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/*
*
* 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 <string.h>
#include <grpc/support/alloc.h>
#include <grpc/support/log.h>
#include <grpc/support/sync.h>
#include <grpc/support/time.h>
#include "src/core/lib/gpr/useful.h"
#include "test/core/end2end/cq_verifier.h"
#define MAX_PING_STRIKES 2
static void* tag(intptr_t t) { return (void*)t; }
static void drain_cq(grpc_completion_queue* cq) {
grpc_event ev;
do {
ev = grpc_completion_queue_next(cq, grpc_timeout_seconds_to_deadline(5),
nullptr);
} while (ev.type != GRPC_QUEUE_SHUTDOWN);
}
static void shutdown_server(grpc_end2end_test_fixture* f) {
if (!f->server) return;
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);
}
// Send more pings than server allows to trigger server's GOAWAY.
static void test_bad_ping(grpc_end2end_test_config config) {
grpc_end2end_test_fixture f = config.create_fixture(nullptr, nullptr);
cq_verifier* cqv = cq_verifier_create(f.cq);
grpc_arg client_a[3];
client_a[0].type = GRPC_ARG_INTEGER;
client_a[0].key =
const_cast<char*>(GRPC_ARG_HTTP2_MIN_SENT_PING_INTERVAL_WITHOUT_DATA_MS);
client_a[0].value.integer = 10;
client_a[1].type = GRPC_ARG_INTEGER;
client_a[1].key = const_cast<char*>(GRPC_ARG_HTTP2_MAX_PINGS_WITHOUT_DATA);
client_a[1].value.integer = 0;
client_a[2].type = GRPC_ARG_INTEGER;
client_a[2].key = const_cast<char*>(GRPC_ARG_HTTP2_BDP_PROBE);
client_a[2].value.integer = 0;
grpc_arg server_a[3];
server_a[0].type = GRPC_ARG_INTEGER;
server_a[0].key =
const_cast<char*>(GRPC_ARG_HTTP2_MIN_RECV_PING_INTERVAL_WITHOUT_DATA_MS);
server_a[0].value.integer = 300000 /* 5 minutes */;
server_a[1].type = GRPC_ARG_INTEGER;
server_a[1].key = const_cast<char*>(GRPC_ARG_HTTP2_MAX_PING_STRIKES);
server_a[1].value.integer = MAX_PING_STRIKES;
server_a[2].type = GRPC_ARG_INTEGER;
server_a[2].key = const_cast<char*>(GRPC_ARG_HTTP2_BDP_PROBE);
server_a[2].value.integer = 0;
grpc_channel_args client_args = {GPR_ARRAY_SIZE(client_a), client_a};
grpc_channel_args server_args = {GPR_ARRAY_SIZE(server_a), server_a};
config.init_client(&f, &client_args);
config.init_server(&f, &server_args);
grpc_call* c;
grpc_call* s;
gpr_timespec deadline = grpc_timeout_seconds_to_deadline(10);
grpc_op ops[6];
grpc_op* op;
grpc_metadata_array initial_metadata_recv;
grpc_metadata_array trailing_metadata_recv;
grpc_metadata_array request_metadata_recv;
grpc_call_details call_details;
grpc_status_code status;
grpc_call_error error;
grpc_slice details;
int was_cancelled = 2;
c = grpc_channel_create_call(f.client, nullptr, GRPC_PROPAGATE_DEFAULTS, f.cq,
grpc_slice_from_static_string("/foo"), nullptr,
deadline, nullptr);
GPR_ASSERT(c);
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);
memset(ops, 0, sizeof(ops));
op = ops;
op->op = GRPC_OP_SEND_INITIAL_METADATA;
op->data.send_initial_metadata.count = 0;
op->data.send_initial_metadata.metadata = nullptr;
op->flags = 0;
op->reserved = nullptr;
op++;
op->op = GRPC_OP_SEND_CLOSE_FROM_CLIENT;
op->flags = 0;
op->reserved = nullptr;
op++;
op->op = GRPC_OP_RECV_INITIAL_METADATA;
op->data.recv_initial_metadata.recv_initial_metadata = &initial_metadata_recv;
op->flags = 0;
op->reserved = nullptr;
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->flags = 0;
op->reserved = nullptr;
op++;
error = grpc_call_start_batch(c, ops, static_cast<size_t>(op - ops), tag(1),
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), 1);
cq_verify(cqv);
// Send too many pings to the server to trigger the punishment:
// The first ping will let server mark its last_recv time. Afterwards, each
// ping will trigger a ping strike, and we need at least MAX_PING_STRIKES
// strikes to trigger the punishment. So (MAX_PING_STRIKES + 2) pings are
// needed here.
