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root/i-scream/projects/cms/source/host/winhost/nettest.frm

Comparing projects/cms/source/host/winhost/nettest.frm (file contents):
Revision 1.7 by pjm2, Fri Feb 23 10:58:00 2001 UTC vs.
Revision 1.39 by pjm2, Thu Mar 22 09:27:04 2001 UTC

#	Line 1 | Line 1
1		VERSION 5.00
2		Object = "{248DD890-BB45-11CF-9ABC-0080C7E7B78D}#1.0#0"; "MSWINSCK.OCX"
3	+	Object = "{33155A3D-0CE0-11D1-A6B4-444553540000}#1.0#0"; "SysTray.ocx"
4		Begin VB.Form Form1
5		BorderStyle     =   3  'Fixed Dialog
6	<	Caption         =   "TCP/UDP Test program"
7	<	ClientHeight    =   5655
6	>	Caption         =   "i-scream Winhost"
7	>	ClientHeight    =   1380
8		ClientLeft      =   45
9		ClientTop       =   330
10	<	ClientWidth     =   5670
10	>	ClientWidth     =   4635
11	>	Icon            =   "nettest.frx":0000
12		LinkTopic       =   "Form1"
13		MaxButton       =   0   'False
14		MinButton       =   0   'False
15	<	ScaleHeight     =   5655
16	<	ScaleWidth      =   5670
15	>	ScaleHeight     =   1380
16	>	ScaleWidth      =   4635
17		ShowInTaskbar   =   0   'False
18	<	StartUpPosition =   3  'Windows Default
19	<	Begin VB.Timer TCPTimer
20	<	Left            =   3360
21	<	Top             =   120
18	>	StartUpPosition =   2  'CenterScreen
19	>	Visible         =   0   'False
20	>	Begin VB.CommandButton Command1
21	>	Caption         =   "more"
22	>	Height          =   255
23	>	Left            =   3885
24	>	TabIndex        =   8
25	>	Top             =   1035
26	>	Width           =   615
27		End
28	<	Begin VB.Timer UDPTimer
29	<	Left            =   3840
30	<	Top             =   120
31	<	End
25	<	Begin VB.CommandButton Command3
26	<	Caption         =   "TCP to Filter"
27	<	Height          =   375
28	<	Left            =   3720
29	<	TabIndex        =   3
30	<	Top             =   2520
31	<	Width           =   1575
32	<	End
33	<	Begin VB.TextBox Text4
34	<	Height          =   1575
35	<	Left            =   240
28	>	Begin VB.TextBox Text1
29	>	Height          =   2055
30	>	Left            =   120
31	>	Locked          =   -1  'True
32		MultiLine       =   -1  'True
33		ScrollBars      =   2  'Vertical
34	<	TabIndex        =   2
35	<	Text            =   "nettest.frx":0000
36	<	Top             =   3000
41	<	Width           =   5055
34	>	TabIndex        =   7
35	>	Top             =   1440
36	>	Width           =   4395
37		End
38	<	Begin VB.CommandButton Command2
39	<	Caption         =   "TCP to FilterManager"
38	>	Begin VB.CommandButton Hide
39	>	Caption         =   "hide"
40	>	Height          =   255
41	>	Left            =   3225
42	>	TabIndex        =   6
43	>	Top             =   1035
44	>	Width           =   615
45	>	End
46	>	Begin SysTray.SystemTray SystemTray
47	>	Left            =   2520
48	>	Top             =   4200
49	>	_ExtentX        =   847
50	>	_ExtentY        =   847
51	>	SysTrayText     =   "i-scream Winhost"
52	>	IconFile        =   0
53	>	End
54	>	Begin VB.Timer Timer1
55	>	Left            =   3120
56	>	Top             =   4200
57	>	End
58	>	Begin VB.CommandButton Reconfigure
59	>	Caption         =   "Reconfigure with FilterManager"
60		Height          =   375
61	<	Left            =   3360
62	<	TabIndex        =   1
63	<	Top             =   2040
64	<	Width           =   1935
61	>	Left            =   840
62	>	TabIndex        =   0
63	>	Top             =   3555
64	>	Width           =   2895
65		End
66		Begin MSWinsockLib.Winsock TCPSock
67	<	Left            =   4920
68	<	Top             =   120
67	>	Left            =   4080
