nuttx-apps/examples/usrsocktest/usrsocktest_noblock_recv.c
2020-08-06 20:52:09 +09:00

530 lines
18 KiB
C

/****************************************************************************
* examples/usrsocktest/usrsocktest_noblock_recv.c
* Receive from the socket in non-blocking mode
*
* Copyright (C) 2015, 2017 Haltian Ltd. All rights reserved.
* Authors: Roman Saveljev <roman.saveljev@haltian.com>
* Jussi Kivilinna <jussi.kivilinna@haltian.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <sys/socket.h>
#include <errno.h>
#include <sys/types.h>
#include <stdbool.h>
#include <assert.h>
#include <fcntl.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include "defines.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Private Types
****************************************************************************/
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
static bool started;
static int sd;
/****************************************************************************
* Public Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: receive
*
* Description:
* Non-blocking & instant connect+recv
*
* Input Parameters:
* dconf - socket daemon configuration
*
* Returned Value:
* None
*
* Assumptions/Limitations:
* None
*
****************************************************************************/
static void receive(struct usrsocktest_daemon_conf_s *dconf)
{
int flags;
int count;
ssize_t ret;
size_t datalen;
void *data;
struct sockaddr_in addr;
char databuf[4];
struct sockaddr_in remoteaddr;
socklen_t addrlen;
/* Start test daemon. */
dconf->endpoint_addr = "127.0.0.1";
dconf->endpoint_port = 255;
dconf->endpoint_recv_avail_from_start = true;
dconf->endpoint_recv_avail = 7;
TEST_ASSERT_EQUAL(OK, usrsocktest_daemon_start(dconf));
started = true;
TEST_ASSERT_EQUAL(0, usrsocktest_daemon_get_num_active_sockets());
/* Open socket */
sd = socket(AF_INET, SOCK_STREAM, 0);
TEST_ASSERT_TRUE(sd >= 0);
TEST_ASSERT_EQUAL(1, usrsocktest_daemon_get_num_active_sockets());
TEST_ASSERT_EQUAL(0, usrsocktest_daemon_get_num_connected_sockets());
TEST_ASSERT_EQUAL(0, usrsocktest_daemon_get_num_waiting_connect_sockets());
/* Make socket non-blocking */
flags = fcntl(sd, F_GETFL, 0);
TEST_ASSERT_TRUE(flags >= 0);
TEST_ASSERT_EQUAL(O_RDWR, flags & O_RDWR);
TEST_ASSERT_EQUAL(0, flags & O_NONBLOCK);
ret = fcntl(sd, F_SETFL, flags | O_NONBLOCK);
TEST_ASSERT_EQUAL(0, ret);
flags = fcntl(sd, F_GETFL, 0);
TEST_ASSERT_TRUE(flags >= 0);
TEST_ASSERT_EQUAL(O_RDWR, flags & O_RDWR);
TEST_ASSERT_EQUAL(O_NONBLOCK, flags & O_NONBLOCK);
/* Do connect, should succeed instantly. */
inet_pton(AF_INET, "127.0.0.1", &addr.sin_addr.s_addr);
addr.sin_family = AF_INET;
addr.sin_port = htons(255);
ret = connect(sd, (FAR const struct sockaddr *)&addr, sizeof(addr));
if (!dconf->delay_all_responses)
{
TEST_ASSERT_EQUAL(0, ret);
TEST_ASSERT_EQUAL(1, usrsocktest_daemon_get_num_active_sockets());
TEST_ASSERT_EQUAL(1, usrsocktest_daemon_get_num_connected_sockets());
TEST_ASSERT_EQUAL(0,
usrsocktest_daemon_get_num_waiting_connect_sockets());
TEST_ASSERT_EQUAL(0, usrsocktest_daemon_get_num_recv_empty_sockets());
