1 //
2 //
3 // Copyright 2016 gRPC authors.
4 //
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
8 //
9 // http://www.apache.org/licenses/LICENSE-2.0
10 //
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.
16 //
17 //
18
19 #include "test/cpp/interop/http2_client.h"
20
21 #include <grpc/support/alloc.h>
22 #include <grpcpp/channel.h>
23 #include <grpcpp/client_context.h>
24
25 #include <thread>
26
27 #include "absl/flags/flag.h"
28 #include "absl/log/check.h"
29 #include "absl/log/log.h"
30 #include "absl/strings/str_format.h"
31 #include "src/core/util/crash.h"
32 #include "src/core/util/string.h"
33 #include "src/core/util/useful.h"
34 #include "src/proto/grpc/testing/messages.pb.h"
35 #include "src/proto/grpc/testing/test.grpc.pb.h"
36 #include "test/cpp/util/create_test_channel.h"
37 #include "test/cpp/util/test_config.h"
38
39 namespace grpc {
40 namespace testing {
41
42 namespace {
43 const int kLargeRequestSize = 271828;
44 const int kLargeResponseSize = 314159;
45 } // namespace
46
ServiceStub(const std::shared_ptr<Channel> & channel)47 Http2Client::ServiceStub::ServiceStub(const std::shared_ptr<Channel>& channel)
48 : channel_(channel) {
49 stub_ = TestService::NewStub(channel);
50 }
51
Get()52 TestService::Stub* Http2Client::ServiceStub::Get() { return stub_.get(); }
53
Http2Client(const std::shared_ptr<Channel> & channel)54 Http2Client::Http2Client(const std::shared_ptr<Channel>& channel)
55 : serviceStub_(channel),
56 channel_(channel),
57 defaultRequest_(BuildDefaultRequest()) {}
58
AssertStatusCode(const Status & s,StatusCode expected_code)59 bool Http2Client::AssertStatusCode(const Status& s, StatusCode expected_code) {
60 if (s.error_code() == expected_code) {
61 return true;
62 }
63
64 grpc_core::Crash(absl::StrFormat(
65 "Error status code: %d (expected: %d), message: %s", s.error_code(),
66 expected_code, s.error_message().c_str()));
67 }
68
SendUnaryCall(SimpleResponse * response)69 Status Http2Client::SendUnaryCall(SimpleResponse* response) {
70 ClientContext context;
71 return serviceStub_.Get()->UnaryCall(&context, defaultRequest_, response);
72 }
73
BuildDefaultRequest()74 SimpleRequest Http2Client::BuildDefaultRequest() {
75 SimpleRequest request;
76 request.set_response_size(kLargeResponseSize);
77 std::string payload(kLargeRequestSize, '\0');
78 request.mutable_payload()->set_body(payload.c_str(), kLargeRequestSize);
79 return request;
80 }
81
DoRstAfterHeader()82 bool Http2Client::DoRstAfterHeader() {
83 VLOG(2) << "Sending RPC and expecting reset stream after header";
84
85 SimpleResponse response;
86 AssertStatusCode(SendUnaryCall(&response), grpc::StatusCode::INTERNAL);
87 CHECK(!response.has_payload()); // no data should be received
88
89 VLOG(2) << "Done testing reset stream after header";
90 return true;
91 }
92
DoRstAfterData()93 bool Http2Client::DoRstAfterData() {
94 VLOG(2) << "Sending RPC and expecting reset stream after data";
95
96 SimpleResponse response;
97 AssertStatusCode(SendUnaryCall(&response), grpc::StatusCode::INTERNAL);
98 // There is no guarantee that data would be received.
99
100 VLOG(2) << "Done testing reset stream after data";
101 return true;
102 }
103
DoRstDuringData()104 bool Http2Client::DoRstDuringData() {
105 VLOG(2) << "Sending RPC and expecting reset stream during data";
106
107 SimpleResponse response;
108 AssertStatusCode(SendUnaryCall(&response), grpc::StatusCode::INTERNAL);
109 CHECK(!response.has_payload()); // no data should be received
110
111 VLOG(2) << "Done testing reset stream during data";
112 return true;
113 }
114
DoGoaway()115 bool Http2Client::DoGoaway() {
116 VLOG(2) << "Sending two RPCs and expecting goaway";
117 SimpleResponse response;
118 AssertStatusCode(SendUnaryCall(&response), grpc::StatusCode::OK);
119 CHECK(response.payload().body() == std::string(kLargeResponseSize, '\0'));
120
121 // Sleep for one second to give time for client to receive goaway frame.
