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				|  |  | +/*
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				|  |  | + *
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				|  |  | + * Copyright 2017, Google Inc.
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				|  |  | + * All rights reserved.
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				|  |  | + *
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				|  |  | + * Redistribution and use in source and binary forms, with or without
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				|  |  | + * modification, are permitted provided that the following conditions are
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				|  |  | + * met:
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				|  |  | + *
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				|  |  | + *     * Redistributions of source code must retain the above copyright
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				|  |  | + * notice, this list of conditions and the following disclaimer.
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				|  |  | + *     * Redistributions in binary form must reproduce the above
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				|  |  | + * copyright notice, this list of conditions and the following disclaimer
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				|  |  | + * in the documentation and/or other materials provided with the
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				|  |  | + * distribution.
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				|  |  | + *     * Neither the name of Google Inc. nor the names of its
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				|  |  | + * contributors may be used to endorse or promote products derived from
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				|  |  | + * this software without specific prior written permission.
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				|  |  | + *
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				|  |  | + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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				|  |  | + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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				|  |  | + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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				|  |  | + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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				|  |  | + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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				|  |  | + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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				|  |  | + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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				|  |  | + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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				|  |  | + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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				|  |  | + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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				|  |  | + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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				|  |  | + *
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				|  |  | + */
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				|  |  | +
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				|  |  | +#include "test/core/end2end/end2end_tests.h"
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				|  |  | +
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				|  |  | +#include <string.h>
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				|  |  | +
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				|  |  | +#include <grpc/support/alloc.h>
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				|  |  | +#include <grpc/support/log.h>
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				|  |  | +#include <grpc/support/sync.h>
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				|  |  | +#include <grpc/support/thd.h>
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				|  |  | +#include <grpc/support/time.h>
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				|  |  | +#include <grpc/support/useful.h>
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				|  |  | +
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				|  |  | +#include "test/core/end2end/cq_verifier.h"
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				|  |  | +
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				|  |  | +#define MAX_PING_STRIKES 1
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				|  |  | +
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				|  |  | +static void *tag(intptr_t t) { return (void *)t; }
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				|  |  | +
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				|  |  | +static void drain_cq(grpc_completion_queue *cq) {
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				|  |  | +  grpc_event ev;
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				|  |  | +  do {
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				|  |  | +    ev = grpc_completion_queue_next(cq, grpc_timeout_seconds_to_deadline(5),
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				|  |  | +                                    NULL);
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				|  |  | +  } while (ev.type != GRPC_QUEUE_SHUTDOWN);
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				|  |  | +}
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				|  |  | +
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				|  |  | +static void shutdown_server(grpc_end2end_test_fixture *f) {
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				|  |  | +  if (!f->server) return;
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				|  |  | +  grpc_server_destroy(f->server);
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				|  |  | +  f->server = NULL;
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				|  |  | +}
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				|  |  | +
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				|  |  | +static void shutdown_client(grpc_end2end_test_fixture *f) {
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				|  |  | +  if (!f->client) return;
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				|  |  | +  grpc_channel_destroy(f->client);
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				|  |  | +  f->client = NULL;
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				|  |  | +}
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				|  |  | +
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				|  |  | +static void end_test(grpc_end2end_test_fixture *f) {
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				|  |  | +  shutdown_server(f);
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				|  |  | +  shutdown_client(f);
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				|  |  | +
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				|  |  | +  grpc_completion_queue_shutdown(f->cq);
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				|  |  | +  drain_cq(f->cq);
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				|  |  | +  grpc_completion_queue_destroy(f->cq);
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				|  |  | +}
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				|  |  | +
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				|  |  | +static void test_bad_ping(grpc_end2end_test_config config) {
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				|  |  | +  grpc_end2end_test_fixture f = config.create_fixture(NULL, NULL);
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				|  |  | +  cq_verifier *cqv = cq_verifier_create(f.cq);
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				|  |  | +  grpc_arg client_a[] = {{.type = GRPC_ARG_INTEGER,
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				|  |  | +                          .key = GRPC_ARG_HTTP2_MIN_TIME_BETWEEN_PINGS_MS,
