1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
|
%% This module returns a different value in websocket_init/1 depending on the query string.
-module(ws_init_h).
-behavior(cowboy_websocket).
-export([init/2]).
-export([websocket_init/1]).
-export([websocket_handle/2]).
-export([websocket_info/2]).
init(Req, _) ->
State = binary_to_atom(cowboy_req:qs(Req), latin1),
{cowboy_websocket, Req, State}.
%% Sleep to make sure the HTTP response was sent.
websocket_init(State) ->
timer:sleep(100),
do_websocket_init(State).
do_websocket_init(State=ok) ->
{ok, State};
do_websocket_init(State=ok_hibernate) ->
{ok, State, hibernate};
do_websocket_init(State=reply) ->
{reply, {text, "Hello"}, State};
do_websocket_init(State=reply_hibernate) ->
{reply, {text, "Hello"}, State, hibernate};
do_websocket_init(State=reply_close) ->
{reply, close, State};
do_websocket_init(State=reply_close_hibernate) ->
{reply, close, State, hibernate};
do_websocket_init(State=reply_many) ->
{reply, [{text, "Hello"}, {binary, "World"}], State};
do_websocket_init(State=reply_many_hibernate) ->
{reply, [{text, "Hello"}, {binary, "World"}], State, hibernate};
do_websocket_init(State=reply_many_close) ->
{reply, [{text, "Hello"}, close], State};
do_websocket_init(State=reply_many_close_hibernate) ->
{reply, [{text, "Hello"}, close], State, hibernate};
do_websocket_init(State=stop) ->
{stop, State}.
websocket_handle(_, State) ->
{ok, State}.
websocket_info(_, State) ->
{ok, State}.
|