Which method to access Telnet data? Socket or TcpClient & Networkstream?

[cgchris99]

I am trying to figure out which is the fastest and most efficient method to become the client to receive information from the host via port 23.

I have tested both methods and they seem to both work.
Why should I use one over the other? One uses tcpclient & networkstream and the other uses socket.receive

thanks for any advice



Method A:
'-----------------------------------------------------------------------
Dim ASCII As Encoding = Encoding.ASCII
Dim StrGet As String = "GVC000"
Dim ByteGet As Byte() = ASCII.GetBytes(StrGet)
Dim RecvBytes(256) As Byte
Dim strRetPage As String = Nothing
Dim hostadd As IPAddress = IPAddress.Parse("192.168.0.3")
Dim ephost As New IPEndPoint(hostadd, 23)
Dim s As New Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp)
s.Connect(ephost)
If Not s.Connected Then
MsgBox("Unable to connect")
End If
s.Send(ByteGet, ByteGet.Length, 0)

Dim bytes As Int32 = s.Receive(RecvBytes, RecvBytes.Length, 0)
strRetPage = "Data Recvd: "
strRetPage = strRetPage + ASCII.GetString(RecvBytes, 0, bytes)
While bytes > 0
bytes = s.Receive(RecvBytes, RecvBytes.Length, 0)
strRetPage = "Data Recvd: "
strRetPage = strRetPage + ASCII.GetString(RecvBytes, 0, bytes)
End While


MethodB
'-----------------------------------------------------------------------
Dim tcpClient1 as New TcpClient()
Dim NS as NetworkStream
Dim bytes(tcpclient1.RecieveBufferSize) as byte
Dim hostaddr1 as IPAddress = IPAddress.Parse("192.168.0.3")
Dim MyEndPoint1 as New IPEndPoint(hostaddr1,23)

tcpClient1.Connect(MyEndPoint1)
NS = tcpClient1.GetStream
ReDim bytes(tcpClient1.ReceiveBufferSize)
BuffSize = CInt(tcpClient1.ReceiveBufferSize)
If ns.DataAvailable then
NS.Read(bytes, 0, BuffSize)
Dim Buff2 As String = Encoding.ASCII.GetString(bytes)
end if

[DSJ]

I really can't say which is "better" but looks like method B is a few lines less code, so I'd go with it until you have problems or run into issues.

[J.Bilal]

hi there

for me both codes looks great.

ACTUALLY i need your help i developing a program in which i can connect through TELNET. then be able to enter user name and PWD. once i get in i need to run some commonds and have to collect the results of those command.

on the basis of those results i have to show some out put.
can you plz help me in authantication of user name and PWD?

lastly i would be interested in to find out which above method puts less burdon on the server machine

thanks and cheers