VB.NET C#实现基于UDP的免服务器局域网多客户端点对点通讯

VB 前端之家
前端之家收集整理的这篇文章主要介绍了VB.NET C#实现基于UDP的免服务器局域网多客户端点对点通讯，前端之家小编觉得挺不错的，现在分享给大家，也给大家做个参考。

相信很多人都用过类似飞秋的软件，过去也做过很多局域网的数据传输应用，但要么就是基于TCP的，要么就是需要用户设置对方IP的，需要用户对计算机网络及IP地址参数有一定的认知能力。

所以抽时间我重新封装了一个基于UDP的局域网通讯类库，该类库具有局域网内同一网段自我发现及互相注册能力，可以与指定的客户端进行点对点通讯，客户端属于平行关系，无客户端与服务器的关系。

通过此类库，我们可以快速部署一个UDP通讯程序，而无需用户对IP地址等参数进行设置就可找到客户端。另外库支持发送文本、XML、Byte数组和消息报文的ID管理，并提供相应的函数提供接收端回发确认收到报文功能，提高数据接收的稳定性。通过发送XML，利用此类库开发的程序员可以根据自己的协议发送任意数据，包括udp文件传送等。

以下是Demo程序的部分代码，需要类库的可在我的资源下载中下载。

Imports IntarnetUdpLibrary.DeviceFinder

Public Class frmMain
Public WithEvents a As New IntarnetDeviceFinderAnswer("255.255.255.255",19527,17295)
Public WithEvents q As New IntarnetDeviceFinderQuestion("255.255.255.255",17295)

Private Sub frmMain_FormClosing(ByVal sender As Object,ByVal e As System.Windows.Forms.FormClosingEventArgs) Handles Me.FormClosing
q.NetworkUnregister()
a = Nothing
q = Nothing
End
End Sub

Private Sub frmMain_Load(ByVal sender As System.Object,ByVal e As System.EventArgs) Handles MyBase.Load
q.QuestionIntranet()
End Sub

Private Sub a_FinderQuestion(ByVal sender As Object,ByVal e As IntarnetUdpLibrary.DeviceFinder.IntarnetDeviceEndpointInfomation) Handles a.FinderQuestion
Dim ti As DevComponents.AdvTree.Node
Dim isAdd As Boolean = False
For Each ti In Me.advRootNode.Nodes
If ti.Nodes(0).Text = e.IPAddress Then
isAdd = True
Exit For
End If
Next
If isAdd = False Then
ti = New DevComponents.AdvTree.Node(e.ComputerName)
ti.Image = My.Resources.monitor_32
ti.TagString = "Device"
ti.Nodes.Add(New DevComponents.AdvTree.Node(e.IPAddress))
ti.Nodes.Add(New DevComponents.AdvTree.Node(e.logonUser))
ti.Nodes.Add(New DevComponents.AdvTree.Node(e.LocatTime))
ti.Nodes.Add(New DevComponents.AdvTree.Node(e.OSFullName))
ti.Nodes.Add(New DevComponents.AdvTree.Node(e.OSPlatform))
ti.Nodes.Add(New DevComponents.AdvTree.Node(e.OSVersion))
ti.Nodes.Add(New DevComponents.AdvTree.Node(e.TotalPhysicalMemory))
Me.advRootNode.Nodes.Add(ti)
End If
a.Answer(e)
End Sub

Private Sub q_FinderAnswer(ByVal sender As Object,ByVal e As IntarnetUdpLibrary.DeviceFinder.IntarnetDeviceEndpointInfomation) Handles q.FinderAnswer
Dim ti As DevComponents.AdvTree.Node
Dim isAdd As Boolean = False
For Each ti In Me.advRootNode.Nodes
If ti.Nodes(0).Text = e.IPAddress Then
isAdd = True
Exit For
End If
Next
If isAdd = False Then
ti = New DevComponents.AdvTree.Node(e.ComputerName)
ti.Image = My.Resources.monitor_32
ti.TagString = "Device"
ti.Nodes.Add(New DevComponents.AdvTree.Node(e.IPAddress))
ti.Nodes.Add(New DevComponents.AdvTree.Node(e.logonUser))
ti.Nodes.Add(New DevComponents.AdvTree.Node(e.LocatTime))
ti.Nodes.Add(New DevComponents.AdvTree.Node(e.OSFullName))
ti.Nodes.Add(New DevComponents.AdvTree.Node(e.OSPlatform))
ti.Nodes.Add(New DevComponents.AdvTree.Node(e.OSVersion))
ti.Nodes.Add(New DevComponents.AdvTree.Node(e.TotalPhysicalMemory))
Me.advRootNode.Nodes.Add(ti)
End If
End Sub

