Guys, Is it possible to make ASIO keep descriptor in epoll and not remove it automatically after event is fired (and implement or emulate the same behavior for other mechanisms like select, kqueue etc)? My use case is very simple - I am reading data from multicast socket. One read at a time, always reusing the same buffer. The performance is very critical. Another use case is to give ASIO a null buffer and perform sync read yourself when data is available, in that case you can read from tcp/ip sockets as well. I know that libevent supports this but was not able to find out how to do it with Asio. If it is not available, would someone be able to assist in adding this feature? Thank you, Vlad -- *Vlad Lazarenko* *Lazarenko.me <http://lazarenko.me>* vlad@lazarenko.com <vlad@lazarenko.me>