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 #if defined(__FreeBSD__) || defined(__NetBSD__)
30 #include <sys/sysctl.h>
31 #endif
32
33 #define CHECK_HANDLE(handle) \
34 ASSERT_NE((uv_udp_t*)(handle) == &server \
35 || (uv_udp_t*)(handle) == &client \
36 || (uv_timer_t*)(handle) == &timeout, 0)
37
38 #define CHECK_REQ(req) \
39 ASSERT_PTR_EQ((req), &req_);
40
41 static uv_udp_t client;
42 static uv_udp_t server;
43 static uv_udp_send_t req_;
44 static char data[10];
45 static uv_timer_t timeout;
46
47 static int send_cb_called;
48 static int recv_cb_called;
49 static int close_cb_called;
50 static uint16_t client_port;
51
52 #if defined(__FreeBSD__) || defined(__NetBSD__)
can_ipv6_ipv4_dual(void)53 static int can_ipv6_ipv4_dual(void) {
54 int v6only;
55 size_t size = sizeof(int);
56
57 if (sysctlbyname("net.inet6.ip6.v6only", &v6only, &size, NULL, 0))
58 return 0;
59
60 return v6only != 1;
61 }
62 #endif
63
64
alloc_cb(uv_handle_t * handle,size_t suggested_size,uv_buf_t * buf)65 static void alloc_cb(uv_handle_t* handle,
66 size_t suggested_size,
67 uv_buf_t* buf) {
68 static char slab[65536];
69 CHECK_HANDLE(handle);
70 buf->base = slab;
71 buf->len = sizeof(slab);
72 }
73
74
close_cb(uv_handle_t * handle)75 static void close_cb(uv_handle_t* handle) {
76 CHECK_HANDLE(handle);
77 close_cb_called++;
78 }
79
80
send_cb(uv_udp_send_t * req,int status)81 static void send_cb(uv_udp_send_t* req, int status) {
82 CHECK_REQ(req);
83 CHECK_HANDLE(req->handle);
84 ASSERT_OK(status);
85 send_cb_called++;
86 }
87
is_from_client(const struct sockaddr * addr)88 static int is_from_client(const struct sockaddr* addr) {
89 const struct sockaddr_in6* addr6;
90 char dst[256];
91 int r;
92
93 /* Debugging output, and filter out unwanted network traffic */
94 if (addr != NULL) {
95 ASSERT_EQ(addr->sa_family, AF_INET6);
96 addr6 = (struct sockaddr_in6*) addr;
97 r = uv_inet_ntop(addr->sa_family, &addr6->sin6_addr, dst, sizeof(dst));
98 if (r == 0)
99 printf("from [%.*s]:%d\n", (int) sizeof(dst), dst, addr6->sin6_port);
100 if (addr6->sin6_port != client_port)
101 return 0;
102 if (r != 0 || strcmp(dst, "::ffff:127.0.0.1"))
103 return 0;
104 }
105 return 1;
106 }
107
108
ipv6_recv_fail(uv_udp_t * handle,ssize_t nread,const uv_buf_t * buf,const struct sockaddr * addr,unsigned flags)109 static void ipv6_recv_fail(uv_udp_t* handle,
110 ssize_t nread,
111 const uv_buf_t* buf,
112 const struct sockaddr* addr,
113 unsigned flags) {
114 printf("got %d %.*s\n", (int) nread, nread > 0 ? (int) nread : 0, buf->base);
115 if (!is_from_client(addr) || (nread == 0 && addr == NULL))
116 return;
117 ASSERT(0 && "this function should not have been called");
118 }
119
120
ipv6_recv_ok(uv_udp_t * handle,ssize_t nread,const uv_buf_t * buf,const struct sockaddr * addr,unsigned flags)121 static void ipv6_recv_ok(uv_udp_t* handle,
122 ssize_t nread,
123 const uv_buf_t* buf,
124 const struct sockaddr* addr,
125 unsigned flags) {
126 CHECK_HANDLE(handle);
127
128 printf("got %d %.*s\n", (int) nread, nread > 0 ? (int) nread : 0, buf->base);
129 if (!is_from_client(addr) || (nread == 0 && addr == NULL))
130 return;
131
132 ASSERT_EQ(9, nread);
133 ASSERT(!memcmp(buf->base, data, 9));
134 recv_cb_called++;
135 }
136
137
timeout_cb(uv_timer_t * timer)138 static void timeout_cb(uv_timer_t* timer) {
139 uv_close((uv_handle_t*)&server, close_cb);
