void queueRouteErrorMessage(
String unreachableNodeAddress, int unreachableSequenceNumber, ArrayList<String> precusors) {
for (String destinationAdderss : precusors) {
RouteError rrer =
new RouteError(unreachableNodeAddress, unreachableSequenceNumber, destinationAdderss);
sender.queueRoutingMessage(rrer);
}
}
void queueRetryRouteRequest(
String destinationAddress, int destinationSequenceNumber, int retriesLeft) {
RouteRequest rreq =
new RouteRequest(
node.getCurrentSequenceNumber(),
node.getCurrentBroadcastID(),
destinationAddress,
destinationSequenceNumber,
retriesLeft);
sender.queueRoutingMessage(rreq);
// debugResending(rreq);
}
private boolean createOrUpdatePathTo(
String destinationAddress, int destinationSequenceNumber, String nextHop, int hopCount) {
try {
return routingTable.updateRouteTo(
destinationAddress, destinationSequenceNumber, nextHop, hopCount);
} catch (InvalidRouteException e) {
e.printStackTrace();
sender.onNewNodeReachable(destinationAddress);
return true;
} catch (NoSuchRouteException e) {
// e.printStackTrace();
if (routingTable.createForwardRouteEntry(
destinationAddress, destinationSequenceNumber, nextHop, hopCount)) {
sender.onNewNodeReachable(destinationAddress);
return true;
}
}
return false;
}
private void receiveRREQ(RouteRequest routeRequest) {
if (BuildConfig.DEBUG) {
Debug.debugMessage(routeRequest, getMyAddresses(), true, false);
}
createOrUpdatePathTo(
routeRequest.getPreviousHop(),
Constants.UNKNOWN_SEQUENCE_NUMBER,
routeRequest.getPreviousHop(),
1);
if (routingTable.routeRequestExist(routeRequest)) {
return;
}
routingTable.addRouteRequest(routeRequest, false);
routeRequest.incrementHopCount();
createOrUpdatePathTo(
routeRequest.getSourceAddress(),
routeRequest.getSourceSequenceNumber(),
routeRequest.getPreviousHop(),
routeRequest.getHopCount());
RouteReply rrep = null;
try {
rrep = sendRREP(routeRequest);
} catch (InvalidRouteException e) {
routeRequest.setDestinationSequenceNumber(
Math.max(e.getLastSequenceNumber(), routeRequest.getDestinationSequenceNumber()));
} catch (NoSuchRouteException e) {
} finally {
if (rrep != null) {
sender.queueRoutingMessage(rrep);
} else {
sender.queueRoutingMessage(routeRequest);
}
}
}
@Override
public void routeMessage(String destinationAddress, JSONObject message) throws RoutingException {
List<String> myAddresses = null;
if (BuildConfig.DEBUG) {
myAddresses = new ArrayList<String>();
myAddresses.add("Prop Node");
}
UserDataMessage dataMessage = new UserDataMessage(message);
dataMessage.setDestinationAddress(destinationAddress);
if (IRouter.destinationIsBroacast(destinationAddress)) {
dataMessage.setNextHop(destinationAddress);
}
sender.queueMyDataMessage(dataMessage);
}
void queueRouteErrorMessage(
String unreachableNodeAddress, int unreachableSequenceNumber, String destinationAddress) {
RouteError rrer =
new RouteError(unreachableNodeAddress, unreachableSequenceNumber, destinationAddress);
sender.queueRoutingMessage(rrer);
}
public void onRouteEstablishmentFailure(String destinationAddress) {
sender.onRouteEstablishmentFailure(destinationAddress);
notifier.notifyAboutDestinationUnreachable(destinationAddress);
}