Member Avatar for Galbatorix

hi guys,
am pretty new to socket programming in vb.net . i am used to the winsock control in vb6 but it seems that vb.net has a difft approach as i could not find the control. Could someone please explain to me about sockets

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Dani AI

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— VB.NET does not ship the old VB6 Winsock control. The .NET way is to use the System.Net.Sockets classes: TcpClient/TcpListener for simple TCP streams, Socket for lower-level control (and UdpClient for UDP). was right to point toward Microsoft docs, and ’s winsock-style wrapper can help if you want a VB6-like API while you port. (learn.microsoft.com)

A minimal, modern pattern is async/await with TcpListener and NetworkStream. This keeps the UI responsive and scales better than blocking calls. Example server (fire-and-forget per connection; add cancellation in production):

Imports System.Net
Imports System.Net.Sockets
Imports System.Text
Imports System.Threading.Tasks

Async Function RunServerAsync(port As Integer) As Task
    Dim listener = New TcpListener(IPAddress.Any, port)
    listener.Start()
    Try
        While True
            Dim client = Await listener.AcceptTcpClientAsync()
            _ = HandleClientAsync(client) ' handle concurrently
        End While
    Finally
        listener.Stop()
    End Try
End Function

Async Function HandleClientAsync(client As TcpClient) As Task
    Using client
        Dim stream = client.GetStream()
        Dim buffer(4095) As Byte
        Dim read = Await stream.ReadAsync(buffer, 0, buffer.Length)
        Dim text = Encoding.UTF8.GetString(buffer, 0, read)
        Dim reply = Encoding.UTF8.GetBytes("ACK: " & text)
        Await stream.WriteAsync(reply, 0, reply.Length)
    End Using
End Function

For a client, ConnectAsync + GetStream + ReadAsync/WriteAsync is the same pattern (use known encoding and a framing strategy — length prefix or delimiter). The async model and Task-based API are the recommended approach in modern VB.NET. (learn.microsoft.com)

Troubleshooting notes: don’t block the UI thread, catch SocketException and inspect ErrorCode, check OS firewall and that the port isn’t already bound, handle partial reads (stream framing), dispose sockets/streams, and set Socket.NoDelay = True if you need low-latency small packets. Use UdpClient for datagrams. For production add logging, timeouts, and CancellationToken support. (learn.microsoft.com)

See also: Use TcpClient and TcpListener, TcpClient API, Async/Await (Visual Basic).

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Member Avatar for debasisdas

You need to read .

Member Avatar for Galbatorix

thanks man

Member Avatar for thatscrap12543

There is an alternative. This is something that is based of winsock for visual basic 6.0, but is for vb.net.

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