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