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Vinnie Falco
2016-04-19 20:29:16 -04:00
parent 54f6f0ceba
commit f07cd8ceb4
239 changed files with 2692 additions and 19127 deletions
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435
include/beast/http/basic_headers.hpp Normal file
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//
// Copyright (c) 2013-2016 Vinnie Falco (vinnie dot falco at gmail 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 BEAST_HTTP_BASIC_HEADERS_HPP
#define BEAST_HTTP_BASIC_HEADERS_HPP
#include <beast/http/detail/writes.hpp>
#include <beast/type_check.hpp>
#include <beast/detail/ci_char_traits.hpp>
#include <beast/detail/empty_base_optimization.hpp>
#include <boost/intrusive/list.hpp>
#include <boost/intrusive/set.hpp>
#include <boost/lexical_cast.hpp>
#include <boost/utility/string_ref.hpp>
#include <algorithm>
#include <cctype>
#include <memory>
#include <string>
#include <type_traits>
#include <utility>
namespace beast {
namespace http {
template<class Allocator>
class basic_headers;
namespace detail {
class basic_headers_base
{
public:
struct value_type
{
std::string first;
std::string second;
value_type(boost::string_ref const& name_,
boost::string_ref const& value_)
: first(name_)
, second(value_)
{
}
boost::string_ref
name() const
{
return first;
}
boost::string_ref
value() const
{
return second;
}
};
protected:
template<class Allocator>
friend class beast::http::basic_headers;
struct element
: boost::intrusive::set_base_hook <
boost::intrusive::link_mode <
boost::intrusive::normal_link>>
, boost::intrusive::list_base_hook <
boost::intrusive::link_mode <
boost::intrusive::normal_link>>
{
value_type data;
element(boost::string_ref const& name,
boost::string_ref const& value)
: data(name, value)
{
}
};
struct less : private beast::detail::ci_less
{
template<class String>
bool
operator()(String const& lhs, element const& rhs) const
{
return ci_less::operator()(lhs, rhs.data.first);
}
template<class String>
bool
operator()(element const& lhs, String const& rhs) const
{
return ci_less::operator()(lhs.data.first, rhs);
}
bool
operator()(element const& lhs, element const& rhs) const
{
return ci_less::operator()(
lhs.data.first, rhs.data.first);
}
};
using list_t = typename boost::intrusive::make_list<
element, boost::intrusive::constant_time_size<false>>::type;
using set_t = typename boost::intrusive::make_set<
element, boost::intrusive::constant_time_size<true>,
boost::intrusive::compare<less>>::type;
// data
set_t set_;
list_t list_;
basic_headers_base(set_t&& set, list_t&& list)
: set_(std::move(set))
, list_(std::move(list))
{
}
public:
class const_iterator;
using iterator = const_iterator;
basic_headers_base() = default;
/// Returns an iterator to the beginning of the field sequence.
iterator
begin() const;
/// Returns an iterator to the end of the field sequence.
iterator
end() const;
/// Returns an iterator to the beginning of the field sequence.
iterator
cbegin() const;
/// Returns an iterator to the end of the field sequence.
iterator
cend() const;
};
//------------------------------------------------------------------------------
class basic_headers_base::const_iterator
{
using iter_type = list_t::const_iterator;
iter_type it_;
template<class Allocator>
friend class beast::http::basic_headers;
friend class basic_headers_base;
const_iterator(iter_type it)
: it_(it)
{
}
public:
using value_type =
typename basic_headers_base::value_type;
using pointer = value_type const*;
using reference = value_type const&;
using difference_type = std::ptrdiff_t;
using iterator_category =
std::bidirectional_iterator_tag;
const_iterator() = default;
const_iterator(const_iterator&& other) = default;
const_iterator(const_iterator const& other) = default;
const_iterator& operator=(const_iterator&& other) = default;
const_iterator& operator=(const_iterator const& other) = default;
bool
operator==(const_iterator const& other) const
{
return it_ == other.it_;
}
bool
operator!=(const_iterator const& other) const
{
return !(*this == other);
}
reference
operator*() const
{
return it_->data;
}
pointer
operator->() const
{
return &**this;
}
const_iterator&
operator++()
{
++it_;
return *this;
}
const_iterator
operator++(int)
{
auto temp = *this;
++(*this);
return temp;
}
const_iterator&
operator--()
{
--it_;
return *this;
}
const_iterator
operator--(int)
{
auto temp = *this;
--(*this);
return temp;
}
};
} // detail
//------------------------------------------------------------------------------
/** Container to store HTTP headers.
Meets the requirements of `FieldSequence`.
*/
template<class Allocator>
class basic_headers
#if ! GENERATING_DOCS
: private beast::detail::empty_base_optimization<
typename std::allocator_traits<Allocator>::
template rebind_alloc<
detail::basic_headers_base::element>>
, public detail::basic_headers_base
#endif
{
using alloc_type = typename
std::allocator_traits<Allocator>::
template rebind_alloc<
detail::basic_headers_base::element>;
using alloc_traits =
std::allocator_traits<alloc_type>;
using size_type =
typename std::allocator_traits<Allocator>::size_type;
void
delete_all();
void
move_assign(basic_headers&, std::false_type);
void
move_assign(basic_headers&, std::true_type);
void
copy_assign(basic_headers const&, std::false_type);
void
copy_assign(basic_headers const&, std::true_type);
template<class FieldSequence>
void
copy_from(FieldSequence const& fs)
{
for(auto const& e : fs)
insert(e.first, e.second);
}
public:
/// The type of allocator used.
using allocator_type = Allocator;
/// Default constructor.
basic_headers() = default;
/// Destructor
~basic_headers();
/** Construct the headers.
@param alloc The allocator to use.
*/
explicit
basic_headers(Allocator const& alloc);
/** Move constructor.
The moved-from object becomes an empty field sequence.
@param other The object to move from.
*/
basic_headers(basic_headers&& other);
/** Move assignment.
The moved-from object becomes an empty field sequence.
@param other The object to move from.
*/
basic_headers& operator=(basic_headers&& other);
/// Copy constructor.
basic_headers(basic_headers const&);
/// Copy assignment.
basic_headers& operator=(basic_headers const&);
/// Copy constructor.
template<class OtherAlloc>
basic_headers(basic_headers<OtherAlloc> const&);
/// Copy assignment.
template<class OtherAlloc>
basic_headers& operator=(basic_headers<OtherAlloc> const&);
/// Construct from a field sequence.
template<class FwdIt>
basic_headers(FwdIt first, FwdIt last);
/// Returns `true` if the field sequence contains no elements.
bool
empty() const
{
return set_.empty();
}
/// Returns the number of elements in the field sequence.
std::size_t
size() const
{
return set_.size();
}
/** Returns `true` if the specified field exists. */
bool
exists(boost::string_ref const& name) const
{
return set_.find(name, less{}) != set_.end();
}
/** Returns an iterator to the case-insensitive matching header. */
iterator
find(boost::string_ref const& name) const;
/** Returns the value for a case-insensitive matching header, or "" */
boost::string_ref
operator[](boost::string_ref const& name) const;
/** Clear the contents of the basic_headers. */
void
clear() noexcept;
/** Remove a field.
@return The number of fields removed.
*/
std::size_t
erase(boost::string_ref const& name);
/** Insert a field value.
If a field value already exists the new value will be
extended as per RFC2616 Section 4.2.
*/
// VFALCO TODO Consider allowing rvalue references for std::move?
void
insert(boost::string_ref const& name,
boost::string_ref const& value);
/** Insert a field value.
If a field value already exists the new value will be
extended as per RFC2616 Section 4.2.
*/
template<class T,
class = std::enable_if_t<
! std::is_constructible<boost::string_ref, T>::value>>
void
insert(boost::string_ref name, T const& value)
{
insert(name,
boost::lexical_cast<std::string>(value));
}
/** Replace a field value.
The current field value, if any, is removed. Then the
specified value is inserted as if by insert(field, value).
*/
void
replace(boost::string_ref const& name,
boost::string_ref const& value);
/** Replace a field value.
The current field value, if any, is removed. Then the
specified value is inserted as if by insert(field, value).
*/
template<class T,
class = std::enable_if_t<
! std::is_constructible<boost::string_ref, T>::value>>
void
replace(boost::string_ref const& name, T const& value)
{
replace(name,
boost::lexical_cast<std::string>(value));
}
};
} // http
} // beast
#include <beast/http/impl/basic_headers.ipp>
#endif

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include/beast/http/basic_parser.hpp Normal file
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//
// Copyright (c) 2013-2016 Vinnie Falco (vinnie dot falco at gmail 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 BEAST_HTTP_BASIC_PARSER_HPP
#define BEAST_HTTP_BASIC_PARSER_HPP
#include <beast/http/method.hpp>
#include <beast/http/impl/http_parser.h>
#include <beast/type_check.hpp>
#include <boost/asio/buffer.hpp>
#include <boost/system/error_code.hpp>
#include <cstdint>
#include <string>
#include <type_traits>
namespace beast {
namespace http {
/** Parser for producing HTTP requests and responses.
Callbacks:
If a is an object of type Derived, and the call expression is
valid then the stated effects will take place:
a.on_start()
Called once when a new message begins.
a.on_field(std::string field, std::string value)
Called for each field
a.on_headers_complete(error_code&)
Called when all the header fields have been received, but
before any part of the body if any is received.
a.on_request(method_t method, std::string url,
int major, int minor, bool keep_alive, bool upgrade)
Called for requests when all the headers have been received.
This will precede any content body.
When keep_alive is false:
* Server roles respond with a "Connection: close" header.
* Client roles close the connection.
a.on_response(int status, std::string text,
int major, int minor, bool keep_alive,
bool upgrade)
Called for responses when all the headers have been received.
This will precede any content body.
When keep_alive is `false`:
* Client roles close the connection.
* Server roles respond with a "Connection: close" header.
This function should return `true` if upgrade is false and
a content body is expected. When upgrade is true, no
content-body is expected, and the return value is ignored.
a.on_body(void const* data, std::size_t bytes, error_code&)
Called zero or more times for the content body. Any transfer
encoding is already decoded in the memory pointed to by data.
a.on_complete()
Called when parsing completes successfully.
The parser uses traits to determine if the callback is possible.
If the Derived type omits the callbacks, they are simply skipped
with no compilation error.
*/
/*
VFALCO TODO is_call_possible, enable_if_t on Derived calls
use boost::string_ref instead of std::string
*/
template<class Derived>
class basic_parser
{
http_parser state_;
boost::system::error_code* ec_;
bool complete_ = false;
std::string url_;
std::string status_;
std::string field_;
std::string value_;
public:
using error_code = boost::system::error_code;
/** Move constructor.
The state of the moved-from object is undefined,
but safe to destroy.
*/
basic_parser(basic_parser&& other);
/** Move assignment.
The state of the moved-from object is undefined,
but safe to destroy.
*/
basic_parser&
operator=(basic_parser&& other);
/** Copy constructor. */
basic_parser(basic_parser const& other);
/** Copy assignment. */
basic_parser& operator=(basic_parser const& other);
/** Construct the parser.
@param request If `true`, the parser is setup for a request.
*/
explicit
basic_parser(bool request) noexcept;
/** Returns `true` if parsing is complete.
This is only defined when no errors have been returned.
*/
bool
complete() const noexcept
{
return complete_;
}
/** Write data to the parser.
@param data A pointer to a buffer representing the input sequence.
@param size The number of bytes in the buffer pointed to by data.
@throws boost::system::system_error Thrown on failure.
@return The number of bytes consumed in the input sequence.
*/
std::size_t
write(void const* data, std::size_t size)
{
error_code ec;
auto const used = write(data, size, ec);
if(ec)
throw boost::system::system_error{ec};
return used;
}
/** Write data to the parser.
@param data A pointer to a buffer representing the input sequence.
@param size The number of bytes in the buffer pointed to by data.
@param ec Set to the error, if any error occurred.
@return The number of bytes consumed in the input sequence.
*/
std::size_t
write(void const* data, std::size_t size,
error_code& ec);
/** Write data to the parser.
@param buffers An object meeting the requirements of
ConstBufferSequence that represents the input sequence.
@throws boost::system::system_error Thrown on failure.
@return The number of bytes consumed in the input sequence.
*/
template<class ConstBufferSequence>
std::size_t
write(ConstBufferSequence const& buffers)
{
error_code ec;
auto const used = write(buffers, ec);
if(ec)
throw boost::system::system_error{ec};
return used;
}
/** Write data to the parser.
@param buffers An object meeting the requirements of
ConstBufferSequence that represents the input sequence.
@param ec Set to the error, if any error occurred.
@return The number of bytes consumed in the input sequence.
*/
template<class ConstBufferSequence>
std::size_t
write(ConstBufferSequence const& buffers,
error_code& ec);
/** Called to indicate the end of file.
HTTP needs to know where the end of the stream is. For example,
sometimes servers send responses without Content-Length and
expect the client to consume input (for the body) until EOF.
Callbacks and errors will still be processed as usual.
@note This is typically called when a socket read returns eof.
@throws boost::system::system_error Thrown on failure.
*/
void
write_eof()
{
error_code ec;
write_eof(ec);
if(ec)
throw boost::system::system_error{ec};
}
/** Called to indicate the end of file.
HTTP needs to know where the end of the stream is. For example,
sometimes servers send responses without Content-Length and
expect the client to consume input (for the body) until EOF.
Callbacks and errors will still be processed as usual.
@note This is typically called when a socket read returns eof.
@param ec Set to the error, if any error occurred.
*/
void
write_eof(error_code& ec);
private:
Derived&
impl()
{
return *static_cast<Derived*>(this);
}
template<class C>
class has_on_start_t
{
template<class T, class R =
decltype(std::declval<T>().on_start(), std::true_type{})>
static R check(int);
template <class>
static std::false_type check(...);
using type = decltype(check<C>(0));
public:
static bool const value = type::value;
};
template<class C>
using has_on_start =
std::integral_constant<bool, has_on_start_t<C>::value>;
void
call_on_start(std::true_type)
{
impl().on_start();
}
void
call_on_start(std::false_type)
{
}
template<class C>
class has_on_field_t
{
template<class T, class R =
decltype(std::declval<T>().on_field(
std::declval<std::string const&>(),
std::declval<std::string const&>()),
std::true_type{})>
static R check(int);
template <class>
static std::false_type check(...);
using type = decltype(check<C>(0));
public:
static bool const value = type::value;
};
template<class C>
using has_on_field =
std::integral_constant<bool, has_on_field_t<C>::value>;
void
call_on_field(std::string const& field,
std::string const& value, std::true_type)
{
impl().on_field(field, value);
}
void
call_on_field(std::string const&, std::string const&,
std::false_type)
{
}
template<class C>
class has_on_headers_complete_t
{
template<class T, class R =
decltype(std::declval<T>().on_headers_complete(
std::declval<error_code&>()), std::true_type{})>
static R check(int);
template <class>
static std::false_type check(...);
using type = decltype(check<C>(0));
public:
static bool const value = type::value;
};
template<class C>
using has_on_headers_complete =
std::integral_constant<bool, has_on_headers_complete_t<C>::value>;
void
call_on_headers_complete(error_code& ec, std::true_type)
{
impl().on_headers_complete(ec);
}
void
call_on_headers_complete(error_code&, std::false_type)
{
}
template<class C>
class has_on_request_t
{
template<class T, class R =
decltype(std::declval<T>().on_request(
std::declval<method_t>(), std::declval<std::string>(),
std::declval<int>(), std::declval<int>(),
std::declval<bool>(), std::declval<bool>()),
std::true_type{})>
static R check(int);
template <class>
static std::false_type check(...);
using type = decltype(check<C>(0));
public:
static bool const value = type::value;
};
template<class C>
using has_on_request =
std::integral_constant<bool, has_on_request_t<C>::value>;
void
call_on_request(method_t method, std::string url,
int major, int minor, bool keep_alive, bool upgrade,
std::true_type)
{
impl().on_request(
method, url, major, minor, keep_alive, upgrade);
}
void
call_on_request(method_t, std::string, int, int, bool, bool,
std::false_type)
{
}
template<class C>
class has_on_response_t
{
template<class T, class R =
decltype(std::declval<T>().on_response(
std::declval<int>(), std::declval<std::string>,
std::declval<int>(), std::declval<int>(),
std::declval<bool>(), std::declval<bool>()),
std::true_type{})>
static R check(int);
template <class>
static std::false_type check(...);
#if 0
using type = decltype(check<C>(0));
#else
// VFALCO Trait seems broken for http::parser
using type = std::true_type;
#endif
public:
static bool const value = type::value;
};
template<class C>
using has_on_response =
std::integral_constant<bool, has_on_response_t<C>::value>;
bool
call_on_response(int status, std::string text,
int major, int minor, bool keep_alive, bool upgrade,
std::true_type)
{
return impl().on_response(
status, text, major, minor, keep_alive, upgrade);
}
bool
call_on_response(int, std::string, int, int, bool, bool,
std::false_type)
{
// VFALCO Certainly incorrect
return true;
}
template<class C>
class has_on_body_t
{
template<class T, class R =
decltype(std::declval<T>().on_body(
std::declval<void const*>(), std::declval<std::size_t>(),
std::declval<error_code&>()), std::true_type{})>
static R check(int);
template <class>
static std::false_type check(...);
using type = decltype(check<C>(0));
public:
static bool const value = type::value;
};
template<class C>
using has_on_body =
std::integral_constant<bool, has_on_body_t<C>::value>;
void
call_on_body(void const* data, std::size_t bytes,
error_code& ec, std::true_type)
{
impl().on_body(data, bytes, ec);
}
void
call_on_body(void const*, std::size_t,
error_code&, std::false_type)
{
}
template<class C>
class has_on_complete_t
{
template<class T, class R =
decltype(std::declval<T>().on_complete(), std::true_type{})>
static R check(int);
template <class>
static std::false_type check(...);
using type = decltype(check<C>(0));
public:
static bool const value = type::value;
};
template<class C>
using has_on_complete =
std::integral_constant<bool, has_on_complete_t<C>::value>;
void
call_on_complete(std::true_type)
{
impl().on_complete();
}
void
call_on_complete(std::false_type)
{
}
void
check_header();
static int cb_message_start(http_parser*);
static int cb_url(http_parser*, char const*, std::size_t);
static int cb_status(http_parser*, char const*, std::size_t);
static int cb_header_field(http_parser*, char const*, std::size_t);
static int cb_header_value(http_parser*, char const*, std::size_t);
static int cb_headers_complete(http_parser*);
static int cb_body(http_parser*, char const*, std::size_t);
static int cb_message_complete(http_parser*);
static int cb_chunk_header(http_parser*);
static int cb_chunk_complete(http_parser*);
struct hooks_t : http_parser_settings
{
hooks_t()
{
http_parser_settings_init(this);
on_message_begin = &basic_parser::cb_message_start;
on_url = &basic_parser::cb_url;
on_status = &basic_parser::cb_status;
on_header_field = &basic_parser::cb_header_field;
on_header_value = &basic_parser::cb_header_value;
on_headers_complete = &basic_parser::cb_headers_complete;
on_body = &basic_parser::cb_body;
on_message_complete = &basic_parser::cb_message_complete;
on_chunk_header = &basic_parser::cb_chunk_header;
on_chunk_complete = &basic_parser::cb_chunk_complete;
}
};
static
http_parser_settings const*
hooks();
};
template<class Derived>
template<class ConstBufferSequence>
std::size_t
basic_parser<Derived>::write(
ConstBufferSequence const& buffers, error_code& ec)
{
static_assert(beast::is_ConstBufferSequence<
ConstBufferSequence>::value,
"ConstBufferSequence requirements not met");
using boost::asio::buffer_cast;
using boost::asio::buffer_size;
std::size_t bytes_used = 0;
for (auto const& buffer : buffers)
{
auto const n = write(
buffer_cast<void const*>(buffer),
buffer_size(buffer), ec);
if(ec)
return 0;
bytes_used += n;
if(complete())
break;
}
return bytes_used;
}
template<class Derived>
http_parser_settings const*
basic_parser<Derived>::hooks()
{
static hooks_t const h;
return &h;
}
} // http
} // beast
#include <beast/http/impl/basic_parser.ipp>
#endif

