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 #include "uv.h"
23 #include "task.h"
24
25 #include <errno.h>
26 #include <string.h> /* memset */
27
28 #ifdef _WIN32
29 # define INVALID_FD (INVALID_HANDLE_VALUE)
30 #else
31 # define INVALID_FD (-1)
32 #endif
33
34 static uv_loop_t* loop;
35 static uv_tcp_t tcp_server;
36 static uv_tcp_t tcp_client;
37 static uv_tcp_t tcp_accepted;
38 static uv_connect_t connect_req;
39 static uv_shutdown_t shutdown_req;
40 static uv_write_t write_reqs[4];
41
42 static int client_close;
43 static int shutdown_before_close;
44
45 static int write_cb_called;
46 static int close_cb_called;
47 static int shutdown_cb_called;
48
49 static void connect_cb(uv_connect_t* req, int status);
50 static void write_cb(uv_write_t* req, int status);
51 static void close_cb(uv_handle_t* handle);
52 static void shutdown_cb(uv_shutdown_t* req, int status);
53
54 static int read_size;
55
56
do_write(uv_tcp_t * handle)57 static void do_write(uv_tcp_t* handle) {
58 uv_buf_t buf;
59 unsigned i;
60 int r;
61
62 buf = uv_buf_init("PING", 4);
63 for (i = 0; i < ARRAY_SIZE(write_reqs); i++) {
64 r = uv_write(&write_reqs[i], (uv_stream_t*) handle, &buf, 1, write_cb);
65 ASSERT_OK(r);
66 }
67 }
68
69
do_close(uv_tcp_t * handle)70 static void do_close(uv_tcp_t* handle) {
71 uv_os_fd_t fd;
72 int r;
73
74 if (shutdown_before_close == 1) {
75 ASSERT_OK(uv_shutdown(&shutdown_req,
76 (uv_stream_t*) handle,
77 shutdown_cb));
78 ASSERT_EQ(UV_EINVAL, uv_tcp_close_reset(handle, close_cb));
79 } else if (shutdown_before_close == 2) {
80 r = uv_fileno((const uv_handle_t*) handle, &fd);
81 ASSERT_OK(r);
82 #ifdef _WIN32
83 ASSERT_PTR_NE(fd, INVALID_FD);
84 ASSERT_OK(shutdown((SOCKET)fd, SD_BOTH));
85 #else
86 ASSERT_NE(fd, INVALID_FD);
87 ASSERT_OK(shutdown(fd, SHUT_RDWR));
88 #endif
89 ASSERT_OK(uv_tcp_close_reset(handle, close_cb));
90 } else {
91 ASSERT_OK(uv_tcp_close_reset(handle, close_cb));
92 ASSERT_EQ(UV_ENOTCONN, uv_shutdown(&shutdown_req, (uv_stream_t*) handle,
93 shutdown_cb));
94 }
95
96 uv_close((uv_handle_t*) &tcp_server, NULL);
97 }
98
alloc_cb(uv_handle_t * handle,size_t size,uv_buf_t * buf)99 static void alloc_cb(uv_handle_t* handle, size_t size, uv_buf_t* buf) {
100 static char slab[1024];
101 buf->base = slab;
102 buf->len = sizeof(slab);
103 }
104
read_cb2(uv_stream_t * stream,ssize_t nread,const uv_buf_t * buf)105 static void read_cb2(uv_stream_t* stream, ssize_t nread, const uv_buf_t* buf) {
106 ASSERT_PTR_EQ((uv_tcp_t*)stream, &tcp_client);
107 if (nread == UV_EOF)
108 uv_close((uv_handle_t*) stream, NULL);
109 }
110
111
connect_cb(uv_connect_t * conn_req,int status)112 static void connect_cb(uv_connect_t* conn_req, int status) {
113 ASSERT_PTR_EQ(conn_req, &connect_req);
