[libmicrohttpd] external event loop mode without using select?

[Greg Stark]

I have an existing event loop and other events I need to handle so I
was planning to use external select mode. However I'm surprised that
MHD_get_fdset is the only way to get the set of file descriptors.

It seems pointless to have MHD loop over its file descriptors
constructing an fdset and then I have to loop over the fdset to pick
out the file descriptors to add them to the event loop handler (which
preferentially uses epoll, kqueue, or poll).

I'm not expecting a large pool of web connections, in fact I would
rarely have more than one concurrent connection however there are a
lot of file descriptors used elsewhere in the application so the
maximum fd number might actually be large. fd_sets are a particularly
impractical api for this.

-- 
greg