diff options
Diffstat (limited to 'lib/ssl/src/dtls_connection.erl')
| -rw-r--r-- | lib/ssl/src/dtls_connection.erl | 49 |
1 files changed, 35 insertions, 14 deletions
diff --git a/lib/ssl/src/dtls_connection.erl b/lib/ssl/src/dtls_connection.erl index 073cb4009b..03725089dd 100644 --- a/lib/ssl/src/dtls_connection.erl +++ b/lib/ssl/src/dtls_connection.erl @@ -143,10 +143,16 @@ next_record(#state{role = server, dtls_udp_listener:active_once(Listener, Client, self()), {no_record, State}; next_record(#state{role = client, - socket = {_Server, Socket}, + socket = {_Server, Socket} = DTLSSocket, + close_tag = CloseTag, transport_cb = Transport} = State) -> - dtls_socket:setopts(Transport, Socket, [{active,once}]), - {no_record, State}; + case dtls_socket:setopts(Transport, Socket, [{active,once}]) of + ok -> + {no_record, State}; + _ -> + self() ! {CloseTag, DTLSSocket}, + {no_record, State} + end; next_record(State) -> {no_record, State}. @@ -218,12 +224,12 @@ next_event(StateName, Record, #state{connection_states = #{current_read := #{epoch := CurrentEpoch}}} = State0, Actions) -> case Record of no_record -> - {next_state, StateName, State0, Actions}; + {next_state, StateName, State0, Actions}; #ssl_tls{epoch = CurrentEpoch, version = Version} = Record -> State = dtls_version(StateName, Version, State0), - {next_state, StateName, State, - [{next_event, internal, {protocol_record, Record}} | Actions]}; + {next_state, StateName, State, + [{next_event, internal, {protocol_record, Record}} | Actions]}; #ssl_tls{epoch = _Epoch, version = _Version} = _Record -> %% TODO maybe buffer later epoch @@ -604,6 +610,12 @@ certify(info, Event, State) -> gen_info(Event, ?FUNCTION_NAME, State); certify(internal = Type, #server_hello_done{} = Event, State) -> ssl_connection:certify(Type, Event, prepare_flight(State), ?MODULE); +certify(internal, #change_cipher_spec{type = <<1>>}, State0) -> + {State1, Actions0} = send_handshake_flight(State0, retransmit_epoch(?FUNCTION_NAME, State0)), + {Record, State2} = next_record(State1), + {next_state, ?FUNCTION_NAME, State, Actions} = next_event(?FUNCTION_NAME, Record, State2, Actions0), + %% This will reset the retransmission timer by repeating the enter state event + {repeat_state, State, Actions}; certify(state_timeout, Event, State) -> handle_state_timeout(Event, ?FUNCTION_NAME, State); certify(Type, Event, State) -> @@ -746,10 +758,12 @@ initial_state(Role, Host, Port, Socket, {SSLOptions, SocketOptions, _}, User, flight_state = {retransmit, ?INITIAL_RETRANSMIT_TIMEOUT} }. -next_dtls_record(Data, #state{protocol_buffers = #protocol_buffers{ +next_dtls_record(Data, StateName, #state{protocol_buffers = #protocol_buffers{ dtls_record_buffer = Buf0, dtls_cipher_texts = CT0} = Buffers} = State0) -> - case dtls_record:get_dtls_records(Data, Buf0) of + case dtls_record:get_dtls_records(Data, + acceptable_record_versions(StateName, State0), + Buf0) of {Records, Buf1} -> CT1 = CT0 ++ Records, next_record(State0#state{protocol_buffers = @@ -759,6 +773,11 @@ next_dtls_record(Data, #state{protocol_buffers = #protocol_buffers{ Alert end. +acceptable_record_versions(hello, _) -> + [dtls_record:protocol_version(Vsn) || Vsn <- ?ALL_DATAGRAM_SUPPORTED_VERSIONS]; +acceptable_record_versions(_, #state{negotiated_version = Version}) -> + [Version]. + dtls_handshake_events(Packets) -> lists:map(fun(Packet) -> {next_event, internal, {handshake, Packet}} @@ -816,7 +835,7 @@ handle_client_hello(#client_hello{client_version = ClientVersion} = Hello, %% raw data from socket, unpack records handle_info({Protocol, _, _, _, Data}, StateName, #state{data_tag = Protocol} = State0) -> - case next_dtls_record(Data, State0) of + case next_dtls_record(Data, StateName, State0) of {Record, State} -> next_event(StateName, Record, State); #alert{} = Alert -> @@ -863,12 +882,14 @@ handle_info(new_cookie_secret, StateName, handle_info(Msg, StateName, State) -> ssl_connection:StateName(info, Msg, State, ?MODULE). -handle_state_timeout(flight_retransmission_timeout, StateName, - #state{flight_state = {retransmit, NextTimeout}} = State0) -> - {State1, Actions} = send_handshake_flight(State0#state{flight_state = {retransmit, NextTimeout}}, +handle_state_timeout(flight_retransmission_timeout, StateName, + #state{flight_state = {retransmit, NextTimeout}} = State0) -> + {State1, Actions0} = send_handshake_flight(State0#state{flight_state = {retransmit, NextTimeout}}, retransmit_epoch(StateName, State0)), - {Record, State} = next_record(State1), - next_event(StateName, Record, State, Actions). + {Record, State2} = next_record(State1), + {next_state, StateName, State, Actions} = next_event(StateName, Record, State2, Actions0), + %% This will reset the retransmission timer by repeating the enter state event + {repeat_state, State, Actions}. handle_alerts([], Result) -> Result; |