mirror of
https://github.com/boostorg/mqtt5.git
synced 2025-10-04 21:00:53 +02:00
99f30b3880
Summary: related to T13332 Reviewers: ivica Reviewed By: ivica Subscribers: miljen, iljazovic Differential Revision: https://repo.mireo.local/D27099
96 lines
2.3 KiB
C++
96 lines
2.3 KiB
C++
#ifndef ASYNC_MQTT5_PING_OP_HPP
|
|
#define ASYNC_MQTT5_PING_OP_HPP
|
|
|
|
#include <chrono>
|
|
#include <memory>
|
|
|
|
#include <boost/asio/consign.hpp>
|
|
#include <boost/asio/prepend.hpp>
|
|
#include <boost/asio/recycling_allocator.hpp>
|
|
#include <boost/asio/steady_timer.hpp>
|
|
|
|
#include <async_mqtt5/detail/control_packet.hpp>
|
|
#include <async_mqtt5/detail/internal_types.hpp>
|
|
|
|
#include <async_mqtt5/impl/codecs/message_encoders.hpp>
|
|
|
|
namespace async_mqtt5::detail {
|
|
|
|
namespace asio = boost::asio;
|
|
|
|
template <typename ClientService>
|
|
class ping_op {
|
|
using client_service = ClientService;
|
|
struct on_timer {};
|
|
struct on_pingreq {};
|
|
|
|
static constexpr auto ping_interval = std::chrono::seconds(5);
|
|
|
|
std::shared_ptr<client_service> _svc_ptr;
|
|
std::unique_ptr<asio::steady_timer> _ping_timer;
|
|
|
|
public:
|
|
ping_op(const std::shared_ptr<client_service>& svc_ptr) :
|
|
_svc_ptr(svc_ptr),
|
|
_ping_timer(new asio::steady_timer(svc_ptr->get_executor()))
|
|
{}
|
|
|
|
ping_op(ping_op&&) noexcept = default;
|
|
ping_op(const ping_op&) = delete;
|
|
|
|
using executor_type = typename client_service::executor_type;
|
|
executor_type get_executor() const noexcept {
|
|
return _svc_ptr->get_executor();
|
|
}
|
|
|
|
using allocator_type = asio::recycling_allocator<void>;
|
|
allocator_type get_allocator() const noexcept {
|
|
return allocator_type {};
|
|
}
|
|
|
|
using cancellation_slot_type = asio::cancellation_slot;
|
|
asio::cancellation_slot get_cancellation_slot() const noexcept {
|
|
return _svc_ptr->_cancel_ping.slot();
|
|
}
|
|
|
|
void perform(duration from_now) {
|
|
_ping_timer->expires_from_now(from_now);
|
|
_ping_timer->async_wait(
|
|
asio::prepend(std::move(*this), on_timer {})
|
|
);
|
|
}
|
|
|
|
void operator()(on_timer, error_code ec) {
|
|
get_cancellation_slot().clear();
|
|
|
|
if (ec == asio::error::operation_aborted || !_svc_ptr->is_open())
|
|
return;
|
|
|
|
auto pingreq = control_packet<allocator_type>::of(
|
|
no_pid, get_allocator(), encoders::encode_pingreq
|
|
);
|
|
|
|
auto wire_data = pingreq.wire_data();
|
|
_svc_ptr->async_send(
|
|
wire_data,
|
|
no_serial, send_flag::none,
|
|
asio::consign(
|
|
asio::prepend(std::move(*this), on_pingreq {}),
|
|
std::move(pingreq)
|
|
)
|
|
);
|
|
}
|
|
|
|
void operator()(on_pingreq, error_code ec) {
|
|
get_cancellation_slot().clear();
|
|
|
|
if (!ec || ec == asio::error::try_again)
|
|
perform(ping_interval - std::chrono::seconds(1));
|
|
}
|
|
};
|
|
|
|
|
|
} // end namespace async_mqtt5::detail
|
|
|
|
#endif // !ASYNC_MQTT5_PING_OP_HPP
|