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%% Copyright (c) 2019, Loïc Hoguin <[email protected]>
%%
%% Permission to use, copy, modify, and/or distribute this software for any
%% purpose with or without fee is hereby granted, provided that the above
%% copyright notice and this permission notice appear in all copies.
%%
%% THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
%% WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
%% MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
%% ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
%% WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
%% ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
%% OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-module(gun_raw).
-export([check_options/1]).
-export([name/0]).
-export([opts_name/0]).
-export([has_keepalive/0]).
-export([init/4]).
-export([handle/4]).
-export([closing/4]).
-export([close/4]).
-export([data/7]).
%% @todo down
-record(raw_state, {
ref :: reference() | undefined,
reply_to :: pid(),
socket :: inet:socket() | ssl:sslsocket(),
transport :: module()
}).
%% @todo Reject ALL options.
check_options(_) ->
ok.
name() -> raw.
opts_name() -> raw_opts.
has_keepalive() -> false.
init(ReplyTo, Socket, Transport, Opts) ->
StreamRef = maps:get(stream_ref, Opts, undefined),
{connected_data_only, #raw_state{ref=StreamRef, reply_to=ReplyTo, socket=Socket, transport=Transport}}.
handle(Data, State=#raw_state{ref=StreamRef, reply_to=ReplyTo}, _, EvHandlerState) ->
%% When we take over the entire connection there is no stream reference.
ReplyTo ! {gun_data, self(), StreamRef, nofin, Data},
{{state, State}, EvHandlerState}.
%% We can always close immediately.
closing(_, _, _, EvHandlerState) ->
{close, EvHandlerState}.
close(_, _, _, EvHandlerState) ->
EvHandlerState.
%% @todo Initiate closing on IsFin=fin.
data(State=#raw_state{socket=Socket, transport=Transport}, undefined,
_ReplyTo, _IsFin, Data, _EvHandler, EvHandlerState) ->
Transport:send(Socket, Data),
{State, EvHandlerState}.
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