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Elixir Z-Wave library
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lib/grizzly/unsolicited_server.ex
defmodule Grizzly.UnsolicitedServer do
@moduledoc false
use GenServer
require Logger
alias Grizzly.{Options, Transport}
alias Grizzly.UnsolicitedServer.SocketSupervisor
@doc """
Start the unsolicited server
"""
@spec start_link(Options.t()) :: GenServer.on_start()
def start_link(grizzly_opts) do
GenServer.start_link(__MODULE__, grizzly_opts, name: __MODULE__)
end
@impl GenServer
def init(%Options{} = grizzly_opts) do
{ip, port} = grizzly_opts.unsolicited_destination
transport =
Transport.new(grizzly_opts.transport, %{
ip_address: ip,
port: port
})
{:ok, transport, {:continue, :listen}}
end
@impl GenServer
def handle_continue(:listen, transport) do
case listen(transport) do
{:ok, listening_transport, listen_opts} ->
maybe_start_accept_sockets(listening_transport, listen_opts)
{:noreply, listening_transport}
_error ->
# wait 2 seconds to try again
Logger.warning("[Grizzly]: Unsolicited server unable to listen")
:timer.sleep(2000)
{:noreply, transport, {:continue, :listen}}
end
end
defp listen(transport) do
Transport.listen(transport)
rescue
error -> error
end
defp maybe_start_accept_sockets(listening_transport, listen_opts) do
case Keyword.get(listen_opts, :strategy) do
:accept ->
Enum.each(1..10, fn _ ->
SocketSupervisor.start_socket(listening_transport)
end)
:none ->
:ok
end
end
end