Fix compilation errors with msvc /std:c++latest

fixes #1916 fixes #1925
2025-08-03 14:54:32 +02:00 · 2020-04-30 13:45:04 +02:00
parent fda558e034
commit 638e2d1244
21 changed files with 55 additions and 54 deletions
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,4 @@
+* 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
--- a/include/boost/beast/_experimental/http/impl/icy_stream.hpp
+++ b/include/boost/beast/_experimental/http/impl/icy_stream.hpp
@@ -259,7 +259,7 @@ read_some(MutableBufferSequence const& buffers, error_code& ec)
 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 @@ write_some(MutableBufferSequence const& buffers, error_code& ec)
 template<class NextLayer>
 template<
    class MutableBufferSequence,
-    class WriteHandler>
+    BOOST_BEAST_ASYNC_TPARAM2 WriteHandler>
 BOOST_BEAST_ASYNC_RESULT2(WriteHandler)
 icy_stream<NextLayer>::
 async_write_some(
--- a/include/boost/beast/_experimental/test/impl/stream.hpp
+++ b/include/boost/beast/_experimental/test/impl/stream.hpp
@@ -306,7 +306,7 @@ read_some(MutableBufferSequence const& buffers,
    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 @@ write_some(
    return n;
 }

-template<class ConstBufferSequence, class WriteHandler>
+template<class ConstBufferSequence, BOOST_BEAST_ASYNC_TPARAM2 WriteHandler>
 BOOST_BEAST_ASYNC_RESULT2(WriteHandler)
 stream::
 async_write_some(
--- a/include/boost/beast/core/detail/impl/read.hpp
+++ b/include/boost/beast/core/detail/impl/read.hpp
@@ -214,7 +214,7 @@ template<
    class AsyncReadStream,
    class DynamicBuffer,
    class CompletionCondition,
-    class ReadHandler,
+    BOOST_BEAST_ASYNC_TPARAM2 ReadHandler,
    class>
 BOOST_BEAST_ASYNC_RESULT2(ReadHandler)
 async_read(
--- a/include/boost/beast/core/detail/read.hpp
+++ b/include/boost/beast/core/detail/read.hpp
@@ -219,7 +219,7 @@ template<
    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 &&
--- a/include/boost/beast/core/impl/basic_stream.hpp
+++ b/include/boost/beast/core/impl/basic_stream.hpp
@@ -776,7 +776,7 @@ close()
 //------------------------------------------------------------------------------

 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 @@ async_connect(
 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 Protocol, class Executor, class RatePolicy>
 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 @@ async_connect(
 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 Protocol, class Executor, class RatePolicy>
 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 @@ async_connect(
 //------------------------------------------------------------------------------

 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 @@ async_read_some(
 }

 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(
--- a/include/boost/beast/core/impl/buffered_read_stream.hpp
+++ b/include/boost/beast/core/impl/buffered_read_stream.hpp
@@ -141,7 +141,7 @@ buffered_read_stream(Args&&... args)
 }

 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(
@@ -212,7 +212,7 @@ read_some(MutableBufferSequence const& buffers,
 }

 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(
--- a/include/boost/beast/core/impl/flat_stream.hpp
+++ b/include/boost/beast/core/impl/flat_stream.hpp
@@ -144,7 +144,7 @@ read_some(MutableBufferSequence const& buffers, error_code& ec)
 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 @@ write_some(ConstBufferSequence const& buffers, error_code& ec)
 template<class NextLayer>
 template<
    class ConstBufferSequence,
-    class WriteHandler>
+    BOOST_BEAST_ASYNC_TPARAM2 WriteHandler>
 BOOST_BEAST_ASYNC_RESULT2(WriteHandler)
 flat_stream<NextLayer>::
 async_write_some(
--- a/include/boost/beast/http/impl/file_body_win32.hpp
+++ b/include/boost/beast/http/impl/file_body_win32.hpp
@@ -597,7 +597,7 @@ write_some(
 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<
--- a/include/boost/beast/http/impl/read.hpp
+++ b/include/boost/beast/http/impl/read.hpp
@@ -304,7 +304,7 @@ template<
    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 @@ template<
    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 @@ template<
    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 @@ template<
    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,
--- a/include/boost/beast/http/impl/write.hpp
+++ b/include/boost/beast/http/impl/write.hpp
@@ -463,7 +463,7 @@ write_some_impl(
 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 @@ write_some(
 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 @@ write_header(
 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 @@ write(
 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 @@ write(
 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 @@ async_write(
 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,
--- a/include/boost/beast/ssl/ssl_stream.hpp
+++ b/include/boost/beast/ssl/ssl_stream.hpp
@@ -555,7 +555,7 @@ public:
        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 @@ public:
        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)
--- a/include/boost/beast/websocket/impl/accept.hpp
+++ b/include/boost/beast/websocket/impl/accept.hpp
@@ -542,7 +542,7 @@ accept(

 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 @@ async_accept(
 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 @@ async_accept_ex(
 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 NextLayer, bool deflateSupported>
 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 @@ async_accept_ex(
 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 NextLayer, bool deflateSupported>
 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(
--- a/include/boost/beast/websocket/impl/close.hpp
+++ b/include/boost/beast/websocket/impl/close.hpp
@@ -382,7 +382,7 @@ close(close_reason const& cr, error_code& ec)
 }

 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)
--- a/include/boost/beast/websocket/impl/handshake.hpp
+++ b/include/boost/beast/websocket/impl/handshake.hpp
@@ -268,7 +268,7 @@ do_handshake(
 //------------------------------------------------------------------------------

 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 @@ async_handshake(
 }

 template<class NextLayer, bool deflateSupported>
-template<class HandshakeHandler>
+template<BOOST_BEAST_ASYNC_TPARAM1 HandshakeHandler>
 BOOST_BEAST_ASYNC_RESULT1(HandshakeHandler)
 stream<NextLayer, deflateSupported>::
 async_handshake(
--- a/include/boost/beast/websocket/impl/ping.hpp
+++ b/include/boost/beast/websocket/impl/ping.hpp
@@ -288,7 +288,7 @@ pong(ping_data const& payload, error_code& ec)
 }

 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 @@ async_ping(ping_data const& payload, WriteHandler&& handler)
 }

 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)
--- a/include/boost/beast/websocket/impl/read.hpp
+++ b/include/boost/beast/websocket/impl/read.hpp
@@ -804,7 +804,7 @@ read(DynamicBuffer& buffer, error_code& ec)
 }

 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 @@ read_some(
 }

 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 @@ loop:
 }

 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(
--- a/include/boost/beast/websocket/impl/write.hpp
+++ b/include/boost/beast/websocket/impl/write.hpp
@@ -700,7 +700,7 @@ write_some(bool fin,
 }

 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 @@ write(ConstBufferSequence const& buffers, error_code& ec)
 }

 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(
--- a/include/boost/beast/websocket/stream.hpp
+++ b/include/boost/beast/websocket/stream.hpp
@@ -2634,7 +2634,7 @@ public:

    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 @@ public:
    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 @@ public:
    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,
--- a/test/beast/core/async_base.cpp
+++ b/test/beast/core/async_base.cpp
@@ -585,7 +585,7 @@ public:
    //--------------------------------------------------------------------------

    // 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)
    {
--- a/test/beast/core/stream_traits.cpp
+++ b/test/beast/core/stream_traits.cpp
@@ -214,14 +214,14 @@ public:
    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 @@ public:
    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&&);
    };