Do not use deprecated interfaces

[ClausKlein]

with this define I can't compile the project:

add_definitions(-DBOOST_ASIO_NO_DEPRECATED=1)

Claus-iMac:.build-src-Debug clausklein$ ninja -j 1 -v
[1/12] /usr/local/bin/ccache /usr/bin/c++  -DBOOST_ALL_NO_LIB -DBOOST_ASIO_NO_DEPRECATED=1 -DBOOST_ASIO_SEPARATE_COMPILATION=1 -DBOOST_BEAST_SEPARATE_COMPILATION=1 -DBOOST_SYSTEM_DYN_LINK -DBOOST_THREAD_DYN_LINK -I/Users/clausklein/Workspace/cpp/BeastHttp/BeastHttp/src/../include -isystem /usr/local/Cellar/boost/1.72.0_2/include -isystem /usr/local/opt/openssl/include -isystem /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1 -isystem /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/clang/11.0.3/include -isystem /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.15.sdk/usr/include -isystem /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include -std=c++17 -Wall -Wextra -Wpedantic -g -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.15.sdk   -Wall -Wextra -Wpedantic -Wno-unknown-warning-option "-Wno-#pragma-messages" -Wno-deprecated-declarations -Wno-unused-parameter -Wno-unused-variable -std=c++17 -MD -MT examples/reactor_flex/CMakeFiles/reactor_flex.dir/main.o -MF examples/reactor_flex/CMakeFiles/reactor_flex.dir/main.d -o examples/reactor_flex/CMakeFiles/reactor_flex.dir/main.o -c /Users/clausklein/Workspace/cpp/BeastHttp/BeastHttp/src/examples/reactor_flex/main.cxx
FAILED: examples/reactor_flex/CMakeFiles/reactor_flex.dir/main.o 
/usr/local/bin/ccache /usr/bin/c++  -DBOOST_ALL_NO_LIB -DBOOST_ASIO_NO_DEPRECATED=1 -DBOOST_ASIO_SEPARATE_COMPILATION=1 -DBOOST_BEAST_SEPARATE_COMPILATION=1 -DBOOST_SYSTEM_DYN_LINK -DBOOST_THREAD_DYN_LINK -I/Users/clausklein/Workspace/cpp/BeastHttp/BeastHttp/src/../include -isystem /usr/local/Cellar/boost/1.72.0_2/include -isystem /usr/local/opt/openssl/include -isystem /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1 -isystem /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/clang/11.0.3/include -isystem /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.15.sdk/usr/include -isystem /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include -std=c++17 -Wall -Wextra -Wpedantic -g -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.15.sdk   -Wall -Wextra -Wpedantic -Wno-unknown-warning-option "-Wno-#pragma-messages" -Wno-deprecated-declarations -Wno-unused-parameter -Wno-unused-variable -std=c++17 -MD -MT examples/reactor_flex/CMakeFiles/reactor_flex.dir/main.o -MF examples/reactor_flex/CMakeFiles/reactor_flex.dir/main.d -o examples/reactor_flex/CMakeFiles/reactor_flex.dir/main.o -c /Users/clausklein/Workspace/cpp/BeastHttp/BeastHttp/src/examples/reactor_flex/main.cxx

# ...

/Users/clausklein/Workspace/cpp/BeastHttp/BeastHttp/src/../include/http/reactor/ssl/session.hxx:56:71: warning: token pasting of ',' and __VA_ARGS__ is a GNU extension [-Wgnu-zero-variadic-macro-arguments]
In file included from /Users/clausklein/Workspace/cpp/BeastHttp/BeastHttp/src/examples/reactor_flex/main.cxx:2:
In file included from /Users/clausklein/Workspace/cpp/BeastHttp/BeastHttp/src/../include/http/reactor/session.hxx:11:
In file included from /Users/clausklein/Workspace/cpp/BeastHttp/BeastHttp/src/../include/http/base/timer.hxx:58:
/Users/clausklein/Workspace/cpp/BeastHttp/BeastHttp/src/../include/http/base/impl/timer.hxx:59:19: error: too many arguments to function call, expected 0, have 1
    timer_.cancel(ec);
    ~~~~~~~~~~~~~ ^~
/Users/clausklein/Workspace/cpp/BeastHttp/BeastHttp/src/../include/http/common/impl/detect.hxx:300:22: note: in instantiation of member function '_0xdead4ead::http::base::timer<boost::asio::basic_waitable_timer<std::__1::chrono::steady_clock, boost::asio::wait_traits<std::__1::chrono::steady_clock>, boost::asio::executor>, boost::asio::strand<boost::asio::executor> >::cancel' requested here
    auto ec = timer_.cancel();
                     ^
/Users/clausklein/Workspace/cpp/BeastHttp/BeastHttp/src/../include/http/common/impl/detect.hxx:197:9: note: in instantiation of member function '_0xdead4ead::http::common::detect<boost::beast::basic_flat_buffer<std::__1::allocator<char> >, boost::asio::ip::tcp, boost::asio::basic_stream_socket<boost::asio::ip::tcp, boost::asio::executor>, std::__1::chrono::steady_clock, boost::asio::basic_waitable_timer<std::__1::chrono::steady_clock, boost::asio::wait_traits<std::__1::chrono::steady_clock>, boost::asio::executor>, std::function, std::function, std::function>::do_timer_cancel' requested here
        do_timer_cancel();
        ^
/Users/clausklein/Workspace/cpp/BeastHttp/BeastHttp/src/../include/http/common/impl/detect.hxx:35:92: note: in instantiation of member function '_0xdead4ead::http::common::detect<boost::beast::basic_flat_buffer<std::__1::allocator<char> >, boost::asio::ip::tcp, boost::asio::basic_stream_socket<boost::asio::ip::tcp, boost::asio::executor>, std::__1::chrono::steady_clock, boost::asio::basic_waitable_timer<std::__1::chrono::steady_clock, boost::asio::wait_traits<std::__1::chrono::steady_clock>, boost::asio::executor>, std::function, std::function, std::function>::do_async' requested here
    std::make_shared<self_type>(std::move(socket), std::forward<_OnAction>(on_action)...)->do_async();
                                                                                           ^
/Users/clausklein/Workspace/cpp/BeastHttp/BeastHttp/src/examples/reactor_flex/main.cxx:201:21: note: in instantiation of function template specialization '_0xdead4ead::http::common::detect<boost::beast::basic_flat_buffer<std::__1::allocator<char> >, boost::asio::ip::tcp, boost::asio::basic_stream_socket<boost::asio::ip::tcp, boost::asio::executor>, std::__1::chrono::steady_clock, boost::asio::basic_waitable_timer<std::__1::chrono::steady_clock, boost::asio::wait_traits<std::__1::chrono::steady_clock>, boost::asio::executor>, std::function, std::function, std::function>::async<const (lambda at /Users/clausklein/Workspace/cpp/BeastHttp/BeastHttp/src/examples/reactor_flex/main.cxx:181:28) &, const (lambda at /Users/clausklein/Workspace/cpp/BeastHttp/BeastHttp/src/examples/reactor_flex/main.cxx:171:27) &>' requested here
        ssl_detect::async(std::move(asio_socket), onDetect, onError);
                    ^
/usr/local/Cellar/boost/1.72.0_2/include/boost/asio/basic_waitable_timer.hpp:361:3: note: 'cancel' declared here
  std::size_t cancel()
  ^
18 warnings and 1 error generated.
ninja: build stopped: subcommand failed.
Claus-iMac:.build-src-Debug clausklein$