diff options
Diffstat (limited to 'lib/ssl/src/dtls_udp_listener.erl')
| -rw-r--r-- | lib/ssl/src/dtls_udp_listener.erl | 64 |
1 files changed, 54 insertions, 10 deletions
diff --git a/lib/ssl/src/dtls_udp_listener.erl b/lib/ssl/src/dtls_udp_listener.erl index b7f115582e..f0ace2d887 100644 --- a/lib/ssl/src/dtls_udp_listener.erl +++ b/lib/ssl/src/dtls_udp_listener.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2016-2016. All Rights Reserved. +%% Copyright Ericsson AB 2016-2017. All Rights Reserved. %% %% The contents of this file are subject to the Erlang Public License, %% Version 1.1, (the "License"); you may not use this file except in @@ -24,7 +24,8 @@ -behaviour(gen_server). %% API --export([start_link/4, active_once/3, accept/2, sockname/1]). +-export([start_link/4, active_once/3, accept/2, sockname/1, close/1, + get_all_opts/1]). %% gen_server callbacks -export([init/1, handle_call/3, handle_cast/2, handle_info/2, @@ -39,7 +40,8 @@ clients = set_new(), dtls_processes = kv_new(), accepters = queue:new(), - first + first, + close }). %%%=================================================================== @@ -53,10 +55,14 @@ active_once(UDPConnection, Client, Pid) -> gen_server:cast(UDPConnection, {active_once, Client, Pid}). accept(UDPConnection, Accepter) -> - gen_server:call(UDPConnection, {accept, Accepter}, infinity). + call(UDPConnection, {accept, Accepter}). sockname(UDPConnection) -> - gen_server:call(UDPConnection, sockname, infinity). + call(UDPConnection, sockname). +close(UDPConnection) -> + call(UDPConnection, close). +get_all_opts(UDPConnection) -> + call(UDPConnection, get_all_opts). %%%=================================================================== %%% gen_server callbacks @@ -69,10 +75,13 @@ init([Port, EmOpts, InetOptions, DTLSOptions]) -> first = true, dtls_options = DTLSOptions, emulated_options = EmOpts, - listner = Socket}} + listner = Socket, + close = false}} catch _:_ -> {error, closed} end. +handle_call({accept, _}, _, #state{close = true} = State) -> + {reply, {error, closed}, State}; handle_call({accept, Accepter}, From, #state{first = true, accepters = Accepters, @@ -87,7 +96,21 @@ handle_call({accept, Accepter}, From, #state{accepters = Accepters} = State0) -> {noreply, State}; handle_call(sockname, _, #state{listner = Socket} = State) -> Reply = inet:sockname(Socket), - {reply, Reply, State}. + {reply, Reply, State}; +handle_call(close, _, #state{dtls_processes = Processes, + accepters = Accepters} = State) -> + case kv_empty(Processes) of + true -> + {stop, normal, ok, State#state{close=true}}; + false -> + lists:foreach(fun({_, From}) -> + gen_server:reply(From, {error, closed}) + end, queue:to_list(Accepters)), + {reply, ok, State#state{close = true, accepters = queue:new()}} + end; +handle_call(get_all_opts, _, #state{dtls_options = DTLSOptions, + emulated_options = EmOpts} = State) -> + {reply, {ok, EmOpts, DTLSOptions}, State}. handle_cast({active_once, Client, Pid}, State0) -> State = handle_active_once(Client, Pid, State0), @@ -99,11 +122,17 @@ handle_info({udp, Socket, IP, InPortNo, _} = Msg, #state{listner = Socket} = Sta {noreply, State}; handle_info({'DOWN', _, process, Pid, _}, #state{clients = Clients, - dtls_processes = Processes0} = State) -> + dtls_processes = Processes0, + close = ListenClosed} = State) -> Client = kv_get(Pid, Processes0), Processes = kv_delete(Pid, Processes0), - {noreply, State#state{clients = set_delete(Client, Clients), - dtls_processes = Processes}}. + case ListenClosed andalso kv_empty(Processes) of + true -> + {stop, normal, State}; + false -> + {noreply, State#state{clients = set_delete(Client, Clients), + dtls_processes = Processes}} + end. terminate(_Reason, _State) -> ok. @@ -182,6 +211,7 @@ setup_new_connection(User, From, Client, Msg, #state{dtls_processes = Processes, gen_server:reply(From, {error, Reason}), State end. + kv_update(Key, Value, Store) -> gb_trees:update(Key, Value, Store). kv_lookup(Key, Store) -> @@ -194,6 +224,8 @@ kv_delete(Key, Store) -> gb_trees:delete(Key, Store). kv_new() -> gb_trees:empty(). +kv_empty(Store) -> + gb_trees:is_empty(Store). set_new() -> gb_sets:empty(). @@ -203,3 +235,15 @@ set_delete(Item, Set) -> gb_sets:delete(Item, Set). set_is_member(Item, Set) -> gb_sets:is_member(Item, Set). + +call(Server, Msg) -> + try + gen_server:call(Server, Msg, infinity) + catch + exit:{noproc, _} -> + {error, closed}; + exit:{normal, _} -> + {error, closed}; + exit:{{shutdown, _},_} -> + {error, closed} + end. |