private FromHeader getFromHeader() throws IOException {
if (fromHeader != null) {
return fromHeader;
}
try {
SipURI fromURI =
(SipURI)
addressFactory.createURI("sip:" + proxyCredentials.getUserName() + "@" + registrar);
fromURI.setTransportParam(sipProvider.getListeningPoint().getTransport());
fromURI.setPort(sipProvider.getListeningPoint().getPort());
Address fromAddress = addressFactory.createAddress(fromURI);
fromAddress.setDisplayName(proxyCredentials.getUserDisplay());
fromHeader = headerFactory.createFromHeader(fromAddress, Integer.toString(hashCode()));
} catch (ParseException e) {
throw new IOException(
"A ParseException occurred while creating From Header! " + e.getMessage());
}
return fromHeader;
}
private ContactHeader getRegistrationContactHeader() throws IOException {
if (contactHeader != null) {
return contactHeader;
}
try {
SipURI contactURI =
(SipURI)
addressFactory.createURI(
"sip:" + proxyCredentials.getUserName() + "@" + proxyCredentials.getHost());
contactURI.setTransportParam(sipProvider.getListeningPoint().getTransport());
contactURI.setPort(sipProvider.getListeningPoint().getPort());
Address contactAddress = addressFactory.createAddress(contactURI);
contactAddress.setDisplayName(proxyCredentials.getUserDisplay());
contactHeader = headerFactory.createContactHeader(contactAddress);
return contactHeader;
} catch (ParseException e) {
throw new IOException(
"A ParseException occurred while creating From Header! " + " " + e.getMessage());
}
}
public void processResponse(ResponseEvent responseEvent) {
ClientTransaction ct = responseEvent.getClientTransaction();
Response response = responseEvent.getResponse();
ServerTransaction st = (ServerTransaction) ct.getApplicationData();
try {
Response otherResponse =
messageFactory.createResponse(response.getStatusCode(), st.getRequest());
if (response.getStatusCode() == 200 && ct.getRequest().getMethod().equals("INVITE")) {
Address address =
addressFactory.createAddress("B2BUA <sip:" + myAddress + ":" + myPort + ">");
ContactHeader contactHeader = headerFactory.createContactHeader(address);
response.addHeader(contactHeader);
ToHeader toHeader = (ToHeader) otherResponse.getHeader(ToHeader.NAME);
if (toHeader.getTag() == null)
toHeader.setTag(new Long(counter.getAndIncrement()).toString());
otherResponse.addHeader(contactHeader);
}
st.sendResponse(otherResponse);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
private void register() throws IOException {
Log.info("Registering with " + registrar);
FromHeader fromHeader = getFromHeader();
Address fromAddress = fromHeader.getAddress();
// Request URI
SipURI requestURI = null;
try {
requestURI = addressFactory.createSipURI(null, registrar);
} catch (ParseException e) {
throw new IOException("Bad registrar address:" + registrar + " " + e.getMessage());
}
// requestURI.setPort(registrarPort);
try {
requestURI.setTransportParam(sipProvider.getListeningPoint().getTransport());
} catch (ParseException e) {
throw new IOException(
sipProvider.getListeningPoint().getTransport()
+ " is not a valid transport! "
+ e.getMessage());
}
CallIdHeader callIdHeader = sipProvider.getNewCallId();
CSeqHeader cSeqHeader = null;
try {
cSeqHeader = headerFactory.createCSeqHeader(1, Request.REGISTER);
} catch (ParseException e) {
// Should never happen
throw new IOException("Corrupt Sip Stack " + e.getMessage());
} catch (InvalidArgumentException e) {
// Should never happen
throw new IOException("The application is corrupt ");
}
ToHeader toHeader = null;
try {
String proxyWorkAround = System.getProperty("com.sun.mc.softphone.REGISTRAR_WORKAROUND");
if (proxyWorkAround != null && proxyWorkAround.toUpperCase().equals("TRUE")) {
SipURI toURI = (SipURI) (requestURI.clone());
toURI.setUser(System.getProperty("user.name"));
toHeader = headerFactory.createToHeader(addressFactory.createAddress(toURI), null);
} else {
toHeader = headerFactory.createToHeader(fromAddress, null);
}
} catch (ParseException e) {
throw new IOException(
"Could not create a To header for address:"
+ fromHeader.getAddress()
+ " "
+ e.getMessage());
}
ArrayList viaHeaders = getLocalViaHeaders();
MaxForwardsHeader maxForwardsHeader = getMaxForwardsHeader();
Request request = null;
try {
request =
messageFactory.createRequest(
requestURI,
