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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
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28 typedef struct {
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29 uv_tcp_t handle;
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30 uv_shutdown_t shutdown_req;
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31 } conn_rec;
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32
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33 static uv_tcp_t tcp_server;
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34
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35 static void connection_cb(uv_stream_t* stream, int status);
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36 static void alloc_cb(uv_handle_t* handle, size_t suggested_size, uv_buf_t* buf);
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37 static void read_cb(uv_stream_t* stream, ssize_t nread, const uv_buf_t* buf);
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38 static void shutdown_cb(uv_shutdown_t* req, int status);
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39 static void close_cb(uv_handle_t* handle);
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40
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41
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42 static void connection_cb(uv_stream_t* stream, int status) {
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43 conn_rec* conn;
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44 int r;
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45
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46 ASSERT_OK(status);
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47 ASSERT_PTR_EQ(stream, (uv_stream_t*)&tcp_server);
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48
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49 conn = malloc(sizeof *conn);
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50 ASSERT_NOT_NULL(conn);
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51
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52 r = uv_tcp_init(stream->loop, &conn->handle);
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53 ASSERT_OK(r);
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54
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55 r = uv_accept(stream, (uv_stream_t*)&conn->handle);
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56 ASSERT_OK(r);
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57
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58 r = uv_read_start((uv_stream_t*)&conn->handle, alloc_cb, read_cb);
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59 ASSERT_OK(r);
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60 }
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61
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62
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63 static void alloc_cb(uv_handle_t* handle,
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64 size_t suggested_size,
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65 uv_buf_t* buf) {
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66 static char slab[65536];
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67 buf->base = slab;
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68 buf->len = sizeof(slab);
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69 }
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70
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71
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72 static void read_cb(uv_stream_t* stream, ssize_t nread, const uv_buf_t* buf) {
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73 conn_rec* conn;
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74 int r;
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75
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76 if (nread >= 0)
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77 return;
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78
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79 ASSERT_EQ(nread, UV_EOF);
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80
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81 conn = container_of(stream, conn_rec, handle);
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82
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83 r = uv_shutdown(&conn->shutdown_req, stream, shutdown_cb);
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84 ASSERT_OK(r);
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85 }
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86
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87
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88 static void shutdown_cb(uv_shutdown_t* req, int status) {
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89 conn_rec* conn = container_of(req, conn_rec, shutdown_req);
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90 uv_close((uv_handle_t*)&conn->handle, close_cb);
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91 }
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92
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93
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94 static void close_cb(uv_handle_t* handle) {
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95 conn_rec* conn = container_of(handle, conn_rec, handle);
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96 free(conn);
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97 }
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98
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99
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100 HELPER_IMPL(tcp4_blackhole_server) {
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101 struct sockaddr_in addr;
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102 uv_loop_t* loop;
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103 int r;
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104
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105 loop = uv_default_loop();
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106 ASSERT_OK(uv_ip4_addr("127.0.0.1", TEST_PORT, &addr));
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107
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108 r = uv_tcp_init(loop, &tcp_server);
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109 ASSERT_OK(r);
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110
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111 r = uv_tcp_bind(&tcp_server, (const struct sockaddr*) &addr, 0);
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112 ASSERT_OK(r);
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113
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114 r = uv_listen((uv_stream_t*)&tcp_server, 128, connection_cb);
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115 ASSERT_OK(r);
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116
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117 notify_parent_process();
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118 r = uv_run(loop, UV_RUN_DEFAULT);
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119 ASSERT(0 && "Blackhole server dropped out of event loop.");
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120
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121 return 0;
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122 }
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