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#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;
34
35static int cl_send_cb_called;
36static int sv_recv_cb_called;
37static int close_cb_called;
38
39
40static void alloc_cb(uv_handle_t* handle,
41                     size_t suggested_size,
42                     uv_buf_t* buf) {
43  static char slab[65536];
44  CHECK_HANDLE(handle);
45  ASSERT_LE(suggested_size, sizeof(slab));
46  buf->base = slab;
47  buf->len = sizeof(slab);
48}
49
50
51static void close_cb(uv_handle_t* handle) {
52  CHECK_HANDLE(handle);
53  ASSERT_EQ(1, uv_is_closing(handle));
54  close_cb_called++;
55}
56
57
58static void cl_send_cb(uv_udp_send_t* req, int status) {
59  ASSERT_NOT_NULL(req);
60  ASSERT_OK(status);
61  CHECK_HANDLE(req->handle);
62
63  cl_send_cb_called++;
64}
65
66
67static void sv_recv_cb(uv_udp_t* handle,
68                       ssize_t nread,
69                       const uv_buf_t* rcvbuf,
70                       const struct sockaddr* addr,
71                       unsigned flags) {
72  if (nread < 0) {
73    ASSERT(0 && "unexpected error");
74  }
75
76  if (nread == 0) {
77    /* Returning unused buffer. Don't count towards sv_recv_cb_called */
78    ASSERT_NULL(addr);
79    return;
80  }
81
82  CHECK_HANDLE(handle);
83  ASSERT_OK(flags);
84
85  ASSERT_NOT_NULL(addr);
86  ASSERT_EQ(4, nread);
87  ASSERT(memcmp("PING", rcvbuf->base, nread) == 0 ||
88         memcmp("PANG", rcvbuf->base, nread) == 0);
89
90  if (++sv_recv_cb_called == 2) {
91    uv_close((uv_handle_t*) &server, close_cb);
92    uv_close((uv_handle_t*) &client, close_cb);
93  }
94}
95
96
97TEST_IMPL(udp_send_immediate) {
98  struct sockaddr_in addr;
99  uv_udp_send_t req1, req2;
100  uv_buf_t buf;
101  int r;
102
103  ASSERT_OK(uv_ip4_addr("0.0.0.0", TEST_PORT, &addr));
104
105  r = uv_udp_init(uv_default_loop(), &server);
106  ASSERT_OK(r);
107
108  r = uv_udp_bind(&server, (const struct sockaddr*) &addr, 0);
109  ASSERT_OK(r);
110
111  r = uv_udp_recv_start(&server, alloc_cb, sv_recv_cb);
112  ASSERT_OK(r);
113
114  ASSERT_OK(uv_ip4_addr("127.0.0.1", TEST_PORT, &addr));
115
116  r = uv_udp_init(uv_default_loop(), &client);
117  ASSERT_OK(r);
118
119  /* client sends "PING", then "PANG" */
120  buf = uv_buf_init("PING", 4);
121
122  r = uv_udp_send(&req1,
123                  &client,
124                  &buf,
125                  1,
126                  (const struct sockaddr*) &addr,
127                  cl_send_cb);
128  ASSERT_OK(r);
129
130  buf = uv_buf_init("PANG", 4);
131
132  r = uv_udp_send(&req2,
133                  &client,
134                  &buf,
135                  1,
136                  (const struct sockaddr*) &addr,
137                  cl_send_cb);
138  ASSERT_OK(r);
139
140  uv_run(uv_default_loop(), UV_RUN_DEFAULT);
141
142  ASSERT_EQ(2, cl_send_cb_called);
143  ASSERT_EQ(2, sv_recv_cb_called);
144  ASSERT_EQ(2, close_cb_called);
145
146  MAKE_VALGRIND_HAPPY(uv_default_loop());
147  return 0;
148}
149