Request.REGISTER,
callIdHeader,
cSeqHeader,
fromHeader,
toHeader,
viaHeaders,
maxForwardsHeader);
} catch (ParseException e) {
throw new IOException("Could not create the register request! " + e.getMessage());
}
ExpiresHeader expHeader = null;
for (int retry = 0; retry < 2; retry++) {
try {
expHeader = headerFactory.createExpiresHeader(expires);
} catch (InvalidArgumentException e) {
if (retry == 0) {
continue;
}
throw new IOException(
"Invalid registrations expiration parameter - " + expires + " " + e.getMessage());
}
}
request.addHeader(expHeader);
ContactHeader contactHeader = getRegistrationContactHeader();
request.addHeader(contactHeader);
try {
SipURI routeURI =
(SipURI) addressFactory.createURI("sip:" + proxyCredentials.getProxy() + ";lr");
RouteHeader routeHeader =
headerFactory.createRouteHeader(addressFactory.createAddress(routeURI));
request.addHeader(routeHeader);
} catch (Exception e) {
Log.error("Creating registration route error ", e);
}
ClientTransaction regTrans = null;
try {
regTrans = sipProvider.getNewClientTransaction(request);
} catch (TransactionUnavailableException e) {
throw new IOException(
"Could not create a register transaction!\n"
+ "Check that the Registrar address is correct! "
+ e.getMessage());
}
try {
sipCallId = callIdHeader.getCallId();
sipServerCallback.addSipListener(sipCallId, this);
registerRequest = request;
regTrans.sendRequest();
Log.debug("Sent register request " + registerRequest);
if (expires > 0) {
scheduleReRegistration();
}
} catch (Exception e) {
throw new IOException("Could not send out the register request! " + e.getMessage());
}
this.registerRequest = request;
}
public void init() {
SipFactory sipFactory = null;
sipStack = null;
sipFactory = SipFactory.getInstance();
sipFactory.setPathName("gov.nist");
Properties properties = new Properties();
// If you want to try TCP transport change the following to
String transport = "udp";
String peerHostPort = "127.0.0.1:5070";
properties.setProperty("javax.sip.IP_ADDRESS", "127.0.0.1");
properties.setProperty("javax.sip.OUTBOUND_PROXY", peerHostPort + "/" + transport);
properties.setProperty("javax.sip.STACK_NAME", "shootist");
properties.setProperty("javax.sip.RETRANSMISSION_FILTER", "on");
// The following properties are specific to nist-sip
// and are not necessarily part of any other jain-sip
// implementation.
// You can set a max message size for tcp transport to
// guard against denial of service attack.
properties.setProperty("gov.nist.javax.sip.MAX_MESSAGE_SIZE", "1048576");
properties.setProperty("gov.nist.javax.sip.DEBUG_LOG", "shootistdebug.txt");
properties.setProperty("gov.nist.javax.sip.SERVER_LOG", "shootistlog.txt");
// Drop the client connection after we are done with the transaction.
properties.setProperty("gov.nist.javax.sip.CACHE_CLIENT_CONNECTIONS", "false");
// Set to 0 in your production code for max speed.
// You need 16 for logging traces. 32 for debug + traces.
// Your code will limp at 32 but it is best for debugging.
properties.setProperty("gov.nist.javax.sip.TRACE_LEVEL", "0");
try {
// Create SipStack object
sipStack = sipFactory.createSipStack(properties);
System.out.println("createSipStack " + sipStack);
} catch (PeerUnavailableException e) {
// could not find
// gov.nist.jain.protocol.ip.sip.SipStackImpl
// in the classpath
e.printStackTrace();
System.err.println(e.getMessage());
System.exit(0);
}
try {
headerFactory = sipFactory.createHeaderFactory();
addressFactory = sipFactory.createAddressFactory();
messageFactory = sipFactory.createMessageFactory();
udpListeningPoint = sipStack.createListeningPoint(sipStack.getIPAddress(), 5060, "udp");
udpProvider = sipStack.createSipProvider(udpListeningPoint);
Shootist listener = this;
udpProvider.addSipListener(listener);
tcpListeningPoint = sipStack.createListeningPoint(sipStack.getIPAddress(), 5060, "tcp");
tcpProvider = sipStack.createSipProvider(tcpListeningPoint);
tcpProvider.addSipListener(listener);
SipProvider sipProvider = transport.equalsIgnoreCase("udp") ? udpProvider : tcpProvider;
String fromName = "BigGuy";
String fromSipAddress = "here.com";
String fromDisplayName = "The Master Blaster";
String toSipAddress = "there.com";
String toUser = "******";
String toDisplayName = "The Little Blister";
// send the request out.
