1 /*
2 *
3 * Copyright 2017 gRPC authors.
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 *
17 */
18
19 #include "test/core/end2end/end2end_tests.h"
20
21 #include <stdio.h>
22 #include <string.h>
23
24 #include <grpc/byte_buffer.h>
25 #include <grpc/support/alloc.h>
26 #include <grpc/support/log.h>
27 #include <grpc/support/time.h>
28
29 #include "src/core/ext/transport/chttp2/transport/frame_ping.h"
30 #include "src/core/lib/channel/channel_args.h"
31 #include "src/core/lib/gpr/useful.h"
32 #include "src/core/lib/iomgr/exec_ctx.h"
33 #include "src/core/lib/iomgr/iomgr.h"
34 #include "test/core/end2end/cq_verifier.h"
35
36 #ifdef GRPC_POSIX_SOCKET
37 #include "src/core/lib/iomgr/ev_posix.h"
38 #endif // GRPC_POSIX_SOCKET
39
tag(intptr_t t)40 static void* tag(intptr_t t) { return (void*)t; }
41
begin_test(grpc_end2end_test_config config,const char * test_name,grpc_channel_args * client_args,grpc_channel_args * server_args)42 static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
43 const char* test_name,
44 grpc_channel_args* client_args,
45 grpc_channel_args* server_args) {
46 grpc_end2end_test_fixture f;
47 gpr_log(GPR_INFO, "%s/%s", test_name, config.name);
48 f = config.create_fixture(client_args, server_args);
49 config.init_server(&f, server_args);
50 config.init_client(&f, client_args);
51 return f;
52 }
53
n_seconds_from_now(int n)54 static gpr_timespec n_seconds_from_now(int n) {
55 return grpc_timeout_seconds_to_deadline(n);
56 }
57
five_seconds_from_now(void)58 static gpr_timespec five_seconds_from_now(void) {
59 return n_seconds_from_now(5);
60 }
61
drain_cq(grpc_completion_queue * cq)62 static void drain_cq(grpc_completion_queue* cq) {
63 grpc_event ev;
64 do {
65 ev = grpc_completion_queue_next(cq, five_seconds_from_now(), nullptr);
66 } while (ev.type != GRPC_QUEUE_SHUTDOWN);
67 }
68
shutdown_server(grpc_end2end_test_fixture * f)69 static void shutdown_server(grpc_end2end_test_fixture* f) {
70 if (!f->server) return;
71
72 grpc_server_shutdown_and_notify(f->server, f->shutdown_cq, tag(1000));
73 GPR_ASSERT(grpc_completion_queue_pluck(f->shutdown_cq, tag(1000),
74 five_seconds_from_now(), nullptr)
75 .type == GRPC_OP_COMPLETE);
76 grpc_server_destroy(f->server);
77 f->server = nullptr;
78 }
79
shutdown_client(grpc_end2end_test_fixture * f)80 static void shutdown_client(grpc_end2end_test_fixture* f) {
81 if (!f->client) return;
82 grpc_channel_destroy(f->client);
83 f->client = nullptr;
84 }
85
end_test(grpc_end2end_test_fixture * f)86 static void end_test(grpc_end2end_test_fixture* f) {
87 shutdown_server(f);
88 shutdown_client(f);
89
90 grpc_completion_queue_shutdown(f->cq);
91 drain_cq(f->cq);
92 grpc_completion_queue_destroy(f->cq);
93 grpc_completion_queue_destroy(f->shutdown_cq);
94 }
95
96 /* Client sends a request, server replies with a payload, then waits for the
97 keepalive watchdog timeouts before returning status. */
test_keepalive_timeout(grpc_end2end_test_config config)98 static void test_keepalive_timeout(grpc_end2end_test_config config) {
99 grpc_call* c;
100 grpc_call* s;
101 grpc_slice response_payload_slice =
102 grpc_slice_from_copied_string("hello world");
