private void Instance_OnDisconnect(IPOCS.Client client)
{
var clientModel = Clients.FirstOrDefault(c => c.Client == client);
Clients.Remove(clientModel);
Log.Insert(0, $"{DateTime.Now.ToUniversalTime()} : {client.Name} disconnected.");
}
private void Instance_OnConnect(IPOCS.Client client)
{
var concentrator = MainViewModel.YardEditorViewModel.Concentrators.FirstOrDefault((c) => c.Name == client.Name);
Clients.Add(new ClientViewModel(client, concentrator));
Log.Insert(0, $"{DateTime.Now.ToUniversalTime()} : {client.Name} connected.");
}
private bool?Instance_OnConnectionRequest(IPOCS.Client client, IPOCS.Protocol.Packets.ConnectionRequest request)
{
var concentrator = MainViewModel.YardEditorViewModel.Concentrators.FirstOrDefault((c) => c.Name == client.Name);
if (concentrator == null)
{
Log.Insert(0, $"{DateTime.Now.ToUniversalTime()} : Unable to locate {client.Name} - forcing disconnect.");
return(false);
}
List <byte> vector;
try
{
vector = concentrator.Serialize();
}
catch (NullReferenceException)
{
Log.Insert(0, $"{DateTime.Now.ToUniversalTime()} : Serialization for {client.Name} site data failed.");
return(false);
}
ushort providedChecksum = ushort.Parse(request.RXID_SITE_DATA_VERSION);
ushort computedChecksum = IPOCS.CRC16.Calculate(vector.ToArray());
Log.Insert(0, $"{DateTime.Now.ToUniversalTime()} : ({client.Name}) R.CRC: {request.RXID_SITE_DATA_VERSION}, C.CRC: {computedChecksum}");
if (providedChecksum == 0 || computedChecksum != providedChecksum)
{
var responseMsg = new IPOCS.Protocol.Message
{
RXID_OBJECT = client.Name
};
responseMsg.packets.Add(new IPOCS.Protocol.Packets.ApplicationData
{
RNID_XUSER = 0x0001,
PAYLOAD = vector.ToArray()
});
client.Send(responseMsg);
return(false);
}
return(true);
}
