3 * Copyright 2019 gRPC authors.
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
9 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 * close_fd_test tests the behavior of grpc core when the transport gets
19 * The test creates an http2 transport over a socket pair and closes the
20 * client or server file descriptor to simulate connection breakage while
21 * an RPC call is in progress.
24 #include "src/core/lib/iomgr/port.h"
26 // This test won't work except with posix sockets enabled
27 #ifdef GRPC_POSIX_SOCKET
29 #include "test/core/util/test_config.h"
35 #include <grpc/byte_buffer.h>
36 #include <grpc/byte_buffer_reader.h>
37 #include <grpc/grpc.h>
38 #include <grpc/support/alloc.h>
39 #include <grpc/support/log.h>
40 #include <grpc/support/time.h>
41 #include "src/core/ext/transport/chttp2/transport/chttp2_transport.h"
42 #include "src/core/lib/gpr/env.h"
43 #include "src/core/lib/iomgr/endpoint_pair.h"
44 #include "src/core/lib/surface/channel.h"
45 #include "src/core/lib/surface/completion_queue.h"
46 #include "src/core/lib/surface/server.h"
48 static void* tag(intptr_t t) { return (void*)t; }
50 typedef struct test_ctx test_ctx;
53 /* completion queue for call notifications on the server */
54 grpc_completion_queue* cq;
55 /* completion queue registered to server for shutdown events */
56 grpc_completion_queue* shutdown_cq;
57 /* client's completion queue */
58 grpc_completion_queue* client_cq;
59 /* completion queue bound to call on the server */
60 grpc_completion_queue* bound_cq;
61 /* Server responds to client calls */
63 /* Client calls are sent over the channel */
65 /* encapsulates client, server endpoints */
66 grpc_endpoint_pair* ep;
69 static test_ctx g_ctx;
71 /* chttp2 transport that is immediately available (used for testing
72 connected_channel without a client_channel */
74 static void server_setup_transport(grpc_transport* transport) {
75 grpc_core::ExecCtx exec_ctx;
76 grpc_endpoint_add_to_pollset(g_ctx.ep->server, grpc_cq_pollset(g_ctx.cq));
77 grpc_server_setup_transport(g_ctx.server, transport, nullptr,
78 grpc_server_get_channel_args(g_ctx.server),
82 static void client_setup_transport(grpc_transport* transport) {
83 grpc_core::ExecCtx exec_ctx;
84 grpc_endpoint_add_to_pollset(g_ctx.ep->client,
85 grpc_cq_pollset(g_ctx.client_cq));
86 grpc_arg authority_arg = grpc_channel_arg_string_create(
87 const_cast<char*>(GRPC_ARG_DEFAULT_AUTHORITY),
88 const_cast<char*>("test-authority"));
89 grpc_channel_args* args =
90 grpc_channel_args_copy_and_add(nullptr, &authority_arg, 1);
91 /* TODO (pjaikumar): use GRPC_CLIENT_CHANNEL instead of
92 * GRPC_CLIENT_DIRECT_CHANNEL */
93 g_ctx.client = grpc_channel_create("socketpair-target", args,
94 GRPC_CLIENT_DIRECT_CHANNEL, transport);
95 grpc_channel_args_destroy(args);
98 static void init_client() {
99 grpc_core::ExecCtx exec_ctx;
100 grpc_transport* transport;
101 transport = grpc_create_chttp2_transport(nullptr, g_ctx.ep->client, true);
102 client_setup_transport(transport);
103 GPR_ASSERT(g_ctx.client);
104 grpc_chttp2_transport_start_reading(transport, nullptr, nullptr);
107 static void init_server() {
108 grpc_core::ExecCtx exec_ctx;
109 grpc_transport* transport;
110 GPR_ASSERT(!g_ctx.server);
111 g_ctx.server = grpc_server_create(nullptr, nullptr);
