private void route(JsonObject message, int fromNode) {
String text = message.getString("text", null);
int from = message.getInt("from", -1);
int to = message.getInt("to", -1);
if (fromNode == from && to >= 0 && text != null) {
SwingUtilities.invokeLater(
() -> {
messages.addPacket(from, to, text, getByNode(from).getNetwork());
});
if (to == 0) {
for (int i = 0; i < connections.size(); i++) {
Connection c = connections.get(i);
if (c != null && links.isNeighbour(fromNode, c.getNode())) {
send(c, text, from, to);
}
}
} else {
Connection c = getByNode(to);
if (c != null && links.isNeighbour(from, to)) {
send(c, text, from, to);
}
}
}
}
public void addConnection(BufferedOutputStream os, InputStream isr, InetAddress a)
throws HandshakeException {
final Connection c = new Connection(os, isr);
int setNode = c.getNode();
boolean keep = false;
if (session == c.getSession() && setNode != 0) {
// Loop through the connections and find the node number
for (int i = 0; i < connections.size(); i++) {
Connection cc = connections.get(i);
if (cc.getNode() == setNode) {
// Keep old node Name
c.setHostname(cc.getHostname());
c.setNetwork(cc.getNetwork());
final int actualNode = i;
SwingUtilities.invokeLater(
() -> {
// This is not a structural modification so will not
// cause Thread problems
connections.set(actualNode, c);
});
keep = true;
synchronized (queue) {
// add the appropriate status reply
queue.add(new ConnectMessage(c, -1, true));
}
break;
}
}
}
if (!keep) {
if (started) {
throw new HandshakeException("Cannot add new connections after the game has started");
}
c.setup(session);
try {
SwingUtilities.invokeAndWait(
() -> {
connections.addElement(c);
});
} catch (InvocationTargetException | InterruptedException e) {
throw new HandshakeException("Failed to add new connection");
}
(new ConnectMessage(c, -1, true)).send();
}
}
private Connection getByNode(int node) {
for (int i = 0; i < connections.size(); i++) {
Connection c = connections.get(i);
if (c.getNode() == node) {
return c;
}
}
return null;
}
// This method can only be executed in the EDT so is safe from Connections
// updates
public void updateStatus() {
// The first update triggers network building.
if (!started) {
started = true;
int maxNets = Math.max(1, connections.size() / MIN_PER_NET);
int numNets = Math.min((connections.size() + MAX_PER_NET - 1) / MAX_PER_NET, maxNets);
createCycles(numNets);
// Begin to check for messages.
synchronized (queue) {
this.start();
}
}
int l = connections.size();
List<String> texts = null;
if (links.getOffset() != 0 && !links.isCheckwhois()) {
texts = new ArrayList<String>();
Texts.choose_messages(texts, l, links.getCorruptionRate() > 0);
}
// mark any current messages out of date
startTime = System.currentTimeMillis();
synchronized (queue) {
for (int i = 0; i < l; i++) {
Connection c = connections.get(i);
if (c != null) {
if (links.getOffset() == 0) {
queue.add(new TaskMessage(c, -1, links));
} else {
int recipient = cycles.get(c.getNetwork()).offsetNode(c.getNode(), links.getOffset());
System.out.println("Node:" + c.getNode() + "sending to: " + recipient);
if (links.isCheckwhois()) {
String unknown = connections.get(nodeToIndex(recipient)).getHostname();
queue.add(new TaskMessage(c, -1, links, unknown));
} else {
queue.add(new TaskMessage(c, -1, links, recipient, texts.get(i)));
}
}
}
}
}
}
@Override
protected void sendRequest(
Connection connection,
long requestId,
String action,
TransportRequest request,
TransportRequestOptions options)
throws IOException {
if (recoveryActionToBlock.equals(action) || requestBlocked.getCount() == 0) {
logger.info("--> preventing {} request", action);
requestBlocked.countDown();
if (dropRequests) {
return;
}
throw new ConnectTransportException(
connection.getNode(), "DISCONNECT: prevented " + action + " request");
}
super.sendRequest(connection, requestId, action, request, options);
}
@Override
public void run() {
try {
while (true) {
synchronized (queue) {
sendNow(queue);
}
int l = connections.size();
for (int i = 0; i < l; i++) {
Connection c = connections.get(i);
if (c != null && c.ready()) {
JsonObject message = c.read();
if (message != null) {
route(message, c.getNode());
}
}
}
Thread.sleep(1000L);
// System.out.print('+');
}
} catch (InterruptedException e) {
System.out.println("Closing server!");
}
}
