| | |
| | | /* |
| | | * Copyright 2011-17 Fraunhofer ISE, energy & meteo Systems GmbH and other contributors |
| | | * |
| | | * 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 org.openmuc.josistack; |
| | | |
| | | import java.io.IOException; |
| | | import java.net.InetAddress; |
| | | import java.nio.ByteBuffer; |
| | | import java.util.concurrent.TimeoutException; |
| | | |
| | | import javax.net.ServerSocketFactory; |
| | | |
| | | import org.openmuc.jositransport.ServerTSap; |
| | | import org.openmuc.jositransport.TConnection; |
| | | import org.openmuc.jositransport.TConnectionListener; |
| | | |
| | | /** |
| | | * This class implements the server Service Access Point (SAP) for the Application Control Service Element (ACSE) |
| | | * protocol as defined by ISO 8650 or ITU X.217/X.227. The ACSE provides services for establishing and releasing |
| | | * application-associations. The class also realizes the lower ISO Presentation Layer as defined by ISO 8823/ITU X226 |
| | | * and the ISO Session Layer as defined by 8327/ITU X.225. |
| | | * |
| | | */ |
| | | public final class ServerAcseSap implements TConnectionListener { |
| | | |
| | | private AcseAssociationListener associationListener = null; |
| | | public ServerTSap serverTSap = null; |
| | | |
| | | public byte[] pSelLocal = ClientAcseSap.P_SEL_DEFAULT; |
| | | |
| | | /** |
| | | * Use this constructor to create a server ACSE SAP that listens on a fixed port. |
| | | * |
| | | * @param port |
| | | * the local port listen on |
| | | * @param backlog |
| | | * the backlog |
| | | * @param bindAddr |
| | | * the InetAddress to bind to |
| | | * @param associationListener |
| | | * the AssociationListener that will be notified when remote clients have associated. Once constructed |
| | | * the AcseSAP contains a public TSAP that can be accessed to set its configuration. |
| | | */ |
| | | public ServerAcseSap(int port, int backlog, InetAddress bindAddr, AcseAssociationListener associationListener) { |
| | | this(port, backlog, bindAddr, associationListener, ServerSocketFactory.getDefault()); |
| | | } |
| | | |
| | | /** |
| | | * Use this constructor to create a server ACSE SAP that listens on a fixed port. The server socket is created with |
| | | * the given socket factory. |
| | | * |
| | | * @param port |
| | | * the local port listen on |
| | | * @param backlog |
| | | * the backlog |
| | | * @param bindAddr |
| | | * the InetAddress to bind to |
| | | * @param associationListener |
| | | * the AssociationListener that will be notified when remote clients have associated. Once constructed |
| | | * the AcseSAP contains a public TSAP that can be accessed to set its configuration. |
| | | * @param serverSocketFactory |
| | | * the server socket factory to create the socket |
| | | */ |
| | | public ServerAcseSap(int port, int backlog, InetAddress bindAddr, AcseAssociationListener associationListener, |
| | | ServerSocketFactory serverSocketFactory) { |
| | | this.associationListener = associationListener; |
| | | serverTSap = new ServerTSap(port, backlog, bindAddr, this, serverSocketFactory); |
| | | } |
| | | |
| | | /** |
| | | * Start listening for incoming connections. Only for server SAPs. |
| | | * |
| | | * @throws IOException |
| | | * if an error occures starting to listen |
| | | */ |
| | | public void startListening() throws IOException { |
| | | if (associationListener == null || serverTSap == null) { |
| | | throw new IllegalStateException("AcseSAP is unable to listen because it was not initialized."); |
| | | } |
| | | serverTSap.startListening(); |
| | | } |
| | | |
| | | public void stopListening() { |
| | | serverTSap.stopListening(); |
| | | } |
| | | |
| | | /** |
| | | * This function is internal and should not be called by users of this class. |
| | | */ |
| | | @Override |
| | | public void serverStoppedListeningIndication(IOException e) { |
| | | associationListener.serverStoppedListeningIndication(e); |
| | | } |
| | | |
| | | /** |
| | | * This function is internal and should not be called by users of this class. |
| | | * |
| | | */ |
| | | @Override |
| | | public void connectionIndication(TConnection tConnection) { |
| | | |
| | | try { |
| | | |
| | | AcseAssociation acseAssociation = new AcseAssociation(tConnection, pSelLocal); |
| | | |
| | | ByteBuffer asdu = ByteBuffer.allocate(1000); |
| | | try { |
| | | asdu = acseAssociation.listenForCn(asdu); |
| | | } catch (IOException e) { |
| | | // Server: Connection unsuccessful. |
| | | tConnection.close(); |
| | | return; |
| | | } catch (TimeoutException e) { |
| | | // Illegal state: Timeout should not occur here |
| | | tConnection.close(); |
| | | return; |
| | | } |
| | | |
| | | associationListener.connectionIndication(acseAssociation, asdu); |
| | | |
| | | } catch (Exception e) { |
| | | // Association closed because of an unexpected exception. |
| | | tConnection.close(); |
| | | } |
| | | |
| | | } |
| | | } |
| | | /*
|
| | | * Copyright 2011-17 Fraunhofer ISE, energy & meteo Systems GmbH and other contributors
|
| | | *
|
| | | * 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 org.openmuc.josistack;
|
| | |
|
| | | import java.io.IOException;
|
| | | import java.net.InetAddress;
|
| | | import java.nio.ByteBuffer;
|
| | | import java.util.concurrent.TimeoutException;
|
| | |
|
| | | import javax.net.ServerSocketFactory;
|
| | |
|
| | | import org.openmuc.jositransport.ServerTSap;
|
| | | import org.openmuc.jositransport.TConnection;
|
| | | import org.openmuc.jositransport.TConnectionListener;
|
| | |
|
| | | /**
|
| | | * This class implements the server Service Access Point (SAP) for the Application Control Service Element (ACSE)
|
| | | * protocol as defined by ISO 8650 or ITU X.217/X.227. The ACSE provides services for establishing and releasing
|
| | | * application-associations. The class also realizes the lower ISO Presentation Layer as defined by ISO 8823/ITU X226
|
| | | * and the ISO Session Layer as defined by 8327/ITU X.225.
