SDL Jetzt erst recht!
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218
SDL/cServerClient.vb
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218
SDL/cServerClient.vb
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Imports System.Net, System.Net.Sockets
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Imports System.Text
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Imports System.Threading
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Public Class cServerClient
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Dim clientSocket As Socket
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Dim byteData(1023) As Byte
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Dim doThis As String
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Public status As String = "begin"
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' Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
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' begin()
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' End Sub
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Public Event FunctionFinished(ByVal sender As Object, ByVal e As FunctionFinishedArgs)
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Public Sub begin(ip, doThis_tmp)
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doThis = doThis_tmp
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Dim timeOut As Integer = 60
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Select Case doThis
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Case "test" : timeOut = 5 ' nach 5 Sekunden wird abgebrochen
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Case "FSSAtlasStart" : timeOut = 120 ' nach 120 Sekunden wird abgebrochen
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Case "initAufschubkonten" : timeOut = 60 ' nach 60 Sekunden wird abgebrochen
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End Select
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'Ein Thread kontrolliert, ob die Funktion nach einer gewissen Zeit noch läuft und beendet diese ggf.
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Dim st As New Thread(AddressOf stopThread)
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st.IsBackground = True
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Dim param_obj(1) As Object
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'Übergabeparameter des 2. Threads
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param_obj(0) = timeOut
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st.Start(param_obj)
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clientSocket = New Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp)
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Dim ipAddress As IPAddress = ipAddress.Parse(ip)
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' Dim ipAddress As IPAddress = ipAddress.Parse("192.168.0.90")
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Dim ipEndPoint As IPEndPoint = New IPEndPoint(ipAddress, 8800)
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clientSocket.BeginConnect(ipEndPoint, New AsyncCallback(AddressOf OnConnect), Nothing)
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status = "beginConnect"
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' endconnect(clientSocket)
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End Sub
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Public Sub waitTillFinished()
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While Not (status = "TaskError" Or status = "TaskSuccess")
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'wait
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End While
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'Return True
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End Sub
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Private Sub OnConnect(ByVal ar As IAsyncResult)
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Try
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clientSocket.EndConnect(ar)
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clientSocket.BeginReceive(byteData, 0, byteData.Length, SocketFlags.None, _
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New AsyncCallback(AddressOf OnRecieve), clientSocket)
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Catch ex As Exception
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' MsgBox("Verbindung zum Server konnte nicht aufgebaut werden!")
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End Try
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End Sub
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Private Sub OnSend(ByVal ar As IAsyncResult)
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Dim client As Socket = ar.AsyncState
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client.EndSend(ar)
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End Sub
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Private Sub Send(ByVal msg As String, ByVal client As Socket)
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Dim sendBytes As Byte() = Encoding.BigEndianUnicode.GetBytes(msg)
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client.BeginSend(sendBytes, 0, sendBytes.Length, SocketFlags.None, New AsyncCallback(AddressOf OnSend), client)
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End Sub
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Public Function ByteArrayToTextString(ByRef Barr() As Byte) As String
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Dim enc As System.Text.Encoding = Encoding.BigEndianUnicode
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Return enc.GetString(Barr)
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End Function
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Private Sub OnRecieve(ByVal ar As IAsyncResult)
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Try
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Dim client As Socket = ar.AsyncState
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client.EndReceive(ar)
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Dim bytesRec As Byte() = byteData
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Dim message As String = Encoding.BigEndianUnicode.GetString(bytesRec)
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' MsgBox("FROM SERVER: " & message)
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Dim b(1023) As Byte
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' MsgBox("SERVER RECIEVE: " & Encoding.BigEndianUnicode.GetString(b))
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byteData = b
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Read(message)
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clientSocket.BeginReceive(byteData, 0, byteData.Length, SocketFlags.None, _
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New AsyncCallback(AddressOf OnRecieve), clientSocket)
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Catch ex As Exception
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' MsgBox("Verbindung zum Server wurde unterbrochen!")
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End Try
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End Sub
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Delegate Sub _Read(ByVal msg As String)
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Private Sub Read(ByVal msg As String)
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If frmMain.InvokeRequired Then
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frmMain.Invoke(New _Read(AddressOf Read), msg)
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Exit Sub
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End If
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'frmMain.icoVERAGMonitoring.Visible = False
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'if richtige nsachricht
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' Dim asciis As Byte() = Encoding.BigEndianUnicode.GetBytes(msg)
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' Dim a As Char = msg(msg.Length - 1)
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' msg = msg.Replace(a, "")
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' MsgBox(msg.Length)
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' MsgBox(msg(msg.Length - 1))
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' MsgBox(msg(msg.Length - 1))
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' MsgBox(Asc(msg(msg.Length - 1)))
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' MsgBox(Asc(msg(msg.Length - 2)))
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msg = msg.Replace(Convert.ToChar(0), "")
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Try
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' MsgBox("-" & msg & "-" & vbNewLine & "ConSuccess" & "-")
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If msg = "ConSuccess" Then
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status = "ConSuccess"
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Select Case doThis
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Case "test"
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Send("test", clientSocket)
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status = "sendTask"
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Case "FSSAtlasStart"
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Send("FSSAtlasStart", clientSocket)
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status = "sendTask"
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Case "initAufschubkonten"
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Send("initAufschubkonten", clientSocket)
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status = "sendTask"
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End Select
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' MsgBox("!!!!!ConSuccess --> initAufschubkonten")
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' Send("FSSAtlasStart", clientSocket)
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'Send("test", clientSocket)
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'Send("initAufschubkonten", clientSocket)
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ElseIf msg = "Task successful" Then
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status = "TaskSuccess"
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clientSocket.Disconnect(False)
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clientSocket.Shutdown(SocketShutdown.Both)
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clientSocket.Close()
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'endconnect(clientSocket)'geht ned
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' MsgBox("Task erfolgreich!", vbSystemModal, doThis)
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RaiseEvent FunctionFinished(Me, New FunctionFinishedArgs(FunctionFinishedArgs.EventResult.OK, "Task erfolgreich!"))
