From b3ded75ababcc37059501f2445b3dc76f7d0cde4 Mon Sep 17 00:00:00 2001
From: Fisher <44502786+daynobug@users.noreply.github.com>
Date: Fri, 5 Apr 2024 19:06:10 +0800
Subject: [PATCH] bug: return 0 instead of -1 when error occurred on a write
 (#569)

---
 connection_unix.go | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/connection_unix.go b/connection_unix.go
index 18a33d2fe..b82bc9336 100644
--- a/connection_unix.go
+++ b/connection_unix.go
@@ -149,7 +149,7 @@ func (c *conn) write(data []byte) (n int, err error) {
 			logging.Errorf("failed to close connection(fd=%d,peer=%+v) on conn.write: %v",
 				c.fd, c.remoteAddr, err)
 		}
-		return -1, os.NewSyscallError("write", err)
+		return 0, os.NewSyscallError("write", err)
 	}
 	// Failed to send all data back to the peer, buffer the leftover data for the next round.
 	if sent < n {
@@ -183,7 +183,7 @@ func (c *conn) writev(bs [][]byte) (n int, err error) {
 			logging.Errorf("failed to close connection(fd=%d,peer=%+v) on conn.writev: %v",
 				c.fd, c.remoteAddr, err)
 		}
-		return -1, os.NewSyscallError("writev", err)
+		return 0, os.NewSyscallError("writev", err)
 	}
 	// Failed to send all data back to the peer, buffer the leftover data for the next round.
 	if sent < n {