Merge pull request #771 from embassy-rs/net-split

net: add split() to tcpsocket

embassy-net/Cargo.toml

@@ -31,15 +31,13 @@ pool-32 = []
 pool-64 = []
 pool-128 = []
 
-nightly = ["embedded-io/async"]
-
 [dependencies]
 
 defmt = { version = "0.3", optional = true }
 log = { version = "0.4.14", optional = true }
 
 embassy             = { version = "0.1.0", path = "../embassy" }
-embedded-io = "0.3.0"
+embedded-io         = { version = "0.3.0", features = [ "async" ] }
 
 managed             = { version = "0.8.0", default-features = false, features = [ "map" ] }
 heapless            = { version = "0.7.5", default-features = false }

embassy-net/src/lib.rs

@@ -1,9 +1,6 @@
 #![cfg_attr(not(feature = "std"), no_std)]
 #![allow(clippy::new_without_default)]
-#![cfg_attr(
-    feature = "nightly",
-    feature(generic_associated_types, type_alias_impl_trait)
-)]
+#![feature(generic_associated_types, type_alias_impl_trait)]
 
 // This mod MUST go first, so that the others see its macros.
 pub(crate) mod fmt;

embassy-net/src/tcp.rs

@@ -0,0 +1,353 @@
+use core::future::Future;
+use core::marker::PhantomData;
+use core::mem;
+use core::task::Poll;
+use futures::future::poll_fn;
+use smoltcp::iface::{Context as SmolContext, SocketHandle};
+use smoltcp::socket::TcpSocket as SyncTcpSocket;
+use smoltcp::socket::{TcpSocketBuffer, TcpState};
+use smoltcp::time::Duration;
+use smoltcp::wire::IpEndpoint;
+
+use super::stack::Stack;
+
+#[derive(PartialEq, Eq, Clone, Copy, Debug)]
+#[cfg_attr(feature = "defmt", derive(defmt::Format))]
+pub enum Error {
+    ConnectionReset,
+}
+
+#[derive(PartialEq, Eq, Clone, Copy, Debug)]
+#[cfg_attr(feature = "defmt", derive(defmt::Format))]
+pub enum ConnectError {
+    /// The socket is already connected or listening.
+    InvalidState,
+    /// The remote host rejected the connection with a RST packet.
+    ConnectionReset,
+    /// Connect timed out.
+    TimedOut,
+    /// No route to host.
+    NoRoute,
+}
+
+#[derive(PartialEq, Eq, Clone, Copy, Debug)]
+#[cfg_attr(feature = "defmt", derive(defmt::Format))]
+pub enum AcceptError {
+    /// The socket is already connected or listening.
+    InvalidState,
+    /// Invalid listen port
+    InvalidPort,
+    /// The remote host rejected the connection with a RST packet.
+    ConnectionReset,
+}
+
+pub struct TcpSocket<'a> {
+    handle: SocketHandle,
+    ghost: PhantomData<&'a mut [u8]>,
+}
+
+impl<'a> Unpin for TcpSocket<'a> {}
+
+pub struct TcpReader<'a> {
+    handle: SocketHandle,
+    ghost: PhantomData<&'a mut [u8]>,
+}
+
+impl<'a> Unpin for TcpReader<'a> {}
+
+pub struct TcpWriter<'a> {
+    handle: SocketHandle,
+    ghost: PhantomData<&'a mut [u8]>,
+}
+
+impl<'a> Unpin for TcpWriter<'a> {}
+
+impl<'a> TcpSocket<'a> {
+    pub fn new(rx_buffer: &'a mut [u8], tx_buffer: &'a mut [u8]) -> Self {
+        let handle = Stack::with(|stack| {
+            let rx_buffer: &'static mut [u8] = unsafe { mem::transmute(rx_buffer) };
+            let tx_buffer: &'static mut [u8] = unsafe { mem::transmute(tx_buffer) };
+            stack.iface.add_socket(SyncTcpSocket::new(
+                TcpSocketBuffer::new(rx_buffer),
+                TcpSocketBuffer::new(tx_buffer),
+            ))
+        });
+
+        Self {
+            handle,
+            ghost: PhantomData,
+        }
+    }
+
+    pub fn split(&mut self) -> (TcpReader<'_>, TcpWriter<'_>) {
+        (
+            TcpReader {
+                handle: self.handle,
+                ghost: PhantomData,
+            },
+            TcpWriter {
+                handle: self.handle,
+                ghost: PhantomData,
+            },
+        )
+    }
+
+    pub async fn connect<T>(&mut self, remote_endpoint: T) -> Result<(), ConnectError>
+    where
+        T: Into<IpEndpoint>,
+    {
+        let local_port = Stack::with(|stack| stack.get_local_port());
+        match with_socket(self.handle, |s, cx| {
+            s.connect(cx, remote_endpoint, local_port)
+        }) {
+            Ok(()) => {}
+            Err(smoltcp::Error::Illegal) => return Err(ConnectError::InvalidState),
+            Err(smoltcp::Error::Unaddressable) => return Err(ConnectError::NoRoute),
+            // smoltcp returns no errors other than the above.
