📄 myudp.frm
字号:
VERSION 5.00
Object = "{248DD890-BB45-11CF-9ABC-0080C7E7B78D}#1.0#0"; "MSWINSCK.OCX"
Begin VB.Form udp
Caption = "Winsock控件UDP程序开发"
ClientHeight = 5055
ClientLeft = 60
ClientTop = 345
ClientWidth = 6060
LinkTopic = "Form1"
ScaleHeight = 5055
ScaleWidth = 6060
StartUpPosition = 3 'Windows Default
Begin VB.CommandButton cmdExit
Caption = "退出程序"
Height = 375
Left = 2160
TabIndex = 22
Top = 4560
Width = 1455
End
Begin VB.Frame Frame3
Caption = "Winsock Information"
Height = 1575
Left = 6120
TabIndex = 17
Top = 2400
Width = 15
Begin VB.Timer Timer1
Left = 2040
Top = 3120
End
Begin VB.Label lblRemotePort
Height = 255
Left = 1320
TabIndex = 30
Top = 2640
Width = 1455
End
Begin VB.Label Label12
Caption = " Remote Port:"
Height = 255
Left = 240
TabIndex = 29
Top = 2640
Width = 975
End
Begin VB.Label lblRemoteIP
Height = 255
Left = 1320
TabIndex = 28
Top = 2280
Width = 1455
End
Begin VB.Label Label11
Caption = " Remote IP:"
Height = 255
Left = 360
TabIndex = 27
Top = 2280
Width = 855
End
Begin VB.Label lblReceiverState
Caption = "sckClosed"
Height = 255
Left = 1320
TabIndex = 26
Top = 1440
Width = 1455
End
Begin VB.Label lblSenderState
Caption = "sckClosed"
Height = 255
Left = 1320
TabIndex = 25
Top = 1080
Width = 1455
End
Begin VB.Label Label10
Caption = "Receiver State:"
Height = 255
Left = 120
TabIndex = 24
Top = 1440
Width = 1215
End
Begin VB.Label Label9
Caption = "Sender State:"
Height = 255
Left = 240
TabIndex = 23
Top = 1080
Width = 1095
End
Begin VB.Label lblLocalIP
Height = 255
Left = 1320
TabIndex = 21
Top = 720
Width = 1335
End
Begin VB.Label Label8
Caption = "Local IP:"
Height = 255
Left = 600
TabIndex = 20
Top = 720
Width = 735
End
Begin VB.Label lblHostName
Height = 255
Left = 1320
TabIndex = 19
Top = 360
Width = 1455
End
Begin VB.Label Label7
Caption = " Local Name:"
Height = 255
Left = 240
TabIndex = 18
Top = 360
Width = 975
End
End
Begin VB.Frame Frame2
Caption = "接收端"
Height = 2295
Left = 120
TabIndex = 5
Top = 2160
Width = 5895
Begin VB.CommandButton cmdCloseListen
Caption = "停止侦听"
Height = 375
Left = 3960
TabIndex = 16
Top = 1560
Width = 1455
End
Begin VB.TextBox txtRecvLocalPort
Height = 285
Left = 1680
TabIndex = 9
Text = "5000"
Top = 360
Width = 1575
End
Begin VB.CommandButton cmdListen
Caption = "开始侦听"
Height = 375
Left = 3960
TabIndex = 8
Top = 720
Width = 1455
End
Begin VB.ListBox lstRecvData
Height = 1425
ItemData = "myUDP.frx":0000
Left = 120
List = "myUDP.frx":0002
TabIndex = 6
Top = 720
Width = 3645
End
Begin MSWinsockLib.Winsock sockRecv
Left = 5280
Top = 240
_ExtentX = 741
_ExtentY = 741
_Version = 393216
End
Begin VB.Label Label3
Caption = "接收端侦听端口"
Height = 255
Left = 165
TabIndex = 10
Top = 360
Width = 1335
End
End
Begin VB.Frame Frame1
Caption = "发送端"
Height = 1935
Left = 120
TabIndex = 0
Top = 120
Width = 5895
Begin VB.CommandButton cmdCloseSend
Caption = "关闭socket"
Height = 375
Left = 3960
TabIndex = 15
Top = 840
Width = 1455
End
Begin VB.TextBox txtSendRemotePort
Height = 285
Left = 1800
TabIndex = 13
Text = "5000"
Top = 1080
Width = 1335
End
Begin VB.TextBox txtSendData
Height = 285
Left = 1800
TabIndex = 11
Top = 1440
Width = 3615
End
Begin VB.CommandButton cmdSendDgram
Caption = "发送信息"
Height = 375
Left = 3960
TabIndex = 7
Top = 360
Width = 1455
End
Begin VB.TextBox txtSendLocalPort
Height = 285
Left = 1800
TabIndex = 3
Text = "1234"
Top = 720
Width = 1335
End
Begin VB.TextBox txtRecipientIP
Height = 285
Left = 1800
TabIndex = 1
Text = "10.11.111.129"
Top = 360
Width = 1695
End
Begin MSWinsockLib.Winsock sockSend
Left = 120
Top = 960
_ExtentX = 741
_ExtentY = 741
_Version = 393216
End
Begin VB.Label Label5
Alignment = 1 'Right Justify
Caption = "接收端端口"
Height = 255
Left = 720
TabIndex = 14
Top = 1080
Width = 975
End
Begin VB.Label Label4
Alignment = 1 'Right Justify
