aboutsummaryrefslogtreecommitdiffstats
path: root/test/stream_handler_SUITE.erl
blob: 46a05b205f56edb4c166ac0106e13787c692d04f (plain) (blame)
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
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
%% Copyright (c) 2017, 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(stream_handler_SUITE).
-compile(export_all).
-compile(nowarn_export_all).

-import(ct_helper, [config/2]).
-import(ct_helper, [doc/1]).
-import(cowboy_test, [gun_open/1]).
-import(cowboy_test, [gun_down/1]).

%% ct.

all() ->
	cowboy_test:common_all().

groups() ->
	cowboy_test:common_groups(ct_helper:all(?MODULE)).

%% We set this module as a logger in order to silence expected errors.
init_per_group(Name = http, Config) ->
	cowboy_test:init_http(Name, #{
		logger => ?MODULE,
		stream_handlers => [stream_handler_h]
	}, Config);
init_per_group(Name = https, Config) ->
	cowboy_test:init_https(Name, #{
		logger => ?MODULE,
		stream_handlers => [stream_handler_h]
	}, Config);
init_per_group(Name = h2, Config) ->
	cowboy_test:init_http2(Name, #{
		logger => ?MODULE,
		stream_handlers => [stream_handler_h]
	}, Config);
init_per_group(Name = h2c, Config) ->
	Config1 = cowboy_test:init_http(Name, #{
		logger => ?MODULE,
		stream_handlers => [stream_handler_h]
	}, Config),
	lists:keyreplace(protocol, 1, Config1, {protocol, http2});
init_per_group(Name = http_compress, Config) ->
	cowboy_test:init_http(Name, #{
		logger => ?MODULE,
		stream_handlers => [cowboy_compress_h, stream_handler_h]
	}, Config);
init_per_group(Name = https_compress, Config) ->
	cowboy_test:init_https(Name, #{
		logger => ?MODULE,
		stream_handlers => [cowboy_compress_h, stream_handler_h]
	}, Config);
init_per_group(Name = h2_compress, Config) ->
	cowboy_test:init_http2(Name, #{
		logger => ?MODULE,
		stream_handlers => [cowboy_compress_h, stream_handler_h]
	}, Config);
init_per_group(Name = h2c_compress, Config) ->
	Config1 = cowboy_test:init_http(Name, #{
		logger => ?MODULE,
		stream_handlers => [cowboy_compress_h, stream_handler_h]
	}, Config),
	lists:keyreplace(protocol, 1, Config1, {protocol, http2}).

end_per_group(Name, _) ->
	cowboy:stop_listener(Name).

%% Logger function silencing the expected crashes.

error("Unhandled exception " ++ _, [error, crash|_]) ->
	ok;
error(Format, Args) ->
	error_logger:error_msg(Format, Args).

%% Tests.

crash_in_init(Config) ->
	doc("Confirm an error is sent when a stream handler crashes in init/3."),
	Self = self(),
	ConnPid = gun_open(Config),
	Ref = gun:get(ConnPid, "/long_polling", [
		{<<"accept-encoding">>, <<"gzip">>},
		{<<"x-test-case">>, <<"crash_in_init">>},
		{<<"x-test-pid">>, pid_to_list(Self)}
	]),
	%% Confirm init/3 is called.
	Pid = receive {Self, P, init, _, _, _} -> P after 1000 -> error(timeout) end,
	%% Confirm terminate/3 is NOT called. We have no state to give to it.
	receive {Self, Pid, terminate, _, _, _} -> error(terminate) after 1000 -> ok end,
	%% Confirm early_error/5 is called in HTTP/1.1's case.
	%% HTTP/2 does not send a response back so there is no early_error call.
	case config(protocol, Config) of
		http -> receive {Self, Pid, early_error, _, _, _, _, _} -> ok after 1000 -> error(timeout) end;
		http2 -> ok
	end,
	%% Receive a 500 error response.
	case gun:await(ConnPid, Ref) of
		{response, fin, 500, _} -> ok;
		{error, {stream_error, {stream_error, internal_error, _}}} -> ok
	end.