140 uv_close((uv_handle_t*)&client, close_cb);
141 uv_close((uv_handle_t*)&timeout, close_cb);
142 }
143
144
do_test(uv_udp_recv_cb recv_cb,int bind_flags)145 static void do_test(uv_udp_recv_cb recv_cb, int bind_flags) {
146 struct sockaddr_in6 addr6;
147 struct sockaddr_in addr;
148 int addr6_len;
149 int addr_len;
150 uv_buf_t buf;
151 char dst[256];
152 int r;
153
154 ASSERT_OK(uv_ip6_addr("::0", TEST_PORT, &addr6));
155
156 r = uv_udp_init(uv_default_loop(), &server);
157 ASSERT_OK(r);
158
159 r = uv_udp_bind(&server, (const struct sockaddr*) &addr6, bind_flags);
160 ASSERT_OK(r);
161
162 addr6_len = sizeof(addr6);
163 ASSERT_OK(uv_udp_getsockname(&server,
164 (struct sockaddr*) &addr6,
165 &addr6_len));
166 ASSERT_OK(uv_inet_ntop(addr6.sin6_family,
167 &addr6.sin6_addr,
168 dst,
169 sizeof(dst)));
170 printf("on [%.*s]:%d\n", (int) sizeof(dst), dst, addr6.sin6_port);
171
172 r = uv_udp_recv_start(&server, alloc_cb, recv_cb);
173 ASSERT_OK(r);
174
175 r = uv_udp_init(uv_default_loop(), &client);
176 ASSERT_OK(r);
177
178 ASSERT_OK(uv_ip4_addr("127.0.0.1", TEST_PORT, &addr));
179 ASSERT_OK(uv_inet_ntop(addr.sin_family, &addr.sin_addr, dst, sizeof(dst)));
180 printf("to [%.*s]:%d\n", (int) sizeof(dst), dst, addr.sin_port);
181
182 /* Create some unique data to send */
183 ASSERT_EQ(9, snprintf(data,
184 sizeof(data),
185 "PING%5u",
186 uv_os_getpid() & 0xFFFF));
187 buf = uv_buf_init(data, 9);
188 printf("sending %s\n", data);
189
190 r = uv_udp_send(&req_,
191 &client,
192 &buf,
193 1,
194 (const struct sockaddr*) &addr,
195 send_cb);
196 ASSERT_OK(r);
197
198 addr_len = sizeof(addr);
199 ASSERT_OK(uv_udp_getsockname(&client, (struct sockaddr*) &addr, &addr_len));
200 ASSERT_OK(uv_inet_ntop(addr.sin_family, &addr.sin_addr, dst, sizeof(dst)));
201 printf("from [%.*s]:%d\n", (int) sizeof(dst), dst, addr.sin_port);
202 client_port = addr.sin_port;
203
204 r = uv_timer_init(uv_default_loop(), &timeout);
205 ASSERT_OK(r);
206
207 r = uv_timer_start(&timeout, timeout_cb, 500, 0);
208 ASSERT_OK(r);
209
210 ASSERT_OK(close_cb_called);
211 ASSERT_OK(send_cb_called);
212 ASSERT_OK(recv_cb_called);
213
214 uv_run(uv_default_loop(), UV_RUN_DEFAULT);
215
216 ASSERT_EQ(3, close_cb_called);
217
218 MAKE_VALGRIND_HAPPY(uv_default_loop());
219 }
220
221
TEST_IMPL(udp_dual_stack)222 TEST_IMPL(udp_dual_stack) {
223 #if defined(__CYGWIN__) || defined(__MSYS__)
224 /* FIXME: Does Cygwin support this? */
225 RETURN_SKIP("FIXME: This test needs more investigation on Cygwin");
226 #endif
227
228 if (!can_ipv6())
229 RETURN_SKIP("IPv6 not supported");
230
231 #if defined(__FreeBSD__) || defined(__NetBSD__)
232 if (!can_ipv6_ipv4_dual())
233 RETURN_SKIP("IPv6-IPv4 dual stack not supported");
234 #elif defined(__OpenBSD__)
235 RETURN_SKIP("IPv6-IPv4 dual stack not supported");
236 #endif
237
238 do_test(ipv6_recv_ok, 0);
239
240 printf("recv_cb_called %d\n", recv_cb_called);
241 printf("send_cb_called %d\n", send_cb_called);
242 ASSERT_EQ(1, recv_cb_called);
243 ASSERT_EQ(1, send_cb_called);
244
245 return 0;
246 }
247
248
TEST_IMPL(udp_ipv6_only)249 TEST_IMPL(udp_ipv6_only) {
250 if (!can_ipv6())
251 RETURN_SKIP("IPv6 not supported");
252
253 do_test(ipv6_recv_fail, UV_UDP_IPV6ONLY);
254
255 ASSERT_OK(recv_cb_called);
256 ASSERT_EQ(1, send_cb_called);
257
258 return 0;
259 }
260