}
else
{
TEST_ASSERT_EQUAL(-1, ret);
TEST_ASSERT_EQUAL(EINPROGRESS, errno);
TEST_ASSERT_EQUAL(1, usrsocktest_daemon_get_num_active_sockets());
TEST_ASSERT_EQUAL(0, usrsocktest_daemon_get_num_connected_sockets());
TEST_ASSERT_EQUAL(0,
usrsocktest_daemon_get_num_waiting_connect_sockets());
for (count = 0; usrsocktest_daemon_get_num_connected_sockets() != 1;
count++)
{
TEST_ASSERT_TRUE(count <= 3);
usleep(25 * 1000);
}
ret = connect(sd, (FAR const struct sockaddr *)&addr, sizeof(addr));
TEST_ASSERT_EQUAL(-1, ret);
TEST_ASSERT_EQUAL(EISCONN, errno);
TEST_ASSERT_EQUAL(1, usrsocktest_daemon_get_num_active_sockets());
TEST_ASSERT_EQUAL(1, usrsocktest_daemon_get_num_connected_sockets());
TEST_ASSERT_EQUAL(0, usrsocktest_daemon_get_num_recv_empty_sockets());
}
/* Receive data from remote, daemon returns 4 bytes. */
data = databuf;
datalen = sizeof(databuf);
ret = recvfrom(sd, data, datalen, 0, NULL, NULL);
TEST_ASSERT_EQUAL(datalen, ret);
TEST_ASSERT_EQUAL(4, datalen);
TEST_ASSERT_EQUAL_UINT8_ARRAY("abcd", data, 4);
TEST_ASSERT_EQUAL(1, usrsocktest_daemon_get_num_connected_sockets());
TEST_ASSERT_EQUAL(1, usrsocktest_daemon_get_num_active_sockets());
TEST_ASSERT_EQUAL(4, usrsocktest_daemon_get_recv_bytes());
TEST_ASSERT_EQUAL(0, usrsocktest_daemon_get_num_recv_empty_sockets());
/* Receive data from remote with address, daemon returns 3 bytes. */
addrlen = sizeof(remoteaddr);
ret = recvfrom(sd, data, datalen, 0, (FAR struct sockaddr *)&remoteaddr,
&addrlen);
TEST_ASSERT_EQUAL(3, ret);
TEST_ASSERT_EQUAL_UINT8_ARRAY("abc", data, 3);
TEST_ASSERT_EQUAL(addrlen, sizeof(remoteaddr));
TEST_ASSERT_EQUAL_UINT8_ARRAY(&remoteaddr, &addr, addrlen);
TEST_ASSERT_EQUAL(1, usrsocktest_daemon_get_num_connected_sockets());
TEST_ASSERT_EQUAL(1, usrsocktest_daemon_get_num_active_sockets());
TEST_ASSERT_EQUAL(datalen + ret, usrsocktest_daemon_get_recv_bytes());
TEST_ASSERT_EQUAL(1, usrsocktest_daemon_get_num_recv_empty_sockets());
/* Receive data from remote, daemon has 0 bytes buffered => -EAGAIN */
data = databuf;
datalen = sizeof(databuf);
ret = recvfrom(sd, data, datalen, 0, NULL, NULL);
TEST_ASSERT_EQUAL(-1, ret);
TEST_ASSERT_EQUAL(EAGAIN, errno);
TEST_ASSERT_EQUAL(1, usrsocktest_daemon_get_num_connected_sockets());
TEST_ASSERT_EQUAL(1, usrsocktest_daemon_get_num_active_sockets());
TEST_ASSERT_EQUAL(7, usrsocktest_daemon_get_recv_bytes());
TEST_ASSERT_EQUAL(1, usrsocktest_daemon_get_num_recv_empty_sockets());
/* Receive data from remote, daemon has 0 bytes buffered => -EAGAIN */
data = databuf;
datalen = sizeof(databuf);
ret = read(sd, data, datalen);
TEST_ASSERT_EQUAL(-1, ret);
TEST_ASSERT_EQUAL(EAGAIN, errno);
TEST_ASSERT_EQUAL(1, usrsocktest_daemon_get_num_connected_sockets());
TEST_ASSERT_EQUAL(1, usrsocktest_daemon_get_num_active_sockets());
TEST_ASSERT_EQUAL(7, usrsocktest_daemon_get_recv_bytes());
TEST_ASSERT_EQUAL(1, usrsocktest_daemon_get_num_recv_empty_sockets());
/* Reset recv buffer for open sockets */
TEST_ASSERT_TRUE(usrsocktest_send_delayed_command('r', 0));
for (count = 0;
