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//
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//
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// Copyright 2016 gRPC authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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//
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#include "test/cpp/interop/http2_client.h"
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#include <thread>
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#include "absl/flags/flag.h"
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#include "absl/strings/str_format.h"
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#include <grpc/support/alloc.h>
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#include <grpc/support/log.h>
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#include <grpcpp/channel.h>
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#include <grpcpp/client_context.h>
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#include "src/core/lib/gpr/string.h"
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#include "src/core/lib/gpr/useful.h"
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#include "src/core/lib/gprpp/crash.h"
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#include "src/proto/grpc/testing/messages.pb.h"
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#include "src/proto/grpc/testing/test.grpc.pb.h"
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#include "test/cpp/util/create_test_channel.h"
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#include "test/cpp/util/test_config.h"
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namespace grpc {
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namespace testing {
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namespace {
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const int kLargeRequestSize = 271828;
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const int kLargeResponseSize = 314159;
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} // namespace
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Http2Client::ServiceStub::ServiceStub(const std::shared_ptr<Channel>& channel)
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: channel_(channel) {
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stub_ = TestService::NewStub(channel);
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}
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TestService::Stub* Http2Client::ServiceStub::Get() { return stub_.get(); }
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Http2Client::Http2Client(const std::shared_ptr<Channel>& channel)
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: serviceStub_(channel),
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channel_(channel),
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defaultRequest_(BuildDefaultRequest()) {}
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bool Http2Client::AssertStatusCode(const Status& s, StatusCode expected_code) {
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if (s.error_code() == expected_code) {
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return true;
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}
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grpc_core::Crash(absl::StrFormat(
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"Error status code: %d (expected: %d), message: %s", s.error_code(),
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expected_code, s.error_message().c_str()));
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}
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Status Http2Client::SendUnaryCall(SimpleResponse* response) {
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ClientContext context;
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return serviceStub_.Get()->UnaryCall(&context, defaultRequest_, response);
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}
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SimpleRequest Http2Client::BuildDefaultRequest() {
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SimpleRequest request;
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request.set_response_size(kLargeResponseSize);
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std::string payload(kLargeRequestSize, '\0');
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request.mutable_payload()->set_body(payload.c_str(), kLargeRequestSize);
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return request;
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}
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bool Http2Client::DoRstAfterHeader() {
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gpr_log(GPR_DEBUG, "Sending RPC and expecting reset stream after header");
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SimpleResponse response;
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AssertStatusCode(SendUnaryCall(&response), grpc::StatusCode::INTERNAL);
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GPR_ASSERT(!response.has_payload()); // no data should be received
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gpr_log(GPR_DEBUG, "Done testing reset stream after header");
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return true;
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}
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bool Http2Client::DoRstAfterData() {
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gpr_log(GPR_DEBUG, "Sending RPC and expecting reset stream after data");
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SimpleResponse response;
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AssertStatusCode(SendUnaryCall(&response), grpc::StatusCode::INTERNAL);
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// There is no guarantee that data would be received.
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gpr_log(GPR_DEBUG, "Done testing reset stream after data");
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return true;
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}
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bool Http2Client::DoRstDuringData() {
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gpr_log(GPR_DEBUG, "Sending RPC and expecting reset stream during data");
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SimpleResponse response;
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AssertStatusCode(SendUnaryCall(&response), grpc::StatusCode::INTERNAL);
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GPR_ASSERT(!response.has_payload()); // no data should be received
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gpr_log(GPR_DEBUG, "Done testing reset stream during data");
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return true;
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}
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bool Http2Client::DoGoaway() {
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gpr_log(GPR_DEBUG, "Sending two RPCs and expecting goaway");
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SimpleResponse response;
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AssertStatusCode(SendUnaryCall(&response), grpc::StatusCode::OK);
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GPR_ASSERT(response.payload().body() ==
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std::string(kLargeResponseSize, '\0'));
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// Sleep for one second to give time for client to receive goaway frame.