112 grpc_server_register_completion_queue(g_ctx.server, g_ctx.cq, nullptr);
113 grpc_server_start(g_ctx.server);
114 transport = grpc_create_chttp2_transport(nullptr, g_ctx.ep->server, false);
115 server_setup_transport(transport);
116 grpc_chttp2_transport_start_reading(transport, nullptr, nullptr);
119 static void test_init() {
120 grpc_endpoint_pair* sfd =
121 static_cast<grpc_endpoint_pair*>(gpr_malloc(sizeof(grpc_endpoint_pair)));
122 memset(&g_ctx, 0, sizeof(g_ctx));
124 g_ctx.cq = grpc_completion_queue_create_for_next(nullptr);
125 g_ctx.shutdown_cq = grpc_completion_queue_create_for_pluck(nullptr);
126 g_ctx.bound_cq = grpc_completion_queue_create_for_next(nullptr);
127 g_ctx.client_cq = grpc_completion_queue_create_for_next(nullptr);
129 /* Create endpoints */
130 *sfd = grpc_iomgr_create_endpoint_pair("fixture", nullptr);
131 /* Create client, server and setup transport over endpoint pair */
136 static void drain_cq(grpc_completion_queue* cq) {
139 event = grpc_completion_queue_next(cq, grpc_timeout_seconds_to_deadline(1),
141 } while (event.type != GRPC_QUEUE_SHUTDOWN);
144 static void drain_and_destroy_cq(grpc_completion_queue* cq) {
145 grpc_completion_queue_shutdown(cq);
147 grpc_completion_queue_destroy(cq);
150 static void shutdown_server() {
151 if (!g_ctx.server) return;
152 grpc_server_shutdown_and_notify(g_ctx.server, g_ctx.shutdown_cq, tag(1000));
153 GPR_ASSERT(grpc_completion_queue_pluck(g_ctx.shutdown_cq, tag(1000),
154 grpc_timeout_seconds_to_deadline(1),
156 .type == GRPC_OP_COMPLETE);
157 grpc_server_destroy(g_ctx.server);
158 g_ctx.server = nullptr;
161 static void shutdown_client() {
162 if (!g_ctx.client) return;
163 grpc_channel_destroy(g_ctx.client);
164 g_ctx.client = nullptr;
167 static void end_test() {
171 drain_and_destroy_cq(g_ctx.cq);
172 drain_and_destroy_cq(g_ctx.client_cq);
173 drain_and_destroy_cq(g_ctx.bound_cq);
174 grpc_completion_queue_destroy(g_ctx.shutdown_cq);
178 typedef enum fd_type { CLIENT_FD, SERVER_FD } fd_type;
180 static const char* fd_type_str(fd_type fdtype) {
181 if (fdtype == CLIENT_FD) {
183 } else if (fdtype == SERVER_FD) {
186 gpr_log(GPR_ERROR, "Unexpected fd_type %d", fdtype);
191 static void _test_close_before_server_recv(fd_type fdtype) {
192 grpc_core::ExecCtx exec_ctx;
194 grpc_call* server_call;
196 grpc_slice request_payload_slice =
197 grpc_slice_from_copied_string("hello world");
198 grpc_slice response_payload_slice =
199 grpc_slice_from_copied_string("hello you");
200 grpc_byte_buffer* request_payload =
201 grpc_raw_byte_buffer_create(&request_payload_slice, 1);
202 grpc_byte_buffer* response_payload =
203 grpc_raw_byte_buffer_create(&response_payload_slice, 1);
204 gpr_log(GPR_INFO, "Running test: test_close_%s_before_server_recv",
205 fd_type_str(fdtype));
210 grpc_metadata_array initial_metadata_recv;
211 grpc_metadata_array trailing_metadata_recv;
212 grpc_metadata_array request_metadata_recv;
213 grpc_byte_buffer* request_payload_recv = nullptr;
214 grpc_byte_buffer* response_payload_recv = nullptr;
215 grpc_call_details call_details;
216 grpc_status_code status = GRPC_STATUS__DO_NOT_USE;
217 grpc_call_error error;
220 gpr_timespec deadline = grpc_timeout_seconds_to_deadline(1);
221 call = grpc_channel_create_call(
222 g_ctx.client, nullptr, GRPC_PROPAGATE_DEFAULTS, g_ctx.client_cq,
