--- /dev/null
+--- a/boost/beast/core/detail/impl/read.hpp 2020-04-22 09:34:50.000000000 -0400
++++ b/boost/beast/core/detail/impl/read.hpp 2020-05-02 13:50:11.141761700 -0400
+@@ -214,7 +214,7 @@
+ class AsyncReadStream,
+ class DynamicBuffer,
+ class CompletionCondition,
+- class ReadHandler,
++ BOOST_BEAST_ASYNC_TPARAM2 ReadHandler,
+ class>
+ BOOST_BEAST_ASYNC_RESULT2(ReadHandler)
+ async_read(
+diff -aruN a/boost/beast/core/detail/is_invocable.hpp b/boost/beast/core/detail/is_invocable.hpp
+--- a/boost/beast/core/detail/is_invocable.hpp 2020-04-22 09:34:50.000000000 -0400
++++ b/boost/beast/core/detail/is_invocable.hpp 2020-05-02 13:50:11.141761700 -0400
+@@ -10,6 +10,8 @@
+ #ifndef BOOST_BEAST_DETAIL_IS_INVOCABLE_HPP
+ #define BOOST_BEAST_DETAIL_IS_INVOCABLE_HPP
+
++#include <boost/asio/async_result.hpp>
++#include <boost/type_traits/make_void.hpp>
+ #include <type_traits>
+ #include <utility>
+
+@@ -51,6 +53,26 @@
+ };
+ /** @} */
+
++template<class CompletionToken, class Signature, class = void>
++struct is_completion_token_for : std::false_type
++{
++};
++
++struct any_initiation
++{
++ template<class...AnyArgs>
++ void operator()(AnyArgs&&...);
++};
++
++template<class CompletionToken, class R, class...Args>
++struct is_completion_token_for<
++ CompletionToken, R(Args...), boost::void_t<decltype(
++ boost::asio::async_initiate<CompletionToken, R(Args...)>(
++ any_initiation(), std::declval<CompletionToken&>())
++ )>> : std::true_type
++{
++};
++
+ } // detail
+ } // beast
+ } // boost
+diff -aruN a/boost/beast/core/detail/read.hpp b/boost/beast/core/detail/read.hpp
+--- a/boost/beast/core/detail/read.hpp 2020-04-22 09:34:50.000000000 -0400
++++ b/boost/beast/core/detail/read.hpp 2020-05-02 13:50:11.142761711 -0400
+@@ -219,7 +219,7 @@
+ class AsyncReadStream,
+ class DynamicBuffer,
+ class CompletionCondition,
+- class ReadHandler
++ BOOST_BEAST_ASYNC_TPARAM2 ReadHandler
+ #if ! BOOST_BEAST_DOXYGEN
+ , class = typename std::enable_if<
+ is_async_read_stream<AsyncReadStream>::value &&
+diff -aruN a/boost/beast/core/detect_ssl.hpp b/boost/beast/core/detect_ssl.hpp
+--- a/boost/beast/core/detect_ssl.hpp 2020-04-22 09:34:50.000000000 -0400
++++ b/boost/beast/core/detect_ssl.hpp 2020-05-02 13:50:11.143761722 -0400
+@@ -374,13 +374,13 @@
+ void operator()(
+ DetectHandler&& h,
+ AsyncReadStream* s, // references are passed as pointers
+- DynamicBuffer& b)
++ DynamicBuffer* b)
+ {
+ detect_ssl_op<
+ typename std::decay<DetectHandler>::type,
+ AsyncReadStream,
+ DynamicBuffer>(
+- std::forward<DetectHandler>(h), *s, b);
++ std::forward<DetectHandler>(h), *s, *b);
+ }
+ };
+
+@@ -439,7 +439,7 @@
+ detail::run_detect_ssl_op{},
+ token,
+ &stream, // pass the reference by pointer
+- buffer);
++ &buffer);
+ }
+
+ //]
+diff -aruN a/boost/beast/core/impl/basic_stream.hpp b/boost/beast/core/impl/basic_stream.hpp
+--- a/boost/beast/core/impl/basic_stream.hpp 2020-04-22 09:34:50.000000000 -0400
++++ b/boost/beast/core/impl/basic_stream.hpp 2020-05-02 13:50:11.144761733 -0400
+@@ -776,7 +776,7 @@
+ //------------------------------------------------------------------------------
+
+ template<class Protocol, class Executor, class RatePolicy>
+-template<class ConnectHandler>
++template<BOOST_BEAST_ASYNC_TPARAM1 ConnectHandler>
+ BOOST_BEAST_ASYNC_RESULT1(ConnectHandler)
+ basic_stream<Protocol, Executor, RatePolicy>::
+ async_connect(
+@@ -795,7 +795,7 @@
+ template<class Protocol, class Executor, class RatePolicy>
+ template<
+ class EndpointSequence,
+- class RangeConnectHandler,
++ BOOST_ASIO_COMPLETION_TOKEN_FOR(void(error_code, typename Protocol::endpoint)) RangeConnectHandler,
+ class>
+ BOOST_ASIO_INITFN_RESULT_TYPE(RangeConnectHandler,void(error_code, typename Protocol::endpoint))
+ basic_stream<Protocol, Executor, RatePolicy>::
+@@ -817,7 +817,7 @@
+ template<
+ class EndpointSequence,
+ class ConnectCondition,
+- class RangeConnectHandler,
++ BOOST_ASIO_COMPLETION_TOKEN_FOR(void(error_code, typename Protocol::endpoint)) RangeConnectHandler,
+ class>
+ BOOST_ASIO_INITFN_RESULT_TYPE(RangeConnectHandler,void (error_code, typename Protocol::endpoint))
+ basic_stream<Protocol, Executor, RatePolicy>::
+@@ -839,7 +839,7 @@
+ template<class Protocol, class Executor, class RatePolicy>
+ template<
+ class Iterator,
+- class IteratorConnectHandler>
++ BOOST_ASIO_COMPLETION_TOKEN_FOR(void(error_code, Iterator)) IteratorConnectHandler>
+ BOOST_ASIO_INITFN_RESULT_TYPE(IteratorConnectHandler,void (error_code, Iterator))
+ basic_stream<Protocol, Executor, RatePolicy>::
+ async_connect(
+@@ -860,7 +860,7 @@
+ template<
+ class Iterator,
+ class ConnectCondition,
+- class IteratorConnectHandler>
++ BOOST_ASIO_COMPLETION_TOKEN_FOR(void(error_code, Iterator)) IteratorConnectHandler>
+ BOOST_ASIO_INITFN_RESULT_TYPE(IteratorConnectHandler,void (error_code, Iterator))
+ basic_stream<Protocol, Executor, RatePolicy>::
+ async_connect(
+@@ -881,7 +881,7 @@
+ //------------------------------------------------------------------------------
+
+ template<class Protocol, class Executor, class RatePolicy>
