public static Command CommandFromString(string CommandAsString)
{
Command cmd;
string [] sa;
string [] saParams;
sa = Command.DecodeCommand(System.Text.Encoding.ASCII.GetBytes(CommandAsString),CommandAsString.Length);
if (sa.Length > 1)
{
saParams = new string[sa.Length - 1];
Array.Copy(sa,1,saParams,0,sa.Length - 1);
cmd = new Command(sa[0],saParams);
}
else
{
cmd = new Command(sa[0],null);
}
return cmd;
}
public static bool IsValidCommand(Command cmd)
{
switch (cmd.VerbString)
{
case "LST":
return true;
case "UPL":
if (2 != cmd.Params.GetLength(0))
return false;
return true;
case "DNL":
if (1 != cmd.Params.GetLength(0))
return false;
return true;
case "ISR":
return true;
case "REC":
if (1 != cmd.Params.GetLength(0))
return false;
return true;
case "STP":
return true;
case "SET":
if (2 != cmd.Params.GetLength(0))
return false;
return true;
case "GET":
if (1 != cmd.Params.GetLength(0))
return false;
return true;
case "DEL":
if (1 != cmd.Params.GetLength(0))
return false;
return true;
case "PULSECHECK":
return true;
case "RBT":
if (1 != cmd.Params.GetLength(0))
return false;
return true;
default:
return false;
}
}
private bool SendYesNoTypeCommand(Command cmd, ref bool bYes, ref string sErrorReturn)
{
log.Context = System.Reflection.MethodBase.GetCurrentMethod().DeclaringType.FullName + "." + System.Reflection.MethodBase.GetCurrentMethod().Name;
if (m_conn == null)
{
return false;
}
if(!m_conn.Connected)
{
return false;
}
string serr = "";
m_sLastError = "";
Command retcmd = m_conn.SendCommandWaitForResponse(cmd);
if (retcmd == null)
{
serr = "Command failed. Return value null";
}
else
{
if (retcmd.VerbString == cmd.VerbString)
{
if (retcmd.Params.GetLength(0) > 0 && retcmd.Params[0] != "ERROR")
{
if (retcmd.Params[0] == "YES")
{
bYes = true;
}
else
{
bYes = false;
}
return true;
}
else
{
if (retcmd.Params.GetLength(0) > 1)
{
serr = retcmd.VerbString + " failed: " + retcmd.Params[1];
}
else
{
serr = retcmd.VerbString + " failed (no params)";
}
}
}
else
{
serr = "Unexpected command return: " + retcmd.VerbString;
}
}
if (null != sErrorReturn)
{
sErrorReturn = serr;
}
m_sLastError = serr;
log.WriteLog(serr);
return false;
}
private bool SendSetTypeCommand(Command cmd, ref string sErrorReturn)
{
log.Context = System.Reflection.MethodBase.GetCurrentMethod().DeclaringType.FullName + "." + System.Reflection.MethodBase.GetCurrentMethod().Name;
if (m_conn == null)
{
return false;
}
if(!m_conn.Connected)
{
return false;
}
string serr = "";
m_sLastError = "";
Command retcmd = m_conn.SendCommandWaitForResponse(cmd);
if (retcmd == null)
{
serr = "Command failed. Return value null";
}
else
{
if (retcmd.VerbString == cmd.VerbString)
{
if (retcmd.Params.GetLength(0) >= 2)
{
if (retcmd.Params[0] == cmd.Params[0])
{
// error
if (retcmd.Params[1] == "ERROR")
{
if (retcmd.Params.GetLength(0) == 3)
{
serr = retcmd.Params[2];
}
else
{
serr = "Invalid number of return ERROR params: " + retcmd.Params.GetLength(0);
}
}
else
{
if (retcmd.Params[1] == "OK")
{
return true;
}
else
{
serr = "Invalid response to SET command: " + retcmd.Params[1];
}
}
}
else
{
serr = "Unexpected SET command response KEY: " + retcmd.Params[0];
}
}
else
{
serr = "Invalid number of return params: " + retcmd.Params.GetLength(0);
}
}
else
{
serr = "Unexpected command return: " + retcmd.VerbString;
}
}
if (null != sErrorReturn)
{
sErrorReturn = serr;
}
m_sLastError = serr;
log.WriteLog(serr);
return false;
}
/// <summary>
/// Sends a Command object to the Oyster device and returns immediately.
/// The response to this command must be received by using the MessageReceivedHandler
/// for the particular type of message that was sent until an "End of Messages" indicator
/// is received.