Caption = "发送的信息"
Height = 255
Left = 720
TabIndex = 12
Top = 1440
Width = 975
End
Begin VB.Label Label1
Alignment = 1 'Right Justify
Caption = "本地绑定端口"
Height = 255
Left = 480
TabIndex = 4
Top = 720
Width = 1215
End
Begin VB.Label Label2
Alignment = 1 'Right Justify
Caption = "接收端的地址"
Height = 255
Left = 120
TabIndex = 2
Top = 360
Width = 1575
End
End
End
Attribute VB_Name = "udp"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit
Private Sub cmdExit_Click()
Unload Me
End Sub
Private Sub cmdSendDgram_Click()
' 绑定本地端口，然后发送数据
If (sockSend.State = sckClosed) Then
sockSend.RemoteHost = txtRecipientIP.Text
sockSend.RemotePort = CInt(txtSendRemotePort.Text)
sockSend.Bind CInt(txtSendLocalPort.Text)
cmdCloseSend.Enabled = True
End If
'
' 现在发送数据
'
sockSend.SendData txtSendData.Text
End Sub
'"开始侦听"按钮单击事件
Private Sub cmdListen_Click()
' 绑定到本地端口
'
sockRecv.Bind CInt(txtRecvLocalPort.Text)
'
' 改变控件的enable属性，因为单击侦听按钮两次会出现错误
'
cmdListen.Enabled = False
cmdCloseListen.Enabled = True
End Sub
Private Sub cmdCloseSend_Click()
' 关闭发送socket，然后disable发送信息按钮
'
sockSend.Close
cmdCloseSend.Enabled = False
End Sub
Private Sub cmdCloseListen_Click()
' 关闭服务socket
'
sockRecv.Close
' Enable侦听按钮
'
cmdListen.Enabled = True
cmdCloseListen.Enabled = False
lstRecvData.Clear
End Sub
Private Sub Form_Load()
' 初始化socket
'
sockSend.Protocol = sckUDPProtocol
sockRecv.Protocol = sckUDPProtocol
lblHostName.Caption = sockSend.LocalHostName
lblLocalIP.Caption = sockSend.LocalIP
cmdCloseListen.Enabled = False
cmdCloseSend.Enabled = False
' Timer1.Interval = 500
' Timer1.Enabled = True
End Sub
Private Sub sockSend_Error(ByVal Number As Integer, _
Description As String, ByVal Scode As Long, _
ByVal Source As String, ByVal HelpFile As String, _
ByVal HelpContext As Long, CancelDisplay As Boolean)
MsgBox Description
End Sub
Private Sub sockRecv_DataArrival(ByVal bytesTotal As Long)
Dim data As String
' 创建一个足够大的缓冲区来接受数据
data = String(bytesTotal + 2, Chr$(0))
sockRecv.GetData data, , bytesTotal
lstRecvData.AddItem data
' 修改远程服务器属性
'
lblRemoteIP.Caption = sockRecv.RemoteHostIP
lblRemotePort.Caption = sockRecv.RemotePort
End Sub
Private Sub sockRecv_Error(ByVal Number As Integer, _
Description As String, ByVal Scode As Long, _
ByVal Source As String, ByVal HelpFile As String, _
ByVal HelpContext As Long, CancelDisplay As Boolean)
MsgBox Description
End Sub
'Private Sub Timer1_Timer()
' ' 修改socket的状态
'
' Select Case sockSend.State
' Case sckClosed
' lblSenderState.Caption = "sckClosed"
' Case sckOpen
' lblSenderState.Caption = "sckOpen"
' Case sckListening
' lblSenderState.Caption = "sckListening"
' Case sckConnectionPending
' lblSenderState.Caption = "sckConnectionPending"
' Case sckResolvingHost
' lblSenderState.Caption = "sckResolvingHost"
' Case sckHostResolved
' lblSenderState.Caption = "sckHostResolved"
' Case sckConnecting
' lblSenderState.Caption = "sckConnecting"
' Case sckClosing
' lblSenderState.Caption = "sckClosing"
' Case sckError
' lblSenderState.Caption = "sckError"
' Case Else
' lblSenderState.Caption = "unknown"
' End Select
' Select Case sockRecv.State
' Case sckClosed
' lblReceiverState.Caption = "sckClosed"
' Case sckOpen
' lblReceiverState.Caption = "sckOpen"
' Case sckListening
' lblReceiverState.Caption = "sckListening"
' Case sckConnectionPending
' lblReceiverState.Caption = "sckConnectionPending"
' Case sckResolvingHost
' lblReceiverState.Caption = "sckResolvingHost"
' Case sckHostResolved
' lblReceiverState.Caption = "sckHostResolved"
' Case sckConnecting
' lblReceiverState.Caption = "sckConnecting"
' Case sckClosing
' lblReceiverState.Caption = "sckClosing"
' Case sckError
' lblReceiverState.Caption = "sckError"
' Case Else
' lblReceiverState.Caption = "unknown"
' End Select
'End Sub
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