libtelnet: Bindings to libtelnet

[ gpl, library, network ] [ Propose Tags ]

Binds , a C library for writing telnet clients and servers. See or Network.Telnet.LibTelnet to get started.

[Skip to Readme]


Manual Flags


Build the example program


Use -f <flag> to enable a flag, or -f -<flag> to disable that flag. More info


Note: This package has metadata revisions in the cabal description newer than included in the tarball. To unpack the package including the revisions, use 'cabal get'.

Maintainer's Corner

Package maintainers

For package maintainers and hackage trustees


Versions [RSS],
Change log
Dependencies base (>=4.9 && <4.17), bytestring (>= && <0.12) [details]
License GPL-3.0-or-later
Copyright (c) 2017-2021 Jack Kelly
Author Jack Kelly
Revised Revision 2 made by jack at 2021-08-23T23:34:50Z
Category Network
Home page
Bug tracker
Source repo head: git clone
Uploaded by jack at 2021-02-13T06:01:09Z
Reverse Dependencies 1 direct, 0 indirect [details]
Executables example
Downloads 820 total (13 in the last 30 days)
Rating (no votes yet) [estimated by Bayesian average]
Your Rating
  • λ
  • λ
  • λ
Status Docs uploaded by user [build log]
All reported builds failed as of 2021-02-13 [all 3 reports]

Readme for libtelnet-

[back to package description]

Bindings to libtelnet status

This is a wrapper around libtelnet, a C library for handling Telnet streams, including option negotiation, &c. As a cleartext protocol, Telnet is thorougly unsuitable for use on the open internet, but you might have a niche where it makes sense:

  • MU* games still use it, and so the clients people want to use only speak Telnet,
  • You might be speaking Telnet inside a stunnel, or
  • You might have some ancient hardware that can't be updated, and doesn't have ssh, but you want to talk to it using Haskell.

This library hews closely to the interface provided by the C libtelnet, so reading the excellent C documentation will help you. The short version goes something like this:

  1. Define an event handler of type Network.Telnet.LibTelnet.EventHandler. This function receives callbacks that tell you what received data should be propagated to the application, and what bytes need to be sent out over the socket.

  2. Pass your event handler (and some other flags) to Network.Telnet.LibTelnet.telnetInit, which will give you access to a Telnet, a garbage-collected state tracker.

  3. Tell the state tracker that data has arrived on the socket, or that you want to send data to the socket, by passing it to the library's other functions.

Other Resources