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use super::*;
use futures::task::Context;
use futures::Poll;
use std::fmt::{Debug, Display, Formatter};
use std::pin::Pin;
#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]
pub struct NullSocketAddr;
impl Display for NullSocketAddr {
fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), std::fmt::Error> {
<Self as Debug>::fmt(self, f)
}
}
impl SocketAddrExt for NullSocketAddr {
fn is_multicast(&self) -> bool {
return false;
}
fn port(&self) -> u16 {
0
}
fn conforming_to(&self, _local: Self) -> Option<Self> {
Some(*self)
}
fn addr_to_string(&self) -> String {
"null".to_string()
}
}
impl ToSocketAddrs for NullSocketAddr {
type Iter = std::option::IntoIter<Self::SocketAddr>;
type SocketAddr = Self;
type Error = super::Error;
fn to_socket_addrs(&self) -> Result<Self::Iter, Self::Error> {
Ok(Some(*self).into_iter())
}
}
impl MulticastSocket for NullSocket {
type IpAddr = String;
fn join_multicast<A>(&self, _addr: A) -> Result<(), Self::Error>
where
A: std::convert::Into<Self::IpAddr>,
{
Ok(())
}
fn leave_multicast<A>(&self, _addr: A) -> Result<(), Self::Error>
where
A: std::convert::Into<Self::IpAddr>,
{
Ok(())
}
}
#[derive(Debug)]
pub struct NullSocket;
impl NullSocket {
pub fn new() -> NullSocket {
NullSocket
}
}
impl Unpin for NullSocket {}
impl AsyncDatagramSocket for NullSocket {}
impl DatagramSocketTypes for NullSocket {
type SocketAddr = NullSocketAddr;
type Error = super::Error;
fn local_addr(&self) -> Result<Self::SocketAddr, Self::Error> {
Ok(NullSocketAddr)
}
fn lookup_host(
_host: &str,
_port: u16,
) -> Result<std::vec::IntoIter<Self::SocketAddr>, Self::Error>
where
Self: Sized,
{
Ok(vec![NullSocketAddr].into_iter())
}
}
impl AsyncSendTo for NullSocket {
fn poll_send_to<B>(
self: Pin<&Self>,
_cx: &mut Context<'_>,
buf: &[u8],
_addr: B,
) -> Poll<Result<usize, Self::Error>>
where
B: super::ToSocketAddrs<SocketAddr = Self::SocketAddr, Error = Self::Error>,
{
Poll::Ready(Ok(buf.len()))
}
}
impl AsyncRecvFrom for NullSocket {
fn poll_recv_from(
self: Pin<&Self>,
_cx: &mut Context<'_>,
_buf: &mut [u8],
) -> Poll<Result<(usize, Self::SocketAddr, Option<Self::SocketAddr>), Self::Error>> {
Poll::Pending
}
}