The unpac monorepo manager self-hosting as a monorepo using unpac
eio_windows: work around problems in Unix.getaddrinfo
OCaml's `Unix.getaddrinfo` on Windows doesn't set `ai_protocol` to
anything useful, so you can't tell which addresses are TCP and which are
UDP. So, do two separate queries.
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vendor/opam/eio/lib_eio_windows/net.ml
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vendor/opam/eio/lib_eio_windows/net.ml
···
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let datagram_socket fd =
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Eio.Resource.T (fd, datagram_handler)
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-
(* https://www.iana.org/assignments/protocol-numbers/protocol-numbers.xhtml *)
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let getaddrinfo ~service node =
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let to_eio_sockaddr_t {Unix.ai_family; ai_addr; ai_socktype; ai_protocol; _ } =
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match ai_family, ai_socktype, ai_addr with
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| (Unix.PF_INET | PF_INET6),
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(Unix.SOCK_STREAM | SOCK_DGRAM),
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Unix.ADDR_INET (inet_addr,port) -> (
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match ai_protocol with
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| 6 -> Some (`Tcp (Eio_unix.Net.Ipaddr.of_unix inet_addr, port))
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| 17 -> Some (`Udp (Eio_unix.Net.Ipaddr.of_unix inet_addr, port))
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| _ -> None)
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| _ -> None
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+
(* OCaml's [Unix.getaddrinfo] on Windows doesn't set [ai_protocol] to
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anything useful, so you can't tell which addresses are TCP and which are
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UDP. So, do two separate queries. *)
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let get ty k =
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Unix.getaddrinfo node service [AI_SOCKTYPE ty]
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|> List.filter_map (function
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| {Unix.ai_addr = ADDR_INET (host, port); _} ->
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Some (k (Eio_unix.Net.Ipaddr.of_unix host, port))
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| _ -> None
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)
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in
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Err.run (Eio_unix.run_in_systhread ~label:"getaddrinfo") @@ fun () ->
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let rec aux () =
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try
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Unix.getaddrinfo node service []
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|> List.filter_map to_eio_sockaddr_t
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get SOCK_STREAM (fun x -> `Tcp x) @
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get SOCK_DGRAM (fun x -> `Udp x)
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with Unix.Unix_error (EINTR, _, _) -> aux ()
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in
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aux ()