|
| | | * |
| | | */
|
| | | public final class ServerAcseSap implements TConnectionListener {
|
| | |
|
| | | private AcseAssociationListener associationListener = null;
|
| | | public ServerTSap serverTSap = null;
|
| | |
|
| | | public byte[] pSelLocal = ClientAcseSap.P_SEL_DEFAULT;
|
| | |
|
| | | /**
|
| | | * Use this constructor to create a server ACSE SAP that listens on a fixed port.
|
| | | * |
| | | * @param port
|
| | | * the local port listen on
|
| | | * @param backlog
|
| | | * the backlog
|
| | | * @param bindAddr
|
| | | * the InetAddress to bind to
|
| | | * @param associationListener
|
| | | * the AssociationListener that will be notified when remote clients have associated. Once constructed
|
| | | * the AcseSAP contains a public TSAP that can be accessed to set its configuration.
|
| | | */
|
| | | public ServerAcseSap(int port, int backlog, InetAddress bindAddr, AcseAssociationListener associationListener) {
|
| | | this(port, backlog, bindAddr, associationListener, ServerSocketFactory.getDefault());
|
| | | }
|
| | |
|
| | | /**
|
| | | * Use this constructor to create a server ACSE SAP that listens on a fixed port. The server socket is created with
|
| | | * the given socket factory.
|
| | | * |
| | | * @param port
|
| | | * the local port listen on
|
| | | * @param backlog
|
| | | * the backlog
|
| | | * @param bindAddr
|
| | | * the InetAddress to bind to
|
| | | * @param associationListener
|
| | | * the AssociationListener that will be notified when remote clients have associated. Once constructed
|
| | | * the AcseSAP contains a public TSAP that can be accessed to set its configuration.
|
| | | * @param serverSocketFactory
|
| | | * the server socket factory to create the socket
|
| | | */
|
| | | public ServerAcseSap(int port, int backlog, InetAddress bindAddr, AcseAssociationListener associationListener,
|
| | | ServerSocketFactory serverSocketFactory) {
|
| | | this.associationListener = associationListener;
|
| | | serverTSap = new ServerTSap(port, backlog, bindAddr, this, serverSocketFactory);
|
| | | }
|
| | |
|
| | | /**
|
| | | * Start listening for incoming connections. Only for server SAPs.
|
| | | * |
| | | * @throws IOException
|
| | | * if an error occures starting to listen
|
| | | */
|
| | | public void startListening() throws IOException {
|
| | | if (associationListener == null || serverTSap == null) {
|
| | | throw new IllegalStateException("AcseSAP is unable to listen because it was not initialized.");
|
| | | }
|
| | | serverTSap.startListening();
|
| | | }
|
| | |
|
| | | public void stopListening() {
|
| | | serverTSap.stopListening();
|
| | | }
|
| | |
|
| | | /**
|
| | | * This function is internal and should not be called by users of this class.
|
| | | */
|
| | | @Override
|
| | | public void serverStoppedListeningIndication(IOException e) {
|
| | | associationListener.serverStoppedListeningIndication(e);
|
| | | }
|
| | |
|
| | | /**
|
| | | * This function is internal and should not be called by users of this class.
|
| | | * |
| | | */
|
| | | @Override
|
| | | public void connectionIndication(TConnection tConnection) {
|
| | |
|
| | | try {
|
| | |
|
| | | AcseAssociation acseAssociation = new AcseAssociation(tConnection, pSelLocal);
|
| | |
|
| | | ByteBuffer asdu = ByteBuffer.allocate(1000);
|
| | | try {
|
| | | asdu = acseAssociation.listenForCn(asdu);
|
| | | } catch (IOException e) {
|
| | | // Server: Connection unsuccessful.
|
| | | tConnection.close();
|
| | | return;
|
| | | } catch (TimeoutException e) {
|
| | | // Illegal state: Timeout should not occur here
|
| | | tConnection.close();
|
| | | return;
|
| | | }
|
| | |
|
| | | associationListener.connectionIndication(acseAssociation, asdu);
|
| | |
|
| | | } catch (Exception e) {
|
| | | // Association closed because of an unexpected exception.
|
| | | tConnection.close();
|
| | | }
|
| | |
|
| | | }
|
| | | }
|