for (int i = 0; i < 100; i++) {
// create >From Header
SipURI fromAddress = addressFactory.createSipURI(fromName, fromSipAddress);
Address fromNameAddress = addressFactory.createAddress(fromAddress);
fromNameAddress.setDisplayName(fromDisplayName);
FromHeader fromHeader = headerFactory.createFromHeader(fromNameAddress, "12345" + i);
// create To Header
SipURI toAddress = addressFactory.createSipURI(toUser, toSipAddress);
Address toNameAddress = addressFactory.createAddress(toAddress);
toNameAddress.setDisplayName(toDisplayName);
ToHeader toHeader = headerFactory.createToHeader(toNameAddress, null);
// create Request URI
SipURI requestURI = addressFactory.createSipURI(toUser, peerHostPort);
// Create ViaHeaders
ArrayList viaHeaders = new ArrayList();
int port = sipProvider.getListeningPoint(transport).getPort();
ViaHeader viaHeader =
headerFactory.createViaHeader(sipStack.getIPAddress(), port, transport, null);
// add via headers
viaHeaders.add(viaHeader);
// Create ContentTypeHeader
ContentTypeHeader contentTypeHeader =
headerFactory.createContentTypeHeader("application", "sdp");
// Create a new CallId header
CallIdHeader callIdHeader = sipProvider.getNewCallId();
// Create a new Cseq header
CSeqHeader cSeqHeader = headerFactory.createCSeqHeader(1L, Request.INVITE);
// Create a new MaxForwardsHeader
MaxForwardsHeader maxForwards = headerFactory.createMaxForwardsHeader(70);
// Create the request.
Request request =
messageFactory.createRequest(
requestURI,
Request.INVITE,
callIdHeader,
cSeqHeader,
fromHeader,
toHeader,
viaHeaders,
maxForwards);
// Create contact headers
String host = sipStack.getIPAddress();
SipURI contactUrl = addressFactory.createSipURI(fromName, host);
contactUrl.setPort(tcpListeningPoint.getPort());
// Create the contact name address.
SipURI contactURI = addressFactory.createSipURI(fromName, host);
contactURI.setPort(sipProvider.getListeningPoint(transport).getPort());
Address contactAddress = addressFactory.createAddress(contactURI);
// Add the contact address.
contactAddress.setDisplayName(fromName);
contactHeader = headerFactory.createContactHeader(contactAddress);
request.addHeader(contactHeader);
// Add the extension header.
Header extensionHeader = headerFactory.createHeader("My-Header", "my header value");
request.addHeader(extensionHeader);
String sdpData =
"v=0\r\n"
+ "o=4855 13760799956958020 13760799956958020"
+ " IN IP4 129.6.55.78\r\n"
+ "s=mysession session\r\n"
+ "p=+46 8 52018010\r\n"
+ "c=IN IP4 129.6.55.78\r\n"
+ "t=0 0\r\n"
+ "m=audio 6022 RTP/AVP 0 4 18\r\n"
+ "a=rtpmap:0 PCMU/8000\r\n"
+ "a=rtpmap:4 G723/8000\r\n"
+ "a=rtpmap:18 G729A/8000\r\n"
+ "a=ptime:20\r\n";
byte[] contents = sdpData.getBytes();
request.setContent(contents, contentTypeHeader);
extensionHeader = headerFactory.createHeader("My-Other-Header", "my new header value ");
request.addHeader(extensionHeader);
Header callInfoHeader =
headerFactory.createHeader("Call-Info", "<http://www.antd.nist.gov>");
request.addHeader(callInfoHeader);
// Create the client transaction.