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//
// Copyright (c) 2013-2016 Vinnie Falco (vinnie dot falco at gmail 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 BEAST_HTTP_CHUNK_ENCODE_HPP
#define BEAST_HTTP_CHUNK_ENCODE_HPP
#include <boost/asio/buffer.hpp>
#include <algorithm>
#include <array>
#include <cassert>
#include <cstddef>
#include <iterator>
#include <type_traits>
namespace beast {
namespace http {
namespace detail {
template <class Buffers>
class chunk_encoded_buffers
{
private:
using const_buffer = boost::asio::const_buffer;
Buffers buffers_;
const_buffer head_;
const_buffer tail_;
// Storage for the longest hex string we might need, plus delimiters.
std::array<char, 2 * sizeof(std::size_t) + 2> data_;
public:
using value_type = boost::asio::const_buffer;
class const_iterator;
chunk_encoded_buffers() = delete;
chunk_encoded_buffers (chunk_encoded_buffers const&) = default;
chunk_encoded_buffers& operator= (chunk_encoded_buffers const&) = default;
chunk_encoded_buffers (Buffers const& buffers, bool final_chunk);
const_iterator
begin() const
{
return const_iterator(*this, false);
}
const_iterator
end() const
{
return const_iterator(*this, true);
}
private:
// Unchecked conversion of unsigned to hex string
template<class OutIter, class Unsigned>
static
std::enable_if_t<std::is_unsigned<Unsigned>::value, OutIter>
to_hex(OutIter const first, OutIter const last, Unsigned n);
};
template <class Buffers>
class chunk_encoded_buffers<Buffers>::const_iterator
: public std::iterator<std::bidirectional_iterator_tag, const_buffer>
{
private:
using iterator = typename Buffers::const_iterator;
enum class Where { head, input, end };
chunk_encoded_buffers const* buffers_;
Where where_;
iterator iter_;
public:
const_iterator();
const_iterator (const_iterator const&) = default;
const_iterator& operator= (const_iterator const&) = default;
bool operator== (const_iterator const& other) const;
bool operator!= (const_iterator const& other) const;
const_iterator& operator++();
const_iterator& operator--();
const_iterator operator++(int) const;
const_iterator operator--(int) const;
const_buffer operator*() const;
private:
friend class chunk_encoded_buffers;
const_iterator(chunk_encoded_buffers const& buffers, bool past_the_end);
};
//------------------------------------------------------------------------------
template <class Buffers>
chunk_encoded_buffers<Buffers>::chunk_encoded_buffers (
Buffers const& buffers, bool final_chunk)
: buffers_(buffers)
{
auto const size = boost::asio::buffer_size(buffers);
data_[data_.size() - 2] = '\r';
data_[data_.size() - 1] = '\n';
auto pos = to_hex(data_.begin(), data_.end() - 2, size);
head_ = const_buffer(&*pos,
std::distance(pos, data_.end()));
if (size > 0 && final_chunk)
tail_ = const_buffer("\r\n0\r\n\r\n", 7);
else
tail_ = const_buffer("\r\n", 2);
}
template <class Buffers>
template <class OutIter, class Unsigned>
std::enable_if_t<std::is_unsigned<Unsigned>::value, OutIter>
chunk_encoded_buffers<Buffers>::to_hex(
OutIter const first, OutIter const last, Unsigned n)
{
assert(first != last);
OutIter iter = last;
if(n == 0)
{
*--iter = '0';
return iter;
}
while(n)
{
assert(iter != first);
*--iter = "0123456789abcdef"[n&0xf];
n>>=4;
}
return iter;
}
template <class Buffers>
chunk_encoded_buffers<Buffers>::const_iterator::const_iterator()
: buffers_(nullptr)
, where_(Where::end)
{
}
template <class Buffers>
bool
chunk_encoded_buffers<Buffers>::const_iterator::operator==(
const_iterator const& other) const
{
return buffers_ == other.buffers_ &&
where_ == other.where_ && iter_ == other.iter_;
}
template <class Buffers>
bool
chunk_encoded_buffers<Buffers>::const_iterator::operator!=(
const_iterator const& other) const
{
return buffers_ != other.buffers_ ||
where_ != other.where_ || iter_ != other.iter_;
}
template <class Buffers>
auto
chunk_encoded_buffers<Buffers>::const_iterator::operator++() ->
const_iterator&
{
assert(buffers_);
assert(where_ != Where::end);
if (where_ == Where::head)
where_ = Where::input;
else if (iter_ != buffers_->buffers_.end())
++iter_;
else
where_ = Where::end;
return *this;
}
template <class Buffers>
auto
chunk_encoded_buffers<Buffers>::const_iterator::operator--() ->
const_iterator&
{
assert(buffers_);
assert(where_ != Where::head);
if (where_ == Where::end)
where_ = Where::input;
else if (iter_ != buffers_->buffers_.begin())
--iter_;
else
where_ = Where::head;
return *this;
}
template <class Buffers>
auto
chunk_encoded_buffers<Buffers>::const_iterator::operator++(int) const ->
const_iterator
{
auto iter = *this;
++iter;
return iter;
}
template <class Buffers>
auto
chunk_encoded_buffers<Buffers>::const_iterator::operator--(int) const ->
const_iterator
{
auto iter = *this;
--iter;
return iter;
}
template <class Buffers>
auto
chunk_encoded_buffers<Buffers>::const_iterator::operator*() const ->
const_buffer
{
assert(buffers_);
assert(where_ != Where::end);
if (where_ == Where::head)
return buffers_->head_;
if (iter_ != buffers_->buffers_.end())
return *iter_;
return buffers_->tail_;
}
template <class Buffers>
chunk_encoded_buffers<Buffers>::const_iterator::const_iterator(
chunk_encoded_buffers const& buffers, bool past_the_end)
: buffers_(&buffers)
, where_(past_the_end ? Where::end : Where::head)
, iter_(past_the_end ? buffers_->buffers_.end() :
buffers_->buffers_.begin())
{
}
} // detail
/** Returns a chunk-encoded BufferSequence.
See:
http://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.6.1
@param buffers The input buffer sequence.
@param final_chunk `true` If this should include a final-chunk.
@return A chunk-encoded ConstBufferSequence representing the input.
*/
template<class ConstBufferSequence>
#if GENERATING_DOCS
implementation_defined
#else
detail::chunk_encoded_buffers<ConstBufferSequence>
#endif
chunk_encode(ConstBufferSequence const& buffers,
bool final_chunk = false)
{
return detail::chunk_encoded_buffers<
ConstBufferSequence>{buffers, final_chunk};
}
/// Returns a chunked encoding final chunk.
inline
#if GENERATING_DOCS
implementation_defined
#else
boost::asio::const_buffers_1
#endif
chunk_encode_final()
{
return boost::asio::const_buffers_1(
"0\r\n\r\n", 5);
}
} // http
} // beast
#endif

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//
// Copyright (c) 2013-2016 Vinnie Falco (vinnie dot falco at gmail 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 BEAST_HTTP_DETAIL_ERROR_HPP
#define BEAST_HTTP_DETAIL_ERROR_HPP
#include <beast/http/impl/http_parser.h>
#include <boost/system/error_code.hpp>
namespace beast {
namespace http {
namespace detail {
class message_category
: public boost::system::error_category
{
public:
const char*
name() const noexcept override
{
return "http error";
}
std::string
message(int ev) const override
{
return http_errno_description(
static_cast<http_errno>(ev));
}
boost::system::error_condition
default_error_condition(int ev) const noexcept override
{
return boost::system::error_condition{ev, *this};
}
bool
equivalent(int ev,
boost::system::error_condition const& condition
) const noexcept override
{
return condition.value() == ev &&
&condition.category() == this;
}
bool
equivalent(boost::system::error_code const& error,
int ev) const noexcept override
{
return error.value() == ev &&
&error.category() == this;
}
};
template<class = void>
auto
make_error(int http_errno)
{
static message_category const mc{};
return boost::system::error_code{http_errno, mc};
}
} // detail
} // http
} // beast
#endif