103 grpc_byte_buffer* response_payload =
104 grpc_raw_byte_buffer_create(&response_payload_slice, 1);
105
106 grpc_arg keepalive_arg_elems[3];
107 keepalive_arg_elems[0].type = GRPC_ARG_INTEGER;
108 keepalive_arg_elems[0].key = const_cast<char*>(GRPC_ARG_KEEPALIVE_TIME_MS);
109 keepalive_arg_elems[0].value.integer = 3500;
110 keepalive_arg_elems[1].type = GRPC_ARG_INTEGER;
111 keepalive_arg_elems[1].key = const_cast<char*>(GRPC_ARG_KEEPALIVE_TIMEOUT_MS);
112 keepalive_arg_elems[1].value.integer = 0;
113 keepalive_arg_elems[2].type = GRPC_ARG_INTEGER;
114 keepalive_arg_elems[2].key = const_cast<char*>(GRPC_ARG_HTTP2_BDP_PROBE);
115 keepalive_arg_elems[2].value.integer = 0;
116 grpc_channel_args keepalive_args = {GPR_ARRAY_SIZE(keepalive_arg_elems),
117 keepalive_arg_elems};
118
119 grpc_end2end_test_fixture f =
120 begin_test(config, "keepalive_timeout", &keepalive_args, nullptr);
121 cq_verifier* cqv = cq_verifier_create(f.cq);
122 grpc_op ops[6];
123 grpc_op* op;
124 grpc_metadata_array initial_metadata_recv;
125 grpc_metadata_array trailing_metadata_recv;
126 grpc_metadata_array request_metadata_recv;
127 grpc_byte_buffer* response_payload_recv = nullptr;
128 grpc_call_details call_details;
129 grpc_status_code status;
130 grpc_call_error error;
131 grpc_slice details;
132
133 /* Disable ping ack to trigger the keepalive timeout */
134 grpc_set_disable_ping_ack(true);
135
136 gpr_timespec deadline = five_seconds_from_now();
137 c = grpc_channel_create_call(f.client, nullptr, GRPC_PROPAGATE_DEFAULTS, f.cq,
138 grpc_slice_from_static_string("/foo"), nullptr,
139 deadline, nullptr);
140 GPR_ASSERT(c);
141
142 grpc_metadata_array_init(&initial_metadata_recv);
143 grpc_metadata_array_init(&trailing_metadata_recv);
144 grpc_metadata_array_init(&request_metadata_recv);
145 grpc_call_details_init(&call_details);
146
147 memset(ops, 0, sizeof(ops));
148 op = ops;
149 op->op = GRPC_OP_SEND_INITIAL_METADATA;
150 op->data.send_initial_metadata.count = 0;
151 op++;
152 op->op = GRPC_OP_SEND_CLOSE_FROM_CLIENT;
153 op++;
154 op->op = GRPC_OP_RECV_INITIAL_METADATA;
155 op->data.recv_initial_metadata.recv_initial_metadata = &initial_metadata_recv;
156 op++;
157 op->op = GRPC_OP_RECV_MESSAGE;
158 op->data.recv_message.recv_message = &response_payload_recv;
159 op++;
160 error = grpc_call_start_batch(c, ops, static_cast<size_t>(op - ops), tag(1),
161 nullptr);
162 GPR_ASSERT(GRPC_CALL_OK == error);
163
164 GPR_ASSERT(GRPC_CALL_OK == grpc_server_request_call(
165 f.server, &s, &call_details,
166 &request_metadata_recv, f.cq, f.cq, tag(101)));
167 CQ_EXPECT_COMPLETION(cqv, tag(101), 1);
168 cq_verify(cqv);
169
170 memset(ops, 0, sizeof(ops));
171 op = ops;
172 op->op = GRPC_OP_SEND_INITIAL_METADATA;
173 op->data.send_initial_metadata.count = 0;
174 op++;
175 op->op = GRPC_OP_SEND_MESSAGE;
176 op->data.send_message.send_message = response_payload;
177 op++;
178 error = grpc_call_start_batch(s, ops, static_cast<size_t>(op - ops), tag(102),
179 nullptr);
180 GPR_ASSERT(GRPC_CALL_OK == error);
181
182 CQ_EXPECT_COMPLETION(cqv, tag(102), 1);
183 CQ_EXPECT_COMPLETION(cqv, tag(1), 1);
184 cq_verify(cqv);
185
186 memset(ops, 0, sizeof(ops));
