comparison DEPENDENCIES/generic/include/boost/asio/ssl/detail/buffered_handshake_op.hpp @ 16:2665513ce2d3

Add boost headers

+//
+// ssl/detail/buffered_handshake_op.hpp
+// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+//
+// Copyright (c) 2003-2013 Christopher M. Kohlhoff (chris at kohlhoff dot com)
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#ifndef BOOST_ASIO_SSL_DETAIL_BUFFERED_HANDSHAKE_OP_HPP
+#define BOOST_ASIO_SSL_DETAIL_BUFFERED_HANDSHAKE_OP_HPP
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1200)
+# pragma once
+#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
+
+#include <boost/asio/detail/config.hpp>
+
+#if !defined(BOOST_ASIO_ENABLE_OLD_SSL)
+# include <boost/asio/ssl/detail/engine.hpp>
+#endif // !defined(BOOST_ASIO_ENABLE_OLD_SSL)
+
+#include <boost/asio/detail/push_options.hpp>
+
+namespace boost {
+namespace asio {
+namespace ssl {
+namespace detail {
+
+#if !defined(BOOST_ASIO_ENABLE_OLD_SSL)
+
+template <typename ConstBufferSequence>
+class buffered_handshake_op
+{
+public:
+  buffered_handshake_op(stream_base::handshake_type type,
+      const ConstBufferSequence& buffers)
+    : type_(type),
+      buffers_(buffers),
+      total_buffer_size_(boost::asio::buffer_size(buffers_))
+  {
+  }
+
+  engine::want operator()(engine& eng,
+      boost::system::error_code& ec,
+      std::size_t& bytes_transferred) const
+  {
+    typename ConstBufferSequence::const_iterator iter = buffers_.begin();
+    typename ConstBufferSequence::const_iterator end = buffers_.end();
+    std::size_t accumulated_size = 0;
+
+    for (;;)
+    {
+      engine::want want = eng.handshake(type_, ec);
+      if (want != engine::want_input_and_retry
+          || bytes_transferred == total_buffer_size_)
+        return want;
+
+      // Find the next buffer piece to be fed to the engine.
+      while (iter != end)
+      {
+        const_buffer buffer(*iter);
+
+        // Skip over any buffers which have already been consumed by the engine.
+        if (bytes_transferred >= accumulated_size + buffer_size(buffer))
+        {
+          accumulated_size += buffer_size(buffer);
+          ++iter;
+          continue;
+        }
+
+        // The current buffer may have been partially consumed by the engine on
+        // a previous iteration. If so, adjust the buffer to point to the
+        // unused portion.
+        if (bytes_transferred > accumulated_size)
+          buffer = buffer + (bytes_transferred - accumulated_size);
+
+        // Pass the buffer to the engine, and update the bytes transferred to
+        // reflect the total number of bytes consumed so far.
+        bytes_transferred += buffer_size(buffer);
+        buffer = eng.put_input(buffer);
+        bytes_transferred -= buffer_size(buffer);
+        break;
+      }
+    }
+  }
+
+  template <typename Handler>
+  void call_handler(Handler& handler,
+      const boost::system::error_code& ec,
+      const std::size_t& bytes_transferred) const
+  {
+    handler(ec, bytes_transferred);
+  }
+
+private:
+  stream_base::handshake_type type_;
+  ConstBufferSequence buffers_;
+  std::size_t total_buffer_size_;
+};
+
+#endif // !defined(BOOST_ASIO_ENABLE_OLD_SSL)
+
+} // namespace detail
+} // namespace ssl
+} // namespace asio
+} // namespace boost
+
+#include <boost/asio/detail/pop_options.hpp>
+
+#endif // BOOST_ASIO_SSL_DETAIL_BUFFERED_HANDSHAKE_OP_HPP