private void sendArpNdpProbe(
ConnectPoint connectPoint,
IpAddress targetIp,
IpAddress sourceIp,
MacAddress sourceMac,
VlanId vlan) {
Ethernet probePacket = null;
if (targetIp.isIp4()) {
// IPv4: Use ARP
probePacket = buildArpRequest(targetIp, sourceIp, sourceMac, vlan);
} else {
// IPv6: Use Neighbor Discovery
probePacket = buildNdpRequest(targetIp, sourceIp, sourceMac, vlan);
}
List<Instruction> instructions = new ArrayList<>();
instructions.add(Instructions.createOutput(connectPoint.port()));
TrafficTreatment treatment =
DefaultTrafficTreatment.builder().setOutput(connectPoint.port()).build();
OutboundPacket outboundPacket =
new DefaultOutboundPacket(
connectPoint.deviceId(), treatment, ByteBuffer.wrap(probePacket.serialize()));
packetService.emit(outboundPacket);
}
@Override
public final void setChannel(Channel channel) {
this.channel = channel;
final SocketAddress address = channel.getRemoteAddress();
if (address instanceof InetSocketAddress) {
final InetSocketAddress inetAddress = (InetSocketAddress) address;
final IpAddress ipAddress = IpAddress.valueOf(inetAddress.getAddress());
if (ipAddress.isIp4()) {
channelId = ipAddress.toString() + ':' + inetAddress.getPort();
} else {
channelId = '[' + ipAddress.toString() + "]:" + inetAddress.getPort();
}
}
}
