from upstream.
"Added compatibility with asio 1.33 and up (#77)
Mostly replaced deprecated 'io_service' with 'io_context'. The
deprecated API was removed with asio 1.33."
Obtained from: Fred Helmesjö
Obtained from: fc323ccece
Failure without this patch was (14.2 poudriere):
[00:01:05] FAILED: fineftp-server/CMakeFiles/server.dir/src/server_impl.cpp.o
[00:01:05] /usr/local/libexec/ccache/c++ -DASIO_DISABLE_VISIBILITY -DASIO_STANDALONE -DDELAY_226_RESP_MS=0 -D_WIN32_WINNT=0x0601 -D__USE_FILE_OFFSET64=1 -Dserver_EXPORTS -I/wrkdirs/usr/ports/ftp/fineftp-server/work/fineftp-server-1.5.0/fineftp-server/include -I/wrkdirs/usr/ports/ftp/fineftp-server/work/.build/fineftp-server/include -I/wrkdirs/usr/ports/ftp/fineftp-server/work/fineftp-server-1.5.0/fineftp-server/src -I/wrkdirs/usr/ports/ftp/fineftp-server/work/fineftp-server-1.5.0/fineftp-server/src/unix -isystem /usr/local/include -O2 -pipe -fstack-protector-strong -fno-strict-aliasing -O2 -pipe -fstack-protector-strong -fno-strict-aliasing -DNDEBUG -fPIC -fvisibility=hidden -fvisibility-inlines-hidden -Wall -Wextra -pthread -MD -MT fineftp-server/CMakeFiles/server.dir/src/server_impl.cpp.o -MF fineftp-server/CMakeFiles/server.dir/src/server_impl.cpp.o.d -o fineftp-server/CMakeFiles/server.dir/src/server_impl.cpp.o -c /wrkdirs/usr/ports/ftp/fineftp-server/work/fineftp-server-1.5.0/fineftp-server/src/server_impl.cpp
[00:01:05] In file included from /wrkdirs/usr/ports/ftp/fineftp-server/work/fineftp-server-1.5.0/fineftp-server/src/server_impl.cpp:1:
[00:01:05] In file included from /wrkdirs/usr/ports/ftp/fineftp-server/work/fineftp-server-1.5.0/fineftp-server/src/server_impl.h:14:
[00:01:05] /wrkdirs/usr/ports/ftp/fineftp-server/work/fineftp-server-1.5.0/fineftp-server/src/ftp_session.h:36:22: error: no type named 'io_service' in namespace 'asio'
[00:01:05] 36 | FtpSession(asio::io_service& io_service, const UserDatabase& user_database, const std::function<void()>& completion_handler, std::ostream& output, std::ostream& error);
[00:01:05] | ~~~~~~^
[00:01:05] /wrkdirs/usr/ports/ftp/fineftp-server/work/fineftp-server-1.5.0/fineftp-server/src/ftp_session.h:185:11: error: no type named 'io_service' in namespace 'asio'
[00:01:05] 185 | asio::io_service& io_service_;
[00:01:05] | ~~~~~~^
[00:01:05] /wrkdirs/usr/ports/ftp/fineftp-server/work/fineftp-server-1.5.0/fineftp-server/src/ftp_session.h:189:11: error: no member named 'io_service' in namespace 'asio'
[00:01:05] 189 | asio::io_service::strand command_strand_;
[00:01:05] | ~~~~~~^
[00:01:05] /wrkdirs/usr/ports/ftp/fineftp-server/work/fineftp-server-1.5.0/fineftp-server/src/ftp_session.h:207:11: error: no member named 'io_service' in namespace 'asio'
[00:01:05] 207 | asio::io_service::strand data_socket_strand_;
[00:01:05] | ~~~~~~^
[00:01:05] In file included from /wrkdirs/usr/ports/ftp/fineftp-server/work/fineftp-server-1.5.0/fineftp-server/src/server_impl.cpp:1:
[00:01:05] /wrkdirs/usr/ports/ftp/fineftp-server/work/fineftp-server-1.5.0/fineftp-server/src/server_impl.h:58:11: error: no type named 'io_service' in namespace 'asio'
[00:01:05] 58 | asio::io_service io_service_;
[00:01:05] | ~~~~~~^
[00:01:05] /wrkdirs/usr/ports/ftp/fineftp-server/work/fineftp-server-1.5.0/fineftp-server/src/server_impl.h:58:30: warning: private field 'io_service_' is not used [-Wunused-private-field]
[00:01:05] 58 | asio::io_service io_service_;
[00:01:05] | ^
[00:01:05] 1 warning and 5 errors generated
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