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[mqtt-client] receive channel discards oldest message

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Reviewers: ivica

Reviewed By: ivica

Subscribers: korina

Differential Revision: https://repo.mireo.local/D26538
This commit is contained in:
Bruno Iljazovic
2023-11-15 10:44:09 +01:00
parent d77c97e3f2
commit a9dd6553f2
6 changed files with 99 additions and 18 deletions
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21
include/async_mqtt5/impl/client_service.hpp
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@@ -1,9 +1,10 @@
#ifndef ASYNC_MQTT5_CLIENT_SERVICE_HPP
#define ASYNC_MQTT5_CLIENT_SERVICE_HPP
#include <boost/asio/experimental/concurrent_channel.hpp>
#include <boost/asio/experimental/basic_concurrent_channel.hpp>
#include <async_mqtt5/detail/internal_types.hpp>
#include <async_mqtt5/detail/channel_traits.hpp>
#include <async_mqtt5/impl/assemble_op.hpp>
#include <async_mqtt5/impl/async_sender.hpp>
@@ -117,7 +118,9 @@ public:
using executor_type = typename stream_type::executor_type;
private:
using tls_context_type = TlsContext;
using receive_channel = asio::experimental::concurrent_channel<
using receive_channel = asio::experimental::basic_concurrent_channel<
asio::any_io_executor,
channel_traits<>,
void (error_code, std::string, std::string, publish_props)
>;
@@ -162,7 +165,7 @@ public:
_stream(ex, _stream_context),
_async_sender(*this),
_active_span(_read_buff.cend(), _read_buff.cend()),
_rec_channel(ex, 128)
_rec_channel(ex, std::numeric_limits<size_t>::max())
{}
executor_type get_executor() const noexcept {
@@ -208,6 +211,11 @@ public:
return _stream_context.connack_prop(p);
}
void run() {
_stream.open();
_rec_channel.reset();
}
void open_stream() {
_stream.open();
}
@@ -224,12 +232,7 @@ public:
_cancel_ping.emit(asio::cancellation_type::terminal);
_cancel_sentry.emit(asio::cancellation_type::terminal);
// cancelling the receive channel invokes all pending handlers with
// ec = asio::experimental::error::channel_cancelled
// adding another ec to the list of the possible client ecs
// TODO: close() the channel instead, and open() it on the next run()
_rec_channel.cancel();
_rec_channel.close();
_replies.cancel_unanswered();
_async_sender.cancel();
_stream.close();