host/vb_net_test/nettest.frm

VERSION 5.00
Object = "{248DD890-BB45-11CF-9ABC-0080C7E7B78D}#1.0#0"; "MSWINSCK.OCX"
Begin VB.Form Form1 
   BorderStyle     =   4  'Fixed ToolWindow
   Caption         =   "i-scream Winhost"
   ClientHeight    =   5655
   ClientLeft      =   45
   ClientTop       =   285
   ClientWidth     =   5670
   LinkTopic       =   "Form1"
   MaxButton       =   0   'False
   MinButton       =   0   'False
   ScaleHeight     =   5655
   ScaleWidth      =   5670
   ShowInTaskbar   =   0   'False
   StartUpPosition =   3  'Windows Default
   Begin VB.Timer Timer1 
      Left            =   4200
      Top             =   1200
   End
   Begin VB.TextBox Text4 
      Height          =   1575
      Left            =   240
      MultiLine       =   -1  'True
      ScrollBars      =   2  'Vertical
      TabIndex        =   1
      Text            =   "nettest.frx":0000
      Top             =   3000
      Width           =   5055
   End
   Begin VB.CommandButton Reconfigure 
      Caption         =   "Reconfigure with FilterManager"
      Height          =   495
      Left            =   120
      TabIndex        =   0
      Top             =   120
      Width           =   2895
   End
   Begin MSWinsockLib.Winsock TCPSock 
      Left            =   5160
      Top             =   1200
      _ExtentX        =   741
      _ExtentY        =   741
      _Version        =   393216
   End
   Begin MSWinsockLib.Winsock UDPSock 
      Left            =   4680
      Top             =   1200
      _ExtentX        =   741
      _ExtentY        =   741
      _Version        =   393216
      Protocol        =   1
   End
   Begin VB.Label Label2 
      Alignment       =   1  'Right Justify
      Caption         =   "Next heartbeat:"
      Height          =   255
      Left            =   3360
      TabIndex        =   6
      Top             =   480
      Width           =   1455
   End
   Begin VB.Label Label1 
      Alignment       =   1  'Right Justify
      Caption         =   "Next UDP packet:"
      Height          =   255
      Left            =   3360
      TabIndex        =   5
      Top             =   120
      Width           =   1455
   End
   Begin VB.Label Label4 
      BorderStyle     =   1  'Fixed Single
      Caption         =   "0"
      Height          =   255
      Left            =   4920
      TabIndex        =   4
      Top             =   480
      Width           =   615
   End
   Begin VB.Label Label3 
      BorderStyle     =   1  'Fixed Single
      Caption         =   "0"
      Height          =   255
      Left            =   4920
      TabIndex        =   3
      Top             =   120
      Width           =   615
   End
   Begin VB.Label Status 
      Caption         =   "Status:"
      Height          =   255
      Left            =   120
      TabIndex        =   2
      Top             =   840
      Width           =   5415
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
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
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

Dim filterManagerHostname As String
Dim filterManagerTCPPort As Integer

Dim filterHostname As String
Dim filterTCPPort As Integer
Dim filterUDPPort As Integer
Dim fileList As String
Dim lastModified As String

Dim UDPUpdateTime As Integer
Dim TCPUpdateTime As Integer

Dim protocolVersion As String
Dim connected As Boolean
Dim responseNumber As Integer


Private Sub Command1_Click()

    ' build the contents of the XML packet.
    xml = "<packet></packet>"

    ' Use the first winsock control to send a UDP packet.
    UDPSock.RemoteHost = filterHostname
    UDPSock.RemotePort = filterUDPPort
    UDPSock.SendData xml
    Status.Caption = "i-scream Winhost " & protocolVersion & " - UDP packet sent."