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gpr_timespec sleep_time = gpr_time_add(
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gpr_now(GPR_CLOCK_REALTIME), gpr_time_from_seconds(1, GPR_TIMESPAN));
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gpr_sleep_until(sleep_time);
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response.Clear();
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AssertStatusCode(SendUnaryCall(&response), grpc::StatusCode::OK);
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GPR_ASSERT(response.payload().body() ==
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std::string(kLargeResponseSize, '\0'));
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gpr_log(GPR_DEBUG, "Done testing goaway");
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return true;
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}
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bool Http2Client::DoPing() {
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gpr_log(GPR_DEBUG, "Sending RPC and expecting ping");
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SimpleResponse response;
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AssertStatusCode(SendUnaryCall(&response), grpc::StatusCode::OK);
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GPR_ASSERT(response.payload().body() ==
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std::string(kLargeResponseSize, '\0'));
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gpr_log(GPR_DEBUG, "Done testing ping");
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return true;
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}
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void Http2Client::MaxStreamsWorker(
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const std::shared_ptr<grpc::Channel>& /*channel*/) {
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SimpleResponse response;
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AssertStatusCode(SendUnaryCall(&response), grpc::StatusCode::OK);
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GPR_ASSERT(response.payload().body() ==
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std::string(kLargeResponseSize, '\0'));
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}
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bool Http2Client::DoMaxStreams() {
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gpr_log(GPR_DEBUG, "Testing max streams");
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// Make an initial call on the channel to ensure the server's max streams
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// setting is received
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SimpleResponse response;
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AssertStatusCode(SendUnaryCall(&response), grpc::StatusCode::OK);
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GPR_ASSERT(response.payload().body() ==
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std::string(kLargeResponseSize, '\0'));
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std::vector<std::thread> test_threads;
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test_threads.reserve(10);
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for (int i = 0; i < 10; i++) {
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test_threads.emplace_back(
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std::thread(&Http2Client::MaxStreamsWorker, this, channel_));
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}
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for (auto it = test_threads.begin(); it != test_threads.end(); it++) {
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it->join();
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}
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gpr_log(GPR_DEBUG, "Done testing max streams");
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return true;
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}
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} // namespace testing
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} // namespace grpc
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ABSL_FLAG(int32_t, server_port, 0, "Server port.");
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ABSL_FLAG(std::string, server_host, "localhost", "Server host to connect to");
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ABSL_FLAG(std::string, test_case, "rst_after_header",
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"Configure different test cases. Valid options are:\n\n"
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"goaway\n"
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"max_streams\n"
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"ping\n"
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"rst_after_data\n"
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"rst_after_header\n"
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"rst_during_data\n");
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int main(int argc, char** argv) {
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grpc::testing::InitTest(&argc, &argv, true);
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GPR_ASSERT(absl::GetFlag(FLAGS_server_port));
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const int host_port_buf_size = 1024;
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char host_port[host_port_buf_size];
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snprintf(host_port, host_port_buf_size, "%s:%d",
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absl::GetFlag(FLAGS_server_host).c_str(),
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absl::GetFlag(FLAGS_server_port));
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std::shared_ptr<grpc::Channel> channel =
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grpc::CreateTestChannel(host_port, grpc::testing::INSECURE);
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GPR_ASSERT(channel->WaitForConnected(gpr_time_add(
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gpr_now(GPR_CLOCK_REALTIME), gpr_time_from_seconds(300, GPR_TIMESPAN))));
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grpc::testing::Http2Client client(channel);
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gpr_log(GPR_INFO, "Testing case: %s", absl::GetFlag(FLAGS_test_case).c_str());
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int ret = 0;
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if (absl::GetFlag(FLAGS_test_case) == "rst_after_header") {
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client.DoRstAfterHeader();
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} else if (absl::GetFlag(FLAGS_test_case) == "rst_after_data") {
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client.DoRstAfterData();
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} else if (absl::GetFlag(FLAGS_test_case) == "rst_during_data") {
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client.DoRstDuringData();
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} else if (absl::GetFlag(FLAGS_test_case) == "goaway") {
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client.DoGoaway();
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} else if (absl::GetFlag(FLAGS_test_case) == "ping") {
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client.DoPing();
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} else if (absl::GetFlag(FLAGS_test_case) == "max_streams") {
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client.DoMaxStreams();
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} else {
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const char* testcases[] = {
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"goaway", "max_streams", "ping",
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"rst_after_data", "rst_after_header", "rst_during_data"};
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char* joined_testcases =
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gpr_strjoin_sep(testcases, GPR_ARRAY_SIZE(testcases), "\n", nullptr);
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gpr_log(GPR_ERROR, "Unsupported test case %s. Valid options are\n%s",
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absl::GetFlag(FLAGS_test_case).c_str(), joined_testcases);
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gpr_free(joined_testcases);
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ret = 1;
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}
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return ret;
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}
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