1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
|
%% Feel free to use, reuse and abuse the code in this file.
%% @doc EventSource emitter.
-module(eventsource_handler).
-export([init/2]).
-export([info/3]).
init(Req, Opts) ->
Headers = [{<<"content-type">>, <<"text/event-stream">>}],
Req2 = cowboy_req:chunked_reply(200, Headers, Req),
erlang:send_after(1000, self(), {message, "Tick"}),
{cowboy_loop, Req2, Opts, 5000}.
info({message, Msg}, Req, State) ->
cowboy_req:chunk(["id: ", id(), "\ndata: ", Msg, "\n\n"], Req),
erlang:send_after(1000, self(), {message, "Tick"}),
{ok, Req, State}.
id() ->
integer_to_list(erlang:unique_integer([positive, monotonic]), 16).
|
