Telnet .NET Component

The Telnet component fills the Telnet gap in the .NET Framework. Use the Telnet component to easily communicate with remote Telnet servers. Features include:

The Login method logs into the server and issues username and password with one step.
Rexec, Rsh and Rlogin support.
For synchronous operation, use the Send and Receive methods.
For asynchronous operation, use the BeginSend and BeginReceive methods.
Use the default option negotiation which negotiates most common options.
Use the highly-customizable option negotiation for custom negotiation.
The WaitFor method reads from the stream until a token is received. Ideal for scripting applications.
Integrates with all versions of Visual Studio and supports C#, VB.NET, ASP.NET, Delphi 8, C# Builder, and other .NET compliant development environments.

Looking for the ActiveX version of this component?

Interface

Public Constructors
Telnet	Overloaded. Initialize a new instance of the Telnet class.
Public Properties
Binary	Gets or sets a value which indicates if the TRANSMIT-BINARY option should be negotiated for both client and server.
ClientOptions	Contains the current client options for a Telnet session.
Echo	Gets or sets a value which inidicates that the ECHO option should be negotiated.
Editor	In Visual Studio.NET, displays an interactive form to use to test real time protocol operations.
ServerOptions	Contains the current server options for a Telnet session.
TerminalType	Gets or sets a value representing the client's terminal type.
WindowSize	Gets or sets a value representing the client's window size.
Public Methods
Login	Connects to a Telnet server and attempts to automatically login.
Refresh	Performs option negotiation for any option that has not yet been sent.
SendCommand	Send a Telnet control functions.
SendOption	Send option data to the remote host.
SendSubOption	Send suboption data to the remote host.
WaitFor	Reads data from the stream until the specified string is found.
Public Events
ClientOptionChanged	Raised when a client Telnet option has changed state (WILL or WONT confirmed).
CommandReceived	This event is raised when a Telnet command has been received from the server.
ServerOptionChanged	Raised when a server Telnet option has changed state (DO or DONT confirmed).

Code Example

How easy is the Telnet component to use? This example demonstrates basic Telnet usage.

' Set ReceiveTimeout to nonzero, required for Login method
Telnet1.ReceiveTimeout = 3000

' Login
Telnet1.Login("myserver", "myuser", "mypass", "$ ")

' Send a command
Telnet1.Send("pwd" + vbCrLf)

' Receive the response
Dim Seg As Segment = Telnet1.Receive()
Debug.WriteLine(Seg.ToString())

' Close the connection
Telnet1.Close()

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