1 //
2 //
3 // Copyright 2017 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 <memory>
20
21 #include "absl/strings/string_view.h"
22 #include "gtest/gtest.h"
23
24 #include <grpc/impl/channel_arg_names.h>
25 #include <grpc/status.h>
26
27 #include "src/core/ext/transport/chttp2/transport/internal.h"
28 #include "src/core/lib/channel/channel_args.h"
29 #include "src/core/lib/config/config_vars.h"
30 #include "src/core/lib/gprpp/time.h"
31 #include "src/core/lib/iomgr/port.h"
32 #include "test/core/end2end/end2end_tests.h"
33
34 namespace grpc_core {
35 namespace {
36
37 // Client sends a request, then waits for the keepalive watchdog timeouts before
38 // returning status.
CORE_END2END_TEST(Http2SingleHopTest,KeepaliveTimeout)39 CORE_END2END_TEST(Http2SingleHopTest, KeepaliveTimeout) {
40 // Disable ping ack to trigger the keepalive timeout
41 InitServer(ChannelArgs().Set("grpc.http2.ack_pings", false));
42 InitClient(ChannelArgs()
43 .Set(GRPC_ARG_KEEPALIVE_TIME_MS, 10)
44 .Set(GRPC_ARG_KEEPALIVE_TIMEOUT_MS, 0)
45 .Set(GRPC_ARG_PING_TIMEOUT_MS, 0)
46 .Set(GRPC_ARG_HTTP2_BDP_PROBE, false));
47 auto c = NewClientCall("/foo").Timeout(Duration::Minutes(1)).Create();
48 IncomingMetadata server_initial_metadata;
49 IncomingStatusOnClient server_status;
50 c.NewBatch(1)
51 .SendInitialMetadata({})
52 .SendCloseFromClient()
53 .RecvInitialMetadata(server_initial_metadata)
54 .RecvStatusOnClient(server_status);
55 Expect(1, true);
56 Step();
57 EXPECT_EQ(server_status.status(), GRPC_STATUS_UNAVAILABLE);
58 EXPECT_EQ(server_status.message(), "ping timeout");
59 }
60
61 // Verify that reads reset the keepalive ping timer. The client sends 30 pings
62 // with a sleep of 10ms in between. It has a configured keepalive timer of
63 // 200ms. In the success case, each ping ack should reset the keepalive timer so
64 // that the keepalive ping is never sent.
CORE_END2END_TEST(Http2SingleHopTest,ReadDelaysKeepalive)65 CORE_END2END_TEST(Http2SingleHopTest, ReadDelaysKeepalive) {
66 #ifdef GRPC_POSIX_SOCKET
67 // It is hard to get the timing right for the polling engine poll.
68 if (ConfigVars::Get().PollStrategy() == "poll") {
69 GTEST_SKIP() << "Skipping test under poll poller";
70 }
71 #endif // GRPC_POSIX_SOCKET
72 const auto kPingInterval = Duration::Milliseconds(100);
73 // Disable ping ack to trigger the keepalive timeout
74 InitServer(ChannelArgs().Set("grpc.http2.ack_pings", false));
75 InitClient(ChannelArgs()
76 .Set(GRPC_ARG_KEEPALIVE_TIME_MS, (20 * kPingInterval).millis())
77 .Set(GRPC_ARG_KEEPALIVE_TIMEOUT_MS, 0)
78 .Set(GRPC_ARG_HTTP2_BDP_PROBE, false));
79 auto c = NewClientCall("/foo").Timeout(Duration::Seconds(60)).Create();
80 IncomingMetadata server_initial_metadata;
81 IncomingStatusOnClient server_status;
82 c.NewBatch(1)
83 .SendInitialMetadata({})
84 .RecvInitialMetadata(server_initial_metadata)
85 .RecvStatusOnClient(server_status);
86 auto s = RequestCall(100);
87 Expect(100, true);
88 Step();
89 IncomingCloseOnServer client_close;
90 s.NewBatch(101).SendInitialMetadata({}).RecvCloseOnServer(client_close);
91 for (int i = 0; i < 30; i++) {
92 IncomingMessage server_message;
93 IncomingMessage client_message;
94 c.NewBatch(2).SendMessage("hello world").RecvMessage(server_message);
95 s.NewBatch(102).RecvMessage(client_message);
96 Expect(102, true);
97 Step();
98 s.NewBatch(103).SendMessage("hello you");
99 Expect(103, true);
100 Expect(2, true);
101 Step();
102 // Sleep for a short interval to check if the client sends any pings
103 Step(kPingInterval);
104 }
105 c.NewBatch(3).SendCloseFromClient();
106 s.NewBatch(104).SendStatusFromServer(GRPC_STATUS_UNIMPLEMENTED, "xyz", {});
107 Expect(1, true);
108 Expect(3, true);
109 Expect(101, true);
110 Expect(104, true);
111 Step();
112 }
113
114 } // namespace
115 } // namespace grpc_core
116