90 lines
2.5 KiB
C++
90 lines
2.5 KiB
C++
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//
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// Copyright (c) 2019-2024 Ruben Perez Hidalgo (rubenperez038 at gmail dot com)
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#ifndef BOOST_MYSQL_IMPL_INTERNAL_SANSIO_RESET_CONNECTION_HPP
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#define BOOST_MYSQL_IMPL_INTERNAL_SANSIO_RESET_CONNECTION_HPP
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#include <boost/mysql/diagnostics.hpp>
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#include <boost/mysql/error_code.hpp>
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#include <boost/mysql/detail/algo_params.hpp>
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#include <boost/mysql/impl/internal/coroutine.hpp>
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#include <boost/mysql/impl/internal/protocol/deserialization.hpp>
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#include <boost/mysql/impl/internal/protocol/serialization.hpp>
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#include <boost/mysql/impl/internal/sansio/connection_state_data.hpp>
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namespace boost {
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namespace mysql {
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namespace detail {
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class read_reset_connection_response_algo
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{
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int resume_point_{0};
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diagnostics* diag_;
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std::uint8_t seqnum_{0};
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public:
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read_reset_connection_response_algo(diagnostics* diag, std::uint8_t seqnum) noexcept
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: diag_(diag), seqnum_(seqnum)
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{
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}
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next_action resume(connection_state_data& st, error_code ec)
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{
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switch (resume_point_)
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{
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case 0:
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// Read the reset response
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BOOST_MYSQL_YIELD(resume_point_, 1, st.read(seqnum_))
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if (ec)
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return ec;
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// Verify it's what we expected
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ec = st.deserialize_ok(*diag_);
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if (!ec)
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{
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// Reset was successful. Resetting changes the connection's character set
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// to the server's default, which is an unknown value that doesn't have to match
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// what was specified in handshake. As a safety measure, clear the current charset
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st.current_charset = character_set{};
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}
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// Done
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return ec;
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}
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return next_action();
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}
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};
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inline run_pipeline_algo_params setup_reset_connection_pipeline(
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connection_state_data& st,
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reset_connection_algo_params params
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)
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{
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st.write_buffer.clear();
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st.shared_pipeline_stages[0] = {
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pipeline_stage_kind::reset_connection,
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serialize_top_level(reset_connection_command{}, st.write_buffer),
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{}
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};
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return {
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params.diag,
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st.write_buffer,
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{st.shared_pipeline_stages.data(), 1},
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nullptr
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};
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}
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} // namespace detail
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} // namespace mysql
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} // namespace boost
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#endif /* INCLUDE_BOOST_MYSQL_DETAIL_NETWORK_ALGORITHMS_IMPL_CLOSE_STATEMENT_HPP_ */
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