/// <summary>
/// Reads the status from the server.
/// </summary>
public OPCSERVERSTATUS?GetStatus()
{
string methodName = "IOPCServer.GetStatus";
try
{
IOPCServer server = BeginComCall <IOPCServer>(methodName, true);
IntPtr ppServerStatus;
server.GetStatus(out ppServerStatus);
OpcRcw.Da.OPCSERVERSTATUS pStatus = (OpcRcw.Da.OPCSERVERSTATUS)Marshal.PtrToStructure(ppServerStatus, typeof(OpcRcw.Da.OPCSERVERSTATUS));
Marshal.DestroyStructure(ppServerStatus, typeof(OpcRcw.Da.OPCSERVERSTATUS));
Marshal.FreeCoTaskMem(ppServerStatus);
return(pStatus);
}
catch (Exception e)
{
ComCallError(methodName, e);
return(null);
}
finally
{
EndComCall(methodName);
}
}
/// <summary>
/// Returns the current server status.
/// </summary>
/// <returns>The current server status.</returns>
public ServerStatus GetStatus()
{
ServerStatus output = null;
lock (this)
{
if (m_server == null)
{
throw new Exception("The remote server is not currently connected.");
}
// initialize arguments.
IntPtr pStatus = IntPtr.Zero;
// invoke COM method.
try
{
((IOPCServer)m_server).GetStatus(out pStatus);
}
catch (Exception e)
{
throw Interop.CreateException("IOPCServer.GetStatus", e);
}
if (pStatus != IntPtr.Zero)
{
OpcRcw.Da.OPCSERVERSTATUS status = (OpcRcw.Da.OPCSERVERSTATUS)Marshal.PtrToStructure(pStatus, typeof(OpcRcw.Da.OPCSERVERSTATUS));
output = new ServerStatus();
output.VendorInfo = status.szVendorInfo;
output.ProductVersion = String.Format("{0}.{1}.{2}", status.wMajorVersion, status.wMinorVersion, status.wBuildNumber);
output.ServerState = (serverState)status.dwServerState;
output.StatusInfo = null;
output.StartTime = Interop.GetFILETIME(OpcDa.Client.Com.Convert.GetFileTime(status.ftStartTime));
output.CurrentTime = Interop.GetFILETIME(OpcDa.Client.Com.Convert.GetFileTime(status.ftCurrentTime));
output.LastUpdateTime = Interop.GetFILETIME(OpcDa.Client.Com.Convert.GetFileTime(status.ftLastUpdateTime));
Marshal.DestroyStructure(pStatus, typeof(OpcRcw.Da.OPCSERVERSTATUS));
Marshal.FreeCoTaskMem(pStatus);
pStatus = IntPtr.Zero;
}
}
return(output);
}
///<summary>
/// IOPCServer::GetStatus - Gets a current status information about the Server.
///</summary>
public void GetStatus(out System.IntPtr ppServerStatus)
{
lock (m_lock)
{
// intialize default values.
OpcRcw.Da.OPCSERVERSTATUS status = new OPCSERVERSTATUS();
status.ftStartTime = ComUtils.GetFILETIME(m_startTime);
status.ftCurrentTime = ComUtils.GetFILETIME(DateTime.UtcNow);
status.ftLastUpdateTime = ComUtils.GetFILETIME(m_lastUpdateTime);
status.dwBandWidth = -1;
status.dwGroupCount = m_groups.Count;
status.wReserved = 0;
status.dwServerState = OPCSERVERSTATE.OPC_STATUS_FAILED;
status.wMajorVersion = 0;
status.wMinorVersion = 0;
status.wBuildNumber = 0;
status.szVendorInfo = null;
try
{
UpdateServerStatus(ref status);
}
catch (Exception e)
{
Utils.Trace(e, "Error reading server status.");
// return a status structure with a failed state.
}
// marshal parameters.
ppServerStatus = Marshal.AllocCoTaskMem(Marshal.SizeOf(typeof(OpcRcw.Da.OPCSERVERSTATUS)));
Marshal.StructureToPtr(status, ppServerStatus, false);
}
}