68	>	Top             =   4200
69		_ExtentX        =   741
70		_ExtentY        =   741
71		_Version        =   393216
72		End
58	–	Begin VB.CommandButton Command1
59	–	Caption         =   "Send UDP"
60	–	Height          =   375
61	–	Left            =   4320
62	–	TabIndex        =   0
63	–	Top             =   1560
64	–	Width           =   975
65	–	End
73		Begin MSWinsockLib.Winsock UDPSock
74	<	Left            =   4320
75	<	Top             =   120
74	>	Left            =   3600
75	>	Top             =   4200
76		_ExtentX        =   741
77		_ExtentY        =   741
78		_Version        =   393216
79		Protocol        =   1
80		End
81	+	Begin VB.Image Image1
82	+	Height          =   900
83	+	Left            =   2400
84	+	Picture         =   "nettest.frx":08CA
85	+	Top             =   90
86	+	Width           =   2100
87	+	End
88		Begin VB.Label Label2
89	<	Caption         =   "Label2"
89	>	Alignment       =   1  'Right Justify
90	>	Caption         =   "Next heartbeat:"
91		Height          =   255
92		Left            =   120
93	<	TabIndex        =   6
94	<	Top             =   600
95	<	Width           =   3375
93	>	TabIndex        =   5
94	>	Top             =   645
95	>	Width           =   1455
96		End
97		Begin VB.Label Label1
98	<	Caption         =   "Label1"
98	>	Alignment       =   1  'Right Justify
99	>	Caption         =   "Next UDP packet:"
100		Height          =   255
101		Left            =   120
102	<	TabIndex        =   5
103	<	Top             =   240
104	<	Width           =   3375
102	>	TabIndex        =   4
103	>	Top             =   165
104	>	Width           =   1455
105		End
106	+	Begin VB.Label Label4
107	+	BorderStyle     =   1  'Fixed Single
108	+	Caption         =   "0"
109	+	Height          =   255
110	+	Left            =   1680
111	+	TabIndex        =   3
112	+	Top             =   645
113	+	Width           =   615
114	+	End
115	+	Begin VB.Label Label3
116	+	BorderStyle     =   1  'Fixed Single
117	+	Caption         =   "0"
118	+	Height          =   255
119	+	Left            =   1680
120	+	TabIndex        =   2
121	+	Top             =   165
122	+	Width           =   615
123	+	End
124		Begin VB.Label Status
125	+	Alignment       =   2  'Center
126		Caption         =   "Status:"
127		Height          =   255
128	<	Left            =   120
129	<	TabIndex        =   4
130	<	Top             =   5280
131	<	Width           =   5415
128	>	Left            =   0
129	>	TabIndex        =   1
130	>	Top             =   1035
131	>	Width           =   3180
132		End
133		End
134		Attribute VB_Name = "Form1"
#	Line 101 | Line 136 | Attribute VB_GlobalNameSpace = False
136		Attribute VB_Creatable = False
137		Attribute VB_PredeclaredId = True
138		Attribute VB_Exposed = False
139	+	' For the system tray methods
140		Private Declare Function GetPrivateProfileString Lib "kernel32" Alias "GetPrivateProfileStringA" (ByVal lpApplicationName As String, ByVal lpKeyName As String, ByVal lpDefault As String, ByVal lpReturnedString As String, ByVal nSize As Long, ByVal lpFileName As String) As Long
141		Private Declare Function GetPrivateProfileInt Lib "kernel32" Alias "GetPrivateProfileIntA" (ByVal lpApplicationName As String, ByVal lpKeyName As String, ByVal nDefault As Long, ByVal lpFileName As String) As Long
142
143	+	' Address of the filter manager
144		Dim filterManagerHostname As String
145	<	Dim filterManagerTCPPort As Integer
145	>	Dim filterManagerTCPPort As Long
146
147	+	' Sequence number and machine name are sent in each UDP packet.
