1 /* Copyright The libuv project and 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 <stdio.h>
26 #include <stdlib.h>
27 #include <string.h>
28
29 #define CHECK_OBJECT(handle, type, parent) \
30 ASSERT_PTR_EQ((type*)(handle), &(parent))
31
32 static uv_udp_t client;
33 static uv_idle_t idle_handle;
34 static uv_udp_send_t send_req;
35 static uv_buf_t buf;
36 static struct sockaddr_in addr;
37 static char send_data[1024];
38
39 static int loop_hang_called;
40
41 static void send_cb(uv_udp_send_t* req, int status);
42
43
idle_cb(uv_idle_t * handle)44 static void idle_cb(uv_idle_t* handle) {
45 int r;
46
47 ASSERT_NULL(send_req.handle);
48 CHECK_OBJECT(handle, uv_idle_t, idle_handle);
49 ASSERT_OK(uv_idle_stop(handle));
50
51 /* It probably would have stalled by now if it's going to stall at all. */
52 if (++loop_hang_called > 1000) {
53 uv_close((uv_handle_t*) &client, NULL);
54 uv_close((uv_handle_t*) &idle_handle, NULL);
55 return;
56 }
57
58 r = uv_udp_send(&send_req,
59 &client,
60 &buf,
61 1,
62 (const struct sockaddr*) &addr,
63 send_cb);
64 ASSERT_OK(r);
65 }
66
67
send_cb(uv_udp_send_t * req,int status)68 static void send_cb(uv_udp_send_t* req, int status) {
69 ASSERT_NOT_NULL(req);
70 ASSERT(status == 0 || status == UV_ENETUNREACH);
71 CHECK_OBJECT(req->handle, uv_udp_t, client);
72 CHECK_OBJECT(req, uv_udp_send_t, send_req);
73 req->handle = NULL;
74
75 ASSERT_OK(uv_idle_start(&idle_handle, idle_cb));
76 }
77
78
TEST_IMPL(udp_send_hang_loop)79 TEST_IMPL(udp_send_hang_loop) {
80 ASSERT_OK(uv_idle_init(uv_default_loop(), &idle_handle));
81
82 /* 192.0.2.0/24 is "TEST-NET" and reserved for documentation.
83 * Good for us, though. Since we want to have something unreachable.
84 */
85 ASSERT_OK(uv_ip4_addr("192.0.2.3", TEST_PORT, &addr));
86
87 ASSERT_OK(uv_udp_init(uv_default_loop(), &client));
88
89 buf = uv_buf_init(send_data, sizeof(send_data));
90
91 ASSERT_OK(uv_idle_start(&idle_handle, idle_cb));
92
93 uv_run(uv_default_loop(), UV_RUN_DEFAULT);
94
95 ASSERT_GT(loop_hang_called, 1000);
96
97 MAKE_VALGRIND_HAPPY(uv_default_loop());
98 return 0;
99 }
100