int i;
for (i = 1; i <= MAX_PING_STRIKES + 2; i++) {
grpc_channel_ping(f.client, f.cq, tag(200 + i), nullptr);
CQ_EXPECT_COMPLETION(cqv, tag(200 + i), 1);
if (i == MAX_PING_STRIKES + 2) {
CQ_EXPECT_COMPLETION(cqv, tag(1), 1);
}
cq_verify(cqv);
}
memset(ops, 0, sizeof(ops));
op = ops;
op->op = GRPC_OP_SEND_INITIAL_METADATA;
op->data.send_initial_metadata.count = 0;
op->flags = 0;
op->reserved = nullptr;
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_UNIMPLEMENTED;
grpc_slice status_details = grpc_slice_from_static_string("xyz");
op->data.send_status_from_server.status_details = &status_details;
op->flags = 0;
op->reserved = nullptr;
op++;
op->op = GRPC_OP_RECV_CLOSE_ON_SERVER;
op->data.recv_close_on_server.cancelled = &was_cancelled;
op->flags = 0;
op->reserved = nullptr;
op++;
error = grpc_call_start_batch(s, ops, static_cast<size_t>(op - ops), tag(102),
nullptr);
GPR_ASSERT(GRPC_CALL_OK == error);
CQ_EXPECT_COMPLETION(cqv, tag(102), 1);
cq_verify(cqv);
grpc_server_shutdown_and_notify(f.server, f.cq, tag(0xdead));
CQ_EXPECT_COMPLETION(cqv, tag(0xdead), 1);
cq_verify(cqv);
grpc_call_unref(s);
// The connection should be closed immediately after the misbehaved pings,
// the in-progress RPC should fail.
GPR_ASSERT(status == GRPC_STATUS_UNAVAILABLE);
GPR_ASSERT(0 == grpc_slice_str_cmp(call_details.method, "/foo"));
GPR_ASSERT(was_cancelled == 1);
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_call_unref(c);
cq_verifier_destroy(cqv);
end_test(&f);
config.tear_down_data(&f);
}
// Try sending more pings than server allows, but server should be fine because
// max_pings_without_data should limit pings sent out on wire.
static void test_pings_without_data(grpc_end2end_test_config config) {
grpc_end2end_test_fixture f = config.create_fixture(nullptr, nullptr);
cq_verifier* cqv = cq_verifier_create(f.cq);
grpc_arg client_a[3];
client_a[0].type = GRPC_ARG_INTEGER;
client_a[0].key =
const_cast<char*>(GRPC_ARG_HTTP2_MIN_SENT_PING_INTERVAL_WITHOUT_DATA_MS);
client_a[0].value.integer = 10;
// Only allow MAX_PING_STRIKES pings without data (DATA/HEADERS/WINDOW_UPDATE)
// so that the transport will throttle the excess pings.
client_a[1].type = GRPC_ARG_INTEGER;
client_a[1].key = const_cast<char*>(GRPC_ARG_HTTP2_MAX_PINGS_WITHOUT_DATA);
client_a[1].value.integer = MAX_PING_STRIKES;
client_a[2].type = GRPC_ARG_INTEGER;
client_a[2].key = const_cast<char*>(GRPC_ARG_HTTP2_BDP_PROBE);
client_a[2].value.integer = 0;
grpc_arg server_a[3];
server_a[0].type = GRPC_ARG_INTEGER;
server_a[0].key =
const_cast<char*>(GRPC_ARG_HTTP2_MIN_RECV_PING_INTERVAL_WITHOUT_DATA_MS);
server_a[0].value.integer = 300000 /* 5 minutes */;
server_a[1].type = GRPC_ARG_INTEGER;
server_a[1].key = const_cast<char*>(GRPC_ARG_HTTP2_MAX_PING_STRIKES);
server_a[1].value.integer = MAX_PING_STRIKES;
server_a[2].type = GRPC_ARG_INTEGER;
server_a[2].key = const_cast<char*>(GRPC_ARG_HTTP2_BDP_PROBE);
server_a[2].value.integer = 0;
grpc_channel_args client_args = {GPR_ARRAY_SIZE(client_a), client_a};
grpc_channel_args server_args = {GPR_ARRAY_SIZE(server_a), server_a};
config.init_client(&f, &client_args);
config.init_server(&f, &server_args);
grpc_call* c;
grpc_call* s;
gpr_timespec deadline = grpc_timeout_seconds_to_deadline(10);
grpc_op ops[6];
grpc_op* op;
