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Viewing changes to boost/includes/boost/asio/ssl/detail/buffered_handshake_op.hpp

  • Committer: Nik K.
  • Date: 2013-11-07 16:58:35 UTC
  • Revision ID: nik.karbaum@gmail.com-20131107165835-kq99jz23drfj4dkh
Forgot to add some files; here they are

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boost/includes/boost/asio/ssl/detail/buffered_handshake_op.hpp
 
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//
 
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// ssl/detail/buffered_handshake_op.hpp
 
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// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
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//
 
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// Copyright (c) 2003-2013 Christopher M. Kohlhoff (chris at kohlhoff 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_ASIO_SSL_DETAIL_BUFFERED_HANDSHAKE_OP_HPP
 
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#define BOOST_ASIO_SSL_DETAIL_BUFFERED_HANDSHAKE_OP_HPP
 
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#if defined(_MSC_VER) && (_MSC_VER >= 1200)
 
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# pragma once
 
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#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
 
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#include <boost/asio/detail/config.hpp>
 
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#if !defined(BOOST_ASIO_ENABLE_OLD_SSL)
 
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# include <boost/asio/ssl/detail/engine.hpp>
 
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#endif // !defined(BOOST_ASIO_ENABLE_OLD_SSL)
 
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#include <boost/asio/detail/push_options.hpp>
 
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namespace boost {
 
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namespace asio {
 
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namespace ssl {
 
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namespace detail {
 
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#if !defined(BOOST_ASIO_ENABLE_OLD_SSL)
 
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template <typename ConstBufferSequence>
 
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class buffered_handshake_op
 
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{
 
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public:
 
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  buffered_handshake_op(stream_base::handshake_type type,
 
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      const ConstBufferSequence& buffers)
 
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    : type_(type),
 
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      buffers_(buffers),
 
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      total_buffer_size_(boost::asio::buffer_size(buffers_))
 
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  {
 
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  }
 
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  engine::want operator()(engine& eng,
 
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      boost::system::error_code& ec,
 
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      std::size_t& bytes_transferred) const
 
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  {
 
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    typename ConstBufferSequence::const_iterator iter = buffers_.begin();
 
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    typename ConstBufferSequence::const_iterator end = buffers_.end();
 
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    std::size_t accumulated_size = 0;
 
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    for (;;)
 
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    {
 
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      engine::want want = eng.handshake(type_, ec);
 
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      if (want != engine::want_input_and_retry
 
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          || bytes_transferred == total_buffer_size_)
 
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        return want;
 
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      // Find the next buffer piece to be fed to the engine.
 
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      while (iter != end)
 
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      {
 
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        const_buffer buffer(*iter);
 
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        // Skip over any buffers which have already been consumed by the engine.
 
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        if (bytes_transferred >= accumulated_size + buffer_size(buffer))
 
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        {
 
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          accumulated_size += buffer_size(buffer);
 
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          ++iter;
 
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          continue;
 
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        }
 
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        // The current buffer may have been partially consumed by the engine on
 
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        // a previous iteration. If so, adjust the buffer to point to the
 
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        // unused portion.
 
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        if (bytes_transferred > accumulated_size)
 
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          buffer = buffer + (bytes_transferred - accumulated_size);
 
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        // Pass the buffer to the engine, and update the bytes transferred to
 
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        // reflect the total number of bytes consumed so far.
 
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        bytes_transferred += buffer_size(buffer);
 
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        buffer = eng.put_input(buffer);
 
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        bytes_transferred -= buffer_size(buffer);
 
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        break;
 
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      }
 
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    }
 
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  }
 
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  template <typename Handler>
 
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  void call_handler(Handler& handler,
 
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      const boost::system::error_code& ec,
 
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      const std::size_t& bytes_transferred) const
 
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  {
 
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    handler(ec, bytes_transferred);
 
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  }
 
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private:
 
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  stream_base::handshake_type type_;
 
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  ConstBufferSequence buffers_;
 
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  std::size_t total_buffer_size_;
 
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};
 
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#endif // !defined(BOOST_ASIO_ENABLE_OLD_SSL)
 
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} // namespace detail
 
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} // namespace ssl
 
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} // namespace asio
 
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} // namespace boost
 
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#include <boost/asio/detail/pop_options.hpp>
 
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#endif // BOOST_ASIO_SSL_DETAIL_BUFFERED_HANDSHAKE_OP_HPP