187 op = ops;
188 op->op = GRPC_OP_RECV_STATUS_ON_CLIENT;
189 op->data.recv_status_on_client.trailing_metadata = &trailing_metadata_recv;
190 op->data.recv_status_on_client.status = &status;
191 op->data.recv_status_on_client.status_details = &details;
192 op++;
193 error = grpc_call_start_batch(c, ops, static_cast<size_t>(op - ops), tag(3),
194 nullptr);
195 GPR_ASSERT(GRPC_CALL_OK == error);
196
197 CQ_EXPECT_COMPLETION(cqv, tag(3), 1);
198 cq_verify(cqv);
199
200 char* details_str = grpc_slice_to_c_string(details);
201 char* method_str = grpc_slice_to_c_string(call_details.method);
202 GPR_ASSERT(status == GRPC_STATUS_UNAVAILABLE);
203 GPR_ASSERT(0 == grpc_slice_str_cmp(details, "keepalive watchdog timeout"));
204 GPR_ASSERT(0 == grpc_slice_str_cmp(call_details.method, "/foo"));
205
206 gpr_free(details_str);
207 gpr_free(method_str);
208
209 grpc_slice_unref(details);
210 grpc_metadata_array_destroy(&initial_metadata_recv);
211 grpc_metadata_array_destroy(&trailing_metadata_recv);
212 grpc_metadata_array_destroy(&request_metadata_recv);
213 grpc_call_details_destroy(&call_details);
214
215 grpc_call_unref(c);
216 grpc_call_unref(s);
217
218 cq_verifier_destroy(cqv);
219
220 grpc_byte_buffer_destroy(response_payload);
221 grpc_byte_buffer_destroy(response_payload_recv);
222
223 end_test(&f);
224 config.tear_down_data(&f);
225 }
226
227 /* Verify that reads reset the keepalive ping timer. The client sends 30 pings
228 * with a sleep of 10ms in between. It has a configured keepalive timer of
229 * 200ms. In the success case, each ping ack should reset the keepalive timer so
230 * that the keepalive ping is never sent. */
test_read_delays_keepalive(grpc_end2end_test_config config)231 static void test_read_delays_keepalive(grpc_end2end_test_config config) {
232 #ifdef GRPC_POSIX_SOCKET
233 grpc_core::UniquePtr<char> poller = GPR_GLOBAL_CONFIG_GET(grpc_poll_strategy);
234 /* It is hard to get the timing right for the polling engine poll. */
235 if ((0 == strcmp(poller.get(), "poll"))) {
236 return;
237 }
238 #endif // GRPC_POSIX_SOCKET
239 const int kPingIntervalMS = 100;
240 grpc_arg keepalive_arg_elems[3];
241 keepalive_arg_elems[0].type = GRPC_ARG_INTEGER;
242 keepalive_arg_elems[0].key = const_cast<char*>(GRPC_ARG_KEEPALIVE_TIME_MS);
243 keepalive_arg_elems[0].value.integer = 20 * kPingIntervalMS;
244 keepalive_arg_elems[1].type = GRPC_ARG_INTEGER;
245 keepalive_arg_elems[1].key = const_cast<char*>(GRPC_ARG_KEEPALIVE_TIMEOUT_MS);
246 keepalive_arg_elems[1].value.integer = 0;
247 keepalive_arg_elems[2].type = GRPC_ARG_INTEGER;
248 keepalive_arg_elems[2].key = const_cast<char*>(GRPC_ARG_HTTP2_BDP_PROBE);
249 keepalive_arg_elems[2].value.integer = 0;
250 grpc_channel_args keepalive_args = {GPR_ARRAY_SIZE(keepalive_arg_elems),
251 keepalive_arg_elems};
252 grpc_end2end_test_fixture f = begin_test(config, "test_read_delays_keepalive",
253 &keepalive_args, nullptr);
254 /* Disable ping ack to trigger the keepalive timeout */
255 grpc_set_disable_ping_ack(true);
256 grpc_call* c;
257 grpc_call* s;
258 cq_verifier* cqv = cq_verifier_create(f.cq);
259 grpc_op ops[6];
260 grpc_op* op;
