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monero/tests/net_load_tests/clt.cpp
Riccardo Spagni 5ccd3d32b4
Merge pull request #4489 
00901e9c epee: initialize a few data members where it seems to be appropriate (moneromooo-monero)
144a6c32 abstract_tcp_server2: move m_period to subclass (moneromooo-monero)
758d7684 connection_basic: remove unused floating time start time (moneromooo-monero)
e5108a29 Catch more exceptions in dtors (moneromooo-monero)
2018-10-15 13:37:18 +02:00

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// Copyright (c) 2014-2018, The Monero Project
//
// All rights reserved.
//
// 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 of the copyright holder 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 HOLDER 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.
//
// Parts of this file are originally copyright (c) 2012-2013 The Cryptonote developers
#include <atomic>
#include <chrono>
#include <functional>
#include <numeric>
#include <boost/thread/thread.hpp>
#include <vector>
#include "gtest/gtest.h"
#include "include_base_utils.h"
#include "misc_language.h"
#include "misc_log_ex.h"
#include "storages/levin_abstract_invoke2.h"
#include "common/util.h"
#include "net_load_tests.h"
using namespace net_load_tests;
namespace
{
const size_t CONNECTION_COUNT = 100000;
const size_t CONNECTION_TIMEOUT = 10000;
const size_t DEFAULT_OPERATION_TIMEOUT = 30000;
const size_t RESERVED_CONN_CNT = 1;
template<typename t_predicate>
bool busy_wait_for(size_t timeout_ms, const t_predicate& predicate, size_t sleep_ms = 10)
{
for (size_t i = 0; i < timeout_ms / sleep_ms; ++i)
{
if (predicate())
return true;
//std::this_thread::sleep_for(std::chrono::milliseconds(sleep_ms));
epee::misc_utils::sleep_no_w(static_cast<long>(sleep_ms));
}
return false;
}
class t_connection_opener_1
{
public:
t_connection_opener_1(test_tcp_server& tcp_server, size_t open_request_target)
: m_tcp_server(tcp_server)
, m_open_request_target(open_request_target)
, m_next_id(0)
, m_error_count(0)
, m_connections(open_request_target)
{
for (auto& conn_id : m_connections)
conn_id = boost::uuids::nil_uuid();
}
bool open()
{
size_t id = m_next_id.fetch_add(1, std::memory_order_relaxed);
if (m_open_request_target <= id)
return false;
bool r = m_tcp_server.connect_async("127.0.0.1", srv_port, CONNECTION_TIMEOUT, [=](const test_connection_context& context, const boost::system::error_code& ec) {
if (!ec)
{
m_connections[id] = context.m_connection_id;
}
else
{
m_error_count.fetch_add(1, std::memory_order_relaxed);
}
});
if (!r)
{
m_error_count.fetch_add(1, std::memory_order_relaxed);
}
return true;
}
bool close(size_t id)
{
if (!m_connections[id].is_nil())
{
m_tcp_server.get_config_object().close(m_connections[id]);
return true;
}
else
{
return false;
}
}
size_t error_count() const { return m_error_count.load(std::memory_order_relaxed); }
private:
test_tcp_server& m_tcp_server;
size_t m_open_request_target;
std::atomic<size_t> m_next_id;
std::atomic<size_t> m_error_count;
std::vector<boost::uuids::uuid> m_connections;
};
class t_connection_opener_2
{
public:
t_connection_opener_2(test_tcp_server& tcp_server, size_t open_request_target, size_t max_opened_connection_count)
: m_tcp_server(tcp_server)
, m_open_request_target(open_request_target)
, m_open_request_count(0)
, m_error_count(0)
, m_open_close_test_helper(tcp_server, open_request_target, max_opened_connection_count)
{
}
bool open_and_close()
{
size_t req_count = m_open_request_count.fetch_add(1, std::memory_order_relaxed);
if (m_open_request_target <= req_count)
return false;
bool r = m_tcp_server.connect_async("127.0.0.1", srv_port, CONNECTION_TIMEOUT, [=](const test_connection_context& context, const boost::system::error_code& ec) {
