package examples.publish;
import javax.sip.*;
import javax.sip.address.*;
import javax.sip.header.*;
import javax.sip.message.*;
import java.util.*;
/**
* The notifier
*
* @author M. Ranganathan
*/
public class Notifier implements SipListener {
private static AddressFactory addressFactory;
private static MessageFactory messageFactory;
private static HeaderFactory headerFactory;
private static SipStack sipStack;
protected SipProvider tcpProvider;
protected SipProvider udpProvider;
protected Dialog dialog;
protected static final String usageString = "java "
+ "examples.shootist.Shootist \n"
+ ">>>> is your class path set to the root?";
private static void usage() {
System.out.println(usageString);
System.exit(0);
}
public void processRequest(RequestEvent requestEvent) {
Request request = requestEvent.getRequest();
ServerTransaction serverTransactionId = requestEvent
.getServerTransaction();
System.out.println("\n\nRequest " + request.getMethod()
+ " received at " + sipStack.getStackName()
+ " with server transaction id " + serverTransactionId);
if (request.getMethod().equals(Request.SUBSCRIBE)) {
processSubscribe(requestEvent, serverTransactionId);
} else if (request.getMethod().equals(Request.PUBLISH)) {
processPublish(requestEvent, serverTransactionId);
}
}
private void processPublish(RequestEvent requestEvent,
ServerTransaction serverTransactionId) {
try {
EventHeader eventHeader = (EventHeader) requestEvent.getRequest()
.getHeader(EventHeader.NAME);
Request request = this.dialog.createRequest(Request.NOTIFY);
SubscriptionStateHeader subscriptionState = headerFactory
.createSubscriptionStateHeader(SubscriptionStateHeader.ACTIVE);
request.addHeader(subscriptionState);
request.addHeader(eventHeader);
ClientTransaction ct = udpProvider.getNewClientTransaction(request);
this.dialog.sendRequest(ct);
} catch (Exception ex) {
ex.printStackTrace();
System.exit(0);
}
}
/**
* Process the invite request.
*/
public void processSubscribe(RequestEvent requestEvent,
ServerTransaction serverTransaction) {
SipProvider sipProvider = (SipProvider) requestEvent.getSource();
Request request = requestEvent.getRequest();
try {
System.out.println("notifier: got an Subscribe sending OK");
System.out.println("notifier: " + request);
EventHeader eventHeader = (EventHeader) request
.getHeader(EventHeader.NAME);
if (eventHeader == null) {
System.out
.println("Cannot find event header.... dropping request.");
return;
}
Response response = messageFactory.createResponse(202, request);
ToHeader toHeader = (ToHeader) response.getHeader(ToHeader.NAME);
toHeader.setTag("4321"); // Application is supposed to set.
Address address = addressFactory
.createAddress("Notifier <sip:127.0.0.1:5070>");
ContactHeader contactHeader = headerFactory
.createContactHeader(address);
response.addHeader(contactHeader);
ServerTransaction st = requestEvent.getServerTransaction();
if (st == null) {
st = sipProvider.getNewServerTransaction(request);
}
System.out.println("got a server transaction " + st);
this.dialog = st.getDialog();
// subscribe dialogs do not terminate on bye.
this.dialog.terminateOnBye(false);
if (dialog != null) {
System.out.println("Dialog " + dialog);
System.out.println("Dialog state " + dialog.getState());
}
st.sendResponse(response);
if (dialog != null) {
System.out.println("Dialog " + dialog);
System.out.println("Dialog state " + dialog.getState());
}
/*
* NOTIFY requests MUST contain a "Subscription-State" header with a
* value of "active", "pending", or "terminated". The "active" value
* indicates that the subscription has been accepted and has been
* authorized (in most cases; see section 5.2.). The "pending" value
* indicates that the subscription has been received, but that
* policy information is insufficient to accept or deny the
* subscription at this time. The "terminated" value indicates that
* the subscription is not active.
*/
Request notifyRequest = dialog.createRequest(Request.NOTIFY);
SubscriptionStateHeader sstate = headerFactory
.createSubscriptionStateHeader(SubscriptionStateHeader.ACTIVE);
notifyRequest.addHeader(sstate);
notifyRequest.addHeader(eventHeader);
ClientTransaction ct = udpProvider
.getNewClientTransaction(notifyRequest);
dialog.sendRequest(ct);
} catch (Exception ex) {
ex.printStackTrace();
System.exit(0);
}
}
public void processResponse(ResponseEvent responseReceivedEvent) {
System.out.println("Got a response");
Response response = (Response) responseReceivedEvent.getResponse();
Transaction tid = responseReceivedEvent.getClientTransaction();
System.out.println("Response received with client transaction id "
+ tid + ":\n" + response);
}
public void processTimeout(javax.sip.TimeoutEvent timeoutEvent) {
Transaction transaction;
if (timeoutEvent.isServerTransaction()) {
transaction = timeoutEvent.getServerTransaction();
} else {
transaction = timeoutEvent.getClientTransaction();
}
System.out.println("state = " + transaction.getState());
System.out.println("dialog = " + transaction.getDialog());
System.out.println("dialogState = "
+ transaction.getDialog().getState());
System.out.println("Transaction Time out");
}
public void init() {
SipFactory sipFactory = null;
sipStack = null;
sipFactory = SipFactory.getInstance();
sipFactory.setPathName("gov.nist");
Properties properties = new Properties();
properties.setProperty("javax.sip.STACK_NAME", "notifier");
// 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", "32");
properties.setProperty("gov.nist.javax.sip.DEBUG_LOG",
"notifierdebug.txt");
properties.setProperty("gov.nist.javax.sip.SERVER_LOG",
"notifierlog.txt");
properties.setProperty("gov.nist.javax.sip.MAX_MESSAGE_SIZE", "4096");
properties.setProperty("gov.nist.javax.sip.CACHE_SERVER_CONNECTIONS",
"false");
try {
// Create SipStack object
sipStack = sipFactory.createSipStack(properties);
System.out.println("sipStack = " + sipStack);
} catch (PeerUnavailableException e) {
// could not find
// gov.nist.jain.protocol.ip.sip.SipStackImpl
// in the classpath
e.printStackTrace();
System.err.println(e.getMessage());
if (e.getCause() != null)
e.getCause().printStackTrace();
System.exit(0);
}
try {
headerFactory = sipFactory.createHeaderFactory();
addressFactory = sipFactory.createAddressFactory();
messageFactory = sipFactory.createMessageFactory();
ListeningPoint lp = sipStack.createListeningPoint("127.0.0.1",
5070, "udp");
ListeningPoint lp1 = sipStack.createListeningPoint("127.0.0.1",
5070, "tcp");
Notifier listener = this;
this.udpProvider = sipStack.createSipProvider(lp);
System.out.println("udp provider " + udpProvider);
udpProvider.addSipListener(listener);
this.tcpProvider = sipStack.createSipProvider(lp1);
System.out.println("tcp provider " + tcpProvider);
tcpProvider.addSipListener(listener);
} catch (Exception ex) {
System.out.println(ex.getMessage());
ex.printStackTrace();
usage();
}
}
public static void main(String args[]) {
new Notifier().init();
}
public void processIOException(IOExceptionEvent exceptionEvent) {
// TODO Auto-generated method stub
}
public void processTransactionTerminated(
TransactionTerminatedEvent transactionTerminatedEvent) {
// TODO Auto-generated method stub
}
public void processDialogTerminated(
DialogTerminatedEvent dialogTerminatedEvent) {
// TODO Auto-generated method stub
}
}