%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 1999-2016. All Rights Reserved.
%%
%% Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
%% You may obtain a copy of the License at
%%
%% http://www.apache.org/licenses/LICENSE-2.0
%%
%% Unless required by applicable law or agreed to in writing, software
%% distributed under the License is distributed on an "AS IS" BASIS,
%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
%% See the License for the specific language governing permissions and
%% limitations under the License.
%%
%% %CopyrightEnd%
%%
%%
%%% Purpose : Reflect DTLS specific API options (fairly simple wrapper at the moment)
%% First implementation will support DTLS connections only in a "TLS/TCP like way"
-module(dtls).
-include("ssl_api.hrl").
-include("ssl_internal.hrl").
-export([connect/2, connect/3, listen/2, accept/1, accept/2,
handshake/1, handshake/2, handshake/3]).
%%--------------------------------------------------------------------
%%
%% Description: Connect to a DTLS server.
%%--------------------------------------------------------------------
-spec connect(host() | port(), [connect_option()]) -> {ok, #sslsocket{}} |
{error, reason()}.
connect(Socket, Options) when is_port(Socket) ->
connect(Socket, Options, infinity).
-spec connect(host() | port(), [connect_option()] | inet:port_number(),
timeout() | list()) ->
{ok, #sslsocket{}} | {error, reason()}.
connect(Socket, SslOptions, Timeout) when is_port(Socket) ->
DTLSOpts = [{protocol, dtls} | SslOptions],
ssl:connect(Socket, DTLSOpts, Timeout);
connect(Host, Port, Options) ->
connect(Host, Port, Options, infinity).
-spec connect(host() | port(), inet:port_number(), list(), timeout()) ->
{ok, #sslsocket{}} | {error, reason()}.
connect(Host, Port, Options, Timeout) ->
DTLSOpts = [{protocol, dtls} | Options],
ssl:connect(Host, Port, DTLSOpts, Timeout).
%%--------------------------------------------------------------------
-spec listen(inet:port_number(), [listen_option()]) ->{ok, #sslsocket{}} | {error, reason()}.
%%
%% Description: Creates an ssl listen socket.
%%--------------------------------------------------------------------
listen(Port, Options) ->
DTLSOpts = [{protocol, dtls} | Options],
ssl:listen(Port, DTLSOpts).
%%--------------------------------------------------------------------
%%
%% Description: Performs transport accept on an ssl listen socket
%%--------------------------------------------------------------------
-spec accept(#sslsocket{}) -> {ok, #sslsocket{}} |
{error, reason()}.
accept(ListenSocket) ->
accept(ListenSocket, infinity).
-spec accept(#sslsocket{}, timeout()) -> {ok, #sslsocket{}} |
{error, reason()}.
accept(Socket, Timeout) ->
ssl:transport_accept(Socket, Timeout).
%%--------------------------------------------------------------------
%%
%% Description: Performs accept on an ssl listen socket. e.i. performs
%% ssl handshake.
%%--------------------------------------------------------------------
-spec handshake(#sslsocket{}) -> ok | {error, reason()}.
handshake(ListenSocket) ->
handshake(ListenSocket, infinity).
-spec handshake(#sslsocket{} | port(), timeout()| [ssl_option()
| transport_option()]) ->
ok | {ok, #sslsocket{}} | {error, reason()}.
handshake(#sslsocket{} = Socket, Timeout) ->
ssl:ssl_accept(Socket, Timeout);
handshake(ListenSocket, SslOptions) when is_port(ListenSocket) ->
handshake(ListenSocket, SslOptions, infinity).
-spec handshake(port(), [ssl_option()| transport_option()], timeout()) ->
{ok, #sslsocket{}} | {error, reason()}.
handshake(Socket, SslOptions, Timeout) when is_port(Socket) ->
ssl:ssl_accept(Socket, SslOptions, Timeout).
