/**
* handles the INVITED state.
*
* @param response the response
* @param clientTransaction the client transaction
* @throws SipException SIP stack related error
*/
private void handleCallParticipantInvited(Response response, ClientTransaction clientTransaction)
throws ParseException, SipException, InvalidArgumentException {
FromHeader fromHeader = (FromHeader) response.getHeader(FromHeader.NAME);
String displayName = fromHeader.getAddress().getDisplayName();
int statusCode = response.getStatusCode();
Logger.println(
"handleCallParticipantInvited "
+ cp
+ " status "
+ statusCode
+ " "
+ response.getReasonPhrase());
Logger.println("handleCallParticipantInvited , displayname " + displayName);
CallIdHeader callIdHeader = (CallIdHeader) response.getHeader(CallIdHeader.NAME);
if (sipCallId.equals(callIdHeader.getCallId())
&& displayName.equals(cp.getDisplayName())
&& (statusCode == Response.OK || statusCode == Response.SESSION_PROGRESS)
&& ((CSeqHeader) response.getHeader(CSeqHeader.NAME)).getMethod().equals(Request.INVITE)) {
if (statusCode == Response.SESSION_PROGRESS) {
/*
* For some calls, we never get an OK. Instead we just get
* SESSION_PROGRESS. In order to handle these calls, we treat
* SESSION_PROGRESS as OK. If an OK arrives later, we'll
* send an ACK. This flag allows us to enable or
* disable this workaround for each call.
*
* The problem with always treating SESSION_PROGRESS as OK
* is that in a conference everybody will hear the ringing sound
* which the remote call sends until the call is actually answered.
* This can be avoided if joinConfirmation is specified.
* The other problem is that if we treat SESSION_PROGRESS
* as though the call has been answered, then we'll start
* playing the treatment before a person really answers to
* hear the treatment.
*/
if (cp.getHandleSessionProgress() == false) {
Logger.writeFile("Call " + cp + " Ignoring SESSION_PROGRESS");
return;
}
Logger.writeFile("Call " + cp + " Treating SESSION_PROGRESS as OK");
}
if (response.getRawContent() == null) {
Logger.error("Call " + cp + " no SDP in OK Response!");
cancelRequest("SIP error! no SDP in OK Response!");
return;
}
this.clientTransaction = clientTransaction;
if (statusCode == Response.OK) {
gotOk = true;
Logger.writeFile("Call " + cp + " Got OK, call answered\n" + response);
}
ToHeader toHeader = (ToHeader) response.getHeader(ToHeader.NAME);
/*
* We got an OK response.
*
* send an ACK back to the CallParticipant
*/
if (statusCode == Response.OK) {
sipUtil.sendAck(clientTransaction);
ackSent = true;
}
if (callAnswered) {
Logger.writeFile("Call " + cp + " done processing OK");
return;
}
/*
* Remember the IP and port of where to send data to
* the CallParticipant.
*/
sdpBody = new String(response.getRawContent());
SdpInfo sdpInfo;
try {
sdpInfo = sipUtil.getSdpInfo(sdpBody, false);
} catch (ParseException e) {
Logger.error("Call " + cp + " Invalid SDP in OK Response! " + e.getMessage());
cancelRequest("SIP error! Invalid SDP in OK Response!");
return;
}
MediaInfo mediaInfo = sdpInfo.getMediaInfo();
InetSocketAddress isa =
new InetSocketAddress(sdpInfo.getRemoteHost(), sdpInfo.getRemotePort());
InetSocketAddress rtcpAddress = sdpInfo.getRtcpAddress();
setEndpointAddress(
isa,
mediaInfo.getPayload(),
sdpInfo.getTransmitMediaInfo().getPayload(),
sdpInfo.getTelephoneEventPayload(),
rtcpAddress);
/*
* The CallParticipant has answered.
* If join confirmation is required, we remain in the
* INVITED state. We set the callAnswered flag so that
* if the join confirmation times out we know to
* send a BYE rather than a CANCEL.
*/
callAnswered = true;
if (cp.getJoinConfirmationTimeout() == 0) {
setState(CallState.ANSWERED);
}
/*
* Start treatment if any and wait for it to finish.
* When the treatment finishes, notification will
* be delivered to our parent which will indicate
* we're ready for the conference.
*
* If there's no treatment to be played, we're ready now
* unless we're waiting for join confirmation..
*/
initializeCallAnsweredTreatment();
if (callAnsweredTreatment != null) {
startCallAnsweredTreatment();
} else {
if (cp.getJoinConfirmationTimeout() == 0) {
setState(CallState.ESTABLISHED);
}
}
} else {
Logger.writeFile("Call " + cp + " Ignoring response: " + response.getReasonPhrase());
if (Logger.logLevel >= Logger.LOG_SIP) {
Logger.println("Call " + cp + " Response: " + response);
}
}
}
