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boosted_tcp_server: add segfault demo

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anon 2021-01-19 17:09:32 +00:00 committed by selsta
parent 8fef32e45c
commit afec439953
1 changed files with 150 additions and 0 deletions
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150
tests/unit_tests/epee_boosted_tcp_server.cpp
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@ -37,6 +37,7 @@
#include "include_base_utils.h"
#include "string_tools.h"
#include "net/abstract_tcp_server2.h"
#include "net/levin_protocol_handler_async.h"
namespace
{
@ -132,3 +133,152 @@ TEST(boosted_tcp_server, worker_threads_are_exception_resistant)
ASSERT_TRUE(srv.timed_wait_server_stop(5 * 1000));
ASSERT_TRUE(srv.deinit_server());
}
TEST(test_epee_connection, test_lifetime)
{
struct context_t: epee::net_utils::connection_context_base {
static constexpr size_t get_max_bytes(int) noexcept { return -1; }
static constexpr int handshake_command() noexcept { return 1001; }
static constexpr bool handshake_complete() noexcept { return true; }
};
struct command_handler_t: epee::levin::levin_commands_handler<context_t> {
size_t delay;
command_handler_t(size_t delay = 0): delay(delay) {}
virtual int invoke(int, const epee::span<const uint8_t>, std::string&, context_t&) override { epee::misc_utils::sleep_no_w(delay); return {}; }
virtual int notify(int, const epee::span<const uint8_t>, context_t&) override { return {}; }
virtual void callback(context_t&) override {}
virtual void on_connection_new(context_t&) override {}
virtual void on_connection_close(context_t&) override {}
virtual ~command_handler_t() override {}
static void destroy(epee::levin::levin_commands_handler<context_t>* ptr) { delete ptr; }
};
using handler_t = epee::levin::async_protocol_handler<context_t>;
using connection_t = epee::net_utils::connection<handler_t>;
using connection_ptr = boost::shared_ptr<connection_t>;
using shared_state_t = typename connection_t::shared_state;
using shared_state_ptr = std::shared_ptr<shared_state_t>;
using tag_t = boost::uuids::uuid;
using tags_t = std::vector<tag_t>;
using io_context_t = boost::asio::io_service;
using endpoint_t = boost::asio::ip::tcp::endpoint;
using work_t = boost::asio::io_service::work;
using work_ptr = std::shared_ptr<work_t>;
using workers_t = std::vector<std::thread>;
using server_t = epee::net_utils::boosted_tcp_server<handler_t>;
io_context_t io_context;
work_ptr work(std::make_shared<work_t>(io_context));
workers_t workers;
while (workers.size() < 4) {
workers.emplace_back([&io_context]{
io_context.run();
});
}
endpoint_t endpoint(boost::asio::ip::address::from_string("127.0.0.1"), 5262);
server_t server(epee::net_utils::e_connection_type_P2P);
server.init_server(endpoint.port(),
endpoint.address().to_string(),
0,
"",
false,
true,
epee::net_utils::ssl_support_t::e_ssl_support_disabled
);
server.run_server(2, false);
server.get_config_shared()->set_handler(new command_handler_t, &command_handler_t::destroy);
io_context.post([&io_context, &work, &endpoint, &server]{
auto scope_exit_handler = epee::misc_utils::create_scope_leave_handler([&work]{
work.reset();
});
shared_state_ptr shared_state(std::make_shared<shared_state_t>());
shared_state->set_handler(new command_handler_t, &command_handler_t::destroy);
auto create_connection = [&io_context, &endpoint, &shared_state] {
connection_ptr conn(new connection_t(io_context, shared_state, {}, {}));
conn->socket().connect(endpoint);
conn->start({}, {});
context_t context;
conn->get_context(context);
auto tag = context.m_connection_id;
return tag;
};
ASSERT_TRUE(shared_state->get_connections_count() == 0);
auto tag = create_connection();
ASSERT_TRUE(shared_state->get_connections_count() == 1);
bool success = shared_state->for_connection(tag, [shared_state](context_t& context){
shared_state->close(context.m_connection_id);
context.m_remote_address.get_zone();
return true;
});
ASSERT_TRUE(success);
ASSERT_TRUE(shared_state->get_connections_count() == 0);
constexpr auto N = 8;
tags_t tags(N);
for(auto &t: tags)
t = create_connection();
ASSERT_TRUE(shared_state->get_connections_count() == N);
size_t index = 0;
success = shared_state->foreach_connection([&index, shared_state, &tags, &create_connection](context_t& context){
if (!index)
for (const auto &t: tags)
shared_state->close(t);
shared_state->close(context.m_connection_id);
context.m_remote_address.get_zone();
++index;
for(auto i = 0; i < N; ++i)
create_connection();
return true;
});
ASSERT_TRUE(success);
ASSERT_TRUE(index == N);
ASSERT_TRUE(shared_state->get_connections_count() == N * N);
index = 0;
success = shared_state->foreach_connection([&index, shared_state](context_t& context){
shared_state->close(context.m_connection_id);
context.m_remote_address.get_zone();
++index;
return true;
});
ASSERT_TRUE(success);
ASSERT_TRUE(index == N * N);
ASSERT_TRUE(shared_state->get_connections_count() == 0);
ASSERT_TRUE(shared_state->get_connections_count() == 0);
constexpr auto DELAY = 30;
constexpr auto TIMEOUT = 1;
server.get_config_shared()->set_handler(new command_handler_t(DELAY), &command_handler_t::destroy);
for (auto i = 0; i < N; ++i) {
tag = create_connection();
ASSERT_TRUE(shared_state->get_connections_count() == 1);
success = shared_state->invoke_async(1, {}, tag, [](int, const epee::span<const uint8_t>, context_t&){}, TIMEOUT);
ASSERT_TRUE(success);
while (shared_state->sock_count == 1) {
success = shared_state->foreach_connection([&shared_state, &tag](context_t&){
return shared_state->request_callback(tag);
});
ASSERT_TRUE(success);
}
shared_state->close(tag);
ASSERT_TRUE(shared_state->get_connections_count() == 0);
}
});
for (auto& w: workers) {
w.join();
}
server.send_stop_signal();
server.timed_wait_server_stop(5 * 1000);
server.deinit_server();
}