Geek Answers Handbook

Can TCPClient be used without a network card?

I use TCPClientand TCPListenerto send data between applications running on the same computer. I am targeting Framework 4.5, so applications run on Windows Vista SP2 and higher, if I'm not mistaken. I use very simple code for this:

Customer:

 Try
    Using c = New Net.Sockets.TcpClient()
        c.Connect("localhost", 7643)
        If c.Connected Then

            Dim Specs As New List(Of Spectrum)
            ' Generating some data here to send

            Using stream = c.GetStream
                Dim xml As New Xml.Serialization.XmlSerializer(GetType(List(Of Spectrum)))
                xml.Serialize(stream, specs)
            End Using
        End If
    End Using
Catch sEx As Net.Sockets.SocketException
    MessageBox.Show("Could not send the data." & vbCrLf & _
                    "This can have multiple reasons:" & vbCrLf & _
                    "(i) The receiver is not running" & vbCrLf & _
                    "(ii) A firewall is blocking the connection")
Catch ex As Exception
    MessageBox.Show("An unexpected exception occured while sending the data: " & vbCrLf & _
                    ex.Message)
End Try

Server:

Private Async Sub DoListen()
    Do
        Dim client = Await datagrabber.AcceptTcpClientAsync
        If client IsNot Nothing AndAlso client.Connected Then
            Dim t = Task.Run(Sub() HandleClient(client, Date.Now))
        End If
    Loop
End Sub

Private Sub HandleClient(client As Net.Sockets.TcpClient)
    Dim specs As New List(Of RelaxIS_Shared.CSSpectrum)
    Using stream = client.GetStream
        Dim ser As New System.Xml.Serialization.XmlSerializer(GetType(List(Of RelaxIS_Shared.CSSpectrum)))
        specs = CType(ser.Deserialize(stream), List(Of RelaxIS_Shared.CSSpectrum))
        client.Close()
    End Using

    ' Do stuff with data
End Sub

This works well, but I started wondering if this is really a reasonable way to send data between applications. For example, does this always work on a modern Windows machine, or what if the computer does not have a network card? Are TCP connections virtualized to work on a local IP address, regardless of the actual hardware in the system?

I found a lot of information about several network cards, but said nothing about network cards.

Windows. , , / , TCPClient?

, , , , . , Windows Communication Framework , .

# VB.NET , .

. . , , , . , -.

: usr . , WCF. , . , " " . , - ... .

+4
1

TCP . loopback-. Ethernet , ...

. ..NET .

, TCP . RPC , .NET( , ) WCF. WCF - .

, , RPC .

+2

More articles:


All Articles