261 grpc_metadata_array initial_metadata_recv;
262 grpc_metadata_array trailing_metadata_recv;
263 grpc_metadata_array request_metadata_recv;
264 grpc_call_details call_details;
265 grpc_status_code status;
266 grpc_call_error error;
267 grpc_slice details;
268 int was_cancelled = 2;
269 grpc_byte_buffer* request_payload;
270 grpc_byte_buffer* request_payload_recv;
271 grpc_byte_buffer* response_payload;
272 grpc_byte_buffer* response_payload_recv;
273 int i;
274 grpc_slice request_payload_slice =
275 grpc_slice_from_copied_string("hello world");
276 grpc_slice response_payload_slice =
277 grpc_slice_from_copied_string("hello you");
278
279 gpr_timespec deadline = five_seconds_from_now();
280 c = grpc_channel_create_call(f.client, nullptr, GRPC_PROPAGATE_DEFAULTS, f.cq,
281 grpc_slice_from_static_string("/foo"), nullptr,
282 deadline, nullptr);
283 GPR_ASSERT(c);
284
285 grpc_metadata_array_init(&initial_metadata_recv);
286 grpc_metadata_array_init(&trailing_metadata_recv);
287 grpc_metadata_array_init(&request_metadata_recv);
288 grpc_call_details_init(&call_details);
289
290 memset(ops, 0, sizeof(ops));
291 op = ops;
292 op->op = GRPC_OP_SEND_INITIAL_METADATA;
293 op->data.send_initial_metadata.count = 0;
294 op->flags = 0;
295 op->reserved = nullptr;
296 op++;
297 op->op = GRPC_OP_RECV_INITIAL_METADATA;
298 op->data.recv_initial_metadata.recv_initial_metadata = &initial_metadata_recv;
299 op->flags = 0;
300 op->reserved = nullptr;
301 op++;
302 op->op = GRPC_OP_RECV_STATUS_ON_CLIENT;
303 op->data.recv_status_on_client.trailing_metadata = &trailing_metadata_recv;
304 op->data.recv_status_on_client.status = &status;
305 op->data.recv_status_on_client.status_details = &details;
306 op->flags = 0;
307 op->reserved = nullptr;
308 op++;
309 error = grpc_call_start_batch(c, ops, static_cast<size_t>(op - ops), tag(1),
310 nullptr);
311 GPR_ASSERT(GRPC_CALL_OK == error);
312
313 error =
314 grpc_server_request_call(f.server, &s, &call_details,
315 &request_metadata_recv, f.cq, f.cq, tag(100));
316 GPR_ASSERT(GRPC_CALL_OK == error);
317 CQ_EXPECT_COMPLETION(cqv, tag(100), 1);
318 cq_verify(cqv);
319
320 memset(ops, 0, sizeof(ops));
321 op = ops;
322 op->op = GRPC_OP_SEND_INITIAL_METADATA;
323 op->data.send_initial_metadata.count = 0;
324 op->flags = 0;
325 op->reserved = nullptr;
326 op++;
327 op->op = GRPC_OP_RECV_CLOSE_ON_SERVER;
328 op->data.recv_close_on_server.cancelled = &was_cancelled;
329 op->flags = 0;
330 op->reserved = nullptr;
331 op++;
332 error = grpc_call_start_batch(s, ops, static_cast<size_t>(op - ops), tag(101),
333 nullptr);
334 GPR_ASSERT(GRPC_CALL_OK == error);
335
336 for (i = 0; i < 30; i++) {
337 request_payload = grpc_raw_byte_buffer_create(&request_payload_slice, 1);
338 response_payload = grpc_raw_byte_buffer_create(&response_payload_slice, 1);
339
340 memset(ops, 0, sizeof(ops));
341 op = ops;
342 op->op = GRPC_OP_SEND_MESSAGE;
343 op->data.send_message.send_message = request_payload;
344 op->flags = 0;
345 op->reserved = nullptr;
346 op++;
347 op->op = GRPC_OP_RECV_MESSAGE;
348 op->data.recv_message.recv_message = &response_payload_recv;
349 op->flags = 0;
350 op->reserved = nullptr;
351 op++;
