1 /* Copyright libuv project 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_NE((uv_udp_t*)(handle) == &server || (uv_udp_t*)(handle) == &client, 0)
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
sv_alloc_cb(uv_handle_t * handle,size_t suggested_size,uv_buf_t * buf)44 static void sv_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 buf->base = slab;
50 buf->len = sizeof(slab);
51 }
52
53
cl_alloc_cb(uv_handle_t * handle,size_t suggested_size,uv_buf_t * buf)54 static void cl_alloc_cb(uv_handle_t* handle,
55 size_t suggested_size,
56 uv_buf_t* buf) {
57 /* Do nothing, recv_cb should be called with UV_ENOBUFS. */
58 }
59
60
close_cb(uv_handle_t * handle)61 static void close_cb(uv_handle_t* handle) {
62 CHECK_HANDLE(handle);
63 ASSERT_EQ(1, uv_is_closing(handle));
64 close_cb_called++;
65 }
66
67
cl_recv_cb(uv_udp_t * handle,ssize_t nread,const uv_buf_t * buf,const struct sockaddr * addr,unsigned flags)68 static void cl_recv_cb(uv_udp_t* handle,
69 ssize_t nread,
70 const uv_buf_t* buf,
71 const struct sockaddr* addr,
72 unsigned flags) {
73 CHECK_HANDLE(handle);
74 ASSERT_OK(flags);
75 ASSERT_EQ(nread, UV_ENOBUFS);
76
77 cl_recv_cb_called++;
78
79 uv_close((uv_handle_t*) handle, close_cb);
80 }
81
82
cl_send_cb(uv_udp_send_t * req,int status)83 static void cl_send_cb(uv_udp_send_t* req, int status) {
84 int r;
85
86 ASSERT_NOT_NULL(req);
87 ASSERT_OK(status);
88 CHECK_HANDLE(req->handle);
89
90 r = uv_udp_recv_start(req->handle, cl_alloc_cb, cl_recv_cb);
91 ASSERT_OK(r);
92
93 cl_send_cb_called++;
94 }
95
96
sv_send_cb(uv_udp_send_t * req,int status)97 static void sv_send_cb(uv_udp_send_t* req, int status) {
98 ASSERT_NOT_NULL(req);
99 ASSERT_OK(status);
100 CHECK_HANDLE(req->handle);
101
102 uv_close((uv_handle_t*) req->handle, close_cb);
103 free(req);
104
105 sv_send_cb_called++;
106 }
107
108
sv_recv_cb(uv_udp_t * handle,ssize_t nread,const uv_buf_t * rcvbuf,const struct sockaddr * addr,unsigned flags)109 static void sv_recv_cb(uv_udp_t* handle,
110 ssize_t nread,
111 const uv_buf_t* rcvbuf,
112 const struct sockaddr* addr,
113 unsigned flags) {
114 uv_udp_send_t* req;
115 uv_buf_t sndbuf;
116 int r;
117
118 if (nread < 0) {
119 ASSERT(0 && "unexpected error");
120 }
121
122 if (nread == 0) {
123 /* Returning unused buffer. Don't count towards sv_recv_cb_called */
124 ASSERT_NULL(addr);
125 return;
126 }
127
128 CHECK_HANDLE(handle);
129 ASSERT_OK(flags);
130
131 ASSERT_NOT_NULL(addr);
132 ASSERT_EQ(4, nread);
133 ASSERT(!memcmp("PING", rcvbuf->base, nread));
134
135 r = uv_udp_recv_stop(handle);
136 ASSERT_OK(r);
137
138 req = malloc(sizeof *req);
139 ASSERT_NOT_NULL(req);
140
141 sndbuf = uv_buf_init("PONG", 4);
142 r = uv_udp_send(req, handle, &sndbuf, 1, addr, sv_send_cb);
143 ASSERT_OK(r);
144
145 sv_recv_cb_called++;
146 }
147
148
TEST_IMPL(udp_alloc_cb_fail)149 TEST_IMPL(udp_alloc_cb_fail) {
150 struct sockaddr_in addr;
151 uv_udp_send_t req;
152 uv_buf_t buf;
153 int r;
154
155 ASSERT_OK(uv_ip4_addr("0.0.0.0", TEST_PORT, &addr));
156
157 r = uv_udp_init(uv_default_loop(), &server);
158 ASSERT_OK(r);
159
160 r = uv_udp_bind(&server, (const struct sockaddr*) &addr, 0);
161 ASSERT_OK(r);
162
163 r = uv_udp_recv_start(&server, sv_alloc_cb, sv_recv_cb);
164 ASSERT_OK(r);
165
166 ASSERT_OK(uv_ip4_addr("127.0.0.1", TEST_PORT, &addr));
167
168 r = uv_udp_init(uv_default_loop(), &client);
169 ASSERT_OK(r);
170
171 buf = uv_buf_init("PING", 4);
172 r = uv_udp_send(&req,
173 &client,
174 &buf,
175 1,
176 (const struct sockaddr*) &addr,
177 cl_send_cb);
178 ASSERT_OK(r);
179
180 ASSERT_OK(close_cb_called);
181 ASSERT_OK(cl_send_cb_called);
182 ASSERT_OK(cl_recv_cb_called);
183 ASSERT_OK(sv_send_cb_called);
184 ASSERT_OK(sv_recv_cb_called);
185
186 uv_run(uv_default_loop(), UV_RUN_DEFAULT);
187
188 ASSERT_EQ(1, cl_send_cb_called);
189 ASSERT_EQ(1, cl_recv_cb_called);
190 ASSERT_EQ(1, sv_send_cb_called);
191 ASSERT_EQ(1, sv_recv_cb_called);
192 ASSERT_EQ(2, close_cb_called);
193
194 MAKE_VALGRIND_HAPPY(uv_default_loop());
195 return 0;
196 }
197