+-template<class MutableBufferSequence, class ReadHandler>
++template<class MutableBufferSequence, BOOST_BEAST_ASYNC_TPARAM2 ReadHandler>
+ BOOST_BEAST_ASYNC_RESULT2(ReadHandler)
+ basic_stream<Protocol, Executor, RatePolicy>::
+ async_read_some(
+@@ -901,7 +901,7 @@
+ }
+
+ template<class Protocol, class Executor, class RatePolicy>
+-template<class ConstBufferSequence, class WriteHandler>
++template<class ConstBufferSequence, BOOST_BEAST_ASYNC_TPARAM2 WriteHandler>
+ BOOST_BEAST_ASYNC_RESULT2(WriteHandler)
+ basic_stream<Protocol, Executor, RatePolicy>::
+ async_write_some(
+diff -aruN a/boost/beast/core/impl/buffered_read_stream.hpp b/boost/beast/core/impl/buffered_read_stream.hpp
+--- a/boost/beast/core/impl/buffered_read_stream.hpp 2020-04-22 09:34:50.000000000 -0400
++++ b/boost/beast/core/impl/buffered_read_stream.hpp 2020-05-02 13:50:11.144761733 -0400
+@@ -110,7 +110,7 @@
+ operator()(
+ ReadHandler&& h,
+ buffered_read_stream* s,
+- Buffers const& b)
++ Buffers const* b)
+ {
+ // If you get an error on the following line it means
+ // that your handler does not meet the documented type
+@@ -124,7 +124,7 @@
+ read_op<
+ Buffers,
+ typename std::decay<ReadHandler>::type>(
+- std::forward<ReadHandler>(h), *s, b);
++ std::forward<ReadHandler>(h), *s, *b);
+ }
+ };
+
+@@ -141,7 +141,7 @@
+ }
+
+ template<class Stream, class DynamicBuffer>
+-template<class ConstBufferSequence, class WriteHandler>
++template<class ConstBufferSequence, BOOST_BEAST_ASYNC_TPARAM2 WriteHandler>
+ BOOST_BEAST_ASYNC_RESULT2(WriteHandler)
+ buffered_read_stream<Stream, DynamicBuffer>::
+ async_write_some(
+@@ -153,7 +153,7 @@
+ static_assert(net::is_const_buffer_sequence<
+ ConstBufferSequence>::value,
+ "ConstBufferSequence type requirements not met");
+- static_assert(detail::is_invocable<WriteHandler,
++ static_assert(detail::is_completion_token_for<WriteHandler,
+ void(error_code, std::size_t)>::value,
+ "WriteHandler type requirements not met");
+ return next_layer_.async_write_some(buffers,
+@@ -212,7 +212,7 @@
+ }
+
+ template<class Stream, class DynamicBuffer>
+-template<class MutableBufferSequence, class ReadHandler>
++template<class MutableBufferSequence, BOOST_BEAST_ASYNC_TPARAM2 ReadHandler>
+ BOOST_BEAST_ASYNC_RESULT2(ReadHandler)
+ buffered_read_stream<Stream, DynamicBuffer>::
+ async_read_some(
+@@ -233,7 +233,7 @@
+ typename ops::run_read_op{},
+ handler,
+ this,
+- buffers);
++ &buffers);
+ }
+
+ } // beast
+diff -aruN a/boost/beast/core/impl/flat_stream.hpp b/boost/beast/core/impl/flat_stream.hpp
+--- a/boost/beast/core/impl/flat_stream.hpp 2020-04-22 09:34:50.000000000 -0400
++++ b/boost/beast/core/impl/flat_stream.hpp 2020-05-02 13:50:11.145761743 -0400
+@@ -144,7 +144,7 @@
+ template<class NextLayer>
+ template<
+ class MutableBufferSequence,
+- class ReadHandler>
++ BOOST_BEAST_ASYNC_TPARAM2 ReadHandler>
+ BOOST_BEAST_ASYNC_RESULT2(ReadHandler)
+ flat_stream<NextLayer>::
+ async_read_some(
+@@ -225,7 +225,7 @@
+ template<class NextLayer>
+ template<
+ class ConstBufferSequence,
+- class WriteHandler>
++ BOOST_BEAST_ASYNC_TPARAM2 WriteHandler>
+ BOOST_BEAST_ASYNC_RESULT2(WriteHandler)
+ flat_stream<NextLayer>::
+ async_write_some(
+diff -aruN a/boost/beast/_experimental/http/impl/icy_stream.hpp b/boost/beast/_experimental/http/impl/icy_stream.hpp
+--- a/boost/beast/_experimental/http/impl/icy_stream.hpp 2020-04-22 09:34:50.000000000 -0400
++++ b/boost/beast/_experimental/http/impl/icy_stream.hpp 2020-05-02 13:50:11.146761754 -0400
+@@ -259,7 +259,7 @@
+ template<class NextLayer>
+ template<
+ class MutableBufferSequence,
+- class ReadHandler>
++ BOOST_BEAST_ASYNC_TPARAM2 ReadHandler>
+ BOOST_BEAST_ASYNC_RESULT2(ReadHandler)
+ icy_stream<NextLayer>::
+ async_read_some(
+@@ -311,7 +311,7 @@
+ template<class NextLayer>
+ template<
+ class MutableBufferSequence,
+- class WriteHandler>
++ BOOST_BEAST_ASYNC_TPARAM2 WriteHandler>
+ BOOST_BEAST_ASYNC_RESULT2(WriteHandler)
+ icy_stream<NextLayer>::
+ async_write_some(
+diff -aruN a/boost/beast/_experimental/test/impl/stream.hpp b/boost/beast/_experimental/test/impl/stream.hpp
+--- a/boost/beast/_experimental/test/impl/stream.hpp 2020-04-22 09:34:50.000000000 -0400
++++ b/boost/beast/_experimental/test/impl/stream.hpp 2020-05-02 13:50:11.147761765 -0400
+@@ -306,7 +306,7 @@
+ return 0;
+ }
+
+-template<class MutableBufferSequence, class ReadHandler>
++template<class MutableBufferSequence, BOOST_BEAST_ASYNC_TPARAM2 ReadHandler>
+ BOOST_BEAST_ASYNC_RESULT2(ReadHandler)
+ stream::
+ async_read_some(
+@@ -386,7 +386,7 @@
+ return n;
+ }
+
+-template<class ConstBufferSequence, class WriteHandler>
++template<class ConstBufferSequence, BOOST_BEAST_ASYNC_TPARAM2 WriteHandler>
+ BOOST_BEAST_ASYNC_RESULT2(WriteHandler)
+ stream::
+ async_write_some(
+diff -aruN a/boost/beast/http/field.hpp b/boost/beast/http/field.hpp
+--- a/boost/beast/http/field.hpp 2020-04-22 09:34:50.000000000 -0400
++++ b/boost/beast/http/field.hpp 2020-05-02 13:50:11.149761786 -0400
+@@ -396,12 +396,9 @@
+ string_to_field(string_view s);
+
+ /// Write the text for a field name to an output stream.