+            Err(_) => unreachable!(),
+        }
+
+        futures::future::poll_fn(|cx| {
+            with_socket(self.handle, |s, _| match s.state() {
+                TcpState::Closed | TcpState::TimeWait => {
+                    Poll::Ready(Err(ConnectError::ConnectionReset))
+                }
+                TcpState::Listen => unreachable!(),
+                TcpState::SynSent | TcpState::SynReceived => {
+                    s.register_send_waker(cx.waker());
+                    Poll::Pending
+                }
+                _ => Poll::Ready(Ok(())),
+            })
+        })
+        .await
+    }
+
+    pub async fn accept<T>(&mut self, local_endpoint: T) -> Result<(), AcceptError>
+    where
+        T: Into<IpEndpoint>,
+    {
+        match with_socket(self.handle, |s, _| s.listen(local_endpoint)) {
+            Ok(()) => {}
+            Err(smoltcp::Error::Illegal) => return Err(AcceptError::InvalidState),
+            Err(smoltcp::Error::Unaddressable) => return Err(AcceptError::InvalidPort),
+            // smoltcp returns no errors other than the above.
+            Err(_) => unreachable!(),
+        }
+
+        futures::future::poll_fn(|cx| {
+            with_socket(self.handle, |s, _| match s.state() {
+                TcpState::Listen | TcpState::SynSent | TcpState::SynReceived => {
+                    s.register_send_waker(cx.waker());
+                    Poll::Pending
+                }
+                _ => Poll::Ready(Ok(())),
+            })
+        })
+        .await
+    }
+
+    pub fn set_timeout(&mut self, duration: Option<Duration>) {
+        with_socket(self.handle, |s, _| s.set_timeout(duration))
+    }
+
+    pub fn set_keep_alive(&mut self, interval: Option<Duration>) {
+        with_socket(self.handle, |s, _| s.set_keep_alive(interval))
+    }
+
+    pub fn set_hop_limit(&mut self, hop_limit: Option<u8>) {
+        with_socket(self.handle, |s, _| s.set_hop_limit(hop_limit))
+    }
+
+    pub fn local_endpoint(&self) -> IpEndpoint {
+        with_socket(self.handle, |s, _| s.local_endpoint())
+    }
+
+    pub fn remote_endpoint(&self) -> IpEndpoint {
+        with_socket(self.handle, |s, _| s.remote_endpoint())
+    }
+
+    pub fn state(&self) -> TcpState {
+        with_socket(self.handle, |s, _| s.state())
+    }
+
+    pub fn close(&mut self) {
+        with_socket(self.handle, |s, _| s.close())
+    }
+
+    pub fn abort(&mut self) {
+        with_socket(self.handle, |s, _| s.abort())
+    }
+
+    pub fn may_send(&self) -> bool {
+        with_socket(self.handle, |s, _| s.may_send())
+    }
+
+    pub fn may_recv(&self) -> bool {
+        with_socket(self.handle, |s, _| s.may_recv())
+    }
+}
+
+fn with_socket<R>(
+    handle: SocketHandle,
+    f: impl FnOnce(&mut SyncTcpSocket, &mut SmolContext) -> R,
+) -> R {
+    Stack::with(|stack| {
+        let res = {
+            let (s, cx) = stack.iface.get_socket_and_context::<SyncTcpSocket>(handle);
+            f(s, cx)
+        };
+        stack.wake();
+        res
+    })
+}
+
+impl<'a> Drop for TcpSocket<'a> {
+    fn drop(&mut self) {
+        Stack::with(|stack| {
+            stack.iface.remove_socket(self.handle);
+        })
+    }
+}
+
+impl embedded_io::Error for Error {
+    fn kind(&self) -> embedded_io::ErrorKind {
+        embedded_io::ErrorKind::Other
+    }
+}
+
+impl<'d> embedded_io::Io for TcpSocket<'d> {
+    type Error = Error;
+}
+
+impl<'d> embedded_io::asynch::Read for TcpSocket<'d> {
+    type ReadFuture<'a> = impl Future<Output = Result<usize, Self::Error>>
+    where
+        Self: 'a;
+
+    fn read<'a>(&'a mut self, buf: &'a mut [u8]) -> Self::ReadFuture<'a> {
+        poll_fn(move |cx| {
+            // CAUTION: smoltcp semantics around EOF are different to what you'd expect
+            // from posix-like IO, so we have to tweak things here.
+            with_socket(self.handle, |s, _| match s.recv_slice(buf) {
+                // No data ready
+                Ok(0) => {
+                    s.register_recv_waker(cx.waker());
+                    Poll::Pending
+                }
+                // Data ready!
+                Ok(n) => Poll::Ready(Ok(n)),
+                // EOF
