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