/*
* Begin Third-Party Call Control.
*/
public void initiateCall() throws IOException {
try {
try {
busyTreatment = new TreatmentManager("busy.au", 0);
} catch (IOException e) {
Logger.println("Invalid busy treatment: " + e.getMessage());
}
Logger.writeFile("Call " + cp + ": Begin SIP third party call");
setState(CallState.INVITED);
InetSocketAddress isa = callHandler.getReceiveAddress();
if (isa == null) {
throw new IOException("can't get receiver socket!");
}
// send INVITE to the CallParticipant
clientTransaction = sipUtil.sendInvite(cp, isa);
if (clientTransaction == null) {
Logger.error("Error placing call: " + cp);
setState(CallState.ENDED, "Reason='Error placing call'");
throw new IOException("Error placing call: " + cp);
}
CallIdHeader callIdHeader =
(CallIdHeader) clientTransaction.getRequest().getHeader(CallIdHeader.NAME);
sipCallId = callIdHeader.getCallId();
sipServerCallback = SipServer.getSipServerCallback();
sipServerCallback.addSipListener(sipCallId, this);
} catch (java.text.ParseException e) {
Logger.println("Call " + cp + " Error placing call " + cp + ": " + e.getMessage());
setState(CallState.ENDED, "Reason='Error placing call " + cp + " " + e.getMessage() + "'");
throw new IOException("Error placing call " + cp + " " + e.getMessage());
} catch (InvalidArgumentException e) {
Logger.println("Call " + cp + " Error placing call " + cp + ": " + e.getMessage());
setState(CallState.ENDED, "Reason='Error placing call " + cp + " " + e.getMessage() + "'");
throw new IOException("Error placing call " + cp + " " + e.getMessage());
} catch (SipException e) {
Logger.println("Call " + cp + " Error placing call " + cp + ": " + e.getMessage());
setState(CallState.ENDED, "Reason='Error placing call " + cp + " " + e.getMessage() + "'");
throw new IOException("Error placing call " + cp + " " + e.getMessage());
}
}
/**
* handles a BYE request
*
* @param request the request
* @param transId the transaction Id
* @throws TransactionDoesNotExistException when the transaction record does not exist.
*/
private void handleBye(Request request, ServerTransaction st) {
try {
CallIdHeader callIdHeader = (CallIdHeader) request.getHeader("Call-Id");
String sipCallId = callIdHeader.getCallId();
if (sipCallId.equals(this.sipCallId)) {
receivedBye = true;
try {
Logger.writeFile("Call " + cp + " has hung up.");
// sipUtil.sendOK(clientTransaction, st, cp);
sipUtil.sendOK(request, st);
} catch (Exception e) {
/*
* We sometimes get a null ServerTransaction
*/
}
cancelRequest("hung up");
sipServerCallback.removeSipListener(sipCallId);
} else {
/*
* this should not happen since the message has been
* delegated to this sip agent.
*/
throw new TransactionDoesNotExistException(
cp + "BYE request received did not " + "match either party: " + request);
}
} catch (TransactionDoesNotExistException e) {
Logger.error("Call " + cp + " Transaction not found " + e.getMessage());
} catch (SipException e) {
Logger.exception("Call " + cp + " SIP Stack error", e);
cancelRequest("handleBye: SIP Stack error " + e.getMessage());
} catch (Exception e) {
Logger.exception("Call " + cp + " Unknown error ", e);
cancelRequest("handleBye: SIP Stack error " + e.getMessage());
}
}
public synchronized void processResponse(ResponseEvent responseReceivedEvent) {
try {
Response response = (Response) responseReceivedEvent.getResponse();
ClientTransaction clientTransaction = responseReceivedEvent.getClientTransaction();
int statusCode = response.getStatusCode();
FromHeader fromHeader = (FromHeader) response.getHeader(FromHeader.NAME);
String displayName = fromHeader.getAddress().getDisplayName();
if (Logger.logLevel >= Logger.LOG_SIP) {
Logger.println(
"Response: statusCode "
+ statusCode
+ " state "
+ getCallState()
+ " fromHeader "
+ displayName
+ " call participant "
+ cp.getName());
}
if (reasonCallTerminated != null) {
/*
* Ignore OK and Request Terminated.
