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((uv_udp_t*)(handle) == &server || (uv_udp_t*)(handle) == &client)
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(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(status == 0);
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(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(r == 0);
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(nread == 4);
90 ASSERT_NOT_NULL(addr);
91 ASSERT(memcmp("EXIT", rcvbuf->base, nread) == 0);
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(__PASE__)
102 RETURN_SKIP(
103 "IBMi PASE's UDP connection can not be disconnected with AF_UNSPEC.");
104 #endif
105 uv_udp_send_t req;
106 struct sockaddr_in ext_addr;
107 struct sockaddr_in tmp_addr;
108 int r;
109 int addrlen;
110
111 ASSERT(0 == uv_ip4_addr("0.0.0.0", TEST_PORT, &lo_addr));
112
113 r = uv_udp_init(uv_default_loop(), &server);
114 ASSERT(r == 0);
115
116 r = uv_udp_bind(&server, (const struct sockaddr*) &lo_addr, 0);
117 ASSERT(r == 0);
118
119 r = uv_udp_recv_start(&server, alloc_cb, sv_recv_cb);
120 ASSERT(r == 0);
121
122 r = uv_udp_init(uv_default_loop(), &client);
123 ASSERT(r == 0);
124
125 buf = uv_buf_init("EXIT", 4);
126
127 /* connect() to INADDR_ANY fails on Windows with WSAEADDRNOTAVAIL */
128 ASSERT_EQ(0, uv_ip4_addr("0.0.0.0", TEST_PORT, &tmp_addr));
129 r = uv_udp_connect(&client, (const struct sockaddr*) &tmp_addr);
130 #ifdef _WIN32
131 ASSERT_EQ(r, UV_EADDRNOTAVAIL);
132 #else
133 ASSERT_EQ(r, 0);
134 r = uv_udp_connect(&client, NULL);
135 ASSERT_EQ(r, 0);
136 #endif
137
138 ASSERT(0 == uv_ip4_addr("8.8.8.8", TEST_PORT, &ext_addr));
139 ASSERT(0 == uv_ip4_addr("127.0.0.1", TEST_PORT, &lo_addr));
140
141 r = uv_udp_connect(&client, (const struct sockaddr*) &lo_addr);
142 ASSERT(r == 0);
143 r = uv_udp_connect(&client, (const struct sockaddr*) &ext_addr);
144 ASSERT(r == UV_EISCONN);
145
146 addrlen = sizeof(tmp_addr);
147 r = uv_udp_getpeername(&client, (struct sockaddr*) &tmp_addr, &addrlen);
148 ASSERT(r == 0);
149
150 /* To send messages in connected UDP sockets addr must be NULL */
151 r = uv_udp_try_send(&client, &buf, 1, (const struct sockaddr*) &lo_addr);
152 ASSERT(r == UV_EISCONN);
153 r = uv_udp_try_send(&client, &buf, 1, NULL);
154 ASSERT(r == 4);
155 r = uv_udp_try_send(&client, &buf, 1, (const struct sockaddr*) &ext_addr);
156 ASSERT(r == UV_EISCONN);
157
158 r = uv_udp_connect(&client, NULL);
159 ASSERT(r == 0);
160 r = uv_udp_connect(&client, NULL);
161 ASSERT(r == UV_ENOTCONN);
162
163 addrlen = sizeof(tmp_addr);
164 r = uv_udp_getpeername(&client, (struct sockaddr*) &tmp_addr, &addrlen);
165 ASSERT(r == UV_ENOTCONN);
166
167 /* To send messages in disconnected UDP sockets addr must be set */
168 r = uv_udp_try_send(&client, &buf, 1, (const struct sockaddr*) &lo_addr);
169 ASSERT(r == 4);
170 r = uv_udp_try_send(&client, &buf, 1, NULL);
171 ASSERT(r == UV_EDESTADDRREQ);
172
173
174 r = uv_udp_connect(&client, (const struct sockaddr*) &lo_addr);
175 ASSERT(r == 0);
176 r = uv_udp_send(&req,
177 &client,
178 &buf,
179 1,
180 (const struct sockaddr*) &lo_addr,
181 cl_send_cb);
182 ASSERT(r == UV_EISCONN);
183 r = uv_udp_send(&req, &client, &buf, 1, NULL, cl_send_cb);
184 ASSERT(r == 0);
185
186 uv_run(uv_default_loop(), UV_RUN_DEFAULT);
187
188 ASSERT(close_cb_called == 2);
189 ASSERT(sv_recv_cb_called == 4);
190 ASSERT(cl_send_cb_called == 2);
191
192 ASSERT(client.send_queue_size == 0);
193 ASSERT(server.send_queue_size == 0);
194
195 MAKE_VALGRIND_HAPPY();
196 return 0;
197 }
198