/** Handles operation of the error simulator server. */
public void start() {
DatagramPacket receivePacket = null;
try {
errorSimulatorSock = new DatagramSocket(Configurations.ERROR_SIM_LISTEN_PORT);
// errorSimulatorSock.setSoTimeout(30000);
} catch (SocketException e) {
e.printStackTrace();
System.exit(1);
}
/*
* - Receive packets until the admin console gives the shutdown signal.
* - Since receiving a packet is a blocking operation, timeouts have been set to loop back
* and check if the close signal has been given.
*/
while (active.get()) {
try {
// Create the packet for receiving.
byte[] buffer = new byte[Configurations.MAX_BUFFER];
this.mErrorOptionSettings = this.mErrorUI.getErrorCodeFromUser(testInstance);
if (this.mErrorOptionSettings.first == ErrorType.EXIT) {
active.set(false);
break;
}
receivePacket = new DatagramPacket(buffer, buffer.length);
logger.print(
Logger.VERBOSE,
String.format(Strings.ES_INITIALIZED, Configurations.ERROR_SIM_LISTEN_PORT));
logger.print(Logger.VERBOSE, Strings.ES_START_LISTENING);
errorSimulatorSock.receive(receivePacket);
} catch (SocketTimeoutException e) {
continue;
} catch (SocketException e) {
continue;
} catch (IOException e) {
System.out.println(Strings.SERVER_RECEIVE_ERROR);
e.printStackTrace();
}
System.out.println(
BufferPrinter.acceptConnectionMessage(
Strings.SERVER_ACCEPT_CONNECTION, receivePacket.getSocketAddress().toString()));
Thread service =
new Thread(
new ErrorSimulatorService(
receivePacket, this, this.mErrorOptionSettings, testInstance),
CLASS_TAG);
threads.addElement(service);
service.start();
}
this.errorSimulatorSock.close();
// Wait for all service threads to close before completely exiting.
for (Thread t : threads) {
try {
t.join();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
/** Constructor for ErrorSimulatorServer that initializes the thread container 'threads'. */
public ErrorSimulatorServer() {
threads = new Vector<Thread>();
this.mErrorUI = new TFTPUserInterface();
testInstance = this.mErrorUI.printTestableProcess();
logger.setClassTag(CLASS_TAG);
}