+                Err(smoltcp::Error::Finished) => Poll::Ready(Ok(0)),
+                // Connection reset. TODO: this can also be timeouts etc, investigate.
+                Err(smoltcp::Error::Illegal) => Poll::Ready(Err(Error::ConnectionReset)),
+                // smoltcp returns no errors other than the above.
+                Err(_) => unreachable!(),
+            })
+        })
+    }
+}
+
+impl<'d> embedded_io::asynch::Write for TcpSocket<'d> {
+    type WriteFuture<'a> = impl Future<Output = Result<usize, Self::Error>>
+    where
+        Self: 'a;
+
+    fn write<'a>(&'a mut self, buf: &'a [u8]) -> Self::WriteFuture<'a> {
+        poll_fn(move |cx| {
+            with_socket(self.handle, |s, _| match s.send_slice(buf) {
+                // Not ready to send (no space in the tx buffer)
+                Ok(0) => {
+                    s.register_send_waker(cx.waker());
+                    Poll::Pending
+                }
+                // Some data sent
+                Ok(n) => Poll::Ready(Ok(n)),
+                // Connection reset. TODO: this can also be timeouts etc, investigate.
+                Err(smoltcp::Error::Illegal) => Poll::Ready(Err(Error::ConnectionReset)),
+                // smoltcp returns no errors other than the above.
+                Err(_) => unreachable!(),
+            })
+        })
+    }
+
+    type FlushFuture<'a> = impl Future<Output = Result<(), Self::Error>>
+    where
+        Self: 'a;
+
+    fn flush<'a>(&'a mut self) -> Self::FlushFuture<'a> {
+        poll_fn(move |_| {
+            Poll::Ready(Ok(())) // TODO: Is there a better implementation for this?
+        })
+    }
+}
+
+impl<'d> embedded_io::Io for TcpReader<'d> {
+    type Error = Error;
+}
+
+impl<'d> embedded_io::asynch::Read for TcpReader<'d> {
+    type ReadFuture<'a> = impl Future<Output = Result<usize, Self::Error>>
+    where
+        Self: 'a;
+
+    fn read<'a>(&'a mut self, buf: &'a mut [u8]) -> Self::ReadFuture<'a> {
+        poll_fn(move |cx| {
+            // CAUTION: smoltcp semantics around EOF are different to what you'd expect
+            // from posix-like IO, so we have to tweak things here.
+            with_socket(self.handle, |s, _| match s.recv_slice(buf) {
+                // No data ready
+                Ok(0) => {
+                    s.register_recv_waker(cx.waker());
+                    Poll::Pending
+                }
+                // Data ready!
+                Ok(n) => Poll::Ready(Ok(n)),
+                // EOF
+                Err(smoltcp::Error::Finished) => Poll::Ready(Ok(0)),
+                // Connection reset. TODO: this can also be timeouts etc, investigate.
+                Err(smoltcp::Error::Illegal) => Poll::Ready(Err(Error::ConnectionReset)),
+                // smoltcp returns no errors other than the above.
+                Err(_) => unreachable!(),
+            })
+        })
+    }
+}
+
+impl<'d> embedded_io::Io for TcpWriter<'d> {
+    type Error = Error;
+}
+
+impl<'d> embedded_io::asynch::Write for TcpWriter<'d> {
+    type WriteFuture<'a> = impl Future<Output = Result<usize, Self::Error>>
+    where
+        Self: 'a;
+
+    fn write<'a>(&'a mut self, buf: &'a [u8]) -> Self::WriteFuture<'a> {
+        poll_fn(move |cx| {
+            with_socket(self.handle, |s, _| match s.send_slice(buf) {
+                // Not ready to send (no space in the tx buffer)
+                Ok(0) => {
+                    s.register_send_waker(cx.waker());
+                    Poll::Pending
+                }
+                // Some data sent
+                Ok(n) => Poll::Ready(Ok(n)),
+                // Connection reset. TODO: this can also be timeouts etc, investigate.
+                Err(smoltcp::Error::Illegal) => Poll::Ready(Err(Error::ConnectionReset)),
+                // smoltcp returns no errors other than the above.
+                Err(_) => unreachable!(),
+            })
+        })
+    }
+
+    type FlushFuture<'a> = impl Future<Output = Result<(), Self::Error>>
+    where
+        Self: 'a;
+
+    fn flush<'a>(&'a mut self) -> Self::FlushFuture<'a> {
+        poll_fn(move |_| {
+            Poll::Ready(Ok(())) // TODO: Is there a better implementation for this?
+        })
+    }
+}

