package examples.redirect;
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 ProtocolObjects protocolObjects;
private static final String myAddress = "127.0.0.1";
public static final int myPort = 5070;
protected ServerTransaction inviteTid;
private Response okResponse;
private Request inviteRequest;
private Dialog dialog;
private SipProvider sipProvider;
private int inviteCount = 0;
private int dialogTerminationCount = 0;
private int dialogCount;
private static Logger logger = Logger.getLogger(Shootme.class);
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 {
fail("unexpected request recieved");
}
}
public void processResponse(ResponseEvent responseEvent) {
Response r = responseEvent.getResponse();
logger.info("\n\nResponse " + r.getStatusCode() + " received at "
+ protocolObjects.sipStack.getStackName() );
ClientTransaction ct = responseEvent.getClientTransaction();
assertNotNull( ct );
assertNotNull( ct.getDialog() );
assertEquals( DialogState.TERMINATED, ct.getDialog().getState() );
}
/**
* Process the ACK request. Send the bye and complete the call flow.
*/
public void processAck(RequestEvent requestEvent,
ServerTransaction serverTransaction) {
try {
logger.info("shootme: got an ACK! " + requestEvent.getRequest());
logger.info("Dialog State = " + dialog.getState() + " sending BYE ");
assertTrue(dialog.getState() == DialogState.CONFIRMED);
Request bye = dialog.createRequest(Request.BYE);
logger.info("bye request = " + bye);
ClientTransaction ct = this.sipProvider
.getNewClientTransaction(bye);
dialog.sendRequest(ct);
// JvB: not yet, set upon receiving BYE OK response
// assertEquals( DialogState.TERMINATED, dialog.getState() );
} catch (Exception ex) {
logger.error("unexpected exception", ex);
fail("unexpected exception sending bye");
}
}
/**
* Process the invite request.
*/
public void processInvite(RequestEvent requestEvent,
ServerTransaction serverTransaction) {
SipProvider sipProvider = (SipProvider) requestEvent.getSource();
Request request = requestEvent.getRequest();
try {
this.inviteCount++;
logger.info("shootme: got an Invite " + request);
assertTrue(request.getHeader(ContactHeader.NAME) != null );
Response response = protocolObjects.messageFactory.createResponse(
Response.TRYING, request);
ToHeader toHeader = (ToHeader) response.getHeader(ToHeader.NAME);
Address address = protocolObjects.addressFactory
.createAddress("Shootme <sip:" + myAddress + ":" + myPort
+";transport="+protocolObjects.transport
+ ">");
ServerTransaction st = requestEvent.getServerTransaction();
if (st == null) {
st = sipProvider.getNewServerTransaction(request);
}
Dialog dialog = st.getDialog();
assertTrue(this.dialog != dialog);
this.dialogCount ++;
this.dialog = dialog;
logger.info("Shootme: dialog = " + dialog);
st.sendResponse(response);
ContactHeader contactHeader = protocolObjects.headerFactory.createContactHeader(address);
/**
* We distinguish here after the display header in the Request URI
* to create a final response
*/
if (((SipURI)(request.getRequestURI())).getParameter("redirection") == null) {
Response moved = protocolObjects.messageFactory.createResponse(
Response.MOVED_TEMPORARILY, request);
moved.addHeader(contactHeader);
toHeader = (ToHeader) moved.getHeader(ToHeader.NAME);
toHeader.setTag("4321"); // Application is supposed to set.
st.sendResponse(moved);
// Check that the stack is assigning the right state to the
// dialog.
assertTrue("dialog state should be terminated",dialog.getState() == DialogState.TERMINATED);
} else {
Response ringing = protocolObjects.messageFactory
.createResponse(Response.RINGING, request);
toHeader = (ToHeader) ringing.getHeader(ToHeader.NAME);
toHeader.setTag("5432"); // Application is supposed to set.
st.sendResponse(ringing);
assertTrue("server tx state should be proceeding",st.getState() == TransactionState.PROCEEDING);
this.okResponse = protocolObjects.messageFactory
.createResponse(Response.OK, request);
toHeader = (ToHeader) okResponse.getHeader(ToHeader.NAME);
toHeader.setTag("5432"); // 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), 1000);
}
} catch (Exception ex) {
ex.printStackTrace();
fail("Error sending response to INVITE");
}
}
private void sendInviteOK() {
try {
assertTrue(inviteTid.getState() == TransactionState.PROCEEDING);
inviteTid.sendResponse(okResponse);
logger.info("Dialog = " + inviteTid.getDialog());
logger.info("shootme: Dialog state after response: "
+ okResponse.getStatusCode() + " "
+ inviteTid.getDialog().getState());
assertTrue(inviteTid.getState() == TransactionState.TERMINATED);
} catch (SipException ex) {
logger.error("unexpected exception", ex);
fail("unexpected exception");
} catch (InvalidArgumentException ex) {
logger.error("unexpceted exception", ex);
fail("unexpected exception");
}
}
/**
* Process the bye request.
*/
public void processBye(RequestEvent requestEvent,
ServerTransaction serverTransactionId) {
SipProvider sipProvider = (SipProvider) requestEvent.getSource();
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) {
ex.printStackTrace();
System.exit(0);
}
}
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");
fail("unexpected timeout occured");
}
public SipProvider createProvider() throws Exception {
ListeningPoint lp = protocolObjects.sipStack.createListeningPoint("127.0.0.1", myPort,
protocolObjects.transport);
this.sipProvider = protocolObjects.sipStack.createSipProvider(lp);
return this.sipProvider;
}
public Shootme(ProtocolObjects protocolObjects) {
this.protocolObjects = protocolObjects;
}
public static void main(String args[]) throws Exception {
Shootme shootme = new Shootme(new ProtocolObjects("shootme", true,"udp",""));
logger.addAppender(new ConsoleAppender(new SimpleLayout()));
shootme.createProvider();
shootme.sipProvider.addSipListener(shootme);
}
public void processIOException(IOExceptionEvent exceptionEvent) {
logger.info("IOException");
fail("unexpected exception");
}
public void processTransactionTerminated(
TransactionTerminatedEvent transactionTerminatedEvent) {
logger.info("Transaction terminated event recieved");
}
public void processDialogTerminated(
DialogTerminatedEvent dialogTerminatedEvent) {
logger.info("Dialog terminated event recieved dialog = " + dialogTerminatedEvent.getDialog());
this.dialogTerminationCount++;
}
public void checkState() {
assertTrue(this.dialogTerminationCount == this.dialogCount);
}
}