package mirage

  1. Overview
  2. Docs
The MirageOS library operating system

Install 

dune-project
 Dependency

github.com Readme Changelog ISC License Edit opam file Versions (10)

Authors

  1. T
    Thomas Gazagnaire
  2. A
    Anil Madhavapeddy
  3. Gabriel Radanne
  4. M
    Mindy Preston
  5. T
    Thomas Leonard
  6. N
    Nicolas Ojeda Bar
  7. D
    Dave Scott
  8. D
    David Kaloper
  9. H
    Hannes Mehnert
  10. R
    Richard Mortier

Maintainers

  1. A
    anil@recoil.org
  2. T
    thomas@gazagnaire.org

Sources

mirage-4.10.5.tbz
sha256=c0b2deb8f9cfec44f9dbc256a18b50944f2aa8fcba84aef3165abebd23476e0c
sha512=e354f1cb4d12b424c22b9add0851a8750fe09f095ca97f0ec0360b18f7c69db60b155fdd18b0d7a6cea3432e63f20e4695a5bccaac3fc34588348e4311baa1c5

doc/src/mirage.devices/dns.ml.html

Source file dns.ml

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open Functoria.DSL

type dns_client = Dns_client

let dns_client = typ Dns_client

let generic_dns_client ?dhcp ?group ?timeout ?nameservers ?cache_size () =
  Option.iter
    (fun (requests, _) -> Ip.Dhcp_requests.add requests 6 (* DNS_SERVERS *))
    dhcp;
  let packages = [ package "dns-client-mirage" ~min:"10.0.0" ~max:"11.0.0" ] in
  let nameservers = Runtime_arg.dns_servers ?group nameservers
  and timeout = Runtime_arg.dns_timeout ?group timeout
  and cache_size = Runtime_arg.dns_cache_size ?group cache_size in
  let runtime_args = Runtime_arg.[ v nameservers; v timeout; v cache_size ] in
  let packages, extra_deps, connect =
    match dhcp with
    | None ->
        let connect _info modname = function
          | [ stackv4v6; happy_eyeballs; nameservers; timeout; cache_size ] ->
              code ~pos:__POS__
                {ocaml|%s.connect @[?nameservers:%s ?timeout:%s ?cache_size:%s@ (%s, %s)@]|ocaml}
                modname nameservers timeout cache_size stackv4v6 happy_eyeballs
          | _ -> Misc.connect_err "generic_dns_client" 5
        in
        (packages, None, connect)
    | Some (_, lease) ->
        let connect _info modname = function
          | [
              stackv4v6; happy_eyeballs; lease; nameservers; timeout; cache_size;
            ] ->
              (* The nameservers argument has to be turned into a string. *)
              code ~pos:__POS__
                "let nameservers =@[@ match %s, %s with@ | None, None -> None@ \
                 | Some ns, _ -> Some ns@ | None, Some lease ->@[@ let \
                 nameservers = Dhcp_wire.collect_dns_servers lease in@.if \
                 nameservers = [] then None@.else Some (List.concat_map (fun \
                 ip -> [Fmt.str \"udp:%%a\" Ipaddr.V4.pp ip; Fmt.str \
                 \"tcp:%%a\" Ipaddr.V4.pp ip]) \
                 nameservers)@]@]@.in@.%s.connect @[?nameservers ?timeout:%s \
                 ?cache_size:%s@ (%s, %s)@]"
                nameservers lease modname timeout cache_size stackv4v6
                happy_eyeballs
          | _ -> Misc.connect_err "generic_dns_client" 6
        in
        ( package ~min:"2.0.0" ~max:"4.0.0" "charrua" :: packages,
          Some [ dep lease ],
          connect )
  in
  impl ~runtime_args ~packages ?extra_deps ~connect "Dns_client_mirage.Make"
    (Stack.stackv4v6 @-> Happy_eyeballs.happy_eyeballs @-> dns_client)