+-inline
++BOOST_BEAST_DECL
+ std::ostream&
+-operator<<(std::ostream& os, field f)
+-{
+- return os << to_string(f);
+-}
++operator<<(std::ostream& os, field f);
+
+ } // http
+ } // beast
+diff -aruN a/boost/beast/http/impl/field.ipp b/boost/beast/http/impl/field.ipp
+--- a/boost/beast/http/impl/field.ipp 2020-04-22 09:34:50.000000000 -0400
++++ b/boost/beast/http/impl/field.ipp 2020-05-02 13:50:11.150761798 -0400
+@@ -11,10 +11,12 @@
+ #define BOOST_BEAST_HTTP_IMPL_FIELD_IPP
+
+ #include <boost/beast/http/field.hpp>
++#include <boost/assert.hpp>
+ #include <algorithm>
+ #include <array>
+ #include <cstring>
+-#include <boost/assert.hpp>
++#include <ostream>
++
+
+ namespace boost {
+ namespace beast {
+@@ -565,6 +567,12 @@
+ return detail::get_field_table().string_to_field(s);
+ }
+
++std::ostream&
++operator<<(std::ostream& os, field f)
++{
++ return os << to_string(f);
++}
++
+ } // http
+ } // beast
+ } // boost
+diff -aruN a/boost/beast/http/impl/file_body_win32.hpp b/boost/beast/http/impl/file_body_win32.hpp
+--- a/boost/beast/http/impl/file_body_win32.hpp 2020-04-22 09:34:50.000000000 -0400
++++ b/boost/beast/http/impl/file_body_win32.hpp 2020-05-02 13:50:11.150761798 -0400
+@@ -597,7 +597,7 @@
+ template<
+ class Protocol, class Executor,
+ bool isRequest, class Fields,
+- class WriteHandler>
++ BOOST_BEAST_ASYNC_TPARAM2 WriteHandler>
+ BOOST_BEAST_ASYNC_RESULT2(WriteHandler)
+ async_write_some(
+ net::basic_stream_socket<
+diff -aruN a/boost/beast/http/impl/read.hpp b/boost/beast/http/impl/read.hpp
+--- a/boost/beast/http/impl/read.hpp 2020-04-22 09:34:50.000000000 -0400
++++ b/boost/beast/http/impl/read.hpp 2020-05-02 13:50:11.150761798 -0400
+@@ -304,7 +304,7 @@
+ class AsyncReadStream,
+ class DynamicBuffer,
+ bool isRequest,
+- class ReadHandler>
++ BOOST_BEAST_ASYNC_TPARAM2 ReadHandler>
+ BOOST_BEAST_ASYNC_RESULT2(ReadHandler)
+ async_read_some(
+ AsyncReadStream& stream,
+@@ -373,7 +373,7 @@
+ class AsyncReadStream,
+ class DynamicBuffer,
+ bool isRequest,
+- class ReadHandler>
++ BOOST_BEAST_ASYNC_TPARAM2 ReadHandler>
+ BOOST_BEAST_ASYNC_RESULT2(ReadHandler)
+ async_read_header(
+ AsyncReadStream& stream,
+@@ -443,7 +443,7 @@
+ class AsyncReadStream,
+ class DynamicBuffer,
+ bool isRequest,
+- class ReadHandler>
++ BOOST_BEAST_ASYNC_TPARAM2 ReadHandler>
+ BOOST_BEAST_ASYNC_RESULT2(ReadHandler)
+ async_read(
+ AsyncReadStream& stream,
+@@ -531,7 +531,7 @@
+ class AsyncReadStream,
+ class DynamicBuffer,
+ bool isRequest, class Body, class Allocator,
+- class ReadHandler>
++ BOOST_BEAST_ASYNC_TPARAM2 ReadHandler>
+ BOOST_BEAST_ASYNC_RESULT2(ReadHandler)
+ async_read(
+ AsyncReadStream& stream,
+diff -aruN a/boost/beast/http/impl/write.hpp b/boost/beast/http/impl/write.hpp
+--- a/boost/beast/http/impl/write.hpp 2020-04-22 09:34:50.000000000 -0400
++++ b/boost/beast/http/impl/write.hpp 2020-05-02 13:50:11.150761798 -0400
+@@ -463,7 +463,7 @@
+ template<
+ class AsyncWriteStream,
+ bool isRequest, class Body, class Fields,
+- class WriteHandler>
++ BOOST_BEAST_ASYNC_TPARAM2 WriteHandler>
+ BOOST_BEAST_ASYNC_RESULT2(WriteHandler)
+ async_write_some_impl(
+ AsyncWriteStream& stream,
+@@ -526,7 +526,7 @@
+ template<
+ class AsyncWriteStream,
+ bool isRequest, class Body, class Fields,
+- class WriteHandler>
++ BOOST_BEAST_ASYNC_TPARAM2 WriteHandler>
+ BOOST_BEAST_ASYNC_RESULT2(WriteHandler)
+ async_write_some(
+ AsyncWriteStream& stream,
+@@ -608,7 +608,7 @@
+ template<
+ class AsyncWriteStream,
+ bool isRequest, class Body, class Fields,
+- class WriteHandler>
++ BOOST_BEAST_ASYNC_TPARAM2 WriteHandler>
+ BOOST_BEAST_ASYNC_RESULT2(WriteHandler)
+ async_write_header(
+ AsyncWriteStream& stream,
+@@ -681,7 +681,7 @@
+ template<
+ class AsyncWriteStream,
+ bool isRequest, class Body, class Fields,
+- class WriteHandler>
++ BOOST_BEAST_ASYNC_TPARAM2 WriteHandler>
+ BOOST_BEAST_ASYNC_RESULT2(WriteHandler)
+ async_write(
+ AsyncWriteStream& stream,
+@@ -801,7 +801,7 @@
+ template<
+ class AsyncWriteStream,
+ bool isRequest, class Body, class Fields,
+- class WriteHandler>
++ BOOST_BEAST_ASYNC_TPARAM2 WriteHandler>
+ BOOST_BEAST_ASYNC_RESULT2(WriteHandler)
+ async_write(
+ AsyncWriteStream& stream,
+@@ -830,7 +830,7 @@
+ template<
+ class AsyncWriteStream,
+ bool isRequest, class Body, class Fields,
+- class WriteHandler>
++ BOOST_BEAST_ASYNC_TPARAM2 WriteHandler>
+ BOOST_BEAST_ASYNC_RESULT2(WriteHandler)
+ async_write(
+ AsyncWriteStream& stream,
+diff -aruN a/boost/beast/http/span_body.hpp b/boost/beast/http/span_body.hpp
+--- a/boost/beast/http/span_body.hpp 2020-04-22 09:34:50.000000000 -0400
++++ b/boost/beast/http/span_body.hpp 2020-05-02 13:50:11.151761808 -0400
+@@ -36,8 +36,10 @@
+ struct span_body
+ {
+ private:
+- static_assert(std::is_pod<T>::value,
+- "POD requirements not met");
++ static_assert(
++ std::is_trivial<T>::value &&
++ std::is_standard_layout<T>::value,
++ "POD requirements not met");
+
+ public:
+ /** The type of container used for the body
+diff -aruN a/boost/beast/ssl/ssl_stream.hpp b/boost/beast/ssl/ssl_stream.hpp
+--- a/boost/beast/ssl/ssl_stream.hpp 2020-04-22 09:34:50.000000000 -0400
++++ b/boost/beast/ssl/ssl_stream.hpp 2020-05-02 13:50:11.151761808 -0400
+@@ -555,7 +555,7 @@
+ need to ensure that all data is written before the asynchronous operation
+ completes.
+ */
+- template<class ConstBufferSequence, class WriteHandler>
++ template<class ConstBufferSequence, BOOST_BEAST_ASYNC_TPARAM2 WriteHandler>
+ BOOST_ASIO_INITFN_RESULT_TYPE(WriteHandler, void(boost::system::error_code, std::size_t))
+ async_write_some(ConstBufferSequence const& buffers,
+ BOOST_ASIO_MOVE_ARG(WriteHandler) handler)
+@@ -636,7 +636,7 @@
+ if you need to ensure that the requested amount of data is read before
+ the asynchronous operation completes.
+ */
+- template<class MutableBufferSequence, class ReadHandler>
++ template<class MutableBufferSequence, BOOST_BEAST_ASYNC_TPARAM2 ReadHandler>
+ BOOST_ASIO_INITFN_RESULT_TYPE(ReadHandler, void(boost::system::error_code, std::size_t))
+ async_read_some(MutableBufferSequence const& buffers,
+ BOOST_ASIO_MOVE_ARG(ReadHandler) handler)
+diff -aruN a/boost/beast/version.hpp b/boost/beast/version.hpp
+--- a/boost/beast/version.hpp 2020-04-22 09:34:50.000000000 -0400
++++ b/boost/beast/version.hpp 2020-05-02 13:50:11.151761808 -0400
+@@ -20,7 +20,7 @@
+ This is a simple integer that is incremented by one every
+ time a set of code changes is merged to the develop branch.
