diff options
| -rw-r--r-- | lib/ssl/src/tls_connection.erl | 90 |
1 files changed, 55 insertions, 35 deletions
diff --git a/lib/ssl/src/tls_connection.erl b/lib/ssl/src/tls_connection.erl index b848f82575..b88c7292a7 100644 --- a/lib/ssl/src/tls_connection.erl +++ b/lib/ssl/src/tls_connection.erl @@ -142,32 +142,60 @@ pids(#state{protocol_specific = #{sender := Sender}}) -> %%==================================================================== %% State transition handling %%==================================================================== -next_record(#state{handshake_env = +next_record(_, #state{handshake_env = #handshake_env{unprocessed_handshake_events = N} = HsEnv} = State) when N > 0 -> {no_record, State#state{handshake_env = HsEnv#handshake_env{unprocessed_handshake_events = N-1}}}; -next_record(#state{protocol_buffers = - #protocol_buffers{tls_cipher_texts = [_|_] = CipherTexts}, - connection_states = ConnectionStates, - ssl_options = #ssl_options{padding_check = Check}} = State) -> +next_record(_, #state{protocol_buffers = + #protocol_buffers{tls_cipher_texts = [_|_] = CipherTexts}, + connection_states = ConnectionStates, + ssl_options = #ssl_options{padding_check = Check}} = State) -> next_record(State, CipherTexts, ConnectionStates, Check); -next_record(#state{protocol_buffers = #protocol_buffers{tls_cipher_texts = []}, - protocol_specific = #{active_n_toggle := true, active_n := N} = ProtocolSpec, - static_env = #static_env{socket = Socket, - close_tag = CloseTag, - transport_cb = Transport} - } = State) -> - case tls_socket:setopts(Transport, Socket, [{active, N}]) of - ok -> - {no_record, State#state{protocol_specific = ProtocolSpec#{active_n_toggle => false}}}; - _ -> - self() ! {CloseTag, Socket}, - {no_record, State} - end; -next_record(State) -> +next_record(connection, #state{protocol_buffers = #protocol_buffers{tls_cipher_texts = []}, + protocol_specific = #{active_n_toggle := true} + } = State) -> + %% If ssl application user is not reading data wait to activate socket + flow_ctrl(State); + +next_record(_, #state{protocol_buffers = #protocol_buffers{tls_cipher_texts = []}, + protocol_specific = #{active_n_toggle := true} + } = State) -> + activate_socket(State); +next_record(_, State) -> {no_record, State}. + +flow_ctrl(#state{user_data_buffer = {_,Size,_}, + socket_options = #socket_options{active = false}, + bytes_to_read = undefined} = State) when Size =/= 0 -> + {no_record, State}; +flow_ctrl(#state{user_data_buffer = {_,Size,_}, + socket_options = #socket_options{active = false}, + bytes_to_read = 0} = State) when Size =/= 0 -> + {no_record, State}; +flow_ctrl(#state{user_data_buffer = {_,Size,_}, + socket_options = #socket_options{active = false}, + bytes_to_read = BytesToRead} = State) when (Size >= BytesToRead) andalso + (BytesToRead > 0) -> + {no_record, State}; +flow_ctrl(State) -> + activate_socket(State). + + +activate_socket(#state{protocol_specific = #{active_n_toggle := true, active_n := N} = ProtocolSpec, + static_env = #static_env{socket = Socket, + close_tag = CloseTag, + transport_cb = Transport} + } = State) -> + case tls_socket:setopts(Transport, Socket, [{active, N}]) of + ok -> + {no_record, State#state{protocol_specific = ProtocolSpec#{active_n_toggle => false}}}; + _ -> + self() ! {CloseTag, Socket}, + {no_record, State} + end. + %% Decipher next record and concatenate consecutive ?APPLICATION_DATA records into one %% next_record(State, CipherTexts, ConnectionStates, Check) -> @@ -198,28 +226,20 @@ next_record_done(#state{protocol_buffers = Buffers} = State, CipherTexts, Connec State#state{protocol_buffers = Buffers#protocol_buffers{tls_cipher_texts = CipherTexts}, connection_states = ConnectionStates}}. - next_event(StateName, Record, State) -> next_event(StateName, Record, State, []). %% next_event(StateName, no_record, State0, Actions) -> - case next_record(State0) of + case next_record(StateName, State0) of {no_record, State} -> {next_state, StateName, State, Actions}; - {#ssl_tls{} = Record, State} -> - {next_state, StateName, State, [{next_event, internal, {protocol_record, Record}} | Actions]}; - #alert{} = Alert -> - {next_state, StateName, State0, [{next_event, internal, Alert} | Actions]} + {Record, State} -> + next_event(StateName, Record, State, Actions) end; -next_event(StateName, Record, State, Actions) -> - case Record of - no_record -> - {next_state, StateName, State, Actions}; - #ssl_tls{} = Record -> - {next_state, StateName, State, [{next_event, internal, {protocol_record, Record}} | Actions]}; - #alert{} = Alert -> - {next_state, StateName, State, [{next_event, internal, Alert} | Actions]} - end. +next_event(StateName, #ssl_tls{} = Record, State, Actions) -> + {next_state, StateName, State, [{next_event, internal, {protocol_record, Record}} | Actions]}; +next_event(StateName, #alert{} = Alert, State, Actions) -> + {next_state, StateName, State, [{next_event, internal, Alert} | Actions]}. %%% TLS record protocol level application data messages @@ -869,7 +889,7 @@ next_tls_record(Data, StateName, case tls_record:get_tls_records(Data, Versions, Buf0) of {Records, Buf1} -> CT1 = CT0 ++ Records, - next_record(State0#state{protocol_buffers = + next_record(StateName, State0#state{protocol_buffers = Buffers#protocol_buffers{tls_record_buffer = Buf1, tls_cipher_texts = CT1}}); #alert{} = Alert -> |