hi, asio removed some previously deprecated facilities, see https://www.boost.org/doc/libs/1_87_0/doc/html/boost_asio/history.html

I found this when I update vcpkg's boost to 1.87, if you want update you can use my patch, https://github.com/microsoft/vcpkg/pull/42678/files#diff-8c050938d3e295d388fcb05fd405b5edf99a1935e1d13390e0c39c3962eddc37