public void VehiclePosition(VehiclePositionEvent vehiclePositionEvent)
{
clientManager.ConnectedIds.Add(Context.ConnectionId);
var config = clientManager.GetConfiguration(Context.ConnectionId);
vehiclePositionEvent.Source = Context.ConnectionId;
vehiclePositionEvent.Target = config["endpointAddress"];
vehicleEventQueue.Enqueue(vehiclePositionEvent);
}
public byte[] VehiclePositionReport(VehiclePositionEvent vehiclePositionEvent)
{
using (var stream = new MemoryStream())
using (var writer = new BinaryWriter(stream))
{
writer.Write((byte)2);
writer.Write((byte)127);
var deviceId = config.Configuration.Get("vehicles:" + vehiclePositionEvent.VehicleId + ":deviceId");
var deviceIdParts = deviceId.Split('-');
if (deviceIdParts.Length != 8)
throw new FormatException($"Invalid Device Id '{deviceId}'.");
// 3 2 Yes Unit identity Byte(8) Fixed identity of sending unit E.g. MAC-address or similar.
for (var i = 0; i < 8; i++)
{
writer.Write(Convert.ToByte(deviceIdParts[i], 16));
}
// 4 10 Yes Sequence number UInt16 0-65535 See 4.2.1.
if (sequenceNumber == ushort.MaxValue)
sequenceNumber = 1;
writer.Write(sequenceNumber++);
// 5 12 Yes Timestamp UInt32 Time of fix. Milliseconds since UTC midnight.
writer.Write((UInt32)DateTime.UtcNow.TimeOfDay.TotalMilliseconds);
// 6 16 Yes Latitude Single -90,00000° - +90,00000° IEEE 32-bits floating point number with single precision.
writer.Write((Single)vehiclePositionEvent.Latitude);
// 7 20 Yes Longitude Single -180,00000° - +180,00000°
writer.Write((Single)vehiclePositionEvent.Longitude);
// 8 24 Yes Speed UInt16 0,00 – 655.36 m/s Speed in steps of 0,01 m/s
writer.Write((UInt16)(vehiclePositionEvent.Speed * 100f));
// 9 26 Yes Direction UInt16 0,00 – 359.99° Direction in steps of 0.01°
writer.Write((UInt16)(vehiclePositionEvent.Direction * 100f));
// 10 28 Yes GPS-quality Byte Quality for GPS. See 4.2.6.
writer.Write((Byte)(0x01 | (0x02 << 4)));
// 11 29 Some Signals Byte 4 signals of 2 bits each See 4.2.7.
writer.Write((Byte)((0x03 << 6) | (0x00 << 4) | (0x00 << 2) | (0x03 << 0)));
// 12 30 No Distance UInt32 Vehicle distance in steps of 5 meters See 4.2.8
writer.Write((UInt32)0);
var vehicleId = Encoding.ASCII.GetBytes(vehiclePositionEvent.VehicleId);
// L13 34 Yes Length of field 13 Byte 0-255 Number of bytes.
writer.Write((Byte)vehicleId.Length);
// 13 Yes Vehicle id String Identity of vehicle. Must be a vehicle fixed unique value, e.g. BUS FMS VI field.
writer.Write(vehicleId);
// L14 No Length of field 14 Byte 0-255 Number of bytes.
writer.Write((Byte)0);
// 14 No Driver id String Identity of current driver. Optional. Could be BUS FMS DI, or unique id from other available source in vehicle.
//writer.Write();
var serviceJourneyId = Encoding.ASCII.GetBytes(VehicleAssignmentManager.Instance.GetJourneyId(vehiclePositionEvent.VehicleId) ?? string.Empty);
// L15 Yes Length of field 15 Byte 0-255 Number of bytes.
writer.Write((Byte)serviceJourneyId.Length);
// 15 Yes Service Journey Id String See 4.2.11.
writer.Write(serviceJourneyId);
// L16 No Length of field 16 Byte 0-255 Number of bytes.
writer.Write((Byte)0);
// 16 No Account Id String Identity of operator. Optional.
return stream.ToArray();
}
}
