public void DeleteAllSessionIdsNotInList(WTSUniqueSessionIdList _valid_session_ids)
{
WTSUniqueSessionIdList kill_list = new WTSUniqueSessionIdList();
foreach (WTSSession s in this)
{
bool kill = true;
for (int i = 0; i < _valid_session_ids.Count; i++)
{
if (s.UniqueSessionId == _valid_session_ids[i])
{
kill = false;
break;
}
}
if (kill)
{
kill_list.Add(s.UniqueSessionId);
}
}
if (kill_list.Count > 0)
{
this.RemoveSessions(kill_list);
}
}
private void RefreshThread_DoWork(object sender, DoWorkEventArgs e)
{
WTSUniqueSessionIdList valid_session_ids = new WTSUniqueSessionIdList();
foreach (string server in this.WTSServerHostnames)
{
IntPtr hServer = IntPtr.Zero;
try
{
IntPtr SessionInfoPtr = IntPtr.Zero;
Int32 sessionCount = 0;
Int32 dataSize = Marshal.SizeOf(typeof(Jrfc.NativeMethods.WTS_SESSION_INFO));
hServer = Jrfc.NativeMethods.WTSOpenServer(server);
Int32 retVal = Jrfc.NativeMethods.WTSEnumerateSessions(hServer, 0, 1, ref SessionInfoPtr, ref sessionCount);
if (retVal != 0)
{
Int32 currentSession = (int)SessionInfoPtr;
for (int i = 0; i < sessionCount; i++)
{
Jrfc.NativeMethods.WTS_SESSION_INFO si = (Jrfc.NativeMethods.WTS_SESSION_INFO)Marshal.PtrToStructure((System.IntPtr)currentSession, typeof(Jrfc.NativeMethods.WTS_SESSION_INFO));
currentSession += dataSize;
Jrfc.Wts.WTSSession session = new Jrfc.Wts.WTSSession(hServer, server, si);
bool filter = false;
if (session.State == NativeMethods.WTS_CONNECTSTATE_CLASS.WTSListen)
{
filter = true;
}
else if (session.State == NativeMethods.WTS_CONNECTSTATE_CLASS.WTSDisconnected && string.IsNullOrWhiteSpace(session.Username))
{
filter = true;
}
if (!filter)
{
this.AddOrUpdate(session);
valid_session_ids.Add(new WTSUniqueSessionId(server, session.SessionId)); // keep a list of existing sessions
}
}
Jrfc.NativeMethods.WTSFreeMemory(SessionInfoPtr);
}
}
catch (System.Exception x)
{ Jrfc.Exception.HandleException(x); }
finally
{ if (hServer != IntPtr.Zero)
{
Jrfc.NativeMethods.WTSCloseServer(hServer);
}
}
}
DeleteAllSessionIdsNotInList(valid_session_ids); // delete (old) sessions that are in the currect session list,
// but were not in the existing sessions just retreived from the
// RDS server. Presumably any session not in the valid_session_ids
// list no longer exists.
this.m_RefreshThread.ReportProgress(100);
}