📄 frmupnptraversalbringin.frm
字号:
VERSION 5.00
Object = "{248DD890-BB45-11CF-9ABC-0080C7E7B78D}#1.0#0"; "MSWINSCK.OCX"
Begin VB.Form frmUPnPTraversalBringIn
Caption = "内网客户携带新地址端口穿越NAT"
ClientHeight = 6270
ClientLeft = 60
ClientTop = 450
ClientWidth = 7365
LinkTopic = "Form2"
ScaleHeight = 6270
ScaleWidth = 7365
StartUpPosition = 1 'CenterOwner
Begin VB.CommandButton cmdConnect
Caption = "开始连接"
Height = 375
Left = 3795
TabIndex = 26
Top = 3135
Width = 1560
End
Begin VB.TextBox txtDisplay
Height = 2520
Left = 375
MultiLine = -1 'True
ScrollBars = 3 'Both
TabIndex = 25
Text = "frmUPnPTraversalBringIn.frx":0000
Top = 3675
Width = 6660
End
Begin VB.TextBox txtService
Height = 285
Index = 10
Left = 5415
TabIndex = 24
Text = "Text1"
Top = 2625
Width = 1575
End
Begin VB.TextBox txtService
Height = 285
Index = 9
Left = 1980
TabIndex = 23
Text = "Text1"
Top = 2640
Width = 1575
End
Begin VB.TextBox txtService
Height = 285
Index = 0
Left = 1965
TabIndex = 20
Text = "Text1"
Top = 450
Width = 5055
End
Begin VB.TextBox txtService
Height = 285
Index = 8
Left = 5430
TabIndex = 18
Text = "Text1"
Top = 2010
Width = 1575
End
Begin VB.TextBox txtService
Height = 285
Index = 7
Left = 5430
TabIndex = 17
Text = "Text1"
Top = 1605
Width = 1575
End
Begin VB.TextBox txtService
Height = 285
Index = 1
Left = 1980
TabIndex = 7
Text = "Text1"
Top = 810
Width = 1575
End
Begin VB.TextBox txtService
Height = 285
Index = 2
Left = 1965
TabIndex = 6
Text = "Text1"
Top = 1215
Width = 1575
End
Begin VB.TextBox txtService
Height = 285
Index = 3
Left = 1980
TabIndex = 5
Text = "Text1"
Top = 1635
Width = 1575
End
Begin VB.TextBox txtService
Height = 285
Index = 4
Left = 1965
TabIndex = 4
Text = "Text1"
Top = 2010
Width = 1575
End
Begin VB.TextBox txtService
Height = 285
Index = 5
Left = 5430
TabIndex = 3
Text = "Text1"
Top = 825
Width = 1575
End
Begin VB.TextBox txtService
Height = 285
Index = 6
Left = 5430
TabIndex = 2
Text = "Text1"
Top = 1215
Width = 1575
End
Begin VB.CommandButton cmdQuery
Caption = "获取NAT外网信息"
Height = 375
Left = 330
TabIndex = 1
Top = 3135
Width = 1560
End
Begin VB.CommandButton cmdOk
Caption = "开始穿越"
Height = 375
Left = 5475
TabIndex = 0
Top = 3135
Width = 1560
End
Begin MSWinsockLib.Winsock wskIn
Left = 2370
Top = 3135
_ExtentX = 741
_ExtentY = 741
_Version = 393216
End
Begin VB.Line Line1
BorderColor = &H80000004&
Index = 3
X1 = 375
X2 = 7080
Y1 = 3015
Y2 = 3015
End
Begin VB.Line Line1
Index = 2
X1 = 375
X2 = 7095
Y1 = 3000
Y2 = 3000
End
Begin VB.Line Line1
BorderColor = &H80000004&
Index = 1
X1 = 375
X2 = 7080
Y1 = 2505
Y2 = 2505
End
Begin VB.Line Line1
Index = 0
X1 = 375
X2 = 7095
Y1 = 2490
Y2 = 2490
End
Begin VB.Label Label1
AutoSize = -1 'True
Caption = "外网客户地址："
Height = 195
Index = 9
Left = 345
TabIndex = 22
Top = 2655
Width = 1260
End