if (!ec)
{
m_open_close_test_helper.handle_new_connection(context.m_connection_id);
}
else
{
m_error_count.fetch_add(1, std::memory_order_relaxed);
}
});
if (!r)
{
m_error_count.fetch_add(1, std::memory_order_relaxed);
}
return true;
}
void close_remaining_connections()
{
m_open_close_test_helper.close_remaining_connections();
}
size_t opened_connection_count() const { return m_open_close_test_helper.opened_connection_count(); }
size_t error_count() const { return m_error_count.load(std::memory_order_relaxed); }
private:
test_tcp_server& m_tcp_server;
size_t m_open_request_target;
std::atomic<size_t> m_open_request_count;
std::atomic<size_t> m_error_count;
open_close_test_helper m_open_close_test_helper;
};
class net_load_test_clt : public ::testing::Test
{
public:
net_load_test_clt()
: m_tcp_server(epee::net_utils::e_connection_type_RPC) // RPC disables network limit for unit tests
{
}
protected:
virtual void SetUp()
{
m_thread_count = (std::max)(min_thread_count, boost::thread::hardware_concurrency() / 2);
m_tcp_server.get_config_object().set_handler(&m_commands_handler);
m_tcp_server.get_config_object().m_invoke_timeout = CONNECTION_TIMEOUT;
ASSERT_TRUE(m_tcp_server.init_server(clt_port, "127.0.0.1"));
ASSERT_TRUE(m_tcp_server.run_server(m_thread_count, false));
// Connect to server
std::atomic<int> conn_status(0);
m_cmd_conn_id = boost::uuids::nil_uuid();
ASSERT_TRUE(m_tcp_server.connect_async("127.0.0.1", srv_port, CONNECTION_TIMEOUT, [&](const test_connection_context& context, const boost::system::error_code& ec) {
if (!ec)
{
m_cmd_conn_id = context.m_connection_id;
}
else
{
LOG_ERROR("Connection error: " << ec.message());
}
conn_status.store(1, std::memory_order_seq_cst);
}));
EXPECT_TRUE(busy_wait_for(DEFAULT_OPERATION_TIMEOUT, [&]{ return 0 != conn_status.load(std::memory_order_seq_cst); })) << "connect_async timed out";
ASSERT_EQ(1, conn_status.load(std::memory_order_seq_cst));
ASSERT_FALSE(m_cmd_conn_id.is_nil());
conn_status.store(0, std::memory_order_seq_cst);
CMD_RESET_STATISTICS::request req;
ASSERT_TRUE(epee::net_utils::async_invoke_remote_command2<CMD_RESET_STATISTICS::response>(m_cmd_conn_id, CMD_RESET_STATISTICS::ID, req,
m_tcp_server.get_config_object(), [&](int code, const CMD_RESET_STATISTICS::response& rsp, const test_connection_context&) {
conn_status.store(code, std::memory_order_seq_cst);
}));
EXPECT_TRUE(busy_wait_for(DEFAULT_OPERATION_TIMEOUT, [&]{ return 0 != conn_status.load(std::memory_order_seq_cst); })) << "reset statistics timed out";
ASSERT_LT(0, conn_status.load(std::memory_order_seq_cst));
}
virtual void TearDown()
{
m_tcp_server.send_stop_signal();
ASSERT_TRUE(m_tcp_server.timed_wait_server_stop(DEFAULT_OPERATION_TIMEOUT));
}
static void TearDownTestCase()
{
// Stop server
test_levin_commands_handler *commands_handler_ptr = new test_levin_commands_handler();
test_levin_commands_handler &commands_handler = *commands_handler_ptr;
test_tcp_server tcp_server(epee::net_utils::e_connection_type_RPC);
tcp_server.get_config_object().set_handler(commands_handler_ptr, [](epee::levin::levin_commands_handler<test_connection_context> *handler)->void { delete handler; });
tcp_server.get_config_object().m_invoke_timeout = CONNECTION_TIMEOUT;
if (!tcp_server.init_server(clt_port, "127.0.0.1")) return;
if (!tcp_server.run_server(2, false)) return;
// Connect to server and invoke shutdown command
std::atomic<int> conn_status(0);
boost::uuids::uuid cmd_conn_id = boost::uuids::nil_uuid();
tcp_server.connect_async("127.0.0.1", srv_port, CONNECTION_TIMEOUT, [&](const test_connection_context& context, const boost::system::error_code& ec) {
