/**
* Load Listeners the given in parameter with the given classloader
*
* @param listenerList the list of listeners to load
* @param classLoader the classloader to load the listeners with
* @return true if all the listeners have been successfully loaded, false otherwise
*/
public boolean loadListeners(String[] listeners, ClassLoader classLoader) {
// Instantiate all the listeners
for (String className : listeners) {
try {
Class listenerClass = Class.forName(className, false, classLoader);
EventListener listener = (EventListener) listenerClass.newInstance();
((SipContext) sipContext).getAnnotationProcessor().processAnnotations(listener);
SipServletImpl sipServletImpl =
(SipServletImpl) sipContext.findChildrenByClassName(className);
if (sipServletImpl != null) {
listener = (EventListener) sipServletImpl.allocate();
listenerServlets.put(listener, sipServletImpl);
} else {
SipServlet servlet = (SipServlet) listenerClass.getAnnotation(SipServlet.class);
if (servlet != null) {
sipServletImpl = (SipServletImpl) sipContext.findChildrenByName(servlet.name());
if (sipServletImpl != null) {
listener = (EventListener) sipServletImpl.allocate();
listenerServlets.put(listener, sipServletImpl);
}
}
}
addListenerToBunch(listener);
} catch (Exception e) {
logger.fatal("Cannot instantiate listener class " + className, e);
return false;
}
}
return true;
}
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);
}
}
