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1 /* Copyright libuv project 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 <stdio.h>
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23 #include <stdlib.h>
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24 #include <string.h>
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25
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26 #include "task.h"
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27 #include "uv.h"
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28
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29 static uv_tcp_t server;
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30 static uv_tcp_t client;
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31 static uv_tcp_t incoming;
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32 static int connect_cb_called;
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33 static int close_cb_called;
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34 static int connection_cb_called;
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35 static int write_cb_called;
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36 static uv_write_t small_write;
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37 static uv_write_t big_write;
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38
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39 /* 10 MB, which is large than the send buffer size and the recv buffer */
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40 static char data[1024 * 1024 * 10];
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41
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42 static void close_cb(uv_handle_t* handle) {
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43 close_cb_called++;
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44 }
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45
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46 static void write_cb(uv_write_t* w, int status) {
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47 /* the small write should finish immediately after the big write */
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48 ASSERT_OK(uv_stream_get_write_queue_size((uv_stream_t*) &client));
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49
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50 write_cb_called++;
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51
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52 if (write_cb_called == 2) {
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53 /* we are done */
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54 uv_close((uv_handle_t*) &client, close_cb);
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55 uv_close((uv_handle_t*) &incoming, close_cb);
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56 uv_close((uv_handle_t*) &server, close_cb);
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57 }
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58 }
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59
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60 static void connect_cb(uv_connect_t* _, int status) {
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61 int r;
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62 uv_buf_t buf;
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63 size_t write_queue_size0, write_queue_size1;
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64
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65 ASSERT_OK(status);
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66 connect_cb_called++;
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67
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68 /* fire a big write */
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69 buf = uv_buf_init(data, sizeof(data));
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70 r = uv_write(&small_write, (uv_stream_t*) &client, &buf, 1, write_cb);
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71 ASSERT_OK(r);
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72
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73 /* check that the write process gets stuck */
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74 write_queue_size0 = uv_stream_get_write_queue_size((uv_stream_t*) &client);
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75 ASSERT_GT(write_queue_size0, 0);
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76
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77 /* fire a small write, which should be queued */
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78 buf = uv_buf_init("A", 1);
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79 r = uv_write(&big_write, (uv_stream_t*) &client, &buf, 1, write_cb);
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80 ASSERT_OK(r);
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81
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82 write_queue_size1 = uv_stream_get_write_queue_size((uv_stream_t*) &client);
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83 ASSERT_EQ(write_queue_size1, write_queue_size0 + 1);
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84 }
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85
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86 static void alloc_cb(uv_handle_t* handle, size_t size, uv_buf_t* buf) {
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87 static char base[1024];
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88
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89 buf->base = base;
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90 buf->len = sizeof(base);
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91 }
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92
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93 static void read_cb(uv_stream_t* tcp, ssize_t nread, const uv_buf_t* buf) {}
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94
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95 static void connection_cb(uv_stream_t* tcp, int status) {
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96 ASSERT_OK(status);
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97 connection_cb_called++;
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98
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99 ASSERT_OK(uv_tcp_init(tcp->loop, &incoming));
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100 ASSERT_OK(uv_accept(tcp, (uv_stream_t*) &incoming));
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101 ASSERT_OK(uv_read_start((uv_stream_t*) &incoming, alloc_cb, read_cb));
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102 }
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103
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104 static void start_server(void) {
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105 struct sockaddr_in addr;
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106
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107 ASSERT_OK(uv_ip4_addr("0.0.0.0", TEST_PORT, &addr));
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108
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109 ASSERT_OK(uv_tcp_init(uv_default_loop(), &server));
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110 ASSERT_OK(uv_tcp_bind(&server, (struct sockaddr*) &addr, 0));
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111 ASSERT_OK(uv_listen((uv_stream_t*) &server, 128, connection_cb));
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112 }
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113
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114 TEST_IMPL(tcp_write_in_a_row) {
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115 #if defined(_WIN32)
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116 RETURN_SKIP("tcp_write_in_a_row does not work on Windows");
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117 #elif defined(__PASE__)
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118 RETURN_SKIP("tcp_write_in_a_row does not work on IBM i PASE");
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119 #else
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120 uv_connect_t connect_req;
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121 struct sockaddr_in addr;
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122
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123 start_server();
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124
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125 ASSERT_OK(uv_ip4_addr("127.0.0.1", TEST_PORT, &addr));
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126
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127 ASSERT_OK(uv_tcp_init(uv_default_loop(), &client));
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128 ASSERT_OK(uv_tcp_connect(&connect_req,
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129 &client,
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130 (struct sockaddr*) &addr,
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131 connect_cb));
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132
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133 ASSERT_OK(uv_run(uv_default_loop(), UV_RUN_DEFAULT));
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134
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135 ASSERT_EQ(1, connect_cb_called);
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136 ASSERT_EQ(3, close_cb_called);
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137 ASSERT_EQ(1, connection_cb_called);
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138 ASSERT_EQ(2, write_cb_called);
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139
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140 MAKE_VALGRIND_HAPPY(uv_default_loop());
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141 return 0;
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142 #endif
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143 }
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