/** Invoked for SIP INVITE requests. */
@Override
protected void doInvite(final SipServletRequest req) throws ServletException, IOException {
if (req.isInitial()) {
// Get a reference to the Proxy helper.
final Proxy proxy = req.getProxy();
// Set Proxy parameters to control various aspects of the proxying
// operation:
proxy.setRecordRoute(true);
proxy.setSupervised(true);
// Set the flag indicates the working mode. True for Follow-Me; false for
// Find-me.
proxy.setParallel(m_parallel);
// Proxies a SIP request to the specified set of destinations.
proxy.proxyTo(m_targets);
}
}
public void dispatch() throws DispatcherException {
final SipServletRequestImpl sipServletRequest = (SipServletRequestImpl) sipServletMessage;
final Request request = (Request) sipServletRequest.getMessage();
final ServerTransaction inviteTransaction =
((ServerTransactionExt) sipServletRequest.getTransaction())
.getCanceledInviteTransaction();
if (inviteTransaction == null) {
if (logger.isDebugEnabled()) {
logger.debug(
"couldn't find the original invite transaction for this cancel "
+ request
+ ", it may be a retransmission and the transaction has already been terminated");
}
return;
}
final TransactionApplicationData inviteAppData =
(TransactionApplicationData) inviteTransaction.getApplicationData();
if (inviteAppData == null) {
if (logger.isDebugEnabled()) {
logger.debug(
"couldn't find the original transaction app data for this cancel "
+ request
+ ", it may be a retransmission and the transaction has already been terminated or is being cleaned up");
}
return;
}
final SipServletRequestImpl inviteRequest =
(SipServletRequestImpl) inviteAppData.getSipServletMessage();
final MobicentsSipSession sipSession = inviteRequest.getSipSession();
sipServletRequest.setSipSession(sipSession);
sipSession.setRequestsPending(0);
if (logger.isDebugEnabled()) {
logger.debug(
"message associated with the inviteAppData " + "of the CANCEL " + inviteRequest);
}
if (logger.isDebugEnabled()) {
logger.debug(
"invite transaction associated with the inviteAppData "
+ "of the CANCEL "
+ inviteTransaction);
}
if (logger.isDebugEnabled()) {
logger.debug(
"app data of the invite transaction associated with the inviteAppData "
+ "of the CANCEL "
+ inviteAppData);
}
if (logger.isDebugEnabled()) {
logger.debug(
"routing state of the INVITE request for the CANCEL = "
+ inviteRequest.getRoutingState());
}
final MobicentsSipApplicationSession sipApplicationSession =
sipSession.getSipApplicationSession();
final SipContext sipContext = sipApplicationSession.getSipContext();
try {
sipContext.enterSipApp(sipApplicationSession, sipSession);
final Proxy proxy = sipSession.getProxy();
if (proxy != null) {
if (logger.isDebugEnabled()) {
logger.debug("proxying the CANCEL " + sipServletRequest);
}
// Routing State : PROXY case
if (!RoutingState.PROXIED.equals(inviteRequest.getRoutingState())) {
// 10.2.6 if the original request has not been proxied yet the container
// responds to it with a 487 final response
try {
send487Response(inviteTransaction, inviteRequest);
} catch (IllegalStateException iae) {
logger.info("request already proxied, dropping the cancel");
return;
}
} else {
// otherwise, all branches are cancelled, and response processing continues as usual
proxy.cancel();
}
// Fix for Issue 796 : SIP servlet (simple proxy) does not receive "Cancel" requests.
// (http://code.google.com/p/mobicents/issues/detail?id=796)
// JSR 289 Section 10.2.6 Receiving CANCEL : In either case, the application is
// subsequently invoked with the CANCEL request
try {
callServlet(sipServletRequest);
} catch (ServletException e) {
throw new DispatcherException(
Response.SERVER_INTERNAL_ERROR,
"An unexpected servlet exception occured while routing the following CANCEL "
+ request,
e);
} catch (IOException e) {
throw new DispatcherException(
Response.SERVER_INTERNAL_ERROR,
"An unexpected IO exception occured while routing the following CANCEL " + request,
e);
} catch (Throwable e) {
throw new DispatcherException(
Response.SERVER_INTERNAL_ERROR,
"An unexpected exception occured while routing the following CANCEL " + request,
e);
}
} else if (RoutingState.FINAL_RESPONSE_SENT.equals(inviteRequest.getRoutingState())) {
if (logger.isDebugEnabled()) {
logger.debug("the final response has already been sent, nothing to do here");
}
} else {
if (logger.isDebugEnabled()) {
logger.debug("invite transaction of the CANCEL " + inviteTransaction);
}
if (logger.isDebugEnabled()) {
logger.debug(
"invite message : 1xx response was generated ? "
+ ((SipServletRequestImpl) inviteAppData.getSipServletMessage())
.is1xxResponseGenerated());
}
if (logger.isDebugEnabled()) {
logger.debug(
"invite message : Final response was generated ? "
+ ((SipServletRequestImpl) inviteAppData.getSipServletMessage())
.isFinalResponseGenerated());
}
if (logger.isDebugEnabled()) {
logger.debug("replying 487 to INVITE cancelled");
}
// otherwise it means that this is for the app
try {
send487Response(inviteTransaction, inviteRequest);
} catch (IllegalStateException iae) {
logger.info("request already proxied, dropping the cancel");
return;
}
try {
callServlet(sipServletRequest);
} catch (ServletException e) {
throw new DispatcherException(
Response.SERVER_INTERNAL_ERROR,
"An unexpected servlet exception occured while routing the following CANCEL "
+ request,
e);
} catch (IOException e) {
throw new DispatcherException(
Response.SERVER_INTERNAL_ERROR,
"An unexpected IO exception occured while routing the following CANCEL " + request,
e);
} catch (Throwable e) {
throw new DispatcherException(
Response.SERVER_INTERNAL_ERROR,
"An unexpected exception occured while routing the following CANCEL " + request,
e);
}
}
} finally {
sipContext.exitSipApp(sipApplicationSession, sipSession);
}
}
