ICMP implementation for Erlang using socket (so for now only Unix support).
To send ICMP echo request as unprivileged user (works on macOS and Linux if
user group is within sysctl net.ipv4.ping_group_range):
{ok, Socket} = gen_icmp:open().
Addr = {127, 0, 0, 1}.
ok = gen_icmp:echoreq(Socket, Addr, <<1,2,3,4>>).
receive
{icmp, Addr, {echorep, #{data := <<1,2,3,4>>}}} -> ok
end.If you want to be sure of message order you can use seq option:
{ok, Socket} = gen_icmp:open().
Addr = {127, 0, 0, 1}.
ok = gen_icmp:echoreq(Socket, Addr, <<1,2,3,4>>, [{seq, 0}]).
ok = gen_icmp:echoreq(Socket, Addr, <<5,6,7,8>>, [{seq, 1}]).
receive
{icmp, Addr, {echorep, #{seq := Seq, data := Data}}} ->
io:write("Received reply seq=~B data=~p~n", [Seq, Data])
end.See Apache 2.0.