Socket programming to monitor remote machine

[Sivakumar282000]

Hi All,

Problem statement - Remote monitoring on virtual machine(virtual box) not working and on physical machine taking time to get the output or sometimes not responding.

Setup

Monitor process,service,HD

connection on port 8888

It is one to one connection between server and client and there is no other device in the network.

Code

Client

Private Sub btnConnect_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnConnect.Click
Try
If (btnConnect.Text = "Connect") Then
btnConnect.Text = "Disconnect"
clientSocket = New System.Net.Sockets.TcpClient()

Label1.Text = "Client Socket Program - Connecting to Server ..."
clientSocket.Connect(txtIP.Text, txtPort.Text)
Label1.Text = "Client Socket Program - Server Connected ..."

Else
btnConnect.Text = "Connect"

Call SendData("Disconnect$")
'clientSocket.GetStream.Close()
clientSocket.Client.Disconnect(True)

clientSocket.Close()
End If

Catch ex As Exception
msg("Connect: " & Err.Description)
End Try
End Sub

Private Sub SendData(ByVal strData As String)
Try
serverStream = clientSocket.GetStream()
Dim outStream As Byte() = System.Text.Encoding.ASCII.GetBytes(strData)
serverStream.Write(outStream, 0, outStream.Length)
serverStream.Flush()

'Dim inStream(10024) As Byte
Dim inStream(65536) As Byte
serverStream.Read(inStream, 0, CInt(clientSocket.ReceiveBufferSize))
Dim returndata As String =
System.Text.Encoding.ASCII.GetString(inStream)
msg("Data from Server : " + returndata)

Catch ex As Exception
MsgBox(ex.Message, MsgBoxStyle.Exclamation, "Error")
End Try
End Sub


Server

Public Sub startClient(ByVal inClientSocket As TcpClient, ByVal clineNo As String)
Try
Me.clientSocket = inClientSocket
Me.clNo = clineNo
ctThread = New Threading.Thread(AddressOf doChat)
ctThread.Start()

Catch ex As Exception
MsgBox(ex.Message, MsgBoxStyle.Exclamation, "Error")
End Try
End Sub

Private Sub doChat()
Try
Dim requestCount As Integer
Dim bytesFrom(65536) As Byte
'Dim dataFromClient As String
Dim sendBytes As [Byte]()
Dim serverResponse As String
Dim rCount As String
requestCount = 0
Dim bolLoop As Boolean = True

While (bolLoop)
Try
requestCount = requestCount + 1
Dim dataFromClient As String
Dim networkStream As NetworkStream = clientSocket.GetStream()
networkStream.Read(bytesFrom, 0, CInt(clientSocket.ReceiveBufferSize))
dataFromClient = System.Text.Encoding.ASCII.GetString(bytesFrom)
dataFromClient = dataFromClient.Substring(0, dataFromClient.IndexOf("$"))
msg("From client-" + clNo + dataFromClient)
rCount = Convert.ToString(requestCount)
serverResponse = "Server to clinet(" + clNo + ") " + rCount
sendBytes = Encoding.ASCII.GetBytes(serverResponse)
networkStream.Write(sendBytes, 0, sendBytes.Length)
networkStream.Flush()
msg(serverResponse)

If (dataFromClient.Trim = "Disconnect") Then
bolLoop = False
clientSocket.GetStream.Close()
'ctThread.Abort()
'Exit While
End If

Array.Clear(bytesFrom, 0, bytesFrom.Length)

Catch ex As Exception
'MsgBox(ex.ToString)
bolLoop = False
'clientSocket.GetStream.Close()
End Try
End While

'Dim intID As Integer = ctThread.ManagedThreadId
'ctThread.Abort(intID)

Catch ex As Exception
MsgBox(ex.Message, MsgBoxStyle.Exclamation, "Error")
End Try
End Sub
End Class


Please help as i feel connection is not reliable.


Regards,

Siva Kumar




Siva

Continue reading...