/**
* Indicates a user request to answer an incoming call from this <tt>CallPeer</tt>.
*
* <p>Sends an OK response to <tt>callPeer</tt>. Make sure that the call peer contains an SDP
* description when you call this method.
*
* @throws OperationFailedException if we fail to create or send the response.
*/
public synchronized void answer() throws OperationFailedException {
RtpDescriptionPacketExtension answer = null;
try {
getMediaHandler().getTransportManager().wrapupConnectivityEstablishment();
answer = getMediaHandler().generateSessionAccept(true);
} catch (IllegalArgumentException e) {
sessAcceptedWithNoCands = new SessionIQ();
// HACK apparently FreeSwitch need to have accept before
answer = getMediaHandler().generateSessionAccept(false);
SessionIQ response =
GTalkPacketFactory.createSessionAccept(
sessionInitIQ.getTo(), sessionInitIQ.getFrom(), getSID(), answer);
getProtocolProvider().getConnection().sendPacket(response);
return;
} catch (Exception exc) {
logger.info("Failed to answer an incoming call", exc);
// send an error response
String reasonText = "Error: " + exc.getMessage();
SessionIQ errResp =
GTalkPacketFactory.createSessionTerminate(
sessionInitIQ.getTo(),
sessionInitIQ.getFrom(),
sessionInitIQ.getID(),
Reason.FAILED_APPLICATION,
reasonText);
setState(CallPeerState.FAILED, reasonText);
getProtocolProvider().getConnection().sendPacket(errResp);
return;
}
SessionIQ response =
GTalkPacketFactory.createSessionAccept(
sessionInitIQ.getTo(), sessionInitIQ.getFrom(), getSID(), answer);
// send the packet first and start the stream later in case the media
// relay needs to see it before letting hole punching techniques through.
if (sessAcceptedWithNoCands == null) getProtocolProvider().getConnection().sendPacket(response);
try {
getMediaHandler().start();
} catch (UndeclaredThrowableException e) {
Throwable exc = e.getUndeclaredThrowable();
logger.info("Failed to establish a connection", exc);
// send an error response
String reasonText = "Error: " + exc.getMessage();
SessionIQ errResp =
GTalkPacketFactory.createSessionTerminate(
sessionInitIQ.getTo(),
sessionInitIQ.getFrom(),
sessionInitIQ.getID(),
Reason.GENERAL_ERROR,
reasonText);
getMediaHandler().getTransportManager().close();
setState(CallPeerState.FAILED, reasonText);
getProtocolProvider().getConnection().sendPacket(errResp);
return;
}
// tell everyone we are connecting so that the audio notifications would
// stop
setState(CallPeerState.CONNECTED);
}
