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