ceph/src/boost/libs/asio/doc/requirements/HandshakeHandler.qbk

   1 [/
   2  / Copyright (c) 2003-2016 Christopher M. Kohlhoff (chris at kohlhoff dot com)
   3  /
   4  / Distributed under the Boost Software License, Version 1.0. (See accompanying
   5  / file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   6  /]
   7
   8 [section:HandshakeHandler SSL handshake handler requirements]
   9
  10 A handshake handler must meet the requirements for a [link
  11 boost_asio.reference.Handler handler]. A value `h` of a handshake handler
  12 class should work correctly in the expression `h(ec)`, where `ec` is an lvalue
  13 of type `const error_code`.
  14
  15 [heading Examples]
  16
  17 A free function as a handshake handler:
  18
  19   void handshake_handler(
  20       const boost::system::error_code& ec)
  21   {
  22     ...
  23   }
  24
  25 A handshake handler function object:
  26
  27   struct handshake_handler
  28   {
  29     ...
  30     void operator()(
  31         const boost::system::error_code& ec)
  32     {
  33       ...
  34     }
  35     ...
  36   };
  37
  38 A non-static class member function adapted to a handshake handler using `bind()`:
  39
  40   void my_class::handshake_handler(
  41       const boost::system::error_code& ec)
  42   {
  43     ...
  44   }
  45   ...
  46   ssl_stream.async_handshake(...,
  47       boost::bind(&my_class::handshake_handler,
  48         this, boost::asio::placeholders::error));
  49
  50 [endsect]