148	+	Dim seqNo As Long
149	+	Dim machineName As String
150	+
151	+	' DEPRICATED.  The number of seconds that the program has been running.
152	+	Dim secondsRunning As Long
153	+
154	+	' Address of the filter to use.
155		Dim filterHostname As String
156		Dim filterTCPPort As Integer
157		Dim filterUDPPort As Integer
158	+
159	+	' Server configuration details.
160		Dim fileList As String
161		Dim lastModified As String
162
163	+	' Time intervals between UDP packets and heartbeats.
164		Dim UDPUpdateTime As Integer
165		Dim TCPUpdateTime As Integer
166
167	+	' The protocol version used by the winhost.
168		Dim protocolVersion As String
169	+
170	+	' Action flags.
171		Dim connected As Boolean
172	<	Dim responseNumber As Integer
172	>	Dim heartBeating As Boolean
173	>	Dim windowBig As Boolean
174
175	+	' Define classes to be used to obtain uptime and number of users.
176	+	Dim CUpTime As New CUpTime
177	+	Dim wksta As New CNetWksta
178
179	<	Private Sub Command1_Click()
179	>	' Keep track of the line number in TCP communications.
180	>	Dim responseNumber As Integer
181
126	–	' build the contents of the XML packet.
127	–	xml = "<packet></packet>"
182
183	<	' Use the first winsock control to send a UDP packet.
184	<	UDPSock.RemoteHost = filterHostname
185	<	UDPSock.RemotePort = filterUDPPort
186	<	UDPSock.SendData xml
187	<	Status.Caption = "i-scream Winhost " & protocolVersion & " - UDP packet sent."
188	<
183	>	' Toggle visibility of the debug output.
184	>	Private Sub Command1_Click()
185	>	If windowBig Then
186	>	Form1.Height = 1755
187	>	windowBig = False
188	>	Else
189	>	Form1.Height = 4380
190	>	windowBig = True
191	>	End If
192		End Sub
193
137	–	Private Sub Command2_Click()
138	–
139	–	' establish a TCP connection to a filtermanager
140	–	TCPSock.Close
141	–	TCPSock.Connect filterManagerHostname, filterManagerTCPPort
194
195	<	End Sub
144	<
145	<	Private Sub Command3_Click()
146	<	' establish a TCP connection to a filter
147	<	TCPSock.Close
148	<	TCPSock.Connect filterHostname, filterTCPPort
149	<	End Sub
150	<
195	>	' Main method (or its Visual Basic equivalent!).
196		Private Sub Form_Load()
197	+
198	+	' Do not let any user run the program twice on one machine.
199	+	If App.PrevInstance Then
200	+	x = MsgBox("There is already an i-scream Winhost running on this machine.", 48, "i-scream host already running")
201	+	End
202	+	End If
203	+
204		protocolVersion = "1.1"
205
206	<	Status.Caption = "i-scream Winhost " & protocolVersion
206	>	Status.Caption = "Loading"
207	>	Form1.Caption = "i-scream Winhost " & protocolVersion
208
209	<	''''TEMP
157	<	filterManagerHostname = "killigrew.ukc.ac.uk"
158	<	filterManagerTCPPort = 4567
159	<	Exit Sub
160	<	''' ENDTEMP
209	>	CUpTime.Init
210
211	+	' Some class functions only work on NT-based systems, and Win9x boxes
212	+	' are rarely used as servers, anyway.
213	+	If CUpTime.isWin9x Then
214	+	x = MsgBox("Sorry, the i-scream host can only be used to monitor servers (i.e. not Win9x)", 48, "Not a server")
215	+	End
216	+	End If
217	+
218	+	' Start the program with the small window size.
219	+	windowBig = False
220	+
221	+	' Catch errors while reading the configuration from the ini file.