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//
// Copyright (c) 2013-2016 Vinnie Falco (vinnie dot falco at gmail 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 BEAST_HTTP_DETAIL_WRITE_PREPARATION_HPP
#define BEAST_HTTP_DETAIL_WRITE_PREPARATION_HPP
#include <beast/streambuf.hpp>
namespace beast {
namespace http {
namespace detail {
template<class T>
class has_content_length_value
{
template<class U, class R = typename std::is_convertible<
decltype(std::declval<U>().content_length()),
std::size_t>>
static R check(int);
template <class>
static std::false_type check(...);
using type = decltype(check<T>(0));
public:
// `true` if `T` meets the requirements.
static bool const value = type::value;
};
// Determines if the writer can provide the content length
template<class T>
using has_content_length =
std::integral_constant<bool,
has_content_length_value<T>::value>;
template<bool isRequest, class Body, class Headers>
struct write_preparation
{
using headers_type =
basic_headers<std::allocator<char>>;
message<isRequest, Body, Headers> const& msg;
typename Body::writer w;
streambuf sb;
bool chunked;
bool close;
explicit
write_preparation(
message<isRequest, Body, Headers> const& msg_)
: msg(msg_)
, w(msg)
{
}
void
init(error_code& ec)
{
w.init(ec);
if(ec)
return;
// VFALCO TODO This implementation requires making a
// copy of the headers, we can do better.
// VFALCO Should we be using handler_alloc?
headers_type h(msg.headers.begin(), msg.headers.end());
set_content_length(h, has_content_length<
typename Body::writer>{});
// VFALCO TODO Keep-Alive
if(close)
{
if(msg.version >= 11)
h.insert("Connection", "close");
}
else
{
if(msg.version < 11)
h.insert("Connection", "keep-alive");
}
msg.write_firstline(sb);
write_fields(sb, h);
detail::write(sb, "\r\n");
}
private:
void
set_content_length(headers_type& h,
std::true_type)
{
close = false;
chunked = false;
h.insert("Content-Length", w.content_length());
}
void
set_content_length(headers_type& h,
std::false_type)
{
if(msg.version >= 11)
{
close = false;
chunked = true;
h.insert("Transfer-Encoding", "chunked");
}
else
{
close = true;
chunked = false;
}
}
};
} // detail
} // http
} // beast
#endif

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//
// Copyright (c) 2013-2016 Vinnie Falco (vinnie dot falco at gmail 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 BEAST_HTTP_DETAIL_WRITES_HPP
#define BEAST_HTTP_DETAIL_WRITES_HPP
#include <beast/type_check.hpp>
#include <boost/lexical_cast.hpp>
#include <boost/utility/string_ref.hpp>
#include <string>
#include <type_traits>
#include <utility>
namespace beast {
namespace http {
namespace detail {
template<class Streambuf, class T,
class = std::enable_if_t<is_Streambuf<Streambuf>::value>>
void
write(Streambuf& streambuf, T&& t)
{
using boost::asio::buffer;
using boost::asio::buffer_copy;
auto const& s =
boost::lexical_cast<std::string>(
std::forward<T>(t));
streambuf.commit(buffer_copy(
streambuf.prepare(s.size()), buffer(s)));
}
template<class Streambuf, std::size_t N,
class = std::enable_if_t< (N>0) &&
is_Streambuf<Streambuf>::value>>
void
write(Streambuf& streambuf, char const(&s)[N])
{
using boost::asio::buffer;
using boost::asio::buffer_copy;
streambuf.commit(buffer_copy(
streambuf.prepare(N), buffer(s, N-1)));
}
template<class Streambuf,
class = std::enable_if_t<is_Streambuf<Streambuf>::value>>
void
write(Streambuf& streambuf, boost::string_ref const& s)
{
using boost::asio::buffer;
using boost::asio::buffer_copy;
streambuf.commit(buffer_copy(
streambuf.prepare(s.size()),
buffer(s.data(), s.size())));
}
} // detail
} // http
} // beast
#endif

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//
// Copyright (c) 2013-2016 Vinnie Falco (vinnie dot falco at gmail 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 BEAST_HTTP_EMPTY_BODY_HPP
#define BEAST_HTTP_EMPTY_BODY_HPP
#include <beast/http/error.hpp>
#include <beast/http/message.hpp>
#include <beast/streambuf.hpp>
#include <boost/asio/buffer.hpp>
#include <memory>
#include <string>
namespace beast {
namespace http {
/** An empty content-body.
*/
struct empty_body
{
struct value_type
{
};
struct reader
{
template<bool isRequest, class Allocator>
explicit
reader(message<isRequest, empty_body, Allocator>&)
{
}
void
write(void const*, std::size_t, error_code&)
{
}
};
struct writer
{
template<bool isRequest, class Allocator>
explicit
writer(message<isRequest, empty_body, Allocator> const& m)
{
}
void
init(error_code& ec)
{
}
std::size_t
content_length() const
{
return 0;
}
template<class Write>
boost::tribool
operator()(resume_context&&, error_code&, Write&& write)
{
write(boost::asio::null_buffers{});
return true;
}
};
};
} // http
} // beast
#endif

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//
// Copyright (c) 2013-2016 Vinnie Falco (vinnie dot falco at gmail 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 BEAST_HTTP_ERROR_HPP
#define BEAST_HTTP_ERROR_HPP
#include <boost/system/error_code.hpp>
namespace beast {
namespace http {
using error_code = boost::system::error_code;
} // http
} // beast
#endif

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//------------------------------------------------------------------------------
/*
This file is part of Beast: https://github.com/vinniefalco/Beast
Copyright 2013, Vinnie Falco <vinnie.falco@gmail.com>
Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
//==============================================================================
#ifndef BEAST_HTTP_FIELDS_H_INCLUDED
#define BEAST_HTTP_FIELDS_H_INCLUDED
#include <array>
namespace beast {
namespace http {
#if defined(__clang__)
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wmissing-braces"
#endif // defined(__clang__)
template<class = void>
auto const&
common_fields()
{
// Must be sorted
static std::array<char const*, 82> constexpr h{
"Accept"
,"Accept-Charset"
,"Accept-Datetime"
,"Accept-Encoding"
,"Accept-Language"
,"Accept-Ranges"
,"Access-Control-Allow-Credentials"
,"Access-Control-Allow-Headers"
,"Access-Control-Allow-Methods"
,"Access-Control-Allow-Origin"
,"Access-Control-Expose-Headers"
,"Access-Control-Max-Age"
,"Access-Control-Request-Headers"
,"Access-Control-Request-Method"
,"Age"
,"Allow"
,"Authorization"
,"Cache-Control"
,"Connection"
,"Content-Disposition"
,"Content-Encoding"
,"Content-Language"
,"Content-Length"
,"Content-Location"
,"Content-MD5"
,"Content-Range"
,"Content-Type"
,"Cookie"
,"DNT"
,"Date"
,"ETag"
,"Expect"
,"Expires"
,"From"
,"Front-End-Https"
,"Host"
,"If-Match"
,"If-Modified-Since"
,"If-None-Match"
,"If-Range"
,"If-Unmodified-Since"
,"Keep-Alive"
,"Last-Modified"
,"Link"
,"Location"
,"Max-Forwards"
,"Origin"
,"P3P"
,"Pragma"
,"Proxy-Authenticate"
,"Proxy-Authorization"
,"Proxy-Connection"
,"Range"
,"Referer"
,"Refresh"
,"Retry-After"
,"Server"
,"Set-Cookie"
,"Strict-Transport-Security"
,"TE"
,"Timestamp"
,"Trailer"
,"Transfer-Encoding"
,"Upgrade"
,"User-Agent"
,"VIP"
,"Vary"
,"Via"
,"WWW-Authenticate"
,"Warning"
,"X-Accel-Redirect"
,"X-Content-Security-Policy-Report-Only"
,"X-Content-Type-Options"
,"X-Forwarded-For"
,"X-Forwarded-Proto"
,"X-Frame-Options"
,"X-Powered-By"
,"X-Real-IP"
,"X-Requested-With"
,"X-UA-Compatible"
,"X-Wap-Profile"
,"X-XSS-Protection"
};
return h;
}
#if defined(__clang__)
#pragma clang diagnostic pop
#endif // defined(__clang__)
} // http
} // beast
#endif

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//
// Copyright (c) 2013-2016 Vinnie Falco (vinnie dot falco at gmail 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 BEAST_HTTP_HEADERS_HPP
#define BEAST_HTTP_HEADERS_HPP
#include <beast/http/basic_headers.hpp>
#include <memory>
namespace beast {
namespace http {
template<class Allocator>
using headers = basic_headers<Allocator>;
using http_headers =
basic_headers<std::allocator<char>>;
} // http
} // beast
#endif

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//
// Copyright (c) 2013-2016 Vinnie Falco (vinnie dot falco at gmail 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 BEAST_HTTP_IMPL_BASIC_HEADERS_IPP
#define BEAST_HTTP_IMPL_BASIC_HEADERS_IPP
#include <beast/http/detail/writes.hpp>
#include <beast/type_check.hpp>
namespace beast {
namespace http {
namespace detail {
inline
auto
basic_headers_base::begin() const ->
const_iterator
{
return list_.cbegin();
}
inline
auto
basic_headers_base::end() const ->
const_iterator
{
return list_.cend();
}
inline
auto
basic_headers_base::cbegin() const ->
const_iterator
{
return list_.cbegin();
}
inline
auto
basic_headers_base::cend() const ->
const_iterator
{
return list_.cend();
}
} // detail
//------------------------------------------------------------------------------
template<class Allocator>
void
basic_headers<Allocator>::
delete_all()
{
for(auto it = list_.begin(); it != list_.end();)
{
auto& e = *it++;
e.~element();
alloc_traits::deallocate(
this->member(), &e, 1);
}
}
template<class Allocator>
inline
void
basic_headers<Allocator>::
move_assign(basic_headers& other, std::false_type)
{
if(this->member() != other.member())
{
copy_from(other);
other.clear();
}
else
{
set_ = std::move(other.set_);
list_ = std::move(other.list_);
}
}
template<class Allocator>
inline
void
basic_headers<Allocator>::
move_assign(basic_headers& other, std::true_type)
{
this->member() = std::move(other.member());
set_ = std::move(other.set_);
list_ = std::move(other.list_);
}
template<class Allocator>
inline
void
basic_headers<Allocator>::
copy_assign(basic_headers const& other, std::false_type)
{
copy_from(other);
}
template<class Allocator>
inline
void
basic_headers<Allocator>::
copy_assign(basic_headers const& other, std::true_type)
{
this->member() = other.member();
copy_from(other);
}
//------------------------------------------------------------------------------
template<class Allocator>
basic_headers<Allocator>::
~basic_headers()
{
delete_all();
}
template<class Allocator>
basic_headers<Allocator>::
basic_headers(Allocator const& alloc)
: beast::detail::empty_base_optimization<
alloc_type>(alloc)
{
}
template<class Allocator>
basic_headers<Allocator>::
basic_headers(basic_headers&& other)
: beast::detail::empty_base_optimization<alloc_type>(
std::move(other.member()))
, detail::basic_headers_base(
std::move(other.set_), std::move(other.list_))
{
other.list_.clear();
other.set_.clear();
}
template<class Allocator>
auto
basic_headers<Allocator>::
operator=(basic_headers&& other) ->
basic_headers&
{
if(this == &other)
return *this;
clear();
move_assign(other, std::integral_constant<bool,
alloc_traits::propagate_on_container_move_assignment::value>{});
return *this;
}
template<class Allocator>
basic_headers<Allocator>::
basic_headers(basic_headers const& other)
: basic_headers(alloc_traits::
select_on_container_copy_construction(other.member()))
{
copy_from(other);
}
template<class Allocator>
auto
basic_headers<Allocator>::
operator=(basic_headers const& other) ->
basic_headers&
{
clear();
copy_assign(other, std::integral_constant<bool,
alloc_traits::propagate_on_container_copy_assignment::value>{});
return *this;
}
template<class Allocator>
template<class OtherAlloc>
basic_headers<Allocator>::
basic_headers(basic_headers<OtherAlloc> const& other)
{
copy_from(other);
}
template<class Allocator>
template<class OtherAlloc>
auto
basic_headers<Allocator>::
operator=(basic_headers<OtherAlloc> const& other) ->
basic_headers&
{
clear();
copy_from(other);
return *this;
}
template<class Allocator>
template<class FwdIt>
basic_headers<Allocator>::
basic_headers(FwdIt first, FwdIt last)
{
for(;first != last; ++first)
insert(first->name(), first->value());
}
template<class Allocator>
auto
basic_headers<Allocator>::
find(boost::string_ref const& name) const ->
iterator
{
auto const it = set_.find(name, less{});
if(it == set_.end())
return list_.end();
return list_.iterator_to(*it);
}
template<class Allocator>
boost::string_ref
basic_headers<Allocator>::
operator[](boost::string_ref const& name) const
{
// VFALCO This none object looks sketchy
static boost::string_ref const none;
auto const it = find(name);
if(it == end())
return none;
return it->second;
}
template<class Allocator>
void
basic_headers<Allocator>::
clear() noexcept
{
delete_all();
list_.clear();
set_.clear();
}
template<class Allocator>
std::size_t
basic_headers<Allocator>::
erase(boost::string_ref const& name)
{
auto const it = set_.find(name, less{});
if(it == set_.end())
return 0;
auto& e = *it;
set_.erase(set_.iterator_to(e));
list_.erase(list_.iterator_to(e));
alloc_traits::deallocate(this->member(), &e, 1);
return 1;
}
template<class Allocator>
void
basic_headers<Allocator>::
insert(boost::string_ref const& name,
boost::string_ref const& value)
{
typename set_t::insert_commit_data d;
auto const result =
set_.insert_check(name, less{}, d);
if (result.second)
{
auto const p = alloc_traits::allocate(
this->member(), 1);
alloc_traits::construct(
this->member(), p, name, value);
list_.push_back(*p);
set_.insert_commit(*p, d);
return;
}
// If field already exists, insert comma
// separated value as per RFC2616 section 4.2
auto& cur = result.first->data.second;
cur.reserve(cur.size() + 1 + value.size());
cur.append(1, ',');
cur.append(value.data(), value.size());
}
template<class Allocator>
void
basic_headers<Allocator>::
replace(boost::string_ref const& name,
boost::string_ref const& value)
{
erase(name);
insert(name, value);
}
} // http
} // beast
#endif

