水如烟

                 顺其自然,水到渠成 LzmTW

文或代码皆是面向初学者.我是爱好者,也是初学者.那些"文章",只按自己理解写,我是不知术语名词的.所以只供参考,也仅供参考.

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LzmTW.uRemoting.Dll应用举例:建立一个时间服务器

Posted on 2005-12-10 16:15  水如烟(LzmTW)  阅读(779)  评论(1编辑  收藏  举报
Author:水如烟

示图:


首先说一下,利用这个Dll做一个聊天程序是很方便的,通过设置ServiceInformation的CludeMachines和NotCludeMachines可以实现私聊和群聊。
这个工程有四个项目,Base.Dll,Server.Dll,Host.exe,Client.exe

项目Base提供公用信息,Client和Host都引用到。两个文件:MessageCommon.vb,MyServiceInformations.vb
文件MyServiceInformations.vb,配置信息
Imports LzmTW.uRemoting

Public Class MyServiceInformations
    
Inherits ServiceInformationCollectionBase
    
Public Overrides Sub Initialize()
        
Dim info As ServiceInformation

        info 
= New ServiceInformation
        
With info
            
With .Channel
                .ChnlType 
= ChannelType.TcpChannel
                .FilterLevel 
= Runtime.Serialization.Formatters.TypeFilterLevel.Full
                .Port 
= "8000"
                .PortName 
= "MyTimer"
                .ServerMachine 
= "FK-A09-05"
            
End With
            
With .Service
                .Mode 
= Runtime.Remoting.WellKnownObjectMode.Singleton
                .ServerUri 
= "MyTimerServerUri"
                .ServiceName 
= "MyTimer"
            
End With
        
End With
        
Me.Add(info)

    
End Sub

End Class
文件MessageCommon.vb,用来互通消息
Public Class MessageCommon
    
Inherits LzmTW.uRemoting.MessageBase
    
Sub New(ByVal text As String)
        
Me.Name = "一般会话"
        
Me.Body = text
    
End Sub

End Class

MyServiceInformations类在服务端(即宿主机)一经运行,即生成ServiceInformation.bin文件,当然对它可以编辑。部署客户端时将此文件附到发布包即可。如果服务端的地址改变了,也可以将其重新编辑。这里对这个二进制文件的编辑操作我就省略了,利用上面这个类就可以编辑信息的,只是没给编辑界面。

项目Server供Host引用,包含两个文件:MessageTimer.vb,MyTimer.vb
MessageTimer.vb,发出服务器时间
Public Class MessageMyTimer
    
Inherits LzmTW.uRemoting.MessageBase
    
Sub New()
        
Me.Name = "时间服务"
        
Me.Body = Now
    
End Sub

End Class

MyTimer.vb
Imports LzmTW.uRemoting
Public Class MyTimer
    
Inherits ServiceBase
    
Dim m_sendEventTimer As System.Threading.Timer

    
Sub New()
    
End Sub


    
Public Sub BeginServer()
        
Dim timerDelegate As System.Threading.TimerCallback = AddressOf SendTimeToClients
        m_sendEventTimer 
= New System.Threading.Timer(timerDelegate, Nothing5001000)
    
End Sub

    
Private Sub SendTimeToClients(ByVal stateInfo As Object)
        
Me.OnSendMessage(NothingNew MessageMyTimer)
    
End Sub


    
Public Overloads Function InitializeLifetimeService() As Object
        
Return Nothing
    
End Function


    
Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
        
If disposing Then
            m_sendEventTimer.Dispose()
        
End If
    
End Sub

End Class


CLient项目,只有一个文件ClientForm.vb
Imports LzmTW.uRemoting
Public Class ClientForm
    
Inherits System.Windows.Forms.Form

Windows 窗体设计器生成的代码

    
Private WithEvents LocalTimer As New Windows.Forms.Timer
    
Private TimerServiceInfo As ServiceInformation
    
Private ClientFactory As ClientFactory
    
Private MessageIndex As Integer

    
Private ServerTime As Date

    
Private Sub ClientForm_Load(ByVal sender As ObjectByVal e As System.EventArgs) Handles MyBase.Load
        LocalTimer.Interval 
= 1000
        LocalTimer.Start()
    
End Sub


    
Private Sub LocalTimer_Tick(ByVal sender As ObjectByVal e As System.EventArgs) Handles LocalTimer.Tick
        
Me.LocalTimerLabel.Text = String.Format("本地时间:{0}", Now)
    
End Sub


    
Private Sub LinkServerButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles LinkServerButton.Click
        
If Not ClientFactory Is Nothing Then Exit Sub

        
Dim ServiceInfos As New Base.MyServiceInformations
        TimerServiceInfo 
= ServiceInfos("MyTimer")

        
'测试远程服务是否启动
        Dim tmpService As IService = ServicesFactory.ActivatorGetObject(TimerServiceInfo)
        
Try
            Console.WriteLine(tmpService.Information.ClientServerUri)
            ClientFactory 
= New ClientFactory
            
AddHandler ClientFactory.ServiceMessageArrived, AddressOf OnMessageArrived
            ClientFactory.ServiceAdd(TimerServiceInfo)
            ClientFactory.ServiceEventConnect(TimerServiceInfo.Service.ServiceName)
            
Me.AddListViewItem("本地""本地操作""连接时间服务器成功")
            tmpService 
= Nothing
        
Catch ex As Exception
            
Me.AddListViewItem("本地""本地操作""连接时间服务器失败")
        
