package examples.refer;
import javax.sip.*;
import javax.sip.address.*;
import javax.sip.header.*;
import javax.sip.message.*;
import org.apache.log4j.ConsoleAppender;
import org.apache.log4j.FileAppender;
import org.apache.log4j.Level;
import org.apache.log4j.Logger;
import org.apache.log4j.SimpleLayout;
import java.util.*;
/**
* This example shows an out-of-dialog REFER scenario:
*
* referer sends REFER to referee, with Refer-To set to Shootme
* referee sends INVITE to Shootme, and NOTIFYs to referer about call progress
*
* @author Jeroen van Bemmel
*/
public class Referer implements SipListener {
private SipProvider sipProvider;
private static AddressFactory addressFactory;
private static MessageFactory messageFactory;
private static HeaderFactory headerFactory;
private static SipStack sipStack;
private ContactHeader contactHeader;
private static String transport;
private int count;
private static Logger logger = Logger.getLogger(Referer.class);
static {
try {
logger.setLevel(Level.INFO);
logger.addAppender(new ConsoleAppender(new SimpleLayout()));
logger.addAppender(new FileAppender(new SimpleLayout(),
"refereroutputlog.txt"));
} catch (Exception ex) {
throw new RuntimeException(ex);
}
}
private ClientTransaction subscribeTid;
private ListeningPoint listeningPoint;
protected static final String usageString = "java "
+ "examples.subsnotify.Subscriber \n"
+ ">>>> is your class path set to the root?";
private static void usage() {
logger.info(usageString);
System.exit(0);
}
public void processRequest(RequestEvent requestReceivedEvent) {
Request request = requestReceivedEvent.getRequest();
ServerTransaction serverTransactionId = requestReceivedEvent
.getServerTransaction();
String viaBranch = ((ViaHeader)(request.getHeaders(ViaHeader.NAME).next())).getParameter("branch");
logger.info("\n\nRequest " + request.getMethod() + " received at "
+ sipStack.getStackName() + " with server transaction id "
+ serverTransactionId +
" branch ID = " + viaBranch);
logger.info( request );
if (request.getMethod().equals(Request.NOTIFY))
processNotify(requestReceivedEvent, serverTransactionId);
}
public void processNotify(RequestEvent requestEvent,
ServerTransaction serverTransactionId) {
SipProvider provider = (SipProvider) requestEvent.getSource();
Request notify = requestEvent.getRequest();
try {
logger.info("referer: got a notify count " + this.count++ );
if (serverTransactionId == null) {
logger.info("referer: null TID.");
serverTransactionId = provider.getNewServerTransaction(notify);
}
Dialog dialog = serverTransactionId.getDialog();
logger.info("Dialog = " + dialog);
if (dialog != null) {
logger.info("Dialog State = " + dialog.getState());
}
Response response = messageFactory.createResponse(200, notify);
// SHOULD add a Contact
ContactHeader contact = (ContactHeader) contactHeader.clone();
((SipURI)contact.getAddress().getURI()).setParameter( "id", "sub" );
response.addHeader( contact );
logger.info("Transaction State = " + serverTransactionId.getState());
serverTransactionId.sendResponse(response);
if (dialog != null ) {
logger.info("Dialog State = " + dialog.getState());
}
SubscriptionStateHeader subscriptionState = (SubscriptionStateHeader) notify
.getHeader(SubscriptionStateHeader.NAME);
// Subscription is terminated?