cmd_conn_id = context.m_connection_id;
conn_status.store(!ec ? 1 : -1, std::memory_order_seq_cst);
});
if (!busy_wait_for(DEFAULT_OPERATION_TIMEOUT, [&]{ return 0 != conn_status.load(std::memory_order_seq_cst); })) return;
if (1 != conn_status.load(std::memory_order_seq_cst)) return;
epee::net_utils::notify_remote_command2(cmd_conn_id, CMD_SHUTDOWN::ID, CMD_SHUTDOWN::request(), tcp_server.get_config_object());
busy_wait_for(DEFAULT_OPERATION_TIMEOUT, [&]{ return 0 != commands_handler.close_connection_counter(); });
}
template<typename Func>
static auto call_func(size_t /*thread_index*/, const Func& func, int) -> decltype(func())
{
func();
}
template<typename Func>
static auto call_func(size_t thread_index, const Func& func, long) -> decltype(func(thread_index))
{
func(thread_index);
}
template<typename Func>
void parallel_exec(const Func& func)
{
unit_test::call_counter properly_finished_threads;
std::vector<boost::thread> threads(m_thread_count);
for (size_t i = 0; i < threads.size(); ++i)
{
threads[i] = boost::thread([&, i] {
call_func(i, func, 0);
properly_finished_threads.inc();
});
}
for (auto& th : threads)
th.join();
ASSERT_EQ(properly_finished_threads.get(), m_thread_count);
}
void get_server_statistics(CMD_GET_STATISTICS::response& statistics)
{
std::atomic<int> req_status(0);
CMD_GET_STATISTICS::request req;
ASSERT_TRUE(epee::net_utils::async_invoke_remote_command2<CMD_GET_STATISTICS::response>(m_cmd_conn_id, CMD_GET_STATISTICS::ID, req,
m_tcp_server.get_config_object(), [&](int code, const CMD_GET_STATISTICS::response& rsp, const test_connection_context&) {
if (0 < code)
{
statistics = rsp;
}
else
{
LOG_ERROR("Get server statistics error: " << code);
}
req_status.store(0 < code ? 1 : -1, std::memory_order_seq_cst);
}));
EXPECT_TRUE(busy_wait_for(DEFAULT_OPERATION_TIMEOUT, [&]{ return 0 != req_status.load(std::memory_order_seq_cst); })) << "get_server_statistics timed out";
ASSERT_EQ(1, req_status.load(std::memory_order_seq_cst));
}
template <typename t_predicate>
bool busy_wait_for_server_statistics(CMD_GET_STATISTICS::response& statistics, const t_predicate& predicate)
{
for (size_t i = 0; i < 30; ++i)
{
get_server_statistics(statistics);
if (predicate(statistics))
{
return true;
}
//std::this_thread::sleep_for(std::chrono::seconds(1));
epee::misc_utils::sleep_no_w(1000);
}
return false;
}
void ask_for_data_requests(size_t request_size = 0)
{
CMD_SEND_DATA_REQUESTS::request req;
req.request_size = request_size;
epee::net_utils::notify_remote_command2(m_cmd_conn_id, CMD_SEND_DATA_REQUESTS::ID, req, m_tcp_server.get_config_object());
}
protected:
test_tcp_server m_tcp_server;
test_levin_commands_handler m_commands_handler;
size_t m_thread_count;
boost::uuids::uuid m_cmd_conn_id;
};
}
TEST_F(net_load_test_clt, a_lot_of_client_connections_and_connections_closed_by_client)
{
// Open connections
t_connection_opener_1 connection_opener(m_tcp_server, CONNECTION_COUNT);
parallel_exec([&] {
while (connection_opener.open());
});
// Wait for all open requests to complete
EXPECT_TRUE(busy_wait_for(DEFAULT_OPERATION_TIMEOUT, [&]{ return CONNECTION_COUNT + RESERVED_CONN_CNT <= m_commands_handler.new_connection_counter() + connection_opener.error_count(); }));
LOG_PRINT_L0("number of opened connections / fails (total): " << m_commands_handler.new_connection_counter() <<
" / " << connection_opener.error_count() << " (" << (m_commands_handler.new_connection_counter() + connection_opener.error_count()) << ")");
// Check
ASSERT_GT(m_commands_handler.new_connection_counter(), RESERVED_CONN_CNT);
ASSERT_EQ(m_commands_handler.new_connection_counter() + connection_opener.error_count(), CONNECTION_COUNT + RESERVED_CONN_CNT);
