error in recv() with SF_IO_NONBLOCK

[jliegner]

is IPV6_AVAILABLE not set, allways return SOCK_BUSY:

        if (sock_io_mode & (1 << sn)) {
            return SOCK_BUSY;
        }            

       if (recvsize != 0) {
            break;
        }

Please swap the two if blocks.

[aarbourcimeq]

@jliegner
I have encountered the same issue. Here is what I would suggest.

This should only affect SF_IO_NONBLOCK.

- if (sock_io_mode & (1 << sn)) {
+ if ((sock_io_mode & (1 << sn)) && (recvsize == 0)) {