1 /* Copyright libuv project contributors. All rights reserved.
2 *
3 * Permission is hereby granted, free of charge, to any person obtaining a copy
4 * of this software and associated documentation files (the "Software"), to
5 * deal in the Software without restriction, including without limitation the
6 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
7 * sell copies of the Software, and to permit persons to whom the Software is
8 * furnished to do so, subject to the following conditions:
9 *
10 * The above copyright notice and this permission notice shall be included in
11 * all copies or substantial portions of the Software.
12 *
13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
16 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
17 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
18 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
19 * IN THE SOFTWARE.
20 */
21
22 #if !defined(_WIN32)
23
24 #include "uv.h"
25 #include "task.h"
26
27 #include <errno.h>
28 #include <sys/socket.h>
29 #include <sys/ioctl.h>
30 #include <unistd.h>
31 #include <string.h>
32
33 static uv_tcp_t server_handle;
34 static uv_tcp_t client_handle;
35 static uv_tcp_t peer_handle;
36 static uv_poll_t poll_req[2];
37 static uv_idle_t idle;
38 static uv_os_fd_t client_fd;
39 static uv_os_fd_t server_fd;
40 static int ticks;
41 static const int kMaxTicks = 10;
42 static int cli_pr_check = 0;
43 static int cli_rd_check = 0;
44 static int srv_rd_check = 0;
45
got_eagain(void)46 static int got_eagain(void) {
47 return errno == EAGAIN
48 || errno == EINPROGRESS
49 #ifdef EWOULDBLOCK
50 || errno == EWOULDBLOCK
51 #endif
52 ;
53 }
54
idle_cb(uv_idle_t * idle)55 static void idle_cb(uv_idle_t* idle) {
56 uv_sleep(100);
57 if (++ticks < kMaxTicks)
58 return;
59
60 uv_poll_stop(&poll_req[0]);
61 uv_poll_stop(&poll_req[1]);
62 uv_close((uv_handle_t*) &server_handle, NULL);
63 uv_close((uv_handle_t*) &client_handle, NULL);
64 uv_close((uv_handle_t*) &peer_handle, NULL);
65 uv_close((uv_handle_t*) idle, NULL);
66 }
67
poll_cb(uv_poll_t * handle,int status,int events)68 static void poll_cb(uv_poll_t* handle, int status, int events) {
69 char buffer[5];
70 int n;
71 int fd;
72
73 ASSERT_OK(uv_fileno((uv_handle_t*)handle, &fd));
74 memset(buffer, 0, 5);
75
76 if (events & UV_PRIORITIZED) {
77 do
78 n = recv(client_fd, &buffer, 5, MSG_OOB);
79 while (n == -1 && errno == EINTR);
80 ASSERT(n >= 0 || errno != EINVAL);
81 cli_pr_check = 1;
82 ASSERT_OK(uv_poll_stop(&poll_req[0]));
83 ASSERT_OK(uv_poll_start(&poll_req[0],
84 UV_READABLE | UV_WRITABLE,
85 poll_cb));
86 }
87 if (events & UV_READABLE) {
88 if (fd == client_fd) {
89 do
90 n = recv(client_fd, &buffer, 5, 0);
91 while (n == -1 && errno == EINTR);
92 ASSERT(n >= 0 || errno != EINVAL);
93 if (cli_rd_check == 1) {
94 ASSERT_OK(strncmp(buffer, "world", n));
95 ASSERT_EQ(5, n);
96 cli_rd_check = 2;
97 }
98 if (cli_rd_check == 0) {
99 ASSERT_EQ(4, n);
100 ASSERT_OK(strncmp(buffer, "hello", n));
101 cli_rd_check = 1;
102 do {
103 do
104 n = recv(server_fd, &buffer, 5, 0);
