1 | /* Copyright Joyent, Inc. and other Node 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_HANDLE(handle) \ |
30 | ASSERT((uv_udp_t*)(handle) == &server || (uv_udp_t*)(handle) == &client) |
31 | |
32 | static uv_udp_t server; |
33 | static uv_udp_t client; |
34 | |
35 | static int cl_recv_cb_called; |
36 | |
37 | static int sv_send_cb_called; |
38 | |
39 | static int close_cb_called; |
40 | |
41 | static void alloc_cb(uv_handle_t* handle, |
42 | size_t suggested_size, |
43 | uv_buf_t* buf) { |
44 | static char slab[65536]; |
45 | CHECK_HANDLE(handle); |
46 | ASSERT(suggested_size <= sizeof(slab)); |
47 | buf->base = slab; |
48 | buf->len = sizeof(slab); |
49 | } |
50 | |
51 | |
52 | static void close_cb(uv_handle_t* handle) { |
53 | CHECK_HANDLE(handle); |
54 | close_cb_called++; |
55 | } |
56 | |
57 | |
58 | static void sv_send_cb(uv_udp_send_t* req, int status) { |
59 | ASSERT(req != NULL); |
60 | ASSERT(status == 0); |
61 | CHECK_HANDLE(req->handle); |
62 | |
63 | sv_send_cb_called++; |
64 | |
65 | uv_close((uv_handle_t*) req->handle, close_cb); |
66 | } |
67 | |
68 | |
69 | static void cl_recv_cb(uv_udp_t* handle, |
70 | ssize_t nread, |
71 | const uv_buf_t* buf, |
72 | const struct sockaddr* addr, |
73 | unsigned flags) { |
74 | CHECK_HANDLE(handle); |
75 | ASSERT(flags == 0); |
76 | |
77 | cl_recv_cb_called++; |
78 | |
79 | if (nread < 0) { |
80 | ASSERT(0 && "unexpected error" ); |
81 | } |
82 | |
83 | if (nread == 0) { |
84 | /* Returning unused buffer. Don't count towards cl_recv_cb_called */ |
85 | ASSERT(addr == NULL); |
86 | return; |
87 | } |
88 | |
89 | ASSERT(addr != NULL); |
90 | ASSERT(nread == 4); |
91 | ASSERT(!memcmp("PING" , buf->base, nread)); |
92 | |
93 | /* we are done with the client handle, we can close it */ |
94 | uv_close((uv_handle_t*) &client, close_cb); |
95 | } |
96 | |
97 | |
98 | TEST_IMPL(udp_multicast_join) { |
99 | int r; |
100 | uv_udp_send_t req; |
101 | uv_buf_t buf; |
102 | struct sockaddr_in addr; |
103 | |
104 | ASSERT(0 == uv_ip4_addr("127.0.0.1" , TEST_PORT, &addr)); |
105 | |
106 | r = uv_udp_init(uv_default_loop(), &server); |
107 | ASSERT(r == 0); |
108 | |
109 | r = uv_udp_init(uv_default_loop(), &client); |
110 | ASSERT(r == 0); |
111 | |
112 | /* bind to the desired port */ |
113 | r = uv_udp_bind(&client, (const struct sockaddr*) &addr, 0); |
114 | ASSERT(r == 0); |
115 | |
116 | /* join the multicast channel */ |
117 | r = uv_udp_set_membership(&client, "239.255.0.1" , NULL, UV_JOIN_GROUP); |
118 | if (r == UV_ENODEV) |
119 | RETURN_SKIP("No multicast support." ); |
120 | ASSERT(r == 0); |
121 | |
122 | r = uv_udp_recv_start(&client, alloc_cb, cl_recv_cb); |
123 | ASSERT(r == 0); |
124 | |
125 | buf = uv_buf_init("PING" , 4); |
126 | |
127 | /* server sends "PING" */ |
128 | r = uv_udp_send(&req, |
129 | &server, |
130 | &buf, |
131 | 1, |
132 | (const struct sockaddr*) &addr, |
133 | sv_send_cb); |
134 | ASSERT(r == 0); |
135 | |
136 | ASSERT(close_cb_called == 0); |
137 | ASSERT(cl_recv_cb_called == 0); |
138 | ASSERT(sv_send_cb_called == 0); |
139 | |
140 | /* run the loop till all events are processed */ |
141 | uv_run(uv_default_loop(), UV_RUN_DEFAULT); |
142 | |
143 | ASSERT(cl_recv_cb_called == 1); |
144 | ASSERT(sv_send_cb_called == 1); |
145 | ASSERT(close_cb_called == 2); |
146 | |
147 | MAKE_VALGRIND_HAPPY(); |
148 | return 0; |
149 | } |
150 | |