223 grpc_slice_from_static_string("/foo"), nullptr, deadline, nullptr);
226 grpc_metadata_array_init(&initial_metadata_recv);
227 grpc_metadata_array_init(&trailing_metadata_recv);
228 grpc_metadata_array_init(&request_metadata_recv);
229 grpc_call_details_init(&call_details);
231 memset(ops, 0, sizeof(ops));
233 op->op = GRPC_OP_SEND_INITIAL_METADATA;
234 op->data.send_initial_metadata.count = 0;
236 op->reserved = nullptr;
238 op->op = GRPC_OP_SEND_MESSAGE;
239 op->data.send_message.send_message = request_payload;
241 op->reserved = nullptr;
243 op->op = GRPC_OP_SEND_CLOSE_FROM_CLIENT;
245 op->reserved = nullptr;
247 op->op = GRPC_OP_RECV_INITIAL_METADATA;
248 op->data.recv_initial_metadata.recv_initial_metadata = &initial_metadata_recv;
250 op->reserved = nullptr;
252 op->op = GRPC_OP_RECV_MESSAGE;
253 op->data.recv_message.recv_message = &response_payload_recv;
255 op->reserved = nullptr;
257 op->op = GRPC_OP_RECV_STATUS_ON_CLIENT;
258 op->data.recv_status_on_client.trailing_metadata = &trailing_metadata_recv;
259 op->data.recv_status_on_client.status = &status;
260 op->data.recv_status_on_client.status_details = &details;
262 op->reserved = nullptr;
264 error = grpc_call_start_batch(call, ops, static_cast<size_t>(op - ops),
266 GPR_ASSERT(GRPC_CALL_OK == error);
268 error = grpc_server_request_call(g_ctx.server, &server_call, &call_details,
269 &request_metadata_recv, g_ctx.bound_cq,
271 GPR_ASSERT(GRPC_CALL_OK == error);
272 event = grpc_completion_queue_next(
273 g_ctx.cq, grpc_timeout_milliseconds_to_deadline(100), nullptr);
274 GPR_ASSERT(event.success == 1);
275 GPR_ASSERT(event.tag == tag(101));
276 GPR_ASSERT(event.type == GRPC_OP_COMPLETE);
278 memset(ops, 0, sizeof(ops));
280 op->op = GRPC_OP_SEND_INITIAL_METADATA;
281 op->data.send_initial_metadata.count = 0;
283 op->reserved = nullptr;
285 op->op = GRPC_OP_RECV_MESSAGE;
286 op->data.recv_message.recv_message = &request_payload_recv;
288 op->reserved = nullptr;
291 grpc_endpoint_pair* sfd = g_ctx.ep;
293 if (fdtype == SERVER_FD) {
294 fd = sfd->server->vtable->get_fd(sfd->server);
296 GPR_ASSERT(fdtype == CLIENT_FD);
297 fd = sfd->client->vtable->get_fd(sfd->client);
299 /* Connection is closed before the server receives the client's message. */
302 error = grpc_call_start_batch(server_call, ops, static_cast<size_t>(op - ops),
304 GPR_ASSERT(GRPC_CALL_OK == error);
306 event = grpc_completion_queue_next(
307 g_ctx.bound_cq, grpc_timeout_milliseconds_to_deadline(100), nullptr);
309 /* Batch operation completes on the server side.
310 * event.success will be true if the op completes successfully.
311 * event.success will be false if the op completes with an error. This can
312 * happen due to a race with closing the fd resulting in pending writes
313 * failing due to stream closure.
315 GPR_ASSERT(event.type == GRPC_OP_COMPLETE);
316 GPR_ASSERT(event.tag == tag(102));
318 event = grpc_completion_queue_next(
319 g_ctx.client_cq, grpc_timeout_milliseconds_to_deadline(100), nullptr);
320 /* When the client fd is closed, the server gets EPIPE.
321 * When server fd is closed, server gets EBADF.
322 * In both cases server sends GRPC_STATUS_UNAVALABLE to the client. However,
323 * the client may not receive this grpc_status as it's socket is being closed.
