private void ClientNEXT(LLCP_Link link, SNEP_ClientInstanceData instance)
{
if (SnepDataToSend == null)
{
return;
}
int length = SnepDataToSend.Length - instance.Offset;
if (length <= 0)
{
return;
}
if (length > instance.FragmentSize)
{
length = instance.FragmentSize;
}
byte[] buffer = new byte[length];
for (int i = 0; i < length; i++)
{
buffer[i] = SnepDataToSend[instance.Offset++];
}
if (instance.Offset >= SnepDataToSend.Length)
{
instance.MayContinue = false;
}
Trace.WriteLine("SNEP Client: sending (" + instance.Offset + "/" + SnepDataToSend.Length + "): " + (new CardBuffer(buffer)).AsString());
instance.SomethingSent = true;
link.Send_I(buffer);
}
private void ClientPUT(LLCP_Link link, SNEP_ClientInstanceData instance)
{
int length = 6 + SnepDataToSend.Length;
if (length > instance.FragmentSize)
{
instance.Offset = instance.FragmentSize - 6;
length = instance.FragmentSize;
}
else
{
instance.Offset = length - 6;
}
byte[] buffer = new byte[length];
buffer[0] = 0x10; /* SNEP version */
buffer[1] = SNEP.REQ_PUT;
buffer[4] = (byte)(SnepDataToSend.Length / 0x0100);
buffer[5] = (byte)(SnepDataToSend.Length % 0x0100);
for (int i = 0; i < instance.Offset; i++)
{
buffer[i + 6] = SnepDataToSend[i];
}
Trace.WriteLine("SNEP Client: sending (" + instance.Offset + "/" + SnepDataToSend.Length + "): " + (new CardBuffer(buffer)).AsString());
instance.SomethingSent = true;
link.Send_I(buffer);
}
public override void OnAcknowledge(LLCP_Link link)
{
SNEP_ClientInstanceData instance = (SNEP_ClientInstanceData)link.InstanceData;
if (instance.MayContinue)
{
Trace.WriteLine("SNEP Client: RR -> Next I");
ClientNEXT(link, instance);
}
else if (instance.SomethingSent)
{
Trace.WriteLine("SNEP Client: RR (thank you)");
instance.SomethingSent = false;
}
else
{
Trace.WriteLine("SNEP Client: RR unexpected");
if (MessageSentCallbackOnAcknowledge)
{
if ((OnMessageSent != null) && (!instance.MessageSentSent))
{
OnMessageSent();
instance.MessageSentSent = true;
}
}
}
}
public override void OnConnect(LLCP_Link link, byte[] payload)
{
Trace.WriteLine("SNEP Client: connected to server");
if (SnepDataToSend == null)
{
return;
}
SNEP_ClientInstanceData instance = new SNEP_ClientInstanceData();
link.InstanceData = instance;
instance.FragmentSize = link.MaxPayload;
ClientPUT(link, instance);
}
public override void OnInformation(LLCP_Link link, byte[] ServiceDataUnit)
{
SNEP_ClientInstanceData instance = (SNEP_ClientInstanceData)link.InstanceData;
Trace.WriteLine("SNEP Client: I...");
instance.SomethingSent = false;
if (ServiceDataUnit.Length < 2)
{
/* Frame is too short to have the RESPONSE header */
Trace.WriteLine("SNEP Client: I.Bad length");
goto close;
}
/* Get version */
byte version = ServiceDataUnit[0];
if ((version < 0x10) || (version >= 0x20))
{
/* Version not supported */
Trace.WriteLine("SNEP Client: I.Bad version");
goto close;
}
/* Response code */
byte response = ServiceDataUnit[1];
switch (response)
{
case SNEP.RSP_CONTINUE:
/* Message successfully transmited, let's continue */
instance.MayContinue = true;
Trace.WriteLine("SNEP Client: I.Continue -> send RR, then second I");
link.Send_RR();
ClientNEXT(link, instance);
break;
case SNEP.RSP_SUCCESS:
/* Message successfully transmited, let's disconnect */
Trace.WriteLine("SNEP Client: I.Success -> send RR");
/* Acknowledge */
link.Send_RR();
if ((OnMessageSent != null) && (!instance.MessageSentSent))
{
OnMessageSent();
instance.MessageSentSent = true;
}
break;
default:
/* An error has occured */
Trace.WriteLine("SNEP Client: I.Bad Opcode");
goto close;
}
/* */
return;
close:
Trace.WriteLine("SNEP Client: Force exit");
link.Send_Disc();
}