222		On Error GoTo iniError
223	+
224		Dim buf As String * 256
225		Dim length As Long
226	<	length = GetPrivateProfileString("i-scream Winhost", "FilterManager", "<no value>", buf, Len(buf), App.Path & "winhost.ini")
226	>	length = GetPrivateProfileString("i-scream Winhost", "FilterManager", "", buf, Len(buf), App.Path & "/winhost.ini")
227		filterManagerHostname = Left$(buf, length)
228	<	length = GetPrivateProfileString("i-scream Winhost", "FilterManagerPort", "<no value>", buf, Len(buf), App.Path & "winhost.ini")
229	<	filterManagerTCPPort = Left$(buf, length)
228	>	length = GetPrivateProfileInt("i-scream Winhost", "FilterManagerPort", 0, App.Path & "/winhost.ini")
229	>	filterManagerTCPPort = length
230
231	<	Status.Caption = "i-scream Winhost " & protocolVersion & " connecting to Filter Manager"
231	>	If filterManagerHostname = "" Then
232	>	GoTo iniError
233	>	End If
234
235	+	' Resume normal error handling.
236	+	On Error GoTo 0
237	+
238	+	' We have the configuration.  Now connect.
239	+	Status.Caption = "Connecting to Filter Manager " & filterManagerHostname & ":" & filterManagerTCPPort
240	+	Reconfigure_Click
241	+
242	+	' Install the icon in the system tray.
243	+	SystemTray.Icon = Val(Form1.Icon)
244	+	SystemTray.Action = 0
245	+
246	+
247		Exit Sub
248
249	+	' Error handler
250		iniError:
251	<	x = MsgBox("The i-scream Winhost could not read the correct settings from the winhost.ini file.  Please correct these and try again.", 48, "Configuration not found")
251	>	x = MsgBox("The i-scream Winhost could not read the correct settings from the winhost.ini file.  Please correct these and try again.  " & Err.Description, 48, "Configuration not found")
252		End
253
254		End Sub
255
256	+
257	+	' Unload event.  Also fires when the machine is shutting down.
258	+	Private Sub Form_QueryUnload(Cancel As Integer, UnloadMode As Integer)
259	+
260	+	' Prevent users from unwittingly shutting down thet winhost.
261	+	x = MsgBox("Are you sure you want to shut down the Winhost?  This will stop your computer sending information to the i-scream Central Monitoring System.", vbYesNo, "i-scream Winhost")
262	+	If x = 7 Then
263	+	Cancel = True
264	+	Else
265	+	' Remove the icon from the system tray.
266	+	SystemTray.Action = 2
267	+	End If
268	+
269	+	End Sub
270	+
271	+
272	+	' Make the form disappear and update the icon in the system tray.
273	+	Private Sub Hide_Click()
274	+	Form1.Visible = False
275	+	SystemTray.Icon = Val(Form1.Icon)
276	+	End Sub
277	+
278	+
279	+	' Reconfigure the host with the filter manager.
280	+	Private Sub Reconfigure_Click()
281	+	' establish a TCP connection to a filtermanager, provided another TCP
282	+	' communication is not already taking place.
283	+	If Not heartBeating Then
284	+	connected = False
285	+	TCPSock.Close
286	+	TCPSock.Connect filterManagerHostname, filterManagerTCPPort
287	+	Else
288	+	Status.Caption = "Cannot reconfigure while heartbeating"
289	+	End If
290	+	End Sub
291	+
292	+
293	+	' Do this when the user double-clicks on the system tray icon.
294	+	Private Sub SystemTray_MouseDblClk(ByVal Button As Integer)
295	+	' After double-clicking on the system tray icon, we make the
296	+	' form visible and give it active focus.
297	+	Form1.Visible = True
298	+	Form1.SetFocus
299	+
300	+	End Sub
301	+
302	+
303	+	' Establish a connection with the filter manager.
304	+	' Thereafter, use the filter instead.
305		Private Sub TCPSock_Connect()
306
307	+	' Start from the first line of the response.
308		responseNumber = 0
309	<
309	>
310		' Send something as soon as we connect to the server.
311		If connected = False Then
312		' contact the FilterManager
#	Line 192 | Line 318 | Private Sub TCPSock_Connect()
318
319		End Sub
320
321	+
322	+	' Deal with TCP traffic coming from the filter or filter manager.
323		Private Sub TCPSock_DataArrival(ByVal bytesTotal As Long)
324
325	+	' Move to the next line of the response.
326		responseNumber = responseNumber + 1
327
328		' Get the line from the server.
