1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
|
// Copyright 2020 The gVisor Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include <poll.h>
#include <stdio.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <array>
#include <string>
#include "gtest/gtest.h"
#include "absl/strings/string_view.h"
#include "test/syscalls/linux/ip_socket_test_util.h"
#include "test/syscalls/linux/socket_test_util.h"
#include "test/util/test_util.h"
#include "test/util/thread_util.h"
namespace gvisor {
namespace testing {
// Test fixture for tests that apply to pairs of connected sockets.
using ConnectStressTest = SocketPairTest;
TEST_P(ConnectStressTest, Reset65kTimes) {
// TODO(b/165912341): These are too slow on KVM platform with nested virt.
SKIP_IF(GvisorPlatform() == Platform::kKVM);
for (int i = 0; i < 1 << 16; ++i) {
auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair());
// Send some data to ensure that the connection gets reset and the port gets
// released immediately. This avoids either end entering TIME-WAIT.
char sent_data[100] = {};
ASSERT_THAT(write(sockets->first_fd(), sent_data, sizeof(sent_data)),
SyscallSucceedsWithValue(sizeof(sent_data)));
// Poll the other FD to make sure that the data is in the receive buffer
// before closing it to ensure a RST is triggered.
const int kTimeout = 10000;
struct pollfd pfd = {
.fd = sockets->second_fd(),
.events = POLL_IN,
};
ASSERT_THAT(poll(&pfd, 1, kTimeout), SyscallSucceedsWithValue(1));
}
}
INSTANTIATE_TEST_SUITE_P(
AllConnectedSockets, ConnectStressTest,
::testing::Values(IPv6UDPBidirectionalBindSocketPair(0),
IPv4UDPBidirectionalBindSocketPair(0),
DualStackUDPBidirectionalBindSocketPair(0),
// Without REUSEADDR, we get port exhaustion on Linux.
SetSockOpt(SOL_SOCKET, SO_REUSEADDR,
&kSockOptOn)(IPv6TCPAcceptBindSocketPair(0)),
SetSockOpt(SOL_SOCKET, SO_REUSEADDR,
&kSockOptOn)(IPv4TCPAcceptBindSocketPair(0)),
SetSockOpt(SOL_SOCKET, SO_REUSEADDR, &kSockOptOn)(
DualStackTCPAcceptBindSocketPair(0))));
// Test fixture for tests that apply to pairs of connected sockets created with
// a persistent listener (if applicable).
using PersistentListenerConnectStressTest = SocketPairTest;
TEST_P(PersistentListenerConnectStressTest, 65kTimesShutdownCloseFirst) {
// TODO(b/165912341): These are too slow on KVM platform with nested virt.
SKIP_IF(GvisorPlatform() == Platform::kKVM);
for (int i = 0; i < 1 << 16; ++i) {
auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair());
ASSERT_THAT(shutdown(sockets->first_fd(), SHUT_RDWR), SyscallSucceeds());
if (GetParam().type == SOCK_STREAM) {
// Poll the other FD to make sure that we see the FIN from the other
// side before closing the second_fd. This ensures that the first_fd
// enters TIME-WAIT and not second_fd.
const int kTimeout = 10000;
struct pollfd pfd = {
.fd = sockets->second_fd(),
.events = POLL_IN,
};
ASSERT_THAT(poll(&pfd, 1, kTimeout), SyscallSucceedsWithValue(1));
}
ASSERT_THAT(shutdown(sockets->second_fd(), SHUT_RDWR), SyscallSucceeds());
}
}
TEST_P(PersistentListenerConnectStressTest, 65kTimesShutdownCloseSecond) {
// TODO(b/165912341): These are too slow on KVM platform with nested virt.
