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((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 | |
44 | static void idle_cb(uv_idle_t* handle) { |
45 | int r; |
46 | |
47 | ASSERT(send_req.handle == NULL); |
48 | CHECK_OBJECT(handle, uv_idle_t, idle_handle); |
49 | ASSERT(0 == 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(r == 0); |
65 | } |
66 | |
67 | |
68 | static void send_cb(uv_udp_send_t* req, int status) { |
69 | ASSERT(req != NULL); |
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(0 == uv_idle_start(&idle_handle, idle_cb)); |
76 | } |
77 | |
78 | |
79 | TEST_IMPL(udp_send_hang_loop) { |
80 | ASSERT(0 == uv_idle_init(uv_default_loop(), &idle_handle)); |
81 | |
82 | /* 192.0.2.0/8 is "TEST-NET" and reserved for documentation. |
83 | * Good for us, though. Since we want to have something unreachable. |
84 | */ |
85 | ASSERT(0 == uv_ip4_addr("192.0.2.3" , TEST_PORT, &addr)); |
86 | |
87 | ASSERT(0 == uv_udp_init(uv_default_loop(), &client)); |
88 | |
89 | buf = uv_buf_init(send_data, sizeof(send_data)); |
90 | |
91 | ASSERT(0 == uv_idle_start(&idle_handle, idle_cb)); |
92 | |
93 | uv_run(uv_default_loop(), UV_RUN_DEFAULT); |
94 | |
95 | ASSERT(loop_hang_called > 1000); |
96 | |
97 | MAKE_VALGRIND_HAPPY(); |
98 | return 0; |
99 | } |
100 | |