usrsocktest_daemon_get_num_recv_empty_sockets() > 0; count++)
{
TEST_ASSERT_TRUE(count <= 5);
usleep(5 * 1000);
}
TEST_ASSERT_EQUAL(0, usrsocktest_daemon_get_num_recv_empty_sockets());
/* Receive data from remote, daemon returns 4 bytes. */
data = databuf;
datalen = sizeof(databuf);
ret = recvfrom(sd, data, datalen, 0, NULL, NULL);
TEST_ASSERT_EQUAL(datalen, ret);
TEST_ASSERT_EQUAL(4, datalen);
TEST_ASSERT_EQUAL_UINT8_ARRAY("abcd", data, 4);
TEST_ASSERT_EQUAL(1, usrsocktest_daemon_get_num_connected_sockets());
TEST_ASSERT_EQUAL(1, usrsocktest_daemon_get_num_active_sockets());
TEST_ASSERT_EQUAL(7 + 4, usrsocktest_daemon_get_recv_bytes());
TEST_ASSERT_EQUAL(0, usrsocktest_daemon_get_num_recv_empty_sockets());
/* Close socket */
TEST_ASSERT_TRUE(close(sd) >= 0);
sd = -1;
TEST_ASSERT_EQUAL(0, usrsocktest_daemon_get_num_active_sockets());
TEST_ASSERT_EQUAL(0, usrsocktest_daemon_get_num_connected_sockets());
TEST_ASSERT_EQUAL(7 + 4, usrsocktest_daemon_get_recv_bytes());
TEST_ASSERT_EQUAL(0, usrsocktest_daemon_get_num_recv_empty_sockets());
/* Stopping daemon should succeed. */
TEST_ASSERT_EQUAL(OK, usrsocktest_daemon_stop());
started = false;
TEST_ASSERT_EQUAL(-ENODEV, usrsocktest_daemon_get_num_active_sockets());
TEST_ASSERT_EQUAL(-ENODEV, usrsocktest_daemon_get_num_connected_sockets());
TEST_ASSERT_EQUAL(0, usrsocktest_endp_malloc_cnt);
TEST_ASSERT_EQUAL(0, usrsocktest_dcmd_malloc_cnt);
}
/****************************************************************************
* Name: delayed_connect
*
* Description:
* Non-blocking & delayed connect
*
* Input Parameters:
* dconf - socket daemon configuration
*
* Returned Value:
* None
*
* Assumptions/Limitations:
* None
*
****************************************************************************/
static void delayed_connect(struct usrsocktest_daemon_conf_s *dconf)
{
int flags;
int count;
ssize_t ret;
size_t datalen;
void *data;
struct sockaddr_in addr;
char databuf[4];
struct sockaddr_in remoteaddr;
socklen_t addrlen;
/* Start test daemon. */
dconf->endpoint_block_connect = true;
dconf->endpoint_recv_avail_from_start = false;
dconf->endpoint_recv_avail = 4;
dconf->endpoint_addr = "127.0.0.1";
dconf->endpoint_port = 255;
TEST_ASSERT_EQUAL(OK, usrsocktest_daemon_start(dconf));
started = true;
TEST_ASSERT_EQUAL(0, usrsocktest_daemon_get_num_active_sockets());
/* Open socket */
sd = socket(AF_INET, SOCK_STREAM, 0);
TEST_ASSERT_TRUE(sd >= 0);
TEST_ASSERT_EQUAL(1, usrsocktest_daemon_get_num_active_sockets());
TEST_ASSERT_EQUAL(0, usrsocktest_daemon_get_num_connected_sockets());
TEST_ASSERT_EQUAL(0, usrsocktest_daemon_get_num_waiting_connect_sockets());
/* Make socket non-blocking */
flags = fcntl(sd, F_GETFL, 0);
TEST_ASSERT_TRUE(flags >= 0);
TEST_ASSERT_EQUAL(O_RDWR, flags & O_RDWR);
TEST_ASSERT_EQUAL(0, flags & O_NONBLOCK);
ret = fcntl(sd, F_SETFL, flags | O_NONBLOCK);
TEST_ASSERT_EQUAL(0, ret);
flags = fcntl(sd, F_GETFL, 0);
TEST_ASSERT_TRUE(flags >= 0);
TEST_ASSERT_EQUAL(O_RDWR, flags & O_RDWR);
TEST_ASSERT_EQUAL(O_NONBLOCK, flags & O_NONBLOCK);
/* Launch connect attempt, daemon delays actual connection until
* triggered.