#	Line 202 | Line 331 | Private Sub TCPSock_DataArrival(ByVal bytesTotal As Lo
331		' Remove linefeeds and returns from the line.
332		response = Replace(response, Chr(13), "")
333		response = Replace(response, Chr(10), "")
205	–	Text4.Text = Text4.Text & vbCrLf & response
334
335		If connected = False Then
336		' Perform TCP configuration (1.1)
#	Line 211 | Line 339 | Private Sub TCPSock_DataArrival(ByVal bytesTotal As Lo
339		Case 1:
340		If Not response = "OK" Then GoTo configError
341		TCPSock.SendData "LASTMODIFIED" & vbCrLf
342	+	Text1.Text = "Requesting configuration from FilterManager:- " & vbCrLf
343	+	Text1.Text = Text1.Text & response & vbCrLf
344		Case 2:
345		If response = "ERROR" Then GoTo configError
346		lastModified = response
347	+	Text1.Text = Text1.Text & response & vbCrLf
348		TCPSock.SendData "FILELIST" & vbCrLf
349		Case 3:
350		If response = "ERROR" Then GoTo configError
351		fileList = response
352	<	TCPSock.SendData "UDPUpdateTime" & vbCrLf
352	>	Text1.Text = Text1.Text & response & vbCrLf
353	>	TCPSock.SendData "FQDN" & vbCrLf
354		Case 4:
355		If response = "ERROR" Then GoTo configError
356	+	Text1.Text = Text1.Text & response & vbCrLf
357	+	machineName = response
358	+	TCPSock.SendData "UDPUpdateTime" & vbCrLf
359	+	Case 5:
360	+	If response = "ERROR" Then GoTo configError
361		UDPUpdateTime = response
362	+	Text1.Text = Text1.Text & response & vbCrLf
363		TCPSock.SendData "TCPUpdateTime" & vbCrLf
364	<	Case 5:
364	>	Case 6:
365		If response = "ERROR" Then GoTo configError
366		TCPUpdateTime = response
367	+	Text1.Text = Text1.Text & response & vbCrLf
368		TCPSock.SendData "ENDCONFIG" & vbCrLf
369	<	Case 6:
369	>	Case 7:
370		If Not response = "OK" Then GoTo configError
371	+	Text1.Text = Text1.Text & response & vbCrLf
372		TCPSock.SendData "FILTER" & vbCrLf
373	<	Case 7:
374	<	'we got a filter list here.
373	>	Case 8:
374	>	Text1.Text = Text1.Text & response & vbCrLf
375	>	' We got a filter list here.
376		readTo = 0
377	<	' get hostname
377	>	' Get hostname
378		readTo = InStr(1, response, ";", vbBinaryCompare)
379		filterHostname = Mid(response, 1, readTo - 1)
380		response = Mid(response, readTo + 1, Len(response))
381	<	' get UDP Port number
381	>	' Get UDP Port number
382		readTo = InStr(1, response, ";")
383		filterUDPPort = Mid(response, 1, readTo - 1)
384		response = Mid(response, readTo + 1, Len(response))
385	<	' get TCP Port number
385	>	' Get TCP Port number
386		filterTCPPort = response
387		TCPSock.SendData "END" & vbCrLf
388	<	Case 8:
388	>	Case 9:
389		If Not response = "OK" Then GoTo configError
390		connected = True
391		responseNumber = 0
392	+	' We've finished with the socket now.