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//
// Copyright (c) 2013-2016 Vinnie Falco (vinnie dot falco at gmail 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 BEAST_HTTP_IMPL_BASIC_PARSER_IPP
#define BEAST_HTTP_IMPL_BASIC_PARSER_IPP
#include <beast/http/impl/http_parser.h>
#include <beast/http/rfc2616.hpp>
#include <beast/http/detail/error.hpp>
namespace beast {
namespace http {
namespace detail {
inline
beast::http::method_t
convert_http_method(http_method m)
{
using namespace beast;
switch (m)
{
case HTTP_DELETE: return http::method_t::http_delete;
case HTTP_GET: return http::method_t::http_get;
case HTTP_HEAD: return http::method_t::http_head;
case HTTP_POST: return http::method_t::http_post;
case HTTP_PUT: return http::method_t::http_put;
// pathological
case HTTP_CONNECT: return http::method_t::http_connect;
case HTTP_OPTIONS: return http::method_t::http_options;
case HTTP_TRACE: return http::method_t::http_trace;
// webdav
case HTTP_COPY: return http::method_t::http_copy;
case HTTP_LOCK: return http::method_t::http_lock;
case HTTP_MKCOL: return http::method_t::http_mkcol;
case HTTP_MOVE: return http::method_t::http_move;
case HTTP_PROPFIND: return http::method_t::http_propfind;
case HTTP_PROPPATCH: return http::method_t::http_proppatch;
case HTTP_SEARCH: return http::method_t::http_search;
case HTTP_UNLOCK: return http::method_t::http_unlock;
case HTTP_BIND: return http::method_t::http_bind;
case HTTP_REBIND: return http::method_t::http_rebind;
case HTTP_UNBIND: return http::method_t::http_unbind;
case HTTP_ACL: return http::method_t::http_acl;
// subversion
case HTTP_REPORT: return http::method_t::http_report;
case HTTP_MKACTIVITY: return http::method_t::http_mkactivity;
case HTTP_CHECKOUT: return http::method_t::http_checkout;
case HTTP_MERGE: return http::method_t::http_merge;
// upnp
case HTTP_MSEARCH: return http::method_t::http_msearch;
case HTTP_NOTIFY: return http::method_t::http_notify;
case HTTP_SUBSCRIBE: return http::method_t::http_subscribe;
case HTTP_UNSUBSCRIBE: return http::method_t::http_unsubscribe;
// RFC-5789
case HTTP_PATCH: return http::method_t::http_patch;
case HTTP_PURGE: return http::method_t::http_purge;
// CalDav
case HTTP_MKCALENDAR: return http::method_t::http_mkcalendar;
// RFC-2068, section 19.6.1.2
case HTTP_LINK: return http::method_t::http_link;
case HTTP_UNLINK: return http::method_t::http_unlink;
};
return http::method_t::http_get;
}
} // detail
template<class Derived>
basic_parser<Derived>::
basic_parser(basic_parser&& other)
{
state_ = other.state_;
state_.data = this;
complete_ = other.complete_;
url_ = std::move(other.url_);
status_ = std::move(other.status_);
field_ = std::move(other.field_);
value_ = std::move(other.value_);
}
template<class Derived>
auto
basic_parser<Derived>::operator=(basic_parser&& other) ->
basic_parser&
{
state_ = other.state_;
state_.data = this;
complete_ = other.complete_;
url_ = std::move(other.url_);
status_ = std::move(other.status_);
field_ = std::move(other.field_);
value_ = std::move(other.value_);
return *this;
}
template<class Derived>
basic_parser<Derived>::
basic_parser(basic_parser const& other)
{
state_ = other.state_;
state_.data = this;
complete_ = other.complete_;
url_ = other.url_;
status_ = other.status_;
field_ = other.field_;
value_ = other.value_;
}
template<class Derived>
auto
basic_parser<Derived>::
operator=(basic_parser const& other) ->
basic_parser&
{
state_ = other.state_;
state_.data = this;
complete_ = other.complete_;
url_ = other.url_;
status_ = other.status_;
field_ = other.field_;
value_ = other.value_;
return *this;
}
template<class Derived>
basic_parser<Derived>::basic_parser(bool request) noexcept
{
state_.data = this;
http_parser_init(&state_, request
? http_parser_type::HTTP_REQUEST
: http_parser_type::HTTP_RESPONSE);
}
template<class Derived>
std::size_t
basic_parser<Derived>::write(void const* data,
std::size_t size, error_code& ec)
{
ec_ = &ec;
auto const n = http_parser_execute(
&state_, hooks(),
static_cast<const char*>(data), size);
if(! ec)
ec = detail::make_error(
static_cast<int>(state_.http_errno));
if(ec)
return 0;
return n;
}
template<class Derived>
void
basic_parser<Derived>::write_eof(error_code& ec)
{
ec_ = &ec;
http_parser_execute(
&state_, hooks(), nullptr, 0);
if(! ec)
ec = detail::make_error(
static_cast<int>(state_.http_errno));
}
template<class Derived>
void
basic_parser<Derived>::check_header()
{
if (! value_.empty())
{
rfc2616::trim_right_in_place(value_);
call_on_field(field_, value_,
has_on_field<Derived>{});
field_.clear();
value_.clear();
}
}
template<class Derived>
int
basic_parser<Derived>::cb_message_start(http_parser* p)
{
auto& t = *reinterpret_cast<basic_parser*>(p->data);
t.complete_ = false;
t.url_.clear();
t.status_.clear();
t.field_.clear();
t.value_.clear();
t.call_on_start(has_on_start<Derived>{});
return 0;
}
template<class Derived>
int
basic_parser<Derived>::cb_url(http_parser* p,
char const* in, std::size_t bytes)
{
auto& t = *reinterpret_cast<basic_parser*>(p->data);
t.url_.append(in, bytes);
return 0;
}
template<class Derived>
int
basic_parser<Derived>::cb_status(http_parser* p,
char const* in, std::size_t bytes)
{
auto& t = *reinterpret_cast<basic_parser*>(p->data);
t.status_.append(in, bytes);
return 0;
}
template<class Derived>
int
basic_parser<Derived>::cb_header_field(http_parser* p,
char const* in, std::size_t bytes)
{
auto& t = *reinterpret_cast<basic_parser*>(p->data);
t.check_header();
t.field_.append(in, bytes);
return 0;
}
template<class Derived>
int
basic_parser<Derived>::cb_header_value(http_parser* p,
char const* in, std::size_t bytes)
{
auto& t = *reinterpret_cast<basic_parser*>(p->data);
t.value_.append(in, bytes);
return 0;
}
/* Called when all the headers are complete but before
the content body, if present.
Returning 1 from here tells the nodejs parser
that the message has no body (e.g. a HEAD request).
*/
template<class Derived>
int
basic_parser<Derived>::cb_headers_complete(http_parser* p)
{
auto& t = *reinterpret_cast<basic_parser*>(p->data);
t.check_header();
t.call_on_headers_complete(*t.ec_,
has_on_headers_complete<Derived>{});
if(*t.ec_)
return 1;
bool const keep_alive =
http_should_keep_alive(p) != 0;
if(p->type == http_parser_type::HTTP_REQUEST)
{
t.call_on_request(detail::convert_http_method(
http_method(p->method)), t.url_,
p->http_major, p->http_minor, keep_alive,
p->upgrade, has_on_request<Derived>{});
return 0;
}
return t.call_on_response(p->status_code, t.status_,
p->http_major, p->http_minor, keep_alive,
p->upgrade, has_on_response<Derived>{}) ? 0 : 1;
}
// Called repeatedly for the content body,
// after any transfer-encoding is applied.
template<class Derived>
int
basic_parser<Derived>::cb_body(http_parser* p,
char const* in, std::size_t bytes)
{
auto& t = *reinterpret_cast<basic_parser*>(p->data);
t.call_on_body(in, bytes, *t.ec_, has_on_body<Derived>{});
return *t.ec_ ? 1 : 0;
}
// Called when the both the headers
// and content body (if any) are complete.
template<class Derived>
int
basic_parser<Derived>::cb_message_complete(http_parser* p)
{
auto& t = *reinterpret_cast<basic_parser*>(p->data);
t.complete_ = true;
t.call_on_complete(has_on_complete<Derived>{});
return 0;
}
template<class Derived>
int
basic_parser<Derived>::cb_chunk_header(http_parser*)
{
return 0;
}
template<class Derived>
int
basic_parser<Derived>::cb_chunk_complete(http_parser*)
{
return 0;
}
} // http
} // beast
#endif

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/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#ifndef http_parser_h
#define http_parser_h
#ifdef __cplusplus
extern "C" {
#endif
/* Also update SONAME in the Makefile whenever you change these. */
#define HTTP_PARSER_VERSION_MAJOR 2
#define HTTP_PARSER_VERSION_MINOR 7
#define HTTP_PARSER_VERSION_PATCH 0
#include <sys/types.h>
#if defined(_WIN32) && !defined(__MINGW32__) && \
(!defined(_MSC_VER) || _MSC_VER<1600) && !defined(__WINE__)
#include <BaseTsd.h>
#include <stddef.h>
typedef __int8 int8_t;
typedef unsigned __int8 uint8_t;
typedef __int16 int16_t;
typedef unsigned __int16 uint16_t;
typedef __int32 int32_t;
typedef unsigned __int32 uint32_t;
typedef __int64 int64_t;
typedef unsigned __int64 uint64_t;
#else
#include <stdint.h>
#endif
/* Compile with -DHTTP_PARSER_STRICT=0 to make less checks, but run
* faster
*/
#ifndef HTTP_PARSER_STRICT
# define HTTP_PARSER_STRICT 1
#endif
/* Maximium header size allowed. If the macro is not defined
* before including this header then the default is used. To
* change the maximum header size, define the macro in the build
* environment (e.g. -DHTTP_MAX_HEADER_SIZE=<value>). To remove
* the effective limit on the size of the header, define the macro
* to a very large number (e.g. -DHTTP_MAX_HEADER_SIZE=0x7fffffff)
*/
#ifndef HTTP_MAX_HEADER_SIZE
# define HTTP_MAX_HEADER_SIZE (80*1024)
#endif
typedef struct http_parser http_parser;
typedef struct http_parser_settings http_parser_settings;
/* Callbacks should return non-zero to indicate an error. The parser will
* then halt execution.
*
* The one exception is on_headers_complete. In a HTTP_RESPONSE parser
* returning '1' from on_headers_complete will tell the parser that it
* should not expect a body. This is used when receiving a response to a
* HEAD request which may contain 'Content-Length' or 'Transfer-Encoding:
* chunked' headers that indicate the presence of a body.
*
* Returning `2` from on_headers_complete will tell parser that it should not
* expect neither a body nor any futher responses on this connection. This is
* useful for handling responses to a CONNECT request which may not contain
* `Upgrade` or `Connection: upgrade` headers.
*
* http_data_cb does not return data chunks. It will be called arbitrarily
* many times for each string. E.G. you might get 10 callbacks for "on_url"
* each providing just a few characters more data.
*/
typedef int (*http_data_cb) (http_parser*, const char *at, size_t length);
typedef int (*http_cb) (http_parser*);
/* Request Methods */
#define HTTP_METHOD_MAP(XX) \
XX(0, DELETE, DELETE) \
XX(1, GET, GET) \
XX(2, HEAD, HEAD) \
XX(3, POST, POST) \
XX(4, PUT, PUT) \
/* pathological */ \
XX(5, CONNECT, CONNECT) \
XX(6, OPTIONS, OPTIONS) \
XX(7, TRACE, TRACE) \
/* WebDAV */ \
XX(8, COPY, COPY) \
XX(9, LOCK, LOCK) \
XX(10, MKCOL, MKCOL) \
XX(11, MOVE, MOVE) \
XX(12, PROPFIND, PROPFIND) \
XX(13, PROPPATCH, PROPPATCH) \
XX(14, SEARCH, SEARCH) \
XX(15, UNLOCK, UNLOCK) \
XX(16, BIND, BIND) \
XX(17, REBIND, REBIND) \
XX(18, UNBIND, UNBIND) \
XX(19, ACL, ACL) \
/* subversion */ \
XX(20, REPORT, REPORT) \
XX(21, MKACTIVITY, MKACTIVITY) \
XX(22, CHECKOUT, CHECKOUT) \
XX(23, MERGE, MERGE) \
/* upnp */ \
XX(24, MSEARCH, M-SEARCH) \
XX(25, NOTIFY, NOTIFY) \
XX(26, SUBSCRIBE, SUBSCRIBE) \
XX(27, UNSUBSCRIBE, UNSUBSCRIBE) \
/* RFC-5789 */ \
XX(28, PATCH, PATCH) \
XX(29, PURGE, PURGE) \
/* CalDAV */ \
XX(30, MKCALENDAR, MKCALENDAR) \
/* RFC-2068, section 19.6.1.2 */ \
XX(31, LINK, LINK) \
XX(32, UNLINK, UNLINK) \
enum http_method
{
#define XX(num, name, string) HTTP_##name = num,
HTTP_METHOD_MAP(XX)
#undef XX
};
enum http_parser_type { HTTP_REQUEST, HTTP_RESPONSE, HTTP_BOTH };
/* Flag values for http_parser.flags field */
enum flags
{ F_CHUNKED = 1 << 0
, F_CONNECTION_KEEP_ALIVE = 1 << 1
, F_CONNECTION_CLOSE = 1 << 2
, F_CONNECTION_UPGRADE = 1 << 3
, F_TRAILING = 1 << 4
, F_UPGRADE = 1 << 5
, F_SKIPBODY = 1 << 6
, F_CONTENTLENGTH = 1 << 7
};
/* Map for errno-related constants
*
* The provided argument should be a macro that takes 2 arguments.
*/
#define HTTP_ERRNO_MAP(XX) \
/* No error */ \
XX(OK, "success") \
\
/* Callback-related errors */ \
XX(CB_message_begin, "the on_message_begin callback failed") \
XX(CB_url, "the on_url callback failed") \
XX(CB_header_field, "the on_header_field callback failed") \
XX(CB_header_value, "the on_header_value callback failed") \
XX(CB_headers_complete, "the on_headers_complete callback failed") \
XX(CB_body, "the on_body callback failed") \
XX(CB_message_complete, "the on_message_complete callback failed") \
XX(CB_status, "the on_status callback failed") \
XX(CB_chunk_header, "the on_chunk_header callback failed") \
XX(CB_chunk_complete, "the on_chunk_complete callback failed") \
\
/* Parsing-related errors */ \
XX(INVALID_EOF_STATE, "stream ended at an unexpected time") \
XX(HEADER_OVERFLOW, \
"too many header bytes seen; overflow detected") \
XX(CLOSED_CONNECTION, \
"data received after completed connection: close message") \
XX(INVALID_VERSION, "invalid HTTP version") \
XX(INVALID_STATUS, "invalid HTTP status code") \
XX(INVALID_METHOD, "invalid HTTP method") \
XX(INVALID_URL, "invalid URL") \
XX(INVALID_HOST, "invalid host") \
XX(INVALID_PORT, "invalid port") \
XX(INVALID_PATH, "invalid path") \
XX(INVALID_QUERY_STRING, "invalid query string") \
XX(INVALID_FRAGMENT, "invalid fragment") \
XX(LF_EXPECTED, "LF character expected") \
XX(INVALID_HEADER_TOKEN, "invalid character in header") \
XX(INVALID_CONTENT_LENGTH, \
"invalid character in content-length header") \
XX(UNEXPECTED_CONTENT_LENGTH, \
"unexpected content-length header") \
XX(INVALID_CHUNK_SIZE, \
"invalid character in chunk size header") \
XX(INVALID_CONSTANT, "invalid constant string") \
XX(INVALID_INTERNAL_STATE, "encountered unexpected internal state")\
XX(STRICT, "strict mode assertion failed") \
XX(PAUSED, "parser is paused") \
XX(UNKNOWN, "an unknown error occurred")
/* Define HPE_* values for each errno value above */
#define HTTP_ERRNO_GEN(n, s) HPE_##n,
enum http_errno {
HTTP_ERRNO_MAP(HTTP_ERRNO_GEN)
};
#undef HTTP_ERRNO_GEN
/* Get an http_errno value from an http_parser */
#define HTTP_PARSER_ERRNO(p) ((enum http_errno) (p)->http_errno)
struct http_parser {
/** PRIVATE **/
unsigned int type : 2; /* enum http_parser_type */
unsigned int flags : 8; /* F_* values from 'flags' enum; semi-public */
unsigned int state : 7; /* enum state from http_parser.c */
unsigned int header_state : 7; /* enum header_state from http_parser.c */
unsigned int index : 7; /* index into current matcher */
unsigned int lenient_http_headers : 1;
uint32_t nread; /* # bytes read in various scenarios */
uint64_t content_length; /* # bytes in body (0 if no Content-Length header) */
/** READ-ONLY **/
unsigned short http_major;
unsigned short http_minor;
unsigned int status_code : 16; /* responses only */
unsigned int method : 8; /* requests only */
unsigned int http_errno : 7;
/* 1 = Upgrade header was present and the parser has exited because of that.
* 0 = No upgrade header present.
* Should be checked when http_parser_execute() returns in addition to
* error checking.
*/
unsigned int upgrade : 1;
/** PUBLIC **/
void *data; /* A pointer to get hook to the "connection" or "socket" object */
};
struct http_parser_settings {
http_cb on_message_begin;
http_data_cb on_url;
http_data_cb on_status;
http_data_cb on_header_field;
http_data_cb on_header_value;
http_cb on_headers_complete;
http_data_cb on_body;
http_cb on_message_complete;
/* When on_chunk_header is called, the current chunk length is stored
* in parser->content_length.
*/
http_cb on_chunk_header;
http_cb on_chunk_complete;
};
enum http_parser_url_fields
{ UF_SCHEMA = 0
, UF_HOST = 1
, UF_PORT = 2
, UF_PATH = 3
, UF_QUERY = 4
, UF_FRAGMENT = 5
, UF_USERINFO = 6
, UF_MAX = 7
};
/* Result structure for http_parser_parse_url().
*
* Callers should index into field_data[] with UF_* values iff field_set
* has the relevant (1 << UF_*) bit set. As a courtesy to clients (and
* because we probably have padding left over), we convert any port to
* a uint16_t.
*/
struct http_parser_url {
uint16_t field_set; /* Bitmask of (1 << UF_*) values */
uint16_t port; /* Converted UF_PORT string */
struct {
uint16_t off; /* Offset into buffer in which field starts */
uint16_t len; /* Length of run in buffer */
} field_data[UF_MAX];
};
/* Returns the library version. Bits 16-23 contain the major version number,
* bits 8-15 the minor version number and bits 0-7 the patch level.
* Usage example:
*
* unsigned long version = http_parser_version();
* unsigned major = (version >> 16) & 255;
* unsigned minor = (version >> 8) & 255;
* unsigned patch = version & 255;
* printf("http_parser v%u.%u.%u\n", major, minor, patch);
*/
unsigned long http_parser_version(void);
void http_parser_init(http_parser *parser, enum http_parser_type type);
/* Initialize http_parser_settings members to 0
*/
void http_parser_settings_init(http_parser_settings *settings);
/* Executes the parser. Returns number of parsed bytes. Sets
* `parser->http_errno` on error. */
size_t http_parser_execute(http_parser *parser,
const http_parser_settings *settings,
const char *data,
size_t len);
/* If http_should_keep_alive() in the on_headers_complete or
* on_message_complete callback returns 0, then this should be
* the last message on the connection.
* If you are the server, respond with the "Connection: close" header.
* If you are the client, close the connection.
*/
int http_should_keep_alive(const http_parser *parser);
/* Returns a string version of the HTTP method. */
const char *http_method_str(enum http_method m);
/* Return a string name of the given error */
const char *http_errno_name(enum http_errno err);
/* Return a string description of the given error */
const char *http_errno_description(enum http_errno err);
/* Initialize all http_parser_url members to 0 */
void http_parser_url_init(struct http_parser_url *u);
/* Parse a URL; return nonzero on failure */
int http_parser_parse_url(const char *buf, size_t buflen,
int is_connect,
struct http_parser_url *u);
/* Pause or un-pause the parser; a nonzero value pauses */
void http_parser_pause(http_parser *parser, int paused);
/* Checks if this is the final chunk of the body. */
int http_body_is_final(const http_parser *parser);
#ifdef __cplusplus
}
#endif
#endif

