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
32 static uv_udp_t server;
33 static uv_udp_t client;
34 static uv_buf_t buf;
35 static struct sockaddr_in lo_addr;
36
37 static int cl_send_cb_called;
38 static int sv_recv_cb_called;
39
40 static int close_cb_called;
41
42
alloc_cb(uv_handle_t * handle,size_t suggested_size,uv_buf_t * buf)43 static 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
close_cb(uv_handle_t * handle)54 static void close_cb(uv_handle_t* handle) {
55 CHECK_HANDLE(handle);
56 ASSERT(uv_is_closing(handle));
57 close_cb_called++;
58 }
59
60
cl_send_cb(uv_udp_send_t * req,int status)61 static 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
sv_recv_cb(uv_udp_t * handle,ssize_t nread,const uv_buf_t * rcvbuf,const struct sockaddr * addr,unsigned flags)83 static 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
TEST_IMPL(udp_connect)100 TEST_IMPL(udp_connect) {
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_in ext_addr;
106 struct sockaddr_in tmp_addr;
107 int r;
108 int addrlen;
109
110 ASSERT_OK(uv_ip4_addr("0.0.0.0", TEST_PORT, &lo_addr));
111
112 r = uv_udp_init(uv_default_loop(), &server);
113 ASSERT_OK(r);
114
115 r = uv_udp_bind(&server, (const struct sockaddr*) &lo_addr, 0);
116 ASSERT_OK(r);
117
118 r = uv_udp_recv_start(&server, alloc_cb, sv_recv_cb);
119 ASSERT_OK(r);
120
121 r = uv_udp_init(uv_default_loop(), &client);
122 ASSERT_OK(r);
123
124 buf = uv_buf_init("EXIT", 4);
125
126 /* connect() to INADDR_ANY fails on Windows with WSAEADDRNOTAVAIL */
127 ASSERT_OK(uv_ip4_addr("0.0.0.0", TEST_PORT, &tmp_addr));
128 r = uv_udp_connect(&client, (const struct sockaddr*) &tmp_addr);
129 #ifdef _WIN32
130 ASSERT_EQ(r, UV_EADDRNOTAVAIL);
131 #else
132 ASSERT_OK(r);
133 r = uv_udp_connect(&client, NULL);
134 ASSERT_OK(r);
135 #endif
136
137 ASSERT_OK(uv_ip4_addr("8.8.8.8", TEST_PORT, &ext_addr));
138 ASSERT_OK(uv_ip4_addr("127.0.0.1", TEST_PORT, &lo_addr));
139
140 r = uv_udp_connect(&client, (const struct sockaddr*) &lo_addr);
141 ASSERT_OK(r);
142 r = uv_udp_connect(&client, (const struct sockaddr*) &ext_addr);
143 ASSERT_EQ(r, UV_EISCONN);
144
145 addrlen = sizeof(tmp_addr);
146 r = uv_udp_getpeername(&client, (struct sockaddr*) &tmp_addr, &addrlen);
147 ASSERT_OK(r);
148
149 /* To send messages in connected UDP sockets addr must be NULL */
150 r = uv_udp_try_send(&client, &buf, 1, (const struct sockaddr*) &lo_addr);
151 ASSERT_EQ(r, UV_EISCONN);
152 r = uv_udp_try_send(&client, &buf, 1, NULL);
153 ASSERT_EQ(4, r);
154 r = uv_udp_try_send(&client, &buf, 1, (const struct sockaddr*) &ext_addr);
155 ASSERT_EQ(r, UV_EISCONN);
156
157 r = uv_udp_connect(&client, NULL);
158 ASSERT_OK(r);
159 r = uv_udp_connect(&client, NULL);
160 ASSERT_EQ(r, UV_ENOTCONN);
161
162 addrlen = sizeof(tmp_addr);
163 r = uv_udp_getpeername(&client, (struct sockaddr*) &tmp_addr, &addrlen);
164 ASSERT_EQ(r, UV_ENOTCONN);
165
166 /* To send messages in disconnected UDP sockets addr must be set */
167 r = uv_udp_try_send(&client, &buf, 1, (const struct sockaddr*) &lo_addr);
168 ASSERT_EQ(4, r);
169 r = uv_udp_try_send(&client, &buf, 1, NULL);
170 ASSERT_EQ(r, UV_EDESTADDRREQ);
171
172
173 r = uv_udp_connect(&client, (const struct sockaddr*) &lo_addr);
174 ASSERT_OK(r);
175 r = uv_udp_send(&req,
176 &client,
177 &buf,
178 1,
179 (const struct sockaddr*) &lo_addr,
180 cl_send_cb);
181 ASSERT_EQ(r, UV_EISCONN);
182 r = uv_udp_send(&req, &client, &buf, 1, NULL, cl_send_cb);
183 ASSERT_OK(r);
184
185 uv_run(uv_default_loop(), UV_RUN_DEFAULT);
186
187 ASSERT_EQ(2, close_cb_called);
188 ASSERT_EQ(4, sv_recv_cb_called);
189 ASSERT_EQ(2, cl_send_cb_called);
190
191 ASSERT_OK(client.send_queue_size);
192 ASSERT_OK(server.send_queue_size);
193
194 MAKE_VALGRIND_HAPPY(uv_default_loop());
195 return 0;
196 }
197