grpc_metadata_array initial_metadata_recv;
grpc_metadata_array trailing_metadata_recv;
grpc_metadata_array request_metadata_recv;
grpc_call_details call_details;
grpc_status_code status;
grpc_call_error error;
grpc_slice details;
int was_cancelled = 2;
c = grpc_channel_create_call(f.client, nullptr, GRPC_PROPAGATE_DEFAULTS, f.cq,
grpc_slice_from_static_string("/foo"), nullptr,
deadline, nullptr);
GPR_ASSERT(c);
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);
memset(ops, 0, sizeof(ops));
op = ops;
op->op = GRPC_OP_SEND_INITIAL_METADATA;
op->data.send_initial_metadata.count = 0;
op->data.send_initial_metadata.metadata = nullptr;
op->flags = 0;
op->reserved = nullptr;
op++;
op->op = GRPC_OP_SEND_CLOSE_FROM_CLIENT;
op->flags = 0;
op->reserved = nullptr;
op++;
op->op = GRPC_OP_RECV_INITIAL_METADATA;
op->data.recv_initial_metadata.recv_initial_metadata = &initial_metadata_recv;
op->flags = 0;
op->reserved = nullptr;
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->flags = 0;
op->reserved = nullptr;
op++;
error = grpc_call_start_batch(c, ops, static_cast<size_t>(op - ops), tag(1),
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), 1);
cq_verify(cqv);
// Send too many pings to the server similar to the prevous test case.
// However, since we set the MAX_PINGS_WITHOUT_DATA at the client side, only
// MAX_PING_STRIKES will actually be sent and the rpc will still succeed.
int i;
for (i = 1; i <= MAX_PING_STRIKES + 2; i++) {
grpc_channel_ping(f.client, f.cq, tag(200 + i), nullptr);
if (i <= MAX_PING_STRIKES) {
CQ_EXPECT_COMPLETION(cqv, tag(200 + i), 1);
}
cq_verify(cqv);
}
memset(ops, 0, sizeof(ops));
op = ops;
op->op = GRPC_OP_SEND_INITIAL_METADATA;
op->data.send_initial_metadata.count = 0;
op->flags = 0;
op->reserved = nullptr;
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_UNIMPLEMENTED;
grpc_slice status_details = grpc_slice_from_static_string("xyz");
op->data.send_status_from_server.status_details = &status_details;
op->flags = 0;
op->reserved = nullptr;
op++;
op->op = GRPC_OP_RECV_CLOSE_ON_SERVER;
op->data.recv_close_on_server.cancelled = &was_cancelled;
op->flags = 0;
op->reserved = nullptr;
op++;
error = grpc_call_start_batch(s, ops, static_cast<size_t>(op - ops), tag(102),
nullptr);
GPR_ASSERT(GRPC_CALL_OK == error);
CQ_EXPECT_COMPLETION(cqv, tag(102), 1);
// Client call should return.
CQ_EXPECT_COMPLETION(cqv, tag(1), 1);
cq_verify(cqv);
grpc_server_shutdown_and_notify(f.server, f.cq, tag(0xdead));
CQ_EXPECT_COMPLETION(cqv, tag(0xdead), 1);
// Also expect the previously blocked pings to complete with an error
CQ_EXPECT_COMPLETION(cqv, tag(200 + MAX_PING_STRIKES + 1), 0);
CQ_EXPECT_COMPLETION(cqv, tag(200 + MAX_PING_STRIKES + 2), 0);
cq_verify(cqv);
grpc_call_unref(s);
// The rpc should be successful.
GPR_ASSERT(status == GRPC_STATUS_UNIMPLEMENTED);
GPR_ASSERT(0 == grpc_slice_str_cmp(call_details.method, "/foo"));
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_call_unref(c);
cq_verifier_destroy(cqv);
end_test(&f);
config.tear_down_data(&f);
}
void bad_ping(grpc_end2end_test_config config) {
GPR_ASSERT(config.feature_mask & FEATURE_MASK_SUPPORTS_DELAYED_CONNECTION);
test_bad_ping(config);
test_pings_without_data(config);
}
void bad_ping_pre_init(void) {}
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