1 // 2 // ssl/detail/shutdown_op.hpp 3 // ~~~~~~~~~~~~~~~~~~~~~~~~~~ 4 // 5 // Copyright (c) 2003-2021 Christopher M. Kohlhoff (chris at kohlhoff dot com) 6 // 7 // Distributed under the Boost Software License, Version 1.0. (See accompanying 8 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) 9 // 10 11 #ifndef BOOST_ASIO_SSL_DETAIL_SHUTDOWN_OP_HPP 12 #define BOOST_ASIO_SSL_DETAIL_SHUTDOWN_OP_HPP 13 14 #if defined(_MSC_VER) && (_MSC_VER >= 1200) 15 # pragma once 16 #endif // defined(_MSC_VER) && (_MSC_VER >= 1200) 17 18 #include <boost/asio/detail/config.hpp> 19 20 #include <boost/asio/ssl/detail/engine.hpp> 21 22 #include <boost/asio/detail/push_options.hpp> 23 24 namespace boost { 25 namespace asio { 26 namespace ssl { 27 namespace detail { 28 29 class shutdown_op 30 { 31 public: tracking_name()32 static BOOST_ASIO_CONSTEXPR const char* tracking_name() 33 { 34 return "ssl::stream<>::async_shutdown"; 35 } 36 operator ()(engine & eng,boost::system::error_code & ec,std::size_t & bytes_transferred) const37 engine::want operator()(engine& eng, 38 boost::system::error_code& ec, 39 std::size_t& bytes_transferred) const 40 { 41 bytes_transferred = 0; 42 return eng.shutdown(ec); 43 } 44 45 template <typename Handler> call_handler(Handler & handler,const boost::system::error_code & ec,const std::size_t &) const46 void call_handler(Handler& handler, 47 const boost::system::error_code& ec, 48 const std::size_t&) const 49 { 50 if (ec == boost::asio::error::eof) 51 { 52 // The engine only generates an eof when the shutdown notification has 53 // been received from the peer. This indicates that the shutdown has 54 // completed successfully, and thus need not be passed on to the handler. 55 BOOST_ASIO_MOVE_OR_LVALUE(Handler)(handler)(boost::system::error_code()); 56 } 57 else 58 { 59 BOOST_ASIO_MOVE_OR_LVALUE(Handler)(handler)(ec); 60 } 61 } 62 }; 63 64 } // namespace detail 65 } // namespace ssl 66 } // namespace asio 67 } // namespace boost 68 69 #include <boost/asio/detail/pop_options.hpp> 70 71 #endif // BOOST_ASIO_SSL_DETAIL_SHUTDOWN_OP_HPP 72