Oops, brainfart. Sadly it's too late for me to edit that comment. Yes, you can select just fine on pipes. What I was thinking of is that recv and send doesn'

Oops, brainfart. Sadly it's too late for me to edit that comment. Yes, you can select just fine on pipes. What I was thinking of is that recv and send doesn't work on pipes, and asynchronous I/O frameworks typically want to use send/recv rather than write/read because the latter don't have a flags parameter.