*/
inet_pton(AF_INET, "127.0.0.1", &addr.sin_addr.s_addr);
addr.sin_family = AF_INET;
addr.sin_port = htons(255);
ret = connect(sd, (FAR const struct sockaddr *)&addr, sizeof(addr));
TEST_ASSERT_EQUAL(-1, ret);
TEST_ASSERT_EQUAL(EINPROGRESS, errno);
TEST_ASSERT_EQUAL(1, usrsocktest_daemon_get_num_active_sockets());
TEST_ASSERT_EQUAL(0, usrsocktest_daemon_get_num_connected_sockets());
TEST_ASSERT_EQUAL(1, usrsocktest_daemon_get_num_waiting_connect_sockets());
/* Try receive data, not connected yet. */
data = databuf;
datalen = sizeof(databuf);
ret = read(sd, data, datalen);
TEST_ASSERT_EQUAL(-1, ret);
TEST_ASSERT_EQUAL(EAGAIN, errno);
TEST_ASSERT_EQUAL(1, usrsocktest_daemon_get_num_active_sockets());
TEST_ASSERT_EQUAL(0, usrsocktest_daemon_get_num_connected_sockets());
TEST_ASSERT_EQUAL(1, usrsocktest_daemon_get_num_waiting_connect_sockets());
TEST_ASSERT_EQUAL(0, usrsocktest_daemon_get_send_bytes());
/* Release delayed connect. */
TEST_ASSERT_TRUE(usrsocktest_daemon_establish_waiting_connections());
for (count = 0; usrsocktest_daemon_get_num_waiting_connect_sockets() > 0;
count++)
{
TEST_ASSERT_TRUE(count <= 5);
usleep(10 * 1000);
}
TEST_ASSERT_EQUAL(1, usrsocktest_daemon_get_num_active_sockets());
TEST_ASSERT_EQUAL(1, usrsocktest_daemon_get_num_connected_sockets());
TEST_ASSERT_EQUAL(0, usrsocktest_daemon_get_num_waiting_connect_sockets());
TEST_ASSERT_EQUAL(1, usrsocktest_daemon_get_num_recv_empty_sockets());
/* Try receive data, not received data yet. */
data = databuf;
datalen = sizeof(databuf);
addrlen = sizeof(remoteaddr);
ret = recvfrom(sd, data, datalen, 0, (FAR struct sockaddr *)&remoteaddr,
&addrlen);
TEST_ASSERT_EQUAL(-1, ret);
TEST_ASSERT_EQUAL(EAGAIN, errno);
TEST_ASSERT_EQUAL(0, addrlen);
TEST_ASSERT_EQUAL(1, usrsocktest_daemon_get_num_connected_sockets());
TEST_ASSERT_EQUAL(1, usrsocktest_daemon_get_num_active_sockets());
TEST_ASSERT_EQUAL(0, usrsocktest_daemon_get_send_bytes());
TEST_ASSERT_EQUAL(1, usrsocktest_daemon_get_num_recv_empty_sockets());
/* Reset recv buffer for open sockets */
TEST_ASSERT_TRUE(usrsocktest_send_delayed_command('r', 0));
for (count = 0;
usrsocktest_daemon_get_num_recv_empty_sockets() > 0; count++)
{
TEST_ASSERT_TRUE(count <= 5);
usleep(5 * 1000);
}
/* Receive data from remote, daemon returns 4 bytes. */
data = databuf;
datalen = sizeof(databuf);
ret = recvfrom(sd, data, datalen, 0, NULL, NULL);
TEST_ASSERT_EQUAL(datalen, ret);
TEST_ASSERT_EQUAL(4, datalen);
TEST_ASSERT_EQUAL_UINT8_ARRAY("abcd", data, 4);
TEST_ASSERT_EQUAL(1, usrsocktest_daemon_get_num_connected_sockets());
TEST_ASSERT_EQUAL(1, usrsocktest_daemon_get_num_active_sockets());
TEST_ASSERT_EQUAL(4, usrsocktest_daemon_get_recv_bytes());
TEST_ASSERT_EQUAL(1, usrsocktest_daemon_get_num_recv_empty_sockets());
/* Close socket. */
TEST_ASSERT_TRUE(close(sd) >= 0);
