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_send_cb_called; |
36 | static int cl_recv_cb_called; |
37 | |
38 | static int sv_send_cb_called; |
39 | static int sv_recv_cb_called; |
40 | |
41 | static int close_cb_called; |
42 | |
43 | |
44 | static void alloc_cb(uv_handle_t* handle, |
45 | size_t suggested_size, |
46 | uv_buf_t* buf) { |
47 | static char slab[65536]; |
48 | CHECK_HANDLE(handle); |
49 | ASSERT(suggested_size <= sizeof(slab)); |
50 | buf->base = slab; |
51 | buf->len = sizeof(slab); |
52 | } |
53 | |
54 | |
55 | static void close_cb(uv_handle_t* handle) { |
56 | CHECK_HANDLE(handle); |
57 | ASSERT(1 == uv_is_closing(handle)); |
58 | close_cb_called++; |
59 | } |
60 | |
61 | |
62 | static void cl_recv_cb(uv_udp_t* handle, |
63 | ssize_t nread, |
64 | const uv_buf_t* buf, |
65 | const struct sockaddr* addr, |
66 | unsigned flags) { |
67 | CHECK_HANDLE(handle); |
68 | ASSERT(flags == 0); |
69 | |
70 | if (nread < 0) { |
71 | ASSERT(0 && "unexpected error" ); |
72 | } |
73 | |
74 | if (nread == 0) { |
75 | /* Returning unused buffer. Don't count towards cl_recv_cb_called */ |
76 | ASSERT(addr == NULL); |
77 | return; |
78 | } |
79 | |
80 | ASSERT(addr != NULL); |
81 | ASSERT(nread == 4); |
82 | ASSERT(!memcmp("PONG" , buf->base, nread)); |
83 | |
84 | cl_recv_cb_called++; |
85 | |
86 | uv_close((uv_handle_t*) handle, close_cb); |
87 | } |
88 | |
89 | |
90 | static void cl_send_cb(uv_udp_send_t* req, int status) { |
91 | int r; |
92 | |
93 | ASSERT(req != NULL); |
94 | ASSERT(status == 0); |
95 | CHECK_HANDLE(req->handle); |
96 | |
97 | r = uv_udp_recv_start(req->handle, alloc_cb, cl_recv_cb); |
98 | ASSERT(r == 0); |
99 | |
100 | cl_send_cb_called++; |
101 | } |
102 | |
103 | |
104 | static void sv_send_cb(uv_udp_send_t* req, int status) { |
105 | ASSERT(req != NULL); |
106 | ASSERT(status == 0); |
107 | CHECK_HANDLE(req->handle); |
108 | |
109 | uv_close((uv_handle_t*) req->handle, close_cb); |
110 | free(req); |
111 | |
112 | sv_send_cb_called++; |
113 | } |
114 | |
115 | |
116 | static void sv_recv_cb(uv_udp_t* handle, |
117 | ssize_t nread, |
118 | const uv_buf_t* rcvbuf, |
119 | const struct sockaddr* addr, |
120 | unsigned flags) { |
121 | uv_udp_send_t* req; |
122 | uv_buf_t sndbuf; |
123 | int r; |
124 | |
125 | if (nread < 0) { |
126 | ASSERT(0 && "unexpected error" ); |
127 | } |
128 | |
129 | if (nread == 0) { |
130 | /* Returning unused buffer. Don't count towards sv_recv_cb_called */ |
131 | ASSERT(addr == NULL); |
132 | return; |
133 | } |
134 | |
135 | CHECK_HANDLE(handle); |
136 | ASSERT(flags == 0); |
137 | |
138 | ASSERT(addr != NULL); |
139 | ASSERT(nread == 4); |
140 | ASSERT(!memcmp("PING" , rcvbuf->base, nread)); |
141 | |
142 | /* FIXME? `uv_udp_recv_stop` does what it says: recv_cb is not called |
143 | * anymore. That's problematic because the read buffer won't be returned |
144 | * either... Not sure I like that but it's consistent with `uv_read_stop`. |
145 | */ |
146 | r = uv_udp_recv_stop(handle); |
147 | ASSERT(r == 0); |
148 | |
149 | req = malloc(sizeof *req); |
150 | ASSERT(req != NULL); |
151 | |
152 | sndbuf = uv_buf_init("PONG" , 4); |
153 | r = uv_udp_send(req, handle, &sndbuf, 1, addr, sv_send_cb); |
154 | ASSERT(r == 0); |
155 | |
156 | sv_recv_cb_called++; |
157 | } |
158 | |
159 | |
160 | TEST_IMPL(udp_send_and_recv) { |
161 | struct sockaddr_in addr; |
162 | uv_udp_send_t req; |
163 | uv_buf_t buf; |
164 | int r; |
165 | |
166 | ASSERT(0 == uv_ip4_addr("0.0.0.0" , TEST_PORT, &addr)); |
167 | |
168 | r = uv_udp_init(uv_default_loop(), &server); |
169 | ASSERT(r == 0); |
170 | |
171 | r = uv_udp_bind(&server, (const struct sockaddr*) &addr, 0); |
172 | ASSERT(r == 0); |
173 | |
174 | r = uv_udp_recv_start(&server, alloc_cb, sv_recv_cb); |
175 | ASSERT(r == 0); |
176 | |
177 | ASSERT(0 == uv_ip4_addr("127.0.0.1" , TEST_PORT, &addr)); |
178 | |
179 | r = uv_udp_init(uv_default_loop(), &client); |
180 | ASSERT(r == 0); |
181 | |
182 | /* client sends "PING", expects "PONG" */ |
183 | buf = uv_buf_init("PING" , 4); |
184 | |
185 | r = uv_udp_send(&req, |
186 | &client, |
187 | &buf, |
188 | 1, |
189 | (const struct sockaddr*) &addr, |
190 | cl_send_cb); |
191 | ASSERT(r == 0); |
192 | |
193 | ASSERT(close_cb_called == 0); |
194 | ASSERT(cl_send_cb_called == 0); |
195 | ASSERT(cl_recv_cb_called == 0); |
196 | ASSERT(sv_send_cb_called == 0); |
197 | ASSERT(sv_recv_cb_called == 0); |
198 | |
199 | uv_run(uv_default_loop(), UV_RUN_DEFAULT); |
200 | |
201 | ASSERT(cl_send_cb_called == 1); |
202 | ASSERT(cl_recv_cb_called == 1); |
203 | ASSERT(sv_send_cb_called == 1); |
204 | ASSERT(sv_recv_cb_called == 1); |
205 | ASSERT(close_cb_called == 2); |
206 | |
207 | ASSERT(client.send_queue_size == 0); |
208 | ASSERT(server.send_queue_size == 0); |
209 | |
210 | MAKE_VALGRIND_HAPPY(); |
211 | return 0; |
212 | } |
213 | |