use new smoltcp error code

src/runtime/src/comms.rs

@@ -94,13 +94,13 @@ async fn read_request(stream: &TcpStream, allow_close: bool) -> Result<Option<Re
         Ok(true) => {}
         Ok(false) =>
             return Err(Error::UnexpectedPattern),
-        Err(smoltcp::Error::Illegal) => {
+        Err(smoltcp::Error::Finished) => {
             if allow_close {
                 info!("peer closed connection");
                 return Ok(None);
             } else {
                 error!("peer unexpectedly closed connection");
-                return Err(smoltcp::Error::Illegal)?;
+                return Err(smoltcp::Error::Finished)?;
             }
         },
         Err(e) =>

src/runtime/src/mgmt.rs

@@ -121,7 +121,7 @@ async fn handle_connection(
 
     loop {
         let msg = read_i8(stream).await;
-        if let Err(smoltcp::Error::Illegal) = msg {
+        if let Err(smoltcp::Error::Finished) = msg {
             return Ok(());
         }
         let msg: Request = FromPrimitive::from_i8(msg?).ok_or(Error::UnrecognizedPacket)?;

src/runtime/src/moninj.rs

@@ -184,7 +184,7 @@ pub fn start(timer: GlobalTimer) {
                 info!("received connection");
                 let result = handle_connection(&stream, timer).await;
                 match result {
-                    Err(Error::NetworkError(smoltcp::Error::Illegal)) => info!("peer closed connection"),
+                    Err(Error::NetworkError(smoltcp::Error::Finished)) => info!("peer closed connection"),
                     Err(error) => warn!("connection terminated: {}", error),
                     _ => (),
                 }