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