Here is my code:

defmodule Server do
    def listen_for_con(ip_addr) do
        case :gen_tcp.listen(8000, [:binary, active: false, reuseaddr: true, ip: ip_addr]) do
            {:ok, server} -> IO.puts "Server is listening"
            {:error, reason} -> IO.puts "Error in :gen_tcp.listen: #{reason}"
        end
    end
end

Server.listen_for_con("example_ip_addr")

Here is the error that I get when I try to run the code:

(exit) :badarg
(kernel 7.2) inet_tcp.erl:160: :inet_tcp.listen/2
server2.exs:3: Server.listen_and_accept/1
(elixir 1.11.2) lib/code.ex:931: Code.require_file/2

I do not know what is wrong with the arguments I am giving to the function.

It is a script and I run it as follows: elixir server.exs

Thanks in advance guys.