diff --git a/src/sdlan_domain_regedit.erl b/src/sdlan_domain_regedit.erl
index 7fe64df..dcefca0 100644
--- a/src/sdlan_domain_regedit.erl
+++ b/src/sdlan_domain_regedit.erl
@@ -31,6 +31,6 @@ maybe_domain(QName) when is_binary(QName) ->
             false
     end.
 
--spec insert(Domain :: binary()) -> no_return().
+-spec insert(Domain :: binary()) -> true.
 insert(Domain) when is_binary(Domain) ->
-    true = ets:insert(?TABLE, {Domain}).
\ No newline at end of file
+    true = ets:insert(?TABLE, {Domain}).
diff --git a/src/sdlan_hostname_regedit.erl b/src/sdlan_hostname_regedit.erl
index 0acb7a4..843045c 100644
--- a/src/sdlan_hostname_regedit.erl
+++ b/src/sdlan_hostname_regedit.erl
@@ -27,11 +27,11 @@ lookup(FullHostname) when is_binary(FullHostname) ->
             error
     end.
 
--spec insert(any(), Domain :: binary(), Ip :: integer()) -> no_return().
+-spec insert(any(), Domain :: binary(), Ip :: integer()) -> true | ok.
 insert(HostName, Domain, Ip) when is_binary(HostName), is_binary(Domain), is_integer(Ip), HostName /= <<>> ->
     FullHostname = <<HostName/binary, ".", Domain/binary>>,
     LowerFullHostname = string:lowercase(FullHostname),
     <<Ip0, Ip1, Ip2, Ip3>> = <<Ip:32>>,
     true = ets:insert(?TABLE, {LowerFullHostname, {Ip0, Ip1, Ip2, Ip3}});
 insert(_, _, _) ->
-    ok.
\ No newline at end of file
+    ok.
diff --git a/src/sdlan_network.erl b/src/sdlan_network.erl
index 7f25434..bf49e1e 100644
--- a/src/sdlan_network.erl
+++ b/src/sdlan_network.erl
@@ -10,6 +10,7 @@
 -author("anlicheng").
 -include("sdlan.hrl").
 -include("sdlan_pb.hrl").
+-include_lib("stdlib/include/ms_transform.hrl").
 
 -behaviour(gen_server).
 
@@ -94,7 +95,7 @@ get_network_id(Pid) when is_pid(Pid) ->
 attach(Pid, ChannelPid, ClientId, Mac, Ip, Hostname) when is_pid(Pid), is_pid(ChannelPid), is_binary(ClientId), is_binary(Mac), is_integer(Ip), is_binary(Hostname) ->
     gen_server:call(Pid, {attach, ChannelPid, ClientId, Mac, Ip, Hostname}).
 
--spec unregister(Pid :: pid(), ClientId :: binary(), Mac :: binary()) -> no_return().
+-spec unregister(Pid :: pid(), ClientId :: binary(), Mac :: binary()) -> ok.
 unregister(Pid, ClientId, Mac) when is_pid(Pid), is_binary(ClientId), is_binary(Mac) ->
     gen_server:cast(Pid, {unregister, ClientId, Mac}).
 
@@ -144,7 +145,7 @@ forward_by_ets(NetworkId, Sock, SrcMac, DstMac, Packet) when is_integer(NetworkI
     end.
 
 %% 更新ip地址对应的nat关系
--spec update_hole(Pid :: pid(), SessionToken :: binary(), ClientId :: binary(), Mac :: binary(), Peer :: tuple(), NatType :: integer(), V6Info :: undefined | #'SDLV6Info'{}) -> no_return().
+-spec update_hole(Pid :: pid(), SessionToken :: binary(), ClientId :: binary(), Mac :: binary(), Peer :: tuple(), NatType :: integer(), V6Info :: undefined | #'SDLV6Info'{}) -> ok.
 update_hole(Pid, SessionToken, ClientId, Mac, Peer, NatType, V6Info) when is_pid(Pid), is_binary(ClientId), is_binary(Mac), is_integer(NatType) ->
     gen_server:cast(Pid, {update_hole, SessionToken, ClientId, Mac, Peer, NatType, V6Info}).
 
@@ -236,7 +237,10 @@ handle_call({attach, ChannelPid, ClientId, Mac, Ip, Hostname}, _From,
 
 %% client设置为禁止状态，不允许重连
 handle_call({disable_client, ClientId}, _From, State = #state{endpoint_table = EndpointTable}) ->
-    case match_endpoint(EndpointTable, {'$1', #endpoint{client_id = ClientId, _ = '_'}}) of
+    MatchSpec = ets:fun2ms(fun(Object = {_Mac, #endpoint{client_id = ClientId0}}) when ClientId0 =:= ClientId ->
+        Object
+    end),
+    case select_endpoint(EndpointTable, MatchSpec) of
         {ok, Mac, Endpoint} ->
             cleanup_endpoint(Endpoint, undefined, disabled),
             delete_endpoint(EndpointTable, Mac),
@@ -246,7 +250,10 @@ handle_call({disable_client, ClientId}, _From, State = #state{endpoint_table = E
     end;
 
 handle_call({get_channel, ClientId}, _From, State = #state{endpoint_table = EndpointTable}) ->
-    case match_endpoint(EndpointTable, {'$1', #endpoint{client_id = ClientId, _ = '_'}}) of
+    MatchSpec = ets:fun2ms(fun(Object = {_Mac, #endpoint{client_id = ClientId0}}) when ClientId0 =:= ClientId ->
+        Object
+    end),
+    case select_endpoint(EndpointTable, MatchSpec) of
         {ok, _, #endpoint{channel_pid = ChannelPid}} ->
             {reply, {ok, ChannelPid}, State};
         error ->
@@ -284,7 +291,10 @@ handle_call({peer_info, SrcMac, DstMac}, _From, State = #state{endpoint_table =
 
