forked from boostorg/beast
Vinnie Falco
cf43f516d2
fix #139, fix #140 * Writer uses write instead of operator() * Refactor traits to use void_t * Remove is_ReadableBody, is_WritableBody * Add has_reader, has_writer, is_Reader, is_Writer * More friendly compile errors on failed concept checks
70 lines
1.3 KiB
C++
70 lines
1.3 KiB
C++
//
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// Copyright (c) 2013-2016 Vinnie Falco (vinnie dot falco at gmail 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 BEAST_HTTP_EMPTY_BODY_HPP
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#define BEAST_HTTP_EMPTY_BODY_HPP
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#include <beast/http/body_type.hpp>
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#include <boost/asio/buffer.hpp>
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#include <memory>
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#include <string>
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namespace beast {
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namespace http {
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/** An empty content-body.
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Meets the requirements of @b `Body`.
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*/
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struct empty_body
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{
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#if GENERATING_DOCS
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/// The type of the `message::body` member
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using value_type = void;
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#else
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struct value_type {};
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#endif
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#if GENERATING_DOCS
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private:
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#endif
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struct writer
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{
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template<bool isRequest, class Headers>
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explicit
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writer(message<isRequest, empty_body, Headers> const& m) noexcept
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{
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}
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void
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init(error_code& ec) noexcept
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{
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}
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std::uint64_t
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content_length() const noexcept
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{
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return 0;
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}
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template<class WriteFunction>
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boost::tribool
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write(resume_context&&, error_code&,
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WriteFunction&& wf) noexcept
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{
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wf(boost::asio::null_buffers{});
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return true;
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}
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};
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};
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} // http
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} // beast
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#endif
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