sd = -1;
TEST_ASSERT_EQUAL(0, usrsocktest_daemon_get_num_active_sockets());
TEST_ASSERT_EQUAL(0, usrsocktest_daemon_get_num_connected_sockets());
TEST_ASSERT_EQUAL(0, usrsocktest_daemon_get_num_waiting_connect_sockets());
TEST_ASSERT_EQUAL(0, usrsocktest_daemon_get_num_recv_empty_sockets());
/* Stopping daemon should succeed. */
TEST_ASSERT_EQUAL(OK, usrsocktest_daemon_stop());
started = false;
TEST_ASSERT_EQUAL(-ENODEV, usrsocktest_daemon_get_num_active_sockets());
TEST_ASSERT_EQUAL(-ENODEV, usrsocktest_daemon_get_num_connected_sockets());
TEST_ASSERT_EQUAL(-ENODEV,
usrsocktest_daemon_get_num_waiting_connect_sockets());
TEST_ASSERT_EQUAL(-ENODEV,
usrsocktest_daemon_get_num_recv_empty_sockets());
TEST_ASSERT_EQUAL(0, usrsocktest_endp_malloc_cnt);
TEST_ASSERT_EQUAL(0, usrsocktest_dcmd_malloc_cnt);
}
/****************************************************************************
* Name: no_block_recv test group setup
*
* Description:
* Setup function executed before each testcase in this test group
*
* Input Parameters:
* None
*
* Returned Value:
* None
*
* Assumptions/Limitations:
* None
*
****************************************************************************/
TEST_SETUP(no_block_recv)
{
sd = -1;
started = false;
}
/****************************************************************************
* Name: no_block_recv test group teardown
*
* Description:
* Setup function executed after each testcase in this test group
*
* Input Parameters:
* None
*
* Returned Value:
* None
*
* Assumptions/Limitations:
* None
*
****************************************************************************/
TEST_TEAR_DOWN(no_block_recv)
{
int ret;
if (sd >= 0)
{
ret = close(sd);
assert(ret >= 0);
}
if (started)
{
ret = usrsocktest_daemon_stop();
assert(ret == OK);
}
}
TEST(no_block_recv, receive)
{
usrsocktest_daemon_config = usrsocktest_daemon_defconf;
receive(&usrsocktest_daemon_config);
}
TEST(no_block_recv, receive_delay)
{
usrsocktest_daemon_config = usrsocktest_daemon_defconf;
usrsocktest_daemon_config.delay_all_responses = true;
receive(&usrsocktest_daemon_config);
}
TEST(no_block_recv, delayed_connect)
{
usrsocktest_daemon_config = usrsocktest_daemon_defconf;
delayed_connect(&usrsocktest_daemon_config);
}
TEST(no_block_recv, delayed_connect_delay)
{
usrsocktest_daemon_config = usrsocktest_daemon_defconf;
usrsocktest_daemon_config.delay_all_responses = true;
delayed_connect(&usrsocktest_daemon_config);
}
/****************************************************************************
* Public Functions
****************************************************************************/
TEST_GROUP(no_block_recv)
{
RUN_TEST_CASE(no_block_recv, receive);
RUN_TEST_CASE(no_block_recv, receive_delay);
RUN_TEST_CASE(no_block_recv, delayed_connect);
RUN_TEST_CASE(no_block_recv, delayed_connect_delay);
}