/*
* File Name : CreateConnectionHandle.java
*
* The JAIN MGCP API implementaion.
*
* The source code contained in this file is in in the public domain.
* It can be used in any project or product without prior permission,
* license or royalty payments. There is NO WARRANTY OF ANY KIND,
* EXPRESS, IMPLIED OR STATUTORY, INCLUDING, WITHOUT LIMITATION,
* THE IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE,
* AND DATA ACCURACY. We do not warrant or make any representations
* regarding the use of the software or the results thereof, including
* but not limited to the correctness, accuracy, reliability or
* usefulness of the software.
*/
package org.mobicents.mgcp.stack;
import jain.protocol.ip.mgcp.JainMgcpCommandEvent;
import jain.protocol.ip.mgcp.JainMgcpResponseEvent;
import jain.protocol.ip.mgcp.message.ModifyConnection;
import jain.protocol.ip.mgcp.message.ModifyConnectionResponse;
import jain.protocol.ip.mgcp.message.parms.CallIdentifier;
import jain.protocol.ip.mgcp.message.parms.ConnectionDescriptor;
import jain.protocol.ip.mgcp.message.parms.ConnectionIdentifier;
import jain.protocol.ip.mgcp.message.parms.EndpointIdentifier;
import jain.protocol.ip.mgcp.message.parms.NotificationRequestParms;
import jain.protocol.ip.mgcp.message.parms.NotifiedEntity;
import jain.protocol.ip.mgcp.message.parms.RequestIdentifier;
import jain.protocol.ip.mgcp.message.parms.ReturnCode;
import java.io.IOException;
import java.net.InetAddress;
import java.text.ParseException;
import org.apache.log4j.Logger;
import org.mobicents.mgcp.stack.parser.MgcpContentHandler;
import org.mobicents.mgcp.stack.parser.MgcpMessageParser;
import org.mobicents.mgcp.stack.parser.Utils;
/**
*
* @author Oleg Kulikov
* @author Pavel Mitrenko
* @author amit bhayani
*/
public class ModifyConnectionHandler extends TransactionHandler {
private ModifyConnection command = null;
private ModifyConnectionResponse response = null;
private static final Logger logger = Logger.getLogger(ModifyConnectionHandler.class);
/** Creates a new instance of ModifyConnectionHandler */
public ModifyConnectionHandler(JainMgcpStackImpl stack) {
super(stack);
}
public ModifyConnectionHandler(JainMgcpStackImpl stack, InetAddress address, int port) {
super(stack, address, port);
}
public JainMgcpCommandEvent decodeCommand(String message) throws ParseException {
Utils utils = utilsFactory.allocate();
MgcpMessageParser parser = new MgcpMessageParser(new CommandContentHandle(utils));
try {
parser.parse(message);
} catch (IOException e) {
logger.error("Decoding of MDCX command failed", e);
} finally {
utilsFactory.deallocate(utils);
}
NotifiedEntity notifiedEntity = command.getNotifiedEntity();
if (command.getNotifiedEntity() != null) {
this.stack.provider.setNotifiedEntity(notifiedEntity);
}
return command;
}
public JainMgcpResponseEvent decodeResponse(String message) throws ParseException {
Utils utils = utilsFactory.allocate();
MgcpMessageParser parser = new MgcpMessageParser(new ResponseContentHandle(utils));
try {
parser.parse(message);
} catch (IOException e) {
logger.error("Decoding of MDCX Response failed", e);
} finally {
utilsFactory.deallocate(utils);
}
return response;
}
public String encode(JainMgcpCommandEvent event) {
// encode message header
Utils utils = utilsFactory.allocate();
ModifyConnection evt = (ModifyConnection) event;
StringBuffer s = new StringBuffer();
s.append("MDCX ").append(evt.getTransactionHandle()).append(SINGLE_CHAR_SPACE).append(
evt.getEndpointIdentifier()).append(SINGLE_CHAR_SPACE).append(MGCP_VERSION).append(NEW_LINE);
// encode mandatory parameters
s.append("C:").append(evt.getCallIdentifier()).append(NEW_LINE);
s.append("I:").append(evt.getConnectionIdentifier()).append(NEW_LINE);
// encode optional parameters
if (evt.getBearerInformation() != null) {
s.append("B:e:").append(evt.getBearerInformation()).append(NEW_LINE);
}
if (evt.getLocalConnectionOptions() != null) {
s.append("L:").append(utils.encodeLocalOptionValueList(evt.getLocalConnectionOptions()));
}
if (evt.getMode() != null) {
s.append("M:").append(evt.getMode()).append(NEW_LINE);
}
if (evt.getNotificationRequestParms() != null) {
s.append(utils.encodeNotificationRequestParms(evt.getNotificationRequestParms()));
}
if (evt.getNotifiedEntity() != null) {
s.append("N:").append(evt.getNotifiedEntity()).append(NEW_LINE);
}
if (evt.getRemoteConnectionDescriptor() != null) {
s.append(NEW_LINE).append(evt.getRemoteConnectionDescriptor());
}
utilsFactory.deallocate(utils);
return s.toString();
}
public String encode(JainMgcpResponseEvent event) {
ModifyConnectionResponse response = (ModifyConnectionResponse) event;
ReturnCode returnCode = response.getReturnCode();
StringBuffer s = new StringBuffer();
s.append(returnCode.getValue()).append(SINGLE_CHAR_SPACE).append(response.getTransactionHandle()).append(
SINGLE_CHAR_SPACE).append(returnCode.getComment()).append(NEW_LINE);
if (response.getLocalConnectionDescriptor() != null) {
s.append(NEW_LINE).append(response.getLocalConnectionDescriptor());
}
return s.toString();
}
private class CommandContentHandle implements MgcpContentHandler {
private Utils utils = null;
public CommandContentHandle(Utils utils) {
this.utils = utils;
}
/**
* Receive notification of the header of a message. Parser will call
* this method to report about header reading.