+ */
+-#define BOOST_BEAST_VERSION 290
++#define BOOST_BEAST_VERSION 292
+
+ #define BOOST_BEAST_VERSION_STRING "Boost.Beast/" BOOST_STRINGIZE(BOOST_BEAST_VERSION)
+
+diff -aruN a/boost/beast/websocket/impl/accept.hpp b/boost/beast/websocket/impl/accept.hpp
+--- a/boost/beast/websocket/impl/accept.hpp 2020-04-22 09:34:50.000000000 -0400
++++ b/boost/beast/websocket/impl/accept.hpp 2020-05-02 13:50:11.153761830 -0400
+@@ -542,7 +542,7 @@
+
+ template<class NextLayer, bool deflateSupported>
+ template<
+- class AcceptHandler>
++ BOOST_BEAST_ASYNC_TPARAM1 AcceptHandler>
+ BOOST_BEAST_ASYNC_RESULT1(AcceptHandler)
+ stream<NextLayer, deflateSupported>::
+ async_accept(
+@@ -564,7 +564,7 @@
+ template<class NextLayer, bool deflateSupported>
+ template<
+ class ResponseDecorator,
+- class AcceptHandler>
++ BOOST_BEAST_ASYNC_TPARAM1 AcceptHandler>
+ BOOST_BEAST_ASYNC_RESULT1(AcceptHandler)
+ stream<NextLayer, deflateSupported>::
+ async_accept_ex(
+@@ -590,7 +590,7 @@
+ template<class NextLayer, bool deflateSupported>
+ template<
+ class ConstBufferSequence,
+- class AcceptHandler>
++ BOOST_BEAST_ASYNC_TPARAM1 AcceptHandler>
+ BOOST_BEAST_ASYNC_RESULT1(AcceptHandler)
+ stream<NextLayer, deflateSupported>::
+ async_accept(
+@@ -621,7 +621,7 @@
+ template<
+ class ConstBufferSequence,
+ class ResponseDecorator,
+- class AcceptHandler>
++ BOOST_BEAST_ASYNC_TPARAM1 AcceptHandler>
+ BOOST_BEAST_ASYNC_RESULT1(AcceptHandler)
+ stream<NextLayer, deflateSupported>::
+ async_accept_ex(
+@@ -654,7 +654,7 @@
+ template<class NextLayer, bool deflateSupported>
+ template<
+ class Body, class Allocator,
+- class AcceptHandler>
++ BOOST_BEAST_ASYNC_TPARAM1 AcceptHandler>
+ BOOST_BEAST_ASYNC_RESULT1(AcceptHandler)
+ stream<NextLayer, deflateSupported>::
+ async_accept(
+@@ -678,7 +678,7 @@
+ template<
+ class Body, class Allocator,
+ class ResponseDecorator,
+- class AcceptHandler>
++ BOOST_BEAST_ASYNC_TPARAM1 AcceptHandler>
+ BOOST_BEAST_ASYNC_RESULT1(AcceptHandler)
+ stream<NextLayer, deflateSupported>::
+ async_accept_ex(
+diff -aruN a/boost/beast/websocket/impl/close.hpp b/boost/beast/websocket/impl/close.hpp
+--- a/boost/beast/websocket/impl/close.hpp 2020-04-22 09:34:50.000000000 -0400
++++ b/boost/beast/websocket/impl/close.hpp 2020-05-02 13:50:11.153761830 -0400
+@@ -382,7 +382,7 @@
+ }
+
+ template<class NextLayer, bool deflateSupported>
+-template<class CloseHandler>
++template<BOOST_BEAST_ASYNC_TPARAM1 CloseHandler>
+ BOOST_BEAST_ASYNC_RESULT1(CloseHandler)
+ stream<NextLayer, deflateSupported>::
+ async_close(close_reason const& cr, CloseHandler&& handler)
+diff -aruN a/boost/beast/websocket/impl/handshake.hpp b/boost/beast/websocket/impl/handshake.hpp
+--- a/boost/beast/websocket/impl/handshake.hpp 2020-04-22 09:34:50.000000000 -0400
++++ b/boost/beast/websocket/impl/handshake.hpp 2020-05-02 13:50:11.153761830 -0400
+@@ -268,7 +268,7 @@
+ //------------------------------------------------------------------------------
+
+ template<class NextLayer, bool deflateSupported>
+-template<class HandshakeHandler>
++template<BOOST_BEAST_ASYNC_TPARAM1 HandshakeHandler>
+ BOOST_BEAST_ASYNC_RESULT1(HandshakeHandler)
+ stream<NextLayer, deflateSupported>::
+ async_handshake(
+@@ -293,7 +293,7 @@
+ }
+
+ template<class NextLayer, bool deflateSupported>
+-template<class HandshakeHandler>
++template<BOOST_BEAST_ASYNC_TPARAM1 HandshakeHandler>
+ BOOST_BEAST_ASYNC_RESULT1(HandshakeHandler)
+ stream<NextLayer, deflateSupported>::
+ async_handshake(
+diff -aruN a/boost/beast/websocket/impl/ping.hpp b/boost/beast/websocket/impl/ping.hpp
+--- a/boost/beast/websocket/impl/ping.hpp 2020-04-22 09:34:50.000000000 -0400
++++ b/boost/beast/websocket/impl/ping.hpp 2020-05-02 13:50:11.153761830 -0400
+@@ -288,7 +288,7 @@
+ }
+
+ template<class NextLayer, bool deflateSupported>
+-template<class WriteHandler>
++template<BOOST_BEAST_ASYNC_TPARAM1 WriteHandler>
+ BOOST_BEAST_ASYNC_RESULT1(WriteHandler)
+ stream<NextLayer, deflateSupported>::
+ async_ping(ping_data const& payload, WriteHandler&& handler)
+@@ -306,7 +306,7 @@
+ }
+
+ template<class NextLayer, bool deflateSupported>
+-template<class WriteHandler>
++template<BOOST_BEAST_ASYNC_TPARAM1 WriteHandler>
+ BOOST_BEAST_ASYNC_RESULT1(WriteHandler)
+ stream<NextLayer, deflateSupported>::
+ async_pong(ping_data const& payload, WriteHandler&& handler)
+diff -aruN a/boost/beast/websocket/impl/read.hpp b/boost/beast/websocket/impl/read.hpp
+--- a/boost/beast/websocket/impl/read.hpp 2020-04-22 09:34:50.000000000 -0400
++++ b/boost/beast/websocket/impl/read.hpp 2020-05-02 13:50:11.153761830 -0400
+@@ -804,7 +804,7 @@
+ }
+
+ template<class NextLayer, bool deflateSupported>
+-template<class DynamicBuffer, class ReadHandler>
++template<class DynamicBuffer, BOOST_BEAST_ASYNC_TPARAM2 ReadHandler>
+ BOOST_BEAST_ASYNC_RESULT2(ReadHandler)
+ stream<NextLayer, deflateSupported>::
+ async_read(DynamicBuffer& buffer, ReadHandler&& handler)
+@@ -878,7 +878,7 @@
+ }
+
+ template<class NextLayer, bool deflateSupported>
+-template<class DynamicBuffer, class ReadHandler>
++template<class DynamicBuffer, BOOST_BEAST_ASYNC_TPARAM2 ReadHandler>
+ BOOST_BEAST_ASYNC_RESULT2(ReadHandler)
+ stream<NextLayer, deflateSupported>::
+ async_read_some(
+@@ -1263,7 +1263,7 @@
+ }
+
+ template<class NextLayer, bool deflateSupported>
+-template<class MutableBufferSequence, class ReadHandler>
++template<class MutableBufferSequence, BOOST_BEAST_ASYNC_TPARAM2 ReadHandler>
+ BOOST_BEAST_ASYNC_RESULT2(ReadHandler)
+ stream<NextLayer, deflateSupported>::
+ async_read_some(
+diff -aruN a/boost/beast/websocket/impl/write.hpp b/boost/beast/websocket/impl/write.hpp
+--- a/boost/beast/websocket/impl/write.hpp 2020-04-22 09:34:50.000000000 -0400
++++ b/boost/beast/websocket/impl/write.hpp 2020-05-02 13:50:11.153761830 -0400
+@@ -700,7 +700,7 @@
+ }
+
+ template<class NextLayer, bool deflateSupported>
+-template<class ConstBufferSequence, class WriteHandler>
++template<class ConstBufferSequence, BOOST_BEAST_ASYNC_TPARAM2 WriteHandler>
+ BOOST_BEAST_ASYNC_RESULT2(WriteHandler)
+ stream<NextLayer, deflateSupported>::
+ async_write_some(bool fin,
+@@ -756,7 +756,7 @@
+ }
+
+ template<class NextLayer, bool deflateSupported>
+-template<class ConstBufferSequence, class WriteHandler>