End Sub


Private Sub Command3_Click()
    ' establish a TCP connection to a filter
    TCPSock.Close
    TCPSock.Connect filterHostname, filterTCPPort
End Sub

Private Sub Form_Load()
    protocolVersion = "1.1"
       
    Status.Caption = "Loading"
    Form1.Caption = "i-scream Winhost " & protocolVersion
    
    ''''TEMP
    filterManagerHostname = "killigrew.ukc.ac.uk"
    filterManagerTCPPort = 4567
    Reconfigure_Click
    Exit Sub
    ''' ENDTEMP
    
    On Error GoTo iniError
    Dim buf As String * 256
    Dim length As Long
    length = GetPrivateProfileString("i-scream Winhost", "FilterManager", "<no value>", buf, Len(buf), App.Path & "winhost.ini")
    filterManagerHostname = Left$(buf, length)
    length = GetPrivateProfileString("i-scream Winhost", "FilterManagerPort", "<no value>", buf, Len(buf), App.Path & "winhost.ini")
    filterManagerTCPPort = Left$(buf, length)
    
    Status.Caption = "Connecting to Filter Manager"
    
    Exit Sub
    
iniError:
    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")
    End
    
End Sub

Private Sub Form_QueryUnload(Cancel As Integer, UnloadMode As Integer)
    x = MsgBox("Are you sure you want to shut down the Winhost?", vbYesNo, "i-scream Winhost")
    If x = 7 Then
        Cancel = True
    End If

End Sub

Private Sub Reconfigure_Click()
    ' establish a TCP connection to a filtermanager
    connected = False
    TCPSock.Close
    TCPSock.Connect filterManagerHostname, filterManagerTCPPort
End Sub

Private Sub TCPSock_Connect()
    
    responseNumber = 0
   
    ' Send something as soon as we connect to the server.
    If connected = False Then
        ' contact the FilterManager
        TCPSock.SendData "STARTCONFIG" & vbCrLf
    Else
       ' Contact the Filter
       TCPSock.SendData "HEARTBEAT" & vbCrLf
    End If
   
End Sub

Private Sub TCPSock_DataArrival(ByVal bytesTotal As Long)
    
    responseNumber = responseNumber + 1
    
    ' Get the line from the server.
    TCPSock.GetData response, vbString, bytesTotal
    
    ' Remove linefeeds and returns from the line.
    response = Replace(response, Chr(13), "")
    response = Replace(response, Chr(10), "")
    Text4.Text = Text4.Text & vbCrLf & response
    
    If connected = False Then
        ' Perform TCP configuration (1.1)
        On Error GoTo configError
        Select Case responseNumber
            Case 1:
                If Not response = "OK" Then GoTo configError
                TCPSock.SendData "LASTMODIFIED" & vbCrLf
            Case 2:
                If response = "ERROR" Then GoTo configError
                lastModified = response
                TCPSock.SendData "FILELIST" & vbCrLf
            Case 3:
                If response = "ERROR" Then GoTo configError
                fileList = response
                TCPSock.SendData "UDPUpdateTime" & vbCrLf
            Case 4:
                If response = "ERROR" Then GoTo configError
                UDPUpdateTime = response
                TCPSock.SendData "TCPUpdateTime" & vbCrLf
            Case 5:
                If response = "ERROR" Then GoTo configError
                TCPUpdateTime = response
                TCPSock.SendData "ENDCONFIG" & vbCrLf
            Case 6:
                If Not response = "OK" Then GoTo configError
                TCPSock.SendData "FILTER" & vbCrLf
            Case 7:
                'we got a filter list here.
                readTo = 0
                ' get hostname
                readTo = InStr(1, response, ";", vbBinaryCompare)
                filterHostname = Mid(response, 1, readTo - 1)
                response = Mid(response, readTo + 1, Len(response))
                ' get UDP Port number
                readTo = InStr(1, response, ";")
                filterUDPPort = Mid(response, 1, readTo - 1)
                response = Mid(response, readTo + 1, Len(response))
                ' get TCP Port number
                filterTCPPort = response
                TCPSock.SendData "END" & vbCrLf
            Case 8:
                If Not response = "OK" Then GoTo configError
                connected = True
                responseNumber = 0
                TCPSock.Close
                Text4.Text = Text4.Text & vbCrLf & "  <closed>"
                Status.Caption = "Configuration successful"
                Label3.Caption = UDPUpdateTime
                Label4.Caption = TCPUpdateTime
                Timer1.Interval = 1000
        End Select
    Else
        ' Perform a heartbeat (1.1)
        On Error GoTo heartbeatError
        Select Case responseNumber
            Case 1:
                If Not response = "OK" Then GoTo heartbeatError
                TCPSock.SendData "CONFIG" & vbCrLf
            Case 2:
                If Not response = "OK" Then GoTo heartbeatError
                TCPSock.SendData fileList & vbCrLf
            Case 3:
                If Not response = "OK" Then GoTo heartbeatError
                TCPSock.SendData lastModified & vbCrLf
            Case 4:
                If Not response = "OK" Then GoTo heartbeatError
                TCPSock.SendData "ENDHEARTBEAT" & vbCrLf
            Case 5:
                If Not response = "OK" Then GoTo heartbeatError
                TCPSock.Close
                Status.Caption = "Heartbeat sent successfully."
        End Select
    