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				|  |  | +                          .value.integer = 0},
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				|  |  | +                         {.type = GRPC_ARG_INTEGER,
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				|  |  | +                          .key = GRPC_ARG_HTTP2_MAX_PINGS_WITHOUT_DATA,
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				|  |  | +                          .value.integer = 20}};
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				|  |  | +  grpc_arg server_a[] = {
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				|  |  | +      {.type = GRPC_ARG_INTEGER,
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				|  |  | +       .key = GRPC_ARG_HTTP2_MIN_PING_INTERVAL_WITHOUT_DATA_S,
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				|  |  | +       .value.integer = 300},
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				|  |  | +      {.type = GRPC_ARG_INTEGER,
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				|  |  | +       .key = GRPC_ARG_HTTP2_MAX_PING_STRIKES,
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				|  |  | +       .value.integer = MAX_PING_STRIKES}};
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				|  |  | +  grpc_channel_args client_args = {.num_args = GPR_ARRAY_SIZE(client_a),
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				|  |  | +                                   .args = client_a};
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				|  |  | +  grpc_channel_args server_args = {.num_args = GPR_ARRAY_SIZE(server_a),
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				|  |  | +                                   .args = server_a};
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				|  |  | +
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				|  |  | +  config.init_client(&f, &client_args);
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				|  |  | +  config.init_server(&f, &server_args);
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				|  |  | +
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				|  |  | +  grpc_call *c;
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				|  |  | +  grpc_call *s;
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				|  |  | +  gpr_timespec deadline = grpc_timeout_seconds_to_deadline(10);
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				|  |  | +  grpc_op ops[6];
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				|  |  | +  grpc_op *op;
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				|  |  | +  grpc_metadata_array initial_metadata_recv;
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				|  |  | +  grpc_metadata_array trailing_metadata_recv;
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				|  |  | +  grpc_metadata_array request_metadata_recv;
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				|  |  | +  grpc_call_details call_details;
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				|  |  | +  grpc_status_code status;
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				|  |  | +  grpc_call_error error;
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				|  |  | +  grpc_slice details;
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				|  |  | +  int was_cancelled = 2;
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				|  |  | +
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				|  |  | +  c = grpc_channel_create_call(
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				|  |  | +      f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
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				|  |  | +      grpc_slice_from_static_string("/foo"),
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				|  |  | +      get_host_override_slice("foo.test.google.fr:1234", config), deadline,
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				|  |  | +      NULL);
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				|  |  | +  GPR_ASSERT(c);
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				|  |  | +
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				|  |  | +  grpc_metadata_array_init(&initial_metadata_recv);
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				|  |  | +  grpc_metadata_array_init(&trailing_metadata_recv);
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				|  |  | +  grpc_metadata_array_init(&request_metadata_recv);
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				|  |  | +  grpc_call_details_init(&call_details);
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				|  |  | +
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				|  |  | +  memset(ops, 0, sizeof(ops));
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				|  |  | +  op = ops;
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				|  |  | +  op->op = GRPC_OP_SEND_INITIAL_METADATA;
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				|  |  | +  op->data.send_initial_metadata.count = 0;
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				|  |  | +  op->data.send_initial_metadata.metadata = NULL;
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				|  |  | +  op->flags = 0;
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				|  |  | +  op->reserved = NULL;
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				|  |  | +  op++;
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				|  |  | +  op->op = GRPC_OP_SEND_CLOSE_FROM_CLIENT;
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				|  |  | +  op->flags = 0;
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				|  |  | +  op->reserved = NULL;
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				|  |  | +  op++;
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				|  |  | +  op->op = GRPC_OP_RECV_INITIAL_METADATA;
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				|  |  | +  op->data.recv_initial_metadata.recv_initial_metadata = &initial_metadata_recv;
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				|  |  | +  op->flags = 0;
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				|  |  | +  op->reserved = NULL;
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				|  |  | +  op++;
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				|  |  | +  op->op = GRPC_OP_RECV_STATUS_ON_CLIENT;
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				|  |  | +  op->data.recv_status_on_client.trailing_metadata = &trailing_metadata_recv;
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				|  |  | +  op->data.recv_status_on_client.status = &status;
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				|  |  | +  op->data.recv_status_on_client.status_details = &details;
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				|  |  | +  op->flags = 0;
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				|  |  | +  op->reserved = NULL;
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				|  |  | +  op++;
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				|  |  | +  error = grpc_call_start_batch(c, ops, (size_t)(op - ops), tag(1), NULL);
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				|  |  | +  GPR_ASSERT(GRPC_CALL_OK == error);
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				|  |  | +
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				|  |  | +  error =
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				|  |  | +      grpc_server_request_call(f.server, &s, &call_details,
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				|  |  | +                               &request_metadata_recv, f.cq, f.cq, tag(101));
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				|  |  | +  GPR_ASSERT(GRPC_CALL_OK == error);
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				|  |  | +  CQ_EXPECT_COMPLETION(cqv, tag(101), 1);
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				|  |  | +  cq_verify(cqv);
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				|  |  | +
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				|  |  | +  // Send too many pings to the server to trigger the punishment:
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				|  |  | +  // The first ping is sent after data frames, it won't trigger a ping strike.
