fix

apps/iot/src/iot_app.erl

@@ -92,7 +92,7 @@ start_udp_server() ->
     {ok, Props} = application:get_env(iot, udp_server),
     Port = proplists:get_value(port, Props),
     UdpOpts = [{udp_options, [binary, {reuseaddr, true}]}],
-    {ok, _} = esockd:open_udp(iot_udp_server, Port, UdpOpts, {iot_udp_server, start_link, []}),
+    {ok, _} = esockd:open_udp(iot_udp_server, Port, UdpOpts, {iot_udp_handler, start_link, []}),
     lager:debug("[iot_app] the udp server start at: ~p", [Port]).
 
 %% 启动内存数据库

apps/iot/src/iot_udp_handler.erl

@@ -0,0 +1,27 @@
+%%%-------------------------------------------------------------------
+%%% @author aresei
+%%% @copyright (C) 2023, <COMPANY>
+%%% @doc
+%%%
+%%% @end
+%%% Created : 31. 8月 2023 13:48
+%%%-------------------------------------------------------------------
+-module(iot_udp_handler).
+-author("aresei").
+
+%% API
+-export([start_link/2, loop/2]).
+
+start_link(Transport, Peer) ->
+    {ok, spawn_link(?MODULE, loop, [Transport, Peer])}.
+
+loop(Transport = {udp, Server, _Sock}, Peer) ->
+    receive
+        {datagram, Server, <<Len:16, HostUUID:Len/binary>>} ->
+            lager:debug("[iot_udp_server] peer: ~p, get heartbeat of: ~p", [esockd:format(Peer), HostUUID]),
+            Pid = iot_host:get_pid(HostUUID),
+            iot_host:heartbeat(Pid),
+            loop(Transport, Peer);
+        {datagram, Server, _} ->
+            exit(normal)
+    end.