 0, InetAddress.getByName("localhost"));
}
catch (Exception e) {
logger.error (e.getMessage(), e) ;
}
}
public void run () {
boolean running = true;
while (running ) {
try {
Socket socket = ss.accept();
logger.debug("Opened connection on control socket.");
socket.setSoTimeout(30000);
// Only connections from localhost are allowed
if (ValidityTools.isLocalhost(socket.getInetAddress().getHostAddress()) == false) {
try {
logger.warn("Connection request from IP address >" + socket.getInetAddress().getHostAddress() + "< was denied.");
socket.close();
} catch (IOException ioe) {
// do nothing
}
continue;
}
running = action.actionPerformed(socket);
} catch (SocketTimeoutException e) {
logger.debug("Connection timed out. Message was: " + e.getMessage());
} catch (IOException e) {
logger.warn("Error while accepting control connection: " + e.getMessage());
}
}
}
};
t.start();
}
}