114 uv_read_start((uv_stream_t*) &tcp_client, alloc_cb, read_cb2);
115 do_write(&tcp_client);
116 if (client_close)
117 do_close(&tcp_client);
118 }
119
120
write_cb(uv_write_t * req,int status)121 static void write_cb(uv_write_t* req, int status) {
122 /* write callbacks should run before the close callback */
123 ASSERT_OK(close_cb_called);
124 ASSERT_PTR_EQ(req->handle, (uv_stream_t*)&tcp_client);
125 write_cb_called++;
126 }
127
128
close_cb(uv_handle_t * handle)129 static void close_cb(uv_handle_t* handle) {
130 if (client_close)
131 ASSERT_PTR_EQ(handle, (uv_handle_t*) &tcp_client);
132 else
133 ASSERT_PTR_EQ(handle, (uv_handle_t*) &tcp_accepted);
134
135 close_cb_called++;
136 }
137
shutdown_cb(uv_shutdown_t * req,int status)138 static void shutdown_cb(uv_shutdown_t* req, int status) {
139 if (client_close)
140 ASSERT_PTR_EQ(req->handle, (uv_stream_t*) &tcp_client);
141 else
142 ASSERT_PTR_EQ(req->handle, (uv_stream_t*) &tcp_accepted);
143
144 shutdown_cb_called++;
145 }
146
147
read_cb(uv_stream_t * stream,ssize_t nread,const uv_buf_t * buf)148 static void read_cb(uv_stream_t* stream, ssize_t nread, const uv_buf_t* buf) {
149 ASSERT_PTR_EQ((uv_tcp_t*)stream, &tcp_accepted);
150 if (nread < 0) {
151 uv_close((uv_handle_t*) stream, NULL);
152 } else {
153 read_size += nread;
154 if (read_size == 16 && client_close == 0)
155 do_close(&tcp_accepted);
156 }
157 }
158
159
connection_cb(uv_stream_t * server,int status)160 static void connection_cb(uv_stream_t* server, int status) {
161 ASSERT_OK(status);
162
163 ASSERT_OK(uv_tcp_init(loop, &tcp_accepted));
164 ASSERT_OK(uv_accept(server, (uv_stream_t*) &tcp_accepted));
165
166 uv_read_start((uv_stream_t*) &tcp_accepted, alloc_cb, read_cb);
167 }
168
169
start_server(uv_loop_t * loop,uv_tcp_t * handle)170 static void start_server(uv_loop_t* loop, uv_tcp_t* handle) {
171 struct sockaddr_in addr;
172 int r;
173
174 ASSERT_OK(uv_ip4_addr("127.0.0.1", TEST_PORT, &addr));
175
176 r = uv_tcp_init(loop, handle);
177 ASSERT_OK(r);
178
179 r = uv_tcp_bind(handle, (const struct sockaddr*) &addr, 0);
180 ASSERT_OK(r);
181
182 r = uv_listen((uv_stream_t*)handle, 128, connection_cb);
183 ASSERT_OK(r);
184 }
185
186
do_connect(uv_loop_t * loop,uv_tcp_t * tcp_client)187 static void do_connect(uv_loop_t* loop, uv_tcp_t* tcp_client) {
188 struct sockaddr_in addr;
189 int r;
190
191 ASSERT_OK(uv_ip4_addr("127.0.0.1", TEST_PORT, &addr));
192
193 r = uv_tcp_init(loop, tcp_client);
194 ASSERT_OK(r);
195
196 r = uv_tcp_connect(&connect_req,
197 tcp_client,
198 (const struct sockaddr*) &addr,
199 connect_cb);
200 ASSERT_OK(r);
201 }
202
203
204 /* Check that pending write requests have their callbacks
205 * invoked when the handle is closed.
