Elixir gen_udp example

Quick and dirty UDP server/client… open two shell iex sessions:

In first session (this will be the server):

iex(1)> {:ok, socket} = :gen_udp.open(3000, [:binary , active: false])
{:ok, #Port<0.7>}

From the second session:

iex(4)> {:ok, socket} = :gen_udp.open(3001)
{:ok, #Port<0.8>}
iex(5)> :gen_udp.send(socket, {0,0,0,0}, 3000, "yo")
:ok

Back in the first session:

iex(4)> {:ok, data} = :gen_udp.recv(socket, 0)
{:ok, { {127, 0, 0, 1}, 3001, "yo"} }

graph TD; A-->B; A-->C; B-->D; C-->D;