crash_in_data(Config) ->
	doc("Confirm an error is sent when a stream handler crashes in data/4."),
	Self = self(),
	ConnPid = gun_open(Config),
	Ref = gun:post(ConnPid, "/long_polling", [
		{<<"accept-encoding">>, <<"gzip">>},
		{<<"content-length">>, <<"6">>},
		{<<"x-test-case">>, <<"crash_in_data">>},
		{<<"x-test-pid">>, pid_to_list(Self)}
	]),
	%% Confirm init/3 is called.
	Pid = receive {Self, P, init, _, _, _} -> P after 1000 -> error(timeout) end,
	%% Send data to make the stream handler crash.
	gun:data(ConnPid, Ref, fin, <<"Hello!">>),
	%% Confirm terminate/3 is called, indicating the stream ended.
	receive {Self, Pid, terminate, _, _, _} -> ok after 1000 -> error(timeout) end,
	%% Receive a 500 error response.
	case gun:await(ConnPid, Ref) of
		{response, fin, 500, _} -> ok;
		{error, {stream_error, {stream_error, internal_error, _}}} -> ok
	end.

crash_in_info(Config) ->
	doc("Confirm an error is sent when a stream handler crashes in info/3."),
	Self = self(),
	ConnPid = gun_open(Config),
	Ref = gun:get(ConnPid, "/long_polling", [
		{<<"accept-encoding">>, <<"gzip">>},
		{<<"x-test-case">>, <<"crash_in_info">>},
		{<<"x-test-pid">>, pid_to_list(Self)}
	]),
	%% Confirm init/3 is called.
	Pid = receive {Self, P, init, _, _, _} -> P after 1000 -> error(timeout) end,
	%% Send a message to make the stream handler crash.
	Pid ! {{Pid, 1}, crash},
	%% Confirm terminate/3 is called, indicating the stream ended.
	receive {Self, Pid, terminate, _, _, _} -> ok after 1000 -> error(timeout) end,
	%% Receive a 500 error response.
	case gun:await(ConnPid, Ref) of
		{response, fin, 500, _} -> ok;
		{error, {stream_error, {stream_error, internal_error, _}}} -> ok
	end.

crash_in_terminate(Config) ->
	doc("Confirm the state is correct when a stream handler crashes in terminate/3."),
	Self = self(),
	ConnPid = gun_open(Config),
	%% Do a first request.
	Ref1 = gun:get(ConnPid, "/hello_world", [
		{<<"accept-encoding">>, <<"gzip">>},
		{<<"x-test-case">>, <<"crash_in_terminate">>},
		{<<"x-test-pid">>, pid_to_list(Self)}
	]),
	%% Confirm init/3 is called.
	Pid = receive {Self, P, init, _, _, _} -> P after 1000 -> error(timeout) end,
	%% Confirm terminate/3 is called.
	receive {Self, Pid, terminate, _, _, _} -> ok after 1000 -> error(timeout) end,
	%% Receive the response.
	{response, nofin, 200, _} = gun:await(ConnPid, Ref1),
	{ok, <<"Hello world!">>} = gun:await_body(ConnPid, Ref1),
	%% Do a second request to make sure the connection state is still good.
	Ref2 = gun:get(ConnPid, "/hello_world", [
		{<<"accept-encoding">>, <<"gzip">>},
		{<<"x-test-case">>, <<"crash_in_terminate">>},
		{<<"x-test-pid">>, pid_to_list(Self)}
	]),
	%% Confirm init/3 is called. The pid shouldn't change.
	receive {Self, Pid, init, _, _, _} -> ok after 1000 -> error(timeout) end,
	%% Confirm terminate/3 is called.
	receive {Self, Pid, terminate, _, _, _} -> ok after 1000 -> error(timeout) end,
	%% Receive the second response.
	{response, nofin, 200, _} = gun:await(ConnPid, Ref2),
	{ok, <<"Hello world!">>} = gun:await_body(ConnPid, Ref2),
	ok.

crash_in_early_error(Config) ->
	case config(protocol, Config) of
		http -> do_crash_in_early_error(Config);
		http2 -> doc("The callback early_error/5 is not currently used for HTTP/2.")
	end.