352 error = grpc_call_start_batch(c, ops, static_cast<size_t>(op - ops), tag(2),
353 nullptr);
354 GPR_ASSERT(GRPC_CALL_OK == error);
355
356 memset(ops, 0, sizeof(ops));
357 op = ops;
358 op->op = GRPC_OP_RECV_MESSAGE;
359 op->data.recv_message.recv_message = &request_payload_recv;
360 op->flags = 0;
361 op->reserved = nullptr;
362 op++;
363 error = grpc_call_start_batch(s, ops, static_cast<size_t>(op - ops),
364 tag(102), nullptr);
365 GPR_ASSERT(GRPC_CALL_OK == error);
366 CQ_EXPECT_COMPLETION(cqv, tag(102), 1);
367 cq_verify(cqv);
368
369 memset(ops, 0, sizeof(ops));
370 op = ops;
371 op->op = GRPC_OP_SEND_MESSAGE;
372 op->data.send_message.send_message = response_payload;
373 op->flags = 0;
374 op->reserved = nullptr;
375 op++;
376 error = grpc_call_start_batch(s, ops, static_cast<size_t>(op - ops),
377 tag(103), nullptr);
378 GPR_ASSERT(GRPC_CALL_OK == error);
379 CQ_EXPECT_COMPLETION(cqv, tag(103), 1);
380 CQ_EXPECT_COMPLETION(cqv, tag(2), 1);
381 cq_verify(cqv);
382
383 grpc_byte_buffer_destroy(request_payload);
384 grpc_byte_buffer_destroy(response_payload);
385 grpc_byte_buffer_destroy(request_payload_recv);
386 grpc_byte_buffer_destroy(response_payload_recv);
387 /* Sleep for a short interval to check if the client sends any pings */
388 gpr_sleep_until(grpc_timeout_milliseconds_to_deadline(kPingIntervalMS));
389 }
390
391 grpc_slice_unref(request_payload_slice);
392 grpc_slice_unref(response_payload_slice);
393
394 memset(ops, 0, sizeof(ops));
395 op = ops;
396 op->op = GRPC_OP_SEND_CLOSE_FROM_CLIENT;
397 op->flags = 0;
398 op->reserved = nullptr;
399 op++;
400 error = grpc_call_start_batch(c, ops, static_cast<size_t>(op - ops), tag(3),
401 nullptr);
402 GPR_ASSERT(GRPC_CALL_OK == error);
403
404 memset(ops, 0, sizeof(ops));
405 op = ops;
406 op->op = GRPC_OP_SEND_STATUS_FROM_SERVER;
407 op->data.send_status_from_server.trailing_metadata_count = 0;
408 op->data.send_status_from_server.status = GRPC_STATUS_UNIMPLEMENTED;
409 grpc_slice status_details = grpc_slice_from_static_string("xyz");
410 op->data.send_status_from_server.status_details = &status_details;
411 op->flags = 0;
412 op->reserved = nullptr;
413 op++;
414 error = grpc_call_start_batch(s, ops, static_cast<size_t>(op - ops), tag(104),
415 nullptr);
416 GPR_ASSERT(GRPC_CALL_OK == error);
417
418 CQ_EXPECT_COMPLETION(cqv, tag(1), 1);
419 CQ_EXPECT_COMPLETION(cqv, tag(3), 1);
420 CQ_EXPECT_COMPLETION(cqv, tag(101), 1);
421 CQ_EXPECT_COMPLETION(cqv, tag(104), 1);
422 cq_verify(cqv);
423
424 grpc_call_unref(c);
425 grpc_call_unref(s);
426
427 cq_verifier_destroy(cqv);
428
429 grpc_metadata_array_destroy(&initial_metadata_recv);
430 grpc_metadata_array_destroy(&trailing_metadata_recv);
431 grpc_metadata_array_destroy(&request_metadata_recv);
432 grpc_call_details_destroy(&call_details);
433 grpc_slice_unref(details);
434
435 end_test(&f);
436 config.tear_down_data(&f);
437 }
438
keepalive_timeout(grpc_end2end_test_config config)439 void keepalive_timeout(grpc_end2end_test_config config) {
440 test_keepalive_timeout(config);
441 test_read_delays_keepalive(config);
442 }
443
keepalive_timeout_pre_init(void)444 void keepalive_timeout_pre_init(void) {}
445