393		TCPSock.Close
394	<	Text4.Text = Text4.Text & vbCrLf & "  <closed>"
395	<	Label1.Caption = "TCP hearbeat interval: " & UDPUpdateTime
396	<	Label2.Caption = "UDP packet interval: " & TCPUpdateTime
397	<	Status.Caption = "i-scream Winhost " & protocolVersion & " - got config okay"
394	>	Text1.Text = Text1.Text & response & vbCrLf
395	>	Status.Caption = "Configuration successful"
396	>	Label3.Caption = UDPUpdateTime
397	>	Label4.Caption = TCPUpdateTime
398	>	Timer1.Interval = 1000
399		End Select
400		Else
401		' Perform a heartbeat (1.1)
402	+	heartBeating = True
403		On Error GoTo heartbeatError
404		Select Case responseNumber
405		Case 1:
406		If Not response = "OK" Then GoTo heartbeatError
407	+	Text1.Text = "Performing heartbeat: -" & vbCrLf
408	+	Text1.Text = Text1.Text & response & vbCrLf
409		TCPSock.SendData "CONFIG" & vbCrLf
410		Case 2:
411		If Not response = "OK" Then GoTo heartbeatError
412	+	Text1.Text = Text1.Text & response & vbCrLf
413		TCPSock.SendData fileList & vbCrLf
414		Case 3:
415		If Not response = "OK" Then GoTo heartbeatError
416	+	Text1.Text = Text1.Text & response & vbCrLf
417		TCPSock.SendData lastModified & vbCrLf
418		Case 4:
419	<	If Not response = "OK" Then GoTo heartbeatError
419	>	' Reconfigure if the server configuration for the
420	>	' host has been altered.
421	>	If Not response = "OK" Then
422	>	heartBeating = False
423	>	Reconfigure_Click
424	>	End If
425	>	Text1.Text = Text1.Text & response & vbCrLf
426		TCPSock.SendData "ENDHEARTBEAT" & vbCrLf
427		Case 5:
428		If Not response = "OK" Then GoTo heartbeatError
429	+	Text1.Text = Text1.Text & response & vbCrLf
430		TCPSock.Close
431	<	Status.Caption = "i-scream Winhost " & protocolVersion & " - heartbeat sent okay."
431	>	Status.Caption = "Heartbeat sent successfully."
432	>	heartBeating = False
433		End Select
434
435		End If
#	Line 282 | Line 438 | Private Sub TCPSock_DataArrival(ByVal bytesTotal As Lo
438		Exit Sub
439
440		configError:
441	<	Status.Caption = "i-scream Winhost " & protocolVersion & " - FAILED to get configuration"
441	>	heartBeating = False
442	>	Status.Caption = "FAILED to get configuration from the server"
443	>	Exit Sub
444		heartbeatError:
445	<	Status.Caption = "i-scream Winhost " & protocolVersion & " - Heatbeat FAILED"
445	>	heartBeating = False
446	>	Status.Caption = "Heatbeat FAILED"
447	>	Exit Sub
448		End Sub
449
450	+
451	+	' Deal with the construction and sending of UDP packets.
452	+	Private Sub Timer1_Timer()
453	+
454	+	Label3.Caption = Label3.Caption - 1
455	+	Label4.Caption = Label4.Caption - 1
456	+
457	+	Status.Caption = ""
458	+
459	+	If Label3.Caption < 1 Then
460	+
461	+	' prepare the contents of the XML packet.
462	+	seqNo = seqNo + 1
463	+
464	+	' Windows machines can provide their NetBIOS name to assist
465	+	' in identifying the machine.
466	+	netbiosName = TCPSock.LocalHostName
467	+
468	+	' The I.P. address of the host machine.
469	+	LocalIP = TCPSock.LocalIP
470	+
471	+	' The date according to the host machine (formatted as the
472	+	' number of seconds since the epoch).
473	+	packetDate = Date2Num()
474	+
475	+	' Attempt to return Windows version information with the API.
476	+	Dim verinfo As OSVERSIONINFO
477	+	verinfo.dwOSVersionInfoSize = Len(verinfo)
478	+	ret% = GetVersionEx(verinfo)
479	+	If ret% = 0 Then
480	+	Text1.Text = Text1.Text & vbCrLf & "Error getting Windows version Information"
481	+	End
482	+	End If
483	+
484	+	' Now get all of the version information.
485	+	osName = GetVersion()
486	+	osVersionMajor = verinfo.dwMajorVersion
487	+	osVersionMinor = verinfo.dwMinorVersion
488	+	osBuild = verinfo.dwBuildNumber
489	+
490	+	' Find out what type of processor the host is using.
