how to implemet POSIX select() based behaviour, within boost::asio

I've already wasted two days reading documentation of boost::asio And I still don't know how I could implement blocking select() like function for several sockets using only one thread (using boost framework). Asynchronous functions of boost::asio return immediately, so there would be a need to put some wait function in main thread until one of the async_read's finishes. I suspect that this would

[yuske711]

boost::asioではioserviceがselectの抽象化

[yysaki]

boost::asioではioserviceがselectの抽象化