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//
// Copyright (c) 2013-2016 Vinnie Falco (vinnie dot falco at gmail 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 BEAST_HTTP_IMPL_MESSAGE_IPP
#define BEAST_HTTP_IMPL_MESSAGE_IPP
#include <beast/http/chunk_encode.hpp>
#include <beast/http/type_check.hpp>
#include <beast/http/detail/writes.hpp>
#include <beast/http/detail/write_preparation.hpp>
#include <beast/http/rfc2616.hpp>
#include <boost/asio/buffer.hpp>
#include <condition_variable>
#include <mutex>
namespace beast {
namespace http {
template<bool isRequest, class Body, class Headers>
message<isRequest, Body, Headers>::
message()
{
static_assert(is_Body<Body>::value,
"Body requirements not met");
}
template<bool isRequest, class Body, class Headers>
message<isRequest, Body, Headers>::
message(request_params params)
{
static_assert(is_Body<Body>::value,
"Body requirements not met");
static_assert(isRequest, "message is not a request");
this->method = params.method;
this->url = std::move(params.url);
version = params.version;
}
template<bool isRequest, class Body, class Headers>
message<isRequest, Body, Headers>::
message(response_params params)
{
static_assert(is_Body<Body>::value,
"Body requirements not met");
static_assert(! isRequest, "message is not a response");
this->status = params.status;
this->reason = std::move(params.reason);
version = params.version;
}
template<bool isRequest, class Body, class Headers>
template<class Streambuf>
void
message<isRequest, Body, Headers>::
write_firstline(Streambuf& streambuf,
std::true_type) const
{
detail::write(streambuf, to_string(this->method));
detail::write(streambuf, " ");
detail::write(streambuf, this->url);
switch(version)
{
case 10:
detail::write(streambuf, " HTTP/1.0\r\n");
break;
case 11:
detail::write(streambuf, " HTTP/1.1\r\n");
break;
default:
detail::write(streambuf, " HTTP/");
detail::write(streambuf, version / 10);
detail::write(streambuf, ".");
detail::write(streambuf, version % 10);
detail::write(streambuf, "\r\n");
break;
}
}
template<bool isRequest, class Body, class Headers>
template<class Streambuf>
void
message<isRequest, Body, Headers>::
write_firstline(Streambuf& streambuf,
std::false_type) const
{
switch(version)
{
case 10:
detail::write(streambuf, "HTTP/1.0 ");
break;
case 11:
detail::write(streambuf, "HTTP/1.1 ");
break;
default:
detail::write(streambuf, " HTTP/");
detail::write(streambuf, version / 10);
detail::write(streambuf, ".");
detail::write(streambuf, version % 10);
detail::write(streambuf, " ");
break;
}
detail::write(streambuf, this->status);
detail::write(streambuf, " ");
detail::write(streambuf, this->reason);
detail::write(streambuf, "\r\n");
}
namespace detail {
template<class ConstBufferSequence>
std::string
buffers_to_string(ConstBufferSequence const& buffers)
{
using boost::asio::buffer_cast;
using boost::asio::buffer_size;
std::string s;
s.reserve(buffer_size(buffers));
for(auto const& b : buffers)
s.append(buffer_cast<char const*>(b),
buffer_size(b));
return s;
}
} // detail
// Diagnostic output only
template<bool isRequest, class Body, class Headers>
std::ostream&
operator<<(std::ostream& os,
message<isRequest, Body, Headers> const& msg)
{
static_assert(is_WritableBody<Body>::value,
"WritableBody requirements not met");
error_code ec;
detail::write_preparation<isRequest, Body, Headers> wp(msg);
wp.init(ec);
if(ec)
return os;
std::mutex m;
std::condition_variable cv;
bool ready = false;
resume_context resume{
[&]
{
std::lock_guard<std::mutex> lock(m);
ready = true;
cv.notify_one();
}};
auto copy = resume;
os << detail::buffers_to_string(wp.sb.data());
wp.sb.consume(wp.sb.size());
auto writef =
[&os, &wp](auto const& buffers)
{
if(wp.chunked)
os << detail::buffers_to_string(
chunk_encode(buffers));
else
os << detail::buffers_to_string(
buffers);
};
for(;;)
{
{
auto result = wp.w(std::move(copy), ec, writef);
if(ec)
return os;
if(result)
break;
if(boost::indeterminate(result))
{
copy = resume;
std::unique_lock<std::mutex> lock(m);
cv.wait(lock, [&]{ return ready; });
ready = false;
}
}
wp.sb.consume(wp.sb.size());
for(;;)
{
auto result = wp.w(std::move(copy), ec, writef);
if(ec)
return os;
if(result)
break;
if(boost::indeterminate(result))
{
copy = resume;
std::unique_lock<std::mutex> lock(m);
cv.wait(lock, [&]{ return ready; });
ready = false;
}
}
}
if(wp.chunked)
{
// VFALCO Unfortunately the current interface to the
// Writer concept prevents us from using coalescing the
// final body chunk with the final chunk delimiter.
//
// write final chunk
os << detail::buffers_to_string(chunk_encode_final());
if(ec)
return os;
}
os << std::endl;
return os;
}
//------------------------------------------------------------------------------
template<bool isRequest, class Body, class Headers>
void
set_connection(bool keep_alive,
message<isRequest, Body, Headers>& req)
{
if(req.version >= 11)
{
if(! keep_alive)
req.headers.replace("Connection", "close");
else
req.headers.erase("Connection");
}
else
{
if(keep_alive)
req.headers.replace("Connection", "keep-alive");
else
req.headers.erase("Connection");
}
}
template<class Body, class Headers,
class OtherBody, class OtherAllocator>
void
set_connection(bool keep_alive,
message<false, Body, Headers>& resp,
message<true, OtherBody, OtherAllocator> const& req)
{
if(req.version >= 11)
{
if(rfc2616::token_in_list(req["Connection"], "close"))
keep_alive = false;
}
else
{
if(! rfc2616::token_in_list(req["Connection"], "keep-alive"))
keep_alive = false;
}
set_connection(keep_alive, resp);
}
template<class Streambuf, class FieldSequence>
void
write_fields(Streambuf& streambuf, FieldSequence const& fields)
{
static_assert(is_Streambuf<Streambuf>::value,
"Streambuf requirements not met");
//static_assert(is_FieldSequence<FieldSequence>::value,
// "FieldSequence requirements not met");
for(auto const& field : fields)
{
detail::write(streambuf, field.name());
detail::write(streambuf, ": ");
detail::write(streambuf, field.value());
detail::write(streambuf, "\r\n");
}
}
template<bool isRequest, class Body, class Headers>
bool
is_keep_alive(message<isRequest, Body, Headers> const& msg)
{
if(msg.version >= 11)
{
if(rfc2616::token_in_list(
msg.headers["Connection"], "close"))
return false;
return true;
}
if(rfc2616::token_in_list(
msg.headers["Connection"], "keep-alive"))
return true;
return false;
}
template<bool isRequest, class Body, class Headers>
bool
is_upgrade(message<isRequest, Body, Headers> const& msg)
{
if(msg.version < 11)
return false;
if(rfc2616::token_in_list(
msg.headers["Connection"], "upgrade"))
return true;
return false;
}
} // http
} // beast
#include <beast/http/impl/message.ipp>
#endif