do_crash_in_early_error(Config) ->
	doc("Confirm an error is sent when a stream handler crashes in early_error/5."
		"The connection is kept open by Cowboy."),
	Self = self(),
	ConnPid = gun_open(Config),
	Ref1 = gun:get(ConnPid, "/long_polling", [
		{<<"accept-encoding">>, <<"gzip">>},
		{<<"x-test-case">>, <<"crash_in_early_error">>},
		{<<"x-test-pid">>, pid_to_list(Self)}
	]),
	%% Confirm init/3 is called.
	Pid = receive {Self, P, init, _, _, _} -> P after 1000 -> error(timeout) end,
	%% Confirm terminate/3 is NOT called. We have no state to give to it.
	receive {Self, Pid, terminate, _, _, _} -> error(terminate) after 1000 -> ok end,
	%% Confirm early_error/5 is called.
	receive {Self, Pid, early_error, _, _, _, _, _} -> ok after 1000 -> error(timeout) end,
	%% Receive a 500 error response.
	{response, fin, 500, _} = gun:await(ConnPid, Ref1),
	%% This error is not fatal. We should be able to repeat it on the same connection.
	Ref2 = gun:get(ConnPid, "/long_polling", [
		{<<"accept-encoding">>, <<"gzip">>},
		{<<"x-test-case">>, <<"crash_in_early_error">>},
		{<<"x-test-pid">>, pid_to_list(Self)}
	]),
	%% Confirm init/3 is called.
	receive {Self, Pid, init, _, _, _} -> ok after 1000 -> error(timeout) end,
	%% Confirm terminate/3 is NOT called. We have no state to give to it.
	receive {Self, Pid, terminate, _, _, _} -> error(terminate) after 1000 -> ok end,
	%% Confirm early_error/5 is called.
	receive {Self, Pid, early_error, _, _, _, _, _} -> ok after 1000 -> error(timeout) end,
	%% Receive a 500 error response.
	{response, fin, 500, _} = gun:await(ConnPid, Ref2),
	ok.

crash_in_early_error_fatal(Config) ->
	case config(protocol, Config) of
		http -> do_crash_in_early_error_fatal(Config);
		http2 -> doc("The callback early_error/5 is not currently used for HTTP/2.")
	end.

do_crash_in_early_error_fatal(Config) ->
	doc("Confirm an error is sent when a stream handler crashes in early_error/5."
		"The error was fatal and the connection is closed by Cowboy."),
	Self = self(),
	ConnPid = gun_open(Config),
	Ref = gun:get(ConnPid, "/long_polling", [
		{<<"accept-encoding">>, <<"gzip">>},
		{<<"host">>, <<"host:port">>},
		{<<"x-test-case">>, <<"crash_in_early_error_fatal">>},
		{<<"x-test-pid">>, pid_to_list(Self)}
	]),
	%% Confirm init/3 is NOT called. The error occurs before we reach this step.
	receive {Self, _, init, _, _, _} -> error(init) after 1000 -> ok end,
	%% Confirm terminate/3 is NOT called. We have no state to give to it.
	receive {Self, _, terminate, _, _, _} -> error(terminate) after 1000 -> ok end,
	%% Confirm early_error/5 is called.
	receive {Self, _, early_error, _, _, _, _, _} -> ok after 1000 -> error(timeout) end,
	%% Receive a 400 error response. We do not send a 500 when
	%% early_error/5 crashes, we send the original error.
	{response, fin, 400, _} = gun:await(ConnPid, Ref),
	%% Confirm the connection gets closed.
	gun_down(ConnPid).

early_error_stream_error_reason(Config) ->
	doc("Confirm that the stream_error given to early_error/5 is consistent between protocols."),
	Self = self(),
	ConnPid = gun_open(Config),
	%% We must use different solutions to hit early_error with a stream_error
	%% reason in both protocols.
	{Method, Headers, Status, Error} = case config(protocol, Config) of
		http -> {<<"GET">>, [{<<"host">>, <<"host:port">>}], 400, protocol_error};
		http2 -> {<<"TRACE">>, [], 501, no_error}
	end,
	Ref = gun:request(ConnPid, Method, "/long_polling", [
		{<<"accept-encoding">>, <<"gzip">>},
		{<<"x-test-case">>, <<"early_error_stream_error_reason">>},
		{<<"x-test-pid">>, pid_to_list(Self)}
	|Headers], <<>>),
	%% Confirm init/3 is NOT called. The error occurs before we reach this step.
	receive {Self, _, init, _, _, _} -> error(init) after 1000 -> ok end,
	%% Confirm terminate/3 is NOT called. We have no state to give to it.
	receive {Self, _, terminate, _, _, _} -> error(terminate) after 1000 -> ok end,
	%% Confirm early_error/5 is called.
	Reason = receive {Self, _, early_error, _, R, _, _, _} -> R after 1000 -> error(timeout) end,
	%% Confirm that the Reason is a {stream_error, Reason, Human}.
	{stream_error, Error, HumanReadable} = Reason,
	true = is_atom(HumanReadable),
	%% Receive a 400 or 501 error response.
	{response, fin, Status, _} = gun:await(ConnPid, Ref),
	ok.

