public void handleUpdatePacket(Packet p, String from) {
// dont update packets that came from this device
if (p.getSource().equals(localDevice.getBluetoothAddress())) return;
// get the md5 of the payload of the packet and store it
// if the previous md5 is the same with the new one
// then this packet is redundant
String hash = md5(p.getPayload());
if (history.containsKey(p.getSource())) {
String old = history.get(p.getSource());
if (old.equals(hash)) return;
}
ByteBuffer buffer = ByteBuffer.allocate(p.getPayload().length);
buffer.put(p.getPayload());
routingTable.remove(p.getSource());
routingTable.add(p.getSource());
byte[] tmp = new byte[12];
while (buffer.hasRemaining()) {
buffer.get(tmp, 0, 12);
routingTable.add(p.getSource(), new String(tmp));
}
for (String address : connections.keySet()) {
if (!address.equals(from)) {
connections.get(address).offer(p);
}
}
history.put(p.getSource(), hash);
}
public void removeConnection(String address) {
mutex.writeLock().lock();
try {
if (connections.containsKey(address)) {
ConnectionHandler handler = connections.get(address);
connections.remove(address);
routingTable.remove(localDevice.getBluetoothAddress(), address);
handler.setStop(true);
}
} finally {
mutex.writeLock().unlock();
}
}