* XXX what's the symbol for 487?
*/
if (statusCode != Response.OK && statusCode != 487) {
if (Logger.logLevel >= Logger.LOG_SIP) {
Logger.println("Call " + cp + ": request cancelled, ignoring response");
}
}
CallIdHeader callIdHeader = (CallIdHeader) response.getHeader("Call-Id");
String sipCallId = callIdHeader.getCallId();
sipServerCallback.removeSipListener(sipCallId);
return;
}
/*
* Some type of global failure that prevents the
* CallParticipant from being contacted, report failure.
*/
if (forceGatewayError) {
statusCode = 500;
forceGatewayError = false;
}
if (statusCode >= 500 && getState() == CallState.INVITED) {
Logger.error(
"Call " + cp + " gateway error: " + statusCode + " " + response.getReasonPhrase());
cancelRequest("gateway error: " + statusCode + " " + response.getReasonPhrase());
return;
} else if (statusCode == Response.PROXY_AUTHENTICATION_REQUIRED
|| statusCode == Response.UNAUTHORIZED) {
if (cp.getProxyCredentials() != null) {
try {
SipServer.handleChallenge(response, clientTransaction, cp.getProxyCredentials())
.sendRequest();
} catch (Exception e) {
Logger.println("Proxy authentification failed " + e);
}
}
return;
} else if (statusCode >= 400) {
// if we get a busy or an unknown error, play busy.
Logger.println("Call " + cp + " got status code :" + statusCode);
cp.setCallEndTreatment(null);
cp.setConferenceJoinTreatment(null);
cp.setConferenceLeaveTreatment(null);
/*
* play busy treatment, but deallocate any resources
* held up by ringBack first, if any.
*/
// stopCallAnsweredTreatment();
if (statusCode == Response.BUSY_HERE) {
try {
if (busyTreatment != null) {
addTreatment(busyTreatment);
// busyTreatment.waitForTreatment();
} else {
Logger.println("Unable to play busy treatment!!!");
}
} catch (Exception e) {
Logger.error("can't start busy treatment!" + sdpBody);
}
CallEvent callEvent = new CallEvent(CallEvent.BUSY_HERE);
callEvent.setInfo(response.getReasonPhrase());
sendCallEventNotification(callEvent);
}
// sipUtil.sendBye(clientTransaction);
cancelRequest(response.getReasonPhrase());
return;
}
/* state machine */
switch (getState()) {
/*
* CallParticipant picked up, send treatment if any,
* and wait for it to finish.
*/
case CallState.INVITED:
if (rejectCall) {
Logger.error(
"Call " + cp + " gateway error: " + statusCode + " " + response.getReasonPhrase());
cancelRequest("gateway error: " + statusCode + " " + response.getReasonPhrase());
return;
}
handleCallParticipantInvited(response, clientTransaction);
break;
/*
* Call established, the ACK needs to be resent.
* According to Ranga, this is done by the NIST SIP Stack.
*/
case CallState.ESTABLISHED:
if (statusCode == Response.OK) {
gotOk = true;
Logger.writeFile("Call " + cp + " Got OK, ESTABLISHED");
if (ackSent == false) {
sipUtil.sendAck(clientTransaction);
ackSent = true;
}
}
break;
case CallState.ENDED:
break; // ignore the response
default:
Logger.error("Process Response bad state " + getState() + "\n" + response);
}
} catch (SipException e) {
Logger.exception("Call " + cp + " SIP Stack error ", e);
cancelRequest("processResponse: SIP Stack error " + e.getMessage());
} catch (Exception e) {
Logger.exception("processResponse: " + cp, e);
cancelRequest("processResponse: SIP Stack error " + e.getMessage());
}
}