flow_after_body_fully_read(Config) ->
	doc("A flow command may be returned even after the body was read fully."),
	Self = self(),
	ConnPid = gun_open(Config),
	Ref = gun:post(ConnPid, "/long_polling", [
		{<<"x-test-case">>, <<"flow_after_body_fully_read">>},
		{<<"x-test-pid">>, pid_to_list(Self)}
	], <<"Hello world!">>),
	%% Receive a 200 response, sent after the second flow command,
	%% confirming that the flow command was accepted.
	{response, _, 200, _} = gun:await(ConnPid, Ref),
	ok.

set_options_ignore_unknown(Config) ->
	doc("Confirm that unknown options are ignored when using the set_options commands."),
	Self = self(),
	ConnPid = gun_open(Config),
	Ref = gun:get(ConnPid, "/long_polling", [
		{<<"accept-encoding">>, <<"gzip">>},
		{<<"x-test-case">>, <<"set_options_ignore_unknown">>},
		{<<"x-test-pid">>, pid_to_list(Self)}
	]),
	%% Confirm init/3 is called.
	Pid = receive {Self, P, init, _, _, _} -> P after 1000 -> error(timeout) end,
	%% Confirm terminate/3 is called, indicating the stream ended.
	receive {Self, Pid, terminate, _, _, _} -> ok after 1000 -> error(timeout) end,
	%% Confirm the response is sent.
	{response, nofin, 200, _} = gun:await(ConnPid, Ref),
	{ok, _} = gun:await_body(ConnPid, Ref),
	ok.

shutdown_on_stream_stop(Config) ->
	doc("Confirm supervised processes are shutdown when stopping the stream."),
	Self = self(),
	ConnPid = gun_open(Config),
	Ref = gun:get(ConnPid, "/long_polling", [
		{<<"accept-encoding">>, <<"gzip">>},
		{<<"x-test-case">>, <<"shutdown_on_stream_stop">>},
		{<<"x-test-pid">>, pid_to_list(Self)}
	]),
	%% Confirm init/3 is called.
	Pid = receive {Self, P, init, _, _, _} -> P after 1000 -> error(timeout) end,
	%% Receive the pid of the newly started process and monitor it.
	Spawn = receive {Self, Pid, spawned, S} -> S after 1000 -> error(timeout) end,
	MRef = monitor(process, Spawn),
	Spawn ! {Self, ready},
	%% Confirm terminate/3 is called, indicating the stream ended.
	receive {Self, Pid, terminate, _, _, _} -> ok after 1000 -> error(timeout) end,
	%% We should receive a DOWN message soon after (or before) because the stream
	%% handler is stopping the stream immediately after the process started.
	receive {'DOWN', MRef, process, Spawn, shutdown} -> ok after 1000 -> error(timeout) end,
	%% The response is still sent.
	{response, nofin, 200, _} = gun:await(ConnPid, Ref),
	{ok, _} = gun:await_body(ConnPid, Ref),
	ok.

shutdown_on_socket_close(Config) ->
	doc("Confirm supervised processes are shutdown when the socket closes."),
	Self = self(),
	ConnPid = gun_open(Config),
	_ = gun:get(ConnPid, "/long_polling", [
		{<<"accept-encoding">>, <<"gzip">>},
		{<<"x-test-case">>, <<"shutdown_on_socket_close">>},
		{<<"x-test-pid">>, pid_to_list(Self)}
	]),
	%% Confirm init/3 is called.
	Pid = receive {Self, P, init, _, _, _} -> P after 1000 -> error(timeout) end,
	%% Receive the pid of the newly started process and monitor it.
	Spawn = receive {Self, Pid, spawned, S} -> S after 1000 -> error(timeout) end,
	MRef = monitor(process, Spawn),
	Spawn ! {Self, ready},
	%% Close the socket.
	ok = gun:close(ConnPid),
	%% Confirm terminate/3 is called, indicating the stream ended.
	receive {Self, Pid, terminate, _, _, _} -> ok after 1000 -> error(timeout) end,
	%% Confirm we receive a DOWN message for the child process.
	receive {'DOWN', MRef, process, Spawn, shutdown} -> ok after 1000 -> error(timeout) end,
	ok.