Begin VB.Label Label1
AutoSize = -1 'True
Caption = "外网客户端口："
Height = 195
Index = 10
Left = 3720
TabIndex = 21
Top = 2670
Width = 1260
End
Begin VB.Label Label1
AutoSize = -1 'True
Caption = "所用协议："
Height = 195
Index = 0
Left = 360
TabIndex = 19
Top = 495
Width = 900
End
Begin VB.Label Label1
AutoSize = -1 'True
Caption = "NAT外网初始地址："
Height = 195
Index = 5
Left = 3720
TabIndex = 16
Top = 855
Width = 1590
End
Begin VB.Label Label1
AutoSize = -1 'True
Caption = "NAT外网新地址："
Height = 195
Index = 7
Left = 3720
TabIndex = 15
Top = 1680
Width = 1410
End
Begin VB.Label Label1
AutoSize = -1 'True
Caption = "NAT外网新端口："
Height = 195
Index = 8
Left = 3720
TabIndex = 14
Top = 2070
Width = 1410
End
Begin VB.Label Label1
AutoSize = -1 'True
Caption = "NAT外网初始端口："
Height = 195
Index = 6
Left = 3720
TabIndex = 13
Top = 1260
Width = 1590
End
Begin VB.Label Label1
AutoSize = -1 'True
Caption = "内网客户初始地址："
Height = 195
Index = 1
Left = 360
TabIndex = 12
Top = 855
Width = 1620
End
Begin VB.Label Label1
AutoSize = -1 'True
Caption = "内网客户新地址："
Height = 195
Index = 3
Left = 360
TabIndex = 11
Top = 1680
Width = 1440
End
Begin VB.Label Label1
AutoSize = -1 'True
Caption = "内网客户新端口："
Height = 195
Index = 4
Left = 360
TabIndex = 10
Top = 2085
Width = 1440
End
Begin VB.Label Label1
AutoSize = -1 'True
Caption = "内网客户初始端口："
Height = 195
Index = 2
Left = 360
TabIndex = 9
Top = 1260
Width = 1620
End
Begin VB.Label Label2
AutoSize = -1 'True
Caption = "请输入以下字段："
Height = 195
Left = 360
TabIndex = 8
Top = 180
Width = 1440
End
End
Attribute VB_Name = "frmUPnPTraversalBringIn"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit
Private cbdFromOutClient As clsBringData '数据包对象
'0.初始化文本框数据
Private Sub Form_Load()
txtService(0).Text = "TCP"
txtService(1).Text = wskIn.LocalIP
txtService(2).Text = "0"
txtService(3).Text = wskIn.LocalIP
txtService(4).Text = 882
txtService(5).Text = "0"
txtService(6).Text = "0"
txtService(7).Text = "0"
txtService(8).Text = 6882
txtService(9).Text = "193.168.22.44"
txtService(10).Text = 991
txtDisplay.Text = ""
End Sub
'0.1.获取NAT的外网地址
Private Sub cmdQuery_Click()
txtService(5).Text = GetExternalIP()
txtService(7).Text = txtService(5).Text
End Sub
'1.连接外网客户端
Private Sub cmdConnect_Click()
If CheckInput() = False Then
Exit Sub
End If
DisplayMsg "连接外网客户端..."
wskIn.Close
If txtService(0).Text = "TCP" Then
wskIn.Protocol = sckTCPProtocol
Else
wskIn.Protocol = sckUDPProtocol
End If
wskIn.Connect txtService(9).Text, txtService(10).Text
End Sub
'1.如果连接完成，则显示相关信息
Private Sub wskIn_Connect()
DisplayMsg "完成连接外网客户端"
txtService(2).Text = wskIn.LocalPort
DisplayMsg "更新内网客户初始端口"
End Sub
'1.连接完成后，发送数据，并设置NAT以让新端口数据能穿越NAT
Private Sub cmdOK_Click()
If CheckInput() = False Then
Exit Sub
End If
DisplayMsg "开始穿越NAT..."
DisplayMsg "开始生成携带新地址端口的数据包..."