105 while (n == -1 && errno == EINTR);
106 if (n > 0) {
107 ASSERT_EQ(5, n);
108 ASSERT_OK(strncmp(buffer, "world", n));
109 cli_rd_check = 2;
110 }
111 } while (n > 0);
112
113 ASSERT(got_eagain());
114 }
115 }
116 if (fd == server_fd) {
117 do
118 n = recv(server_fd, &buffer, 3, 0);
119 while (n == -1 && errno == EINTR);
120 ASSERT(n >= 0 || errno != EINVAL);
121 ASSERT_EQ(3, n);
122 ASSERT_OK(strncmp(buffer, "foo", n));
123 srv_rd_check = 1;
124 uv_poll_stop(&poll_req[1]);
125 }
126 }
127 if (events & UV_WRITABLE) {
128 do {
129 n = send(client_fd, "foo", 3, 0);
130 } while (n < 0 && errno == EINTR);
131 ASSERT_EQ(3, n);
132 }
133 }
134
connection_cb(uv_stream_t * handle,int status)135 static void connection_cb(uv_stream_t* handle, int status) {
136 int r;
137
138 ASSERT_OK(status);
139 ASSERT_OK(uv_accept(handle, (uv_stream_t*) &peer_handle));
140 ASSERT_OK(uv_fileno((uv_handle_t*) &peer_handle, &server_fd));
141 ASSERT_OK(uv_poll_init_socket(uv_default_loop(),
142 &poll_req[0],
143 client_fd));
144 ASSERT_OK(uv_poll_init_socket(uv_default_loop(),
145 &poll_req[1],
146 server_fd));
147 ASSERT_OK(uv_poll_start(&poll_req[0],
148 UV_PRIORITIZED | UV_READABLE | UV_WRITABLE,
149 poll_cb));
150 ASSERT_OK(uv_poll_start(&poll_req[1],
151 UV_READABLE,
152 poll_cb));
153 do {
154 r = send(server_fd, "hello", 5, MSG_OOB);
155 } while (r < 0 && errno == EINTR);
156 ASSERT_EQ(5, r);
157
158 do {
159 r = send(server_fd, "world", 5, 0);
160 } while (r < 0 && errno == EINTR);
161 ASSERT_EQ(5, r);
162
163 ASSERT_OK(uv_idle_start(&idle, idle_cb));
164 }
165
166
TEST_IMPL(poll_oob)167 TEST_IMPL(poll_oob) {
168 struct sockaddr_in addr;
169 int r = 0;
170 uv_loop_t* loop;
171
172 ASSERT_OK(uv_ip4_addr("127.0.0.1", TEST_PORT, &addr));
173 loop = uv_default_loop();
174
175 ASSERT_OK(uv_tcp_init(loop, &server_handle));
176 ASSERT_OK(uv_tcp_init(loop, &client_handle));
177 ASSERT_OK(uv_tcp_init(loop, &peer_handle));
178 ASSERT_OK(uv_idle_init(loop, &idle));
179 ASSERT_OK(uv_tcp_bind(&server_handle, (const struct sockaddr*) &addr, 0));
180 ASSERT_OK(uv_listen((uv_stream_t*) &server_handle, 1, connection_cb));
181
182 /* Ensure two separate packets */
183 ASSERT_OK(uv_tcp_nodelay(&client_handle, 1));
184
185 client_fd = socket(PF_INET, SOCK_STREAM, 0);
186 ASSERT_GE(client_fd, 0);
187 do {
188 errno = 0;
189 r = connect(client_fd, (const struct sockaddr*)&addr, sizeof(addr));
190 } while (r == -1 && errno == EINTR);
191 ASSERT_OK(r);
192
193 ASSERT_OK(uv_run(loop, UV_RUN_DEFAULT));
194
195 ASSERT_EQ(ticks, kMaxTicks);
196
197 /* Did client receive the POLLPRI message */
198 ASSERT_EQ(1, cli_pr_check);
199 /* Did client receive the POLLIN message */
200 ASSERT_EQ(2, cli_rd_check);
201 /* Could we write with POLLOUT and did the server receive our POLLOUT message
202 * through POLLIN.
203 */
204 ASSERT_EQ(1, srv_rd_check);
205
206 MAKE_VALGRIND_HAPPY(loop);
207 return 0;
208 }
209
210 #else
211
212 typedef int file_has_no_tests; /* ISO C forbids an empty translation unit. */
213
214 #endif
215
