diff --git a/CMakeLists.txt b/CMakeLists.txt index 11db1bd187a..113c9d4024c 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -1171,6 +1171,7 @@ add_library(end2end_nosec_tests test/core/end2end/tests/retry_recv_initial_metadata.cc test/core/end2end/tests/retry_recv_message.cc test/core/end2end/tests/retry_recv_trailing_metadata_error.cc + test/core/end2end/tests/retry_send_initial_metadata_refs.cc test/core/end2end/tests/retry_send_op_fails.cc test/core/end2end/tests/retry_server_pushback_delay.cc test/core/end2end/tests/retry_server_pushback_disabled.cc @@ -1317,6 +1318,7 @@ add_library(end2end_tests test/core/end2end/tests/retry_recv_initial_metadata.cc test/core/end2end/tests/retry_recv_message.cc test/core/end2end/tests/retry_recv_trailing_metadata_error.cc + test/core/end2end/tests/retry_send_initial_metadata_refs.cc test/core/end2end/tests/retry_send_op_fails.cc test/core/end2end/tests/retry_server_pushback_delay.cc test/core/end2end/tests/retry_server_pushback_disabled.cc diff --git a/build_autogenerated.yaml b/build_autogenerated.yaml index a5ebe850665..871c7ae4f2b 100644 --- a/build_autogenerated.yaml +++ b/build_autogenerated.yaml @@ -100,6 +100,7 @@ libs: - test/core/end2end/tests/retry_recv_initial_metadata.cc - test/core/end2end/tests/retry_recv_message.cc - test/core/end2end/tests/retry_recv_trailing_metadata_error.cc + - test/core/end2end/tests/retry_send_initial_metadata_refs.cc - test/core/end2end/tests/retry_send_op_fails.cc - test/core/end2end/tests/retry_server_pushback_delay.cc - test/core/end2end/tests/retry_server_pushback_disabled.cc @@ -226,6 +227,7 @@ libs: - test/core/end2end/tests/retry_recv_initial_metadata.cc - test/core/end2end/tests/retry_recv_message.cc - test/core/end2end/tests/retry_recv_trailing_metadata_error.cc + - test/core/end2end/tests/retry_send_initial_metadata_refs.cc - test/core/end2end/tests/retry_send_op_fails.cc - test/core/end2end/tests/retry_server_pushback_delay.cc - test/core/end2end/tests/retry_server_pushback_disabled.cc diff --git a/gRPC-Core.podspec b/gRPC-Core.podspec index f96fc7be300..f4c53cae861 100644 --- a/gRPC-Core.podspec +++ b/gRPC-Core.podspec @@ -2180,6 +2180,7 @@ Pod::Spec.new do |s| 'test/core/end2end/tests/retry_recv_initial_metadata.cc', 'test/core/end2end/tests/retry_recv_message.cc', 'test/core/end2end/tests/retry_recv_trailing_metadata_error.cc', + 'test/core/end2end/tests/retry_send_initial_metadata_refs.cc', 'test/core/end2end/tests/retry_send_op_fails.cc', 'test/core/end2end/tests/retry_server_pushback_delay.cc', 'test/core/end2end/tests/retry_server_pushback_disabled.cc', diff --git a/grpc.gyp b/grpc.gyp index d233f342476..55d1e87d993 100644 --- a/grpc.gyp +++ b/grpc.gyp @@ -254,6 +254,7 @@ 'test/core/end2end/tests/retry_recv_initial_metadata.cc', 'test/core/end2end/tests/retry_recv_message.cc', 'test/core/end2end/tests/retry_recv_trailing_metadata_error.cc', + 'test/core/end2end/tests/retry_send_initial_metadata_refs.cc', 'test/core/end2end/tests/retry_send_op_fails.cc', 'test/core/end2end/tests/retry_server_pushback_delay.cc', 'test/core/end2end/tests/retry_server_pushback_disabled.cc', @@ -368,6 +369,7 @@ 'test/core/end2end/tests/retry_recv_initial_metadata.cc', 'test/core/end2end/tests/retry_recv_message.cc', 'test/core/end2end/tests/retry_recv_trailing_metadata_error.cc', + 