/// </summary>
/// <param name="cmd">The Command request object that is sent to the device.</param>
/// <param name="sErrorReturn">A reference to a string that will either contain error
/// information if there is an error, or will be blank if there is no error. This parameter
/// may be null.</param>
/// <returns></returns>
private void SendEventResponseCommand(Command cmd)
{
log.Context = System.Reflection.MethodBase.GetCurrentMethod().DeclaringType.FullName + "." + System.Reflection.MethodBase.GetCurrentMethod().Name;
if (m_conn == null)
{
return;
}
if(!m_conn.Connected)
{
return;
}
m_sLastError = "";
m_conn.SendCommand(cmd);
}
internal void SendCommand(Command cmd)
{
string sLastErrorMessage = "";
try
{
cmd.Write(m_TCPClient.GetStream());
}
catch (IOException ioex)
{
if (null != ioex.InnerException)
{
if (ioex.InnerException is SocketException)
{
int iErrorCode = ((SocketException) ioex.InnerException).ErrorCode;
string sErrorMessage = ioex.InnerException.Message;
sLastErrorMessage = "SendCommand: Error Code = " + iErrorCode.ToString() + " Description = " + sErrorMessage;
}
else
{
sLastErrorMessage = "SendCommand: Unknown Error detected. Description = " + ioex.Message;
}
}
m_bDone = true;
m_bConnected = false;
}
catch (Exception ex)
{
sLastErrorMessage = "SendCommand: Unknown Error detected. Description = " + ex.Message;
m_bDone = true;
m_bConnected = false;
}
if (!m_bConnected)
{
log.WriteLog(sLastErrorMessage);
OnConnectionErrorReceived(this, sLastErrorMessage);
}
}
internal void ReceiveDataAndEnqueue()
{
log.Context = MethodBase.GetCurrentMethod().DeclaringType.FullName + "." + MethodBase.GetCurrentMethod().Name;
log.WriteLog("Received Data and Enqueue thread started");
string s;
int iCRat, iCRcount;
string[] sa;
int length = 0;
string sLastErrorMessage = "";
while (!m_bDone)
{
if (m_ConnectionErrorOccurred)
{
continue;
}
try
{
try
{
m_TCPClient.ReceiveTimeout = 100;
m_NetworkStream = m_TCPClient.GetStream();
// m_NetworkStream.Read(m_bytesIncomingBuffer,m_iBufferLength,m_iBufferMaxLength - m_iBufferLength);
IAsyncResult asr = m_NetworkStream.BeginRead(m_bytesIncomingBuffer, m_iBufferLength, m_iBufferMaxLength -
m_iBufferLength, null, null);
while (!asr.IsCompleted && !m_bDone)
{
Thread.Sleep(100);
}
if (m_bDone)
{
continue;
}
length = m_NetworkStream.EndRead(asr);
}
catch (IOException ioex)
{
if (null != ioex.InnerException)
{
if (ioex.InnerException is SocketException)
{
int iErrorCode = ((SocketException) ioex.InnerException).ErrorCode;
// if (iErrorCode == 10060)
// { // read timeout... just continue
// //TODO: This doesn't work in .NET 2.0!!! Must change implementation!
// continue;
// }
string sErrorMessage = ioex.InnerException.Message;
sLastErrorMessage = "ReceiveDataAndEnqueue: Error Code = " + iErrorCode.ToString() + " Description = " +
sErrorMessage;
}
else
{
sLastErrorMessage = "ReceiveDataAndEnqueue: Unknown Error detected. Description = " + ioex.Message;
}
}
log.WriteLog(sLastErrorMessage);
m_bDone = true;
m_bConnected = false;
}
catch (Exception ex)
{
sLastErrorMessage = "ReceiveDataAndEnqueue: Unknown Error detected. Description = " + ex.Message;
log.WriteLog(sLastErrorMessage);
m_bDone = true;
m_bConnected = false;
}
if (!m_bConnected)
{
OnConnectionErrorReceived(this, sLastErrorMessage);
continue;
}
if (m_bDone)
continue;
if (0 == length)
{
// connection must have been reset
m_bDone = true;
continue;
}
m_iBufferLength += length;
// find all the messages in the stream
iCRcount = 0;
for (int i = 0; i < m_iBufferLength; i++)
{
if (m_bytesIncomingBuffer[i] == 13)
iCRcount++;
} // for
// post all messages from the stream
for (int i = 0; i < iCRcount; i++)
{
s = Encoding.ASCII.GetString(m_bytesIncomingBuffer);
s = s.Substring(0, m_iBufferLength);
iCRat = s.IndexOf((char) 13);
if (-1 != iCRat)
{
int iLen;
s = s.Substring(0, iCRat);
iLen = s.Length + 1;
m_iBufferLength -= iLen;
//m_sLastResponse = s;
lock (m_qCommands.SyncRoot)
{
Command cmd;
string[] saParams;
sa = Command.DecodeCommand(Encoding.ASCII.GetBytes(s), s.Length);
if (sa.Length > 1)
{
saParams = new string[sa.Length - 1];
Array.Copy(sa, 1, saParams, 0, sa.Length - 1);
cmd = new Command(sa[0], saParams);
}
else
{
cmd = new Command(sa[0], null);
}
m_qCommands.Enqueue(cmd);
log.WriteLog("Command Enqueued: " + cmd.VerbString);
}
byte[] bytes = new byte[m_iBufferLength];
Array.Copy(m_bytesIncomingBuffer, 0, bytes, 0, m_iBufferLength);
OnMessageReceived(new CommandEventArgs(bytes, ref m_qCommands));
Array.Copy(m_bytesIncomingBuffer, iLen, m_bytesIncomingBuffer, 0, m_iBufferLength);
Array.Clear(m_bytesIncomingBuffer, m_iBufferLength, m_iBufferMaxLength - m_iBufferLength);
} // if
} // for
}
catch (Exception ex)
{
log.WriteLog("Unknown Error detected. Description = " + ex.Message);
}
} // while
m_EventThreadComplete[0].Set();
}
