Using the TelnetSession class

This section describes how you can run a telnet session in a non-interactive (no user interaction required) mode. The ability to run a telnet session in non-interactive mode is a very powerful feature allowing you to automate tasks that previously required user-interaction.

Use Case

A very basic example of a scripted telnet session would be to automate the following procedure:

Example

[C#]

using System;

using Jscape.Telnet;

namespace SessionExample {

       public class TelnetExample {

               public TelnetExample(string hostname) {

                       // Create new telnet session

                       TelnetSession session = new TelnetSession(hostname);

                       // Connect to telnet server using username and password

                       session.Connect("username", "password");

                       // Send command to telnet server

                       session.Send("ls -al");

                       // Terminate telnet session without waiting for shell prompt.

                       session.SendNoWait("exit");

                       // Disconnect

                       session.Disconnect();

               }

               public static void Main() {

                       // Create new TelnetExample instance passing telnet server hostname or IP address

                       TelnetExample example = new TelnetExample("telnet.server.com");

               }

       }

}

[Visual Basic]

Imports System

Imports Jscape.Telnet

Public Class TelnetExample

   Private mySession As TelnetSession

   Private hostname As String = ""

   Public Sub New(ByVal hostname As String)

       ' set hostname

       Me.hostname = hostname

       ' Create new telnet session

       mySession = New TelnetSession(hostname)

       ' Connect to telnet server using username and password

       mySession.Connect("username", "password")

       ' Send command to telnet server

       mySession.Send("ls -al")

       ' Terminate telnet session without waiting for shell prompt.

       mySession.SendNoWait("exit")

       ' Disconnect

       mySession.Disconnect()

   End Sub

   Public Shared Sub main()

       ' Create new TelnetExample instance passing telnet server hostname or IP address

       Dim example As TelnetExample

       example = New TelnetExample("telnet.server.com")

   End Sub

End Class