206 */
TEST_IMPL(tcp_close_reset_client)207 TEST_IMPL(tcp_close_reset_client) {
208 int r;
209
210 loop = uv_default_loop();
211
212 start_server(loop, &tcp_server);
213
214 client_close = 1;
215 shutdown_before_close = 0;
216
217 do_connect(loop, &tcp_client);
218
219 ASSERT_OK(write_cb_called);
220 ASSERT_OK(close_cb_called);
221 ASSERT_OK(shutdown_cb_called);
222
223 r = uv_run(loop, UV_RUN_DEFAULT);
224 ASSERT_OK(r);
225
226 ASSERT_EQ(4, write_cb_called);
227 ASSERT_EQ(1, close_cb_called);
228 ASSERT_OK(shutdown_cb_called);
229
230 MAKE_VALGRIND_HAPPY(loop);
231 return 0;
232 }
233
TEST_IMPL(tcp_close_reset_client_after_shutdown)234 TEST_IMPL(tcp_close_reset_client_after_shutdown) {
235 int r;
236
237 loop = uv_default_loop();
238
239 start_server(loop, &tcp_server);
240
241 client_close = 1;
242 shutdown_before_close = 1;
243
244 do_connect(loop, &tcp_client);
245
246 ASSERT_OK(write_cb_called);
247 ASSERT_OK(close_cb_called);
248 ASSERT_OK(shutdown_cb_called);
249
250 r = uv_run(loop, UV_RUN_DEFAULT);
251 ASSERT_OK(r);
252
253 ASSERT_EQ(4, write_cb_called);
254 ASSERT_OK(close_cb_called);
255 ASSERT_EQ(1, shutdown_cb_called);
256
257 MAKE_VALGRIND_HAPPY(loop);
258 return 0;
259 }
260
TEST_IMPL(tcp_close_reset_accepted)261 TEST_IMPL(tcp_close_reset_accepted) {
262 int r;
263
264 loop = uv_default_loop();
265
266 start_server(loop, &tcp_server);
267
268 client_close = 0;
269 shutdown_before_close = 0;
270
271 do_connect(loop, &tcp_client);
272
273 ASSERT_OK(write_cb_called);
274 ASSERT_OK(close_cb_called);
275 ASSERT_OK(shutdown_cb_called);
276
277 r = uv_run(loop, UV_RUN_DEFAULT);
278 ASSERT_OK(r);
279
280 ASSERT_EQ(4, write_cb_called);
281 ASSERT_EQ(1, close_cb_called);
282 ASSERT_OK(shutdown_cb_called);
283
284 MAKE_VALGRIND_HAPPY(loop);
285 return 0;
286 }
287
TEST_IMPL(tcp_close_reset_accepted_after_shutdown)288 TEST_IMPL(tcp_close_reset_accepted_after_shutdown) {
289 int r;
290
291 loop = uv_default_loop();
292
293 start_server(loop, &tcp_server);
294
295 client_close = 0;
296 shutdown_before_close = 1;
297
298 do_connect(loop, &tcp_client);
299
300 ASSERT_OK(write_cb_called);
301 ASSERT_OK(close_cb_called);
302 ASSERT_OK(shutdown_cb_called);
303
304 r = uv_run(loop, UV_RUN_DEFAULT);
305 ASSERT_OK(r);
306
307 ASSERT_EQ(4, write_cb_called);
308 ASSERT_OK(close_cb_called);
309 ASSERT_EQ(1, shutdown_cb_called);
310
311 MAKE_VALGRIND_HAPPY(loop);
312 return 0;
313 }
314
TEST_IMPL(tcp_close_reset_accepted_after_socket_shutdown)315 TEST_IMPL(tcp_close_reset_accepted_after_socket_shutdown) {
316 int r;
317
318 loop = uv_default_loop();
319
320 start_server(loop, &tcp_server);
321
322 client_close = 0;
323 shutdown_before_close = 2;
324
325 do_connect(loop, &tcp_client);
326
327 ASSERT_OK(write_cb_called);
328 ASSERT_OK(close_cb_called);
329 ASSERT_OK(shutdown_cb_called);
330
331 r = uv_run(loop, UV_RUN_DEFAULT);
332 ASSERT_OK(r);
333
334 ASSERT_EQ(4, write_cb_called);
335 ASSERT_EQ(1, close_cb_called);
336 ASSERT_OK(shutdown_cb_called);
337
338 MAKE_VALGRIND_HAPPY(loop);
339 return 0;
340 }
341
