Running gen_icmp in iex mix project about gen_icmp HOT 3 CLOSED

https://github.com/msantos/procket#setuid-vs-sudo-vs-capabilities contains the details about permissions iirc -- it's the underlying library under gen_icmp.

from gen_icmp.

The {:error, :eperm} means the user running beam doesn't have permission to open an ICMP socket. The link @ferd provided has more info on how to set up the helper binary.

The second error you are seeing happens because gen_icmp expects an Erlang string not a binary. Using a string works:

iex(2)> :gen_icmp.ping("ya.ru")
** (FunctionClauseError) no function clause matching in :gen_icmp.ping/3
    src/gen_icmp.erl:147: :gen_icmp.ping(#PID<0.63.0>, "ya.ru", [])
    src/gen_icmp.erl:143: :gen_icmp.ping/2

iex(2)> :gen_icmp.ping('ya.ru')
[{:ok, 'ya.ru', {93, 158, 134, 3}, {93, 158, 134, 3}, {49359, 0, 52, 277},
  " !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJK"}]

Let me know if any of this is not clear or if you run into any other problems!

from gen_icmp.

😱 👍 Thanks a lot!

from gen_icmp.