++template<class ConstBufferSequence, BOOST_BEAST_ASYNC_TPARAM2 WriteHandler>
+ BOOST_BEAST_ASYNC_RESULT2(WriteHandler)
+ stream<NextLayer, deflateSupported>::
+ async_write(
+diff -aruN a/boost/beast/websocket/stream.hpp b/boost/beast/websocket/stream.hpp
+--- a/boost/beast/websocket/stream.hpp 2020-04-22 09:34:50.000000000 -0400
++++ b/boost/beast/websocket/stream.hpp 2020-05-02 13:50:11.154761841 -0400
+@@ -2634,7 +2634,7 @@
+
+ template<
+ class ResponseDecorator,
+- class AcceptHandler>
++ BOOST_BEAST_ASYNC_TPARAM1 AcceptHandler>
+ BOOST_BEAST_ASYNC_RESULT1(AcceptHandler)
+ async_accept_ex(
+ ResponseDecorator const& decorator,
+@@ -2643,7 +2643,7 @@
+ template<
+ class ConstBufferSequence,
+ class ResponseDecorator,
+- class AcceptHandler>
++ BOOST_BEAST_ASYNC_TPARAM1 AcceptHandler>
+ BOOST_BEAST_ASYNC_RESULT1(AcceptHandler)
+ async_accept_ex(
+ ConstBufferSequence const& buffers,
+@@ -2656,7 +2656,7 @@
+ template<
+ class Body, class Allocator,
+ class ResponseDecorator,
+- class AcceptHandler>
++ BOOST_BEAST_ASYNC_TPARAM1 AcceptHandler>
+ BOOST_BEAST_ASYNC_RESULT1(AcceptHandler)
+ async_accept_ex(
+ http::request<Body,
+diff -aruN a/libs/beast/CHANGELOG.md b/libs/beast/CHANGELOG.md
+--- a/libs/beast/CHANGELOG.md 2020-04-22 09:34:50.000000000 -0400
++++ b/libs/beast/CHANGELOG.md 2020-05-02 13:51:02.388315008 -0400
+@@ -1,3 +1,25 @@
++Version 292:
++
++* Fix compile errors on Visual Studio with /std:c++latest
++* Fix standalone compilation error with std::string_view
++* OpenSSL 1.0.2 or later is required
++* Fix c++20 deprecation warning in span_body
++
++--------------------------------------------------------------------------------
++
++Version 291:
++
++* Test websocket with use_awaitable
++* Test http write with use_awaitable
++* Test http read with use_awaitable
++* Fix use buffered_read_stream with use_awaitable
++* Implement is_completion_token_for trait
++* Test use_awaitable with basic_stream
++* Fix async_detect_ssl with use_awaitable
++* Add clang coroutines-ts to circleci config
++
++--------------------------------------------------------------------------------
++
+ Version 290:
+
+ * Travis build host now bionic
+diff -aruN a/libs/beast/CMakeLists.txt b/libs/beast/CMakeLists.txt
+--- a/libs/beast/CMakeLists.txt 2020-04-22 09:34:50.000000000 -0400
++++ b/libs/beast/CMakeLists.txt 2020-05-02 13:51:02.389315019 -0400
+@@ -40,7 +40,7 @@
+ #
+ #-------------------------------------------------------------------------------
+
+-project (Beast VERSION 290)
++project (Beast VERSION 292)
+
+ set_property (GLOBAL PROPERTY USE_FOLDERS ON)
+ option (Beast_BUILD_EXAMPLES "Build examples" ON)
+diff -aruN a/libs/beast/doc/qbk/01_intro/_intro.qbk b/libs/beast/doc/qbk/01_intro/_intro.qbk
+--- a/libs/beast/doc/qbk/01_intro/_intro.qbk 2020-04-22 09:34:50.000000000 -0400
++++ b/libs/beast/doc/qbk/01_intro/_intro.qbk 2020-05-02 13:51:02.391315040 -0400
+@@ -58,7 +58,7 @@
+
+ * [*C++11:] Robust support for most language features.
+ * [*Boost:] Beast only works with Boost, not stand-alone Asio
+-* [*OpenSSL:] Required to build the tests, examples, and to use TLS/Secure sockets.
++* [*OpenSSL:] Version 1.0.2 or higher. Required to build the tests, examples, and to use TLS/Secure sockets.
+
+ Tested with these compilers: msvc-14+, gcc 4.8.4+, clang 3.6+.
+
+diff -aruN a/libs/beast/test/beast/core/async_base.cpp b/libs/beast/test/beast/core/async_base.cpp
+--- a/libs/beast/test/beast/core/async_base.cpp 2020-04-22 09:34:50.000000000 -0400
++++ b/libs/beast/test/beast/core/async_base.cpp 2020-05-02 13:51:02.470315892 -0400
+@@ -585,7 +585,7 @@
+ //--------------------------------------------------------------------------
+
+ // Asynchronously read into a buffer until the buffer is full, or an error occurs
+- template<class AsyncReadStream, class ReadHandler>
++ template<class AsyncReadStream, BOOST_BEAST_ASYNC_TPARAM2 ReadHandler>
+ typename net::async_result<ReadHandler, void(error_code, std::size_t)>::return_type
+ async_read(AsyncReadStream& stream, net::mutable_buffer buffer, ReadHandler&& handler)
+ {
+diff -aruN a/libs/beast/test/beast/core/basic_stream.cpp b/libs/beast/test/beast/core/basic_stream.cpp
+--- a/libs/beast/test/beast/core/basic_stream.cpp 2020-04-22 09:34:50.000000000 -0400
++++ b/libs/beast/test/beast/core/basic_stream.cpp 2020-05-02 13:51:02.470315892 -0400
+@@ -30,6 +30,13 @@
+ #include <array>
+ #include <thread>
+
++#if BOOST_ASIO_HAS_CO_AWAIT
++#include <boost/asio/awaitable.hpp>
++#include <boost/asio/co_spawn.hpp>
++#include <boost/asio/use_awaitable.hpp>
++#endif
++
++
+ namespace boost {
+ namespace beast {
+
+@@ -258,7 +265,7 @@
+ {
+ string_view s_;
+ net::ip::tcp::socket socket_;
+-
++
+ public:
+ session(
+ string_view s,
+@@ -1297,6 +1304,52 @@
+
+ //--------------------------------------------------------------------------
+
++#if BOOST_ASIO_HAS_CO_AWAIT
++ void testAwaitableCompilation(
++ basic_stream<net::ip::tcp>& stream,
++ net::mutable_buffer outbuf,
++ net::const_buffer inbuf,
++ net::ip::tcp::resolver::results_type resolve_results)
++ {
++ static_assert(std::is_same_v<
++ net::awaitable<std::size_t>, decltype(
++ stream.async_read_some(outbuf, net::use_awaitable))>);
++
++ static_assert(std::is_same_v<
++ net::awaitable<std::size_t>, decltype(
++ stream.async_write_some(inbuf, net::use_awaitable))>);
++
++ static_assert(std::is_same_v<
++ net::awaitable<net::ip::tcp::resolver::results_type::const_iterator>, decltype(
++ stream.async_connect(
++ resolve_results.begin(),
++ resolve_results.end(),
++ net::use_awaitable))>);
++
++ static_assert(std::is_same_v<
++ net::awaitable<net::ip::tcp::endpoint>, decltype(
++ stream.async_connect(
++ resolve_results,
++ net::use_awaitable))>);
++
++ static_assert(std::is_same_v<
++ net::awaitable<void>, decltype(
++ stream.async_connect(
++ resolve_results.begin()->endpoint(),
++ net::use_awaitable))>);
++
++ auto comparison_function = [](error_code&, net::ip::tcp::endpoint) { return true; };
++
++ static_assert(std::is_same_v<
++ net::awaitable<net::ip::tcp::resolver::results_type::const_iterator>, decltype(
++ stream.async_connect(
++ resolve_results.begin(),
++ resolve_results.end(),
++ comparison_function,
++ net::use_awaitable))>);
