1 /* Copyright libuv project 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 <stdio.h>
23 #include <stdlib.h>
24 #include <string.h>
25
26 #include "task.h"
27 #include "uv.h"
28
29 static uv_tcp_t server;
30 static uv_tcp_t client;
31 static uv_tcp_t incoming;
32 static int connect_cb_called;
33 static int close_cb_called;
34 static int connection_cb_called;
35 static int write_cb_called;
36 static uv_write_t small_write;
37 static uv_write_t big_write;
38
39 /* 10 MB, which is large than the send buffer size and the recv buffer */
40 static char data[1024 * 1024 * 10];
41
close_cb(uv_handle_t * handle)42 static void close_cb(uv_handle_t* handle) {
43 close_cb_called++;
44 }
45
write_cb(uv_write_t * w,int status)46 static void write_cb(uv_write_t* w, int status) {
47 /* the small write should finish immediately after the big write */
48 ASSERT_OK(uv_stream_get_write_queue_size((uv_stream_t*) &client));
49
50 write_cb_called++;
51
52 if (write_cb_called == 2) {
53 /* we are done */
54 uv_close((uv_handle_t*) &client, close_cb);
55 uv_close((uv_handle_t*) &incoming, close_cb);
56 uv_close((uv_handle_t*) &server, close_cb);
57 }
58 }
59
connect_cb(uv_connect_t * _,int status)60 static void connect_cb(uv_connect_t* _, int status) {
61 int r;
62 uv_buf_t buf;
63 size_t write_queue_size0, write_queue_size1;
64
65 ASSERT_OK(status);
66 connect_cb_called++;
67
68 /* fire a big write */
69 buf = uv_buf_init(data, sizeof(data));
70 r = uv_write(&small_write, (uv_stream_t*) &client, &buf, 1, write_cb);
71 ASSERT_OK(r);
72
73 /* check that the write process gets stuck */
74 write_queue_size0 = uv_stream_get_write_queue_size((uv_stream_t*) &client);
75 ASSERT_GT(write_queue_size0, 0);
76
77 /* fire a small write, which should be queued */
78 buf = uv_buf_init("A", 1);
79 r = uv_write(&big_write, (uv_stream_t*) &client, &buf, 1, write_cb);
80 ASSERT_OK(r);
81
82 write_queue_size1 = uv_stream_get_write_queue_size((uv_stream_t*) &client);
83 ASSERT_EQ(write_queue_size1, write_queue_size0 + 1);
84 }
85
alloc_cb(uv_handle_t * handle,size_t size,uv_buf_t * buf)86 static void alloc_cb(uv_handle_t* handle, size_t size, uv_buf_t* buf) {
87 static char base[1024];
88
89 buf->base = base;
90 buf->len = sizeof(base);
91 }
92
read_cb(uv_stream_t * tcp,ssize_t nread,const uv_buf_t * buf)93 static void read_cb(uv_stream_t* tcp, ssize_t nread, const uv_buf_t* buf) {}
94
connection_cb(uv_stream_t * tcp,int status)95 static void connection_cb(uv_stream_t* tcp, int status) {
96 ASSERT_OK(status);
97 connection_cb_called++;
98
99 ASSERT_OK(uv_tcp_init(tcp->loop, &incoming));
100 ASSERT_OK(uv_accept(tcp, (uv_stream_t*) &incoming));
101 ASSERT_OK(uv_read_start((uv_stream_t*) &incoming, alloc_cb, read_cb));
102 }
103
start_server(void)104 static void start_server(void) {
105 struct sockaddr_in addr;
106
107 ASSERT_OK(uv_ip4_addr("0.0.0.0", TEST_PORT, &addr));
108
109 ASSERT_OK(uv_tcp_init(uv_default_loop(), &server));
110 ASSERT_OK(uv_tcp_bind(&server, (struct sockaddr*) &addr, 0));
111 ASSERT_OK(uv_listen((uv_stream_t*) &server, 128, connection_cb));
112 }
113
TEST_IMPL(tcp_write_in_a_row)114 TEST_IMPL(tcp_write_in_a_row) {
115 #if defined(_WIN32)
116 RETURN_SKIP("tcp_write_in_a_row does not work on Windows");
117 #elif defined(__PASE__)
118 RETURN_SKIP("tcp_write_in_a_row does not work on IBM i PASE");
119 #else
120 uv_connect_t connect_req;
121 struct sockaddr_in addr;
122
123 start_server();
124
125 ASSERT_OK(uv_ip4_addr("127.0.0.1", TEST_PORT, &addr));
126
127 ASSERT_OK(uv_tcp_init(uv_default_loop(), &client));
128 ASSERT_OK(uv_tcp_connect(&connect_req,
129 &client,
130 (struct sockaddr*) &addr,
131 connect_cb));
132
133 ASSERT_OK(uv_run(uv_default_loop(), UV_RUN_DEFAULT));
134
135 ASSERT_EQ(1, connect_cb_called);
136 ASSERT_EQ(3, close_cb_called);
137 ASSERT_EQ(1, connection_cb_called);
138 ASSERT_EQ(2, write_cb_called);
139
140 MAKE_VALGRIND_HAPPY(uv_default_loop());
141 return 0;
142 #endif
143 }
144
