/// <summary>
/// Send HART-IP request
/// </summary>
/// <param name="Request"><see cref="HartIPRequest"/></param>
/// <returns><see cref="HartIPResponse"/></returns>
private HartIPResponse SendRequest(HartIPRequest Request)
{
HartIPResponse Rsp = null;
do
{
try
{
if (m_HartIPConn != null)
{
MsgResponse MsgRsp = new MsgResponse(Request.m_Timeout);
if (!m_HartIPConn.SendHartRequest(Request, MsgRsp))
{
m_Error = m_HartIPConn.LastError;
break;
}
// wait for the object return or timeout
if (MsgRsp.GetResponse())
{
Rsp = MsgRsp.ResponseMsg;
}
}
if (Rsp == null)
{
if ((m_HartIPConn != null) && (m_HartIPConn.LastError.Length > 0))
{
m_Error = m_HartIPConn.LastError;
}
else
{
m_Error = "Waiting Hart-IP Request waiting response timeout.";
}
Logger.Log(m_Error, false);
break;
}
}
catch (ThreadInterruptedException Ex)
{
m_Error = "Send Hart Request Exception: " + Ex.Message;
Logger.Log(m_Error, true);
}
catch (ThreadStateException TSEx)
{
m_Error = "Send Hart Request Exception: " + TSEx.Message;
Logger.Log(m_Error, true);
}
} while (false); /* ONCE */
return(Rsp);
}
/// <summary>
/// Send a Hart-IP Request
/// </summary>
/// <param name="Request"><see cref="HartIPRequest"></see></param>
/// <param name="MsgRsp"><see cref="MsgResponse"></see></param>
/// <para>see the HartIPRequest.Command for HART specification references.</para>
/// <returns>bool if it is success</returns>
public bool SendHartRequest(HartIPRequest Request, MsgResponse MsgRsp)
{
bool bSuccess = false;
if (Request == null)
{
throw new ArgumentException("Invalid argument in SendHartRequest.");
}
lock (SyncRoot)
{
m_Error = String.Empty;
try
{
if (m_RspMsgReader == null)
{
// Create a thread that is constantly reading on the input stream
m_bStopped = false;
m_RspMsgReader = new Thread(new ThreadStart(this.ReceiveMsg));
m_RspMsgReader.Name = "HartIPConnection";
m_RspMsgReader.Start();
}
// add the request object into the m_Requests list
MsgRequest MsgReq = new MsgRequest(Request.TransactionId, MsgRsp);
m_Requests.Add(MsgReq);
// send the request
bSuccess = SendRequest(Request);
LogMsg.Instance.Log(Request.ToString());
}
catch (SocketException se)
{
m_Error = String.Format("SendHartRequest SocketException: ErrorCode:{0}. {1}",
se.ErrorCode, se.Message);
LogMsg.Instance.Log("Error, " + m_Error, true);
}
catch (Exception e)
{
m_Error = String.Format("SendHartRequest Exception: {0}", e.Message);
LogMsg.Instance.Log("Error, " + m_Error, true);
}
if (!bSuccess)
{
LogMsg.Instance.Log("Error, Failed sending Request: " + Request.ToString(), true);
DequeueRequest(Request.TransactionId);
}
}
return(bSuccess);
}
/// <summary>
/// Create a HART Close Session Request, send it to the Gateway,
/// and close the socket.
/// </summary>
/// <param name="Result"><see cref="HARTMsgResult">HARTMsgResult</see></param>
public void CloseSession(HARTMsgResult Result)
{
HartIPRequest Req = null;
do
{
Req = HartIPRequest.CloseSession(TransactionId);
MsgResponse MsgRsp = new MsgResponse(HARTIPConnect.USE_SOCKET_TIMEOUT_DEFAULT);
if (SendHartRequest(Req, MsgRsp))
{
try
{ // wait for the object return or timeout
if (MsgRsp.GetResponse() == false)
{
Result.AddMessage("Close Session failed: No response was received.", false, true);
break;
}
if (!MsgRsp.ResponseMsg.IsValidResponse)
{
Result.AddMessage("Close Session failed: Received an invalid response msg type.", false, true);
break;
}
LogMsg.Instance.Log(MsgRsp.ResponseMsg.ToString());
}
catch
{
Result.AddMessage("Close Session failed.", false, true);
break;
}
}
else
{
Result.AddMessage("Close Session failed.", false, true);
break;
}
} while (false); /* ONCE */
Close();
Result.AddMessage("Closed the HPort socket.", false, true);
}
/// <summary>
/// Contructor
/// </summary>
/// <param name="ReqMsgId">ushort request's Transaction Id</param>
/// <param name="Response"><see cref="MsgResponse"/></param>
public MsgRequest(ushort ReqMsgId, MsgResponse Response)
{
this.ReqMsgId = ReqMsgId;
this.Response = Response;
}