// Called when a peer we're trying to connect to sends us a message
private void processNewPeer(SocketChannel c) throws IOException {
ByteBuffer message = ChannelHelper.readBytes(c, 4);
String recognize = utf8.decode(message).toString();
if (!recognize.equals("bam!")) {
// Connected to something that wasn't a BAMPong client...
c.close();
Peer p = new_peers.remove(c);
log("Closing attempt to " + p.getName() + " got " + recognize);
return;
}
// Assemble response
ByteBuffer name = utf8.encode(nick);
message = ByteBuffer.allocateDirect(name.limit() + 10); // id(4), port(4), name(2+limit)
message.putInt(id);
message.putInt(getPort());
ChannelHelper.putString(message, name);
message.flip();
// Send message
c.write(message);
// Move socket to connected peers.
Peer peer = new_peers.remove(c);
peers.put(c, peer);
sockets.put(peer, c);
}
public void buildData() {
Peer peer;
int size = peerList.size();
data = null;
data = new Object[size][6];
for (int i = 0; i < size; i++) {
peer = peerList.get(i);
data[i][0] = peer.getName();
data[i][1] = String.valueOf(peer.getPonderations().getPonderation(PeerActionKill.class));
data[i][2] = String.valueOf(peer.getPonderations().getPonderation(PeerActionAvg.class));
data[i][3] = String.valueOf(peer.getPonderations().getPonderation(PeerActionTalk.class));
data[i][4] = String.valueOf(peer.getPonderations().getPonderation(PeerActionQuery.class));
data[i][5] = String.valueOf(peer.getPonderations().getPonderation(PeerActionMove.class));
}
fireTableChanged(new TableModelEvent(this));
}
// Called when an established peer sends us a message
private void processPeerMessage(SocketChannel c) throws IOException {
Peer peer = peers.get(c);
ByteBuffer b = ByteBuffer.allocateDirect(1);
int read = c.read(b);
if (read < 0) {
c.close();
return;
}
if (read < 1) return; // No data?
b.flip();
byte type = b.get();
switch (type) {
case MSG_DEBUG:
log(peer.getName() + ": " + ChannelHelper.getString(c));
break;
case MSG_BALL:
int id = ChannelHelper.getInt(c);
double position = ChannelHelper.getDouble(c);
double dx = ChannelHelper.getDouble(c);
double dy = ChannelHelper.getDouble(c);
int D = ChannelHelper.getInt(c);
if (listener != null) listener.receiveBall(id, position, dx, dy, D);
break;
// Dropped ball
// Informative to all peers & server
// (Maybe implement as passing ball to server?)
// Server may respond with “you lose”
// Drop player
// Paxos confirmation that client is gone
// Heartbeat?
// Probably only sent in response to drop
// Ping/pong messages
// Server failure
// All peers, send choice of backup
default:
System.err.println("Unknown peer message: " + type);
}
}