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//
// Copyright (c) 2013-2016 Vinnie Falco (vinnie dot falco at gmail 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 BEAST_HTTP_IMPL_READ_IPP_HPP
#define BEAST_HTTP_IMPL_READ_IPP_HPP
#include <beast/http/type_check.hpp>
#include <beast/async_completion.hpp>
#include <beast/bind_handler.hpp>
#include <beast/handler_alloc.hpp>
#include <cassert>
namespace beast {
namespace http {
namespace detail {
template<class Stream, class Streambuf,
bool isRequest, class Body, class Headers,
class Handler>
class read_op
{
using alloc_type =
handler_alloc<char, Handler>;
using parser_type =
parser<isRequest, Body, Headers>;
using message_type =
message<isRequest, Body, Headers>;
struct data
{
Stream& s;
Streambuf& sb;
message_type& m;
parser_type p;
Handler h;
bool cont;
int state = 0;
template<class DeducedHandler>
data(DeducedHandler&& h_, Stream& s_,
Streambuf& sb_, message_type& m_)
: s(s_)
, sb(sb_)
, m(m_)
, h(std::forward<DeducedHandler>(h_))
, cont(boost_asio_handler_cont_helpers::
is_continuation(h))
{
}
};
std::shared_ptr<data> d_;
public:
read_op(read_op&&) = default;
read_op(read_op const&) = default;
template<class DeducedHandler, class... Args>
read_op(DeducedHandler&& h, Stream&s, Args&&... args)
: d_(std::allocate_shared<data>(alloc_type{h},
std::forward<DeducedHandler>(h), s,
std::forward<Args>(args)...))
{
(*this)(error_code{}, 0, false);
}
void
operator()(error_code ec,
std::size_t bytes_transferred, bool again = true);
friend
auto asio_handler_allocate(
std::size_t size, read_op* op)
{
return boost_asio_handler_alloc_helpers::
allocate(size, op->d_->h);
}
friend
auto asio_handler_deallocate(
void* p, std::size_t size, read_op* op)
{
return boost_asio_handler_alloc_helpers::
deallocate(p, size, op->d_->h);
}
friend
auto asio_handler_is_continuation(read_op* op)
{
return op->d_->cont;
}
template <class Function>
friend
auto asio_handler_invoke(Function&& f, read_op* op)
{
return boost_asio_handler_invoke_helpers::
invoke(f, op->d_->h);
}
};
template<class Stream, class Streambuf,
bool isRequest, class Body, class Headers,
class Handler>
void
read_op<Stream, Streambuf, isRequest, Body, Headers, Handler>::
operator()(error_code ec, std::size_t bytes_transferred, bool again)
{
auto& d = *d_;
d.cont = d.cont || again;
while(d.state != 99)
{
switch(d.state)
{
case 0:
{
auto const used =
d.p.write(d.sb.data(), ec);
if(ec)
{
// call handler
d.state = 99;
d.s.get_io_service().post(
bind_handler(std::move(*this), ec, 0));
return;
}
d.sb.consume(used);
if(d.p.complete())
{
// call handler
d.state = 99;
d.m = d.p.release();
d.s.get_io_service().post(
bind_handler(std::move(*this), ec, 0));
return;
}
d.state = 1;
break;
}
case 1:
// read
d.state = 2;
d.s.async_read_some(d.sb.prepare(
read_size_helper(d.sb, 65536)),
std::move(*this));
return;
// got data
case 2:
{
if(ec == boost::asio::error::eof)
{
if(! d.p.started())
{
// call handler
d.state = 99;
break;
}
// Caller will see eof on next read.
ec = {};
d.p.write_eof(ec);
if(! ec)
{
assert(d.p.complete());
d.m = d.p.release();
}
// call handler
d.state = 99;
break;
}
if(ec)
{
// call handler
d.state = 99;
break;
}
d.sb.commit(bytes_transferred);
d.sb.consume(d.p.write(d.sb.data(), ec));
if(ec)
{
// call handler
d.state = 99;
break;
}
if(d.p.complete())
{
// call handler
d.state = 99;
d.m = d.p.release();
break;
}
d.state = 1;
break;
}
}
}
d.h(ec);
}
} // detail
//------------------------------------------------------------------------------
template<class SyncReadStream, class Streambuf,
bool isRequest, class Body, class Headers>
void
read(SyncReadStream& stream, Streambuf& streambuf,
message<isRequest, Body, Headers>& m,
error_code& ec)
{
static_assert(is_SyncReadStream<SyncReadStream>::value,
"SyncReadStream requirements not met");
static_assert(is_Streambuf<Streambuf>::value,
"Streambuf requirements not met");
static_assert(is_ReadableBody<Body>::value,
"ReadableBody requirements not met");
parser<isRequest, Body, Headers> p;
for(;;)
{
auto used =
p.write(streambuf.data(), ec);
if(ec)
return;
streambuf.consume(used);
if(p.complete())
{
m = p.release();
break;
}
streambuf.commit(stream.read_some(
streambuf.prepare(read_size_helper(
streambuf, 65536)), ec));
if(ec && ec != boost::asio::error::eof)
return;
if(ec == boost::asio::error::eof)
{
if(! p.started())
return;
// Caller will see eof on next read.
ec = {};
p.write_eof(ec);
if(ec)
return;
assert(p.complete());
m = p.release();
break;
}
}
}
template<class AsyncReadStream, class Streambuf,
bool isRequest, class Body, class Headers,
class CompletionToken>
auto
async_read(AsyncReadStream& stream, Streambuf& streambuf,
message<isRequest, Body, Headers>& m,
CompletionToken&& token)
{
static_assert(is_AsyncReadStream<AsyncReadStream>::value,
"AsyncReadStream requirements not met");
static_assert(is_Streambuf<Streambuf>::value,
"Streambuf requirements not met");
static_assert(is_ReadableBody<Body>::value,
"ReadableBody requirements not met");
beast::async_completion<CompletionToken,
void(error_code)> completion(token);
detail::read_op<AsyncReadStream, Streambuf,
isRequest, Body, Headers, decltype(
completion.handler)>{completion.handler,
stream, streambuf, m};
return completion.result.get();
}
} // http
} // beast
#endif

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//
// Copyright (c) 2013-2016 Vinnie Falco (vinnie dot falco at gmail 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 BEAST_HTTP_IMPL_WRITE_IPP
#define BEAST_HTTP_IMPL_WRITE_IPP
#include <beast/http/chunk_encode.hpp>
#include <beast/http/resume_context.hpp>
#include <beast/http/type_check.hpp>
#include <beast/http/detail/writes.hpp>
#include <beast/http/detail/write_preparation.hpp>
#include <beast/buffer_cat.hpp>
#include <beast/async_completion.hpp>
#include <beast/bind_handler.hpp>
#include <beast/handler_alloc.hpp>
#include <beast/streambuf.hpp>
#include <beast/type_check.hpp>
#include <boost/asio/write.hpp>
#include <boost/logic/tribool.hpp>
#include <condition_variable>
#include <mutex>
#include <type_traits>
namespace beast {
namespace http {
namespace detail {
template<class Stream, class Handler,
bool isRequest, class Body, class Headers>
class write_op
{
using alloc_type =
handler_alloc<char, Handler>;
struct data
{
Stream& s;
// VFALCO How do we use handler_alloc in write_preparation?
write_preparation<
isRequest, Body, Headers> wp;
Handler h;
resume_context resume;
resume_context copy;
bool cont;
int state = 0;
template<class DeducedHandler>
data(DeducedHandler&& h_, Stream& s_,
message<isRequest, Body, Headers> const& m_)
: s(s_)
, wp(m_)
, h(std::forward<DeducedHandler>(h_))
, cont(boost_asio_handler_cont_helpers::
is_continuation(h))
{
}
};
std::shared_ptr<data> d_;
public:
write_op(write_op&&) = default;
write_op(write_op const&) = default;
template<class DeducedHandler, class... Args>
write_op(DeducedHandler&& h, Stream& s, Args&&... args)
: d_(std::allocate_shared<data>(alloc_type{h},
std::forward<DeducedHandler>(h), s,
std::forward<Args>(args)...))
{
auto& d = *d_;
d.resume = {
[self = *this]() mutable
{
self.d_->cont = false;
auto& ios = self.d_->s.get_io_service();
ios.dispatch(bind_handler(std::move(self),
error_code{}, 0, false));
}};
d.copy = d.resume;
(*this)(error_code{}, 0, false);
}
explicit
write_op(std::shared_ptr<data> d)
: d_(std::move(d))
{
}
void
operator()(error_code ec,
std::size_t bytes_transferred, bool again = true);
friend
auto asio_handler_allocate(
std::size_t size, write_op* op)
{
return boost_asio_handler_alloc_helpers::
allocate(size, op->d_->h);
}
friend
auto asio_handler_deallocate(
void* p, std::size_t size, write_op* op)
{
return boost_asio_handler_alloc_helpers::
deallocate(p, size, op->d_->h);
}
friend
auto asio_handler_is_continuation(write_op* op)
{
return op->d_->cont;
}
template <class Function>
friend
auto asio_handler_invoke(Function&& f, write_op* op)
{
return boost_asio_handler_invoke_helpers::
invoke(f, op->d_->h);
}
};
template<class Stream, class Handler,
bool isRequest, class Body, class Headers>
void
write_op<Stream, Handler, isRequest, Body, Headers>::
operator()(error_code ec, std::size_t, bool again)
{
auto& d = *d_;
d.cont = d.cont || again;
while(! ec && d.state != 99)
{
switch(d.state)
{
case 0:
{
d.wp.init(ec);
if(ec)
{
// call handler
d.state = 99;
d.s.get_io_service().post(bind_handler(
std::move(*this), ec, 0, false));
return;
}
d.state = 1;
break;
}
case 1:
{
auto const result = d.wp.w(std::move(d.copy), ec,
[&](auto const& buffers)
{
// write headers and body
if(d.wp.chunked)
boost::asio::async_write(d.s,
buffer_cat(d.wp.sb.data(),
chunk_encode(buffers)),
std::move(*this));
else
boost::asio::async_write(d.s,
buffer_cat(d.wp.sb.data(),
buffers), std::move(*this));
});
if(ec)
{
// call handler
d.state = 99;
d.s.get_io_service().post(bind_handler(
std::move(*this), ec, false));
return;
}
if(boost::indeterminate(result))
{
// suspend
d.copy = d.resume;
return;
}
if(result)
d.state = d.wp.chunked ? 4 : 5;
else
d.state = 2;
return;
}
// sent headers and body
case 2:
d.wp.sb.consume(d.wp.sb.size());
d.state = 3;
break;
case 3:
{
auto const result = d.wp.w(std::move(d.copy), ec,
[&](auto const& buffers)
{
// write body
if(d.wp.chunked)
boost::asio::async_write(d.s,
chunk_encode(buffers),
std::move(*this));
else
boost::asio::async_write(d.s,
buffers, std::move(*this));
});
if(ec)
{
// call handler
d.state = 99;
break;
}
if(boost::indeterminate(result))
{
// suspend
d.copy = d.resume;
return;
}
if(result)
d.state = d.wp.chunked ? 4 : 5;
else
d.state = 2;
return;
}
case 4:
// VFALCO Unfortunately the current interface to the
// Writer concept prevents us from using coalescing the
// final body chunk with the final chunk delimiter.
//
// write final chunk
d.state = 5;
boost::asio::async_write(d.s,
chunk_encode_final(), std::move(*this));
return;
case 5:
if(d.wp.close)
{
// VFALCO TODO Decide on an error code
ec = boost::asio::error::eof;
}
d.state = 99;
break;
}
}
d.h(ec);
d.resume = {};
d.copy = {};
}
} // detail
//------------------------------------------------------------------------------
template<class SyncWriteStream,
bool isRequest, class Body, class Headers>
void
write(SyncWriteStream& stream,
message<isRequest, Body, Headers> const& msg,
boost::system::error_code& ec)
{
static_assert(is_WritableBody<Body>::value,
"WritableBody requirements not met");
detail::write_preparation<isRequest, Body, Headers> wp(msg);
wp.init(ec);
if(ec)
return;
std::mutex m;
std::condition_variable cv;
bool ready = false;
resume_context resume{
[&]
{
std::lock_guard<std::mutex> lock(m);
ready = true;
cv.notify_one();
}};
auto copy = resume;
for(;;)
{
{
auto result = wp.w(std::move(copy), ec,
[&](auto const& buffers)
{
// write headers and body
if(wp.chunked)
boost::asio::write(stream, buffer_cat(
wp.sb.data(), chunk_encode(buffers)), ec);
else
boost::asio::write(stream, buffer_cat(
wp.sb.data(), buffers), ec);
});
if(ec)
return;
if(result)
break;
if(boost::indeterminate(result))
{
boost::asio::write(stream, wp.sb.data(), ec);
if(ec)
return;
wp.sb.consume(wp.sb.size());
copy = resume;
std::unique_lock<std::mutex> lock(m);
cv.wait(lock, [&]{ return ready; });
ready = false;
}
}
wp.sb.consume(wp.sb.size());
for(;;)
{
auto result = wp.w(std::move(copy), ec,
[&](auto const& buffers)
{
// write body
if(wp.chunked)
boost::asio::write(stream,
chunk_encode(buffers), ec);
else
boost::asio::write(stream, buffers, ec);
});
if(ec)
return;
if(result)
break;
if(boost::indeterminate(result))
{
copy = resume;
std::unique_lock<std::mutex> lock(m);
cv.wait(lock, [&]{ return ready; });
ready = false;
}
}
}
if(wp.chunked)
{
// VFALCO Unfortunately the current interface to the
// Writer concept prevents us from using coalescing the
// final body chunk with the final chunk delimiter.
//
// write final chunk
boost::asio::write(stream, chunk_encode_final(), ec);
if(ec)
return;
}
if(wp.close)
{
// VFALCO TODO Decide on an error code
ec = boost::asio::error::eof;
}
}
template<class AsyncWriteStream,
bool isRequest, class Body, class Headers,
class CompletionToken>
auto
async_write(AsyncWriteStream& stream,
message<isRequest, Body, Headers> const& msg,
CompletionToken&& token)
{
static_assert(
is_AsyncWriteStream<AsyncWriteStream>::value,
"AsyncWriteStream requirements not met");
static_assert(is_WritableBody<Body>::value,
"WritableBody requirements not met");
beast::async_completion<CompletionToken,
void(error_code)> completion(token);
detail::write_op<AsyncWriteStream, decltype(completion.handler),
isRequest, Body, Headers>{completion.handler, stream, msg};
return completion.result.get();
}
} // http
} // beast
#endif

