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-rw-r--r--3rdparty/asio/include/asio/ssl/detail/buffered_handshake_op.hpp119
1 files changed, 119 insertions, 0 deletions
diff --git a/3rdparty/asio/include/asio/ssl/detail/buffered_handshake_op.hpp b/3rdparty/asio/include/asio/ssl/detail/buffered_handshake_op.hpp
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+++ b/3rdparty/asio/include/asio/ssl/detail/buffered_handshake_op.hpp
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+//
+// ssl/detail/buffered_handshake_op.hpp
+// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+//
+// Copyright (c) 2003-2021 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 ASIO_SSL_DETAIL_BUFFERED_HANDSHAKE_OP_HPP
+#define ASIO_SSL_DETAIL_BUFFERED_HANDSHAKE_OP_HPP
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1200)
+# pragma once
+#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
+
+#include "asio/detail/config.hpp"
+
+#include "asio/ssl/detail/engine.hpp"
+
+#include "asio/detail/push_options.hpp"
+
+namespace asio {
+namespace ssl {
+namespace detail {
+
+template <typename ConstBufferSequence>
+class buffered_handshake_op
+{
+public:
+ static ASIO_CONSTEXPR const char* tracking_name()
+ {
+ return "ssl::stream<>::async_buffered_handshake";
+ }
+
+ buffered_handshake_op(stream_base::handshake_type type,
+ const ConstBufferSequence& buffers)
+ : type_(type),
+ buffers_(buffers),
+ total_buffer_size_(asio::buffer_size(buffers_))
+ {
+ }
+
+ engine::want operator()(engine& eng,
+ asio::error_code& ec,
+ std::size_t& bytes_transferred) const
+ {
+ return this->process(eng, ec, bytes_transferred,
+ asio::buffer_sequence_begin(buffers_),
+ asio::buffer_sequence_end(buffers_));
+ }
+
+ template <typename Handler>
+ void call_handler(Handler& handler,
+ const asio::error_code& ec,
+ const std::size_t& bytes_transferred) const
+ {
+ ASIO_MOVE_OR_LVALUE(Handler)(handler)(ec, bytes_transferred);
+ }
+
+private:
+ template <typename Iterator>
+ engine::want process(engine& eng,
+ asio::error_code& ec,
+ std::size_t& bytes_transferred,
+ Iterator begin, Iterator end) const
+ {
+ Iterator iter = begin;
+ 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())
+ {
+ accumulated_size += buffer.size();
+ ++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 = eng.put_input(buffer);
+ bytes_transferred -= buffer.size();
+ break;
+ }
+ }
+ }
+
+ stream_base::handshake_type type_;
+ ConstBufferSequence buffers_;
+ std::size_t total_buffer_size_;
+};
+
+} // namespace detail
+} // namespace ssl
+} // namespace asio
+
+#include "asio/detail/pop_options.hpp"
+
+#endif // ASIO_SSL_DETAIL_BUFFERED_HANDSHAKE_OP_HPP