Function nix::sys::socket::recvmsg

pub fn recvmsg<'a, T>(
    fd: RawFd, 
    iov: &[IoVec<&mut [u8]>], 
    cmsg_buffer: Option<&'a mut CmsgSpace<T>>, 
    flags: MsgFlags
) -> Result<RecvMsg<'a>>

Receive message in scatter-gather vectors from a socket, and optionally receive ancillary data into the provided buffer. If no ancillary data is desired, use () as the type parameter.