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Merge pull request #7389

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80125a2 async_protocol_handler_config: remove connection correctly (anon)
1b51d39 async_protocol_handler_config: add segfault demo (anon)
This commit is contained in:
luigi1111 2021-03-05 13:54:45 -05:00
commit c20e44df4e
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2 changed files with 74 additions and 3 deletions
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2
contrib/epee/include/net/levin_protocol_handler_async.h
View file

@ -787,7 +787,7 @@ void async_protocol_handler_config<t_connection_context>::delete_connections(siz
{
auto i = connections.end() - 1;
async_protocol_handler<t_connection_context> *conn = m_connects.at(*i);
del_connection(conn);
m_connects.erase(*i);
conn->close();
connections.erase(i);
}

75
tests/unit_tests/epee_boosted_tcp_server.cpp
View file

@ -143,14 +143,24 @@ TEST(test_epee_connection, test_lifetime)
static constexpr bool handshake_complete() noexcept { return true; }
};
using functional_obj_t = std::function<void ()>;
struct command_handler_t: epee::levin::levin_commands_handler<context_t> {
size_t delay;
command_handler_t(size_t delay = 0): delay(delay) {}
functional_obj_t on_connection_close_f;
command_handler_t(size_t delay = 0,
functional_obj_t on_connection_close_f = nullptr
):
delay(delay),
on_connection_close_f(on_connection_close_f)
{}
virtual int invoke(int, const epee::span<const uint8_t>, epee::byte_slice&, 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 void on_connection_close(context_t&) override {
if (on_connection_close_f)
on_connection_close_f();
}
virtual ~command_handler_t() override {}
static void destroy(epee::levin::levin_commands_handler<context_t>* ptr) { delete ptr; }
};
@ -168,6 +178,14 @@ TEST(test_epee_connection, test_lifetime)
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>;
using lock_t = std::mutex;
using lock_guard_t = std::lock_guard<lock_t>;
using connection_weak_ptr = boost::weak_ptr<connection_t>;
struct shared_conn_t {
lock_t lock;
connection_weak_ptr conn;
};
using shared_conn_ptr = std::shared_ptr<shared_conn_t>;
io_context_t io_context;
work_ptr work(std::make_shared<work_t>(io_context));
@ -255,6 +273,7 @@ TEST(test_epee_connection, test_lifetime)
ASSERT_TRUE(index == N * N);
ASSERT_TRUE(shared_state->get_connections_count() == 0);
while (shared_state->sock_count);
ASSERT_TRUE(shared_state->get_connections_count() == 0);
constexpr auto DELAY = 30;
constexpr auto TIMEOUT = 1;
@ -273,6 +292,58 @@ TEST(test_epee_connection, test_lifetime)
shared_state->close(tag);
ASSERT_TRUE(shared_state->get_connections_count() == 0);
}
while (shared_state->sock_count);
constexpr auto ZERO_DELAY = 0;
size_t counter = 0;
shared_state->set_handler(new command_handler_t(ZERO_DELAY,
[&counter]{
ASSERT_TRUE(counter++ == 0);
}
),
&command_handler_t::destroy
);
connection_ptr conn(new connection_t(io_context, shared_state, {}, {}));
conn->socket().connect(endpoint);
conn->start({}, {});
ASSERT_TRUE(shared_state->get_connections_count() == 1);
shared_state->del_out_connections(1);
ASSERT_TRUE(shared_state->get_connections_count() == 0);
conn.reset();
while (shared_state->sock_count);
shared_conn_ptr shared_conn(std::make_shared<shared_conn_t>());
shared_state->set_handler(new command_handler_t(ZERO_DELAY,
[shared_state, shared_conn]{
{
connection_ptr conn;
{
lock_guard_t guard(shared_conn->lock);
conn = std::move(shared_conn->conn.lock());
}
if (conn)
conn->cancel();
}
const auto success = shared_state->foreach_connection([](context_t&){
return true;
});
ASSERT_TRUE(success);
}
),
&command_handler_t::destroy
);
for (auto i = 0; i < N; ++i) {
{
connection_ptr conn(new connection_t(io_context, shared_state, {}, {}));
conn->socket().connect(endpoint);
conn->start({}, {});
lock_guard_t guard(shared_conn->lock);
shared_conn->conn = conn;
}
ASSERT_TRUE(shared_state->get_connections_count() == 1);
shared_state->del_out_connections(1);
ASSERT_TRUE(shared_state->get_connections_count() == 0);
}
});
for (auto& w: workers) {