package examples.cancel;
import javax.sip.*;
import javax.sip.address.*;
import javax.sip.header.*;
import javax.sip.message.*;
import org.apache.log4j.ConsoleAppender;
import org.apache.log4j.Logger;
import org.apache.log4j.SimpleLayout;
import java.util.*;
import junit.framework.TestCase;
/**
* This class is a UAC template. Shootist is the guy that shoots and shootme is
* the guy that gets shot.
*
* @author M. Ranganathan
*/
public class Shootme extends TestCase implements SipListener {
private static final String myAddress = "127.0.0.1";
private static final String transport = "udp";
private static final int myPort = 5070;
private ServerTransaction inviteTid;
private Response okResponse;
private Request inviteRequest;
private SipProvider sipProvider;
private Dialog dialog;
private static Logger logger = Logger.getLogger(Shootme.class);
private static final String unexpectedException = "Unexpected Exception ";
class MyTimerTask extends TimerTask {
Shootme shootme;
public MyTimerTask(Shootme shootme) {
this.shootme = shootme;
}
public void run() {
shootme.sendInviteOK();
}
}
protected static final String usageString = "java "
+ "examples.shootist.Shootist \n"
+ ">>>> is your class path set to the root?";
public void processRequest(RequestEvent requestEvent) {
Request request = requestEvent.getRequest();
ServerTransaction serverTransactionId = requestEvent
.getServerTransaction();
logger.info("\n\nRequest " + request.getMethod()
+ " received at " + ProtocolObjects.sipStack.getStackName()
+ " with server transaction id " + serverTransactionId);
if (request.getMethod().equals(Request.INVITE)) {
processInvite(requestEvent, serverTransactionId);
} else if (request.getMethod().equals(Request.ACK)) {
processAck(requestEvent, serverTransactionId);
} else if (request.getMethod().equals(Request.BYE)) {
processBye(requestEvent, serverTransactionId);
} else if (request.getMethod().equals(Request.CANCEL)) {
processCancel(requestEvent, serverTransactionId);
}
}
public void processResponse(ResponseEvent responseEvent) {
}
/**
* Process the ACK request. Send the bye and complete the call flow.
*/
public void processAck(RequestEvent requestEvent,
ServerTransaction serverTransaction) {
SipProvider sipProvider = (SipProvider) requestEvent.getSource();
try {
if (dialog.getState() == DialogState.CONFIRMED) {
Request byeRequest = dialog.createRequest(Request.BYE);
ClientTransaction tr = sipProvider
.getNewClientTransaction(byeRequest);
logger.info("shootme: got an ACK -- sending bye! ");
dialog.sendRequest(tr);
logger.info("Dialog State = " + dialog.getState());
}
} catch (Exception ex) {
logger.error(ex);
fail(unexpectedException);
}
}
/**
* Process the invite request.
*/
public void processInvite(RequestEvent requestEvent,
ServerTransaction serverTransaction) {
SipProvider sipProvider = (SipProvider) requestEvent.getSource();
Request request = requestEvent.getRequest();
try {
logger.info("shootme: got an Invite sending RINGING");
// logger.info("shootme: " + request);
Response response = ProtocolObjects.messageFactory.createResponse(180, request);
ToHeader toHeader = (ToHeader) response.getHeader(ToHeader.NAME);
toHeader.setTag("4321"); // Application is supposed to set.
