private T ParseResponse <T>(ProtocolDataUnit pdu)
where T : BaseResponse, new()
{
BaseResponse resp;
switch (pdu.OpCode)
{
case OpCode.LoginResponse:
resp = new LoginResponse();
break;
case OpCode.LogoutResponse:
resp = new LogoutResponse();
break;
case OpCode.ReadyToTransfer:
resp = new ReadyToTransferPacket();
break;
case OpCode.Reject:
resp = new RejectPacket();
break;
case OpCode.ScsiDataIn:
resp = new DataInPacket();
break;
case OpCode.ScsiResponse:
resp = new Response();
break;
case OpCode.TextResponse:
resp = new TextResponse();
break;
default:
throw new InvalidProtocolException("Unrecognized response opcode: " + pdu.OpCode);
}
resp.Parse(pdu);
if (resp.StatusPresent)
{
SeenStatusSequenceNumber(resp.StatusSequenceNumber);
}
T result = resp as T;
if (result == null)
{
throw new InvalidProtocolException("Unexpected response, expected " + typeof(T) + ", got " + result.GetType());
}
return(result);
}
public void Close(LogoutReason reason)
{
LogoutRequest req = new LogoutRequest(this);
byte[] packet = req.GetBytes(reason);
_stream.Write(packet, 0, packet.Length);
_stream.Flush();
ProtocolDataUnit pdu = ReadPdu();
LogoutResponse resp = ParseResponse <LogoutResponse>(pdu);
if (resp.Response != LogoutResponseCode.ClosedSuccessfully)
{
throw new InvalidProtocolException("Target indicated failure during logout: " + resp.Response);
}
_stream.Dispose();
}