/** * BLOCKING if queue between here and PacketHandler is full. * * @return zero (was queue size) */ private final int doReceive(UDPPacket packet) { if (!_keepRunning) return 0; if (_log.shouldLog(Log.INFO)) _log.info("Received: " + packet); RemoteHostId from = packet.getRemoteHost(); if (_transport.isInDropList(from)) { if (_log.shouldLog(Log.INFO)) _log.info("Ignoring packet from the drop-listed peer: " + from); _context.statManager().addRateData("udp.ignorePacketFromDroplist", packet.getLifetime()); packet.release(); return 0; } // drop anything apparently from our IP (any port) if (Arrays.equals(from.getIP(), _transport.getExternalIP()) && !_transport.allowLocal()) { if (_log.shouldLog(Log.WARN)) _log.warn("Dropping (spoofed?) packet from ourselves"); packet.release(); return 0; } /** * ** packet.enqueue(); boolean rejected = false; int queueSize = 0; long headPeriod = 0; * * <p>UDPPacket head = _inboundQueue.peek(); if (head != null) { headPeriod = * head.getLifetime(); if (headPeriod > MAX_QUEUE_PERIOD) { rejected = true; } } if (!rejected) * { ** */ try { _handler.queueReceived(packet); } catch (InterruptedException ie) { packet.release(); _keepRunning = false; } // return queueSize + 1; return 0; /** * ** } * * <p>// rejected packet.release(); _context.statManager().addRateData("udp.droppedInbound", * queueSize, headPeriod); if (_log.shouldLog(Log.WARN)) { queueSize = _inboundQueue.size(); * StringBuilder msg = new StringBuilder(); msg.append("Dropping inbound packet with "); * msg.append(queueSize); msg.append(" queued for "); msg.append(headPeriod); msg.append(" * packet handlers: ").append(_transport.getPacketHandlerStatus()); _log.warn(msg.toString()); } * return queueSize; ** */ }