fix(ext/net): make unix and tcp identical on close (#13075)

std/http/server knows how to handle "Listener has been closed"
exceptions but not "operation canceled" errors.

Make "unix" listen sockets throw the same exception as "tcp" listen
sockets when the socket is closed and has a pending accept operation.

There is still a discrepancy when multiple accept requests are posted
but that's probably a less visible issue and something for another day.

Fixes #13033

1 files changed, 5 insertions, 2 deletions

diff --git a/ext/net/ops_unix.rs b/ext/net/ops_unix.rs
index 20d085a5d..58bfa0557 100644
--- a/ext/net/ops_unix.rs
+++ b/ext/net/ops_unix.rs
@@ -91,8 +91,11 @@ pub(crate) async fn accept_unix(
     .try_borrow_mut()
     .ok_or_else(|| custom_error("Busy", "Listener already in use"))?;
   let cancel = RcRef::map(resource, |r| &r.cancel);
-  let (unix_stream, _socket_addr) =
-    listener.accept().try_or_cancel(cancel).await?;
+  let (unix_stream, _socket_addr) = listener
+    .accept()
+    .try_or_cancel(cancel)
+    .await
+    .map_err(crate::ops::accept_err)?;
 
   let local_addr = unix_stream.local_addr()?;
   let remote_addr = unix_stream.peer_addr()?;