122 gpr_timespec sleep_time = gpr_time_add(
123 gpr_now(GPR_CLOCK_REALTIME), gpr_time_from_seconds(1, GPR_TIMESPAN));
124 gpr_sleep_until(sleep_time);
125
126 response.Clear();
127 AssertStatusCode(SendUnaryCall(&response), grpc::StatusCode::OK);
128 CHECK(response.payload().body() == std::string(kLargeResponseSize, '\0'));
129 VLOG(2) << "Done testing goaway";
130 return true;
131 }
132
DoPing()133 bool Http2Client::DoPing() {
134 VLOG(2) << "Sending RPC and expecting ping";
135 SimpleResponse response;
136 AssertStatusCode(SendUnaryCall(&response), grpc::StatusCode::OK);
137 CHECK(response.payload().body() == std::string(kLargeResponseSize, '\0'));
138 VLOG(2) << "Done testing ping";
139 return true;
140 }
141
MaxStreamsWorker(const std::shared_ptr<grpc::Channel> &)142 void Http2Client::MaxStreamsWorker(
143 const std::shared_ptr<grpc::Channel>& /*channel*/) {
144 SimpleResponse response;
145 AssertStatusCode(SendUnaryCall(&response), grpc::StatusCode::OK);
146 CHECK(response.payload().body() == std::string(kLargeResponseSize, '\0'));
147 }
148
DoMaxStreams()149 bool Http2Client::DoMaxStreams() {
150 VLOG(2) << "Testing max streams";
151
152 // Make an initial call on the channel to ensure the server's max streams
153 // setting is received
154 SimpleResponse response;
155 AssertStatusCode(SendUnaryCall(&response), grpc::StatusCode::OK);
156 CHECK(response.payload().body() == std::string(kLargeResponseSize, '\0'));
157
158 std::vector<std::thread> test_threads;
159 test_threads.reserve(10);
160 for (int i = 0; i < 10; i++) {
161 test_threads.emplace_back(
162 std::thread(&Http2Client::MaxStreamsWorker, this, channel_));
163 }
164
165 for (auto it = test_threads.begin(); it != test_threads.end(); it++) {
166 it->join();
167 }
168
169 VLOG(2) << "Done testing max streams";
170 return true;
171 }
172
173 } // namespace testing
174 } // namespace grpc
175
176 ABSL_FLAG(int32_t, server_port, 0, "Server port.");
177 ABSL_FLAG(std::string, server_host, "localhost", "Server host to connect to");
178 ABSL_FLAG(std::string, test_case, "rst_after_header",
179 "Configure different test cases. Valid options are:\n\n"
180 "goaway\n"
181 "max_streams\n"
182 "ping\n"
183 "rst_after_data\n"
184 "rst_after_header\n"
185 "rst_during_data\n");
186
main(int argc,char ** argv)187 int main(int argc, char** argv) {
188 grpc::testing::InitTest(&argc, &argv, true);
189 CHECK(absl::GetFlag(FLAGS_server_port));
190 const int host_port_buf_size = 1024;
191 char host_port[host_port_buf_size];
192 snprintf(host_port, host_port_buf_size, "%s:%d",
193 absl::GetFlag(FLAGS_server_host).c_str(),
194 absl::GetFlag(FLAGS_server_port));
195 std::shared_ptr<grpc::Channel> channel =
196 grpc::CreateTestChannel(host_port, grpc::testing::INSECURE);
197 CHECK(channel->WaitForConnected(gpr_time_add(
198 gpr_now(GPR_CLOCK_REALTIME), gpr_time_from_seconds(300, GPR_TIMESPAN))));
199 grpc::testing::Http2Client client(channel);
200 LOG(INFO) << "Testing case: " << absl::GetFlag(FLAGS_test_case);
201 int ret = 0;
202 if (absl::GetFlag(FLAGS_test_case) == "rst_after_header") {
203 client.DoRstAfterHeader();
204 } else if (absl::GetFlag(FLAGS_test_case) == "rst_after_data") {
205 client.DoRstAfterData();
206 } else if (absl::GetFlag(FLAGS_test_case) == "rst_during_data") {
207 client.DoRstDuringData();
208 } else if (absl::GetFlag(FLAGS_test_case) == "goaway") {
209 client.DoGoaway();
210 } else if (absl::GetFlag(FLAGS_test_case) == "ping") {
211 client.DoPing();
212 } else if (absl::GetFlag(FLAGS_test_case) == "max_streams") {
213 client.DoMaxStreams();
214 } else {
215 const char* testcases[] = {
216 "goaway", "max_streams", "ping",
217 "rst_after_data", "rst_after_header", "rst_during_data"};
218 char* joined_testcases =
219 gpr_strjoin_sep(testcases, GPR_ARRAY_SIZE(testcases), "\n", nullptr);
220
221 LOG(ERROR) << "Unsupported test case " << absl::GetFlag(FLAGS_test_case)
222 << ". Valid options are\n"
223 << joined_testcases;
224 gpr_free(joined_testcases);
225 ret = 1;
226 }
227
228 return ret;
229 }
230