Ex_d4 allows for communicating with d4-servers in elixir.
If available in Hex, the package can be installed
by adding ex_d4 to your list of dependencies in mix.exs:
def deps do
[
{:exd4, "~> 0.1.0"}
]
endDocumentation can be generated with ExDoc and published on HexDocs. Once published, the docs can be found at https://hexdocs.pm/ex_d4.
First, create Exd4 map:
d4_connection = %Exd4{
destination: {192, 168, 0, 1},
port: 4443,
uuid: "b5062e1f-beef-45a0-dead-2557d6e70ef6",
type: 3,
version: 1,
snaplen: 4096,
key: "toto"
}Then the Sender can be run by itself:
pry(2)> {:ok, pid} = Sender.start_link(d4_connection: d4_connection)
{:ok, #PID<0.267.0>}
# one can also define a name
pry(3)> {:ok, pid} = Sender.start_link([d4_connection: d4_connection, name: :d4sender])
{:ok, #PID<0.275.0>}Or under a supervisor:
def start(_type, _args) do
children = [
{Sender,
d4_connection: %Exd4{
destination: {192, 168, 0, 1},
uuid: "b5062e1f-674e-45a0-9c30-2557d6e70ef8"
},
name: :d4_sender}
]
opts = [strategy: :one_for_one, name: MyApp.Supervisor]
Supervisor.start_link(children, opts)
endThen, we can send packets using send:
pry(2)> {:ok} = Sender.send(pid, "{\"this\": \"is my test\"}\n")
14:44:38.813 [debug] Sent payload to d4 server.
{:ok}
#using a name if defined on creation, or launched under the supervisor
pry(3)> {:ok} = Sender.send(:d4sender, "toto\n")
14:46:55.494 [debug] Sent payload to d4 server.
{:ok}D4 server with the following registered sensors:
b5062e1f-674e-45a0-9c30-2557d6e70ef5
b5062e1f-674e-45a0-9c30-2557d6e70ef6
b5062e1f-674e-45a0-9c30-2557d6e70ef7
b5062e1f-674e-45a0-9c30-deaddeaddead