ASSERT_EQ(m_commands_handler.new_connection_counter() - m_commands_handler.close_connection_counter(), m_tcp_server.get_config_object().get_connections_count());
// Close connections
parallel_exec([&](size_t thread_idx) {
for (size_t i = thread_idx; i < CONNECTION_COUNT; i += m_thread_count)
{
connection_opener.close(i);
}
});
// Wait for all opened connections to close
EXPECT_TRUE(busy_wait_for(DEFAULT_OPERATION_TIMEOUT, [&]{ return m_commands_handler.new_connection_counter() - RESERVED_CONN_CNT <= m_commands_handler.close_connection_counter(); }));
LOG_PRINT_L0("number of opened / closed connections: " << m_tcp_server.get_config_object().get_connections_count() <<
" / " << m_commands_handler.close_connection_counter());
// Check all connections are closed
ASSERT_EQ(m_commands_handler.new_connection_counter() - RESERVED_CONN_CNT, m_commands_handler.close_connection_counter());
ASSERT_EQ(RESERVED_CONN_CNT, m_tcp_server.get_config_object().get_connections_count());
// Wait for server to handle all open and close requests
CMD_GET_STATISTICS::response srv_stat;
busy_wait_for_server_statistics(srv_stat, [](const CMD_GET_STATISTICS::response& stat) { return stat.new_connection_counter - RESERVED_CONN_CNT <= stat.close_connection_counter; });
LOG_PRINT_L0("server statistics: " << srv_stat.to_string());
// Check server status
// It's OK, if server didn't close all opened connections, because of it could receive not all FIN packets
ASSERT_LE(srv_stat.close_connection_counter, srv_stat.new_connection_counter - RESERVED_CONN_CNT);
ASSERT_LE(RESERVED_CONN_CNT, srv_stat.opened_connections_count);
// Request data from server, it causes to close rest connections
ask_for_data_requests();
// Wait for server to close rest connections
busy_wait_for_server_statistics(srv_stat, [](const CMD_GET_STATISTICS::response& stat) { return stat.new_connection_counter - RESERVED_CONN_CNT <= stat.close_connection_counter; });
LOG_PRINT_L0("server statistics: " << srv_stat.to_string());
// Check server status. All connections should be closed
ASSERT_EQ(srv_stat.close_connection_counter, srv_stat.new_connection_counter - RESERVED_CONN_CNT);
ASSERT_EQ(RESERVED_CONN_CNT, srv_stat.opened_connections_count);
}
TEST_F(net_load_test_clt, a_lot_of_client_connections_and_connections_closed_by_server)
{
// Open connections
t_connection_opener_1 connection_opener(m_tcp_server, CONNECTION_COUNT);
parallel_exec([&] {
while (connection_opener.open());
});
// Wait for all open requests to complete
EXPECT_TRUE(busy_wait_for(DEFAULT_OPERATION_TIMEOUT, [&](){ return CONNECTION_COUNT + RESERVED_CONN_CNT <= m_commands_handler.new_connection_counter() + connection_opener.error_count(); }));
LOG_PRINT_L0("number of opened connections / fails (total): " << m_commands_handler.new_connection_counter() <<
" / " << connection_opener.error_count() << " (" << (m_commands_handler.new_connection_counter() + connection_opener.error_count()) << ")");
// Check
ASSERT_GT(m_commands_handler.new_connection_counter(), RESERVED_CONN_CNT);
ASSERT_EQ(m_commands_handler.new_connection_counter() + connection_opener.error_count(), CONNECTION_COUNT + RESERVED_CONN_CNT);
ASSERT_EQ(m_commands_handler.new_connection_counter() - m_commands_handler.close_connection_counter(), m_tcp_server.get_config_object().get_connections_count());
// Wait for server accepts all connections
CMD_GET_STATISTICS::response srv_stat;
int last_new_connection_counter = -1;
busy_wait_for_server_statistics(srv_stat, [&last_new_connection_counter](const CMD_GET_STATISTICS::response& stat) {
if (last_new_connection_counter == static_cast<int>(stat.new_connection_counter)) return true;
else { last_new_connection_counter = static_cast<int>(stat.new_connection_counter); return false; }