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//
// Copyright (c) 2013-2016 Vinnie Falco (vinnie dot falco at gmail 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 BEAST_HTTP_MESSAGE_HPP
#define BEAST_HTTP_MESSAGE_HPP
#include <beast/http/basic_headers.hpp>
#include <beast/http/method.hpp>
#include <beast/buffers_debug.hpp>
#include <beast/type_check.hpp>
#include <memory>
#include <ostream>
#include <string>
namespace beast {
namespace http {
namespace detail {
struct request_fields
{
http::method_t method;
std::string url;
};
struct response_fields
{
int status;
std::string reason;
};
} // detail
struct request_params
{
http::method_t method;
std::string url;
int version;
};
struct response_params
{
int status;
std::string reason;
int version;
};
/** A HTTP message.
A message can be a request or response, depending on the `isRequest`
template argument value. Requests and responses have different types,
so functions may be overloaded on them if desired.
The `Body` template argument type determines the model used
to read or write the content body of the message.
@tparam isRequest `true` if this is a request.
@tparam Body A type meeting the requirements of Body.
@tparam Headers A type meeting the requirements of Headers.
*/
template<bool isRequest, class Body, class Headers>
struct message
: std::conditional_t<isRequest,
detail::request_fields, detail::response_fields>
{
/** The trait type characterizing the body.
The body member will be of type body_type::value_type.
*/
using body_type = Body;
using headers_type = Headers;
using is_request =
std::integral_constant<bool, isRequest>;
int version; // 10 or 11
headers_type headers;
typename Body::value_type body;
message();
message(message&&) = default;
message(message const&) = default;
message& operator=(message&&) = default;
message& operator=(message const&) = default;
/** Construct a HTTP request.
*/
explicit
message(request_params params);
/** Construct a HTTP response.
*/
explicit
message(response_params params);
/// Serialize the request or response line to a Streambuf.
template<class Streambuf>
void
write_firstline(Streambuf& streambuf) const
{
write_firstline(streambuf,
std::integral_constant<bool, isRequest>{});
}
/// Diagnostics only
template<bool, class, class>
friend
std::ostream&
operator<<(std::ostream& os,
message const& m);
private:
template<class Streambuf>
void
write_firstline(Streambuf& streambuf,
std::true_type) const;
template<class Streambuf>
void
write_firstline(Streambuf& streambuf,
std::false_type) const;
};
#if ! GENERATING_DOCS
/// A typical HTTP request
template<class Body,
class Headers = basic_headers<std::allocator<char>>>
using request = message<true, Body, Headers>;
/// A typical HTTP response
template<class Body,
class Headers = basic_headers<std::allocator<char>>>
using response = message<false, Body, Headers>;
#endif
// For diagnostic output only
template<bool isRequest, class Body, class Headers>
std::ostream&
operator<<(std::ostream& os,
message<isRequest, Body, Headers> const& m);
/// Write a FieldSequence to a Streambuf.
template<class Streambuf, class FieldSequence>
void
write_fields(Streambuf& streambuf, FieldSequence const& fields);
/// Returns `true` if a message indicates a keep alive
template<bool isRequest, class Body, class Headers>
bool
is_keep_alive(message<isRequest, Body, Headers> const& msg);
/// Returns `true` if a message indicates a HTTP Upgrade request or response
template<bool isRequest, class Body, class Headers>
bool
is_upgrade(message<isRequest, Body, Headers> const& msg);
} // http
} // beast
#include <beast/http/impl/message.ipp>
#endif

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//
// Copyright (c) 2013-2016 Vinnie Falco (vinnie dot falco at gmail 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 BEAST_HTTP_METHOD_HPP
#define BEAST_HTTP_METHOD_HPP
#include <cassert>
#include <memory>
#include <string>
namespace beast {
namespace http {
enum class method_t
{
http_delete,
http_get,
http_head,
http_post,
http_put,
// pathological
http_connect,
http_options,
http_trace,
// webdav
http_copy,
http_lock,
http_mkcol,
http_move,
http_propfind,
http_proppatch,
http_search,
http_unlock,
http_bind,
http_rebind,
http_unbind,
http_acl,
// subversion
http_report,
http_mkactivity,
http_checkout,
http_merge,
// upnp
http_msearch,
http_notify,
http_subscribe,
http_unsubscribe,
// RFC-5789
http_patch,
http_purge,
// CalDav
http_mkcalendar,
// RFC-2068, section 19.6.1.2
http_link,
http_unlink
};
template<class = void>
std::string
to_string(method_t m)
{
switch(m)
{
case method_t::http_delete: return "DELETE";
case method_t::http_get: return "GET";
case method_t::http_head: return "HEAD";
case method_t::http_post: return "POST";
case method_t::http_put: return "PUT";
case method_t::http_connect: return "CONNECT";
case method_t::http_options: return "OPTIONS";
case method_t::http_trace: return "TRACE";
case method_t::http_copy: return "COPY";
case method_t::http_lock: return "LOCK";
case method_t::http_mkcol: return "MKCOL";
case method_t::http_move: return "MOVE";
case method_t::http_propfind: return "PROPFIND";
case method_t::http_proppatch: return "PROPPATCH";
case method_t::http_search: return "SEARCH";
case method_t::http_unlock: return "UNLOCK";
case method_t::http_report: return "REPORT";
case method_t::http_mkactivity: return "MKACTIVITY";
case method_t::http_checkout: return "CHECKOUT";
case method_t::http_merge: return "MERGE";
case method_t::http_msearch: return "MSEARCH";
case method_t::http_notify: return "NOTIFY";
case method_t::http_subscribe: return "SUBSCRIBE";
case method_t::http_unsubscribe: return "UNSUBSCRIBE";
case method_t::http_patch: return "PATCH";
case method_t::http_purge: return "PURGE";
default:
assert(false);
break;
};
return "GET";
}
template <class Stream>
Stream&
operator<< (Stream& s, method_t m)
{
return s << to_string(m);
}
/** Returns the string corresponding to the numeric HTTP status code. */
template<class = void>
std::string
status_text (int status)
{
switch(status)
{
case 100: return "Continue";
case 101: return "Switching Protocols";
case 200: return "OK";
case 201: return "Created";
case 202: return "Accepted";
case 203: return "Non-Authoritative Information";
case 204: return "No Content";
case 205: return "Reset Content";
case 206: return "Partial Content";
case 300: return "Multiple Choices";
case 301: return "Moved Permanently";
case 302: return "Found";
case 303: return "See Other";
case 304: return "Not Modified";
case 305: return "Use Proxy";
//case 306: return "<reserved>";
case 307: return "Temporary Redirect";
case 400: return "Bad Request";
case 401: return "Unauthorized";
case 402: return "Payment Required";
case 403: return "Forbidden";
case 404: return "Not Found";
case 405: return "Method Not Allowed";
case 406: return "Not Acceptable";
case 407: return "Proxy Authentication Required";
case 408: return "Request Timeout";
case 409: return "Conflict";
case 410: return "Gone";
case 411: return "Length Required";
case 412: return "Precondition Failed";
case 413: return "Request Entity Too Large";
case 414: return "Request-URI Too Long";
case 415: return "Unsupported Media Type";
case 416: return "Requested Range Not Satisfiable";
case 417: return "Expectation Failed";
case 500: return "Internal Server Error";
case 501: return "Not Implemented";
case 502: return "Bad Gateway";
case 503: return "Service Unavailable";
case 504: return "Gateway Timeout";
case 505: return "HTTP Version Not Supported";
default:
break;
}
return "Unknown HTTP status";
}
} // http
} // beast
#endif

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//
// Copyright (c) 2013-2016 Vinnie Falco (vinnie dot falco at gmail 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 BEAST_HTTP_PARSER_HPP
#define BEAST_HTTP_PARSER_HPP
#include <beast/http/basic_parser.hpp>
#include <beast/http/error.hpp>
#include <beast/http/message.hpp>
#include <boost/optional.hpp>
#include <functional>
#include <type_traits>
#include <utility>
namespace beast {
namespace http {
/** A HTTP parser.
The parser may only be used once.
*/
template<bool isRequest, class Body, class Headers>
class parser
: public basic_parser<parser<isRequest, Body, Headers>>
{
using message_type =
message<isRequest, Body, Headers>;
message_type m_;
typename message_type::body_type::reader r_;
bool started_ = false;
public:
parser(parser&&) = default;
parser()
: http::basic_parser<parser>(isRequest)
, r_(m_)
{
}
/// Returns `true` if at least one byte has been processed
bool
started()
{
return started_;
}
message_type
release()
{
return std::move(m_);
}
private:
friend class http::basic_parser<parser>;
void
on_start()
{
started_ = true;
}
void
on_field(std::string const& field, std::string const& value)
{
m_.headers.insert(field, value);
}
void
on_headers_complete(error_code&)
{
// vFALCO TODO Decode the Content-Length and
// Transfer-Encoding, see if we can reserve the buffer.
//
// r_.reserve(content_length)
}
bool
on_request(http::method_t method, std::string const& url,
int major, int minor, bool keep_alive, bool upgrade,
std::true_type)
{
m_.method = method;
m_.url = url;
m_.version = major * 10 + minor;
return true;
}
bool
on_request(http::method_t, std::string const&,
int, int, bool, bool,
std::false_type)
{
return true;
}
bool
on_request(http::method_t method, std::string const& url,
int major, int minor, bool keep_alive, bool upgrade)
{
return on_request(method, url,
major, minor, keep_alive, upgrade,
typename message_type::is_request{});
}
bool
on_response(int status, std::string const& reason,
int major, int minor, bool keep_alive, bool upgrade,
std::true_type)
{
m_.status = status;
m_.reason = reason;
m_.version = major * 10 + minor;
// VFALCO TODO return expect_body_
return true;
}
bool
on_response(int, std::string const&, int, int, bool, bool,
std::false_type)
{
return true;
}
bool
on_response(int status, std::string const& reason,
int major, int minor, bool keep_alive, bool upgrade)
{
return on_response(
status, reason, major, minor, keep_alive, upgrade,
std::integral_constant<bool, ! message_type::is_request::value>{});
}
void
on_body(void const* data,
std::size_t size, error_code& ec)
{
r_.write(data, size, ec);
}
void
on_complete()
{
}
};
} // http
} // beast
#endif

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//
// Copyright (c) 2013-2016 Vinnie Falco (vinnie dot falco at gmail 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 BEAST_HTTP_READ_HPP
#define BEAST_HTTP_READ_HPP
#include <beast/http/error.hpp>
#include <beast/http/parser.hpp>
#include <beast/http/type_check.hpp>
#include <boost/asio/buffer.hpp>
#include <boost/system/error_code.hpp>
namespace beast {
namespace http {
/** Read a HTTP message from a stream.
@param stream The stream to read the message from.
@param streambuf A Streambuf used to hold unread bytes. The
implementation may read past the end of the message. The extra
bytes are stored here, to be presented in a subsequent call to
read.
@param msg An object used to store the read message. Any
contents will be overwritten.
@throws boost::system::system_error on failure.
*/
template<class SyncReadStream, class Streambuf,
bool isRequest, class Body, class Headers>
void
read(SyncReadStream& stream, Streambuf& streambuf,
message<isRequest, Body, Headers>& msg)
{
error_code ec;
read(stream, streambuf, msg, ec);
if(ec)
throw boost::system::system_error{ec};
}
/** Read a HTTP message from a stream.
@param stream The stream to read the message from.
@param streambuf A Streambuf used to hold unread bytes. The
implementation may read past the end of the message. The extra
bytes are stored here, to be presented in a subsequent call to
read.
@param msg An object used to store the read message. Any
contents will be overwritten.
@param ec Set to the error, if any occurred.
*/
template<class SyncReadStream, class Streambuf,
bool isRequest, class Body, class Headers>
void
read(SyncReadStream& stream, Streambuf& streambuf,
message<isRequest, Body, Headers>& msg,
error_code& ec);
/** Start reading a HTTP message from a stream asynchronously.
@param stream The stream to read the message from.
@param streambuf A Streambuf used to hold unread bytes. The
implementation may read past the end of the message. The extra
bytes are stored here, to be presented in a subsequent call to
async_read.
@param msg An object used to store the read message. Any
contents will be overwritten.
@param token The handler to be called when the request completes.
Copies will be made of the handler as required. The equivalent
function signature of the handler must be:
@code void handler(
error_code const& error // result of operation
); @endcode
Regardless of whether the asynchronous operation completes
immediately or not, the handler will not be invoked from within
this function. Invocation of the handler will be performed in a
manner equivalent to using boost::asio::io_service::post().
*/
template<class AsyncReadStream, class Streambuf,
bool isRequest, class Body, class Headers,
class CompletionToken>
#if GENERATING_DOCS
void_or_deduced
#else
auto
#endif
async_read(AsyncReadStream& stream, Streambuf& streambuf,
message<isRequest, Body, Headers>& msg,
CompletionToken&& token);
} // http
} // beast
#include <beast/http/impl/read.ipp>
#endif

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//
// Copyright (c) 2013-2016 Vinnie Falco (vinnie dot falco at gmail 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 BEAST_HTTP_REASON_HPP
#define BEAST_HTTP_REASON_HPP
namespace beast {
namespace http {
/** Returns the text for a known status code integer. */
template<class = void>
char const*
reason_string(int status)
{
switch(status)
{
case 100: return "Continue";
case 101: return "Switching Protocols";
case 200: return "OK";
case 201: return "Created";
case 202: return "Accepted";
case 203: return "Non-Authoritative Information";
case 204: return "No Content";
case 205: return "Reset Content";
case 206: return "Partial Content";
case 300: return "Multiple Choices";
case 301: return "Moved Permanently";
case 302: return "Found";
case 303: return "See Other";
case 304: return "Not Modified";
case 305: return "Use Proxy";
case 307: return "Temporary Redirect";
case 400: return "Bad Request";
case 401: return "Unauthorized";
case 402: return "Payment Required";
case 403: return "Forbidden";
case 404: return "Not Found";
case 405: return "Method Not Allowed";
case 406: return "Not Acceptable";
case 407: return "Proxy Authentication Required";
case 408: return "Request Timeout";
case 409: return "Conflict";
case 410: return "Gone";
case 411: return "Length Required";
case 412: return "Precondition Failed";
case 413: return "Request Entity Too Large";
case 414: return "Request-URI Too Long";
case 415: return "Unsupported Media Type";
case 416: return "Requested Range Not Satisfiable";
case 417: return "Expectation Failed";
case 500: return "Internal Server Error";
case 501: return "Not Implemented";
case 502: return "Bad Gateway";
case 503: return "Service Unavailable";
case 504: return "Gateway Timeout";
case 505: return "HTTP Version Not Supported";
case 306: return "<reserved>";
default:
break;
}
return "<unknown-status>";
}
} // http
} // beast
#endif

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//
// Copyright (c) 2013-2016 Vinnie Falco (vinnie dot falco at gmail 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 BEAST_HTTP_RESUME_CONTEXT_HPP
#define BEAST_HTTP_RESUME_CONTEXT_HPP
#include <functional>
namespace beast {
namespace http {
/** A functor that resumes a write operation.
An rvalue reference to an object of this type is provided by the
write implementation to the `writer` associated with the body of
a message being sent.
If it is desired that the `writer` suspend the write operation (for
example, to wait until data is ready), it can take ownership of
the resume context using a move. Then, it returns `boost::indeterminate`
to indicate that the write operation should suspend. Later, the calling
code invokes the resume function and the write operation continues
from where it left off.
*/
using resume_context = std::function<void(void)>;
} // http
} // beast
#endif

