1 /*
2 *
3 * Copyright 2015 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 <grpc/grpc.h>
20 #include <grpc/support/log.h>
21 #include <grpc/support/time.h>
22 #include <grpcpp/channel.h>
23 #include <grpcpp/client_context.h>
24 #include <grpcpp/create_channel.h>
25 #include <grpcpp/server.h>
26 #include <grpcpp/server_builder.h>
27 #include <grpcpp/server_context.h>
28
29 #include "src/proto/grpc/testing/duplicate/echo_duplicate.grpc.pb.h"
30 #include "src/proto/grpc/testing/echo.grpc.pb.h"
31 #include "test/core/util/port.h"
32 #include "test/core/util/test_config.h"
33 #include "test/cpp/util/subprocess.h"
34
35 #include <gtest/gtest.h>
36
37 using grpc::testing::EchoRequest;
38 using grpc::testing::EchoResponse;
39 using std::chrono::system_clock;
40
41 static std::string g_root;
42
43 namespace grpc {
44 namespace testing {
45
46 namespace {
47
48 class CrashTest : public ::testing::Test {
49 protected:
CrashTest()50 CrashTest() {}
51
CreateServerAndStub()52 std::unique_ptr<grpc::testing::EchoTestService::Stub> CreateServerAndStub() {
53 auto port = grpc_pick_unused_port_or_die();
54 std::ostringstream addr_stream;
55 addr_stream << "localhost:" << port;
56 auto addr = addr_stream.str();
57 server_.reset(new SubProcess({
58 g_root + "/client_crash_test_server",
59 "--address=" + addr,
60 }));
61 GPR_ASSERT(server_);
62 return grpc::testing::EchoTestService::NewStub(
63 CreateChannel(addr, InsecureChannelCredentials()));
64 }
65
KillServer()66 void KillServer() { server_.reset(); }
67
68 private:
69 std::unique_ptr<SubProcess> server_;
70 };
71
TEST_F(CrashTest,KillBeforeWrite)72 TEST_F(CrashTest, KillBeforeWrite) {
73 auto stub = CreateServerAndStub();
74
75 EchoRequest request;
76 EchoResponse response;
77 ClientContext context;
78 context.set_wait_for_ready(true);
79
80 auto stream = stub->BidiStream(&context);
81
82 request.set_message("Hello");
83 EXPECT_TRUE(stream->Write(request));
84 EXPECT_TRUE(stream->Read(&response));
85 EXPECT_EQ(response.message(), request.message());
86
87 KillServer();
88
89 request.set_message("You should be dead");
90 // This may succeed or fail depending on the state of the TCP connection
91 stream->Write(request);
92 // But the read will definitely fail
93 EXPECT_FALSE(stream->Read(&response));
94
95 EXPECT_FALSE(stream->Finish().ok());
96 }
97
TEST_F(CrashTest,KillAfterWrite)98 TEST_F(CrashTest, KillAfterWrite) {
99 auto stub = CreateServerAndStub();
100
101 EchoRequest request;
102 EchoResponse response;
103 ClientContext context;
104 context.set_wait_for_ready(true);
105
106 auto stream = stub->BidiStream(&context);
107
108 request.set_message("Hello");
109 EXPECT_TRUE(stream->Write(request));
110 EXPECT_TRUE(stream->Read(&response));
111 EXPECT_EQ(response.message(), request.message());
112
113 request.set_message("I'm going to kill you");
114 EXPECT_TRUE(stream->Write(request));
115
116 KillServer();
117
118 // This may succeed or fail depending on how quick the server was
119 stream->Read(&response);
120
121 EXPECT_FALSE(stream->Finish().ok());
122 }
123
124 } // namespace
125
126 } // namespace testing
127 } // namespace grpc
128
main(int argc,char ** argv)129 int main(int argc, char** argv) {
130 std::string me = argv[0];
131 auto lslash = me.rfind('/');
132 if (lslash != std::string::npos) {
133 g_root = me.substr(0, lslash);
134 } else {
135 g_root = ".";
136 }
137
138 grpc_test_init(argc, argv);
139 ::testing::InitGoogleTest(&argc, argv);
140 // Order seems to matter on these tests: run three times to eliminate that
141 for (int i = 0; i < 3; i++) {
142 if (RUN_ALL_TESTS() != 0) {
143 return 1;
144 }
145 }
146 return 0;
147 }
148