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1 /* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
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2 *
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3 * Permission is hereby granted, free of charge, to any person obtaining a copy
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4 * of this software and associated documentation files (the "Software"), to
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5 * deal in the Software without restriction, including without limitation the
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6 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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7 * sell copies of the Software, and to permit persons to whom the Software is
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8 * furnished to do so, subject to the following conditions:
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9 *
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10 * The above copyright notice and this permission notice shall be included in
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11 * all copies or substantial portions of the Software.
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12 *
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13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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15 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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16 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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17 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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18 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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19 * IN THE SOFTWARE.
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20 */
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21
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22 #include "uv.h"
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23 #include "task.h"
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24
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25 #include <stdio.h>
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26 #include <stdlib.h>
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27 #include <string.h>
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28
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29 #define CHECK_HANDLE(handle) \
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30 ASSERT_NE((uv_udp_t*)(handle) == &server || (uv_udp_t*)(handle) == &client, 0)
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31
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32 static uv_udp_t server;
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33 static uv_udp_t client;
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34
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35 static int cl_send_cb_called;
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36 static int sv_recv_cb_called;
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37 static int close_cb_called;
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38
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39
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40 static void alloc_cb(uv_handle_t* handle,
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41 size_t suggested_size,
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42 uv_buf_t* buf) {
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43 static char slab[65536];
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44 CHECK_HANDLE(handle);
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45 ASSERT_LE(suggested_size, sizeof(slab));
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46 buf->base = slab;
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47 buf->len = sizeof(slab);
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48 }
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49
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50
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51 static void close_cb(uv_handle_t* handle) {
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52 CHECK_HANDLE(handle);
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53 ASSERT_EQ(1, uv_is_closing(handle));
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54 close_cb_called++;
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55 }
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56
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57
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58 static void cl_send_cb(uv_udp_send_t* req, int status) {
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59 ASSERT_NOT_NULL(req);
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60 ASSERT_OK(status);
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61 CHECK_HANDLE(req->handle);
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62
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63 cl_send_cb_called++;
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64 }
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65
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66
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67 static void sv_recv_cb(uv_udp_t* handle,
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68 ssize_t nread,
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69 const uv_buf_t* rcvbuf,
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70 const struct sockaddr* addr,
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71 unsigned flags) {
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72 if (nread < 0) {
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73 ASSERT(0 && "unexpected error");
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74 }
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75
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76 if (nread == 0) {
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77 /* Returning unused buffer. Don't count towards sv_recv_cb_called */
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78 ASSERT_NULL(addr);
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79 return;
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80 }
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81
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82 CHECK_HANDLE(handle);
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83 ASSERT_OK(flags);
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84
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85 ASSERT_NOT_NULL(addr);
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86 ASSERT_EQ(4, nread);
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87 ASSERT(memcmp("PING", rcvbuf->base, nread) == 0 ||
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88 memcmp("PANG", rcvbuf->base, nread) == 0);
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89
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90 if (++sv_recv_cb_called == 2) {
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91 uv_close((uv_handle_t*) &server, close_cb);
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92 uv_close((uv_handle_t*) &client, close_cb);
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93 }
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94 }
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95
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96
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97 TEST_IMPL(udp_send_immediate) {
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98 struct sockaddr_in addr;
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99 uv_udp_send_t req1, req2;
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100 uv_buf_t buf;
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101 int r;
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102
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103 ASSERT_OK(uv_ip4_addr("0.0.0.0", TEST_PORT, &addr));
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104
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105 r = uv_udp_init(uv_default_loop(), &server);
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106 ASSERT_OK(r);
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107
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108 r = uv_udp_bind(&server, (const struct sockaddr*) &addr, 0);
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109 ASSERT_OK(r);
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110
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111 r = uv_udp_recv_start(&server, alloc_cb, sv_recv_cb);
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112 ASSERT_OK(r);
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113
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114 ASSERT_OK(uv_ip4_addr("127.0.0.1", TEST_PORT, &addr));
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115
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116 r = uv_udp_init(uv_default_loop(), &client);
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117 ASSERT_OK(r);
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118
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119 /* client sends "PING", then "PANG" */
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120 buf = uv_buf_init("PING", 4);
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121
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122 r = uv_udp_send(&req1,
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123 &client,
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124 &buf,
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125 1,
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126 (const struct sockaddr*) &addr,
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127 cl_send_cb);
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128 ASSERT_OK(r);
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129
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130 buf = uv_buf_init("PANG", 4);
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131
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132 r = uv_udp_send(&req2,
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133 &client,
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134 &buf,
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135 1,
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136 (const struct sockaddr*) &addr,
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137 cl_send_cb);
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138 ASSERT_OK(r);
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139
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140 uv_run(uv_default_loop(), UV_RUN_DEFAULT);
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141
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142 ASSERT_EQ(2, cl_send_cb_called);
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143 ASSERT_EQ(2, sv_recv_cb_called);
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144 ASSERT_EQ(2, close_cb_called);
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145
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146 MAKE_VALGRIND_HAPPY(uv_default_loop());
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147 return 0;
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148 }
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