End Try
    
End Sub


    
Private Sub TimingButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TimingButton.Click
        
If ClientFactory Is Nothing Then Exit Sub
        
If Math.Abs(Now.Subtract(Me.ServerTime).TotalSeconds) > 1 Then
            Microsoft.VisualBasic.TimeOfDay 
= Me.ServerTime
            
If Math.Abs(Now.Subtract(Me.ServerTime).TotalSeconds) > 1 Then
                
Me.AddListViewItem("本地""本地操作""同步时间失败")
            
Else
                
Me.AddListViewItem("本地""本地操作""同步时间成功")
            
End If
        
End If
    
End Sub


    
Private Sub SendMessageButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles SendMessageButton.Click
        
If ClientFactory Is Nothing Then Exit Sub
        ClientFactory.MessageSendToServer(TimerServiceInfo.Service.ServiceName, 
NothingNew Base.MessageCommon(Me.MessageTextBox.Text))
        
Me.AddListViewItem("本地""会话发送"Me.MessageTextBox.Text)
    
End Sub


    
Private Sub OnMessageArrived(ByVal sender As ObjectByVal arg As IMessage)
        
If arg.Name = "时间服务" Then
            
Me.ServerTime = CType(arg.Body, Date)
            
Me.ServerTimeLabel.Text = String.Format("服务器时间:{0}", arg.Body)
        
Else
            
With arg
                
Me.AddListViewItem(.Machine, .Name, .Body)
            
End With
        
End If
    
End Sub


    
Private Sub AddListViewItem(ByVal Address As StringByVal SourceClass As StringByVal Text As String)
        MessageIndex 
+= 1
        
Dim Items(3As String
        Items(
0= MessageIndex
        Items(
1= Address
        Items(
2= SourceClass
        Items(
3= Text
        
Me.MessageListView.Items.Insert(0New Windows.Forms.ListViewItem(Items))
    
End Sub

End Class

Host项目也只有一个文件,ServerForm.vb
Imports LzmTW.uRemoting
Public Class ServerForm
    
Inherits System.Windows.Forms.Form

Windows 窗体设计器生成的代码

    
Private TimerServiceInfo As ServiceInformation
    
Private TimerService As Server.MyTimer
    
Private ServiceObj As Runtime.Remoting.ObjRef
    
Private ClientFactory As ClientFactory
    
Private MessageIndex As Integer

    
Private Sub StartServerButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles StartServerButton.Click
        
If Not ClientFactory Is Nothing Then Exit Sub

        TimerService 
= New Server.MyTimer
        
Dim ServiceInfos As New Base.MyServiceInformations
        TimerServiceInfo 
= ServiceInfos("MyTimer")
        TimerService.Information 
= TimerServiceInfo
        ServiceObj 
= ServicesFactory.ServiceMarshal(TimerService)

        
'启动TimerService的BeginServer
        ClientFactory = New ClientFactory
        
AddHandler ClientFactory.ServiceMessageArrived, AddressOf OnMessageArrived
        ClientFactory.ServiceAdd(TimerServiceInfo)
        ClientFactory.ServiceEventConnect(TimerServiceInfo.Service.ServiceName)
        
CType(ClientFactory.Service(TimerServiceInfo.Service.ServiceName), Server.MyTimer).BeginServer()

        
Me.AddListViewItem("本地""系统操作""启动时间服务")

    
End Sub


    
Private Sub StopServerButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles StopServerButton.Click
        
If ClientFactory Is Nothing Then Exit Sub
        ClientFactory.MessageSendToServer(TimerServiceInfo.Service.ServiceName, 
NothingNew Base.MessageCommon("服务将要停止"))
        TimerService.Dispose()
        ClientFactory.ServiceRemove(TimerServiceInfo.Service.ServiceName)
        
RemoveHandler ClientFactory.ServiceMessageArrived, AddressOf OnMessageArrived
        ClientFactory 
= Nothing

        ServicesFactory.Services.Disconnect(TimerService)
        ServicesFactory.ChannelUnregister(TimerServiceInfo.Channel.PortName)
        ServiceObj 
= Nothing
        TimerService 
= Nothing

        
Me.TimerLabel.Text = "时间:"
        
Me.AddListViewItem("本地""系统操作""停止时间服务")
    
End Sub


    
Private Sub SendMessageButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles SendMessageButton.Click
        
If ClientFactory Is Nothing Then Exit Sub
        ClientFactory.MessageSendToServer(TimerServiceInfo.Service.ServiceName, 
NothingNew Base.MessageCommon(Me.MessageTextBox.Text))
        
Me.AddListViewItem("本地""会话发送"Me.MessageTextBox.Text)
    
End Sub


    
Private Sub OnMessageArrived(ByVal sender As ObjectByVal arg As IMessage)
        
If arg.Name = "时间服务" Then
            
Me.TimerLabel.Text = String.Format("时间:{0}", arg.Body)
        
Else
            
With arg
                
Me.AddListViewItem(.Machine, .Name, .Body)
            
End With
        
End If
    
End Sub


    
Private Sub AddListViewItem(ByVal Address As StringByVal SourceClass As StringByVal Text As String)
        MessageIndex 
+= 1
        
Dim Items(3As String
        Items(
0= MessageIndex
        Items(
1= Address
        Items(
2= SourceClass
        Items(
3= Text
        
Me.MessageListView.BeginUpdate()
        
Me.MessageListView.Items.Insert(0New Windows.Forms.ListViewItem(Items))
        
Me.MessageListView.EndUpdate()
    
End Sub

End Class