});
// Close connections
CMD_CLOSE_ALL_CONNECTIONS::request req;
ASSERT_TRUE(epee::net_utils::notify_remote_command2(m_cmd_conn_id, CMD_CLOSE_ALL_CONNECTIONS::ID, req, m_tcp_server.get_config_object()));
// Wait for all opened connections to close
busy_wait_for(DEFAULT_OPERATION_TIMEOUT, [&](){ return m_commands_handler.new_connection_counter() - RESERVED_CONN_CNT <= m_commands_handler.close_connection_counter(); });
LOG_PRINT_L0("number of opened / closed connections: " << m_tcp_server.get_config_object().get_connections_count() <<
" / " << m_commands_handler.close_connection_counter());
// It's OK, if server didn't close all connections, because it could accept not all our connections
ASSERT_LE(m_commands_handler.close_connection_counter(), m_commands_handler.new_connection_counter() - RESERVED_CONN_CNT);
ASSERT_LE(RESERVED_CONN_CNT, m_tcp_server.get_config_object().get_connections_count());
// Wait for server to handle all open and close requests
busy_wait_for_server_statistics(srv_stat, [](const CMD_GET_STATISTICS::response& stat) { return stat.new_connection_counter - RESERVED_CONN_CNT <= stat.close_connection_counter; });
LOG_PRINT_L0("server statistics: " << srv_stat.to_string());
// Check server status
ASSERT_EQ(srv_stat.close_connection_counter, srv_stat.new_connection_counter - RESERVED_CONN_CNT);
ASSERT_EQ(RESERVED_CONN_CNT, srv_stat.opened_connections_count);
// Close rest connections
m_tcp_server.get_config_object().foreach_connection([&](test_connection_context& ctx) {
if (ctx.m_connection_id != m_cmd_conn_id)
{
CMD_DATA_REQUEST::request req;
bool r = epee::net_utils::async_invoke_remote_command2<CMD_DATA_REQUEST::response>(ctx.m_connection_id, CMD_DATA_REQUEST::ID, req,
m_tcp_server.get_config_object(), [=](int code, const CMD_DATA_REQUEST::response& rsp, const test_connection_context&) {
if (code <= 0)
{
LOG_PRINT_L0("Failed to invoke CMD_DATA_REQUEST. code = " << code);
}
});
if (!r)
LOG_PRINT_L0("Failed to invoke CMD_DATA_REQUEST");
}
return true;
});
// Wait for all opened connections to close
EXPECT_TRUE(busy_wait_for(DEFAULT_OPERATION_TIMEOUT, [&](){ return m_commands_handler.new_connection_counter() - RESERVED_CONN_CNT <= m_commands_handler.close_connection_counter(); }));
LOG_PRINT_L0("number of opened / closed connections: " << m_tcp_server.get_config_object().get_connections_count() <<
" / " << m_commands_handler.close_connection_counter());
// Check
ASSERT_EQ(m_commands_handler.close_connection_counter(), m_commands_handler.new_connection_counter() - RESERVED_CONN_CNT);
ASSERT_EQ(RESERVED_CONN_CNT, m_tcp_server.get_config_object().get_connections_count());
}
TEST_F(net_load_test_clt, permament_open_and_close_and_connections_closed_by_client)
{
static const size_t MAX_OPENED_CONN_COUNT = 100;
// Open/close connections
t_connection_opener_2 connection_opener(m_tcp_server, CONNECTION_COUNT, MAX_OPENED_CONN_COUNT);
parallel_exec([&] {
while (connection_opener.open_and_close());
});
// Wait for all open requests to complete
EXPECT_TRUE(busy_wait_for(DEFAULT_OPERATION_TIMEOUT, [&](){ return CONNECTION_COUNT + RESERVED_CONN_CNT <= m_commands_handler.new_connection_counter() + connection_opener.error_count(); }));
LOG_PRINT_L0("number of opened connections / fails (total): " << m_commands_handler.new_connection_counter() <<
" / " << connection_opener.error_count() << " (" << (m_commands_handler.new_connection_counter() + connection_opener.error_count()) << ")");
// Check
ASSERT_GT(m_commands_handler.new_connection_counter(), RESERVED_CONN_CNT);
ASSERT_EQ(m_commands_handler.new_connection_counter() + connection_opener.error_count(), CONNECTION_COUNT + RESERVED_CONN_CNT);
