[VB.NET] Errore usando socket: argomento (size) specificato non compreso nell'intervallo

[fermat]

ciao!

stavo giocando con le socket in vb.net.

questa la classe su cui riscontro l'errore:

Imports System.Net.Sockets
Imports System.Text

Public Class GetClient

    Dim clientSocket As TcpClient
    Dim clNo As String

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

    Private Sub doChat()
        Dim requestCount As Integer
        Dim bytesFrom(1024) As Byte
        Dim dataFromClient As String
        Dim sendBytes As [Byte]()
        Dim serverResponse As String
        Dim rCount As String
        requestCount = 0

        While (True)
            Try
                requestCount = requestCount + 1
                Dim networkStream As NetworkStream = clientSocket.GetStream()
                networkStream.Read(bytesFrom, 0, CInt(clientSocket.ReceiveBufferSize))
                dataFromClient = Encoding.ASCII.GetString(bytesFrom)
                dataFromClient = dataFromClient.Substring(0, dataFromClient.IndexOf("$"))
                msg("Dal client " + clNo + dataFromClient)
                rCount = Convert.ToString(requestCount)
                serverResponse = "Risposta (" + clNo + ") " + rCount
                sendBytes = Encoding.ASCII.GetBytes(serverResponse)
                networkStream.Write(sendBytes, 0, sendBytes.Length)
                networkStream.Flush()
                msg(serverResponse)
            Catch ex As Exception
                Console.WriteLine(ex.Message)
                Console.WriteLine(ex.StackTrace)
            End Try

        End While

    End Sub

End Class

in pratica il server si avvia, ma se invio una richiesta di questo tipo:

curl localhost:13000

sulla console del server visualizzo questo:

Argomento specificato non compreso nell'intervallo.
Nome parametro: size
   in System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size)
   in VBTest.GetClient.doChat() in C:\VS_PROJ\VBTest\GetClient.vb:riga 29

la riga 29 è questa:

networkStream.Read(bytesFrom, 0, CInt(clientSocket.ReceiveBufferSize))