324 * If the client didn't get grpc_status from the server it will time out
325 * waiting on the completion queue. So there 2 2 possibilities:
326 * 1. client times out waiting for server's response
327 * 2. client receives GRPC_STATUS_UNAVAILABLE from server
329 if (event.type == GRPC_QUEUE_TIMEOUT) {
330 GPR_ASSERT(event.success == 0);
331 GPR_ASSERT(event.tag == nullptr);
332 /* status is not initialized */
333 GPR_ASSERT(status == GRPC_STATUS__DO_NOT_USE);
335 GPR_ASSERT(event.type == GRPC_OP_COMPLETE);
336 GPR_ASSERT(event.success == 1);
337 GPR_ASSERT(event.tag == tag(1));
338 GPR_ASSERT(status == GRPC_STATUS_UNAVAILABLE);
341 grpc_metadata_array_destroy(&initial_metadata_recv);
342 grpc_metadata_array_destroy(&trailing_metadata_recv);
343 grpc_metadata_array_destroy(&request_metadata_recv);
344 grpc_call_details_destroy(&call_details);
346 grpc_call_unref(call);
347 grpc_call_unref(server_call);
349 grpc_byte_buffer_destroy(request_payload);
350 grpc_byte_buffer_destroy(response_payload);
351 grpc_byte_buffer_destroy(request_payload_recv);
352 grpc_byte_buffer_destroy(response_payload_recv);
357 static void test_close_before_server_recv() {
358 /* Close client side of the connection before server receives message from
360 _test_close_before_server_recv(CLIENT_FD);
361 /* Close server side of the connection before server receives message from
363 _test_close_before_server_recv(SERVER_FD);
366 static void _test_close_before_server_send(fd_type fdtype) {
367 grpc_core::ExecCtx exec_ctx;
369 grpc_call* server_call;
371 grpc_slice request_payload_slice =
372 grpc_slice_from_copied_string("hello world");
373 grpc_slice response_payload_slice =
374 grpc_slice_from_copied_string("hello you");
375 grpc_byte_buffer* request_payload =
376 grpc_raw_byte_buffer_create(&request_payload_slice, 1);
377 grpc_byte_buffer* response_payload =
378 grpc_raw_byte_buffer_create(&response_payload_slice, 1);
379 gpr_log(GPR_INFO, "Running test: test_close_%s_before_server_send",
380 fd_type_str(fdtype));
385 grpc_metadata_array initial_metadata_recv;
386 grpc_metadata_array trailing_metadata_recv;
387 grpc_metadata_array request_metadata_recv;
388 grpc_byte_buffer* request_payload_recv = nullptr;
389 grpc_byte_buffer* response_payload_recv = nullptr;
390 grpc_call_details call_details;
391 grpc_status_code status = GRPC_STATUS__DO_NOT_USE;
392 grpc_call_error error;
394 int was_cancelled = 2;
396 gpr_timespec deadline = grpc_timeout_seconds_to_deadline(1);
397 call = grpc_channel_create_call(
398 g_ctx.client, nullptr, GRPC_PROPAGATE_DEFAULTS, g_ctx.client_cq,
399 grpc_slice_from_static_string("/foo"), nullptr, deadline, nullptr);
402 grpc_metadata_array_init(&initial_metadata_recv);
403 grpc_metadata_array_init(&trailing_metadata_recv);
404 grpc_metadata_array_init(&request_metadata_recv);
405 grpc_call_details_init(&call_details);
407 memset(ops, 0, sizeof(ops));
409 op->op = GRPC_OP_SEND_INITIAL_METADATA;
410 op->data.send_initial_metadata.count = 0;
412 op->reserved = nullptr;
414 op->op = GRPC_OP_SEND_MESSAGE;
415 op->data.send_message.send_message = request_payload;
417 op->reserved = nullptr;
419 op->op = GRPC_OP_SEND_CLOSE_FROM_CLIENT;
421 op->reserved = nullptr;
423 op->op = GRPC_OP_RECV_INITIAL_METADATA;