++ }
++#endif
++
+ void
+ run()
+ {
+@@ -1307,6 +1360,11 @@
+ testMembers();
+ testJavadocs();
+ testIssue1589();
++
++#if BOOST_ASIO_HAS_CO_AWAIT
++ // test for compilation success only
++ boost::ignore_unused(&basic_stream_test::testAwaitableCompilation);
++#endif
+ }
+ };
+
+diff -aruN a/libs/beast/test/beast/core/buffered_read_stream.cpp b/libs/beast/test/beast/core/buffered_read_stream.cpp
+--- a/libs/beast/test/beast/core/buffered_read_stream.cpp 2020-04-22 09:34:50.000000000 -0400
++++ b/libs/beast/test/beast/core/buffered_read_stream.cpp 2020-05-02 13:51:02.470315892 -0400
+@@ -21,6 +21,9 @@
+ #include <boost/asio/spawn.hpp>
+ #include <boost/asio/strand.hpp>
+ #include <boost/optional.hpp>
++#if BOOST_ASIO_HAS_CO_AWAIT
++#include <boost/asio/use_awaitable.hpp>
++#endif
+
+ namespace boost {
+ namespace beast {
+@@ -211,6 +214,22 @@
+ }
+ };
+
++#if BOOST_ASIO_HAS_CO_AWAIT
++ void testAwaitableCompiles(
++ buffered_read_stream<test::stream, flat_buffer>& stream,
++ net::mutable_buffer rxbuf,
++ net::const_buffer txbuf)
++ {
++ static_assert(std::is_same_v<
++ net::awaitable<std::size_t>, decltype(
++ stream.async_read_some(rxbuf, net::use_awaitable))>);
++
++ static_assert(std::is_same_v<
++ net::awaitable<std::size_t>, decltype(
++ stream.async_write_some(txbuf, net::use_awaitable))>);
++ }
++#endif
++
+ void run() override
+ {
+ testSpecialMembers();
+@@ -221,6 +240,10 @@
+ });
+
+ testAsyncLoop();
++
++#if BOOST_ASIO_HAS_CO_AWAIT
++ boost::ignore_unused(&buffered_read_stream_test::testAwaitableCompiles);
++#endif
+ }
+ };
+
+diff -aruN a/libs/beast/test/beast/core/detect_ssl.cpp b/libs/beast/test/beast/core/detect_ssl.cpp
+--- a/libs/beast/test/beast/core/detect_ssl.cpp 2020-04-22 09:34:50.000000000 -0400
++++ b/libs/beast/test/beast/core/detect_ssl.cpp 2020-05-02 13:51:02.470315892 -0400
+@@ -16,6 +16,11 @@
+ #include <boost/beast/core/flat_buffer.hpp>
+ #include <boost/beast/core/string.hpp>
+ #include <boost/core/exchange.hpp>
++#if BOOST_ASIO_HAS_CO_AWAIT
++#include <boost/asio/awaitable.hpp>
++#include <boost/asio/co_spawn.hpp>
++#include <boost/asio/use_awaitable.hpp>
++#endif
+ namespace boost {
+ namespace beast {
+
+@@ -166,12 +171,25 @@
+ }
+ }
+
++#if BOOST_ASIO_HAS_CO_AWAIT
++ void testAwaitableCompiles(test::stream& stream, flat_buffer& b)
++ {
++ static_assert(
++ std::is_same_v<
++ net::awaitable<bool>, decltype(
++ async_detect_ssl(stream, b, net::use_awaitable))>);
++ }
++#endif
++
+ void
+ run() override
+ {
+ testDetect();
+ testRead();
+ testAsyncRead();
++#if BOOST_ASIO_HAS_CO_AWAIT
++ boost::ignore_unused(&detect_ssl_test::testAwaitableCompiles);
++#endif
+ }
+ };
+
+diff -aruN a/libs/beast/test/beast/core/flat_stream.cpp b/libs/beast/test/beast/core/flat_stream.cpp
+--- a/libs/beast/test/beast/core/flat_stream.cpp 2020-04-22 09:34:50.000000000 -0400
++++ b/libs/beast/test/beast/core/flat_stream.cpp 2020-05-02 13:51:02.471315902 -0400
+@@ -17,6 +17,9 @@
+ #include <boost/beast/core/role.hpp>
+ #include <initializer_list>
+ #include <vector>
++#if BOOST_ASIO_HAS_CO_AWAIT
++#include <boost/asio/use_awaitable.hpp>
++#endif
+
+ namespace boost {
+ namespace beast {
+@@ -208,11 +211,30 @@
+ check({1,2,3,4}, 3, 3, true);
+ }
+
++#if BOOST_ASIO_HAS_CO_AWAIT
++ void testAwaitableCompiles(
++ flat_stream<test::stream>& stream,
++ net::mutable_buffer rxbuf,
++ net::const_buffer txbuf)
++ {
++ static_assert(std::is_same_v<
++ net::awaitable<std::size_t>, decltype(
++ stream.async_read_some(rxbuf, net::use_awaitable))>);
++
++ static_assert(std::is_same_v<
++ net::awaitable<std::size_t>, decltype(
++ stream.async_write_some(txbuf, net::use_awaitable))>);
++ }
++#endif
++
+ void
+ run() override
+ {
+ testMembers();
+ testSplit();
++#if BOOST_ASIO_HAS_CO_AWAIT
++ boost::ignore_unused(&flat_stream_test::testAwaitableCompiles);
++#endif
+ }
+ };
+
+diff -aruN a/libs/beast/test/beast/core/stream_traits.cpp b/libs/beast/test/beast/core/stream_traits.cpp
+--- a/libs/beast/test/beast/core/stream_traits.cpp 2020-04-22 09:34:50.000000000 -0400
++++ b/libs/beast/test/beast/core/stream_traits.cpp 2020-05-02 13:51:02.471315902 -0400
+@@ -214,14 +214,14 @@
+ struct async_read_stream
+ {
+ net::io_context::executor_type get_executor() noexcept;
+- template<class MutableBufferSequence, class ReadHandler>
++ template<class MutableBufferSequence, BOOST_BEAST_ASYNC_TPARAM2 ReadHandler>
+ void async_read_some(MutableBufferSequence const&, ReadHandler&&);
+ };
+
+ struct async_write_stream
+ {
+ net::io_context::executor_type get_executor() noexcept;
+- template<class ConstBufferSequence, class WriteHandler>
++ template<class ConstBufferSequence, BOOST_BEAST_ASYNC_TPARAM2 WriteHandler>
+ void async_write_some(ConstBufferSequence const&, WriteHandler&&);
+ };
+
+@@ -232,9 +232,9 @@
+ struct async_stream : async_read_stream, async_write_stream
+ {
+ net::io_context::executor_type get_executor() noexcept;
+- template<class MutableBufferSequence, class ReadHandler>
++ template<class MutableBufferSequence, BOOST_BEAST_ASYNC_TPARAM2 ReadHandler>
+ void async_read_some(MutableBufferSequence const&, ReadHandler&&);
+- template<class ConstBufferSequence, class WriteHandler>
++ template<class ConstBufferSequence, BOOST_BEAST_ASYNC_TPARAM2 WriteHandler>
+ void async_write_some(ConstBufferSequence const&, WriteHandler&&);
+ };
+
+diff -aruN a/libs/beast/test/beast/http/CMakeLists.txt b/libs/beast/test/beast/http/CMakeLists.txt
+--- a/libs/beast/test/beast/http/CMakeLists.txt 2020-04-22 09:34:50.000000000 -0400
++++ b/libs/beast/test/beast/http/CMakeLists.txt 2020-05-02 13:51:02.472315914 -0400
+@@ -26,6 +26,7 @@
+ empty_body.cpp
+ error.cpp
+ field.cpp
++ field_compiles.cpp
+ fields.cpp
+ file_body.cpp
+ message.cpp
+diff -aruN a/libs/beast/test/beast/http/field_compiles.cpp b/libs/beast/test/beast/http/field_compiles.cpp
+--- a/libs/beast/test/beast/http/field_compiles.cpp 1969-12-31 19:00:00.000000000 -0500
++++ b/libs/beast/test/beast/http/field_compiles.cpp 2020-05-02 13:51:02.473315924 -0400
+@@ -0,0 +1,11 @@
++//
++// Copyright (c) 2016-2019 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)
++//
++// Official repository: https://github.com/boostorg/beast
++//
++
++// Test that header file is self-contained.
