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(); } }