package charrua-client-lwt

  1. Overview
  2. Docs
A DHCP client using lwt as effectful layer

Install

Dune Dependency

Authors

Maintainers

Sources

charrua-core-0.11.0.tbz
md5=f4bb1ac3d1443a576982eae49d0eb7d8

Description

charrua-client-lwt extends charrua-client with a functor Dhcp_client_lwt, using the provided modules for timing and networking logic, for convenient use by a program which might wish to implement a full client.

Tags

org:mirage

Published: 17 Nov 2018

README

Charrua DHCP - a DHCP client, server and wire frame encoder and decoder

charrua is an ISC-licensed DHCP library implementation in OCaml. It provides five packages:

  • charrua-core: a library that handles wire traffic parsing and a server implementation

  • charrua-client: a library for handling DHCP client state and messages

  • charrua-client-lwt: a DHCP client library with timeouts and network read/write

  • charrua-client-mirage: a MirageOS-compatible set of interfaces to charrua-client-lwt

  • charrua-unix: a Unix DHCP server implementation

Charrua-core

Charrua-core consists of two modules, a Dhcp_wire responsible for parsing and constructing DHCP messages and a Dhcp_server module used for constructing DHCP servers.

You can browse the API for charrua-core at http://mirage.github.io/charrua-core/api

dhcp is a Mirage DHCP unikernel server based on charrua-core, included as a part of the MirageOS unikernel example and starting-point repository.

Features
  • Dhcp_server supports a stripped down ISC dhcpd.conf, so you can probably just use your old dhcpd.conf. It also supports manual configuration building in OCaml.

  • Dhcp_wire provides marshalling and unmarshalling utilities for DHCP, it is the base for Dhcp_server.

  • Logic/sequencing is agnostic of IO and platform, so it can run on Unix as a process, as a Mirage unikernel or anything else.

  • All DHCP options are supported at the time of this writing.

  • Code is purely applicative.

  • It's in OCaml, so it's pretty cool.

The name charrua is a reference to the, now extinct, semi-nomadic people of southern South America.

Charrua-client

charrua-client is a DHCP client powered by charrua-core.

The base library exposes a simple state machine in Dhcp_client for use in acquiring a DHCP lease.

charrua-client-lwt extends charrua-client with a functor Dhcp_client_lwt, using the provided modules for timing and networking logic, for convenient use by a program which might wish to implement a full client.

charrua-client-mirage exposes an additional Dhcp_client_mirage for direct use with the MirageOS library operating system.

Charrua-unix Server

charrua-unix is an ISC-licensed Unix DHCP daemon based on charrua-core.

Features
  • Supports a stripped down ISC dhcpd.conf. A configuration sample can be found here

  • Privilege dropping: the daemon doesn't run as root.

  • Almost purely-functional code.

  • Support for multiple interfaces/subnets.

Try charruad --help for options.

This project became one of the Mirage Pioneer projects.

Dependencies (15)

  1. mirage-types-lwt >= "3.0.0" & < "3.7.0"
  2. lwt
  3. fmt
  4. tcpip >= "3.2.0" & < "3.6.0"
  5. logs
  6. mirage-time-lwt
  7. duration
  8. mirage-random >= "1.0.0" & < "2.0.0"
  9. rresult
  10. ipaddr < "3.0.0"
  11. cstruct >= "3.0.2"
  12. charrua-client >= "0.11.0" & < "0.12.0"
  13. charrua-core >= "0.11.0" & < "0.12.0"
  14. ocaml >= "4.04.2"
  15. jbuilder >= "1.0+beta9"

Dev Dependencies (2)

  1. cstruct-unix with-test
  2. alcotest with-test

Used by (1)

  1. charrua-client-mirage = "0.11.0"

Conflicts

None

OCaml

Innovation. Community. Security.