String state = subscriptionState.getState();
if (state.equalsIgnoreCase(SubscriptionStateHeader.TERMINATED)) {
dialog.delete();
} else {
logger.info("Referer: state now " + state);
}
} catch (Exception ex) {
ex.printStackTrace();
logger.error("Unexpected exception",ex);
System.exit(0);
}
}
public void processResponse(ResponseEvent responseReceivedEvent) {
logger.info("Got a response");
Response response = (Response) responseReceivedEvent.getResponse();
Transaction tid = responseReceivedEvent.getClientTransaction();
logger.info("Response received with client transaction id " + tid
+ ":\n" + response.getStatusCode() );
if (tid == null) {
logger.info("Stray response -- dropping ");
return;
}
logger.info("transaction state is " + tid.getState());
logger.info("Dialog = " + tid.getDialog());
if ( tid.getDialog () != null )
logger.info("Dialog State is " + tid.getDialog().getState());
}
public void createProvider() throws Exception {
this.listeningPoint = sipStack.createListeningPoint("127.0.0.1", 5060,
transport);
sipProvider = sipStack.createSipProvider(listeningPoint);
}
public void sendSubscribe() {
try {
String fromName = "BigGuy";
String fromSipAddress = "here.com";
String fromDisplayName = "The Master Blaster";
String toSipAddress = "127.0.0.1";
String toUser = "referee";
String toDisplayName = "Referee";
// create >From Header
SipURI fromAddress = addressFactory.createSipURI(fromName,
fromSipAddress);
Address fromNameAddress = addressFactory.createAddress(fromAddress);
fromNameAddress.setDisplayName(fromDisplayName);
FromHeader fromHeader = headerFactory.createFromHeader(
fromNameAddress, "12345");
// 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,
toSipAddress);
requestURI.setPort( 5065 ); // referee
// Create ViaHeaders
ArrayList viaHeaders = new ArrayList();
int port = sipProvider.getListeningPoint(transport).getPort();
ViaHeader viaHeader = headerFactory.createViaHeader("127.0.0.1",
port, transport, null);
// add via headers
viaHeaders.add(viaHeader);
// Create a new CallId header
CallIdHeader callIdHeader = sipProvider.getNewCallId();
// Create a new Cseq header
CSeqHeader cSeqHeader = headerFactory.createCSeqHeader(1L,
Request.REFER);
// Create a new MaxForwardsHeader
MaxForwardsHeader maxForwards = headerFactory
.createMaxForwardsHeader(70);
// Create the request.
Request request = messageFactory.createRequest(requestURI,
Request.REFER, callIdHeader, cSeqHeader, fromHeader,
toHeader, viaHeaders, maxForwards);
// Create contact headers
String host = listeningPoint.getIPAddress();
SipURI contactUrl = addressFactory.createSipURI(fromName, host);
contactUrl.setPort(listeningPoint.getPort());
// Create the contact name address.
SipURI contactURI = addressFactory.createSipURI(fromName, host);
contactURI.setTransportParam(transport);
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);
// Create the client transaction.
subscribeTid = sipProvider.getNewClientTransaction(request);
// REFER has an implicit "refer" event
// Create an event header for the subscription.
// EventHeader eventHeader = headerFactory.createEventHeader("foo");
// eventHeader.setEventId("foo");
// request.addHeader(eventHeader);
ReferToHeader referTo = headerFactory.createReferToHeader(
addressFactory.createAddress( "<sip:127.0.0.1:" + 5070 + ">" )
);
request.addHeader( referTo );
logger.info("Refer Dialog = " + subscribeTid.getDialog());
// send the request out.
subscribeTid.sendRequest();
} catch (Throwable ex) {
logger.info(ex.getMessage());
ex.printStackTrace();
usage();
}
}
public static void main(String args[]) throws Exception {
transport = "udp";
SipFactory sipFactory = SipFactory.getInstance();
sipFactory.setPathName("gov.nist");
Properties properties = new Properties();
properties.setProperty("javax.sip.USE_ROUTER_FOR_ALL_URIS", "false");
properties.setProperty("javax.sip.STACK_NAME", "referer");
properties.setProperty("gov.nist.javax.sip.DEBUG_LOG",
"refererdebug.txt");
properties.setProperty("gov.nist.javax.sip.SERVER_LOG",
"refererlog.txt");
properties.setProperty("javax.sip.FORKABLE_EVENTS", "foo");
// 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", "32");
sipStack = sipFactory.createSipStack(properties);
logger.info("createSipStack " + sipStack);
headerFactory = sipFactory.createHeaderFactory();
addressFactory = sipFactory.createAddressFactory();
messageFactory = sipFactory.createMessageFactory();
Referer subscriber = new Referer();
subscriber.createProvider();
subscriber.sipProvider.addSipListener(subscriber);
subscriber.sendSubscribe();
}
public void processIOException(IOExceptionEvent exceptionEvent) {
logger.info("io exception event recieved");
}
public void processTransactionTerminated(
TransactionTerminatedEvent tte) {
logger.info("transaction terminated:" + tte );
}
public void processDialogTerminated(
DialogTerminatedEvent dialogTerminatedEvent) {
logger.info("dialog terminated event recieved");
}
public void processTimeout(javax.sip.TimeoutEvent timeoutEvent) {
logger.info("Transaction Time out");
}
}
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