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AngelBlankEspduTCPReceiverBSenderA.java 12.23 KiB
import java.io.*;
import java.net.*;
import java.util.*;
import edu.nps.moves.dis.*;
import edu.nps.moves.disutil.DisTime;
/**
* Creates and sends ESPDUs in IEEE binary format.
*
* @author DMcG
*/
public class AngelBlankEspduTCPReceiverBSenderA
{
public static final int NUMBER_TO_SEND = 5000;
public enum NetworkMode{UNICAST, MULTICAST, BROADCAST};
/** default multicast group we send on */
public static final String DEFAULT_MULTICAST_GROUP="239.1.2.4";
public static final int TCP_DESTINATION_PORT = 2998;
/** Port we send on */
public static final int DIS_DESTINATION_PORT = 3000;
/** Possible system properties, passed in via -Dattr=val
* networkMode: unicast, broadcast, multicast
* destinationIp: where to send the packet. If in multicast mode, this can be mcast.
* To determine bcast destination IP, use an online bcast address
* caclulator, for example http://www.remotemonitoringsystems.ca/broadcast.php
* If in mcast mode, a join() will be done on the mcast address.
* port: port used for both source and destination.
* @param args
*/
public static void main(String args[])
{
/** an entity state pdu */
EntityStatePdu espdu = new EntityStatePdu();
MulticastSocket socket = null;
DisTime disTime = DisTime.getInstance();
int alternator = -1;
// ICBM coordinates for my office
// double lat = 36.595517;
// double lon = -121.877000;
// Default settings. These are used if no system properties are set.
// If system properties are passed in, these are over ridden.
int port = DIS_DESTINATION_PORT;
NetworkMode mode = NetworkMode.MULTICAST;
InetAddress destinationIp = null;
try
{
destinationIp = InetAddress.getByName(DEFAULT_MULTICAST_GROUP);
}
catch(Exception e)
{
System.out.println(e + " Cannot create multicast address");
System.exit(0);
}
// All system properties, passed in on the command line via -Dattribute=value
Properties systemProperties = System.getProperties();
// IP address we send to
String destinationIpString = systemProperties.getProperty("destinationIp");
// Port we send to, and local port we open the socket on String portString = systemProperties.getProperty("port");
// Network mode: unicast, multicast, broadcast
String networkModeString = systemProperties.getProperty("networkMode"); // unicast or multicast or broadcast
// Set up a socket to send information
try
{
// Port we send to
if(portString != null)
port = Integer.parseInt(portString);
socket = new MulticastSocket(DIS_DESTINATION_PORT);
// Where we send packets to, the destination IP address
if(destinationIpString != null)
{
destinationIp = InetAddress.getByName(destinationIpString);
}
// Type of transport: unicast, broadcast, or multicast
if(networkModeString != null)
{
if(networkModeString.equalsIgnoreCase("unicast"))
mode = NetworkMode.UNICAST;
else if(networkModeString.equalsIgnoreCase("broadcast"))
mode = NetworkMode.BROADCAST;
else if(networkModeString.equalsIgnoreCase("multicast"))
{
mode = NetworkMode.MULTICAST;
if(!destinationIp.isMulticastAddress())
{
throw new RuntimeException("Sending to multicast address, but destination address " + destinationIp.toString() + "is not multicast");
}
socket.joinGroup(destinationIp);
}
} // end networkModeString
}
catch(Exception e)
{
System.out.println("Unable to initialize networking. Exiting.");
System.out.println(e);
System.exit(-1);
}
try
{
//int connectionCount = 0;
ServerSocket serverSocket = new ServerSocket(TCP_DESTINATION_PORT);
while(true){
try
{
Socket clientConnection = serverSocket.accept();
System.out.println("RA SB received TCP connection.");
InputStream is = clientConnection.getInputStream();
InputStreamReader isr = new InputStreamReader(is);
BufferedReader br = new BufferedReader(isr);
System.out.println("RA SB waiting to readline.");
int entitySite = Integer.parseInt(br.readLine());
int entityApplication = Integer.parseInt(br.readLine());
int entityEntity = Integer.parseInt(br.readLine());
short entityEntityKind = Short.parseShort(br.readLine());
int entityCountry = Integer.parseInt(br.readLine());
short entityDomain = Short.parseShort(br.readLine());
short entityCategory = Short.parseShort(br.readLine()); short entitySubcategory = Short.parseShort(br.readLine());
short entitySpec = Short.parseShort(br.readLine());
System.out.println("RA SB reading complete.");
// Initialize values in the Entity State PDU object. The exercise ID is
// a way to differentiate between different virtual worlds on one network.
// Note that some values (such as the PDU type and PDU family) are set
// automatically when you create the ESPDU.
espdu.setExerciseID((short)1);
// The EID is the unique identifier for objects in the world. This
// EID should match up with the ID for the object specified in the
// VMRL/x3d/virtual world.