424 op->data.recv_initial_metadata.recv_initial_metadata = &initial_metadata_recv;
426 op->reserved = nullptr;
428 op->op = GRPC_OP_RECV_MESSAGE;
429 op->data.recv_message.recv_message = &response_payload_recv;
431 op->reserved = nullptr;
433 op->op = GRPC_OP_RECV_STATUS_ON_CLIENT;
434 op->data.recv_status_on_client.trailing_metadata = &trailing_metadata_recv;
435 op->data.recv_status_on_client.status = &status;
436 op->data.recv_status_on_client.status_details = &details;
438 op->reserved = nullptr;
440 error = grpc_call_start_batch(call, ops, static_cast<size_t>(op - ops),
442 GPR_ASSERT(GRPC_CALL_OK == error);
444 error = grpc_server_request_call(g_ctx.server, &server_call, &call_details,
445 &request_metadata_recv, g_ctx.bound_cq,
447 GPR_ASSERT(GRPC_CALL_OK == error);
448 event = grpc_completion_queue_next(
449 g_ctx.cq, grpc_timeout_milliseconds_to_deadline(100), nullptr);
450 GPR_ASSERT(event.success == 1);
451 GPR_ASSERT(event.tag == tag(101));
452 GPR_ASSERT(event.type == GRPC_OP_COMPLETE);
454 memset(ops, 0, sizeof(ops));
456 op->op = GRPC_OP_SEND_INITIAL_METADATA;
457 op->data.send_initial_metadata.count = 0;
459 op->reserved = nullptr;
461 op->op = GRPC_OP_RECV_MESSAGE;
462 op->data.recv_message.recv_message = &request_payload_recv;
464 op->reserved = nullptr;
466 error = grpc_call_start_batch(server_call, ops, static_cast<size_t>(op - ops),
468 GPR_ASSERT(GRPC_CALL_OK == error);
470 event = grpc_completion_queue_next(
471 g_ctx.bound_cq, grpc_timeout_milliseconds_to_deadline(100), nullptr);
472 GPR_ASSERT(event.type == GRPC_OP_COMPLETE);
473 GPR_ASSERT(event.success == 1);
474 GPR_ASSERT(event.tag == tag(102));
476 memset(ops, 0, sizeof(ops));
478 op->op = GRPC_OP_RECV_CLOSE_ON_SERVER;
479 op->data.recv_close_on_server.cancelled = &was_cancelled;
481 op->reserved = nullptr;
483 op->op = GRPC_OP_SEND_MESSAGE;
484 op->data.send_message.send_message = response_payload;
486 op->reserved = nullptr;
488 op->op = GRPC_OP_SEND_STATUS_FROM_SERVER;
489 op->data.send_status_from_server.trailing_metadata_count = 0;
490 op->data.send_status_from_server.status = GRPC_STATUS_OK;
491 grpc_slice status_details = grpc_slice_from_static_string("xyz");
492 op->data.send_status_from_server.status_details = &status_details;
494 op->reserved = nullptr;
497 grpc_endpoint_pair* sfd = g_ctx.ep;
499 if (fdtype == SERVER_FD) {
500 fd = sfd->server->vtable->get_fd(sfd->server);
502 GPR_ASSERT(fdtype == CLIENT_FD);
503 fd = sfd->client->vtable->get_fd(sfd->client);
506 /* Connection is closed before the server sends message and status to the
509 error = grpc_call_start_batch(server_call, ops, static_cast<size_t>(op - ops),
511 GPR_ASSERT(GRPC_CALL_OK == error);
513 /* Batch operation succeeds on the server side */
514 event = grpc_completion_queue_next(
515 g_ctx.bound_cq, grpc_timeout_milliseconds_to_deadline(100), nullptr);
516 GPR_ASSERT(event.type == GRPC_OP_COMPLETE);
517 GPR_ASSERT(event.success == 1);
518 GPR_ASSERT(event.tag == tag(103));
520 event = grpc_completion_queue_next(
521 g_ctx.client_cq, grpc_timeout_milliseconds_to_deadline(100), nullptr);
522 /* In both cases server sends GRPC_STATUS_UNAVALABLE to the client. However,
523 * the client may not receive this grpc_status as it's socket is being closed.
