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nal: emigrate to tls

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occheung 2020-12-18 17:39:24 +08:00
parent 19ea898c31
commit 2e86838a22
1 changed files with 0 additions and 194 deletions
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194
src/nal_tcp_client.rs
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@ -1,194 +0,0 @@
use core::cell::RefCell;
use nb;
use heapless::{consts, Vec};
use stm32h7xx_hal::ethernet;
use smoltcp as net;
use minimq::embedded_nal;
#[derive(Debug)]
pub enum NetworkError {
NoSocket,
ConnectionFailure,
ReadFailure,
WriteFailure,
}
pub struct NetStorage {
pub ip_addrs: [net::wire::IpCidr; 1],
pub neighbor_cache: [Option<(net::wire::IpAddress, net::iface::Neighbor)>; 8],
pub routes_cache: [Option<(net::wire::IpCidr, net::iface::Route)>; 8],
}
pub type NetworkInterface =
net::iface::EthernetInterface<'static, 'static, 'static, ethernet::EthernetDMA<'static>>;
// TODO: The network stack likely needs a time-tracking mechanic here to support
// blocking/nonblocking/timeout based operations.
pub struct NetworkStack<'a, 'b, 'c, 'n> {
network_interface: &'n mut NetworkInterface,
sockets: RefCell<net::socket::SocketSet<'a, 'b, 'c>>,
next_port: RefCell<u16>,
unused_handles: RefCell<Vec<net::socket::SocketHandle, consts::U16>>,
}
impl<'a, 'b, 'c, 'n> NetworkStack<'a, 'b, 'c, 'n> {
pub fn new(
interface: &'n mut NetworkInterface,
sockets: net::socket::SocketSet<'a, 'b, 'c>,
) -> Self {
let mut unused_handles: Vec<net::socket::SocketHandle, consts::U16> = Vec::new();
for socket in sockets.iter() {
unused_handles.push(socket.handle()).unwrap();
}
NetworkStack {
network_interface: interface,
sockets: RefCell::new(sockets),
next_port: RefCell::new(49152),
unused_handles: RefCell::new(unused_handles),
}
}
pub fn update_delay(&mut self, time: u32) -> u32 {
self.network_interface.poll_delay(
&mut self.sockets.borrow_mut(),
net::time::Instant::from_millis(time as i64),
).map_or(0, |next_poll_time| next_poll_time.total_millis() as u32)
}
pub fn update(&mut self, time: u32) -> bool {
self.network_interface.poll(
&mut self.sockets.borrow_mut(),
net::time::Instant::from_millis(time as i64),
).map_or(true, |changed| changed == false)
}
fn get_ephemeral_port(&self) -> u16 {
// Get the next ephemeral port
let current_port = self.next_port.borrow().clone();
let (next, wrap) = self.next_port.borrow().overflowing_add(1);
*self.next_port.borrow_mut() = if wrap { 49152 } else { next };
return current_port;
}
}
impl<'a, 'b, 'c, 'n> embedded_nal::TcpStack for NetworkStack<'a, 'b, 'c, 'n> {
type TcpSocket = net::socket::SocketHandle;
type Error = NetworkError;
fn open(&self, _mode: embedded_nal::Mode) -> Result<Self::TcpSocket, Self::Error> {
// TODO: Handle mode?
match self.unused_handles.borrow_mut().pop() {
Some(handle) => {
// Abort any active connections on the handle.
let mut sockets = self.sockets.borrow_mut();
let internal_socket: &mut net::socket::TcpSocket = &mut *sockets.get(handle);
internal_socket.abort();
Ok(handle)
}
None => Err(NetworkError::NoSocket),
}
}
fn connect(
&self,
socket: Self::TcpSocket,
remote: embedded_nal::SocketAddr,
) -> Result<Self::TcpSocket, Self::Error> {
// TODO: Handle socket mode?
let mut sockets = self.sockets.borrow_mut();
let internal_socket: &mut net::socket::TcpSocket = &mut *sockets.get(socket);
// If we're already in the process of connecting, ignore the request silently.
if internal_socket.is_open() {
return Ok(socket);
}
match remote.ip() {
embedded_nal::IpAddr::V4(addr) => {
let address = {
let octets = addr.octets();
net::wire::Ipv4Address::new(octets[0], octets[1], octets[2], octets[3])
};
internal_socket
.connect((address, remote.port()), self.get_ephemeral_port())
.map_err(|_| NetworkError::ConnectionFailure)?;
internal_socket
.set_keep_alive(Some(net::time::Duration::from_millis(1000)));
}
embedded_nal::IpAddr::V6(addr) => {
let address = {
let octets = addr.segments();
net::wire::Ipv6Address::new(
octets[0], octets[1], octets[2], octets[3], octets[4], octets[5],
octets[6], octets[7],
)
};
internal_socket
.connect((address, remote.port()), self.get_ephemeral_port())
.map_err(|_| NetworkError::ConnectionFailure)?;
internal_socket
.set_keep_alive(Some(net::time::Duration::from_millis(1000)));
}
};
Ok(socket)
}
fn is_connected(&self, socket: &Self::TcpSocket) -> Result<bool, Self::Error> {
let mut sockets = self.sockets.borrow_mut();
let socket: &mut net::socket::TcpSocket = &mut *sockets.get(*socket);
Ok(socket.may_send() && socket.may_recv())
}
fn write(&self, socket: &mut Self::TcpSocket, buffer: &[u8]) -> nb::Result<usize, Self::Error> {
// TODO: Handle the socket mode.
let mut sockets = self.sockets.borrow_mut();
let socket: &mut net::socket::TcpSocket = &mut *sockets.get(*socket);
let result = socket.send_slice(buffer);
match result {
Ok(num_bytes) => Ok(num_bytes),
Err(_) => Err(nb::Error::Other(NetworkError::WriteFailure)),
}
}
fn read(
&self,
socket: &mut Self::TcpSocket,
buffer: &mut [u8],
) -> nb::Result<usize, Self::Error> {
// TODO: Handle the socket mode.
let mut sockets = self.sockets.borrow_mut();
let socket: &mut net::socket::TcpSocket = &mut *sockets.get(*socket);
let result = socket.recv_slice(buffer);
match result {
Ok(num_bytes) => Ok(num_bytes),
Err(_) => Err(nb::Error::Other(NetworkError::ReadFailure)),
}
}
fn close(&self, socket: Self::TcpSocket) -> Result<(), Self::Error> {
// TODO: Free the ephemeral port in use by the socket.
let mut sockets = self.sockets.borrow_mut();
let internal_socket: &mut net::socket::TcpSocket = &mut *sockets.get(socket);
internal_socket.close();
self.unused_handles.borrow_mut().push(socket).unwrap();
Ok(())
}
}