// Wait for all close requests to complete
EXPECT_TRUE(busy_wait_for(4 * DEFAULT_OPERATION_TIMEOUT, [&](){ return connection_opener.opened_connection_count() <= MAX_OPENED_CONN_COUNT; }));
LOG_PRINT_L0("actual number of opened connections: " << connection_opener.opened_connection_count());
// Check
ASSERT_EQ(MAX_OPENED_CONN_COUNT, connection_opener.opened_connection_count());
connection_opener.close_remaining_connections();
// Wait for all close requests to complete
EXPECT_TRUE(busy_wait_for(DEFAULT_OPERATION_TIMEOUT, [&](){ return m_commands_handler.new_connection_counter() <= m_commands_handler.close_connection_counter() + RESERVED_CONN_CNT; }));
LOG_PRINT_L0("actual number of opened connections: " << connection_opener.opened_connection_count());
ASSERT_EQ(m_commands_handler.new_connection_counter(), m_commands_handler.close_connection_counter() + RESERVED_CONN_CNT);
ASSERT_EQ(0, connection_opener.opened_connection_count());
ASSERT_EQ(RESERVED_CONN_CNT, m_tcp_server.get_config_object().get_connections_count());
// Wait for server to handle all open and close requests
CMD_GET_STATISTICS::response srv_stat;
busy_wait_for_server_statistics(srv_stat, [](const CMD_GET_STATISTICS::response& stat) { return stat.new_connection_counter - RESERVED_CONN_CNT <= stat.close_connection_counter; });
LOG_PRINT_L0("server statistics: " << srv_stat.to_string());
// Check server status
// It's OK, if server didn't close all opened connections, because of it could receive not all FIN packets
ASSERT_LE(srv_stat.close_connection_counter, srv_stat.new_connection_counter - RESERVED_CONN_CNT);
ASSERT_LE(RESERVED_CONN_CNT, srv_stat.opened_connections_count);
// Request data from server, it causes to close rest connections
ask_for_data_requests();
// Wait for server to close rest connections
busy_wait_for_server_statistics(srv_stat, [](const CMD_GET_STATISTICS::response& stat) { return stat.new_connection_counter - RESERVED_CONN_CNT <= stat.close_connection_counter; });
LOG_PRINT_L0("server statistics: " << srv_stat.to_string());
// Check server status. All connections should be closed
ASSERT_EQ(srv_stat.close_connection_counter, srv_stat.new_connection_counter - RESERVED_CONN_CNT);
ASSERT_EQ(RESERVED_CONN_CNT, srv_stat.opened_connections_count);
}
TEST_F(net_load_test_clt, permament_open_and_close_and_connections_closed_by_server)
{
static const size_t MAX_OPENED_CONN_COUNT = 100;
// Init test
std::atomic<int> test_state(0);
CMD_START_OPEN_CLOSE_TEST::request req_start;
req_start.open_request_target = CONNECTION_COUNT;
req_start.max_opened_conn_count = MAX_OPENED_CONN_COUNT;
ASSERT_TRUE(epee::net_utils::async_invoke_remote_command2<CMD_START_OPEN_CLOSE_TEST::response>(m_cmd_conn_id, CMD_START_OPEN_CLOSE_TEST::ID, req_start,
m_tcp_server.get_config_object(), [&](int code, const CMD_START_OPEN_CLOSE_TEST::response&, const test_connection_context&) {
test_state.store(0 < code ? 1 : -1, std::memory_order_seq_cst);
}));
// Wait for server response
EXPECT_TRUE(busy_wait_for(DEFAULT_OPERATION_TIMEOUT, [&]{ return 1 == test_state.load(std::memory_order_seq_cst); }));
ASSERT_EQ(1, test_state.load(std::memory_order_seq_cst));
// Open connections
t_connection_opener_1 connection_opener(m_tcp_server, CONNECTION_COUNT);
parallel_exec([&] {
while (connection_opener.open());
});
// Wait for all open requests to complete
EXPECT_TRUE(busy_wait_for(DEFAULT_OPERATION_TIMEOUT, [&](){ return CONNECTION_COUNT + RESERVED_CONN_CNT <= m_commands_handler.new_connection_counter() + connection_opener.error_count(); }));
LOG_PRINT_L0("number of opened connections / fails (total): " << m_commands_handler.new_connection_counter() <<
