/// <summary>
/// Serialize a work unit so it goes over the wire to a device.
/// The structure must be common to all devices and algorithm implementations but the header can really be
/// arbitrary payload as long as it's in the format the device expects.
/// Each algorithm implementation takes a different payload so this can't just consume a <see cref="RequestedWork"/>.
/// </summary>
/// <returns>Opaque blob to send back to device.</returns>
static internal byte[] YourWork(uint wid, IReadOnlyList <byte> payload)
{
var blob = new byte[1 + 4 + payload.Count];
var store = StoreOps.StoreKind(blob, OutgoingKind.WorkUnit);
store = StoreOps.StoreUint(store, wid);
store = StoreOps.StoreByteList(store, payload);
ThrowIfNotFullyConsumed(store);
return(blob);
}
/// <summary>
/// Construct the reply to <see cref="TurnOnArgs{A}"/>. In line of principle you could not-reply to
/// some devices as they could be mangled by somebody else but... for the time being it's just a matter
/// of giving back the server address to perform unicast packet transmissions.
/// </summary>
/// <param name="reachme">An unicast address the device who originally talked can contact me.</param>
/// <param name="identificator">Currently unused.</param>
/// <param name="deviceSpecific">Currently unused.</param>
/// <returns>
/// Blob to send over the wire. I won't touch it anymore. If I don't want to deal with this device
/// (maybe it belongs to another server) I will return null and you send nothing to it.
/// </returns>
static internal byte[]? Welcome(IPAddress reachme, byte[] identificator, byte[] deviceSpecific)
{
var addrBlob = reachme.GetAddressBytes();
var blob = new byte[1 + 1 + addrBlob.Length];
var store = StoreOps.StoreKind(blob, OutgoingKind.ServerAddress);
store = StoreOps.StoreByte(store, 0); // this is really a bitflag of features. For the time being it must be zero so no big deal
store = StoreOps.StoreByteArray(store, addrBlob);
ThrowIfNotFullyConsumed(store);
return(blob);
}