shutdown_timeout_on_stream_stop(Config) ->
	doc("Confirm supervised processes are killed "
		"when the shutdown timeout triggers after stopping the stream."),
	Self = self(),
	ConnPid = gun_open(Config),
	Ref = gun:get(ConnPid, "/long_polling", [
		{<<"accept-encoding">>, <<"gzip">>},
		{<<"x-test-case">>, <<"shutdown_timeout_on_stream_stop">>},
		{<<"x-test-pid">>, pid_to_list(Self)}
	]),
	%% Confirm init/3 is called.
	Pid = receive {Self, P, init, _, _, _} -> P after 1000 -> error(timeout) end,
	%% Receive the pid of the newly started process and monitor it.
	Spawn = receive {Self, Pid, spawned, S} -> S after 1000 -> error(timeout) end,
	MRef = monitor(process, Spawn),
	Spawn ! {Self, ready},
	%% Confirm terminate/3 is called, indicating the stream ended.
	receive {Self, Pid, terminate, _, _, _} -> ok after 1000 -> error(timeout) end,
	%% We should NOT receive a DOWN message immediately.
	receive {'DOWN', MRef, process, Spawn, killed} -> error(killed) after 1500 -> ok end,
	%% We should received it now.
	receive {'DOWN', MRef, process, Spawn, killed} -> ok after 1000 -> error(timeout) end,
	%% The response is still sent.
	{response, nofin, 200, _} = gun:await(ConnPid, Ref),
	{ok, _} = gun:await_body(ConnPid, Ref),
	ok.

shutdown_timeout_on_socket_close(Config) ->
	doc("Confirm supervised processes are killed "
		"when the shutdown timeout triggers after the socket has closed."),
	Self = self(),
	ConnPid = gun_open(Config),
	_ = gun:get(ConnPid, "/long_polling", [
		{<<"accept-encoding">>, <<"gzip">>},
		{<<"x-test-case">>, <<"shutdown_timeout_on_socket_close">>},
		{<<"x-test-pid">>, pid_to_list(Self)}
	]),
	%% Confirm init/3 is called.
	Pid = receive {Self, P, init, _, _, _} -> P after 1000 -> error(timeout) end,
	%% Receive the pid of the newly started process and monitor it.
	Spawn = receive {Self, Pid, spawned, S} -> S after 1000 -> error(timeout) end,
	MRef = monitor(process, Spawn),
	Spawn ! {Self, ready},
	%% Close the socket.
	ok = gun:close(ConnPid),
	%% Confirm terminate/3 is called, indicating the stream ended.
	receive {Self, Pid, terminate, _, _, _} -> ok after 1000 -> error(timeout) end,
	%% We should NOT receive a DOWN message immediately.
	receive {'DOWN', MRef, process, Spawn, killed} -> error(killed) after 1500 -> ok end,
	%% We should received it now.
	receive {'DOWN', MRef, process, Spawn, killed} -> ok after 1000 -> error(timeout) end,
	ok.

switch_protocol_after_headers(Config) ->
	case config(protocol, Config) of
		http -> do_switch_protocol_after_response(
			<<"switch_protocol_after_headers">>, Config);
		http2 -> doc("The switch_protocol command is not currently supported for HTTP/2.")
	end.

switch_protocol_after_headers_data(Config) ->
	case config(protocol, Config) of
		http -> do_switch_protocol_after_response(
			<<"switch_protocol_after_headers_data">>, Config);
		http2 -> doc("The switch_protocol command is not currently supported for HTTP/2.")
	end.

switch_protocol_after_response(Config) ->
	case config(protocol, Config) of
		http -> do_switch_protocol_after_response(
			<<"switch_protocol_after_response">>, Config);
		http2 -> doc("The switch_protocol command is not currently supported for HTTP/2.")
	end.