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ElseIf msg = "Task not found" Then
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MsgBox("SERVERERROR: Der Dienst wurde nicht gefunden!", vbSystemModal, "FSSAtlas")
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status = "TaskError"
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RaiseEvent FunctionFinished(Me, New FunctionFinishedArgs(FunctionFinishedArgs.EventResult.ERR, "SERVERERROR: Der Dienst wurde nicht gefunden!"))
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ElseIf msg = "Task inactive" Then
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MsgBox("SERVERERROR: Der Dienste ist nicht aktiv!", vbSystemModal, "FSSAtlas")
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status = "TaskError"
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RaiseEvent FunctionFinished(Me, New FunctionFinishedArgs(FunctionFinishedArgs.EventResult.ERR, "SERVERERROR: Der Dienste ist nicht aktiv!"))
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ElseIf msg = "Task timeout" Then
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MsgBox("SERVERERROR: Der Dienst wurde wegen einer Zeitüberschreitung abgebrochen!", vbSystemModal, "FSSAtlas")
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status = "TaskError"
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RaiseEvent FunctionFinished(Me, New FunctionFinishedArgs(FunctionFinishedArgs.EventResult.ERR, "SERVERERROR: Der Dienst wurde wegen einer Zeitüberschreitung abgebrochen!"))
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ElseIf msg = "Task error" Then
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MsgBox("SERVERERROR: Server-Fehler!", vbSystemModal, "FSSAtlas")
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status = "TaskError"
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RaiseEvent FunctionFinished(Me, New FunctionFinishedArgs(FunctionFinishedArgs.EventResult.ERR, "SERVERERROR: Server-Fehler!"))
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Else
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MsgBox("SERVER_NACHRICHT NICHT VERSTANDEN: " & msg, vbSystemModal)
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status = "TaskError"
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RaiseEvent FunctionFinished(Me, New FunctionFinishedArgs(FunctionFinishedArgs.EventResult.ERR, "SERVER_NACHRICHT NICHT VERSTANDEN: " & msg))
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clientSocket.Shutdown(SocketShutdown.Both)
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clientSocket.Close()
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End If
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Catch ex As Exception
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MsgBox("Verbindungs-Fehler beim Senden", vbSystemModal)
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status = "TaskError"
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RaiseEvent FunctionFinished(Me, New FunctionFinishedArgs(FunctionFinishedArgs.EventResult.ERR, "Verbindungs-Fehler beim Senden"))
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clientSocket.Close()
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End Try
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' byteData = Encoding.BigEndianUnicode.GetBytes("")
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End Sub
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Sub stopThread(param_obj As Object) 'Stoppt einen Hauptthread nach einer gewissen Anzahl von Sekunden; Übergabeparameter: Object { Tread, clientSocket, SekundenToTimeout }
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Thread.Sleep(param_obj(0) * 1000) ' Hier wird soviele Senkunden gewartet, wie in den Übergabeparametern definiert wurde.
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If status = "TaskError" Or status = "TaskSuccess" Then Exit Sub
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status = "TaskError"
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Try
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clientSocket.Disconnect(False)
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clientSocket.Shutdown(SocketShutdown.Both)
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clientSocket.Close()
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Catch ex As Exception
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MsgBox(ex.Message)
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End Try
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RaiseEvent FunctionFinished(Me, New FunctionFinishedArgs(FunctionFinishedArgs.EventResult.ERR, "Task wurde aufgrund eines Timeouts vom Client abgebrochen."))
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MsgBox("ERROR: Task wurde aufgrund eines Timeouts vom Client abgebrochen.") 'Log-Mittelung
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End Sub
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End Class
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Public Class FunctionFinishedArgs
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Inherits EventArgs
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'das was man später unter e sehen kann
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Public Result As EventResult
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'hier - als Beispiel - einfach eine Enum
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Public Enum EventResult
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OK
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ERR
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End Enum
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Public Message As String
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'Zum übergeben der Parameter
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Public Sub New(ByVal r As EventResult, m As String)
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Result = r
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Message = m
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End Sub
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End Class
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