*
* @param header
* the header from the message.
*/
public void header(String header) throws ParseException {
command = new ModifyConnection(source != null ? source : stack, new CallIdentifier("00"), endpoint,
new ConnectionIdentifier("00"));
command.setTransactionHandle(remoteTID);
}
/**
* Receive notification of the parameter of a message. Parser will call
* this method to report about parameter reading.
*
* @param name
* the name of the paremeter
* @param value
* the value of the parameter.
*/
public void param(String name, String value) throws ParseException {
if (name.equalsIgnoreCase("B")) {
command.setBearerInformation(utils.decodeBearerInformation(value));
} else if (name.equalsIgnoreCase("c")) {
command.setCallIdentifier(new CallIdentifier(value));
} else if (name.equalsIgnoreCase("I")) {
command.setConnectionIdentifier(new ConnectionIdentifier(value));
} else if (name.equalsIgnoreCase("m")) {
command.setMode(utils.decodeConnectionMode(value));
} else if (name.equalsIgnoreCase("L")) {
command.setLocalConnectionOptions(utils.decodeLocalOptionValueList(value));
} else if (name.equalsIgnoreCase("N")) {
command.setNotifiedEntity(utils.decodeNotifiedEntity(value, true));
} else if (name.equalsIgnoreCase("X")) {
command.setNotificationRequestParms(new NotificationRequestParms(new RequestIdentifier(value)));
} else if (name.equalsIgnoreCase("R")) {
command.getNotificationRequestParms().setRequestedEvents(utils.decodeRequestedEventList(value));
} else if (name.equalsIgnoreCase("S")) {
command.getNotificationRequestParms().setSignalRequests(utils.decodeEventNames(value));
} else if (name.equalsIgnoreCase("T")) {
command.getNotificationRequestParms().setDetectEvents(utils.decodeEventNames(value));
}
}
/**
* Receive notification of the session description. Parser will call
* this method to report about session descriptor reading.
*
* @param sd
* the session description from message.
*/
public void sessionDescription(String sd) throws ParseException {
command.setRemoteConnectionDescriptor(new ConnectionDescriptor(sd));
}
}
private class ResponseContentHandle implements MgcpContentHandler {
private Utils utils;
public ResponseContentHandle(Utils utils) {
this.utils = utils;
}
/**
* Receive notification of the header of a message. Parser will call
* this method to report about header reading.
*
* @param header
* the header from the message.
*/
public void header(String header) throws ParseException {
String[] tokens = utils.splitStringBySpace(header);
int tid = Integer.parseInt(tokens[1]);
response = new ModifyConnectionResponse(source != null ? source : stack, utils.decodeReturnCode(Integer
.parseInt(tokens[0])));
response.setTransactionHandle(tid);
}
/**
* Receive notification of the parameter of a message. Parser will call
* this method to report about parameter reading.
*
* @param name
* the name of the paremeter
* @param value
* the value of the parameter.
*/
public void param(String name, String value) throws ParseException {
// hasn't parameters
}
/**
* Receive notification of the session description. Parser will call
* this method to report about session descriptor reading.
*
* @param sd
* the session description from message.
*/
public void sessionDescription(String sd) throws ParseException {
response.setLocalConnectionDescriptor(new ConnectionDescriptor(sd));
}
}
@Override
public JainMgcpResponseEvent getProvisionalResponse() {
ModifyConnectionResponse provisionalresponse = null;
if (!sent) {
provisionalresponse = new ModifyConnectionResponse(source != null ? source : stack,
ReturnCode.Transaction_Being_Executed);
}
return provisionalresponse;
}
}