do_switch_protocol_after_response(TestCase, Config) ->
	doc("The 101 informational response must not be sent when a response "
		"has already been sent before the switch_protocol is returned."),
	Self = self(),
	ConnPid = gun_open(Config),
	Ref = gun:get(ConnPid, "/long_polling", [
		{<<"accept-encoding">>, <<"gzip">>},
		{<<"x-test-case">>, TestCase},
		{<<"x-test-pid">>, pid_to_list(Self)}
	]),
	%% Confirm init/3 is called and receive the response.
	Pid = receive {Self, P, init, _, _, _} -> P after 1000 -> error(timeout) end,
	{response, nofin, 200, Headers} = gun:await(ConnPid, Ref),
	Gzipped =
		lists:keyfind(<<"content-encoding">>, 1, Headers)
			=:= {<<"content-encoding">>, <<"gzip">>},
	case TestCase of
		<<"switch_protocol_after_headers">> ->
			ok;
		_ ->
			<<"{}">> = case gun:await_body(ConnPid, Ref) of
				{ok, Body} when Gzipped ->
					zlib:gunzip(Body);
				{ok, Body} ->
					Body
			end,
			ok
	end,
	{error, _} = gun:await(ConnPid, Ref),
	%% Confirm terminate/3 is called.
	receive {Self, Pid, terminate, _, _, _} -> ok after 1000 -> error(timeout) end,
	%% Confirm takeover/7 is called.
	receive {Self, Pid, takeover, _, _, _, _, _, _, _} -> ok after 1000 -> error(timeout) end,
	ok.

terminate_on_socket_close(Config) ->
	doc("Confirm terminate/3 is called when the socket gets closed brutally."),
	Self = self(),
	ConnPid = gun_open(Config),
	Ref = gun:get(ConnPid, "/long_polling", [
		{<<"accept-encoding">>, <<"gzip">>},
		{<<"x-test-case">>, <<"terminate_on_socket_close">>},
		{<<"x-test-pid">>, pid_to_list(Self)}
	]),
	%% Confirm init/3 is called and receive the beginning of the response.
	Pid = receive {Self, P, init, _, _, _} -> P after 1000 -> error(timeout) end,
	{response, nofin, 200, _} = gun:await(ConnPid, Ref),
	%% Close the socket.
	ok = gun:close(ConnPid),
	%% Confirm terminate/3 is called.
	receive {Self, Pid, terminate, _, _, _} -> ok after 1000 -> error(timeout) end,
	ok.

terminate_on_stop(Config) ->
	doc("Confirm terminate/3 is called after stop is returned."),
	Self = self(),
	ConnPid = gun_open(Config),
	Ref = gun:get(ConnPid, "/long_polling", [
		{<<"accept-encoding">>, <<"gzip">>},
		{<<"x-test-case">>, <<"terminate_on_stop">>},
		{<<"x-test-pid">>, pid_to_list(Self)}
	]),
	%% Confirm init/3 is called and receive the response.
	Pid = receive {Self, P, init, _, _, _} -> P after 1000 -> error(timeout) end,
	{response, fin, 204, _} = gun:await(ConnPid, Ref),
	%% Confirm the stream is still alive even though we
	%% received the response fully, and tell it to stop.
	Pid ! {{Pid, 1}, please_stop},
	receive {Self, Pid, info, _, please_stop, _} -> ok after 1000 -> error(timeout) end,
	%% Confirm terminate/3 is called.
	receive {Self, Pid, terminate, _, _, _} -> ok after 1000 -> error(timeout) end,
	ok.

terminate_on_switch_protocol(Config) ->
	case config(protocol, Config) of
		http -> do_terminate_on_switch_protocol(Config);
		http2 -> doc("The switch_protocol command is not currently supported for HTTP/2.")
	end.

do_terminate_on_switch_protocol(Config) ->
	doc("Confirm terminate/3 is called after switch_protocol is returned."),
	Self = self(),
	ConnPid = gun_open(Config),
	Ref = gun:get(ConnPid, "/long_polling", [
		{<<"accept-encoding">>, <<"gzip">>},
		{<<"x-test-case">>, <<"terminate_on_switch_protocol">>},
		{<<"x-test-pid">>, pid_to_list(Self)}
	]),
	%% Confirm init/3 is called and receive the response.
	Pid = receive {Self, P, init, _, _, _} -> P after 1000 -> error(timeout) end,
	{inform, 101, _} = gun:await(ConnPid, Ref),
	%% Confirm terminate/3 is called.
	receive {Self, Pid, terminate, _, _, _} -> ok after 1000 -> error(timeout) end,
	%% Confirm takeover/7 is called.
	receive {Self, Pid, takeover, _, _, _, _, _, _, _} -> ok after 1000 -> error(timeout) end,
	ok.