1/* Copyright 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_HANDLE(handle) \
30  ASSERT_NE((uv_udp_t*)(handle) == &server || (uv_udp_t*)(handle) == &client, 0)
31
32static uv_udp_t server;
33static uv_udp_t client;
34static uv_buf_t buf;
35static struct sockaddr_in6 lo_addr;
36
37static int cl_send_cb_called;
38static int sv_recv_cb_called;
39
40static int close_cb_called;
41
42
43static void alloc_cb(uv_handle_t* handle,
44                     size_t suggested_size,
45                     uv_buf_t* buf) {
46  static char slab[65536];
47  CHECK_HANDLE(handle);
48  ASSERT_LE(suggested_size, sizeof(slab));
49  buf->base = slab;
50  buf->len = sizeof(slab);
51}
52
53
54static void close_cb(uv_handle_t* handle) {
55  CHECK_HANDLE(handle);
56  ASSERT(uv_is_closing(handle));
57  close_cb_called++;
58}
59
60
61static void cl_send_cb(uv_udp_send_t* req, int status) {
62  int r;
63
64  ASSERT_NOT_NULL(req);
65  ASSERT_OK(status);
66  CHECK_HANDLE(req->handle);
67  if (++cl_send_cb_called == 1) {
68    uv_udp_connect(&client, NULL);
69    r = uv_udp_send(req, &client, &buf, 1, NULL, cl_send_cb);
70    ASSERT_EQ(r, UV_EDESTADDRREQ);
71    r = uv_udp_send(req,
72                    &client,
73                    &buf,
74                    1,
75                    (const struct sockaddr*) &lo_addr,
76                    cl_send_cb);
77    ASSERT_OK(r);
78  }
79
80}
81
82
83static void sv_recv_cb(uv_udp_t* handle,
84                       ssize_t nread,
85                       const uv_buf_t* rcvbuf,
86                       const struct sockaddr* addr,
87                       unsigned flags) {
88  if (nread > 0) {
89    ASSERT_EQ(4, nread);
90    ASSERT_NOT_NULL(addr);
91    ASSERT_OK(memcmp("EXIT", rcvbuf->base, nread));
92    if (++sv_recv_cb_called == 4) {
93      uv_close((uv_handle_t*) &server, close_cb);
94      uv_close((uv_handle_t*) &client, close_cb);
95    }
96  }
97}
98
99
100TEST_IMPL(udp_connect6) {
101#if defined(__OpenBSD__)
102  RETURN_SKIP("Test does not currently work in OpenBSD");
103#endif
104  uv_udp_send_t req;
105  struct sockaddr_in6 ext_addr;
106  struct sockaddr_in6 tmp_addr;
107  int r;
108  int addrlen;
109
110  if (!can_ipv6())
111    RETURN_SKIP("IPv6 not supported");
112
113  ASSERT_OK(uv_ip6_addr("::", TEST_PORT, &lo_addr));
114
115  r = uv_udp_init(uv_default_loop(), &server);
116  ASSERT_OK(r);
117
118  r = uv_udp_bind(&server, (const struct sockaddr*) &lo_addr, 0);
119  ASSERT_OK(r);
120
121  r = uv_udp_recv_start(&server, alloc_cb, sv_recv_cb);
122  ASSERT_OK(r);
123
124  r = uv_udp_init(uv_default_loop(), &client);
125  ASSERT_OK(r);
126
127  buf = uv_buf_init("EXIT", 4);
128
129  /* connect() to INADDR_ANY fails on Windows wih WSAEADDRNOTAVAIL */
130  ASSERT_OK(uv_ip6_addr("::", TEST_PORT, &tmp_addr));
131  r = uv_udp_connect(&client, (const struct sockaddr*) &tmp_addr);
132#ifdef _WIN32
133  ASSERT_EQ(r, UV_EADDRNOTAVAIL);
134#else
135  ASSERT_OK(r);
136  r = uv_udp_connect(&client, NULL);
137  ASSERT_OK(r);
138#endif
139
140  ASSERT_OK(uv_ip6_addr("2001:4860:4860::8888", TEST_PORT, &ext_addr));
141  ASSERT_OK(uv_ip6_addr("::1", TEST_PORT, &lo_addr));
142
143  r = uv_udp_connect(&client, (const struct sockaddr*) &lo_addr);
144  ASSERT_OK(r);
145  r = uv_udp_connect(&client, (const struct sockaddr*) &ext_addr);
146  ASSERT_EQ(r, UV_EISCONN);
147
148  addrlen = sizeof(tmp_addr);
149  r = uv_udp_getpeername(&client, (struct sockaddr*) &tmp_addr, &addrlen);
150  ASSERT_OK(r);
151
152  /* To send messages in connected UDP sockets addr must be NULL */
153  r = uv_udp_try_send(&client, &buf, 1, (const struct sockaddr*) &lo_addr);
154  ASSERT_EQ(r, UV_EISCONN);
155  r = uv_udp_try_send(&client, &buf, 1, NULL);
156  ASSERT_EQ(4, r);
157  r = uv_udp_try_send(&client, &buf, 1, (const struct sockaddr*) &ext_addr);
158  ASSERT_EQ(r, UV_EISCONN);
159
160  r = uv_udp_connect(&client, NULL);
161  ASSERT_OK(r);
162  r = uv_udp_connect(&client, NULL);
163  ASSERT_EQ(r, UV_ENOTCONN);
164
165  addrlen = sizeof(tmp_addr);
166  r = uv_udp_getpeername(&client, (struct sockaddr*) &tmp_addr, &addrlen);
167  ASSERT_EQ(r, UV_ENOTCONN);
168
169  /* To send messages in disconnected UDP sockets addr must be set */
170  r = uv_udp_try_send(&client, &buf, 1, (const struct sockaddr*) &lo_addr);
171  ASSERT_EQ(4, r);
172  r = uv_udp_try_send(&client, &buf, 1, NULL);
173  ASSERT_EQ(r, UV_EDESTADDRREQ);
174
175
176  r = uv_udp_connect(&client, (const struct sockaddr*) &lo_addr);
177  ASSERT_OK(r);
178  r = uv_udp_send(&req,
179                  &client,
180                  &buf,
181                  1,
182                  (const struct sockaddr*) &lo_addr,
183                  cl_send_cb);
184  ASSERT_EQ(r, UV_EISCONN);
185  r = uv_udp_send(&req, &client, &buf, 1, NULL, cl_send_cb);
186  ASSERT_OK(r);
187
188  uv_run(uv_default_loop(), UV_RUN_DEFAULT);
189
190  ASSERT_EQ(2, close_cb_called);
191  ASSERT_EQ(4, sv_recv_cb_called);
192  ASSERT_EQ(2, cl_send_cb_called);
193
194  ASSERT_OK(client.send_queue_size);
195  ASSERT_OK(server.send_queue_size);
196
197  MAKE_VALGRIND_HAPPY(uv_default_loop());
198  return 0;
199}
200