ClientTransaction inviteTid = sipProvider.getNewClientTransaction(request);
inviteTid.sendRequest();
}
} catch (Exception ex) {
System.out.println(ex.getMessage());
ex.printStackTrace();
usage();
}
}
public void sendSubscribe(String localURL, String buddyURI, boolean EXPIRED) {
try {
logger.debug("Sending SUBSCRIBE in progress to the buddy: " + buddyURI);
int proxyPort = imUA.getProxyPort();
String proxyAddress = imUA.getProxyAddress();
String imProtocol = imUA.getIMProtocol();
SipStack sipStack = imUA.getSipStack();
SipProvider sipProvider = imUA.getSipProvider();
MessageFactory messageFactory = imUA.getMessageFactory();
HeaderFactory headerFactory = imUA.getHeaderFactory();
AddressFactory addressFactory = imUA.getAddressFactory();
// Request-URI:
// URI requestURI=addressFactory.createURI(buddyURI);
SipURI requestURI = addressFactory.createSipURI(null, proxyAddress);
requestURI.setPort(proxyPort);
requestURI.setTransportParam(imProtocol);
// Call-Id:
CallIdHeader callIdHeader = null;
// CSeq:
CSeqHeader cseqHeader = null;
// To header:
ToHeader toHeader = null;
// From Header:
FromHeader fromHeader = null;
// Via header
String branchId = Utils.generateBranchId();
ViaHeader viaHeader =
headerFactory.createViaHeader(
imUA.getIMAddress(), imUA.getIMPort(), imProtocol, branchId);
Vector viaList = new Vector();
viaList.addElement(viaHeader);
PresenceManager presenceManager = imUA.getPresenceManager();
Presentity presentity = presenceManager.getPresentity(buddyURI);
Dialog dialog = null;
if (presentity != null) dialog = presentity.getDialog();
if (dialog != null) {
// We have to remove the subscriber and the Presentity related
// with this Buddy...
presenceManager.removePresentity(buddyURI);
Subscriber subscriber = presenceManager.getSubscriber(buddyURI);
if (subscriber == null) {
// It means that the guy does not have us in his buddy list
// nothing to do!!!
} else {
presenceManager.removeSubscriber(buddyURI);
}
Address localAddress = dialog.getLocalParty();
Address remoteAddress = dialog.getRemoteParty();
fromHeader = headerFactory.createFromHeader(localAddress, dialog.getLocalTag());
toHeader = headerFactory.createToHeader(remoteAddress, dialog.getRemoteTag());
long cseq = dialog.getLocalSeqNumber();
cseqHeader = headerFactory.createCSeqHeader(cseq, "MESSAGE");
callIdHeader = dialog.getCallId();
} else {
String localTag = Utils.generateTag();
Address toAddress = addressFactory.createAddress(buddyURI);
Address fromAddress = addressFactory.createAddress(localURL);
fromHeader = headerFactory.createFromHeader(fromAddress, localTag);
toHeader = headerFactory.createToHeader(toAddress, null);
// CSeq:
cseqHeader = headerFactory.createCSeqHeader(1L, "SUBSCRIBE");
callIdCounter++;
// Call-ID:
callIdHeader =
(CallIdHeader)
headerFactory.createCallIdHeader("nist-sip-im-subscribe-callId" + callIdCounter);
}
// MaxForwards header:
MaxForwardsHeader maxForwardsHeader = headerFactory.createMaxForwardsHeader(70);
Request request =
messageFactory.createRequest(
requestURI,
"SUBSCRIBE",
callIdHeader,
cseqHeader,
fromHeader,
toHeader,
viaList,
maxForwardsHeader);
RouteHeader rh = this.imUA.getRouteToProxy();
request.setHeader(rh);
// Contact header:
SipURI sipURI = addressFactory.createSipURI(null, imUA.getIMAddress());
sipURI.setPort(imUA.getIMPort());
sipURI.setTransportParam(imUA.getIMProtocol());
Address contactAddress = addressFactory.createAddress(sipURI);
ContactHeader contactHeader = headerFactory.createContactHeader(contactAddress);
request.setHeader(contactHeader);
ExpiresHeader expiresHeader = null;
if (EXPIRED) {
expiresHeader = headerFactory.createExpiresHeader(0);
} else {
expiresHeader = headerFactory.createExpiresHeader(presenceManager.getExpiresTime());
}
request.setHeader(expiresHeader);