 %% arp查询
 handle_call({arp_request, TargetIp}, _From, State = #state{endpoint_table = EndpointTable}) ->
-    case match_endpoint(EndpointTable, {'$1', #endpoint{ip = TargetIp, _ = '_'}}) of
+    MatchSpec = ets:fun2ms(fun(Object = {_Mac, #endpoint{ip = Ip}}) when Ip =:= TargetIp ->
+        Object
+    end),
+    case select_endpoint(EndpointTable, MatchSpec) of
         error ->
             {reply, error, State};
         {ok, Mac, _} ->
@@ -293,7 +303,10 @@ handle_call({arp_request, TargetIp}, _From, State = #state{endpoint_table = Endp
 
 %% 发送命令
 handle_call({command, ReceiverPid, ClientId, SubCommand}, _From, State = #state{endpoint_table = EndpointTable}) ->
-    case match_endpoint(EndpointTable, {'$1', #endpoint{client_id = ClientId, _ = '_'}}) of
+    MatchSpec = ets:fun2ms(fun(Object = {_Mac, #endpoint{client_id = ClientId0}}) when ClientId0 =:= ClientId ->
+        Object
+    end),
+    case select_endpoint(EndpointTable, MatchSpec) of
         {ok, _Mac, #endpoint{channel_pid = ChannelPid}} ->
             Ref = make_ref(),
             sdlan_quic_channel:command(ChannelPid, Ref, ReceiverPid, SubCommand),
@@ -383,7 +396,7 @@ handle_info(Info, State) ->
 %% necessary cleaning up. When it returns, the gen_server terminates
 %% with Reason. The return value is ignored.
 -spec(terminate(Reason :: (normal | shutdown | {shutdown, term()} | term()),
-    State :: #state{}) -> none()).
+    State :: #state{}) -> ok).
 terminate(Reason, #state{network_id = NetworkId, endpoint_table = EndpointTable}) ->
     broadcast(fun(#endpoint{channel_pid = ChannelPid}) ->
         case is_pid(ChannelPid) andalso is_process_alive(ChannelPid) of
@@ -581,7 +594,7 @@ should_stop_channel(ChannelPid, KeepChannelPid) when is_pid(ChannelPid), Channel
 should_stop_channel(_, _) ->
     false.
 
--spec broadcast(Fun :: fun((#endpoint{}) -> no_return()), ExcludeMacs :: [binary()], Table :: ets:tid()) -> no_return().
+-spec broadcast(Fun :: fun((#endpoint{}) -> term()), ExcludeMacs :: [binary()], Table :: ets:tid()) -> ok.
 broadcast(Fun, ExcludeMacs, Table) when is_function(Fun, 1), is_list(ExcludeMacs) ->
     lists:foreach(fun({Mac, Endpoint}) ->
         case lists:member(Mac, ExcludeMacs) of
@@ -655,9 +668,9 @@ channel_metrics(Table) ->
         end
                 end, [], list_endpoints(Table)).
 
--spec match_endpoint(Table :: ets:tid(), Pattern :: tuple()) -> error | {ok, Mac :: binary(), Endpoint :: #endpoint{}}.
-match_endpoint(Table, Pattern) ->
-    case catch ets:match_object(Table, Pattern, 1) of
+-spec select_endpoint(Table :: ets:tid(), MatchSpec :: ets:match_spec()) -> error | {ok, Mac :: binary(), Endpoint :: #endpoint{}}.
+select_endpoint(Table, MatchSpec) ->
+    case catch ets:select(Table, MatchSpec, 1) of
         {[], _Continuation} ->
             error;
         {[{Mac, Endpoint = #endpoint{}}], _Continuation} ->
diff --git a/src/sdlan_network_coordinator.erl b/src/sdlan_network_coordinator.erl
index 42aedcf..1017e14 100644
--- a/src/sdlan_network_coordinator.erl
+++ b/src/sdlan_network_coordinator.erl
@@ -29,7 +29,7 @@
 %%% API
 %%%===================================================================
 
--spec attach(NetworkPid :: pid(), ThrottleKey :: atom()) -> no_return().
+-spec attach(NetworkPid :: pid(), ThrottleKey :: atom()) -> ok.
 attach(NetworkPid, ThrottleKey) when is_pid(NetworkPid), is_atom(ThrottleKey) ->
     gen_server:cast(?SERVER, {attach, NetworkPid, ThrottleKey}).