From 44b349e32da727f9dcda6aface1f7875a20972a4 Mon Sep 17 00:00:00 2001
From: "Neal H. Walfield" <neal@sequoia-pgp.org>
Date: Tue, 20 Feb 2024 10:38:20 +0100
Subject: ipc: Ensure server's socket is in non-blocking mode.

  - According to the documentation for [`TcpListener::from_std`] the
    passed socket must be in non-blocking mode:

    > The caller is responsible for ensuring that the listener is in
    > non-blocking mode. Otherwise all I/O operations on the listener
    > will block the thread, which will cause unexpected
    > behavior. Non-blocking mode can be set using set_nonblocking.

    [`TcpListener::from_std`]: https://docs.rs/tokio/1.36.0/tokio/net/struct.TcpListener.html

  - Make sure that is the case for any socket we pass to
    `TcpListener::from_std`.
---
 ipc/src/lib.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/ipc/src/lib.rs b/ipc/src/lib.rs
index 89b9a7ca..3f91e211 100644
--- a/ipc/src/lib.rs
+++ b/ipc/src/lib.rs
@@ -356,6 +356,7 @@ impl Server {
         let handler = (self.descriptor.factory)(self.descriptor.clone(), &local)?;
 
         let server = async move {
+            l.set_nonblocking(true)?;
             let socket = tokio::net::TcpListener::from_std(l).unwrap();
 
             loop {
-- 
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