forked from boostorg/beast
Vinnie Falco
edeb44617b
The is_deferred nested type is removed from the BodyReader requirements. Performance for sending messages with `file_body` was cut almost in half with is_deferred as `std::true_type` since it caused double the number of socket writes. If the deferred behavior is absolutely necessary, callers can get the same effect by manually sending the headers first. Actions Required: * Callers who need the behavior of is_deferred as `std::true_type` should manually construct a serializer and serialize the header first, followed by the body.
77 lines
1.8 KiB
C++
77 lines
1.8 KiB
C++
//
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// Copyright (c) 2013-2017 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_STRING_VIEW_BODY
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#define BEAST_HTTP_STRING_VIEW_BODY
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#include <beast/config.hpp>
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#include <beast/core/string.hpp>
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#include <beast/http/message.hpp>
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#include <boost/asio/buffer.hpp>
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#include <boost/optional.hpp>
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#include <utility>
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namespace beast {
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namespace http {
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/** A readable HTTP message body represented by a @ref string_view.
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The application must ensure that the memory pointed to
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by the string view remains valid for the lifetime of
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any attempted operations.
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Meets the requirements of @b Body.
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*/
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struct string_view_body
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{
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/// The type of the body member when used in a message.
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using value_type = string_view;
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/// Returns the content length of this body in a message.
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static
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std::uint64_t
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size(value_type const& v)
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{
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return v.size();
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}
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#if BEAST_DOXYGEN
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/// The algorithm to obtain buffers representing the body
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using reader = implementation_defined;
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#else
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class reader
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{
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string_view body_;
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public:
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using const_buffers_type =
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boost::asio::const_buffers_1;
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template<bool isRequest, class Fields>
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explicit
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reader(message<isRequest, string_view_body,
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Fields> const& m, error_code& ec)
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: body_(m.body)
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{
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ec.assign(0, ec.category());
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}
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boost::optional<std::pair<const_buffers_type, bool>>
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get(error_code& ec)
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{
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ec.assign(0, ec.category());
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return {{{body_.data(), body_.size()}, false}};
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}
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};
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#endif
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};
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} // http
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} // beast
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#endif
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