    End If
    
    
    Exit Sub
    
configError:
    Status.Caption = "FAILED to get configuration"
    Exit Sub
heartbeatError:
    Status.Caption = "Heatbeat FAILED"
    Exit Sub
End Sub

Private Sub Timer1_Timer()

    Label3.Caption = Label3.Caption - 1
    Label4.Caption = Label4.Caption - 1
    
    Status.Caption = ""
    
    If Label3.Caption < 1 Then
        ' build the contents of the XML packet.
        xml = "<packet></packet>"

        ' Use the first winsock control to send a UDP packet.
        UDPSock.RemoteHost = filterHostname
        UDPSock.RemotePort = filterUDPPort
        UDPSock.SendData xml
        Status.Caption = "UDP packet sent"
        Label3.Caption = UDPUpdateTime
    End If
    
    If Label4.Caption < 1 Then
        ' establish a TCP connection to a filter
        TCPSock.Close
        TCPSock.Connect filterHostname, filterTCPPort
        Label4.Caption = TCPUpdateTime
    End If

End Sub
Revision:	1.10
Committed:	Fri Feb 23 11:42:06 2001 UTC (23 years, 9 months ago) by pjm2
Branch:	MAIN
Changes since 1.9:	+55 -80 lines
Log Message:	Tidied up the displaying of errors on the form.
#	User	Rev	Content
1	pjm2	1.1	VERSION 5.00
2			Object = "{248DD890-BB45-11CF-9ABC-0080C7E7B78D}#1.0#0"; "MSWINSCK.OCX"
3			Begin VB.Form Form1
4	pjm2	1.10	BorderStyle = 4 'Fixed ToolWindow
5			Caption = "i-scream Winhost"
6	pjm2	1.1	ClientHeight = 5655
7			ClientLeft = 45
8	pjm2	1.10	ClientTop = 285
9	pjm2	1.1	ClientWidth = 5670
10			LinkTopic = "Form1"
11			MaxButton = 0 'False
12			MinButton = 0 'False
13			ScaleHeight = 5655
14			ScaleWidth = 5670
15			ShowInTaskbar = 0 'False
16			StartUpPosition = 3 'Windows Default
17	pjm2	1.8	Begin VB.Timer Timer1
18	pjm2	1.10	Left = 4200
19			Top = 1200
20	pjm2	1.1	End
21			Begin VB.TextBox Text4
22	pjm2	1.6	Height = 1575
23	pjm2	1.1	Left = 240
24			MultiLine = -1 'True
25			ScrollBars = 2 'Vertical
26	pjm2	1.10	TabIndex = 1
27	pjm2	1.1	Text = "nettest.frx":0000
28			Top = 3000
29			Width = 5055
30			End
31	pjm2	1.10	Begin VB.CommandButton Reconfigure
32			Caption = "Reconfigure with FilterManager"
33			Height = 495
34			Left = 120
35			TabIndex = 0
36			Top = 120
37			Width = 2895
38	pjm2	1.1	End
39	pjm2	1.5	Begin MSWinsockLib.Winsock TCPSock
40	pjm2	1.10	Left = 5160
41			Top = 1200
42	pjm2	1.1	_ExtentX = 741
43			_ExtentY = 741
44			_Version = 393216
45			End
46	pjm2	1.5	Begin MSWinsockLib.Winsock UDPSock
47	pjm2	1.10	Left = 4680
48			Top = 1200
49	pjm2	1.1	_ExtentX = 741
50			_ExtentY = 741
51			_Version = 393216
52			Protocol = 1
53			End
54	pjm2	1.9	Begin VB.Label Label2
55			Alignment = 1 'Right Justify
56			Caption = "Next heartbeat:"
57	pjm2	1.8	Height = 255
58	pjm2	1.10	Left = 3360
59			TabIndex = 6
60	pjm2	1.9	Top = 480
61			Width = 1455
62	pjm2	1.8	End
63	pjm2	1.9	Begin VB.Label Label1
64			Alignment = 1 'Right Justify
