1/* Copyright libuv project and 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#include <stdio.h>
25#include <stdlib.h>
26
27static uv_tcp_t tcp;
28static uv_connect_t connect_req;
29static uv_shutdown_t shutdown_req;
30static uv_buf_t qbuf;
31static int got_q;
32static int got_eof;
33static int called_connect_cb;
34static int called_shutdown_cb;
35static int called_tcp_close_cb;
36
37
38static void alloc_cb(uv_handle_t* handle, size_t size, uv_buf_t* buf) {
39  buf->base = malloc(size);
40  buf->len = size;
41}
42
43
44static void shutdown_cb(uv_shutdown_t *req, int status) {
45  ASSERT_PTR_EQ(req, &shutdown_req);
46
47  ASSERT_EQ(called_connect_cb, 1);
48  ASSERT_EQ(called_tcp_close_cb, 0);
49}
50
51
52static void read_cb(uv_stream_t* t, ssize_t nread, const uv_buf_t* buf) {
53  ASSERT_PTR_EQ((uv_tcp_t*)t, &tcp);
54
55  if (nread == 0) {
56    free(buf->base);
57    return;
58  }
59
60  if (!got_q) {
61    ASSERT_EQ(nread, 4);
62    ASSERT_EQ(got_eof, 0);
63    ASSERT_MEM_EQ(buf->base, "QQSS", 4);
64    free(buf->base);
65    got_q = 1;
66    puts("got QQSS");
67    /* Shutdown our end of the connection simultaneously */
68    uv_shutdown(&shutdown_req, (uv_stream_t*) &tcp, shutdown_cb);
69    called_shutdown_cb++;
70  } else {
71    ASSERT_EQ(nread, UV_EOF);
72    if (buf->base) {
73      free(buf->base);
74    }
75    got_eof = 1;
76    puts("got EOF");
77  }
78}
79
80
81static void connect_cb(uv_connect_t *req, int status) {
82  ASSERT_EQ(status, 0);
83  ASSERT_PTR_EQ(req, &connect_req);
84
85  /* Start reading from our connection so we can receive the EOF.  */
86  ASSERT_EQ(0, uv_read_start((uv_stream_t*)&tcp, alloc_cb, read_cb));
87
88  /* Check error handling. */
89  ASSERT_EQ(UV_EALREADY, uv_read_start((uv_stream_t*)&tcp, alloc_cb, read_cb));
90  ASSERT_EQ(UV_EINVAL, uv_read_start(NULL, alloc_cb, read_cb));
91  ASSERT_EQ(UV_EINVAL, uv_read_start((uv_stream_t*)&tcp, NULL, read_cb));
92  ASSERT_EQ(UV_EINVAL, uv_read_start((uv_stream_t*)&tcp, alloc_cb, NULL));
93
94  /*
95   * Write the letter 'Q' and 'QSS` to gracefully kill the echo-server. This
96   * will not effect our connection.
97   */
98  ASSERT_EQ(qbuf.len, uv_try_write((uv_stream_t*) &tcp, &qbuf, 1));
99
100  called_connect_cb++;
101  ASSERT_EQ(called_shutdown_cb, 0);
102}
103
104
105/*
106 * This test has a client which connects to the echo_server and immediately
107 * issues a shutdown. We check that this does not cause libuv to hang.
108 */
109TEST_IMPL(shutdown_simultaneous) {
110  struct sockaddr_in server_addr;
111  int r;
112
113  qbuf.base = "QQSS";
114  qbuf.len = 4;
115
116  ASSERT_EQ(0, uv_ip4_addr("127.0.0.1", TEST_PORT, &server_addr));
117  r = uv_tcp_init(uv_default_loop(), &tcp);
118  ASSERT_EQ(r, 0);
119
120  r = uv_tcp_connect(&connect_req,
121                     &tcp,
122                     (const struct sockaddr*) &server_addr,
123                     connect_cb);
124  ASSERT_EQ(r, 0);
125
126  uv_run(uv_default_loop(), UV_RUN_DEFAULT);
127
128  ASSERT_EQ(called_connect_cb, 1);
129  ASSERT_EQ(called_shutdown_cb, 1);
130  ASSERT_EQ(got_eof, 1);
131  ASSERT_EQ(got_q, 1);
132
133  MAKE_VALGRIND_HAPPY();
134  return 0;
135}
136