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Support finding epmd wit ipv6

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This commit is contained in:
José Valim 2023-01-31 09:33:29 +01:00
parent 86bf972c0d
commit eaa4856972
1 changed files with 9 additions and 1 deletions
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10
lib/livebook/application.ex
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@ -124,7 +124,15 @@ defmodule Livebook.Application do
unless Livebook.Config.longname() do
[nodename, hostname] = node() |> Atom.to_charlist() |> :string.split(~c"@")
with {:ok, nodenames} <- :erl_epmd.names(hostname),
# erl_epmd names do not support ipv6 resolution by default,
# unless inet6 is configured, so we attempt both.
gethostbyname =
with {:error, _} <- :inet.gethostbyname(hostname, :inet, :infinity),
{:error, _} <- :inet.gethostbyname(hostname, :inet6, :infinity),
do: :error
with {:ok, hostent(h_addr_list: [epmd_addr | _])} <- gethostbyname,
{:ok, nodenames} <- :erl_epmd.names(epmd_addr),
true <- List.keymember?(nodenames, nodename, 0) do
:ok
else