65			Caption = "Next UDP packet:"
66	pjm2	1.8	Height = 255
67	pjm2	1.10	Left = 3360
68			TabIndex = 5
69	pjm2	1.9	Top = 120
70			Width = 1455
71	pjm2	1.8	End
72	pjm2	1.9	Begin VB.Label Label4
73	pjm2	1.10	BorderStyle = 1 'Fixed Single
74	pjm2	1.9	Caption = "0"
75	pjm2	1.7	Height = 255
76	pjm2	1.10	Left = 4920
77			TabIndex = 4
78	pjm2	1.9	Top = 480
79			Width = 615
80	pjm2	1.7	End
81	pjm2	1.9	Begin VB.Label Label3
82	pjm2	1.10	BorderStyle = 1 'Fixed Single
83	pjm2	1.9	Caption = "0"
84	pjm2	1.7	Height = 255
85	pjm2	1.10	Left = 4920
86			TabIndex = 3
87	pjm2	1.9	Top = 120
88			Width = 615
89	pjm2	1.7	End
90	pjm2	1.6	Begin VB.Label Status
91			Caption = "Status:"
92	pjm2	1.1	Height = 255
93	pjm2	1.6	Left = 120
94	pjm2	1.10	TabIndex = 2
95			Top = 840
96	pjm2	1.6	Width = 5415
97	pjm2	1.1	End
98			End
99			Attribute VB_Name = "Form1"
100			Attribute VB_GlobalNameSpace = False
101			Attribute VB_Creatable = False
102			Attribute VB_PredeclaredId = True
103			Attribute VB_Exposed = False
104	pjm2	1.4	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
105			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
106
107			Dim filterManagerHostname As String
108			Dim filterManagerTCPPort As Integer
109
110	pjm2	1.2	Dim filterHostname As String
111	pjm2	1.3	Dim filterTCPPort As Integer
112			Dim filterUDPPort As Integer
113			Dim fileList As String
114			Dim lastModified As String
115	pjm2	1.2
116	pjm2	1.7	Dim UDPUpdateTime As Integer
117			Dim TCPUpdateTime As Integer
118
119	pjm2	1.2	Dim protocolVersion As String
120			Dim connected As Boolean
121	pjm2	1.1	Dim responseNumber As Integer
122
123
124			Private Sub Command1_Click()
125
126	pjm2	1.5	' build the contents of the XML packet.
127	pjm2	1.4	xml = "<packet></packet>"
128
129	pjm2	1.2	' Use the first winsock control to send a UDP packet.
130	pjm2	1.5	UDPSock.RemoteHost = filterHostname
131			UDPSock.RemotePort = filterUDPPort
132			UDPSock.SendData xml
133	pjm2	1.6	Status.Caption = "i-scream Winhost " & protocolVersion & " - UDP packet sent."
134	pjm2	1.1
135			End Sub
136
137
138			Private Sub Command3_Click()
139	pjm2	1.3	' establish a TCP connection to a filter
140	pjm2	1.5	TCPSock.Close
141			TCPSock.Connect filterHostname, filterTCPPort
142	pjm2	1.1	End Sub
143
144	pjm2	1.2	Private Sub Form_Load()
145			protocolVersion = "1.1"
146	pjm2	1.10
147			Status.Caption = "Loading"
148			Form1.Caption = "i-scream Winhost " & protocolVersion
149	pjm2	1.6
150	pjm2	1.4	''''TEMP
151			filterManagerHostname = "killigrew.ukc.ac.uk"
152			filterManagerTCPPort = 4567
153	pjm2	1.10	Reconfigure_Click
154	pjm2	1.4	Exit Sub
155			''' ENDTEMP
156
157			On Error GoTo iniError
158			Dim buf As String * 256
159			Dim length As Long
160			length = GetPrivateProfileString("i-scream Winhost", "FilterManager", "<no value>", buf, Len(buf), App.Path & "winhost.ini")
