fix udp server

apps/dns_proxy/src/dns_proxy_sup.erl

@@ -35,6 +35,14 @@ init([]) ->
             shutdown => 2000,
             type => supervisor,
             modules => ['dns_handler_sup']
+        },
+        #{
+            id => dns_server,
+            start => {dns_server, start_link, []},
+            restart => permanent,
+            shutdown => 2000,
+            type => worker,
+            modules => ['dns_server']
         }
     ],
     {ok, {SupFlags, ChildSpecs}}.

apps/dns_proxy/src/dns_server.erl

@@ -1,11 +1,14 @@
 -module(dns_server).
--export([start/0, stop/0]).
+-export([start_link/0, init/0]).
 
--define(LISTEN_PORT, 53).
+-define(LISTEN_PORT, 15353).
 
-start() ->
+start_link() ->
+    {ok, spawn_link(?MODULE, init, [])}.
+
+init() ->
     dns_cache:init(),
-    dns_zone_loader:load("priv/local.zone"),
+    %dns_zone_loader:load("priv/local.zone"),
 
     %% 配置上游 DNS
     Upstreams = [
@@ -18,10 +21,6 @@ start() ->
     io:format("DNS Forwarder started on UDP port ~p~n", [?LISTEN_PORT]),
     loop(Sock).
 
-stop() ->
-    gen_udp:close(?LISTEN_PORT),
-    ok.
-
 loop(Sock) ->
     receive
         {udp, Sock, Ip, Port, Packet} ->