forked from boostorg/beast
Vinnie Falco
8b62c23ab6
New classes are introduced to represent HTTP messages and their associated bodies. The parser interface is reworked to use CRTP, error codes, and trait checks. New classes: * basic_headers Models field/value pairs in a HTTP message. * message Models a HTTP message, body behavior defined by template argument. Parsed message carries metadata generated during parsing. * parser Produces parsed messages. * empty_body, string_body, basic_streambuf_body Classes used to represent content bodies in various ways. New functions: * read, async_read, write, async_write Read and write HTTP messages on a socket. New concepts: * Body: Represents the HTTP Content-Body. * Field: A HTTP header field. * FieldSequence: A forward sequence of fields. * Reader: Parses a Body from a stream of bytes. * Writer: Serializes a Body to buffers. basic_parser changes: * add write methods which throw exceptions instead * error_code passed via parameter instead of return value * fold private member calls into existing callbacks * basic_parser uses CRTP instead of virtual members * add documentation on Derived requirements for CRTP impl/http-parser changes: * joyent renamed to nodejs to reflect upstream changes
100 lines
2.6 KiB
C++
100 lines
2.6 KiB
C++
//------------------------------------------------------------------------------
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/*
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This file is part of Beast: https://github.com/vinniefalco/Beast
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Copyright 2013, Vinnie Falco <vinnie.falco@gmail.com>
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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//==============================================================================
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#ifndef BEAST_HTTP_STRING_BODY_H_INCLUDED
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#define BEAST_HTTP_STRING_BODY_H_INCLUDED
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#include <beast/http/error.h>
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#include <beast/http/message.h>
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#include <beast/http/resume_context.h>
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#include <beast/asio/append_buffers.h>
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#include <beast/asio/streambuf.h>
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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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/** A Body represented by a std::string.
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*/
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struct string_body
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{
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using value_type = std::string;
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class reader
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{
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value_type& s_;
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public:
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template<bool isRequest, class Allocator>
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explicit
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reader(message<isRequest,
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string_body, Allocator>& m) noexcept
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: s_(m.body)
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{
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}
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void
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write(void const* data,
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std::size_t size, error_code&) noexcept
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{
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auto const n = s_.size();
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s_.resize(n + size);
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std::memcpy(&s_[n], data, size);
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}
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};
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class writer
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{
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value_type const& body_;
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public:
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template<bool isRequest, class Allocator>
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explicit
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writer(message<isRequest, string_body, Allocator> const& msg)
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: body_(msg.body)
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{
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}
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void
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init(error_code& ec)
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{
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}
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std::size_t
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content_length() const
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{
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return body_.size();
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}
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template<class Write>
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boost::tribool
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operator()(resume_context&&, error_code&, Write&& write)
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{
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write(boost::asio::buffer(body_));
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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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