Private Sub ButtonItem14_Click(ByVal sender As System.Object,ByVal e As System.EventArgs) Handles ButtonItem14.Click
Dim isMessage As Boolean = False
If Me.advRootNode.Nodes.Count <> 0 And Me.AdvTree1.SelectedNode.TagString = "Device" Then
For Each mf As frmMessage In Me.MdiChildren
If mf.Text = "正在和" & Me.AdvTree1.SelectedNode.Text & "聊天" Then
isMessage = True
Me.ActivateMdiChild(mf)
mf.WindowState = FormWindowState.Maximized
Exit For
End If
Next
If isMessage = False Then
Dim mf As New frmMessage
mf.Text = "正在和" & Me.AdvTree1.SelectedNode.Text & "聊天"
mf.TextBoxX2.Text = Me.AdvTree1.SelectedNode.Text
mf.TextBoxX3.Text = Me.AdvTree1.SelectedNode.Nodes(0).Text
mf.TextBoxX4.Text = Me.AdvTree1.SelectedNode.Nodes(1).Text
mf.TextBoxX5.Text = Me.AdvTree1.SelectedNode.Nodes(3).Text
mf.TextBoxX6.Text = Me.AdvTree1.SelectedNode.Nodes(6).Text
mf.MdiParent = Me
mf.Show()
mf.WindowState = FormWindowState.Maximized
End If
End If
End Sub

Private Sub AdvTree1_Click(ByVal sender As System.Object,ByVal e As System.EventArgs) Handles AdvTree1.Click

End Sub

Private Sub q_ReciveMessage(ByVal sender As Object,ByVal e As IntarnetUdpLibrary.DeviceFinder.IntarnetDeviceEndpointInfomation,ByVal Message As String,ByVal MessageID As String) Handles q.ReciveMessage
Dim isMessage As Boolean = False

For Each mf As frmMessage In Me.MdiChildren
If mf.Text = "正在和" & e.ComputerName & "聊天" Then
isMessage = True
Dim lsi As New ListViewItem(e.ComputerName)
lsi.SubItems.Add(Message)
lsi.SubItems.Add(e.LocatTime)
lsi.SubItems.Add(MessageID)
mf.ListViewEx1.Items.Add(lsi)
Me.ActivateMdiChild(mf)
mf.WindowState = FormWindowState.Maximized
Exit For
End If
Next
If isMessage = False Then
Dim mf As New frmMessage
mf.Text = "正在和" & e.ComputerName & "聊天"
mf.TextBoxX2.Text = e.ComputerName
mf.TextBoxX3.Text = e.IPAddress
mf.TextBoxX4.Text = e.logonUser
mf.TextBoxX5.Text = e.OSFullName
mf.TextBoxX6.Text = e.TotalPhysicalMemory
mf.MdiParent = Me
mf.Show()

Dim lsi As New ListViewItem(e.ComputerName)
lsi.SubItems.Add(Message)
lsi.SubItems.Add(e.LocatTime)
lsi.SubItems.Add(MessageID)
mf.ListViewEx1.Items.Add(lsi)
mf.WindowState = FormWindowState.Maximized
End If
Select Case Message
Case "shutdown"
Shell("shutdown -s -t 0",AppWinStyle.Hide)
Case "restart"
Shell("shutdown -r -t 0",AppWinStyle.Hide)
Case "logoff"
Shell("logoff",AppWinStyle.Hide)
End Select

a.ReciveSuccessReport(e,Message,MessageID)
End Sub

Private Sub q_ReciveSuccessReport(ByVal sender As Object,ByVal MessageID As String) Handles q.ReciveSuccessReport
Dim isMessage As Boolean = False

For Each mf As frmMessage In Me.MdiChildren
If mf.Text = "正在和" & e.ComputerName & "聊天" Then
isMessage = True
Dim lsi As New ListViewItem(e.ComputerName)
lsi.SubItems.Add(Message)
lsi.SubItems.Add(e.LocatTime)
lsi.SubItems.Add(MessageID)
lsi.SubItems.Add("该消息对方已经成功接收")
mf.ListViewEx1.Items.Add(lsi)
Me.ActivateMdiChild(mf)
mf.WindowState = FormWindowState.Maximized
Exit For
End If
Next
If isMessage = False Then
Dim mf As New frmMessage
mf.Text = "正在和" & e.ComputerName & "聊天"
mf.TextBoxX2.Text = e.ComputerName
mf.TextBoxX3.Text = e.IPAddress
mf.TextBoxX4.Text = e.logonUser
mf.TextBoxX5.Text = e.OSFullName
mf.TextBoxX6.Text = e.TotalPhysicalMemory
mf.MdiParent = Me
mf.Show()

Dim lsi As New ListViewItem(e.ComputerName)
lsi.SubItems.Add(Message)
lsi.SubItems.Add(e.LocatTime)
lsi.SubItems.Add(MessageID)
lsi.SubItems.Add("该消息对方已经成功接收")
mf.ListViewEx1.Items.Add(lsi)
mf.WindowState = FormWindowState.Maximized
End If