" / " << connection_opener.error_count() << " (" << (m_commands_handler.new_connection_counter() + connection_opener.error_count()) << ")");
LOG_PRINT_L0("actual number of opened connections: " << m_tcp_server.get_config_object().get_connections_count());
ASSERT_GT(m_commands_handler.new_connection_counter(), RESERVED_CONN_CNT);
ASSERT_EQ(m_commands_handler.new_connection_counter() + connection_opener.error_count(), CONNECTION_COUNT + RESERVED_CONN_CNT);
// Wait for server accepts all connections
CMD_GET_STATISTICS::response srv_stat;
int last_new_connection_counter = -1;
busy_wait_for_server_statistics(srv_stat, [&last_new_connection_counter](const CMD_GET_STATISTICS::response& stat) {
if (last_new_connection_counter == static_cast<int>(stat.new_connection_counter)) return true;
else { last_new_connection_counter = static_cast<int>(stat.new_connection_counter); return false; }
});
// Ask server to close rest connections
CMD_CLOSE_ALL_CONNECTIONS::request req;
ASSERT_TRUE(epee::net_utils::notify_remote_command2(m_cmd_conn_id, CMD_CLOSE_ALL_CONNECTIONS::ID, req, m_tcp_server.get_config_object()));
// Wait for almost all connections to be closed by server
busy_wait_for(DEFAULT_OPERATION_TIMEOUT, [&](){ return m_commands_handler.new_connection_counter() <= m_commands_handler.close_connection_counter() + RESERVED_CONN_CNT; });
// It's OK, if there are opened connections, because server could accept not all our connections
ASSERT_LE(m_commands_handler.close_connection_counter() + RESERVED_CONN_CNT, m_commands_handler.new_connection_counter());
ASSERT_LE(RESERVED_CONN_CNT, m_tcp_server.get_config_object().get_connections_count());
// Wait for server to handle all open and close requests
busy_wait_for_server_statistics(srv_stat, [](const CMD_GET_STATISTICS::response& stat) { return stat.new_connection_counter - RESERVED_CONN_CNT <= stat.close_connection_counter; });
LOG_PRINT_L0("server statistics: " << srv_stat.to_string());
// Check server status
ASSERT_EQ(srv_stat.close_connection_counter, srv_stat.new_connection_counter - RESERVED_CONN_CNT);
ASSERT_EQ(RESERVED_CONN_CNT, srv_stat.opened_connections_count);
// Close rest connections
m_tcp_server.get_config_object().foreach_connection([&](test_connection_context& ctx) {
if (ctx.m_connection_id != m_cmd_conn_id)
{
CMD_DATA_REQUEST::request req;
bool r = epee::net_utils::async_invoke_remote_command2<CMD_DATA_REQUEST::response>(ctx.m_connection_id, CMD_DATA_REQUEST::ID, req,
m_tcp_server.get_config_object(), [=](int code, const CMD_DATA_REQUEST::response& rsp, const test_connection_context&) {
if (code <= 0)
{
LOG_PRINT_L0("Failed to invoke CMD_DATA_REQUEST. code = " << code);
}
});
if (!r)
LOG_PRINT_L0("Failed to invoke CMD_DATA_REQUEST");
}
return true;
});
// Wait for all opened connections to close
EXPECT_TRUE(busy_wait_for(DEFAULT_OPERATION_TIMEOUT, [&](){ return m_commands_handler.new_connection_counter() - RESERVED_CONN_CNT <= m_commands_handler.close_connection_counter(); }));
LOG_PRINT_L0("number of opened / closed connections: " << m_tcp_server.get_config_object().get_connections_count() <<
" / " << m_commands_handler.close_connection_counter());
// Check
ASSERT_EQ(m_commands_handler.close_connection_counter(), m_commands_handler.new_connection_counter() - RESERVED_CONN_CNT);
ASSERT_EQ(RESERVED_CONN_CNT, m_tcp_server.get_config_object().get_connections_count());
}
int main(int argc, char** argv)
{
TRY_ENTRY();
tools::on_startup();
epee::debug::get_set_enable_assert(true, false);
//set up logging options
mlog_configure(mlog_get_default_log_path("net_load_tests_clt.log"), true);
::testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
CATCH_ENTRY_L0("main", 1);
}
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