'test/core/end2end/tests/retry_send_initial_metadata_refs.cc', 'test/core/end2end/tests/retry_send_op_fails.cc', 'test/core/end2end/tests/retry_server_pushback_delay.cc', 'test/core/end2end/tests/retry_server_pushback_disabled.cc', diff --git a/src/core/lib/slice/slice.cc b/src/core/lib/slice/slice.cc index 5f7e9ea0c86..7f39df166b1 100644 --- a/src/core/lib/slice/slice.cc +++ b/src/core/lib/slice/slice.cc @@ -223,11 +223,21 @@ grpc_core::UnmanagedMemorySlice::UnmanagedMemorySlice(const char* source) strlen(source)) {} grpc_slice grpc_slice_from_copied_buffer(const char* source, size_t length) { - return grpc_core::UnmanagedMemorySlice(source, length); + grpc_slice slice; + if (length <= sizeof(slice.data.inlined.bytes)) { + slice.refcount = nullptr; + slice.data.inlined.length = length; + } else { + // Create a ref-counted slice. + slice = grpc_core::UnmanagedMemorySlice( + length, grpc_core::UnmanagedMemorySlice::ForceHeapAllocation()); + } + memcpy(GRPC_SLICE_START_PTR(slice), source, length); + return slice; } grpc_slice grpc_slice_from_copied_string(const char* source) { - return grpc_core::UnmanagedMemorySlice(source, strlen(source)); + return grpc_slice_from_copied_buffer(source, strlen(source)); } grpc_slice grpc_slice_from_moved_buffer(grpc_core::UniquePtr p, diff --git a/src/core/lib/transport/metadata_batch.cc b/src/core/lib/transport/metadata_batch.cc index e85b476ca42..8207fb5ee56 100644 --- a/src/core/lib/transport/metadata_batch.cc +++ b/src/core/lib/transport/metadata_batch.cc @@ -401,9 +401,20 @@ void grpc_metadata_batch_copy(grpc_metadata_batch* src, size_t i = 0; for (grpc_linked_mdelem* elem = src->list.head; elem != nullptr; elem = elem->next) { + // If the mdelem is not external, take a ref. + // Otherwise, create a new copy, holding its own refs to the + // underlying slices. + grpc_mdelem md; + if (GRPC_MDELEM_STORAGE(elem->md) != GRPC_MDELEM_STORAGE_EXTERNAL) { + md = GRPC_MDELEM_REF(elem->md); + } else { + md = grpc_mdelem_from_slices( + grpc_slice_ref_internal(GRPC_MDKEY(elem->md)), + grpc_slice_ref_internal(GRPC_MDVALUE(elem->md))); + } // Error unused in non-debug builds. - grpc_error_handle GRPC_UNUSED error = grpc_metadata_batch_add_tail( - dst, &storage[i++], GRPC_MDELEM_REF(elem->md)); + grpc_error_handle GRPC_UNUSED error = + grpc_metadata_batch_add_tail(dst, &storage[i++], md); // The only way that grpc_metadata_batch_add_tail() can fail is if // there's a duplicate entry for a callout. However, that can't be // the case here, because we would not have been allowed to create diff --git a/src/core/lib/transport/metadata_batch.h b/src/core/lib/transport/metadata_batch.h index b72859fcf26..986d030c866 100644 --- a/src/core/lib/transport/metadata_batch.h +++ b/src/core/lib/transport/metadata_batch.h @@ -196,6 +196,13 @@ void grpc_metadata_batch_assert_ok(grpc_metadata_batch* batch); /// Copies \a src to \a dst. \a storage must point to an array of /// \a grpc_linked_mdelem structs of at least the same size as \a src. +/// +/// For each mdelem in \a src, if the mdelem is of storage types +/// GRPC_MDELEM_STORAGE_INTERNED or GRPC_MDELEM_STORAGE_ALLOCATED, +/// refs the original mdelem for the copy. Otherwise, makes a new +/// mdelem that will hold its own refs to the key and value