EntityID eid = espdu.getEntityID();
eid.setSite(entitySite); // 0 is apparently not a valid site number, per the spec
eid.setApplication(entityApplication);
eid.setEntity(entityEntity);
// Set the entity type. SISO has a big list of enumerations, so that by
// specifying various numbers we can say this is an M1A2 American tank,
// the USS Enterprise, and so on. We'll make this a tank. There is a
// separate project elsehwhere in this project that implements DIS
// enumerations in C++ and Java, but to keep things simple we just use
// numbers here.
EntityType entityType = espdu.getEntityType();
entityType.setEntityKind(entityEntityKind); // Platform (vs lifeform, munition, sensor, etc.)
entityType.setCountry(entityCountry); // USA
entityType.setDomain(entityDomain); // AIR (vs air, surface, subsurface, space)
entityType.setCategory(entityCategory); // Tank
entityType.setSubcategory(entitySubcategory); // M1 Abrams
entityType.setSpec(entitySpec); // M1A2 Abrams
//Set<InetAddress> bcastAddresses = getBroadcastAddresses();
// Loop through sending N ESPDUs
int ts = disTime.getDisAbsoluteTimestamp();
espdu.setTimestamp(ts);
// double direction = Math.pow((double)(-1.0), (double)(idx));
// lon = lon + (direction * 0.00006);
// System.out.println(lon);
//
// double disCoordinates[] = CoordinateConversions.getXYZfromLatLonDegrees(lat, lon, 1.0);
// Vector3Double location = espdu.getEntityLocation();
// location.setX(disCoordinates[0]);
// location.setY(disCoordinates[1]);
// location.setZ(disCoordinates[2]);
// System.out.println("lat, lon:" + lat + ", " + lon);
// System.out.println("DIS coord:" + disCoordinates[0] + ", " + disCoordinates[1] + ", " + disCoordinates[2]);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
DataOutputStream dos = new DataOutputStream(baos);
espdu.marshal(dos);
//FirePdu fire = new FirePdu();
//byte[] fireArray = fire.marshal();
// The byte array here is the packet in DIS format. We put that into a
// datagram and send it.
byte[] data = baos.toByteArray();
DatagramPacket packet = new DatagramPacket(data, data.length, InetAddress.getByName(DEFAULT_MULTICAST_GROUP), DIS_DESTINATION_PORT);
socket.send(packet);
/**bcastAddresses = getBroadcastAddresses();
Iterator it = bcastAddresses.iterator();
while(it.hasNext()) {
InetAddress bcast = (InetAddress)it.next();
System.out.println("RA SB Sending bcast to " + bcast + "EntityID: " + eid.getEntity());
DatagramPacket packet = new DatagramPacket(data, data.length, bcast, DIS_DESTINATION_PORT);
socket.send(packet);
//packet = new DatagramPacket(fireArray, fireArray.length, bcast, DIS_DESTINATION_PORT);
//socket.send(packet);
}**/
// Send every 1 sec. Otherwise this will be all over in a fraction of a second.
//Thread.sleep(3000);
// location = espdu.getEntityLocation();
System.out.println(" EID=[" + eid.getSite() + "," + eid.getApplication() + "," + eid.getEntity() + "]");
// System.out.println(" DIS coordinates location=[" + location.getX() + "," + location.getY() + "," + location.getZ() + "]");
// double c[] = {location.getX(), location.getY(), location.getZ()};
// double lla[] = CoordinateConversions.xyzToLatLonDegrees(c);
// System.out.println(" Location (lat/lon/alt): [" + lla[0] + ", " + lla[1] + ", " + lla[2] + "]");
clientConnection.close();
}
catch(Exception e)
{
System.out.println(e);
}
}
}
catch(Exception e)
{
System.out.println(e);
}
}
/**
* A number of sites get all snippy about using 255.255.255.255 for a bcast
* address; it trips their security software and they kick you off their
* network. (Comcast, NPS.) This determines the bcast address for all
* connected interfaces, based on the IP and subnet mask. If you have
* a dual-homed host it will return a bcast address for both. If you have
* some VMs running on your host this will pick up the addresses for those
* as well--eg running VMWare on your laptop with a local IP this will
* also pick up a 192.168 address assigned to the VM by the host OS.
*
* @return set of all bcast addresses
*/
public static Set<InetAddress> getBroadcastAddresses()
{
Set<InetAddress> bcastAddresses = new HashSet<InetAddress>();
Enumeration interfaces;
try
{
interfaces = NetworkInterface.getNetworkInterfaces();
while(interfaces.hasMoreElements())
{
NetworkInterface anInterface = (NetworkInterface)interfaces.nextElement();
if(anInterface.isUp())
{
Iterator it = anInterface.getInterfaceAddresses().iterator();
while(it.hasNext())
{
InterfaceAddress anAddress = (InterfaceAddress)it.next();
if((anAddress == null || anAddress.getAddress().isLinkLocalAddress()))
continue;
//System.out.println("Getting bcast address for " + anAddress);
InetAddress abcast = anAddress.getBroadcast();
if(abcast != null) bcastAddresses.add(abcast);
}
}
}
}
catch(Exception e)
{
e.printStackTrace();
System.out.println(e);
}
return bcastAddresses;
}
}