Address address = ProtocolObjects.addressFactory.createAddress("Shootme <sip:"
+ myAddress + ":" + myPort + ">");
ContactHeader contactHeader = ProtocolObjects.headerFactory
.createContactHeader(address);
response.addHeader(contactHeader);
ServerTransaction st = requestEvent.getServerTransaction();
if (st == null) {
st = sipProvider.getNewServerTransaction(request);
logger.info("Created a new server transaction for "
+ request.getMethod() + " serverTransaction = " + st);
}
dialog = st.getDialog();
st.sendResponse(response);
this.okResponse = ProtocolObjects.messageFactory.createResponse(200, request);
toHeader = (ToHeader) okResponse.getHeader(ToHeader.NAME);
toHeader.setTag("4321"); // Application is supposed to set.
okResponse.addHeader(contactHeader);
this.inviteTid = st;
// Defer sending the OK to simulate the phone ringing.
this.inviteRequest = request;
new Timer().schedule(new MyTimerTask(this), 300);
} catch (Exception ex) {
logger.error(ex);
fail(unexpectedException);
}
}
private void sendInviteOK() {
try {
if (inviteTid.getState() != TransactionState.COMPLETED) {
logger.info("shootme: got an Invite sending OK");
inviteTid.sendResponse(okResponse);
}
} catch (Exception ex) {
logger.error(ex);
}
}
/**
* Process the bye request.
*/
public void processBye(RequestEvent requestEvent,
ServerTransaction serverTransactionId) {
Request request = requestEvent.getRequest();
try {
logger.info("shootme: got a bye sending OK.");
Response response = ProtocolObjects.messageFactory.createResponse(200, request);
serverTransactionId.sendResponse(response);
logger.info("Dialog State is "
+ serverTransactionId.getDialog().getState());
} catch (Exception ex) {
logger.error(ex);
fail(unexpectedException);
}
}
public void processCancel(RequestEvent requestEvent,
ServerTransaction serverTransactionId) {
Request request = requestEvent.getRequest();
try {
logger.info("shootme: got a cancel.");
if (serverTransactionId == null) {
logger.info("shootme: null tid.");
return;
}
TestCase.assertTrue(inviteTid != serverTransactionId);
Response response = ProtocolObjects.messageFactory.createResponse(200, request);
serverTransactionId.sendResponse(response);
if (dialog.getState() != DialogState.CONFIRMED) {
response = ProtocolObjects.messageFactory.createResponse(
Response.REQUEST_TERMINATED, inviteRequest);
inviteTid.sendResponse(response);
}
} catch (Exception ex) {
logger.error(ex);
fail(unexpectedException);
}
}
public void processTimeout(javax.sip.TimeoutEvent timeoutEvent) {
Transaction transaction;
if (timeoutEvent.isServerTransaction()) {
transaction = timeoutEvent.getServerTransaction();
} else {
transaction = timeoutEvent.getClientTransaction();
}
logger.info("state = " + transaction.getState());
logger.info("dialog = " + transaction.getDialog());
logger.info("dialogState = "
+ transaction.getDialog().getState());
logger.info("Transaction Time out");
}
public SipProvider createProvider() {
try {
ListeningPoint lp = ProtocolObjects.sipStack.createListeningPoint(myAddress,
myPort, transport);
sipProvider = ProtocolObjects.sipStack.createSipProvider(lp);
logger.info("udp provider " + sipProvider);
return sipProvider;
} catch (Exception ex) {
logger.error(ex);
fail(unexpectedException);
return null;
}
}
public static void main(String args[])throws Exception {
logger.addAppender(new ConsoleAppender(new SimpleLayout()));
ProtocolObjects.init("shootme");
Shootme shootme = new Shootme();
shootme.createProvider();
shootme.sipProvider.addSipListener(shootme);
}
public void processIOException(IOExceptionEvent exceptionEvent) {
// TODO Auto-generated method stub
}
public void processTransactionTerminated(
TransactionTerminatedEvent transactionTerminatedEvent) {
if (transactionTerminatedEvent.isServerTransaction()) {
ServerTransaction serverTx = transactionTerminatedEvent
.getServerTransaction();
String method = serverTx.getRequest().getMethod();
logger.info("Server Tx : " + method + " terminated ");
}
}
public void processDialogTerminated(
DialogTerminatedEvent dialogTerminatedEvent) {
// TODO Auto-generated method stub
}
}