Packages

macula

1.4.21
7.1.0 7.0.0 6.0.0 5.2.2 5.2.1 5.2.0 5.1.0 5.0.0 4.8.0 4.7.1 4.7.0 4.6.0 4.5.0 4.4.10 4.4.9 4.4.8 4.4.7 4.4.6 4.4.5 4.4.4 4.4.3 4.4.2 4.4.1 4.4.0 4.3.1 4.3.0 4.2.9 4.2.8 4.2.7 4.2.6 4.2.5 4.2.4 4.2.3 4.2.2 4.2.1 4.2.0 4.1.1 4.1.0 4.0.0 3.16.0 3.15.3 3.15.2 3.15.1 3.14.0 3.13.0 3.12.1 3.12.0 3.11.1 3.11.0 3.10.3 3.10.2 3.10.1 3.9.0 3.8.0 3.7.0 3.5.0 3.4.0 3.3.0 3.2.0 3.1.0 3.0.0 2.1.1 2.1.0 2.0.0 1.5.2 1.5.1 1.4.30 1.4.29 1.4.28 1.4.27 1.4.26 1.4.25 1.4.24 1.4.23 1.4.22 1.4.21 1.4.20 1.4.19 1.4.18 1.4.17 1.4.16 1.4.15 1.4.14 1.4.13 1.4.11 1.4.10 1.4.9 1.4.8 1.4.7 1.4.6 1.4.5 1.4.4 1.4.3 1.4.2 1.4.1 1.4.0 1.3.1 1.3.0 1.2.0 1.1.0 1.0.10 1.0.9 1.0.8 1.0.7 1.0.6 1.0.5 1.0.4 1.0.3 1.0.2 1.0.1 1.0.0 0.48.6 0.48.5 0.48.4 0.48.3 0.48.2 0.48.1 0.48.0 0.47.1 0.47.0 0.46.3 0.46.1 0.46.0 0.45.3 0.45.2 0.45.1 0.45.0 0.44.2 0.44.1 0.44.0 0.43.3 0.43.2 0.43.1 0.43.0 0.42.9 0.42.8 0.42.7 0.42.6 0.42.5 0.42.4 0.42.3 0.42.2 0.42.1 0.42.0 0.41.1 0.41.0 0.40.1 0.40.0 0.39.9 0.39.8 0.39.7 0.39.6 0.39.5 0.39.4 0.39.3 0.39.2 0.39.1 0.39.0 0.38.8 0.38.7 0.38.6 0.38.5 0.38.4 0.38.3 0.38.2 0.38.1 0.38.0 0.37.7 0.37.6 0.37.5 0.37.4 0.37.3 0.37.2 0.37.1 0.37.0 0.36.6 0.36.5 0.36.4 0.36.3 0.36.2 0.36.1 0.36.0 0.35.4 0.35.3 0.35.2 0.35.1 0.35.0 0.34.1 0.34.0 0.33.1 0.33.0 0.32.5 0.32.4 0.32.3 0.32.2 0.32.1 0.32.0 0.31.9 0.31.8 0.31.7 0.31.6 0.31.5 0.31.4 0.31.3 0.31.2 0.31.1 0.31.0 0.30.10 0.30.9 0.30.8 0.30.7 0.30.6 0.30.5 0.30.4 0.30.3 0.30.2 0.30.1 0.30.0 0.29.0 0.28.3 0.28.2 0.28.1 0.28.0 0.27.1 0.27.0 0.26.1 0.26.0 0.25.6 0.25.5 0.25.4 0.25.3 0.25.2 0.25.1 0.25.0 0.24.6 0.24.5 0.24.4 0.24.3 0.24.2 0.24.1 0.24.0 0.23.3 0.23.2 0.23.1 0.23.0 0.22.12 0.22.11 0.22.10 0.22.9 0.22.8 0.22.7 0.22.6 0.22.5 0.22.4 0.22.3 0.22.2 0.22.1 0.22.0 0.21.7 0.21.6 0.21.5 0.21.4 0.21.2 0.21.1 0.21.0 0.20.25 0.20.24 0.20.23 0.20.22 0.20.21 0.20.20 0.20.19 0.20.18 0.20.17 0.20.16 0.20.15 0.20.14 0.20.13 0.20.12 0.20.11 0.20.10 0.20.9 0.20.8 0.20.7 0.20.6 0.20.5 0.20.3 0.20.2 0.20.1 0.20.0 0.19.2 0.19.1 0.19.0 0.18.1 0.18.0 0.17.4 0.17.3 0.17.2 0.17.1 0.17.0 0.16.6 0.16.5 0.16.4 0.16.3 0.16.2 0.16.1 0.16.0 0.15.1 0.15.0 0.14.3 0.14.2 0.14.1 0.14.0 0.12.6 0.12.5 0.12.3 0.11.3 0.10.2 0.10.1 0.10.0 0.9.2 0.9.1 0.9.0 0.8.25 0.8.24 0.8.23 0.8.22 0.8.21 0.8.20 0.8.19 0.8.18 0.8.17 0.8.16 0.8.15 0.8.14 0.8.13 0.8.12 0.8.11 0.8.10 0.8.9 0.8.8 0.8.7 0.8.6 0.8.5 0.8.4 0.8.3 0.8.2 0.8.1 0.8.0 0.7.30 0.7.29 0.7.28 0.7.27 0.7.26 0.7.25 0.7.24 0.7.23 0.7.22 0.7.21 0.7.20 0.7.19 0.7.18 0.7.17 0.7.16 0.7.15 0.7.14 0.7.13 0.7.12 0.7.11 0.7.10 0.7.9 0.7.8 0.7.7 0.7.6 0.7.5 0.7.4 0.7.3 0.7.2 0.7.1 0.7.0 0.6.7 0.6.6 0.6.5 0.6.4 0.6.3 0.6.2 0.6.1 0.6.0 0.5.0 0.4.4 0.4.3 0.4.2 0.4.1 0.4.0 0.3.4 0.3.3 0.3.2 0.3.1