embassy-net/src/tcp/io_impl.rs

@@ -1,67 +0,0 @@
-use core::future::Future;
-use core::task::Poll;
-use futures::future::poll_fn;
-
-use super::{Error, TcpSocket};
-
-impl<'d> embedded_io::asynch::Read for TcpSocket<'d> {
-    type ReadFuture<'a> = impl Future<Output = Result<usize, Self::Error>>
-    where
-        Self: 'a;
-
-    fn read<'a>(&'a mut self, buf: &'a mut [u8]) -> Self::ReadFuture<'a> {
-        poll_fn(move |cx| {
-            // CAUTION: smoltcp semantics around EOF are different to what you'd expect
-            // from posix-like IO, so we have to tweak things here.
-            self.with(|s, _| match s.recv_slice(buf) {
-                // No data ready
-                Ok(0) => {
-                    s.register_recv_waker(cx.waker());
-                    Poll::Pending
-                }
-                // Data ready!
-                Ok(n) => Poll::Ready(Ok(n)),
-                // EOF
-                Err(smoltcp::Error::Finished) => Poll::Ready(Ok(0)),
-                // Connection reset. TODO: this can also be timeouts etc, investigate.
-                Err(smoltcp::Error::Illegal) => Poll::Ready(Err(Error::ConnectionReset)),
-                // smoltcp returns no errors other than the above.
-                Err(_) => unreachable!(),
-            })
-        })
-    }
-}
-
-impl<'d> embedded_io::asynch::Write for TcpSocket<'d> {
-    type WriteFuture<'a> = impl Future<Output = Result<usize, Self::Error>>
-    where
-        Self: 'a;
-
-    fn write<'a>(&'a mut self, buf: &'a [u8]) -> Self::WriteFuture<'a> {
-        poll_fn(move |cx| {
-            self.with(|s, _| match s.send_slice(buf) {
-                // Not ready to send (no space in the tx buffer)
-                Ok(0) => {
-                    s.register_send_waker(cx.waker());
-                    Poll::Pending
-                }
-                // Some data sent
-                Ok(n) => Poll::Ready(Ok(n)),
-                // Connection reset. TODO: this can also be timeouts etc, investigate.
-                Err(smoltcp::Error::Illegal) => Poll::Ready(Err(Error::ConnectionReset)),
-                // smoltcp returns no errors other than the above.
-                Err(_) => unreachable!(),
-            })
-        })
-    }
-
-    type FlushFuture<'a> = impl Future<Output = Result<(), Self::Error>>
-    where
-        Self: 'a;
-
-    fn flush<'a>(&'a mut self) -> Self::FlushFuture<'a> {
-        poll_fn(move |_| {
-            Poll::Ready(Ok(())) // TODO: Is there a better implementation for this?
-        })
-    }
-}

