Exemplo n.º 1
0
 private void ProcessSendQueue(ConnectionState state)
 {
     LogTrace("Entering ProcessSendQueue");
     while (true)
     {
         ISCSIPDU response;
         bool     stopped = !state.SendQueue.TryDequeue(out response);
         if (stopped)
         {
             return;
         }
         Socket clientSocket = state.ClientSocket;
         PDUHelper.SetStatSN(response, state.ConnectionParameters.StatSN);
         if (state.Session != null)
         {
             PDUHelper.SetExpCmdSN(response, state.Session.ExpCmdSN, state.Session.ExpCmdSN + state.Session.CommandQueueSize);
         }
         if (response is SCSIResponsePDU ||
             response is LoginResponsePDU ||
             response is TextResponsePDU ||
             (response is SCSIDataInPDU && ((SCSIDataInPDU)response).StatusPresent) ||
             response is RejectPDU)
         {
             state.ConnectionParameters.StatSN++;
         }
         try
         {
             clientSocket.Send(response.GetBytes());
             Log(Severity.Verbose, "[{0}] Sent response to initator, Operation: {1}, Size: {2}", state.ConnectionIdentifier, response.OpCode, response.Length);
             if (response is LogoutResponsePDU)
             {
                 clientSocket.Close(); // We can close the connection now
                 LogTrace("Leaving ProcessSendQueue");
                 return;
             }
             else if (response is LoginResponsePDU)
             {
                 if (((LoginResponsePDU)response).Status != LoginResponseStatusName.Success)
                 {
                     // Login Response: If the Status Class is not 0, the initiator and target MUST close the TCP connection.
                     clientSocket.Close(); // We can close the connection now
                     LogTrace("Leaving ProcessSendQueue");
                     return;
                 }
             }
         }
         catch (SocketException ex)
         {
             Log(Severity.Verbose, "[{0}] Failed to send response to initator. Operation: {1}, Size: {2}, SocketException: {3}", state.ConnectionIdentifier, response.OpCode, response.Length, ex.Message);
             LogTrace("Leaving ProcessSendQueue");
             return;
         }
         catch (ObjectDisposedException)
         {
             Log(Severity.Verbose, "[{0}] Failed to send response to initator. Operation: {1}, Size: {2}. ObjectDisposedException", state.ConnectionIdentifier, response.OpCode, response.Length);
             LogTrace("Leaving ProcessSendQueue");
             return;
         }
     }
 }
Exemplo n.º 2
0
        public static void TrySendPDU(StateObject state, ISCSIPDU response)
        {
            Socket clientSocket = state.ClientSocket;

            try
            {
                PDUHelper.SetStatSN(response, state.ConnectionParameters.StatSN);
                PDUHelper.SetExpCmdSN(response, state.SessionParameters.ExpCmdSN, state.SessionParameters.ExpCmdSN + state.SessionParameters.CommandQueueSize);
                if (response is SCSIResponsePDU || (response is SCSIDataInPDU && ((SCSIDataInPDU)response).StatusPresent))
                {
                    state.ConnectionParameters.StatSN++;
                }
                clientSocket.Send(response.GetBytes());
                Log(LogLevel.Debug, "[{0}][TrySendPDU] Sent response to initator, Operation: {1}, Size: {2}", state.ConnectionIdentifier, response.OpCode, response.Length);
            }
            catch (SocketException ex)
            {
                Log(LogLevel.Warning, "[{0}][TrySendPDU] Failed to send response to initator (Operation: {1}, Size: {2}), SocketException: {3}", state.ConnectionIdentifier, response.OpCode, response.Length, ex.Message);
            }
            catch (ObjectDisposedException)
            {
            }
        }