private String receiveDataUdp(InetSocketAddress clientAddress) throws IOException, JSONException {
EmployeeList employees = new EmployeeList();
DatagramSocket datagramServer = new DatagramSocket(clientAddress);
byte dataFromServer[] = new byte[2048];
boolean isTimeExpired = false;
datagramServer.setSoTimeout((int) SECONDS.toMillis(PROTOCOL_GROUP_TIMEOUT - 5));
System.out.println(
"[INFO] -----------------------------------------\n"
+ "[INFO] Collecting information from nodes....");
while (!isTimeExpired) {
DatagramPacket datagramPacketacket =
new DatagramPacket(dataFromServer, dataFromServer.length);
try {
datagramServer.receive(datagramPacketacket);
} catch (SocketTimeoutException e) {
System.out.println(
"[WARNING] -----------------------------------------\n"
+ "[WARNING] Waiting time expired...");
isTimeExpired = true;
continue;
}
String receivedJson = (String) deserialize(datagramPacketacket.getData());
System.out.println("[INFO] " + "Received employee in JSON: " + receivedJson);
employees.add(jsonToEmployee(receivedJson));
}
datagramServer.close();
return employeeToXml(employees);
}
private void sendDataTcp(int dataServerPort, String xmlEmployees) throws IOException {
ServerSocket serverSocket = new ServerSocket(dataServerPort);
serverSocket.setSoTimeout((int) SECONDS.toMillis(100));
boolean isTimeExpired = false;
while (!isTimeExpired) {
try {
Socket socket = serverSocket.accept(); // Blocking call!
serialize(xmlEmployees, socket.getOutputStream());
socket.close();
} catch (SocketTimeoutException e) {
System.out.println(
"[WARNING] ----------------------------------------- \n"
+ "[WARNING] Waiting time expired... Socket is closed.");
isTimeExpired = true;
continue;
}
}
serverSocket.close();
}