embassy-net/src/tcp/mod.rs

@@ -1,192 +0,0 @@
-use core::marker::PhantomData;
-use core::mem;
-use core::task::Poll;
-use smoltcp::iface::{Context as SmolContext, SocketHandle};
-use smoltcp::socket::TcpSocket as SyncTcpSocket;
-use smoltcp::socket::{TcpSocketBuffer, TcpState};
-use smoltcp::time::Duration;
-use smoltcp::wire::IpEndpoint;
-
-#[cfg(feature = "nightly")]
-mod io_impl;
-
-use super::stack::Stack;
-
-#[derive(PartialEq, Eq, Clone, Copy, Debug)]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
-pub enum Error {
-    ConnectionReset,
-}
-
-#[derive(PartialEq, Eq, Clone, Copy, Debug)]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
-pub enum ConnectError {
-    /// The socket is already connected or listening.
-    InvalidState,
-    /// The remote host rejected the connection with a RST packet.
-    ConnectionReset,
-    /// Connect timed out.
-    TimedOut,
-    /// No route to host.
-    NoRoute,
-}
-
-#[derive(PartialEq, Eq, Clone, Copy, Debug)]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
-pub enum AcceptError {
-    /// The socket is already connected or listening.
-    InvalidState,
-    /// Invalid listen port
-    InvalidPort,
-    /// The remote host rejected the connection with a RST packet.
-    ConnectionReset,
-}
-
-pub struct TcpSocket<'a> {
-    handle: SocketHandle,
-    ghost: PhantomData<&'a mut [u8]>,
-}
-
-impl<'a> Unpin for TcpSocket<'a> {}
-
-impl<'a> TcpSocket<'a> {
-    pub fn new(rx_buffer: &'a mut [u8], tx_buffer: &'a mut [u8]) -> Self {
-        let handle = Stack::with(|stack| {
-            let rx_buffer: &'static mut [u8] = unsafe { mem::transmute(rx_buffer) };
-            let tx_buffer: &'static mut [u8] = unsafe { mem::transmute(tx_buffer) };
-            stack.iface.add_socket(SyncTcpSocket::new(
-                TcpSocketBuffer::new(rx_buffer),
-                TcpSocketBuffer::new(tx_buffer),
-            ))
-        });
-
-        Self {
-            handle,
-            ghost: PhantomData,
-        }
-    }
-
-    pub async fn connect<T>(&mut self, remote_endpoint: T) -> Result<(), ConnectError>
-    where
-        T: Into<IpEndpoint>,
-    {
-        let local_port = Stack::with(|stack| stack.get_local_port());
-        match self.with(|s, cx| s.connect(cx, remote_endpoint, local_port)) {
-            Ok(()) => {}
-            Err(smoltcp::Error::Illegal) => return Err(ConnectError::InvalidState),
-            Err(smoltcp::Error::Unaddressable) => return Err(ConnectError::NoRoute),
-            // smoltcp returns no errors other than the above.
-            Err(_) => unreachable!(),
-        }
-
-        futures::future::poll_fn(|cx| {
-            self.with(|s, _| match s.state() {
-                TcpState::Closed | TcpState::TimeWait => {
-                    Poll::Ready(Err(ConnectError::ConnectionReset))
-                }
-                TcpState::Listen => unreachable!(),
-                TcpState::SynSent | TcpState::SynReceived => {
-                    s.register_send_waker(cx.waker());
-                    Poll::Pending
-                }
-                _ => Poll::Ready(Ok(())),
-            })
-        })
-        .await
-    }
-
-    pub async fn accept<T>(&mut self, local_endpoint: T) -> Result<(), AcceptError>
-    where
-        T: Into<IpEndpoint>,
-    {
-        match self.with(|s, _| s.listen(local_endpoint)) {
-            Ok(()) => {}
-            Err(smoltcp::Error::Illegal) => return Err(AcceptError::InvalidState),
-            Err(smoltcp::Error::Unaddressable) => return Err(AcceptError::InvalidPort),
-            // smoltcp returns no errors other than the above.
-            Err(_) => unreachable!(),
-        }
-
-        futures::future::poll_fn(|cx| {
-            self.with(|s, _| match s.state() {
-                TcpState::Listen | TcpState::SynSent | TcpState::SynReceived => {
-                    s.register_send_waker(cx.waker());
-                    Poll::Pending
-                }
-                _ => Poll::Ready(Ok(())),
-            })
-        })
-        .await
-    }
-
-    pub fn set_timeout(&mut self, duration: Option<Duration>) {
-        self.with(|s, _| s.set_timeout(duration))
-    }
-
-    pub fn set_keep_alive(&mut self, interval: Option<Duration>) {
-        self.with(|s, _| s.set_keep_alive(interval))
-    }
-
-    pub fn set_hop_limit(&mut self, hop_limit: Option<u8>) {
-        self.with(|s, _| s.set_hop_limit(hop_limit))
-    }
-
-    pub fn local_endpoint(&self) -> IpEndpoint {
-        self.with(|s, _| s.local_endpoint())
-    }
-
-    pub fn remote_endpoint(&self) -> IpEndpoint {
-        self.with(|s, _| s.remote_endpoint())
-    }
-
-    pub fn state(&self) -> TcpState {
-        self.with(|s, _| s.state())
-    }
-
-    pub fn close(&mut self) {
-        self.with(|s, _| s.close())
-    }
-
-    pub fn abort(&mut self) {
-        self.with(|s, _| s.abort())
-    }
-
-    pub fn may_send(&self) -> bool {
-        self.with(|s, _| s.may_send())
-    }
-
-    pub fn may_recv(&self) -> bool {
-        self.with(|s, _| s.may_recv())
-    }
-
-    fn with<R>(&self, f: impl FnOnce(&mut SyncTcpSocket, &mut SmolContext) -> R) -> R {
-        Stack::with(|stack| {
-            let res = {
-                let (s, cx) = stack
-                    .iface
-                    .get_socket_and_context::<SyncTcpSocket>(self.handle);
-                f(s, cx)
-            };
-            stack.wake();
-            res
-        })
-    }
-}
-
-impl<'a> Drop for TcpSocket<'a> {
-    fn drop(&mut self) {
-        Stack::with(|stack| {
-            stack.iface.remove_socket(self.handle);
-        })
-    }
-}
-
-impl embedded_io::Error for Error {
-    fn kind(&self) -> embedded_io::ErrorKind {
-        embedded_io::ErrorKind::Other
-    }
-}
-
-impl<'d> embedded_io::Io for TcpSocket<'d> {
-    type Error = Error;
-}

