Move-construct a basic_socket_acceptor
from an acceptor of another protocol type.
template< typename Protocol1> basic_socket_acceptor( basic_socket_acceptor< Protocol1 > && other, typename enable_if< is_convertible< Protocol1, Protocol >::value >::type * = 0);
This constructor moves an acceptor from one object to another.
The other basic_socket_acceptor
object from which the move will occur.
Following the move, the moved-from object is in the same state as if
constructed using the basic_socket(io_context&) constructor
.