net.sourceforge.peers.sip.transport.UdpMessageSender Maven / Gradle / Ivy

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/*
    This file is part of Peers, a java SIP softphone.

    This program 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
    any later version.

    This program 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 this program.  If not, see .
    
    Copyright 2007, 2008, 2009, 2010 Yohann Martineau 
 */

package net.sourceforge.peers.sip.transport;

import java.io.IOException;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;
import java.net.SocketException;
import java.security.AccessController;
import java.security.PrivilegedAction;

import net.sourceforge.peers.Config;
import net.sourceforge.peers.Logger;
import net.sourceforge.peers.sip.RFC3261;

public class UdpMessageSender extends MessageSender {

	private DatagramSocket datagramSocket;

	public UdpMessageSender(InetAddress inetAddress, int port,
			DatagramSocket datagramSocket, Config config, Logger logger)
			throws SocketException {
		super(datagramSocket.getLocalPort(), inetAddress, port, config,
				RFC3261.TRANSPORT_UDP, logger);
		this.datagramSocket = datagramSocket;
	}

	@Override
	public synchronized void sendMessage(SipMessage sipMessage)
			throws IOException {
		logger.debug("UdpMessageSender.sendMessage");
		if (sipMessage == null) {
			return;
		}
		byte[] buf = sipMessage.toString().getBytes();
		sendBytes(buf);
		StringBuffer direction = new StringBuffer();
		direction.append("SENT to ").append(inetAddress.getHostAddress());
		direction.append("/").append(port);
		logger.traceNetwork(new String(buf), direction.toString());
	}

	@Override
	public synchronized void sendBytes(byte[] bytes) throws IOException {
		logger.debug("UdpMessageSender.sendBytes");
		final DatagramPacket packet = new DatagramPacket(bytes, bytes.length,
				inetAddress, port);
		logger.debug("UdpMessageSender.sendBytes " + bytes.length + " "
				+ inetAddress + ":" + port);
		// AccessController.doPrivileged added for plugin compatibility
		AccessController.doPrivileged(new PrivilegedAction() {

			@Override
			public Void run() {
				try {
					if (null == datagramSocket || datagramSocket.isClosed()) {
						logger.error("datagramSocket is null or closed !");
					} else {
						datagramSocket.send(packet);
					}
				} catch (Throwable t) {
					logger.error("throwable", new Exception(t));
				}
				return null;
			}
		});

		logger.debug("UdpMessageSender.sendBytes packet sent");
	}

}