Macula HTTP/3 Mesh SDK — connect, subscribe, publish, call, advertise

Current section

Files

Jump to
macula src macula_dist_system macula_dist_mdns_advertiser.erl
Raw

src/macula_dist_system/macula_dist_mdns_advertiser.erl

%%%-------------------------------------------------------------------
%%% @doc Macula Distribution mDNS Advertiser.
%%%
%%% This module implements the mdns advertiser behaviour from the
%%% shortishly/mdns library. It advertises Macula distribution nodes
%%% via mDNS for automatic discovery on local networks.
%%%
%%% Usage:
%%% %% Start advertising
%%% mdns_advertise_sup:start_child(macula_dist_mdns_advertiser).
%%%
%%% %% Stop advertising
%%% mdns_advertise:stop(macula_dist_mdns_advertiser).
%%%
%%% @end
%%%-------------------------------------------------------------------
-module(macula_dist_mdns_advertiser).
-export([service/0, instances/0]).
%% Registration API (called by macula_dist_discovery)
-export([register/2, unregister/0]).
%% Persistent term key for storing instance info
-define(INSTANCE_KEY, {?MODULE, instance}).
%%%===================================================================
%%% API Functions
%%%===================================================================
%% @doc Return the mDNS service type.
%% This follows the standard format: _service._protocol.local.
-spec service() -> string().
service() ->
"_macula-dist._udp.".
%% @doc Return the list of service instances to advertise.
%% Each instance is a map with:
%% - instance: Full instance name
%% - priority: SRV record priority (lower = preferred)
%% - weight: SRV record weight for load balancing
%% - port: The port the service is running on
%% - hostname: The hostname without domain
%% - properties: TXT record key-value pairs
-spec instances() -> [map()].
instances() ->
case persistent_term:get(?INSTANCE_KEY, undefined) of
undefined ->
[];
Instance ->
[Instance]
end.
%%%===================================================================
%%% Registration API (called by macula_dist_discovery)
%%%===================================================================
%% @doc Register this node for mDNS advertisement.
-spec register(atom() | string(), pos_integer()) -> ok.
register(NodeName, Port) ->
Instance = make_instance(NodeName, Port),
persistent_term:put(?INSTANCE_KEY, Instance),
ok.
%% @doc Unregister this node from mDNS advertisement.
-spec unregister() -> ok.
unregister() ->
persistent_term:erase(?INSTANCE_KEY),
ok.
%%%===================================================================
%%% Internal Functions
%%%===================================================================
%% @private Create instance map for mDNS advertisement.
make_instance(NodeName, Port) ->
NodeStr = node_to_string(NodeName),
Hostname = get_hostname(),
#{
instance => NodeStr ++ "." ++ service() ++ "local.",
priority => 0,
weight => 0,
port => Port,
hostname => Hostname ++ ".",
properties => #{
"node" => NodeStr,
"version" => get_version()
}
}.
%% @private Convert node name to string.
node_to_string(NodeName) when is_atom(NodeName) ->
atom_to_list(NodeName);
node_to_string(NodeName) when is_list(NodeName) ->
NodeName;
node_to_string(NodeName) when is_binary(NodeName) ->
binary_to_list(NodeName).
%% @private Get the hostname without domain.
get_hostname() ->
case net_adm:localhost() of
Hostname when is_list(Hostname) ->
%% Remove domain suffix if present
case string:split(Hostname, ".") of
[Short | _] -> Short;
_ -> Hostname
end;
_ ->
"localhost"
end.
%% @private Get macula version.
get_version() ->
case application:get_key(macula, vsn) of
{ok, Vsn} -> Vsn;
undefined -> "unknown"
end.