524 * If the client didn't get grpc_status from the server it will time out
525 * waiting on the completion queue
527 if (event.type == GRPC_OP_COMPLETE) {
528 GPR_ASSERT(event.success == 1);
529 GPR_ASSERT(event.tag == tag(1));
530 GPR_ASSERT(status == GRPC_STATUS_UNAVAILABLE);
532 GPR_ASSERT(event.type == GRPC_QUEUE_TIMEOUT);
533 GPR_ASSERT(event.success == 0);
534 GPR_ASSERT(event.tag == nullptr);
535 /* status is not initialized */
536 GPR_ASSERT(status == GRPC_STATUS__DO_NOT_USE);
538 GPR_ASSERT(was_cancelled == 0);
540 grpc_metadata_array_destroy(&initial_metadata_recv);
541 grpc_metadata_array_destroy(&trailing_metadata_recv);
542 grpc_metadata_array_destroy(&request_metadata_recv);
543 grpc_call_details_destroy(&call_details);
545 grpc_call_unref(call);
546 grpc_call_unref(server_call);
548 grpc_byte_buffer_destroy(request_payload);
549 grpc_byte_buffer_destroy(response_payload);
550 grpc_byte_buffer_destroy(request_payload_recv);
551 grpc_byte_buffer_destroy(response_payload_recv);
556 static void test_close_before_server_send() {
557 /* Close client side of the connection before server sends message to client
559 _test_close_before_server_send(CLIENT_FD);
560 /* Close server side of the connection before server sends message to client
562 _test_close_before_server_send(SERVER_FD);
565 static void _test_close_before_client_send(fd_type fdtype) {
566 grpc_core::ExecCtx exec_ctx;
569 grpc_slice request_payload_slice =
570 grpc_slice_from_copied_string("hello world");
571 grpc_slice response_payload_slice =
572 grpc_slice_from_copied_string("hello you");
573 grpc_byte_buffer* request_payload =
574 grpc_raw_byte_buffer_create(&request_payload_slice, 1);
575 grpc_byte_buffer* response_payload =
576 grpc_raw_byte_buffer_create(&response_payload_slice, 1);
577 gpr_log(GPR_INFO, "Running test: test_close_%s_before_client_send",
578 fd_type_str(fdtype));
583 grpc_metadata_array initial_metadata_recv;
584 grpc_metadata_array trailing_metadata_recv;
585 grpc_metadata_array request_metadata_recv;
586 grpc_byte_buffer* request_payload_recv = nullptr;
587 grpc_byte_buffer* response_payload_recv = nullptr;
588 grpc_call_details call_details;
589 grpc_status_code status;
590 grpc_call_error error;
593 gpr_timespec deadline = grpc_timeout_seconds_to_deadline(1);
594 call = grpc_channel_create_call(
595 g_ctx.client, nullptr, GRPC_PROPAGATE_DEFAULTS, g_ctx.client_cq,
596 grpc_slice_from_static_string("/foo"), nullptr, deadline, nullptr);
599 grpc_metadata_array_init(&initial_metadata_recv);
600 grpc_metadata_array_init(&trailing_metadata_recv);
601 grpc_metadata_array_init(&request_metadata_recv);
602 grpc_call_details_init(&call_details);
604 memset(ops, 0, sizeof(ops));
606 op->op = GRPC_OP_SEND_INITIAL_METADATA;
607 op->data.send_initial_metadata.count = 0;
609 op->reserved = nullptr;
611 op->op = GRPC_OP_SEND_MESSAGE;
612 op->data.send_message.send_message = request_payload;
614 op->reserved = nullptr;
616 op->op = GRPC_OP_SEND_CLOSE_FROM_CLIENT;
618 op->reserved = nullptr;
620 op->op = GRPC_OP_RECV_INITIAL_METADATA;
621 op->data.recv_initial_metadata.recv_initial_metadata = &initial_metadata_recv;
623 op->reserved = nullptr;
625 op->op = GRPC_OP_RECV_MESSAGE;
626 op->data.recv_message.recv_message = &response_payload_recv;
628 op->reserved = nullptr;
630 op->op = GRPC_OP_RECV_STATUS_ON_CLIENT;
631 op->data.recv_status_on_client.trailing_metadata = &trailing_metadata_recv;
632 op->data.recv_status_on_client.status = &status;
633 op->data.recv_status_on_client.status_details = &details;
635 op->reserved = nullptr;
638 grpc_endpoint_pair* sfd = g_ctx.ep;
640 if (fdtype == SERVER_FD) {
