From 873d0deeaa5501b2260f0132b1b3dccb6655f269 Mon Sep 17 00:00:00 2001
From: wwqgtxx <wwqgtxx@gmail.com>
Date: Thu, 21 Aug 2025 08:40:03 +0800
Subject: [PATCH] chore: make XorConn replaceable for splice

---
 transport/vless/encryption/xor.go | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/transport/vless/encryption/xor.go b/transport/vless/encryption/xor.go
index 8d97ff93..88bd7698 100644
--- a/transport/vless/encryption/xor.go
+++ b/transport/vless/encryption/xor.go
@@ -198,3 +198,27 @@ func (c *XorConn) Read(b []byte) (int, error) { // 5-bytes, data, 5-bytes...
 	}
 	return n, err
 }
+
+func (c *XorConn) WriterReplaceable() bool {
+	if !c.Divide { // never replaceable
+		return false
+	}
+	if !c.out_after0 {
+		return false
+	}
+	return true
+}
+
+func (c *XorConn) ReaderReplaceable() bool {
+	if !c.Divide { // never replaceable
+		return false
+	}
+	if !c.in_after0 || !c.isHeader {
+		return false
+	}
+	return true
+}
+
+func (c *XorConn) Upstream() any {
+	return c.Conn
+}