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Update hostname resolution check (#628)

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Jonatan Kłosko 2021-10-21 12:45:07 +02:00 • committed by GitHub
parent 39f1b9b298
commit e2e9c95880
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1 changed files with 6 additions and 2 deletions
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8
lib/livebook/application.ex
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@ -88,8 +88,12 @@ defmodule Livebook.Application do
invalid_hostname!("your hostname \"#{hostname}\" does not resolve to an IP address")
{:ok, hostent(h_addrtype: :inet, h_addr_list: addresses)} ->
if {127, 0, 0, 1} not in addresses do
invalid_hostname!("your hostname \"#{hostname}\" does not resolve to 127.0.0.1")
any_loopback? = Enum.any?(addresses, &match?({127, _, _, _}, &1))
unless any_loopback? do
invalid_hostname!(
"your hostname \"#{hostname}\" does not resolve to a loopback address (127.0.0.0/8)"
)
end
_ ->