SKIP_IF(GvisorPlatform() == Platform::kKVM);
for (int i = 0; i < 1 << 16; ++i) {
auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair());
ASSERT_THAT(shutdown(sockets->second_fd(), SHUT_RDWR), SyscallSucceeds());
if (GetParam().type == SOCK_STREAM) {
// Poll the other FD to make sure that we see the FIN from the other
// side before closing the first_fd. This ensures that the second_fd
// enters TIME-WAIT and not first_fd.
const int kTimeout = 10000;
struct pollfd pfd = {
.fd = sockets->first_fd(),
.events = POLL_IN,
};
ASSERT_THAT(poll(&pfd, 1, kTimeout), SyscallSucceedsWithValue(1));
}
ASSERT_THAT(shutdown(sockets->first_fd(), SHUT_RDWR), SyscallSucceeds());
}
}
TEST_P(PersistentListenerConnectStressTest, 65kTimesClose) {
// TODO(b/165912341): These are too slow on KVM platform with nested virt.
SKIP_IF(GvisorPlatform() == Platform::kKVM);
for (int i = 0; i < 1 << 16; ++i) {
auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair());
}
}
INSTANTIATE_TEST_SUITE_P(
AllConnectedSockets, PersistentListenerConnectStressTest,
::testing::Values(
IPv6UDPBidirectionalBindSocketPair(0),
IPv4UDPBidirectionalBindSocketPair(0),
DualStackUDPBidirectionalBindSocketPair(0),
// Without REUSEADDR, we get port exhaustion on Linux.
SetSockOpt(SOL_SOCKET, SO_REUSEADDR, &kSockOptOn)(
IPv6TCPAcceptBindPersistentListenerSocketPair(0)),
SetSockOpt(SOL_SOCKET, SO_REUSEADDR, &kSockOptOn)(
IPv4TCPAcceptBindPersistentListenerSocketPair(0)),
SetSockOpt(SOL_SOCKET, SO_REUSEADDR, &kSockOptOn)(
DualStackTCPAcceptBindPersistentListenerSocketPair(0))));
using DataTransferStressTest = SocketPairTest;
TEST_P(DataTransferStressTest, BigDataTransfer) {
// TODO(b/165912341): These are too slow on KVM platform with nested virt.
SKIP_IF(GvisorPlatform() == Platform::kKVM);
auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair());
int client_fd = sockets->first_fd();
int server_fd = sockets->second_fd();
ScopedThread echo([server_fd]() {
std::array<uint8_t, 1024> buf;
for (;;) {
ssize_t r = read(server_fd, buf.data(), buf.size());
ASSERT_THAT(r, SyscallSucceeds());
if (r == 0) {
break;
}
for (size_t i = 0; i < r;) {
ssize_t w = write(server_fd, buf.data() + i, r - i);
ASSERT_GE(w, 0);
i += w;
}
}
ASSERT_THAT(shutdown(server_fd, SHUT_WR), SyscallSucceeds());
});
const std::string chunk = "Though this upload be but little, it is fierce.";
std::string big_string;
while (big_string.size() < 31 << 20) {
big_string += chunk;
}
absl::string_view data = big_string;
ScopedThread writer([client_fd, data]() {
absl::string_view view = data;
while (!view.empty()) {
ssize_t n = write(client_fd, view.data(), view.size());
ASSERT_GE(n, 0);
view = view.substr(n);
}
ASSERT_THAT(shutdown(client_fd, SHUT_WR), SyscallSucceeds());
});
std::string buf;
buf.resize(1 << 20);
while (!data.empty()) {
ssize_t n = read(client_fd, buf.data(), buf.size());
ASSERT_GE(n, 0);
for (size_t i = 0; i < n; i += chunk.size()) {
size_t c = std::min(chunk.size(), n - i);
ASSERT_EQ(buf.substr(i, c), data.substr(i, c)) << "offset " << i;
}
data = data.substr(n);
}
// Should read EOF now.
ASSERT_THAT(read(client_fd, buf.data(), buf.size()),
SyscallSucceedsWithValue(0));
}
INSTANTIATE_TEST_SUITE_P(
AllConnectedSockets, DataTransferStressTest,
::testing::Values(IPv6TCPAcceptBindPersistentListenerSocketPair(0),
IPv4TCPAcceptBindPersistentListenerSocketPair(0),
DualStackTCPAcceptBindPersistentListenerSocketPair(0)));
} // namespace testing
} // namespace gvisor
|