++#include <boost/beast/http/field.hpp>
+diff -aruN a/libs/beast/test/beast/http/Jamfile b/libs/beast/test/beast/http/Jamfile
+--- a/libs/beast/test/beast/http/Jamfile 2020-04-22 09:34:50.000000000 -0400
++++ b/libs/beast/test/beast/http/Jamfile 2020-05-02 13:51:02.472315914 -0400
+@@ -16,6 +16,7 @@
+ dynamic_body.cpp
+ error.cpp
+ field.cpp
++ field_compiles.cpp
+ fields.cpp
+ file_body.cpp
+ message.cpp
+diff -aruN a/libs/beast/test/beast/http/read.cpp b/libs/beast/test/beast/http/read.cpp
+--- a/libs/beast/test/beast/http/read.cpp 2020-04-22 09:34:50.000000000 -0400
++++ b/libs/beast/test/beast/http/read.cpp 2020-05-02 13:51:02.472315914 -0400
+@@ -25,6 +25,9 @@
+ #include <boost/asio/strand.hpp>
+ #include <boost/asio/ip/tcp.hpp>
+ #include <atomic>
++#if BOOST_ASIO_HAS_CO_AWAIT
++#include <boost/asio/use_awaitable.hpp>
++#endif
+
+ namespace boost {
+ namespace beast {
+@@ -529,6 +532,49 @@
+ }
+ }
+
++#if BOOST_ASIO_HAS_CO_AWAIT
++ void testAwaitableCompiles(
++ test::stream& stream,
++ flat_buffer& dynbuf,
++ parser<true, string_body>& request_parser,
++ request<http::string_body>& request,
++ parser<false, string_body>& response_parser,
++ response<http::string_body>& response)
++ {
++ static_assert(std::is_same_v<
++ net::awaitable<std::size_t>, decltype(
++ http::async_read(stream, dynbuf, request, net::use_awaitable))>);
++
++ static_assert(std::is_same_v<
++ net::awaitable<std::size_t>, decltype(
++ http::async_read(stream, dynbuf, request_parser, net::use_awaitable))>);
++
++ static_assert(std::is_same_v<
++ net::awaitable<std::size_t>, decltype(
++ http::async_read(stream, dynbuf, response, net::use_awaitable))>);
++
++ static_assert(std::is_same_v<
++ net::awaitable<std::size_t>, decltype(
++ http::async_read(stream, dynbuf, response_parser, net::use_awaitable))>);
++
++ static_assert(std::is_same_v<
++ net::awaitable<std::size_t>, decltype(
++ http::async_read_some(stream, dynbuf, request_parser, net::use_awaitable))>);
++
++ static_assert(std::is_same_v<
++ net::awaitable<std::size_t>, decltype(
++ http::async_read_some(stream, dynbuf, response_parser, net::use_awaitable))>);
++
++ static_assert(std::is_same_v<
++ net::awaitable<std::size_t>, decltype(
++ http::async_read_header(stream, dynbuf, request_parser, net::use_awaitable))>);
++
++ static_assert(std::is_same_v<
++ net::awaitable<std::size_t>, decltype(
++ http::async_read_header(stream, dynbuf, response_parser, net::use_awaitable))>);
++ }
++#endif
++
+ void
+ run() override
+ {
+@@ -552,6 +598,9 @@
+ testRegression430();
+ testReadGrind();
+ testAsioHandlerInvoke();
++#if BOOST_ASIO_HAS_CO_AWAIT
++ boost::ignore_unused(&read_test::testAwaitableCompiles);
++#endif
+ }
+ };
+
+diff -aruN a/libs/beast/test/beast/http/write.cpp b/libs/beast/test/beast/http/write.cpp
+--- a/libs/beast/test/beast/http/write.cpp 2020-04-22 09:34:50.000000000 -0400
++++ b/libs/beast/test/beast/http/write.cpp 2020-05-02 13:51:02.473315924 -0400
+@@ -26,6 +26,9 @@
+ #include <boost/asio/strand.hpp>
+ #include <sstream>
+ #include <string>
++#if BOOST_ASIO_HAS_CO_AWAIT
++#include <boost/asio/use_awaitable.hpp>
++#endif
+
+ namespace boost {
+ namespace beast {
+@@ -994,6 +997,59 @@
+ }
+ }
+
++#if BOOST_ASIO_HAS_CO_AWAIT
++ void testAwaitableCompiles(
++ test::stream& stream,
++ serializer<true, string_body>& request_serializer,
++ request<string_body>& req,
++ request<string_body> const& creq,
++ serializer<false, string_body>& response_serializer,
++ response<string_body>& resp,
++ response<string_body> const& cresp)
++ {
++ static_assert(std::is_same_v<
++ net::awaitable<std::size_t>, decltype(
++ http::async_write(stream, request_serializer, net::use_awaitable))>);
++
++ static_assert(std::is_same_v<
++ net::awaitable<std::size_t>, decltype(
++ http::async_write(stream, response_serializer, net::use_awaitable))>);
++
++ static_assert(std::is_same_v<
++ net::awaitable<std::size_t>, decltype(
++ http::async_write(stream, req, net::use_awaitable))>);
++
++ static_assert(std::is_same_v<
++ net::awaitable<std::size_t>, decltype(
++ http::async_write(stream, creq, net::use_awaitable))>);
++
++ static_assert(std::is_same_v<
++ net::awaitable<std::size_t>, decltype(
++ http::async_write(stream, resp, net::use_awaitable))>);
++
++ static_assert(std::is_same_v<
++ net::awaitable<std::size_t>, decltype(
++ http::async_write(stream, cresp, net::use_awaitable))>);
++
++ static_assert(std::is_same_v<
++ net::awaitable<std::size_t>, decltype(
++ http::async_write_some(stream, request_serializer, net::use_awaitable))>);
++
++ static_assert(std::is_same_v<
++ net::awaitable<std::size_t>, decltype(
++ http::async_write_some(stream, response_serializer, net::use_awaitable))>);
++
++ static_assert(std::is_same_v<
++ net::awaitable<std::size_t>, decltype(
++ http::async_write_header(stream, request_serializer, net::use_awaitable))>);
++
++ static_assert(std::is_same_v<
++ net::awaitable<std::size_t>, decltype(
++ http::async_write_header(stream, response_serializer, net::use_awaitable))>);
++ }
++#endif
++
++
+ void
+ run() override
+ {
+@@ -1017,6 +1073,9 @@
+ });
+ testAsioHandlerInvoke();
+ testBodyWriters();
++#if BOOST_ASIO_HAS_CO_AWAIT
++ boost::ignore_unused(&write_test::testAwaitableCompiles);
++#endif
+ }
+ };
+
+diff -aruN a/libs/beast/test/beast/websocket/accept.cpp b/libs/beast/test/beast/websocket/accept.cpp
+--- a/libs/beast/test/beast/websocket/accept.cpp 2020-04-22 09:34:50.000000000 -0400
++++ b/libs/beast/test/beast/websocket/accept.cpp 2020-05-02 13:51:02.473315924 -0400
+@@ -14,7 +14,9 @@
+ #include <boost/beast/_experimental/test/tcp.hpp>
+ #include <boost/beast/_experimental/unit_test/suite.hpp>
+ #include "test.hpp"
+-
++#if BOOST_ASIO_HAS_CO_AWAIT
++#include <boost/asio/use_awaitable.hpp>
++#endif
+ namespace boost {
+ namespace beast {
+ namespace websocket {
+@@ -810,6 +812,27 @@
+ }
+ }
+
++#if BOOST_ASIO_HAS_CO_AWAIT
++ void testAwaitableCompiles(
++ stream<net::ip::tcp::socket>& s,
++ http::request<http::empty_body>& req,
++ net::mutable_buffer buf
++ )
++ {
++ static_assert(std::is_same_v<
++ net::awaitable<void>, decltype(
++ s.async_accept(net::use_awaitable))>);
++
++ static_assert(std::is_same_v<
++ net::awaitable<void>, decltype(