Dim cbdData As New clsBringData
cbdData.strDisplay = "来自" & txtService(1).Text & ":" & txtService(2).Text & "的数据包，请通过新地址端口回话，谢谢"
cbdData.strOldIP = txtService(1).Text
cbdData.strOldPort = txtService(2).Text
cbdData.strNewIP = txtService(3).Text
cbdData.strNewPort = txtService(4).Text
cbdData.strOldNatIP = txtService(5).Text
cbdData.strOldNatPort = txtService(6).Text
cbdData.strNewNatIP = txtService(7).Text
cbdData.strNewNatPort = txtService(8).Text
DisplayMsg "完成携带新地址端口的数据包"
DisplayMsg "正在设置NAT，穿越中..."
If SetExternalPort(txtService(8).Text, txtService(0).Text, txtService(4).Text, wskIn.LocalIP, True, Me.Caption + "：" + txtService(9).Text) = True Then
DisplayMsg "设置NAT成功，穿越成功。外网用户通过" + txtService(7).Text + ":" + txtService(8).Text + "可以访问内网新端口了"
Else
DisplayMsg "设置NAT失败，穿越失败。"
End If
DisplayMsg "发送数据包到外网客户端..."
wskIn.SendData cbdData.DataFieldToString
End Sub
'1.数据发送完成后显示相关信息，并开始做服务器，监听端口等待外网客户端的连接请求
Private Sub wskIn_SendComplete()
DisplayMsg "完成发送数据包到外网客户端"
DisplayMsg "开始监听端口：" & txtService(4).Text
wskIn.Close
wskIn.LocalPort = txtService(4).Text
wskIn.Listen
End Sub
'2.接收外网客户端的连接请求
Private Sub wskIn_ConnectionRequest(ByVal requestID As Long)
'检查控件的 State 属性是否为关闭的。
'如果不是，
'在接受新的连接之前先关闭此连接。
If wskIn.State <> sckClosed Then wskIn.Close
'接受具有 requestID 参数的连接。
wskIn.Accept requestID
DisplayMsg "接收来自外网客户的连接"
End Sub
'2.接收来自外网客户端的数据包，并根据数据包显示相关信息
Private Sub wskIn_DataArrival(ByVal bytesTotal As Long)
Dim strTemp As String
wskIn.GetData strTemp
Set cbdFromOutClient = New clsBringData
cbdFromOutClient.StringToDataField strTemp
DisplayMsg "获得来自外网客户端的数据"
DisplayMsg "数据内容为：" & cbdFromOutClient.strDisplay
txtService(5).Text = cbdFromOutClient.strOldNatIP
txtService(6).Text = cbdFromOutClient.strOldNatPort
DisplayMsg "更新NAT外网初始端口"
End Sub
'改变文本框的底色
Private Sub txtService_GotFocus(Index As Integer)
txtService(Index).BackColor = &H80000018
End Sub
'改变文本框的底色
Private Sub txtService_LostFocus(Index As Integer)
txtService(Index).BackColor = vbWhite
End Sub
'处理文本框中按下回车键
Private Sub txtService_KeyPress(Index As Integer, KeyAscii As Integer)
Dim intTemp As Integer
If KeyAscii = 13 Then
If Index = txtService.UBound Then
intTemp = txtService.LBound
Else
intTemp = Index + 1
End If
txtService(intTemp).SetFocus
KeyAscii = 0
End If
End Sub
'显示信息
Private Sub DisplayMsg(strMsg As String)
txtDisplay.Text = txtDisplay.Text & DateTime.Now & " --> " & strMsg & Chr(13) & Chr(10)
txtDisplay.SelStart = Len(txtDisplay.Text)
End Sub
'检查输入
Private Function CheckInput() As Boolean
CheckInput = True
Dim i As Integer
For i = txtService.LBound To txtService.UBound
If txtService(i).Text = "" Then
MsgBox "请输入数据到" & Label1(i).Caption
txtService(i).SetFocus
CheckInput = False
Exit Function
End If
Next i
txtService(0).Text = UCase(txtService(0).Text)
If txtService(0).Text <> "TCP" And txtService(0).Text <> "UDP" Then
MsgBox "请输入正确数据到" & Label1(0).Caption & "如：TCP、UDP"
txtService(0).SetFocus
CheckInput = False
Exit Function
End If
' 其他的情况目前没有检查，如IP地址合法性、端口合法性等
End Function
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