slices. +/// +/// Currently used only in the retry code. void grpc_metadata_batch_copy(grpc_metadata_batch* src, grpc_metadata_batch* dst, grpc_linked_mdelem* storage); diff --git a/test/core/end2end/end2end_nosec_tests.cc b/test/core/end2end/end2end_nosec_tests.cc index b0c23bc0460..68c9c3356f6 100644 --- a/test/core/end2end/end2end_nosec_tests.cc +++ b/test/core/end2end/end2end_nosec_tests.cc @@ -157,6 +157,8 @@ extern void retry_recv_message(grpc_end2end_test_config config); extern void retry_recv_message_pre_init(void); extern void retry_recv_trailing_metadata_error(grpc_end2end_test_config config); extern void retry_recv_trailing_metadata_error_pre_init(void); +extern void retry_send_initial_metadata_refs(grpc_end2end_test_config config); +extern void retry_send_initial_metadata_refs_pre_init(void); extern void retry_send_op_fails(grpc_end2end_test_config config); extern void retry_send_op_fails_pre_init(void); extern void retry_server_pushback_delay(grpc_end2end_test_config config); @@ -273,6 +275,7 @@ void grpc_end2end_tests_pre_init(void) { retry_recv_initial_metadata_pre_init(); retry_recv_message_pre_init(); retry_recv_trailing_metadata_error_pre_init(); + retry_send_initial_metadata_refs_pre_init(); retry_send_op_fails_pre_init(); retry_server_pushback_delay_pre_init(); retry_server_pushback_disabled_pre_init(); @@ -371,6 +374,7 @@ void grpc_end2end_tests(int argc, char **argv, retry_recv_initial_metadata(config); retry_recv_message(config); retry_recv_trailing_metadata_error(config); + retry_send_initial_metadata_refs(config); retry_send_op_fails(config); retry_server_pushback_delay(config); retry_server_pushback_disabled(config); @@ -655,6 +659,10 @@ void grpc_end2end_tests(int argc, char **argv, retry_recv_trailing_metadata_error(config); continue; } + if (0 == strcmp("retry_send_initial_metadata_refs", argv[i])) { + retry_send_initial_metadata_refs(config); + continue; + } if (0 == strcmp("retry_send_op_fails", argv[i])) { retry_send_op_fails(config); continue; diff --git a/test/core/end2end/end2end_tests.cc b/test/core/end2end/end2end_tests.cc index da66982cf7f..39089368bdd 100644 --- a/test/core/end2end/end2end_tests.cc +++ b/test/core/end2end/end2end_tests.cc @@ -159,6 +159,8 @@ extern void retry_recv_message(grpc_end2end_test_config config); extern void retry_recv_message_pre_init(void); extern void retry_recv_trailing_metadata_error(grpc_end2end_test_config config); extern void retry_recv_trailing_metadata_error_pre_init(void); +extern void retry_send_initial_metadata_refs(grpc_end2end_test_config config); +extern void retry_send_initial_metadata_refs_pre_init(void); extern void retry_send_op_fails(grpc_end2end_test_config config); extern void retry_send_op_fails_pre_init(void); extern void retry_server_pushback_delay(grpc_end2end_test_config config); @@ -278,6 +280,7 @@ void grpc_end2end_tests_pre_init(void) { retry_recv_initial_metadata_pre_init(); retry_recv_message_pre_init(); retry_recv_trailing_metadata_error_pre_init(); + retry_send_initial_metadata_refs_pre_init(); retry_send_op_fails_pre_init(); retry_server_pushback_delay_pre_init(); retry_server_pushback_disabled_pre_init(); @@ -378,6 +381,7 @@ void grpc_end2end_tests(int argc, char **argv, retry_recv_initial_metadata(config); retry_recv_message(config); retry_recv_trailing_metadata_error(config); + retry_send_initial_metadata_refs(config); retry_send_op_fails(config); retry_server_pushback_delay(config); retry_server_pushback_disabled(config); @@ -667,6 +671,10 @@ void grpc_end2end_tests(int argc, char **argv, retry_recv_trailing_metadata_error(config); continue; } + if (0 == strcmp("retry_send_initial_metadata_refs", argv[i])) { + retry_send_initial_metadata_refs(config); + continue; + } if (0 == strcmp("retry_send_op_fails", argv[i])) { retry_send_op_fails(config); continue; diff --git a/test/core/end2end/generate_tests.bzl b/test/core/end2end/generate_tests.bzl index 77570b9c0eb..9886135821c 100755 --- a/test/core/end2end/generate_tests.bzl +++ b/test/core/end2end/generate_tests.bzl @@ -320,6 +320,9 @@ END2END_TESTS = { "retry_recv_trailing_metadata_error": _test_options( needs_client_channel = True, ), + "retry_send_initial_metadata_refs": _test_options( + needs_client_channel = True, + ), "retry_send_op_fails": _test_options(needs_client_channel = True), "retry_server_pushback_delay": _test_options(needs_client_channel = True), "retry_server_pushback_disabled": _test_options(needs_client_channel = True), diff --git a/test/core/end2end/tests/retry_send_initial_metadata_refs.cc b/test/core/end2end/tests/retry_send_initial_metadata_refs.cc new file mode 100644 index 00000000000..08a3691a07a --- /dev/null +++ b/test/core/end2end/tests/retry_send_initial_metadata_refs.cc @@ -0,0 +1,359 @@ +/* + * + * Copyright 2017 gRPC authors. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ + +#include "test/core/end2end/end2end_tests.h" + +#include +#include + +#include +#include +#include +#include +#include +#include + +#include "src/core/lib/channel/channel_args.h" +#include "src/core/lib/gpr/string.h" +#include "src/core/lib/gpr/useful.h" +#include "src/core/lib/iomgr/exec_ctx.h" +#include "src/core/lib/transport/static_metadata.h" + +#include "test/core/end2end/cq_verifier.h" +#include "test/core/end2end/tests/cancel_test_helpers.h" + +static void* tag(intptr_t t) { return reinterpret_cast(t); } + +static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config, + const char* test_name, + grpc_channel_args* client_args, + grpc_channel_args* server_args) { + grpc_end2end_test_fixture f; + gpr_log(GPR_INFO, "Running test: %s/%s", test_name, config.name); + f = config.create_fixture(client_args, server_args); + config.init_server(&f, server_args); + config.init_client(&f, client_args); + return f; +} + +static gpr_timespec n_seconds_from_now(int n) { + return grpc_timeout_seconds_to_deadline(n); +} + +static gpr_timespec five_seconds_from_now(void) { + return n_seconds_from_now(5); +} + +static void drain_cq(grpc_completion_queue* cq) { + grpc_event ev; + do { + ev = grpc_completion_queue_next(cq, five_seconds_from_now(), nullptr); + } while (ev.type != GRPC_QUEUE_SHUTDOWN); +} + +static void shutdown_server(grpc_end2end_test_fixture* f) { + if (!f->server) return; + grpc_server_shutdown_and_notify(f->server, f->shutdown_cq, tag(1000)); + GPR_ASSERT(grpc_completion_queue_pluck(f->shutdown_cq, tag(1000), + grpc_timeout_seconds_to_deadline(5), + nullptr) + .type == GRPC_OP_COMPLETE); + grpc_server_destroy(f->server); + f->server = nullptr; +} + +static void