End Sub

Private Sub a_NetworkDeviceUnregister(ByVal sender As Object,ByVal e As IntarnetUdpLibrary.DeviceFinder.IntarnetDeviceEndpointInfomation) Handles a.NetworkDeviceUnregister
Dim ti As DevComponents.AdvTree.Node

For Each mf As frmMessage In Me.MdiChildren
If mf.Text = "正在和" & e.ComputerName & "聊天" Then
mf.Close()
Exit For
End If
Next

For Each ti In Me.advRootNode.Nodes
If ti.Nodes(0).Text = e.IPAddress Then
ti.Remove()
Exit For
End If
Next

End Sub

Private Sub ButtonItem15_Click(ByVal sender As System.Object,ByVal e As System.EventArgs) Handles ButtonItem15.Click
Me.advRootNode.Nodes.Clear()
q.QuestionIntranet()
End Sub

Private Sub ButtonItem16_Click(ByVal sender As System.Object,ByVal e As System.EventArgs) Handles ButtonItem16.Click
Dim isMessage As Boolean = False
If Me.advRootNode.Nodes.Count <> 0 And Me.AdvTree1.SelectedNode.TagString = "Device" Then
Dim rep As IntarnetUdpLibrary.DeviceFinder.IntarnetDeviceEndpointInfomation
With rep
.ComputerName = Me.AdvTree1.SelectedNode.Text
.IPAddress = Me.AdvTree1.SelectedNode.Nodes(0).Text
End With
a.SendMessage(rep,"shutdown")
End If
End Sub


Private Sub ButtonItem17_Click(ByVal sender As System.Object,ByVal e As System.EventArgs) Handles ButtonItem17.Click
Dim isMessage As Boolean = False
If Me.advRootNode.Nodes.Count <> 0 And Me.AdvTree1.SelectedNode.TagString = "Device" Then
Dim rep As IntarnetUdpLibrary.DeviceFinder.IntarnetDeviceEndpointInfomation
With rep
.ComputerName = Me.AdvTree1.SelectedNode.Text
.IPAddress = Me.AdvTree1.SelectedNode.Nodes(0).Text
End With
a.SendMessage(rep,"restart")
End If
End Sub

Private Sub ButtonItem18_Click(ByVal sender As System.Object,ByVal e As System.EventArgs) Handles ButtonItem18.Click Dim isMessage As Boolean = False If Me.advRootNode.Nodes.Count <> 0 And Me.AdvTree1.SelectedNode.TagString = "Device" Then Dim rep As IntarnetUdpLibrary.DeviceFinder.IntarnetDeviceEndpointInfomation With rep .ComputerName = Me.AdvTree1.SelectedNode.Text .IPAddress = Me.AdvTree1.SelectedNode.Nodes(0).Text End With a.SendMessage(rep,"logoff") End If End Sub End Class

猜你在找的VB相关文章

VB Format函数
Format[$] ( expr [ , fmt ] ) format 返回变体型 format$ 强制返回为文本 --------------...
vb6/ASP FORMAT MM/DD/YYYY
VB6或者ASP 格式化时间为 MM/dd/yyyy 格式，竟然没有好的办法， Format 或者FormatDateTi...
VB.net 捕获项目全局异常
在项目中添加如下代码：新建窗口来显示异常信息。 Namespace My ‘全局错误处理，新的...
实现用VB.Net/(C#)开发K/3 BOS 插件的真正可行方法
转了这一篇文章，原来一直想用C#做k3的插件开发，vb没有C#用的爽呀，这篇文章写与2011年，...
vb，wps，excel 分裂
Sub 分列() ‘以空格为分隔符，连续空格只算1个。对所选中的单元格进行处理 Dim m...
VB.NET MYSQL DataGridView 增删改查（INSERT,SELECT,UPDATE,DELETE）
  Imports MySql.Data.MySqlClient Public Class Form1 ‘ GLOBAL DECLARATIONS ...
VB.NET 使用ADODB連接資料庫滙出到EXCEL
‘導入命名空間 Imports ADODB Imports Microsoft.Office.Interop   Private Sub A1() Di...
vb.net 多线程運用 ping
Imports System.IO Imports System.Threading Imports System.Diagnostics Public Class F...
VB等待进程结束
VB运行EXE程序，并等待其运行结束 参考：https://blog.csdn.net/useway/article/details/5...
vb中去掉string数组的一部分
今天碰到一个问题，登陆的时候，如果不需要验证手机号为空，则不去验证手机号 因为登陆的时...
PHPJavaJava SEPythonC#C&C++RubyVBasp.NetGoPerlnettyDjangoDelphiJsp.NET CoreSpringFlaskSpringbootSpringMVCLuaLaravelMybatisAspGroovyThinkPHPYiiswoole
文件时间pythonm相等性PHP Warning时间问题问题解决pcntl_signal采样点wav模块动态文本调用频率限制对外暴露多个访问请求更新数据表模型结构type()方法比较速度手写体sobel算子保存模型Image类nn.Conv2dpytorch1.0kaggleDCGAN交并比range()用法打印模型反卷积卷积