++ s.async_accept(req, net::use_awaitable))>);
++
++ static_assert(std::is_same_v<
++ net::awaitable<void>, decltype(
++ s.async_accept(buf, net::use_awaitable))>);
++ }
++#endif
++
+ void
+ run() override
+ {
+@@ -820,6 +843,9 @@
+ testInvalidInputs();
+ testEndOfStream();
+ testAsync();
++#if BOOST_ASIO_HAS_CO_AWAIT
++ boost::ignore_unused(&accept_test::testAwaitableCompiles);
++#endif
+ }
+ };
+
+diff -aruN a/libs/beast/test/beast/websocket/close.cpp b/libs/beast/test/beast/websocket/close.cpp
+--- a/libs/beast/test/beast/websocket/close.cpp 2020-04-22 09:34:50.000000000 -0400
++++ b/libs/beast/test/beast/websocket/close.cpp 2020-05-02 13:51:02.473315924 -0400
+@@ -16,6 +16,9 @@
+
+ #include <boost/asio/io_context.hpp>
+ #include <boost/asio/strand.hpp>
++#if BOOST_ASIO_HAS_CO_AWAIT
++#include <boost/asio/use_awaitable.hpp>
++#endif
+
+ namespace boost {
+ namespace beast {
+@@ -735,6 +738,15 @@
+ }
+ };
+
++#if BOOST_ASIO_HAS_CO_AWAIT
++ void testAwaitableCompiles(stream<test::stream>& s, close_reason cr )
++ {
++ static_assert(std::is_same_v<
++ net::awaitable<void>, decltype(
++ s.async_close(cr, net::use_awaitable))>);
++ }
++#endif
++
+ void
+ run() override
+ {
+@@ -742,6 +754,9 @@
+ testTimeout();
+ testSuspend();
+ testMoveOnly();
++#if BOOST_ASIO_HAS_CO_AWAIT
++ boost::ignore_unused(&close_test::testAwaitableCompiles);
++#endif
+ }
+ };
+
+diff -aruN a/libs/beast/test/beast/websocket/handshake.cpp b/libs/beast/test/beast/websocket/handshake.cpp
+--- a/libs/beast/test/beast/websocket/handshake.cpp 2020-04-22 09:34:50.000000000 -0400
++++ b/libs/beast/test/beast/websocket/handshake.cpp 2020-05-02 13:51:02.473315924 -0400
+@@ -18,6 +18,9 @@
+ #include <boost/asio/io_context.hpp>
+ #include <boost/asio/strand.hpp>
+ #include <thread>
++#if BOOST_ASIO_HAS_CO_AWAIT
++#include <boost/asio/use_awaitable.hpp>
++#endif
+
+ namespace boost {
+ namespace beast {
+@@ -704,6 +707,23 @@
+ }
+ }
+
++#if BOOST_ASIO_HAS_CO_AWAIT
++ void testAwaitableCompiles(
++ stream<test::stream>& s,
++ std::string host,
++ std::string port,
++ response_type& resp)
++ {
++ static_assert(std::is_same_v<
++ net::awaitable<void>, decltype(
++ s.async_handshake(host, port, net::use_awaitable))>);
++
++ static_assert(std::is_same_v<
++ net::awaitable<void>, decltype(
++ s.async_handshake(resp, host, port, net::use_awaitable))>);
++ }
++#endif
++
+ void
+ run() override
+ {
+@@ -714,6 +734,9 @@
+ testMoveOnly();
+ testAsync();
+ testIssue1460();
++#if BOOST_ASIO_HAS_CO_AWAIT
++ boost::ignore_unused(&handshake_test::testAwaitableCompiles);
++#endif
+ }
+ };
+
+diff -aruN a/libs/beast/test/beast/websocket/ping.cpp b/libs/beast/test/beast/websocket/ping.cpp
+--- a/libs/beast/test/beast/websocket/ping.cpp 2020-04-22 09:34:50.000000000 -0400
++++ b/libs/beast/test/beast/websocket/ping.cpp 2020-05-02 13:51:02.474315935 -0400
+@@ -18,6 +18,10 @@
+ #include <boost/asio/io_context.hpp>
+ #include <boost/asio/strand.hpp>
+
++#if BOOST_ASIO_HAS_CO_AWAIT
++#include <boost/asio/use_awaitable.hpp>
++#endif
++
+ namespace boost {
+ namespace beast {
+ namespace websocket {
+@@ -483,12 +487,30 @@
+ }
+ };
+
++#if BOOST_ASIO_HAS_CO_AWAIT
++ void testAwaitableCompiles(
++ stream<test::stream>& s,
++ ping_data& pdat)
++ {
++ static_assert(std::is_same_v<
++ net::awaitable<void>, decltype(
++ s.async_ping(pdat, net::use_awaitable))>);
++
++ static_assert(std::is_same_v<
++ net::awaitable<void>, decltype(
++ s.async_pong(pdat, net::use_awaitable))>);
++ }
++#endif
++
+ void
+ run() override
+ {
+ testPing();
+ testSuspend();
+ testMoveOnly();
++#if BOOST_ASIO_HAS_CO_AWAIT
++ boost::ignore_unused(&ping_test::testAwaitableCompiles);
++#endif
+ }
+ };
+
+diff -aruN a/libs/beast/test/beast/websocket/read2.cpp b/libs/beast/test/beast/websocket/read2.cpp
+--- a/libs/beast/test/beast/websocket/read2.cpp 2020-04-22 09:34:50.000000000 -0400
++++ b/libs/beast/test/beast/websocket/read2.cpp 2020-05-02 13:51:02.474315935 -0400
+@@ -14,6 +14,10 @@
+
+ #include <boost/asio/write.hpp>
+
++#if BOOST_ASIO_HAS_CO_AWAIT
++#include <boost/asio/use_awaitable.hpp>
++#endif
++
+ #include <boost/config/workaround.hpp>
+ #if BOOST_WORKAROUND(BOOST_GCC, < 80200)
+ #define BOOST_BEAST_SYMBOL_HIDDEN __attribute__ ((visibility("hidden")))
+@@ -673,10 +677,34 @@
+ }
+ }
+
++#if BOOST_ASIO_HAS_CO_AWAIT
++ void testAwaitableCompiles(
++ stream<test::stream>& s,
++ flat_buffer& dynbuf,
++ net::mutable_buffer buf,
++ std::size_t limit)
++ {
++ static_assert(std::is_same_v<
++ net::awaitable<std::size_t>, decltype(
++ s.async_read(dynbuf, net::use_awaitable))>);
++
++ static_assert(std::is_same_v<
++ net::awaitable<std::size_t>, decltype(
++ s.async_read_some(buf, net::use_awaitable))>);
++
++ static_assert(std::is_same_v<
++ net::awaitable<std::size_t>, decltype(
++ s.async_read_some(dynbuf, limit, net::use_awaitable))>);
++ }
++#endif
++
+ void
+ run() override
+ {
+ testRead();
++#if BOOST_ASIO_HAS_CO_AWAIT
++ boost::ignore_unused(&read2_test::testAwaitableCompiles);
++#endif
+ }
+ };
+
+diff -aruN a/libs/beast/test/beast/websocket/write.cpp b/libs/beast/test/beast/websocket/write.cpp
+--- a/libs/beast/test/beast/websocket/write.cpp 2020-04-22 09:34:50.000000000 -0400
++++ b/libs/beast/test/beast/websocket/write.cpp 2020-05-02 13:51:02.474315935 -0400
+@@ -13,6 +13,10 @@
+ #include <boost/asio/io_context.hpp>
+ #include <boost/asio/strand.hpp>
+
++#if BOOST_ASIO_HAS_CO_AWAIT
++#include <boost/asio/use_awaitable.hpp>
++#endif
++
+ #include "test.hpp"
+
+ namespace boost {
+@@ -716,6 +720,22 @@
+ BEAST_EXPECT(n1 < n0 + s.size());
+ }
+
++#if BOOST_ASIO_HAS_CO_AWAIT
++ void testAwaitableCompiles(
++ stream<test::stream>& s,
++ net::mutable_buffer buf,
++ bool fin)
++ {
++ static_assert(std::is_same_v<
++ net::awaitable<std::size_t>, decltype(
++ s.async_write(buf, net::use_awaitable))>);
++
++ static_assert(std::is_same_v<
++ net::awaitable<std::size_t>, decltype(
++ s.async_write_some(fin, buf, net::use_awaitable))>);
++ }
++#endif
++
+ void
+ run() override
+ {
+@@ -726,6 +746,9 @@
+ testMoveOnly();
+ testIssue300();
+ testIssue1666();
++#if BOOST_ASIO_HAS_CO_AWAIT
++ boost::ignore_unused(&write_test::testAwaitableCompiles);
++#endif
+ }
+ };
+
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