embassy-stm32/Cargo.toml

@@ -90,7 +90,7 @@ time-driver-tim12 = ["_time-driver"]
 time-driver-tim15 = ["_time-driver"]
 
 # Enable nightly-only features
-nightly = ["embassy/nightly", "embassy-net?/nightly", "embedded-hal-1", "embedded-hal-async", "embedded-storage-async", "dep:embedded-io"]
+nightly = ["embassy/nightly", "embedded-hal-1", "embedded-hal-async", "embedded-storage-async", "dep:embedded-io"]
 
 # Reexport stm32-metapac at `embassy_stm32::pac`.
 # This is unstable because semver-minor (non-breaking) releases of embassy-stm32 may major-bump (breaking) the stm32-metapac version.

examples/nrf/Cargo.toml

@@ -6,12 +6,12 @@ version = "0.1.0"
 
 [features]
 default = ["nightly"]
-nightly = ["embassy-nrf/nightly", "embassy-nrf/unstable-traits", "embassy-usb", "embassy-usb-serial", "embassy-usb-hid", "embassy-usb-ncm", "embedded-io/async", "embassy-net/nightly"]
+nightly = ["embassy-nrf/nightly", "embassy-nrf/unstable-traits", "embassy-usb", "embassy-usb-serial", "embassy-usb-hid", "embassy-usb-ncm", "embedded-io/async", "embassy-net"]
 
 [dependencies]
 embassy = { version = "0.1.0", path = "../../embassy", features = ["defmt", "defmt-timestamp-uptime"] }
 embassy-nrf = { version = "0.1.0", path = "../../embassy-nrf", features = ["defmt", "nrf52840", "time-driver-rtc1", "gpiote", "unstable-pac"] }
-embassy-net = { version = "0.1.0", path = "../../embassy-net", features = ["defmt", "tcp", "dhcpv4", "medium-ethernet", "pool-16"] }
+embassy-net = { version = "0.1.0", path = "../../embassy-net", features = ["defmt", "tcp", "dhcpv4", "medium-ethernet", "pool-16"], optional = true }
 embassy-usb = { version = "0.1.0", path = "../../embassy-usb", features = ["defmt"], optional = true }
 embassy-usb-serial = { version = "0.1.0", path = "../../embassy-usb-serial", features = ["defmt"], optional = true }
 embassy-usb-hid = { version = "0.1.0", path = "../../embassy-usb-hid", features = ["defmt"], optional = true }

examples/std/Cargo.toml

@@ -6,7 +6,7 @@ version = "0.1.0"
 
 [dependencies]
 embassy = { version = "0.1.0", path = "../../embassy", features = ["log", "std", "time", "nightly"] }
-embassy-net = { version = "0.1.0", path = "../../embassy-net", features=["nightly", "std", "log", "medium-ethernet", "tcp", "dhcpv4", "pool-16"] }
+embassy-net = { version = "0.1.0", path = "../../embassy-net", features=[ "std", "log", "medium-ethernet", "tcp", "dhcpv4", "pool-16"] }
 embedded-io = { version = "0.3.0", features = ["async", "std", "futures"] }
 
 async-io = "1.6.0"