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_NE((uv_udp_t*)(handle) == &client || (uv_udp_t*)(handle) == &client2, 0)
31
32static uv_udp_t client;
33static uv_udp_t client2;
34static uv_timer_t timer;
35
36static int send_cb_called;
37static int recv_cb_called;
38static int close_cb_called;
39static int alloc_cb_called;
40static int timer_cb_called;
41static int can_recverr;
42
43
44static 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_LE(suggested_size, sizeof(slab));
50  buf->base = slab;
51  buf->len = sizeof(slab);
52  alloc_cb_called++;
53}
54
55
56static void close_cb(uv_handle_t* handle) {
57  ASSERT_EQ(1, uv_is_closing(handle));
58  close_cb_called++;
59}
60
61
62static void send_cb(uv_udp_send_t* req, int status) {
63  ASSERT_NOT_NULL(req);
64  ASSERT_OK(status);
65  ASSERT_OK(status);
66  CHECK_HANDLE(req->handle);
67  send_cb_called++;
68}
69
70static void send_cb_recverr(uv_udp_send_t* req, int status) {
71  ASSERT_PTR_NE(req, NULL);
72  ASSERT(status == 0 || status == UV_ECONNREFUSED);
73  CHECK_HANDLE(req->handle);
74  send_cb_called++;
75}
76
77static void recv_cb(uv_udp_t* handle,
78                       ssize_t nread,
79                       const uv_buf_t* rcvbuf,
80                       const struct sockaddr* addr,
81                       unsigned flags) {
82  CHECK_HANDLE(handle);
83  recv_cb_called++;
84
85  if (nread < 0) {
86    ASSERT(0 && "unexpected error");
87  } else if (nread == 0) {
88    /* Returning unused buffer */
89    ASSERT_NULL(addr);
90  } else {
91    ASSERT_NOT_NULL(addr);
92  }
93}
94
95
96static void timer_cb(uv_timer_t* h) {
97  ASSERT_PTR_EQ(h, &timer);
98  timer_cb_called++;
99  uv_close((uv_handle_t*) &client, close_cb);
100  if (can_recverr)
101    uv_close((uv_handle_t*) &client2, close_cb);
102  uv_close((uv_handle_t*) h, close_cb);
103}
104
105
106TEST_IMPL(udp_send_unreachable) {
107  struct sockaddr_in addr;
108  struct sockaddr_in addr2;
109  struct sockaddr_in addr3;
110  uv_udp_send_t req1, req2, req3, req4;
111  uv_buf_t buf;
112  int r;
113
114#ifdef __linux__
115  can_recverr = 1;
116#endif
117
118  ASSERT_OK(uv_ip4_addr("127.0.0.1", TEST_PORT, &addr));
119  ASSERT_OK(uv_ip4_addr("127.0.0.1", TEST_PORT_2, &addr2));
120  ASSERT_OK(uv_ip4_addr("127.0.0.1", TEST_PORT_3, &addr3));
121
122  r = uv_timer_init( uv_default_loop(), &timer );
123  ASSERT_OK(r);
124
125  r = uv_timer_start( &timer, timer_cb, 1000, 0 );
126  ASSERT_OK(r);
127
128  r = uv_udp_init(uv_default_loop(), &client);
129  ASSERT_OK(r);
130
131  r = uv_udp_bind(&client, (const struct sockaddr*) &addr2, 0);
132  ASSERT_OK(r);
133
134  r = uv_udp_recv_start(&client, alloc_cb, recv_cb);
135  ASSERT_OK(r);
136
137  /* client sends "PING", then "PANG" */
138  buf = uv_buf_init("PING", 4);
139
140  r = uv_udp_send(&req1,
141                  &client,
142                  &buf,
143                  1,
144                  (const struct sockaddr*) &addr,
145                  send_cb);
146  ASSERT_OK(r);
147
148  buf = uv_buf_init("PANG", 4);
149
150  r = uv_udp_send(&req2,
151                  &client,
152                  &buf,
153                  1,
154                  (const struct sockaddr*) &addr,
155                  send_cb);
156  ASSERT_OK(r);
157
158  if (can_recverr) {
159    r = uv_udp_init(uv_default_loop(), &client2);
160    ASSERT_OK(r);
161
162    r = uv_udp_bind(&client2,
163                    (const struct sockaddr*) &addr3,
164                    UV_UDP_LINUX_RECVERR);
165    ASSERT_OK(r);
166
167    r = uv_udp_recv_start(&client2, alloc_cb, recv_cb);
168    ASSERT_OK(r);
169
170    /* client sends "PING", then "PANG" */
171    buf = uv_buf_init("PING", 4);
172
173    r = uv_udp_send(&req3,
174                    &client2,
175                    &buf,
176                    1,
177                    (const struct sockaddr*) &addr,
178                    send_cb_recverr);
179    ASSERT_OK(r);
180
181    buf = uv_buf_init("PANG", 4);
182
183    r = uv_udp_send(&req4,
184                    &client2,
185                    &buf,
186                    1,
187                    (const struct sockaddr*) &addr,
188                    send_cb_recverr);
189    ASSERT_OK(r);
190  }
191
192  uv_run(uv_default_loop(), UV_RUN_DEFAULT);
193
194  ASSERT_EQ(send_cb_called, (long)(can_recverr ? 4 : 2));
195  ASSERT_EQ(recv_cb_called, alloc_cb_called);
196  ASSERT_EQ(1, timer_cb_called);
197  ASSERT_EQ(close_cb_called, (long)(can_recverr ? 3 : 2));
198
199  MAKE_VALGRIND_HAPPY(uv_default_loop());
200  return 0;
201}
202