VB.NET Client Server Simple Application

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Hello I'm starting to learn Server Client Application in VB.NET. This tutorial is what I have searched https://www.youtube.com/watch?v=MSiBbtxWpI8[^]

But my ReadLine is paused when opening the client application

VB

Private Sub Listening()
    Do Until Not IsListening
        If Server.Pending Then
            Client = Server.AcceptTcpClient
            ClientData = New IO.StreamReader(Client.GetStream)
        End If
        Try
            RaiseEvent MessageReceived(Me, ClientData.ReadLine) 'PAUSE
        Catch ex As Exception
            RaiseEvent MessageReceived(Me, "Error")
        End Try
        Threading.Thread.Sleep(100)
    Loop
End Sub

First, I have tried reworking this using Timer or Backgroundworker same happens. So I copy the code shown on tutorial but unable to run properly.

Please Help.. Thanks

Posted 4-Sep-14 6:03am

hansoctantan

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OriginalGriff · Accepted Answer · 2014-09-04T06:10:00

Solution 1

Well yes - it will do.
ReadLine is what is called a "blocking" operation: it does not return until the stream provides a complete line of data (terminated by a newline) or it reaches the end of the stream.
If ReadLine hangs, then it is waiting for the other end of the TCP connection to send a new line character or sequence.

Check the other end first: if that looks OK, try reading character by character and see if you get anything at all...

Posted 4-Sep-14 6:10am

OriginalGriff

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hansoctantan 4-Sep-14 13:33pm

thank you very much, the problem is its not the server its the client
DataStream.Write("OK")
DataStream.Flush()
Don't have a vbnewLine added on the Write command

OriginalGriff 4-Sep-14 14:03pm

You're welcome!

VB.NET Client Server Simple Application

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VB.NET Client Server Simple Application

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