85 lines
2.9 KiB
Java
85 lines
2.9 KiB
Java
/*
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This file is part of Peers, a java SIP softphone.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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Copyright 2007, 2008, 2009, 2010 Yohann Martineau
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*/
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package peers.sip.transport;
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import java.io.IOException;
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import java.net.DatagramPacket;
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import java.net.DatagramSocket;
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import java.net.SocketTimeoutException;
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import java.security.AccessController;
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import java.security.PrivilegedAction;
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import org.pmw.tinylog.Logger;
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import peers.Config;
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import peers.sip.RFC3261;
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import peers.sip.transaction.TransactionManager;
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public class UdpMessageReceiver extends MessageReceiver {
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private final DatagramSocket datagramSocket;
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public UdpMessageReceiver(DatagramSocket datagramSocket,
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TransactionManager transactionManager,
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TransportManager transportManager, Config config) {
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super(datagramSocket.getLocalPort(), transactionManager,
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transportManager, config);
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this.datagramSocket = datagramSocket;
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}
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@Override
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protected void listen() throws IOException {
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byte[] buf = new byte[BUFFER_SIZE];
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final DatagramPacket packet = new DatagramPacket(buf, buf.length);
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final int noException = 0;
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final int socketTimeoutException = 1;
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final int ioException = 2;
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// AccessController.doPrivileged added for plugin compatibility
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int result = AccessController.doPrivileged(
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(PrivilegedAction<Integer>) () -> {
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try {
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datagramSocket.receive(packet);
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} catch (SocketTimeoutException e) {
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return socketTimeoutException;
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} catch (IOException e) {
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Logger.error("cannot receive packet", e);
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return ioException;
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}
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return noException;
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});
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switch (result) {
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case socketTimeoutException:
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return;
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case ioException:
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throw new IOException();
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default:
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break;
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}
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byte[] trimmedPacket = new byte[packet.getLength()];
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System.arraycopy(packet.getData(), 0,
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trimmedPacket, 0, trimmedPacket.length);
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processMessage(trimmedPacket, packet.getAddress(),
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packet.getPort(), RFC3261.TRANSPORT_UDP);
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}
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}
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