shutdown_client(grpc_end2end_test_fixture* f) { + if (!f->client) return; + grpc_channel_destroy(f->client); + f->client = nullptr; +} + +static void end_test(grpc_end2end_test_fixture* f) { + shutdown_server(f); + shutdown_client(f); + + grpc_completion_queue_shutdown(f->cq); + drain_cq(f->cq); + grpc_completion_queue_destroy(f->cq); + grpc_completion_queue_destroy(f->shutdown_cq); +} + +// Tests that we hold refs to send_initial_metadata payload while +// cached, even after the caller has released its refs: +// - 2 retries allowed for ABORTED status +// - first attempt returns ABORTED +// - second attempt returns OK +static void test_retry_send_initial_metadata_refs( + grpc_end2end_test_config config) { + grpc_call* c; + grpc_call* s; + grpc_op ops[6]; + grpc_op* op; + grpc_metadata_array client_send_initial_metadata; + grpc_metadata_array initial_metadata_recv; + grpc_metadata_array trailing_metadata_recv; + grpc_metadata_array request_metadata_recv; + grpc_call_details call_details; + grpc_slice request_payload_slice = grpc_slice_from_static_string("foo"); + grpc_slice response_payload_slice = grpc_slice_from_static_string("bar"); + grpc_byte_buffer* request_payload = + grpc_raw_byte_buffer_create(&request_payload_slice, 1); + grpc_byte_buffer* response_payload = + grpc_raw_byte_buffer_create(&response_payload_slice, 1); + grpc_byte_buffer* request_payload_recv = nullptr; + grpc_byte_buffer* response_payload_recv = nullptr; + grpc_status_code status; + grpc_call_error error; + grpc_slice details; + int was_cancelled = 2; + char* peer; + + grpc_arg args[] = { + grpc_channel_arg_string_create( + const_cast(GRPC_ARG_SERVICE_CONFIG), + const_cast( + "{\n" + " \"methodConfig\": [ {\n" + " \"name\": [\n" + " { \"service\": \"service\", \"method\": \"method\" }\n" + " ],\n" + " \"retryPolicy\": {\n" + " \"maxAttempts\": 3,\n" + " \"initialBackoff\": \"1s\",\n" + " \"maxBackoff\": \"120s\",\n" + " \"backoffMultiplier\": 1.6,\n" + " \"retryableStatusCodes\": [ \"ABORTED\" ]\n" + " }\n" + " } ]\n" + "}")), + }; + grpc_channel_args client_args = {GPR_ARRAY_SIZE(args), args}; + grpc_end2end_test_fixture f = begin_test( + config, "retry_send_initial_metadata_refs", &client_args, nullptr); + + cq_verifier* cqv = cq_verifier_create(f.cq); + + gpr_timespec deadline = five_seconds_from_now(); + c = grpc_channel_create_call(f.client, nullptr, GRPC_PROPAGATE_DEFAULTS, f.cq, + grpc_slice_from_static_string("/service/method"), + nullptr, deadline, nullptr); + GPR_ASSERT(c); + + peer = grpc_call_get_peer(c); + GPR_ASSERT(peer != nullptr); + gpr_log(GPR_DEBUG, "client_peer_before_call=%s", peer); + gpr_free(peer); + + grpc_metadata_array_init(&client_send_initial_metadata); + client_send_initial_metadata.count = 2; + client_send_initial_metadata.metadata = static_cast( + gpr_malloc(client_send_initial_metadata.count * sizeof(grpc_metadata))); + // First element is short enough for slices to be inlined. + client_send_initial_metadata.metadata[0].key = + grpc_slice_from_copied_string(std::string("foo").c_str()); + client_send_initial_metadata.metadata[0].value = + grpc_slice_from_copied_string(std::string("bar").c_str()); + // Second element requires slice allocation. + client_send_initial_metadata.metadata[1].key = grpc_slice_from_copied_string( + std::string(GRPC_SLICE_INLINED_SIZE + 1, 'x').c_str()); + client_send_initial_metadata.metadata[1].value = + grpc_slice_from_copied_string( + std::string(GRPC_SLICE_INLINED_SIZE + 1, 'y').c_str()); + + grpc_metadata_array_init(&initial_metadata_recv); + grpc_metadata_array_init(&trailing_metadata_recv); + grpc_metadata_array_init(&request_metadata_recv); + grpc_call_details_init(&call_details); + grpc_slice status_details = grpc_slice_from_static_string("xyz"); + + memset(ops, 0, sizeof(ops)); + op = ops; + op->op = GRPC_OP_SEND_INITIAL_METADATA; + op->data.send_initial_metadata.count = client_send_initial_metadata.count; + op->data.send_initial_metadata.metadata = + client_send_initial_metadata.metadata; + op++; + op->op = GRPC_OP_SEND_MESSAGE; + op->data.send_message.send_message = request_payload; + op++; + op->op = GRPC_OP_SEND_CLOSE_FROM_CLIENT; + op++; + error = grpc_call_start_batch(c, ops, static_cast(op - ops), tag(1), + nullptr); + GPR_ASSERT(GRPC_CALL_OK == error); + CQ_EXPECT_COMPLETION(cqv, tag(1), true); + cq_verify(cqv); + + for (size_t i = 0; i < client_send_initial_metadata.count; ++i) { + grpc_slice_unref(client_send_initial_metadata.metadata[i].key); + grpc_slice_unref(client_send_initial_metadata.metadata[i].value); + } + grpc_metadata_array_destroy(&client_send_initial_metadata); + + memset(ops, 0, sizeof(ops)); + op = ops; + op->op = GRPC_OP_RECV_MESSAGE; + op->data.recv_message.recv_message = &response_payload_recv; + op++; + op->op = GRPC_OP_RECV_INITIAL_METADATA; + op->data.recv_initial_metadata.recv_initial_metadata = &initial_metadata_recv; + op++; + op->op = GRPC_OP_RECV_STATUS_ON_CLIENT; + op->data.recv_status_on_client.trailing_metadata = &trailing_metadata_recv; + op->data.recv_status_on_client.status = &status; + op->data.recv_status_on_client.status_details = &details; + op++; + error = grpc_call_start_batch(c, ops, static_cast(op - ops), tag(2), + nullptr); + GPR_ASSERT(GRPC_CALL_OK == error); + + error = + grpc_server_request_call(f.server, &s, &call_details, + &request_metadata_recv, f.cq, f.cq, tag(101)); + GPR_ASSERT(GRPC_CALL_OK == error); + CQ_EXPECT_COMPLETION(cqv, tag(101), true); + cq_verify(cqv); + + // Make sure the "grpc-previous-rpc-attempts" header was not sent in the + // initial attempt. + for (size_t i = 0; i < request_metadata_recv.count; ++i) { + GPR_ASSERT(!grpc_slice_eq(request_metadata_recv.metadata[i].key, + GRPC_MDSTR_GRPC_PREVIOUS_RPC_ATTEMPTS)); + } + + peer = grpc_call_get_peer(s); + GPR_ASSERT(peer != nullptr); + gpr_log(GPR_DEBUG, "server_peer=%s", peer); + gpr_free(peer); + peer = grpc_call_get_peer(c); + GPR_ASSERT(peer != nullptr); + gpr_log(GPR_DEBUG, "client_peer=%s", peer); + gpr_free(peer); + + memset(ops, 0, sizeof(ops)); + op = ops; + op->op = GRPC_OP_SEND_INITIAL_METADATA; + op->data.send_initial_metadata.count = 0; + op++; + op->op = GRPC_OP_SEND_STATUS_FROM_SERVER; + op->data.send_status_from_server.trailing_metadata_count = 0; + op->data.send_status_from_server.status = GRPC_STATUS_ABORTED; + op->data.send_status_from_server.status_details = &status_details; + op++; + op->op = GRPC_OP_RECV_CLOSE_ON_SERVER; + op->data.recv_close_on_server.cancelled = &was_cancelled; + op++; + error = grpc_call_start_batch(s, ops, static_cast(op - ops), tag(102), + nullptr); + GPR_ASSERT(GRPC_CALL_OK == error); + + CQ_EXPECT_COMPLETION(cqv, tag(102), true); + cq_verify(cqv); + + grpc_call_unref(s); + grpc_metadata_array_destroy(&request_metadata_recv); + grpc_metadata_array_init(&request_metadata_recv); + grpc_call_details_destroy(&call_details); + grpc_call_details_init(&call_details); + + error = + grpc_server_request_call(f.server, &s, &call_details, + &request_metadata_recv, f.cq, f.cq, tag(201)); + GPR_ASSERT(GRPC_CALL_OK == error); + CQ_EXPECT_COMPLETION(cqv, tag(201), true); + cq_verify(cqv); + + // Make sure the "grpc-previous-rpc-attempts" header was sent in the retry. + GPR_ASSERT(contains_metadata_slices(&request_metadata_recv, + GRPC_MDSTR_GRPC_PREVIOUS_RPC_ATTEMPTS, + GRPC_MDSTR_1)); + // It should also contain the initial metadata, even though the client + // freed it already. + GPR_ASSERT(contains_metadata(&request_metadata_recv, "foo", "bar")); + GPR_ASSERT( + contains_metadata(&request_metadata_recv, + std::string(GRPC_SLICE_INLINED_SIZE + 1, 'x').c_str(), + std::string(GRPC_SLICE_INLINED_SIZE + 1, 'y').c_str())); + + peer = grpc_call_get_peer(s); + GPR_ASSERT(peer != nullptr); + gpr_log(GPR_DEBUG, "server_peer=%s", peer); + gpr_free(peer); + peer = grpc_call_get_peer(c); + GPR_ASSERT(peer != nullptr); + gpr_log(GPR_DEBUG, "client_peer=%s", peer); + gpr_free(peer); + + memset(ops, 0, sizeof(ops)); + op = ops; + op->op = GRPC_OP_SEND_INITIAL_METADATA; + op->data.send_initial_metadata.count = 0; + op++; + op->op = GRPC_OP_RECV_MESSAGE; + op->data.recv_message.recv_message = &request_payload_recv; + op++; + op->op = GRPC_OP_SEND_MESSAGE; + op->data.send_message.send_message = response_payload; + op++; + op->op = GRPC_OP_SEND_STATUS_FROM_SERVER; + op->data.send_status_from_server.trailing_metadata_count = 0; + op->data.send_status_from_server.status = GRPC_STATUS_OK; + op->data.send_status_from_server.status_details = &status_details; + op++; + op->op = GRPC_OP_RECV_CLOSE_ON_SERVER; + op->data.recv_close_on_server.cancelled = &was_cancelled; + op++; + error = grpc_call_start_batch(s, ops, static_cast(op - ops), tag(202), + nullptr); + GPR_ASSERT(GRPC_CALL_OK == error); + + CQ_EXPECT_COMPLETION(cqv, tag(202), true); + CQ_EXPECT_COMPLETION(cqv, tag(2), true); + cq_verify(cqv); + + GPR_ASSERT(status == GRPC_STATUS_OK); + GPR_ASSERT(0 == grpc_slice_str_cmp(details, "xyz")); + GPR_ASSERT(0 == grpc_slice_str_cmp(call_details.method, "/service/method")); + GPR_ASSERT(0 == call_details.flags); + GPR_ASSERT(was_cancelled == 0); + + grpc_slice_unref(details); + grpc_metadata_array_destroy(&initial_metadata_recv); + grpc_metadata_array_destroy(&trailing_metadata_recv); + grpc_metadata_array_destroy(&request_metadata_recv); + grpc_call_details_destroy(&call_details); + grpc_byte_buffer_destroy(request_payload); + grpc_byte_buffer_destroy(response_payload); + grpc_byte_buffer_destroy(request_payload_recv); + grpc_byte_buffer_destroy(response_payload_recv); + + grpc_call_unref(c); + grpc_call_unref(s); + + cq_verifier_destroy(cqv); + + end_test(&f); + config.tear_down_data(&f); +} + +void retry_send_initial_metadata_refs(grpc_end2end_test_config config) { + GPR_ASSERT(config.feature_mask & FEATURE_MASK_SUPPORTS_CLIENT_CHANNEL); + test_retry_send_initial_metadata_refs(config); +} + +void retry_send_initial_metadata_refs_pre_init(void) {}