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
32static uv_udp_t server;
33static uv_udp_t client;
34static uv_buf_t buf;
35static struct sockaddr_in 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(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(req != NULL);
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
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(nread == 4);
90 ASSERT(addr != NULL);
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
100TEST_IMPL(udp_connect) {
101 uv_udp_send_t req;
102 struct sockaddr_in ext_addr;
103 struct sockaddr_in tmp_addr;
104 int r;
105 int addrlen;
106
107 ASSERT(0 == uv_ip4_addr("0.0.0.0", TEST_PORT, &lo_addr));
108
109 r = uv_udp_init(uv_default_loop(), &server);
110 ASSERT(r == 0);
111
112 r = uv_udp_bind(&server, (const struct sockaddr*) &lo_addr, 0);
113 ASSERT(r == 0);
114
115 r = uv_udp_recv_start(&server, alloc_cb, sv_recv_cb);
116 ASSERT(r == 0);
117
118 r = uv_udp_init(uv_default_loop(), &client);
119 ASSERT(r == 0);
120
121 buf = uv_buf_init("EXIT", 4);
122
123 ASSERT(0 == uv_ip4_addr("8.8.8.8", TEST_PORT, &ext_addr));
124 ASSERT(0 == uv_ip4_addr("127.0.0.1", TEST_PORT, &lo_addr));
125
126 r = uv_udp_connect(&client, (const struct sockaddr*) &lo_addr);
127 ASSERT(r == 0);
128 r = uv_udp_connect(&client, (const struct sockaddr*) &ext_addr);
129 ASSERT(r == UV_EISCONN);
130
131 addrlen = sizeof(tmp_addr);
132 r = uv_udp_getpeername(&client, (struct sockaddr*) &tmp_addr, &addrlen);
133 ASSERT(r == 0);
134
135 /* To send messages in connected UDP sockets addr must be NULL */
136 r = uv_udp_try_send(&client, &buf, 1, (const struct sockaddr*) &lo_addr);
137 ASSERT(r == UV_EISCONN);
138 r = uv_udp_try_send(&client, &buf, 1, NULL);
139 ASSERT(r == 4);
140 r = uv_udp_try_send(&client, &buf, 1, (const struct sockaddr*) &ext_addr);
141 ASSERT(r == UV_EISCONN);
142
143 r = uv_udp_connect(&client, NULL);
144 ASSERT(r == 0);
145 r = uv_udp_connect(&client, NULL);
146 ASSERT(r == UV_ENOTCONN);
147
148 addrlen = sizeof(tmp_addr);
149 r = uv_udp_getpeername(&client, (struct sockaddr*) &tmp_addr, &addrlen);
150 ASSERT(r == UV_ENOTCONN);
151
152 /* To send messages in disconnected UDP sockets addr must be set */
153 r = uv_udp_try_send(&client, &buf, 1, (const struct sockaddr*) &lo_addr);
154 ASSERT(r == 4);
155 r = uv_udp_try_send(&client, &buf, 1, NULL);
156 ASSERT(r == UV_EDESTADDRREQ);
157
158
159 r = uv_udp_connect(&client, (const struct sockaddr*) &lo_addr);
160 ASSERT(r == 0);
161 r = uv_udp_send(&req,
162 &client,
163 &buf,
164 1,
165 (const struct sockaddr*) &lo_addr,
166 cl_send_cb);
167 ASSERT(r == UV_EISCONN);
168 r = uv_udp_send(&req, &client, &buf, 1, NULL, cl_send_cb);
169 ASSERT(r == 0);
170
171 uv_run(uv_default_loop(), UV_RUN_DEFAULT);
172
173 ASSERT(close_cb_called == 2);
174 ASSERT(sv_recv_cb_called == 4);
175 ASSERT(cl_send_cb_called == 2);
176
177 ASSERT(client.send_queue_size == 0);
178 ASSERT(server.send_queue_size == 0);
179
180 MAKE_VALGRIND_HAPPY();
181 return 0;
182}
183