// WE have to add a new Header: "Event"
Header eventHeader = headerFactory.createHeader("Event", "presence");
request.setHeader(eventHeader);
// Add Acceptw Header
Header acceptHeader = headerFactory.createHeader("Accept", "application/pidf+xml");
request.setHeader(acceptHeader);
// ProxyAuthorization header if not null:
ProxyAuthorizationHeader proxyAuthHeader = imUA.getProxyAuthorizationHeader();
if (proxyAuthHeader != null) request.setHeader(proxyAuthHeader);
ClientTransaction clientTransaction = sipProvider.getNewClientTransaction(request);
if (dialog != null) {
dialog.sendRequest(clientTransaction);
} else {
clientTransaction.sendRequest();
}
logger.debug("IMSubscribeProcessing, sendSubscribe(), SUBSCRIBE sent:\n" + request);
} catch (Exception ex) {
ex.printStackTrace();
}
}
public void sendPublish(String localURI, String status) {
try {
logger.debug("Sending PUBLISH in progress");
int proxyPort = imUA.getProxyPort();
String proxyAddress = imUA.getProxyAddress();
String imProtocol = imUA.getIMProtocol();
SipStack sipStack = imUA.getSipStack();
SipProvider sipProvider = imUA.getSipProvider();
MessageFactory messageFactory = imUA.getMessageFactory();
HeaderFactory headerFactory = imUA.getHeaderFactory();
AddressFactory addressFactory = imUA.getAddressFactory();
// Request-URI:
if (localURI.startsWith("sip:")) localURI = localURI.substring(4, localURI.length());
SipURI requestURI = addressFactory.createSipURI(null, localURI);
requestURI.setPort(proxyPort);
requestURI.setTransportParam(imProtocol);
// Via header
String branchId = Utils.generateBranchId();
ViaHeader viaHeader =
headerFactory.createViaHeader(
imUA.getIMAddress(), imUA.getIMPort(), imProtocol, branchId);
Vector viaList = new Vector();
viaList.addElement(viaHeader);
// To header:
System.out.println("XXX localURI=" + localURI);
Address localAddress = addressFactory.createAddress("sip:" + localURI);
ToHeader toHeader = headerFactory.createToHeader(localAddress, null);
// From header:
String localTag = Utils.generateTag();
FromHeader fromHeader = headerFactory.createFromHeader(localAddress, localTag);
// Call-ID:
CallIdHeader callIdHeader = headerFactory.createCallIdHeader(callIdCounter + localURI);
// CSeq:
CSeqHeader cseqHeader = headerFactory.createCSeqHeader(1L, "PUBLISH");
// MaxForwards header:
MaxForwardsHeader maxForwardsHeader = headerFactory.createMaxForwardsHeader(70);
// Create Request
Request request =
messageFactory.createRequest(
requestURI,
"PUBLISH",
callIdHeader,
cseqHeader,
fromHeader,
toHeader,
viaList,
maxForwardsHeader);
// Expires header: (none, let server chose)
// Event header:
Header header = headerFactory.createHeader("Event", "presence");
request.setHeader(header);
RouteHeader routeHeader = this.imUA.getRouteToProxy();
request.setHeader(routeHeader);
// Content and Content-Type header:
String basic;
if (status.equals("offline")) basic = "closed";
else basic = "open";
String content =
"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
+ "<presence xmlns=\"urn:ietf:params:xml:ns:pidf\""
+ " entity=\""
+ localURI
+ "\">\n"
+ " <tuple id=\""
+ entity
+ "\">\n"
+ " <status>\n"
+ " <basic>"
+ basic
+ "</basic>\n"
+ " </status>\n"
+ " <note>"
+ status
+ "</note>\n"
+ " </tuple>\n"
+ "</presence>";
ContentTypeHeader contentTypeHeader =
headerFactory.createContentTypeHeader("application", "pidf+xml");
request.setContent(content, contentTypeHeader);
// Content-Length header:
ContentLengthHeader contentLengthHeader =
headerFactory.createContentLengthHeader(content.length());
request.setContentLength(contentLengthHeader);
// Send request
ClientTransaction clientTransaction = sipProvider.getNewClientTransaction(request);
clientTransaction.sendRequest();
} catch (Exception ex) {
