Function nix::sys::socket::sendmsg

pub fn sendmsg<'a>(fd: RawFd,
                   iov: &[IoVec<&'a [u8]>],
                   cmsgs: &[ControlMessage<'a>],
                   flags: MsgFlags,
                   addr: Option<&'a SockAddr>)
                   -> Result<usize>

Send data in scatter-gather vectors to a socket, possibly accompanied by ancillary data. Optionally direct the message at the given address, as with sendto.

Allocates if cmsgs is nonempty.