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				|  |  | +  // Each of the following pings will trigger a ping strike, and we need at
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				|  |  | +  // least (MAX_PING_STRIKES + 1) strikes to trigger the punishment. So
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				|  |  | +  // (MAX_PING_STRIKES + 2) pings are needed here.
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				|  |  | +  int i;
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				|  |  | +  for (i = 200; i < 202 + MAX_PING_STRIKES; i++) {
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				|  |  | +    grpc_channel_ping(f.client, f.cq, tag(i), NULL);
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				|  |  | +    CQ_EXPECT_COMPLETION(cqv, tag(i), 1);
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				|  |  | +    cq_verify(cqv);
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				|  |  | +  }
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				|  |  | +
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				|  |  | +  memset(ops, 0, sizeof(ops));
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				|  |  | +  op = ops;
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				|  |  | +  op->op = GRPC_OP_SEND_INITIAL_METADATA;
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				|  |  | +  op->data.send_initial_metadata.count = 0;
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				|  |  | +  op->flags = 0;
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				|  |  | +  op->reserved = NULL;
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				|  |  | +  op++;
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				|  |  | +  op->op = GRPC_OP_SEND_STATUS_FROM_SERVER;
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				|  |  | +  op->data.send_status_from_server.trailing_metadata_count = 0;
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				|  |  | +  op->data.send_status_from_server.status = GRPC_STATUS_UNIMPLEMENTED;
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				|  |  | +  grpc_slice status_details = grpc_slice_from_static_string("xyz");
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				|  |  | +  op->data.send_status_from_server.status_details = &status_details;
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				|  |  | +  op->flags = 0;
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				|  |  | +  op->reserved = NULL;
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				|  |  | +  op++;
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				|  |  | +  op->op = GRPC_OP_RECV_CLOSE_ON_SERVER;
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				|  |  | +  op->data.recv_close_on_server.cancelled = &was_cancelled;
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				|  |  | +  op->flags = 0;
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				|  |  | +  op->reserved = NULL;
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				|  |  | +  op++;
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				|  |  | +  error = grpc_call_start_batch(s, ops, (size_t)(op - ops), tag(102), NULL);
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				|  |  | +  GPR_ASSERT(GRPC_CALL_OK == error);
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				|  |  | +
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				|  |  | +  CQ_EXPECT_COMPLETION(cqv, tag(102), 1);
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				|  |  | +  CQ_EXPECT_COMPLETION(cqv, tag(1), 1);
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				|  |  | +  cq_verify(cqv);
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				|  |  | +
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				|  |  | +  grpc_server_shutdown_and_notify(f.server, f.cq, tag(0xdead));
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				|  |  | +  CQ_EXPECT_COMPLETION(cqv, tag(0xdead), 1);
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				|  |  | +  cq_verify(cqv);
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				|  |  | +
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				|  |  | +  grpc_call_destroy(s);
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				|  |  | +
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				|  |  | +  // The connection should be closed immediately after the misbehaved pings,
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				|  |  | +  // the in-progress RPC should fail.
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				|  |  | +  GPR_ASSERT(status == GRPC_STATUS_UNAVAILABLE);
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				|  |  | +  GPR_ASSERT(0 == grpc_slice_str_cmp(details, "Endpoint read failed"));
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				|  |  | +  GPR_ASSERT(0 == grpc_slice_str_cmp(call_details.method, "/foo"));
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				|  |  | +  validate_host_override_string("foo.test.google.fr:1234", call_details.host,
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				|  |  | +                                config);
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				|  |  | +  GPR_ASSERT(was_cancelled == 1);
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				|  |  | +
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				|  |  | +  grpc_slice_unref(details);
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				|  |  | +  grpc_metadata_array_destroy(&initial_metadata_recv);
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				|  |  | +  grpc_metadata_array_destroy(&trailing_metadata_recv);
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				|  |  | +  grpc_metadata_array_destroy(&request_metadata_recv);
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				|  |  | +  grpc_call_details_destroy(&call_details);
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				|  |  | +  grpc_call_destroy(c);
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				|  |  | +  cq_verifier_destroy(cqv);
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				|  |  | +  end_test(&f);
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				|  |  | +  config.tear_down_data(&f);
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				|  |  | +}
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				|  |  | +
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				|  |  | +void bad_ping(grpc_end2end_test_config config) {
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				|  |  | +  GPR_ASSERT(config.feature_mask & FEATURE_MASK_SUPPORTS_DELAYED_CONNECTION);
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				|  |  | +  test_bad_ping(config);
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				|  |  | +}
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				|  |  | +
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				|  |  | +void bad_ping_pre_init(void) {}
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