161			filterManagerHostname = Left$(buf, length)
162			length = GetPrivateProfileString("i-scream Winhost", "FilterManagerPort", "<no value>", buf, Len(buf), App.Path & "winhost.ini")
163			filterManagerTCPPort = Left$(buf, length)
164
165	pjm2	1.10	Status.Caption = "Connecting to Filter Manager"
166	pjm2	1.6
167	pjm2	1.4	Exit Sub
168
169			iniError:
170			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")
171			End
172
173			End Sub
174
175	pjm2	1.10	Private Sub Form_QueryUnload(Cancel As Integer, UnloadMode As Integer)
176			x = MsgBox("Are you sure you want to shut down the Winhost?", vbYesNo, "i-scream Winhost")
177			If x = 7 Then
178			Cancel = True
179			End If
180
181			End Sub
182
183			Private Sub Reconfigure_Click()
184			' establish a TCP connection to a filtermanager
185			connected = False
186			TCPSock.Close
187			TCPSock.Connect filterManagerHostname, filterManagerTCPPort
188			End Sub
189
190	pjm2	1.5	Private Sub TCPSock_Connect()
191	pjm2	1.6
192			responseNumber = 0
193	pjm2	1.1
194	pjm2	1.3	' Send something as soon as we connect to the server.
195			If connected = False Then
196			' contact the FilterManager
197	pjm2	1.5	TCPSock.SendData "STARTCONFIG" & vbCrLf
198	pjm2	1.3	Else
199			' Contact the Filter
200	pjm2	1.5	TCPSock.SendData "HEARTBEAT" & vbCrLf
201	pjm2	1.3	End If
202	pjm2	1.1
203			End Sub
204
205	pjm2	1.5	Private Sub TCPSock_DataArrival(ByVal bytesTotal As Long)
206	pjm2	1.1
207			responseNumber = responseNumber + 1
208
209			' Get the line from the server.
210	pjm2	1.5	TCPSock.GetData response, vbString, bytesTotal
211	pjm2	1.1
212			' Remove linefeeds and returns from the line.
213			response = Replace(response, Chr(13), "")
214			response = Replace(response, Chr(10), "")
215			Text4.Text = Text4.Text & vbCrLf & response
216
217	pjm2	1.2	If connected = False Then
218			' Perform TCP configuration (1.1)
219			On Error GoTo configError
220			Select Case responseNumber
221			Case 1:
222			If Not response = "OK" Then GoTo configError
223	pjm2	1.5	TCPSock.SendData "LASTMODIFIED" & vbCrLf
224	pjm2	1.2	Case 2:
225			If response = "ERROR" Then GoTo configError
226	pjm2	1.3	lastModified = response
227	pjm2	1.5	TCPSock.SendData "FILELIST" & vbCrLf
228	pjm2	1.2	Case 3:
229			If response = "ERROR" Then GoTo configError
230	pjm2	1.3	fileList = response
231	pjm2	1.5	TCPSock.SendData "UDPUpdateTime" & vbCrLf
232	pjm2	1.2	Case 4:
233			If response = "ERROR" Then GoTo configError
234	pjm2	1.7	UDPUpdateTime = response
235	pjm2	1.5	TCPSock.SendData "TCPUpdateTime" & vbCrLf
236	pjm2	1.2	Case 5:
237			If response = "ERROR" Then GoTo configError
238	pjm2	1.7	TCPUpdateTime = response
239	pjm2	1.5	TCPSock.SendData "ENDCONFIG" & vbCrLf
240	pjm2	1.2	Case 6:
241			If Not response = "OK" Then GoTo configError
242	pjm2	1.5	TCPSock.SendData "FILTER" & vbCrLf