641 fd = sfd->server->vtable->get_fd(sfd->server);
643 GPR_ASSERT(fdtype == CLIENT_FD);
644 fd = sfd->client->vtable->get_fd(sfd->client);
646 /* Connection is closed before the client sends a batch to the server */
649 error = grpc_call_start_batch(call, ops, static_cast<size_t>(op - ops),
651 GPR_ASSERT(GRPC_CALL_OK == error);
653 /* Status unavailable is returned to the client when client or server fd is
655 event = grpc_completion_queue_next(
656 g_ctx.client_cq, grpc_timeout_milliseconds_to_deadline(100), nullptr);
657 GPR_ASSERT(event.success == 1);
658 GPR_ASSERT(event.type == GRPC_OP_COMPLETE);
659 GPR_ASSERT(event.tag == tag(1));
660 GPR_ASSERT(status == GRPC_STATUS_UNAVAILABLE);
662 /* No event is received on the server */
663 event = grpc_completion_queue_next(
664 g_ctx.cq, grpc_timeout_milliseconds_to_deadline(100), nullptr);
665 GPR_ASSERT(event.success == 0);
666 GPR_ASSERT(event.type == GRPC_QUEUE_TIMEOUT);
667 GPR_ASSERT(event.tag == nullptr);
669 grpc_slice_unref(details);
670 grpc_metadata_array_destroy(&initial_metadata_recv);
671 grpc_metadata_array_destroy(&trailing_metadata_recv);
672 grpc_metadata_array_destroy(&request_metadata_recv);
673 grpc_call_details_destroy(&call_details);
675 grpc_call_unref(call);
677 grpc_byte_buffer_destroy(request_payload);
678 grpc_byte_buffer_destroy(response_payload);
679 grpc_byte_buffer_destroy(request_payload_recv);
680 grpc_byte_buffer_destroy(response_payload_recv);
684 static void test_close_before_client_send() {
685 /* Close client side of the connection before client sends message to server
687 _test_close_before_client_send(CLIENT_FD);
688 /* Close server side of the connection before client sends message to server
690 _test_close_before_client_send(SERVER_FD);
693 static void _test_close_before_call_create(fd_type fdtype) {
694 grpc_core::ExecCtx exec_ctx;
699 gpr_timespec deadline = grpc_timeout_milliseconds_to_deadline(100);
701 grpc_endpoint_pair* sfd = g_ctx.ep;
703 if (fdtype == SERVER_FD) {
704 fd = sfd->server->vtable->get_fd(sfd->server);
706 GPR_ASSERT(fdtype == CLIENT_FD);
707 fd = sfd->client->vtable->get_fd(sfd->client);
709 /* Connection is closed before the client creates a call */
712 call = grpc_channel_create_call(
713 g_ctx.client, nullptr, GRPC_PROPAGATE_DEFAULTS, g_ctx.client_cq,
714 grpc_slice_from_static_string("/foo"), nullptr, deadline, nullptr);
717 /* Client and server time out waiting on their completion queues and nothing
718 * is sent or received */
719 event = grpc_completion_queue_next(
720 g_ctx.client_cq, grpc_timeout_milliseconds_to_deadline(100), nullptr);
721 GPR_ASSERT(event.type == GRPC_QUEUE_TIMEOUT);
722 GPR_ASSERT(event.success == 0);
723 GPR_ASSERT(event.tag == nullptr);
725 event = grpc_completion_queue_next(
726 g_ctx.cq, grpc_timeout_milliseconds_to_deadline(100), nullptr);
727 GPR_ASSERT(event.type == GRPC_QUEUE_TIMEOUT);
728 GPR_ASSERT(event.success == 0);
729 GPR_ASSERT(event.tag == nullptr);
731 grpc_call_unref(call);
735 static void test_close_before_call_create() {
736 /* Close client side of the connection before client creates a call */
737 _test_close_before_call_create(CLIENT_FD);
738 /* Close server side of the connection before client creates a call */
739 _test_close_before_call_create(SERVER_FD);
742 int main(int argc, char** argv) {
743 grpc::testing::TestEnvironment env(argc, argv);
748 for (int i = 0; i < iterations; ++i) {
749 test_close_before_call_create();
750 test_close_before_client_send();
751 test_close_before_server_recv();
752 test_close_before_server_send();
760 #else /* GRPC_POSIX_SOCKET */
762 int main(int argc, char** argv) { return 1; }
764 #endif /* GRPC_POSIX_SOCKET */