The henet package

[ Tags: ffi, library, mit, network ] [ Propose Tags ]

ENet is a networking library on top of UDP. In it's own words:

"ENet's purpose is to provide a relatively thin, simple and robust network communication layer on top of UDP (User Datagram Protocol). The primary feature it provides is optional reliable, in-order delivery of packets.

ENet omits certain higher level networking features such as authentication, lobbying, server discovery, encryption, or other similar tasks that are particularly application specific so that the library remains flexible, portable, and easily embeddable."

This library contains both bindings and a slightly cleaned up interface on top. The bindings are as close to the original as possible. Names are striped of the leading enet_ and converted to CamelCase, and the occasional newtype is used instead, but otherwise all functions signatures are exactly the same. The bindings are in Network.ENet.Bindings.

The higher level interface is all other exposed modules. Functions like enet_host_* are placed in Network.ENet.Host. All functions are present except for the enet_socket* functions: they are just wrappers of the Posix Sockets Interface, which is already provided in Haskell by the network package. Changes are fairly minimal: Out-Args are now returned with a tuple, conversions between C and Haskell types happen automatically (when Haskell versions exists), and nullable pointer types have been replaced with Maybes. In short, there should be very few reasons to use the raw bindings over the "nice" interface.

At the moment, consult the ENet website for documentation. In the vast majority of cases the documentation there should apply here exactly, I will try to add Haddock documentation for everywhere it does not.

ENet currently only supports IPv4 at the moment (though that should soon change), and must be called from only one bound thread (i.e. thread created with forkOS). Richer native networking libraries leveraging Haskell's strengths exist, and for new projects I'd recommend those. But for interfacing with existing protocols using ENet, this package should be quite useful.


Dependencies base (>=3 && <5), bitset (>=1.4.7), bytestring (>=0.10), network (>=2.4.1), typesafe-endian (==0.1.*) [details]
License MIT
Author John Ericson
Category Network, FFI
Bug tracker
Source repository head: git clone git://
Uploaded Wed Sep 4 04:03:21 UTC 2013 by JohnEricson
Distributions NixOS:
Downloads 1631 total (9 in the last 30 days)
Rating 0.0 (0 ratings) [clear rating]
  • λ
  • λ
  • λ
Status Docs not available [build log]
Last success reported on 2015-05-19 [all 8 reports]
Hackage Matrix CI


  • Network
    • Network.ENet
      • Network.ENet.Bindings
      • Network.ENet.Host
      • Network.ENet.Packet
      • Network.ENet.Peer


Maintainer's Corner

For package maintainers and hackage trustees