243	pjm2	1.2	Case 7:
244			'we got a filter list here.
245			readTo = 0
246			' get hostname
247			readTo = InStr(1, response, ";", vbBinaryCompare)
248			filterHostname = Mid(response, 1, readTo - 1)
249			response = Mid(response, readTo + 1, Len(response))
250			' get UDP Port number
251			readTo = InStr(1, response, ";")
252			filterUDPPort = Mid(response, 1, readTo - 1)
253			response = Mid(response, readTo + 1, Len(response))
254			' get TCP Port number
255			filterTCPPort = response
256	pjm2	1.5	TCPSock.SendData "END" & vbCrLf
257	pjm2	1.2	Case 8:
258			If Not response = "OK" Then GoTo configError
259			connected = True
260			responseNumber = 0
261	pjm2	1.5	TCPSock.Close
262	pjm2	1.2	Text4.Text = Text4.Text & vbCrLf & " <closed>"
263	pjm2	1.10	Status.Caption = "Configuration successful"
264	pjm2	1.8	Label3.Caption = UDPUpdateTime
265			Label4.Caption = TCPUpdateTime
266			Timer1.Interval = 1000
267	pjm2	1.2	End Select
268			Else
269			' Perform a heartbeat (1.1)
270			On Error GoTo heartbeatError
271			Select Case responseNumber
272			Case 1:
273	pjm2	1.3	If Not response = "OK" Then GoTo heartbeatError
274	pjm2	1.5	TCPSock.SendData "CONFIG" & vbCrLf
275	pjm2	1.2	Case 2:
276	pjm2	1.3	If Not response = "OK" Then GoTo heartbeatError
277	pjm2	1.5	TCPSock.SendData fileList & vbCrLf
278	pjm2	1.2	Case 3:
279	pjm2	1.3	If Not response = "OK" Then GoTo heartbeatError
280	pjm2	1.5	TCPSock.SendData lastModified & vbCrLf
281	pjm2	1.2	Case 4:
282	pjm2	1.3	If Not response = "OK" Then GoTo heartbeatError
283	pjm2	1.5	TCPSock.SendData "ENDHEARTBEAT" & vbCrLf
284	pjm2	1.2	Case 5:
285	pjm2	1.3	If Not response = "OK" Then GoTo heartbeatError
286	pjm2	1.5	TCPSock.Close
287	pjm2	1.10	Status.Caption = "Heartbeat sent successfully."
288	pjm2	1.2	End Select
289
290			End If
291
292
293			Exit Sub
294
295			configError:
296	pjm2	1.10	Status.Caption = "FAILED to get configuration"
297	pjm2	1.8	Exit Sub
298	pjm2	1.2	heartbeatError:
299	pjm2	1.10	Status.Caption = "Heatbeat FAILED"
300	pjm2	1.8	Exit Sub
301	pjm2	1.1	End Sub
302	pjm2	1.5
303	pjm2	1.8	Private Sub Timer1_Timer()
304
305			Label3.Caption = Label3.Caption - 1
306			Label4.Caption = Label4.Caption - 1
307
308	pjm2	1.10	Status.Caption = ""
309	pjm2	1.8
310			If Label3.Caption < 1 Then
311			' build the contents of the XML packet.
312			xml = "<packet></packet>"
313
314			' Use the first winsock control to send a UDP packet.
315			UDPSock.RemoteHost = filterHostname
316			UDPSock.RemotePort = filterUDPPort
317			UDPSock.SendData xml
318	pjm2	1.10	Status.Caption = "UDP packet sent"
319	pjm2	1.8	Label3.Caption = UDPUpdateTime
320			End If
321
322			If Label4.Caption < 1 Then
323			' establish a TCP connection to a filter
324			TCPSock.Close
325			TCPSock.Connect filterHostname, filterTCPPort
326			Label4.Caption = TCPUpdateTime
327			End If
328
329			End Sub