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vb.net - tcpclient.networkstream help

  • 09-12-2008 10:58pm
    #1
    logic
    Registered Users, Registered Users 2 Posts: 938 ✭✭✭


    I'm trying to read data, send data, read data again from telnet session. The first reading comes in ok but the second doesn't. I can't seem to see what I'm doing wrong. I'm just learning this stuff btw,
    
        Dim tcpClient As New System.Net.Sockets.TcpClient()
        tcpClient.Connect(txtip.Text, txtport.Text)
        Dim networkStream As System.Net.Sockets.NetworkStream = tcpClient.GetStream()
        If networkStream.CanWrite And networkStream.CanRead Then

            Dim bytes(tcpClient.ReceiveBufferSize) As Byte
            Dim sendBytes As [Byte]()
            Dim returndata As String = ""

            '***read the data from the server in to the string returndata
            networkStream.Read(bytes, 0, CInt(tcpClient.ReceiveBufferSize))
            returndata = System.Text.Encoding.ASCII.GetString(bytes)


            networkStream.Flush() '***clear off the current data

            '***send data "admin" to the server
            sendBytes = System.Text.Encoding.ASCII.GetBytes("admin")
            networkStream.Write(sendBytes, 0, sendBytes.Length)

            networkStream.Flush() '***clear off the current data

            '***read the data from the server in to the string returndata
            networkStream.Read(bytes, 0, CInt(tcpClient.ReceiveBufferSize))
            returndata = System.Text.Encoding.ASCII.GetString(bytes)


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