From 1be0151ec7b6a98064e648d5598f56cbdec65dc7 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Lo=C3=AFc=20Hoguin?= Date: Sun, 3 Jun 2018 21:11:28 +0200 Subject: Rename gun_data and gun_sse to gun_data_h and gun_sse_h --- src/gun_sse_h.erl | 55 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 55 insertions(+) create mode 100644 src/gun_sse_h.erl (limited to 'src/gun_sse_h.erl') diff --git a/src/gun_sse_h.erl b/src/gun_sse_h.erl new file mode 100644 index 0000000..a2ac809 --- /dev/null +++ b/src/gun_sse_h.erl @@ -0,0 +1,55 @@ +%% Copyright (c) 2017, Loïc Hoguin +%% +%% 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_sse_h). +-behavior(gun_content_handler). + +-export([init/5]). +-export([handle/3]). + +-record(state, { + reply_to :: pid(), + stream_ref :: reference(), + sse_state :: cow_sse:state() +}). + +%% @todo In the future we want to allow different media types. +%% @todo For text/event-stream specifically, the parameters must be ignored. + +-spec init(pid(), reference(), _, cow_http:headers(), _) + -> {ok, #state{}} | disable. +init(ReplyTo, StreamRef, _, Headers, _) -> + case lists:keyfind(<<"content-type">>, 1, Headers) of + {_, <<"text/event-stream">>} -> + {ok, #state{reply_to=ReplyTo, stream_ref=StreamRef, + sse_state=cow_sse:init()}}; + _ -> + disable + end. + +-spec handle(_, binary(), State) -> {done, State} when State::#state{}. +handle(IsFin, Data, State=#state{reply_to=ReplyTo, stream_ref=StreamRef, sse_state=SSE0}) -> + case cow_sse:parse(Data, SSE0) of + {event, Event, SSE} -> + ReplyTo ! {gun_sse, self(), StreamRef, Event}, + handle(IsFin, <<>>, State#state{sse_state=SSE}); + {more, SSE} -> + _ = case IsFin of + fin -> + ReplyTo ! {gun_sse, self(), StreamRef, fin}; + _ -> + ok + end, + {done, State#state{sse_state=SSE}} + end. -- cgit v1.2.3