From 79a2afae9ff870a8e49e25e360ff77d9b1cdacad Mon Sep 17 00:00:00 2001
From: Motoyuki Kimura <moymoymox@gmail.com>
Date: Tue, 10 Dec 2024 01:52:16 +0900
Subject: [PATCH] util: enable `Either` to use underlying `AsyncWrite`
 implementation (#7025)

---
 tokio-util/src/either.rs | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/tokio-util/src/either.rs b/tokio-util/src/either.rs
index e7fec9546b3..f661bb9e11d 100644
--- a/tokio-util/src/either.rs
+++ b/tokio-util/src/either.rs
@@ -150,6 +150,21 @@ where
     fn poll_shutdown(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<tokio::io::Result<()>> {
         delegate_call!(self.poll_shutdown(cx))
     }
+
+    fn poll_write_vectored(
+        self: Pin<&mut Self>,
+        cx: &mut Context<'_>,
+        bufs: &[std::io::IoSlice<'_>],
+    ) -> Poll<std::result::Result<usize, std::io::Error>> {
+        delegate_call!(self.poll_write_vectored(cx, bufs))
+    }
+
+    fn is_write_vectored(&self) -> bool {
+        match self {
+            Self::Left(l) => l.is_write_vectored(),
+            Self::Right(r) => r.is_write_vectored(),
+        }
+    }
 }
 
 impl<L, R> futures_core::stream::Stream for Either<L, R>