491	+	Dim sysinfo As SYSTEM_INFO
492	+	GetSystemInfo sysinfo
493	+	Select Case sysinfo.dwProcessorType
494	+	Case PROCESSOR_INTEL_386
495	+	processorType = "Intel 386"
496	+	Case PROCESSOR_INTEL_486
497	+	processorType = "Intel 486"
498	+	Case PROCESSOR_INTEL_PENTIUM
499	+	processorType = "Intel Pentium variant"
500	+	Case PROCESSOR_MIPS_R4000
501	+	processorType = "MIPS R4000"
502	+	Case PROCESSOR_ALPHA_21064
503	+	processorType = "DEC Alpha 21064"
504	+	Case Else
505	+	processorType = "(unknown)"
506	+	End Select
507	+
508	+	' Find the amount of swap memory and physical memory
509	+	' (both free and total)
510	+	Dim memsts As MEMORYSTATUS
511	+	Dim memory&
512	+	GlobalMemoryStatus memsts
513	+	memory& = memsts.dwTotalPhys
514	+	memTotal = memory& \ 1048576
515	+	memory& = memsts.dwAvailPhys
516	+	memFree = memory& \ 1048576
517	+	memory& = memsts.dwTotalVirtual
518	+	swapTotal = memory& \ 1048576
519	+	memory& = memsts.dwAvailVirtual
520	+	swapFree = memory& \ 1048576
521	+
522	+	' Cause the CUpTime class to capture its data.
523	+	CUpTime.Capture
524	+
525	+	' Get the processor occupancy percentages.
526	+	cpu_time = CUpTime.CPUTime
527	+	percent_idle = CUpTime.PercentIdle
528	+
529	+	' Get the uptime for the host.  DO NOT use integer division here,
530	+	' as this will cause the result to overflow if the machine has
531	+	' been up for more than ~47 days.
532	+	uptime = CUpTime.MilliSecs / 1000#
533	+
534	+	' Use the CNetWksta class to find out how many users are logged
535	+	' on to the system.
536	+	userCount = wksta.LoggedOnUsers
537	+
538	+	' build the contents of the XML packet
539	+	xml = "<packet seq_no=""" & seqNo & """ machine_name=""" & machineName & """ date=""" & packetDate & """ type=""data"" ip=""" & LocalIP & """>" & _
540	+	"<os>" & _
541	+	"<netbios_name>" & netbiosName & "</netbios_name>" & _
542	+	"<name>" & osName & "</name>" & _
543	+	"<version>" & osVersionMajor & "." & osVersionMinor & "</version>" & _
544	+	"<release>" & osBuild & "</release>" & _
545	+	"<platform>" & processorType & "</platform>" & _
546	+	"<uptime>" & uptime & "</uptime>" & _
547	+	"</os>" & _
548	+	"<users><count>" & userCount & "</count></users>" & _
549	+	"<cpu><idle>" & percent_idle & "</idle><user>" & cpu_time & "</user></cpu>" & _
550	+	"<memory><total>" & memTotal & "</total><free>" & memFree & "</free></memory>" & _
551	+	"<swap><total>" & swapTotal & "</total><free>" & swapFree & "</free></swap>" & _
552	+	"</packet>"
553	+
554	+	' Show the interested user what we are sending.
555	+	Text1.Text = "Last packet contained: -" & vbCrLf & xml
556	+
557	+	' Use the first winsock control to send a UDP packet.
558	+	UDPSock.RemoteHost = filterHostname
559	+	UDPSock.RemotePort = filterUDPPort
560	+	UDPSock.SendData xml
561	+	Status.Caption = "UDP packet sent"
562	+	Label3.Caption = UDPUpdateTime
563	+	End If
564	+
565	+	If Label4.Caption < 1 Then
566	+	' establish a TCP connection to a filter
567	+	TCPSock.Close
568	+	TCPSock.Connect filterHostname, filterTCPPort
569	+	Label4.Caption = TCPUpdateTime
570	+	End If
571	+
572	+	End Sub
573	+
574	+
575	+	' Format the current date and time as a long integer representing
576	+	' the number of seconds since the epoch.
577	+	Function Date2Num() As Long
578	+	Dim x As Long
579	+	x = DateDiff("s", "1-1-1970", Now)
580	+	Date2Num = x
581	+	End Function

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