ex.printStackTrace();
}
}
public ClientTransaction call(SipURI destination) {
try {
String fromName = "B2BUA";
String fromSipAddress = "here.com";
String fromDisplayName = "B2BUA";
String toSipAddress = "there.com";
String toUser = "******";
String toDisplayName = "Target";
// create >From Header
SipURI fromAddress = addressFactory.createSipURI(fromName, fromSipAddress);
Address fromNameAddress = addressFactory.createAddress(fromAddress);
fromNameAddress.setDisplayName(fromDisplayName);
FromHeader fromHeader =
headerFactory.createFromHeader(
fromNameAddress, new Long(counter.getAndIncrement()).toString());
// create To Header
SipURI toAddress = addressFactory.createSipURI(toUser, toSipAddress);
Address toNameAddress = addressFactory.createAddress(toAddress);
toNameAddress.setDisplayName(toDisplayName);
ToHeader toHeader = headerFactory.createToHeader(toNameAddress, null);
// create Request URI
SipURI requestURI = destination;
// Create ViaHeaders
ArrayList viaHeaders = new ArrayList();
String ipAddress = listeningPoint.getIPAddress();
ViaHeader viaHeader =
headerFactory.createViaHeader(
ipAddress, sipProvider.getListeningPoint(transport).getPort(), transport, null);
// add via headers
viaHeaders.add(viaHeader);
// Create ContentTypeHeader
ContentTypeHeader contentTypeHeader =
headerFactory.createContentTypeHeader("application", "sdp");
// Create a new CallId header
CallIdHeader callIdHeader = sipProvider.getNewCallId();
// Create a new Cseq header
CSeqHeader cSeqHeader = headerFactory.createCSeqHeader(1L, Request.INVITE);
// Create a new MaxForwardsHeader
MaxForwardsHeader maxForwards = headerFactory.createMaxForwardsHeader(70);
// Create the request.
Request request =
messageFactory.createRequest(
requestURI,
Request.INVITE,
callIdHeader,
cSeqHeader,
fromHeader,
toHeader,
viaHeaders,
maxForwards);
// Create contact headers
String host = "127.0.0.1";
SipURI contactUrl = addressFactory.createSipURI(fromName, host);
contactUrl.setPort(listeningPoint.getPort());
contactUrl.setLrParam();
// Create the contact name address.
SipURI contactURI = addressFactory.createSipURI(fromName, host);
contactURI.setPort(sipProvider.getListeningPoint(transport).getPort());
Address contactAddress = addressFactory.createAddress(contactURI);
// Add the contact address.
contactAddress.setDisplayName(fromName);
ContactHeader contactHeader = headerFactory.createContactHeader(contactAddress);
request.addHeader(contactHeader);
// You can add extension headers of your own making
// to the outgoing SIP request.
// Add the extension header.
Header extensionHeader = headerFactory.createHeader("My-Header", "my header value");
request.addHeader(extensionHeader);
String sdpData =
"v=0\r\n"
+ "o=4855 13760799956958020 13760799956958020"
+ " IN IP4 129.6.55.78\r\n"
+ "s=mysession session\r\n"
+ "p=+46 8 52018010\r\n"
+ "c=IN IP4 129.6.55.78\r\n"
+ "t=0 0\r\n"
+ "m=audio 6022 RTP/AVP 0 4 18\r\n"
+ "a=rtpmap:0 PCMU/8000\r\n"
+ "a=rtpmap:4 G723/8000\r\n"
+ "a=rtpmap:18 G729A/8000\r\n"
+ "a=ptime:20\r\n";
byte[] contents = sdpData.getBytes();
request.setContent(contents, contentTypeHeader);
// You can add as many extension headers as you
// want.
extensionHeader = headerFactory.createHeader("My-Other-Header", "my new header value ");
request.addHeader(extensionHeader);
Header callInfoHeader = headerFactory.createHeader("Call-Info", "<http://www.antd.nist.gov>");
request.addHeader(callInfoHeader);
// Create the client transaction.
ClientTransaction inviteTid = sipProvider.getNewClientTransaction(request);
System.out.println("inviteTid = " + inviteTid);
// send the request out.
inviteTid.sendRequest();
return inviteTid;
} catch (Exception ex) {
System.out.println(ex.getMessage());
ex.printStackTrace();
}
return null;
}