public static byte[] Encode(BeaconMessage beaconMessage)
{
return(InternalEncode(BeaconMessageTag)
.Concat(InternalEncode(beaconMessage.ServiceId))
.Concat(BitConverter.GetBytes((ushort)IPAddress.HostToNetworkOrder((short)beaconMessage.Port)))
.Concat(InternalEncode(beaconMessage.ServiceName))
.ToArray());
}
public Beacon(IPAddress localIp, string serviceId, ushort port, string serviceName)
{
Message = new BeaconMessage(serviceId, port, serviceName);
_udp = new UdpClient(new IPEndPoint(localIp, Protocol.DiscoveryPort));
_udp.Client.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);
_udp.AllowNatTraversal(true);
_udp.BeginReceive(Receive, null);
}
private void AddLocation(BeaconMessage message, IPEndPoint address)
{
// Modifications to the collection are done in the thread that created the Probe
// To ensure handler to the CollectionChanged event are not surprised
var location = new BeaconLocation(message, address);
_callerThread.Send(s =>
{
var existingLocation = _locations.FirstOrDefault(bl => bl.Equals(location));
if (existingLocation != null)
{
existingLocation.RefreshTime();
}
else
{
_locations.Add(location);
}
}, null);
}
public static bool TryDecodeBeaconMessage(byte[] data, out BeaconMessage beaconMessage)
{
string tag = InternalDecode(data, out int index);
if (!BeaconMessageTag.Equals(tag))
{
beaconMessage = new BeaconMessage();
return(false);
}
string serviceId = InternalDecode(data, index, out index);
ushort port = (ushort)IPAddress.NetworkToHostOrder((short)BitConverter.ToUInt16(data, index));
index += sizeof(ushort);
string serviceName = InternalDecode(data, index);
beaconMessage = new BeaconMessage(serviceId, port, serviceName);
return(true);
}
public BeaconLocation(BeaconMessage message, IPEndPoint remote)
{
ServiceName = message.ServiceName;
Address = new IPEndPoint(remote.Address, message.Port);
RefreshTime();
}