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//
// Copyright (c) 2013-2016 Vinnie Falco (vinnie dot falco at gmail 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 BEAST_HTTP_RFC2616_HPP
#define BEAST_HTTP_RFC2616_HPP
#include <boost/range/algorithm/equal.hpp>
#include <boost/range/iterator_range.hpp>
#include <boost/utility/string_ref.hpp>
#include <algorithm>
#include <cctype>
#include <string>
#include <iterator>
#include <tuple> // for std::tie, remove ASAP
#include <utility>
#include <vector>
namespace beast {
/** Routines for performing RFC2616 compliance.
RFC2616:
Hypertext Transfer Protocol -- HTTP/1.1
http://www.w3.org/Protocols/rfc2616/rfc2616
*/
namespace rfc2616 {
namespace detail {
struct ci_equal_pred
{
bool operator()(char c1, char c2)
{
// VFALCO TODO Use a table lookup here
return std::tolower(c1) == std::tolower(c2);
}
};
} // detail
/** Returns `true` if `c` is linear white space.
This excludes the CRLF sequence allowed for line continuations.
*/
inline
bool
is_lws(char c)
{
return c == ' ' || c == '\t';
}
/** Returns `true` if `c` is any whitespace character. */
inline
bool
is_white(char c)
{
switch (c)
{
case ' ': case '\f': case '\n':
case '\r': case '\t': case '\v':
return true;
};
return false;
}
/** Returns `true` if `c` is a control character. */
inline
bool
is_control(char c)
{
return c <= 31 || c >= 127;
}
/** Returns `true` if `c` is a separator. */
inline
bool
is_separator(char c)
{
// VFALCO Could use a static table
switch (c)
{
case '(': case ')': case '<': case '>': case '@':
case ',': case ';': case ':': case '\\': case '"':
case '{': case '}': case ' ': case '\t':
return true;
};
return false;
}
/** Returns `true` if `c` is a character. */
inline
bool
is_char(char c)
{
return c >= 0 && c <= 127;
}
template <class FwdIter>
FwdIter
trim_left (FwdIter first, FwdIter last)
{
return std::find_if_not (first, last,
is_white);
}
template <class FwdIter>
FwdIter
trim_right (FwdIter first, FwdIter last)
{
if (first == last)
return last;
do
{
--last;
if (! is_white (*last))
return ++last;
}
while (last != first);
return first;
}
template <class CharT, class Traits, class Allocator>
void
trim_right_in_place (std::basic_string <
CharT, Traits, Allocator>& s)
{
s.resize (std::distance (s.begin(),
trim_right (s.begin(), s.end())));
}
template <class FwdIter>
std::pair <FwdIter, FwdIter>
trim (FwdIter first, FwdIter last)
{
first = trim_left (first, last);
last = trim_right (first, last);
return std::make_pair (first, last);
}
template <class String>
String
trim (String const& s)
{
using std::begin;
using std::end;
auto first = begin(s);
auto last = end(s);
std::tie (first, last) = trim (first, last);
return { first, last };
}
template <class String>
String
trim_right (String const& s)
{
using std::begin;
using std::end;
auto first (begin(s));
auto last (end(s));
last = trim_right (first, last);
return { first, last };
}
inline
std::string
trim (std::string const& s)
{
return trim <std::string> (s);
}
/** Parse a character sequence of values separated by commas.
Double quotes and escape sequences will be converted. Excess white
space, commas, double quotes, and empty elements are not copied.
Format:
#(token|quoted-string)
Reference:
http://www.w3.org/Protocols/rfc2616/rfc2616-sec2.html#sec2
*/
template <class FwdIt,
class Result = std::vector<
std::basic_string<typename
std::iterator_traits<FwdIt>::value_type>>,
class Char>
Result
split(FwdIt first, FwdIt last, Char delim)
{
Result result;
using string = typename Result::value_type;
FwdIt iter = first;
string e;
while (iter != last)
{
if (*iter == '"')
{
// quoted-string
++iter;
while (iter != last)
{
if (*iter == '"')
{
++iter;
break;
}
if (*iter == '\\')
{
// quoted-pair
++iter;
if (iter != last)
e.append (1, *iter++);
}
else
{
// qdtext
e.append (1, *iter++);
}
}
if (! e.empty())
{
result.emplace_back(std::move(e));
e.clear();
}
}
else if (*iter == delim)
{
e = trim_right (e);
if (! e.empty())
{
result.emplace_back(std::move(e));
e.clear();
}
++iter;
}
else if (is_lws (*iter))
{
++iter;
}
else
{
e.append (1, *iter++);
}
}
if (! e.empty())
{
e = trim_right (e);
if (! e.empty())
result.emplace_back(std::move(e));
}
return result;
}
template <class FwdIt,
class Result = std::vector<
std::basic_string<typename std::iterator_traits<
FwdIt>::value_type>>>
Result
split_commas(FwdIt first, FwdIt last)
{
return split(first, last, ',');
}
template <class Result = std::vector<std::string>>
Result
split_commas(boost::string_ref const& s)
{
return split_commas(s.begin(), s.end());
}
//------------------------------------------------------------------------------
/** Iterates through a comma separated list.
Meets the requirements of ForwardIterator.
List defined in rfc2616 2.1.
@note Values returned may contain backslash escapes.
*/
class list_iterator
{
using iter_type = boost::string_ref::const_iterator;
iter_type it_;
iter_type end_;
boost::string_ref value_;
public:
using value_type = boost::string_ref;
using pointer = value_type const*;
using reference = value_type const&;
using difference_type = std::ptrdiff_t;
using iterator_category =
std::forward_iterator_tag;
list_iterator(iter_type begin, iter_type end)
: it_(begin)
, end_(end)
{
if(it_ != end_)
increment();
}
bool
operator==(list_iterator const& other) const
{
return other.it_ == it_ && other.end_ == end_
&& other.value_.size() == value_.size();
}
bool
operator!=(list_iterator const& other) const
{
return !(*this == other);
}
reference
operator*() const
{
return value_;
}
pointer
operator->() const
{
return &*(*this);
}
list_iterator&
operator++()
{
increment();
return *this;
}
list_iterator
operator++(int)
{
auto temp = *this;
++(*this);
return temp;
}
private:
template<class = void>
void
increment();
};
template<class>
void
list_iterator::increment()
{
value_.clear();
while(it_ != end_)
{
if(*it_ == '"')
{
// quoted-string
++it_;
if(it_ == end_)
return;
if(*it_ != '"')
{
auto start = it_;
for(;;)
{
++it_;
if(it_ == end_)
{
value_ = boost::string_ref(
&*start, std::distance(start, it_));
return;
}
if(*it_ == '"')
{
value_ = boost::string_ref(
&*start, std::distance(start, it_));
++it_;
return;
}
}
}
++it_;
}
else if(*it_ == ',')
{
it_++;
continue;
}
else if(is_lws(*it_))
{
++it_;
continue;
}
else
{
auto start = it_;
for(;;)
{
++it_;
if(it_ == end_ ||
*it_ == ',' ||
is_lws(*it_))
{
value_ = boost::string_ref(
&*start, std::distance(start, it_));
return;
}
}
}
}
}
/** Returns true if two strings are equal.
A case-insensitive comparison is used.
*/
inline
bool
ci_equal(boost::string_ref s1, boost::string_ref s2)
{
return boost::range::equal(s1, s2,
detail::ci_equal_pred{});
}
/** Returns a range representing the list. */
inline
auto
make_list(boost::string_ref const& field)
{
return boost::iterator_range<list_iterator>{
list_iterator{field.begin(), field.end()},
list_iterator{field.end(), field.end()}};
}
/** Returns true if the specified token exists in the list.
A case-insensitive comparison is used.
*/
template<class = void>
bool
token_in_list(boost::string_ref const& value,
boost::string_ref const& token)
{
for(auto const& item : make_list(value))
if(ci_equal(item, token))
return true;
return false;
}
} // rfc2616
} // beast
#endif

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//
// Copyright (c) 2013-2016 Vinnie Falco (vinnie dot falco at gmail 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 BEAST_HTTP_STREAMBUF_BODY_HPP
#define BEAST_HTTP_STREAMBUF_BODY_HPP
#include <beast/http/error.hpp>
#include <beast/http/message.hpp>
#include <beast/buffer_cat.hpp>
#include <beast/streambuf.hpp>
#include <memory>
#include <string>
namespace beast {
namespace http {
/** A Body represented by a Streambuf
*/
template<class Streambuf>
struct basic_streambuf_body
{
using value_type = Streambuf;
class reader
{
value_type& sb_;
public:
template<bool isRequest, class Allocator>
explicit
reader(message<isRequest,
basic_streambuf_body, Allocator>& m) noexcept
: sb_(m.body)
{
}
void
write(void const* data,
std::size_t size, error_code&) noexcept
{
using boost::asio::buffer;
using boost::asio::buffer_copy;
sb_.commit(buffer_copy(
sb_.prepare(size), buffer(data, size)));
}
};
class writer
{
Streambuf const& body_;
public:
template<bool isRequest, class Allocator>
explicit
writer(message<isRequest, basic_streambuf_body,
Allocator> const& m)
: body_(m.body)
{
}
void
init(error_code& ec)
{
}
std::size_t
content_length() const
{
return body_.size();
}
template<class Write>
boost::tribool
operator()(resume_context&&, error_code&, Write&& write)
{
write(body_.data());
return true;
}
auto
data() const noexcept
{
return body_.data();
}
};
};
using streambuf_body = basic_streambuf_body<streambuf>;
} // http
} // beast
#endif

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//
// Copyright (c) 2013-2016 Vinnie Falco (vinnie dot falco at gmail 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 BEAST_HTTP_STRING_BODY_HPP
#define BEAST_HTTP_STRING_BODY_HPP
#include <beast/http/error.hpp>
#include <beast/http/message.hpp>
#include <beast/http/resume_context.hpp>
#include <beast/buffer_cat.hpp>
#include <beast/streambuf.hpp>
#include <memory>
#include <string>
namespace beast {
namespace http {
/** A Body represented by a std::string.
*/
struct string_body
{
using value_type = std::string;
class reader
{
value_type& s_;
public:
template<bool isRequest, class Allocator>
explicit
reader(message<isRequest,
string_body, Allocator>& m) noexcept
: s_(m.body)
{
}
void
write(void const* data,
std::size_t size, error_code&) noexcept
{
auto const n = s_.size();
s_.resize(n + size);
std::memcpy(&s_[n], data, size);
}
};
class writer
{
value_type const& body_;
public:
template<bool isRequest, class Allocator>
explicit
writer(message<isRequest, string_body, Allocator> const& msg)
: body_(msg.body)
{
}
void
init(error_code& ec)
{
}
std::size_t
content_length() const
{
return body_.size();
}
template<class Write>
boost::tribool
operator()(resume_context&&, error_code&, Write&& write)
{
write(boost::asio::buffer(body_));
return true;
}
};
};
} // http
} // beast
#endif

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//
// Copyright (c) 2013-2016 Vinnie Falco (vinnie dot falco at gmail 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 BEAST_HTTP_TYPE_CHECK_HPP
#define BEAST_HTTP_TYPE_CHECK_HPP
#include <beast/http/error.hpp>
#include <beast/http/message.hpp>
#include <beast/http/resume_context.hpp>
#include <beast/type_check.hpp>
#include <boost/asio/buffer.hpp>
#include <boost/logic/tribool.hpp>
#include <boost/system/error_code.hpp>
#include <functional>
#include <type_traits>
namespace beast {
namespace http {
#if GENERATING_DOCS
namespace detail {
#else
namespace concept {
#endif
struct Reader
{
template<bool isRequest, class Body, class Headers>
Reader(message<isRequest, Body, Headers>&) noexcept;
void write(void const*, std::size_t, error_code&) noexcept;
};
} // concept
/// Evaluates to std::true_type if `T` models Body
template<class T>
struct is_Body : std::true_type
{
};
/// Evalulates to std::true_type if Body has a reader
template<class T>
struct is_ReadableBody : std::true_type
{
};
/// Evalulates to std::true_type if Body has a writer
template<class T>
struct is_WritableBody : std::true_type
{
};
/// Evaluates to std::true_type if `T` models HTTPMessage
template<class T>
struct is_HTTPMessage : std::false_type
{
};
/// Evaluates to std::true_type if `HTTPMessage` is a request
template<class HTTPMessage>
struct is_HTTPRequest : std::true_type
{
};
} // http
} // beast
#endif

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//
// Copyright (c) 2013-2016 Vinnie Falco (vinnie dot falco at gmail 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 BEAST_HTTP_WRITE_HPP
#define BEAST_HTTP_WRITE_HPP
#include <beast/http/error.hpp>
#include <beast/http/message.hpp>
#include <boost/system/error_code.hpp>
#include <type_traits>
namespace beast {
namespace http {
/** Write a HTTP message to a stream.
@param stream The stream to send the message on.
@param msg The message to send.
@throws boost::system::error code on failure.
*/
template<class SyncWriteStream,
bool isRequest, class Body, class Headers>
void
write(SyncWriteStream& stream,
message<isRequest, Body, Headers> const& msg)
{
error_code ec;
write(stream, msg, ec);
if(ec)
throw boost::system::system_error{ec};
}
/** Write a HTTP message to a stream.
@param stream The stream to send the message on.
@param msg The message to send.
@param ec Set to the error, if any occurred.
*/
template<class SyncWriteStream,
bool isRequest, class Body, class Headers>
void
write(SyncWriteStream& stream,
message<isRequest, Body, Headers> const& msg,
error_code& ec);
/** Start writing a HTTP message to a stream asynchronously.
@param stream The stream to send the message on.
@param msg The message to send.
@param token The handler to be called when the request completes.
Copies will be made of the handler as required. The equivalent
function signature of the handler must be:
@code void handler(
error_code const& error // result of operation
); @endcode
Regardless of whether the asynchronous operation completes
immediately or not, the handler will not be invoked from within
this function. Invocation of the handler will be performed in a
manner equivalent to using boost::asio::io_service::post().
@note The message must remain valid at least until the
completion handler is called, no copies are made.
*/
template<class AsyncWriteStream,
bool isRequest, class Body, class Headers,
class CompletionToken>
#if GENERATING_DOCS
void_or_deduced
#else
auto
#endif
async_write(AsyncWriteStream& stream,
message<isRequest, Body, Headers> const& msg,
CompletionToken&& token);
} // http
} // beast
#include <beast/http/impl/write.ipp>
#endif